TWI579368B - Liquid crystal composition, and liquid crystal display element using the same - Google Patents

Description

Liquid crystal composition and liquid crystal display element using same

The present invention relates to a nematic liquid crystal composition which exhibits a positive value of dielectric constant anisotropy (??) which is useful as a liquid crystal display material, and a liquid crystal display element using the same.

The liquid crystal display element is used in various measuring apparatuses, such as watches and clocks, computers, instrument panels for automobiles, word processors, electronic notebooks, printers, computers, televisions, watches, advertisement boards, and the like. Typical examples of the liquid crystal display method include a TN (twisted nematic) type, an STN (super twisted nematic) type, a vertical alignment type using a TFT (thin film transistor), and an IPS (in-plane switching) type. The liquid crystal composition used for such liquid crystal display elements is required to be stable to external stimuli such as moisture, air, heat, light, etc., and to display liquid crystal phases in a wide temperature range centered on room temperature as much as possible. Low viscosity and low driving voltage. Further, the liquid crystal composition is composed of several types to several tens of kinds of compounds in order to make dielectric constant anisotropy (Δε) and refractive index anisotropy (Δn) as optimum values for each display element. .

The vertical alignment (VA) type display uses a liquid crystal composition having a negative Δ ε, and a horizontal alignment such as a TN type, an STN type, or an IPS (in-plane switching) type. The type display uses a liquid crystal composition in which Δε is positive. Further, it has been reported that a liquid crystal composition in which Δε is positive when no voltage is applied is vertically aligned, and a transverse electric field is applied to perform display, so that the necessity of a liquid crystal composition having a positive Δ ε is more For improvement. On the other hand, low voltage driving, high-speed response, and a wide operating temperature range are required in all driving methods. That is, it is required that Δε is positive and the absolute value is large, the viscosity (η) is small, and the high nematic phase-isotropic liquid phase transition temperature (Tni). In addition, in order to set Δn×d which is a product of Δn and the cell gap (d) within a predetermined value, it is necessary to set Δn of the liquid crystal composition in a suitable range in accordance with the cell gap. Further, since high-speed responsiveness is considered to be important in the case where a liquid crystal display element is applied to a television or the like, a liquid crystal composition having a small rotational viscosity (γ1) is required.

As a structure of a liquid crystal composition aiming at high-speed responsiveness, for example, a compound represented by the formulas (A-1) and (A-2) in which a liquid crystal compound having a positive Δε is positive, and Δε are neutral. The liquid crystal composition used in combination of (B) of the liquid crystal compound. As a feature of such a liquid crystal composition, a liquid crystal compound having a positive Δ ε has a -CF ₂ O- structure and a liquid crystal compound having a neutral Δ ε has an alkenyl group, and is widely known in the field of liquid crystal compositions (Patent Document 1~) 4).

On the other hand, the use of the liquid crystal display element has been expanded, and it has been observed that the method of use and the method of manufacture vary greatly. In order to cope with such changes, it is required to optimize characteristics other than the basic physical property values known in the past. In other words, a liquid crystal display device using a liquid crystal composition has been widely used in a VA type, an IPS type, etc., and a display element having an extremely large size of 50 Å or more has been used. With the increase in the size of the substrate, the method of injecting the substrate into the liquid crystal composition has also changed, and the conventional vacuum injection method has been replaced by the ODF (One Drop Fill) method. However, the problem that the drip marks when the liquid crystal composition is dropped onto the substrate causes the display level to be lowered is surfaced.

Further, in the step of producing a liquid crystal display element by the ODF method, it is necessary to drip the optimum amount in accordance with the size of the liquid crystal display element. When the deviation of the amount of dripping is greatly different from the optimum value, the balance between the refractive index of the liquid crystal display element designed in advance and the driving electric field is disintegrated, and display defects such as unevenness occurrence and poor contrast may occur. Especially the recent popular wisdom In a small liquid crystal display element which is often used in mobile phones, since the most appropriate liquid crystal dropping amount is small, it is difficult to control the deviation from the optimum value within a certain range. Therefore, in order to improve the manufacturing yield of the liquid crystal display element, it is required that the liquid crystal composition, for example, has a small influence on the pressure change and the rushing force in the dripping device which is generated when the liquid crystal is dropped, and can continue to be dripped after a long period of time.

In this manner, the liquid crystal composition used in driving the liquid crystal display element by the active matrix driven by the TFT element or the like takes into consideration the manufacturing method of the liquid crystal display element, and requires high-speed response performance, high specific resistance value, and high required as the liquid crystal display element. The voltage retention rate, or the pursuit of improving the stability of external stimuli such as light and heat.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open No. 2008-037918

[Patent Document 2] Japanese Patent Laid-Open No. 2008-038018

[Patent Document 3] Japanese Patent Laid-Open No. 2010-275390

[Patent Document 4] Japanese Special Open 2011052120

The object of the present invention is to provide a liquid crystal composition which is a liquid crystal composition having a positive Δ ε and a liquid crystal phase having a wide temperature range, which has low viscosity, good solubility at low temperature, specific resistance and specific resistance. a liquid crystal composition having a high voltage holding ratio and a stable heat and light; and a liquid crystal display element which suppresses the cause of residual image by using the liquid crystal composition A liquid crystal display element which exhibits an excellent display level, such as a drop mark or the like, and a liquid crystal display element using the liquid crystal composition.

The present invention encompasses the following aspects.

(1) A liquid crystal composition comprising a compound represented by the following formula (i) and at least one compound represented by the following formula (ii).

In the above formula (ii), R ^iia represents an alkenyl group having 2 to 5 carbon atoms, and R ^iib represents an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

(2) The liquid crystal composition according to the above (1), which further contains at least one compound represented by the following formula (L).

In the above formula (L), R ^L1 and R ^L2 each independently represent an alkyl group having 1 to 8 carbon atoms, and one of the alkyl groups or at least two non-adjacent -CH ₂ - groups may be independently- CH=CH-, -C≡C-, -O-, -CO-, -COO- or -OCO-substitution, OL means 0, 1, 2 or 3, B ^L1 , B ^L2 and B ^L3 are each independently represented by The group selected from the group consisting of: (a) 1,4-cyclohexylene (one -CH ₂ - present in the group or at least two -CH ₂ - not adjacent) may be substituted with -O -), and (b) 1,4-phenylene (one -CH= or no contiguous at least two -CH= may be substituted for -N=), the above group ( a) and the group (b) may also be independently substituted with a cyano group, a fluorine atom or a chlorine atom, and L ^L1 and L ^L2 each independently represent a single bond, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, -OCF ₂ -, -CF ₂ O-, -CH=NN=CH-, -CH=CH-, -CF=CF- or -C ≡C-, OL is 2 or 3 and L ^{L2 is} plural; they may be the same or different; if OL is 2 or 3 and B ^{L3 is} plural, they may be the same or different. However, the compound represented by the above formula (ii) is excluded.

(3) The liquid crystal composition according to the above (1) or (2), which further contains at least one compound represented by the following formula (M).

In the above formula (M), R ^M1 represents an alkyl group having 1 to 8 carbon atoms, and one of the alkyl groups or at least two non-adjacent -CH ₂ - groups may be independently -CH=CH- , -C≡C-, -O-, -CO-, -COO- or -OCO-substitution, PM represents 0, 1, 2, 3 or 4, and C ^M1 and C ^M2 are each independently represented by the group below Selected base: (d) 1,4-cyclohexylene (1 -CH ₂ - present in the group or at least 2 -CH ₂ - not adjacent) may also be substituted with -O- or -S- And, (e) 1,4-phenylene (one -CH= or no adjacent at least two -CH= may be substituted by -N=), the above-mentioned group (d) And the group (e) may also be independently substituted with a cyano group, a fluorine atom or a chlorine atom, and K ^M1 and K ^M2 each independently represent a single bond, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -OCF ₂ -, -CF ₂ O-, -COO-, -OCO- or -C≡C-, PM is 2, 3 or 4 and K ^{M1 is} present in plurals, It may be the same or different; when the PM is 2, 3 or 4 and the C ^M2 plural is present, they may be the same or different; X ^M1 and X ^M3 each independently represent a hydrogen atom, a chlorine atom or a fluorine atom. X ^M2 represents a hydrogen atom, a fluorine atom, a chlorine atom, a compound represented by the above formula (i), a trifluoromethyl group, a fluoromethyloxy group, a difluoromethyloxy group, a trifluoromethoxy group or a 2,2,2-trifluoroethyl group except.

(4) The liquid crystal composition according to the above (3), wherein at least one compound represented by the above formula (M) is at least one compound represented by the following formula (XI).

In the above formula (XI), X ¹¹¹ to X ¹¹⁷ each independently represent a fluorine atom or a hydrogen atom, and at least one of X ¹¹¹ to X ¹¹⁷ represents a fluorine atom, and R ¹¹⁰ represents an alkyl group having 1 to 5 carbon atoms and carbon. An alkenyl group having 2 to 5 atoms or an alkoxy group having 1 to 4 carbon atoms, and Y ¹¹ represents a fluorine atom or -OCF ₃ .

(5) The liquid crystal composition according to the above (4), wherein at least one compound represented by the above formula (XI) contains at least 4% by mass of the following formula (45.4) based on the total mass of the liquid crystal composition. ) the compound represented.

(6) The liquid crystal composition according to any one of the above (3), wherein at least one compound represented by the above formula (M) is represented by the following formula (IX-1) At least one compound.

In the above formula (IX-1), R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and X ⁹² represents a hydrogen atom or A fluorine atom, Y ⁹ represents a fluorine atom or -OCF ₃ .

(7) The liquid crystal composition according to the above (6), wherein at least one compound represented by the above formula (IX-1) contains at least 13% by mass of the following formula with respect to the total mass of the liquid crystal composition. (28.5) The compound represented.

The liquid crystal composition according to any one of the above-mentioned items (3), wherein at least one compound represented by the above formula (M) is represented by the following formula (IX-2) At least one compound.

In the above formula (IX-2), R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and each of X ⁹¹ and X ⁹² Independently represents a hydrogen atom or a fluorine atom, and Y ⁹ represents a fluorine atom, a chlorine atom, or -OCF ₃ .

(9) The liquid crystal composition according to the above (8), wherein at least one compound represented by the above formula (IX-2) is at least one compound represented by the following formula (IX-2-2) .

In the above formula (IX-2-2), R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

(10) The liquid crystal composition according to the above (9), wherein at least one compound represented by the above formula (IX-2-2) contains at least 11% by mass based on the total mass of the liquid crystal composition. Represented by the formula (31.2) Compound.

(11) The liquid crystal composition according to the above (9) or (10), wherein at least one compound represented by the above formula (IX-2-2) contains 0.5 mass based on the total mass of the liquid crystal composition. % or more of the compound represented by the following formula (31.4) of less than 3% by mass.

The liquid crystal composition of any one of the above-mentioned (8) to (11), wherein at least one compound represented by the above formula (IX-2) contains the following formula (IX-2-5) ) at least one compound represented.

In the above formula (IX-2-5), R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

(13) The liquid crystal composition according to the above (12), wherein at least one compound represented by the above formula (IX-2-5) contains 0.5% by mass or more and less than 10% based on the total mass of the liquid crystal composition. % by mass of the compound represented by the formula (34.5).

(14) The liquid crystal composition according to the above (12) or (13), wherein at least one compound represented by the above formula (IX-2-5) contains at least 8 with respect to the total mass of the liquid crystal composition. % by mass of the compound represented by the formula (34.1).

The liquid crystal composition according to any one of the above-mentioned items (2), wherein at least one compound represented by the above formula (L) contains at least one represented by the formula (V-1). Kind of compound.

In the above formula (V-1), R ⁵¹ and R ⁵² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and X. ⁵¹ and X ⁵² each independently represent a fluorine atom or a hydrogen atom.

(16) The liquid crystal composition according to the above (15), wherein any one of the above X ⁵¹ and X ⁵² is a hydrogen atom, and the other is a fluorine atom.

(17) The liquid crystal composition according to the above (16), wherein at least one compound represented by the above formula (V-1) is a compound represented by the formula (21.1) and a compound represented by the formula (22.1). At least one of them.

The liquid crystal composition according to any one of the above (3), wherein at least one compound represented by the above formula (M) is at least 1 represented by the formula (X-2). Kind of compound.

In the above formula (X-2), X ¹⁰² and X ¹⁰³ each independently represent a fluorine atom or a hydrogen atom, Y ¹⁰ represents a fluorine atom, a chlorine atom, or -OCF ₃ , and R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms. An alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

(19) The liquid crystal composition according to the above (18), wherein at least one compound represented by the above formula (X-2) contains the following formula (X-2-1) or (X-2-2) ) at least one compound represented.

In the above formulae (X-2-1) and (X-2-2), R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or a carbon number of 1 to 4; Alkoxy.

(20) The liquid crystal composition according to the above (19), which comprises a compound represented by the following formula (39.2) and/or a compound represented by the following formula (40.2).

The liquid crystal composition of any one of the above (3), wherein at least one compound represented by the above formula (M) contains at least one compound represented by the formula (X-1). Compound.

In the above formula (X-1), X ¹⁰¹ to X ¹⁰³ each independently represent a fluorine atom or a hydrogen atom, and R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or a carbon number. 1 to 4 alkoxy groups.

(22) The liquid crystal composition according to the above (21), wherein at least one compound represented by the above formula (X-1) contains the following formula (X-1-2) or (X-1-3) At least one of the compounds represented.

In the above formula (X-1-2) and (X-1-3), R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or a carbon number of 1 to 4; Alkoxy.

(23) The liquid crystal composition according to the above (22), which comprises a compound represented by the following formula (37.2) and/or a compound represented by the following formula (38.2).

The liquid crystal composition of any one of the above-mentioned (2), wherein at least one compound represented by the above formula (L) contains at least one compound represented by the formula (IV). .

In the above formula, R ⁴¹ and R ⁴² each independently represent an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and each of X ⁴¹ and X ⁴² independently represents a hydrogen atom or a fluorine atom.

(25) The liquid crystal composition according to the above (24), wherein any one of X ⁴¹ and X ⁴² represents a hydrogen atom, and the other represents a fluorine atom.

(26) The liquid crystal composition according to the above (25), wherein at least one compound represented by the above formula (IV) is a compound represented by the following formula (19.1), and/or the following formula (19.2) The compound represented.

The liquid crystal composition of any one of the above (3) to (26), wherein at least one compound represented by the above formula (M) is represented by the following formula (XIV-2) At least one compound.

In the above formula (XIV-2), R ¹⁴⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and each of X ¹⁴¹ to X ¹⁴⁴ Independently represents a fluorine atom or a hydrogen atom, and Y ¹⁴ represents a fluorine atom, a chlorine atom or -OCF ₃ .

(28) The liquid crystal composition according to the above (27), wherein at least one compound represented by the above formula (XIV-2) is at least one compound represented by the following formula (XIV-2-2) .

In the above formula (XIV-2-2), R ¹⁴⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

(29) The liquid crystal composition according to the above (28), wherein at least one compound represented by the above formula (XIV-2-2) is contained in an amount of 0.5% by mass or more and less than 4% based on the total mass of the liquid crystal composition. A compound represented by the following formula (54.1) by mass%.

The liquid crystal composition according to any one of the above (27) to (29), wherein at least one compound represented by the above formula (XIV-2) contains the following formula (XIV-2-4) ) at least one compound represented.

In the above formula (XIV-2-4), R ¹⁴⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

(31) The liquid crystal composition according to the above (30), wherein the at least one compound represented by the above formula (XIV-2-4) contains at least 5% by mass of the following with respect to the total mass of the liquid crystal composition. A compound represented by the formula (56.1).

The liquid crystal composition of any one of the above (2) to (31), wherein at least one compound represented by the above formula (L) is represented by the following formula (I-5) At least one compound.

In the above formula (I-5), R ¹¹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and R ¹² represents a carbon number. An alkyl group of 1 to 5, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

(33) The liquid crystal composition according to the above (32), wherein at least one compound represented by the above formula (I-5) is a compound represented by the following formula (6.6).

The liquid crystal composition according to any one of the above-mentioned items (2), wherein at least one compound represented by the above formula (L) is contained At least one compound represented by the above formula (I-7).

In the above formula (I-7), R ¹¹ and R ¹² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and X. ¹² denotes a fluorine atom or a chlorine atom.

(35) The liquid crystal composition according to the above (34), wherein at least one compound represented by the above formula (I-7) is a compound represented by the following formula (8.1).

The liquid crystal composition according to any one of the above items (1) to (35), which further comprises a compound represented by the following formula (2.5).

The liquid crystal composition according to any one of the above items (1) to (36) further comprising a compound represented by the following formula (Q-a).

In the above formula (Qa), R ^Q1 represents a linear alkyl group or a branched alkyl group having 1 to 10 carbon atoms.

(38) The liquid crystal composition according to the above (37), wherein the compound represented by the above formula (Q-a) is a compound represented by the following formula (Q-a-1).

The liquid crystal composition according to any one of the above (1) to (38), further comprising a compound represented by the following formula (Q-c).

In the above formula (Qc), R ^Q3 represents a linear alkyl group having 1 to 8 carbon atoms, a branched alkyl group, a linear alkoxy group or a branched alkoxy group.

(40) The liquid crystal composition according to the above (39), wherein the compound represented by the above formula (Q-c) is a compound represented by the following formula (Q-c-1).

(41) A liquid crystal composition according to any one of the above items (1) to (40) Further, the product further contains at least one compound represented by the following formula (XX).

In the above formula (XX), X ²⁰¹ and X ²⁰² each independently represent a hydrogen atom or a methyl group, and Sp ²⁰¹ and Sp ²⁰² each independently represent a single bond, an alkylene group having 1 to 8 carbon atoms or -O-(CH _{2 ).} ) _s - (wherein, s represents an integer of 2 to 7, the oxygen atom is bonded to the aromatic ring), and Z ²⁰¹ represents -OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, -CF ₂ O-, -OCF ₂ -, -CH ₂ CH ₂ -, -CF ₂ CF ₂ -, -CH=CH-COO-, -CH=CH-OCO-, -COO-CH=CH-, -OCO- CH=CH-, -COO-CH ₂ CH ₂ -, -OCO-CH ₂ CH ₂ -, -CH ₂ CH ₂ -COO-, -CH ₂ CH ₂ -OCO-, -COO-CH ₂ -, -OCO -CH ₂ -, -CH ₂ -COO-, -CH ₂ -OCO-, -CY ¹ =CY ² - (wherein, Y ¹ and Y ² each independently represent a fluorine atom or a hydrogen atom), -C≡C- Or a single bond, M ²⁰¹ represents a 1,4-phenylene group, a trans-1,4-cyclohexylene group or a single bond, and any hydrogen atom of all 1,4-phenylene groups in the formula may be substituted by a fluorine atom. .

(42) The liquid crystal composition according to the above (41), wherein at least one compound represented by the above formula (XX) is a compound represented by the following formula (XX-2).

The liquid crystal composition of any one of the above (2) to (42), wherein at least one compound represented by the above formula (L) is a compound represented by the following formula (12.3).

The liquid crystal composition according to any one of the above items (1) to (43) further comprising a compound represented by the following formula (62.1).

The liquid crystal composition according to any one of the above items (1) to (44) further comprising a compound represented by the following formula (62.3).

(46) A liquid crystal display element obtained by using the liquid crystal composition according to any one of the above items (1) to (45).

(47) A liquid crystal display element according to the above (46), wherein the display mode is the IPS mode.

(48) The liquid crystal display element of (46) above, wherein the display mode is OCB mode.

(49) A liquid crystal display element according to the above (46), wherein the display mode is the ECB mode.

(50) A liquid crystal display element according to the above (46), wherein the display mode is the VA mode.

(51) A liquid crystal display element according to the above (46), wherein the display mode is the VA-IPS mode.

(52) The liquid crystal display element of (46) above, wherein the display mode is the FFS mode.

(53) A liquid crystal display device characterized by using the liquid crystal display element according to any one of the above (46) to (52).

The composition having the positive dielectric anisotropy of the present invention can maintain low viscosity, high specific resistance, and high voltage holding ratio, and at the same time, the solubility at low temperature can be remarkably improved compared with the prior art, and the ODF method is utilized. The dripping of the liquid crystal display element in the manufacturing step can be continued for a long time. Therefore, the composition of the present invention can be produced with better yield: a liquid crystal display element which is suppressed in display failure due to a manufacturing step and exhibits an excellent display level, has high practicability (applicability) in a liquid crystal product, and is used A liquid crystal display element such as an IPS (in-plane switching) type or an FFS (Fringe Electric Field Switching) type can achieve high-speed response.

100‧‧‧1st substrate

102‧‧‧TFT layer

103‧‧‧pixel electrode

104‧‧‧ Passivation layer

105‧‧‧1st alignment film

200‧‧‧2nd substrate

201‧‧‧flat film

202‧‧‧Black matrix

203‧‧‧Color filters

204‧‧‧Transparent electrode

205‧‧‧2nd alignment film

301‧‧‧ sealing material

302‧‧‧protrusion (columnar spacer)

303‧‧‧Liquid layer

304‧‧‧protrusion (columnar spacer)

401‧‧‧ mask pattern

402‧‧‧ resin layer

Figure 1 is a cross-sectional view showing a liquid crystal display element of the present invention. A substrate having 100 to 105 is referred to as a "backplane", and a substrate having 200 to 205 is called a substrate. "front panel."

2 is a view showing an exposure processing procedure using a pattern for forming a columnar spacer formed on a black matrix as a mask pattern.

[Formation of the Invention]

The liquid crystal composition of the present invention has a liquid crystal composition having positive dielectric anisotropy, and contains a compound represented by the following formula (i) and a compound represented by the following formula (ii). Hereinafter, the liquid crystal composition will be described. However, "%" means "% by mass" unless otherwise specified. Moreover, the preferable content of each compound is a preferable content when the compound is blended in the liquid crystal composition (except when the lower limit value is 0% by mass).

In the formula (ii), R ^iia represents an alkenyl group having 2 to 5 carbon atoms, and R ^iib represents an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The content of the compound represented by the formula (i) in the liquid crystal composition is not particularly limited, and is preferably 1% by mass or more, more preferably 2% by mass or more, and 3% by mass based on the total mass of the liquid crystal composition. % or more is preferable, 4% by mass or more is preferable, 5 mass% or more is preferable, 6 mass% or more is preferable, 7 mass% or more is preferable, 8 mass% or more is preferable, and 9 mass% is good. The amount is preferably at least 11% by mass, preferably 12% by mass or more, more preferably 13% by mass or more, more preferably 14% by mass or more, more preferably 15% by mass or more, and most preferably 16% by mass or more. On the other hand, in consideration of low-temperature solubility, nematic phase-isotropic liquid phase transfer temperature, electrical reliability, etc., the content of the compound represented by the formula (i) in the liquid crystal composition is relative to the liquid crystal described above. The total mass of the composition is preferably 30% by mass or less, preferably 25% by mass or less, more preferably 21% by mass or less, more preferably 16% by mass or less, more preferably 15% by mass or less, and most preferably 14% by mass or less, 13 The mass% or less is preferably 12% by mass or less, preferably 11% by mass or less, more preferably 10% by mass or less, more preferably 9% by mass or less, more preferably 8 mass% or less, and 7% by mass or less, and 6 mass%. % is preferably below, and 4% by mass or less is preferred. Among these, the content of the compound represented by the formula (i) in the liquid crystal composition is preferably from 1 to 30% by mass, preferably from 1 to 25% by mass based on the total mass of the liquid crystal composition of the present invention. 1 to 21% by mass is preferred, 1 to 14% by mass is preferred, 1 to 12% by mass is preferred, 1 to 10% by mass is preferred, 1 to 9% by mass is preferred, and 1 to 8% by mass is preferred, 1 ~7 mass% is better, 2~21 mass% is better, 3~21 mass% is better, 4~21 mass% is better, 5~21 mass% is better, 6~21 mass% is better, 7~21 The mass % is better, 12 to 21% by mass is preferred, 16 to 21% by mass is preferred, 4 to 10% by mass is preferred, 5 to 10% by mass is preferred, and 5 to 8% by mass is preferred, and 6 to 9% by mass is preferred. Preferably, 6 to 8 mass% is preferred, 3 to 7 mass% is preferred, 7 to 12 mass% is preferred, 12 to 14 mass% is preferred, and 16 to 21 mass% is preferred.

The content of the compound represented by the formula (ii) in the liquid crystal composition is 1 in terms of the response speed, electrical, and optical reliability with respect to the total mass of the liquid crystal composition of the present invention. The mass% or more is preferably 3% by mass or more, preferably 5% by mass or more, preferably 6% by mass or more, more preferably 7% by mass or more, more preferably 8% by mass or more, and most preferably 9% by mass or more. The mass% or more is preferably 11 mass% or more, preferably 12 mass% or more, 14 mass% or more, 15 mass% or more, 16 mass% or more, 18 mass% or more, and 20 mass%. More than % is preferable, 23% by mass or more is preferable, 26% by mass or more is preferable, and 27% by mass or more is preferable. On the other hand, the content of the compound represented by the formula (ii) in the liquid crystal composition is preferably 40% by mass or less, and preferably 35% by mass or less, based on the total mass of the liquid crystal composition of the present invention. 31% by mass or less is preferable, 27% by mass or less is preferable, 26% by mass or less is preferable, 23% by mass or less is preferable, 20% by mass or less is preferable, and 19% by mass or less is preferable, and 18% by mass or less is preferable. Preferably, it is preferably 16% by mass or less, preferably 15% by mass or less, more preferably 14% by mass or less, more preferably 13% by mass or less, more preferably 12% by mass or less, more preferably 11% by mass or less, and most preferably 10% by mass or less. 8% by mass or less is preferred, and 7% by mass or less is preferred, and 6% by mass or less is preferred. Among these, the content of the compound represented by the formula (ii) in the liquid crystal composition is preferably from 1 to 40% by mass, and from 1 to 35% by mass based on the total mass of the liquid crystal composition of the present invention. Preferably, 1~31% by mass is better, 1~20% by mass is better, 1~19% by mass is better, 1~16% by mass is better, 1~15% by mass is better, and 1~13% by mass is better. 1 to 12% by mass is preferred, 1 to 10% by mass is preferred, 1 to 7% by mass is preferred, 3 to 31% by mass is preferred, 5 to 31% by mass is preferred, and 6 to 31% by mass is preferred, 7 ~31% by mass is preferred, 8 to 31% by mass is preferred, 9 to 31% by mass is preferred, 11 to 31% by mass is preferred, 12 to 31% by mass is preferred, and 20 to 31% by mass is preferred, 3 to 7 is preferred The mass % is better, 7-13% by mass is better, and 8-13% by mass is better. 5 to 19% by mass is preferred, 6 to 12% by mass is preferred, 6 to 10% by mass is preferred, 9 to 16% by mass is preferred, 12 to 15% by mass is preferred, and 12 to 13% by mass is preferred, 11 ~20% by mass is preferred.

In the liquid crystal composition, the content of the compound represented by the formula (i) and the content of the compound represented by the formula (ii) are low-temperature solubility, nematic phase-isotropic liquid phase transition temperature, and response speed. The content of the compound represented by the formula (i) is 1% by mass or more and 30% by mass or less based on the total mass of the liquid crystal composition of the present invention, and the general formula (ii) The content of the compound to be represented is preferably 1% by mass or more and 40% by mass or less, and the content of the compound represented by the formula (i) is 1% by mass or more and 25% by mass or less, and the content of the compound represented by the formula (ii) is 1% by mass or more and 35% by mass or less is preferable, and the content of the compound represented by the formula (i) is 2% by mass or more and 21% by mass or less, and the content of the compound represented by the formula (ii) is 3% by mass or more and 31% by mass. The following is better.

The total content of the compound represented by the formula (i) and the compound represented by the formula (ii) is preferably 2% by mass or more, more preferably 5% by mass or more, and 8 % by mass based on the total mass of the liquid crystal composition. The above is preferable, 9% by mass or more is preferable, 12% by mass or more is preferable, 13% by mass or more is preferable, 14% by mass or more is preferable, 16% by mass or more is preferable, 18% by mass or more is preferable, and 19% by mass or more is preferable. Preferably, 20% by mass or more is preferable, 21% by mass or more is preferable, 22% by mass or more is preferable, 23% by mass or more is preferable, 24% by mass or more is preferable, 32% by mass or more is preferable, and 33% by mass or more is preferable. Preferably, 34% by mass or more is preferable, 35% by mass or more is preferable, 36% by mass or more is preferable, 41% by mass or more is preferable, and 42% by mass or more is preferable. On the other hand, the total of the compound represented by the formula (i) and the compound represented by the formula (ii) The content is preferably 50% by mass or less, more preferably 45% by mass or less, more preferably 43% by mass or less, more preferably 42% by mass or less, and most preferably 41% by mass or less, based on the total mass of the liquid crystal composition. % or less is preferably 36 mass% or less, preferably 35 mass% or less, 34 mass% or less, 27 mass% or less, 26 mass% or less, 24 mass% or less, and 23 mass%. The following is preferable, 22% by mass or less is preferable, 21% by mass or less is preferable, 20% by mass or less is preferable, 18% by mass or less is preferable, 17% by mass or less is preferable, and 15% by mass or less is preferable, and 14% by mass or less is preferable. Preferably, 12% by mass or less is preferred, and 11% by mass or less is preferred. In the above, the total content of the compound represented by the formula (i) and the compound represented by the formula (ii) is preferably 2 to 50% by mass, and 8 to 50% by mass based on the total mass of the liquid crystal composition. % is better, 12~50% by mass is better, 13~50% by mass is better, 14~50% by mass is better, 16~50% by mass is better, 19~50% by mass is better, and 21~50% by mass is good, 21~50% by mass is Good, 32~50% by mass is better, 33~50% by mass is better, 5~45% by mass is better, 5~43% by mass is better, 5~37% by mass is better, and 5~27% by mass is better, 5~26% by mass is better, 5~22% by mass is better, 5~20% by mass is better, 5~17% by mass is better, 5~15% by mass is better, 5~14% by mass is better, 5~ 11% by mass is preferred, 8 to 43% by mass is preferred, 8 to 22% by mass is preferred, 8 to 17% by mass is preferred, 8 to 15% by mass is preferred, 8 to 14% by mass is preferred, and 8 to 11% by mass is preferred. % is better, 12 to 22% by mass is preferred, 13 to 20% by mass is preferred, 12 to 17% by mass is preferred, 14 to 17% by mass is preferred, 16 to 22% by mass is preferred, and 19 to 22% by mass is preferred. Preferably, 9 to 15% by mass is preferred, 13 to 27% by mass is preferred, 21 to 26% by mass is preferred, 32 to 37% by mass is preferred, and 33 to 43% by mass is preferred.

a compound represented by the above formula (ii), which is in the present invention At least one type of liquid crystal composition is included. When at least two kinds of the compounds represented by the above formula (ii) are blended, they can be appropriately combined in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

In addition, the compound represented by the above formula (ii) is preferably at least one compound selected from the group consisting of compounds represented by the formula (ii.1) to the formula (ii.3).

The compound represented by the formula (ii.1) may be contained in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence, and may also contain a compound represented by the formula (ii.2). Both the compound represented by the formula (ii.1) and the compound represented by the formula (ii.2) may be contained, and all of the compounds represented by the formula (ii.1) to the formula (ii.3) may be contained.

The content of the compound represented by the above formula (ii.1) is preferably 1 to 30% by mass, more preferably 2 to 25% by mass, and most preferably 2 to 20% by mass based on the total mass of the liquid crystal composition of the present invention. Among these, it is preferably, for example, 3 to 20% by mass, 5 to 20% by mass, 6 to 20% by mass, 7 to 20% by mass, 8 to 20% by mass, 9 to 20% by mass, and 10 to 20% by mass. 11 to 20% by mass, 12 to 20% by mass, 13 to 20% by mass, 14 to 20% by mass, 16 to 20% by mass, 3 to 17% by mass, 3 to 16% by mass, 3 to 15% by mass, and 3 ~14% by mass, 3~13 quality Amount %, 3 to 11% by mass, 3 to 10% by mass, 3 to 9% by mass, 3 to 8 mass%, 3 to 7 mass%, 3 to 6 mass%, 3 to 5 mass%, and 5 to 13 mass% 5-10% by mass, 5-9 mass%, 6-11 mass%, 6-10 mass%, 7-15 mass%, 7-13 mass%, 8-15 mass%, 12-15 mass%, 10 ~16% by mass, 13 to 16% by mass, and 13 to 17% by mass.

Further, the content of the compound represented by the above formula (ii.2) is preferably from 1 to 30% by mass, preferably from 1 to 25% by mass, and from 1 to 20% by mass based on the total mass of the liquid crystal composition of the present invention. good. Among them, for example, 1 to 17% by mass is preferred, 1 to 16% by mass is preferred, 1 to 15% by mass is preferred, 1 to 14% by mass is preferred, and 1 to 13% by mass is preferred, and 1 to 12% by mass is preferred. The mass % is better, 1 to 11% by mass is preferred, 1 to 10% by mass is preferred, 1 to 9% by mass is preferred, 1 to 7 mass% is preferred, 1 to 3 mass% is preferred, and 2 to 17% by mass is preferred. Preferably, 3 to 17% by mass is preferred, 4 to 17% by mass is preferred, 5 to 17% by mass is preferred, 6 to 17% by mass is preferred, 7 to 17% by mass is preferred, and 8 to 17% by mass is preferred. 9 to 17% by mass is preferred, 10 to 17% by mass is preferred, 11 to 17% by mass is preferred, 13 to 17% by mass is preferred, 2 to 13% by mass is preferred, and 9 to 13% by mass is preferred, and 3 is preferred. ~10% by mass is better, 7~10% by mass is better, 9~10% by mass is better, 4~15% by mass is better, 8~15% by mass is better, 10~15% by mass is better, 5~11 is better, 5~11 The mass % is preferably, 5 to 9 mass% is preferred, 6 to 12 mass% is preferred, 8 to 16 mass% is preferred, 11 to 14 mass% is preferred, and 13 to 14 mass% is preferred.

The liquid crystal composition of the present invention contains only one of the compounds represented by the above formula (ii.1) and the above formula (ii.2), and the compound represented by the above formula (i) and the above formula ( The total content of the compound represented by the formula (ii.2) or the above formula (ii.2) is preferably 5 to 40% by mass, more preferably 10 to 30% by mass, based on the total mass of the liquid crystal composition of the present invention. 10~25 The mass % is better, and 15 to 25 mass% is particularly good.

In the case where both the compound represented by the above formula (ii.1) and the compound represented by the above formula (ii.2) are contained, the total mass of the compounds is 1 mass based on the total mass of the liquid crystal composition of the present invention. % or more and 45% by mass or less is preferable, and 1% by mass or more and 40% by mass or less is preferable, and 1% by mass or more and 35% by mass or less is preferable, and 1% by mass or more and 31% by mass or less is preferable, and 1% by mass or more and 27% by mass or less is preferable. Preferably, it is preferably 1% by mass or more and 26% by mass or less, more preferably 1% by mass or more and 23% by mass or less, more preferably 1% by mass or more and 20% by mass or less, more preferably 1% by mass or more and 19% by mass or less, and 1% by mass or less. The amount is preferably 18% by mass or less, preferably 1% by mass or more and 16% by mass or less, more preferably 1% by mass or more and 15% by mass or less, more preferably 1% by mass or more and 14% by mass or less, and 1% by mass or more and 13% by mass or less. Preferably, it is preferably 1% by mass or more and 12% by mass or less, more preferably 1% by mass or more and 11% by mass or less, more preferably 1% by mass or more and 10% by mass or less, more preferably 1% by mass or more and 8% by mass or less, and 1% by mass or more. 7 mass% or less is preferable, 1 mass% or more and 6 mass% or less are preferable, and 3 mass% or more and 31 mass% or less are preferable, and 5 mass% or more and 31 mass% are preferable. % or less is preferably 6% by mass or more and 31% by mass or less, preferably 7 mass% or more and 31 mass% or less, preferably 8 mass% or more and 31 mass% or less, and preferably 9 mass% or more and 31 mass% or less. The mass% or more is preferably 31% by mass or less, more preferably 11% by mass or more and 31% by mass or less, more preferably 12% by mass or more and 31% by mass or less, and most preferably 14% by mass or more and 31% by mass or less, and preferably 15% by mass or more and 31% by mass or less. The following is preferable, and 16% by mass or more and 31% by mass or less is preferable, 18% by mass or more and 31% by mass or less is preferable, 20% by mass or more and 31% by mass or less is preferable, and 23% by mass or more and 31% by mass or less are preferable, and 26 mass% is preferable. % or more is preferably 31% by mass or less, and 27% by mass is The upper portion is preferably 31% by mass or less, more preferably 3% by mass or more and 7% by mass or less, more preferably 5% by mass or more and 19% by mass or less, and most preferably 9% by mass or more and 16% by mass or less, and 12% by mass or more and 15% by mass or less. Preferably, it is preferably 12% by mass or more and 13% by mass or less, more preferably 6% by mass or more and 12% by mass or less, more preferably 6% by mass or more and 10% by mass or less, and most preferably 7 mass% or more and 13 mass% or less, and preferably 8 mass% or more. 13% by mass or less is preferable, and 11% by mass or more and 20% by mass or less is preferable, and 20% by mass or more and 31% by mass or less is preferable.

The liquid crystal composition of the present invention may further contain at least one compound represented by the formula (L).

In the above formula (L), R ^L1 and R ^L2 each independently represent an alkyl group having 1 to 8 carbon atoms, and one of the alkyl groups or at least two non-adjacent -CH ₂ - groups may be independently -CH=CH-, -C≡C-, -O-, -CO-, -COO- or -OCO-substitution.

OL means 0, 1, 2 or 3.

B ^L1 , B ^L2 and B ^L3 each independently represent a group selected by the following group.

(a) 1,4-cyclohexylene (one -CH ₂ - or at least two -CH ₂ - not adjacent to the group may be substituted with -O-), and (b) 1, 4-phenylene (the one present in the group -CH= or at least two adjacent to -CH= may also be substituted with -N=), at least the above-mentioned group (a), group (b) One hydrogen atom may be independently substituted with a cyano group, a fluorine atom or a chlorine atom.

L ^L1 and L ^L2 each independently represent a single bond, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, -OCF ₂ -, -CF ₂ O-, -CH=NN=CH-, -CH=CH-, -CF=CF- or -C≡C-.

Where OL is 2 or 3 and L ^L2 is a plural, they may be the same or different.

Where OL is 2 or 3 and B ^L3 is a plural, they may be the same or different.

However, the compound represented by the above formula (ii) is excluded.

The kind of the compound which can be combined is not particularly limited, and can be appropriately combined and used in accordance with desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence (refractive index anisotropy). The type of the compound to be used is, for example, one embodiment of the present invention. Or another embodiment of the present invention is two types. Further, in another embodiment of the present invention, there are three types. Furthermore, in another embodiment of the present invention, there are four types. Furthermore, in another embodiment of the present invention, there are five types. Furthermore, in another embodiment of the present invention, there are six types. Furthermore, in another embodiment of the present invention, there are seven types. Furthermore, in another embodiment of the present invention, there are eight types. Furthermore, in another embodiment of the present invention, there are nine types. Furthermore, in another embodiment of this invention, they are 10 or more types.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (L) must be in accordance with low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, drip marks, afterimage, dielectric The performance required for coefficient anisotropy and the like is appropriately adjusted.

The content of the compound represented by the above formula (L) is, for example, 10 to 90% by mass in one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Further, in another embodiment of the present invention, The content is 15 to 85% by mass. Furthermore, in another embodiment of the present invention, the content is 20 to 80% by mass. Furthermore, in another embodiment of the present invention, the content is 22 to 80% by mass. Furthermore, in another embodiment of the present invention, the content is 30 to 80% by mass. Furthermore, in another embodiment of the present invention, the content is 31 to 80% by mass. Furthermore, in another embodiment of the present invention, the content is from 33 to 80% by mass. Furthermore, in another embodiment of the present invention, the content is 35 to 80% by mass. Furthermore, in another embodiment of the present invention, the content is 36 to 80% by mass. Furthermore, in another embodiment of the present invention, the content is 37 to 80% by mass. Furthermore, in another embodiment of the present invention, the content is from 39 to 80% by mass. Furthermore, in another embodiment of the present invention, the content is 40 to 80% by mass. Furthermore, in another embodiment of the present invention, the content is from 41 to 80% by mass. Furthermore, in another embodiment of the present invention, the content is 42 to 80% by mass. Furthermore, in another embodiment of the present invention, the content is 43 to 80% by mass. Furthermore, in another embodiment of the present invention, the content is 45 to 80% by mass. Furthermore, in another embodiment of the present invention, the content is 46 to 80% by mass. Furthermore, in another embodiment of the present invention, the content is 47 to 80% by mass. Furthermore, in another embodiment of the present invention, the content is 49 to 80% by mass. Furthermore, in another embodiment of the present invention, the content is 50 to 80% by mass. Furthermore, in another embodiment of the present invention, the content is 51 to 80% by mass. Furthermore, in another embodiment of the present invention, the content is 58 to 80% by mass. Furthermore, in another embodiment of the present invention, the content is from 59 to 80% by mass. Furthermore, in another embodiment of the present invention, the content is 70 to 57% by mass. Furthermore, in another embodiment of the present invention, the content is 20% to 76% by mass. Furthermore, in another embodiment of the present invention The above content is 20 to 70% by mass. Furthermore, in another embodiment of the present invention, the content is 20 to 59% by mass. Furthermore, in another embodiment of the present invention, the content is 20 to 58% by mass. Furthermore, in another embodiment of the present invention, the content is 20 to 56% by mass. Furthermore, in another embodiment of the present invention, the content is 20 to 55% by mass. Furthermore, in another embodiment of the present invention, the content is 20 to 53% by mass. Furthermore, in another embodiment of the present invention, the content is 20 to 52% by mass. Furthermore, in another embodiment of the present invention, the content is 20 to 51% by mass. Furthermore, in another embodiment of the present invention, the content is 20 to 49% by mass. Furthermore, in another embodiment of the present invention, the content is 20 to 48% by mass. Furthermore, in another embodiment of the present invention, the content is 20% to 47% by mass. Furthermore, in another embodiment of the present invention, the content is 20 to 45% by mass. Furthermore, in another embodiment of the present invention, the content is 20% to 43% by mass. Furthermore, in another embodiment of the present invention, the content is 20 to 41% by mass. Furthermore, in another embodiment of the present invention, the content is 20 to 40% by mass. Furthermore, in another embodiment of the present invention, the content is 20% to 37% by mass. Furthermore, in another embodiment of the present invention, the content is 20 to 35% by mass. Furthermore, in another embodiment of the present invention, the content is 20% to 33% by mass. Furthermore, in another embodiment of the present invention, the content is 20 to 31% by mass. Furthermore, in another embodiment of the present invention, the content is 20 to 30% by mass. Furthermore, in another embodiment of the present invention, the content is 35 to 37% by mass. Furthermore, in another embodiment of the present invention, the content is 37 to 48% by mass. Furthermore, in another embodiment of the present invention, the content is 36 to 45% by mass. Furthermore, in another embodiment of the present invention, the content is from 39 to 43% by mass. Furthermore, another embodiment of the present invention The aforementioned content is 40 to 76% by mass. Furthermore, in another embodiment of the present invention, the content is 42 to 56% by mass. Furthermore, in another embodiment of the present invention, the content is 45 to 56% by mass. Furthermore, in another embodiment of the present invention, the content is from 47 to 55% by mass. Furthermore, in another embodiment of the present invention, the content is 49 to 55% by mass. Furthermore, in another embodiment of the present invention, the content is 50% to 53% by mass. Furthermore, in another embodiment of the present invention, the content is 43 to 49% by mass. Furthermore, in another embodiment of the present invention, the content is 46 to 52% by mass. Furthermore, in another embodiment of the present invention, the content is 51 to 56% by mass.

It is necessary to lower the liquid crystal composition which maintains the viscosity and the response speed of the liquid crystal composition of the present invention, and the above lower limit value is high and the upper limit value is preferably high. In addition, it is necessary to increase the liquid crystal composition having a good Tni and good temperature stability in the liquid crystal composition of the present invention, and the above lower limit value is high and the upper limit value is preferably high. Further, in order to reduce the dielectric constant anisotropy in order to lower the holding driving voltage, it is preferable that the above lower limit value is low and the upper limit value is low.

R ^L1 and R ^L2 have a linear alkyl group having 1 to 5 carbon atoms and a linear carbon number of 1 to 4 in the case where the ring structure of the bond is phenyl (aromatic) (or The above a) alkoxy group or an alkenyl group having 4 to 5 carbon atoms is preferred, and the ring to which the bond is bonded is cyclohexane, pyran, or In the case of a saturated ring structure such as an alkane, a linear alkyl group having 1 to 5 carbon atoms, a linear alkoxy group having 1 to 4 (or more) carbon atoms, or a linear chain is used. An alkenyl group having 2 to 5 carbon atoms is preferred.

In the case where the compound represented by the formula (L) requires chemical stability of the liquid crystal composition, it is preferred that the compound does not have a chlorine atom in the molecule. The compound represented by the formula (L) is preferably, for example, a compound selected from the group of compounds represented by the formula (I).

R ¹¹ -A ¹¹ -A ¹² -R ¹² (I)

In the above formula (I), R ¹¹ and R ¹² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and A ¹¹ And A ¹² each independently represents a 1,4-cyclohexylene group, a 1,4-phenylene group, a 2-fluoro-1,4-phenylene group or a 3-fluoro-1,4-phenylene group.

The type of the compound which can be combined is not particularly limited, and can be appropriately combined and used in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one embodiment of the present invention. Or another embodiment of the present invention is two types. Further, in another embodiment of the present invention, there are three types. Furthermore, in another embodiment of the present invention, there are four types. Furthermore, in another embodiment of the present invention, there are five types. Furthermore, in another embodiment of the present invention, it is six or more.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (I) must be in accordance with low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, drip marks, afterimage, dielectric The performance required for coefficient anisotropy and the like is appropriately adjusted.

The content of the compound represented by the above formula (I) is, for example, 10 to 75% by mass in one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Or in another embodiment of the present invention, the content is from 10 to 70% by mass. Further, in another embodiment of the present invention, the content is 10 to 65% by mass. Furthermore, in another embodiment of the present invention, the foregoing The content is 10 to 60% by mass. Furthermore, in another embodiment of the present invention, the content is 15 to 60% by mass. Furthermore, in another embodiment of the present invention, the content is 15 to 59% by mass. Furthermore, in another embodiment of the present invention, the content is 15 to 56% by mass. Furthermore, in another embodiment of the present invention, the content is 15 to 52% by mass. Furthermore, in another embodiment of the present invention, the content is 15 to 51% by mass. Furthermore, in another embodiment of the present invention, the content is 15 to 49% by mass. Furthermore, in another embodiment of the present invention, the content is 15 to 48% by mass. Furthermore, in another embodiment of the present invention, the content is 15% to 47% by mass. Furthermore, in another embodiment of the present invention, the content is 15 to 45% by mass. Furthermore, in another embodiment of the present invention, the content is 15 to 44% by mass. Furthermore, in another embodiment of the present invention, the content is 15 to 43% by mass. Furthermore, in another embodiment of the present invention, the content is 15 to 41% by mass. Furthermore, in another embodiment of the present invention, the content is 15 to 39% by mass. Furthermore, in another embodiment of the present invention, the content is 15 to 38% by mass. Furthermore, in another embodiment of the present invention, the content is 15 to 35 mass%. Furthermore, in another embodiment of the present invention, the content is 15% to 33% by mass. Furthermore, in another embodiment of the present invention, the content is 15 to 31% by mass. Furthermore, in another embodiment of the present invention, the content is 15 to 30% by mass. Furthermore, in another embodiment of the present invention, the content is 15 to 29% by mass. Furthermore, in another embodiment of the present invention, the content is 15 to 28% by mass. Furthermore, in another embodiment of the present invention, the content is 15 to 20% by mass. Furthermore, in another embodiment of the present invention, the content is 17 to 60% by mass. Furthermore, in another embodiment of the present invention, the content is 20 to 60% by mass. Furthermore, in another embodiment of the present invention, The content is 27 to 60% by mass. Furthermore, in another embodiment of the present invention, the content is from 28 to 60% by mass. Furthermore, in another embodiment of the present invention, the content is 30 to 60% by mass. Furthermore, in another embodiment of the present invention, the content is 31 to 60% by mass. Furthermore, in another embodiment of the present invention, the content is 32 to 60% by mass. Furthermore, in another embodiment of the present invention, the content is from 33 to 60% by mass. Furthermore, in another embodiment of the present invention, the content is 34 to 60% by mass. Furthermore, in another embodiment of the present invention, the content is 35 to 60% by mass. Furthermore, in another embodiment of the present invention, the content is 36 to 60% by mass. Furthermore, in another embodiment of the present invention, the content is 37 to 60% by mass. Furthermore, in another embodiment of the present invention, the content is from 39 to 60% by mass. Furthermore, in another embodiment of the present invention, the content is 41 to 60% by mass. Furthermore, in another embodiment of the present invention, the content is 42 to 60% by mass. Furthermore, in another embodiment of the present invention, the content is 43 to 60% by mass. Furthermore, in another embodiment of the present invention, the content is 44 to 60% by mass. Furthermore, in another embodiment of the present invention, the content is 46 to 60% by mass. Furthermore, in another embodiment of the present invention, the content is 47 to 60% by mass. Furthermore, in another embodiment of the present invention, the content is 48 to 60% by mass. Furthermore, in another embodiment of the present invention, the content is 49 to 60% by mass. Furthermore, in another embodiment of the present invention, the content is 51 to 60% by mass. Furthermore, in another embodiment of the present invention, the content is 17 to 45% by mass. Furthermore, in another embodiment of the present invention, the content is 27 to 29% by mass. Furthermore, in another embodiment of the present invention, the content is 32% to 43% by mass. Furthermore, in another embodiment of the present invention, the content is 34% to 38% by mass. Furthermore, in another embodiment of the present invention The aforementioned content is 36 to 45% by mass. Furthermore, in another embodiment of the present invention, the content is 37 to 48% by mass. Furthermore, in another embodiment of the present invention, the content is 42 to 56% by mass. Furthermore, in another embodiment of the present invention, the content is 43 to 52% by mass. Furthermore, in another embodiment of the present invention, the content is 43 to 49% by mass. Furthermore, in another embodiment of the present invention, the content is 43% to 44% by mass. Furthermore, in another embodiment of the present invention, the content is 44 to 48% by mass. Furthermore, in another embodiment of the present invention, the content is 47 to 51% by mass.

It is necessary to lower the liquid crystal composition which maintains the viscosity and the response speed of the liquid crystal composition of the present invention, and the above lower limit value is high and the upper limit value is preferably high. Further, it is necessary to increase the Tni and the liquid crystal composition having good temperature stability in maintaining the liquid crystal composition of the present invention, and the above-mentioned lower limit value is moderately moderate and the upper limit value is preferably moderately moderate. Further, in order to reduce the dielectric constant anisotropy in order to lower the holding driving voltage, it is preferable that the above lower limit value is low and the upper limit value is low.

In the case where R ¹¹ and R ¹² are bonded to a phenyl group (aromatic), a linear alkyl group having 1 to 5 carbon atoms and a linear alkoxy group having 1 to 4 carbon atoms are used. a base or an alkenyl group having 4 to 5 carbon atoms is preferred, and the ring in which it is bonded is constructed as cyclohexane, pyran or In the case of a saturated ring structure such as an alkane, a linear alkyl group having 1 to 5 carbon atoms, a linear alkoxy group having 1 to 4 carbon atoms, or a linear carbon atom number 2 is used. The alkenyl group of 5 is preferred.

The compound represented by the above formula (I) is preferably at least one compound selected from the group consisting of compounds represented by the formula (I-1).

In the above formula (I-1), R ¹¹ and R ¹² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms.

The type of the compound which can be combined is not particularly limited, and can be appropriately combined and used in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one embodiment of the present invention. Or another embodiment of the present invention is two types. Further, in another embodiment of the present invention, there are three types. Furthermore, in another embodiment of the present invention, there are four types. Furthermore, in another embodiment of this invention, they are five or more types.

In the liquid crystal composition of the present invention, in the case where the compound represented by the formula (I-1) is blended, the content of the compound must be suitable according to low-temperature solubility, transfer temperature, electrical reliability, birefringence, and process. The properties required for properties, dripping marks, afterimages, and dielectric anisotropy are appropriately adjusted.

The content of the compound represented by the above formula (I-1) is, for example, 10 to 70% by mass in one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Or in another embodiment of the present invention, the content is from 10 to 60% by mass. Further, in another embodiment of the present invention, the content is 15 to 60% by mass. Furthermore, in another embodiment of the present invention, the content is 15 to 59% by mass. Furthermore, in another embodiment of the present invention, the content is 15 to 56% by mass. Furthermore, in another embodiment of the present invention, the content is 15 to 52% by mass. Furthermore, in another embodiment of the present invention, the content is 15 to 50% by mass. Furthermore, another implementation of the present invention The content in the form is 15 to 49% by mass. Furthermore, in another embodiment of the present invention, the content is 15 to 48% by mass. Furthermore, in another embodiment of the present invention, the content is 15% to 47% by mass. Furthermore, in another embodiment of the present invention, the content is 15 to 46% by mass. Furthermore, in another embodiment of the present invention, the content is 15 to 45% by mass. Furthermore, in another embodiment of the present invention, the content is 15 to 39% by mass. Furthermore, in another embodiment of the present invention, the content is 15 to 38% by mass. Furthermore, in another embodiment of the present invention, the content is 15 to 35 mass%. Furthermore, in another embodiment of the present invention, the content is 15% to 33% by mass. Furthermore, in another embodiment of the present invention, the content is 15 to 30% by mass. Furthermore, in another embodiment of the present invention, the content is 15 to 28% by mass. Furthermore, in another embodiment of the present invention, the content is 15 to 26% by mass. Furthermore, in another embodiment of the present invention, the content is 15 to 20% by mass. Further, in another embodiment of the present invention, the content is 17 to 60% by mass. Further, in another embodiment of the present invention, the content is 20 to 60% by mass. Further, in another embodiment of the present invention, the content is 21 to 60% by mass. Further, in another embodiment of the present invention, the content is 23 to 60% by mass. Further, in another embodiment of the present invention, the content is 26 to 60% by mass. Further, in another embodiment of the present invention, the content is 27 to 60% by mass. Furthermore, in another embodiment of the present invention, the content is 2 to 60% by mass. Further, in another embodiment of the present invention, the content is from 30 to 60% by mass. Further, in another embodiment of the present invention, the content is from 33 to 60% by mass. Further, in another embodiment of the present invention, the content is 34 to 60% by mass. Further, in another embodiment of the present invention, the content is 35 to 60% by mass. Furthermore, in another embodiment of the present invention, the content is 36 to 60% by mass. . Further, in another embodiment of the present invention, the content is 37 to 60% by mass. Further, in another embodiment of the present invention, the content is 38 to 60% by mass. Further, in another embodiment of the present invention, the content is from 39 to 60% by mass. Further, in another embodiment of the present invention, the content is 42 to 60% by mass. Further, in another embodiment of the present invention, the content is 43 to 60% by mass. Further, in another embodiment of the present invention, the content is 46 to 60% by mass. Further, in another embodiment of the present invention, the content is 47 to 60% by mass. Further, in another embodiment of the present invention, the content is 49 to 60% by mass. Furthermore, in another embodiment of the present invention, the content is 50 to 60% by mass. Further, in another embodiment of the present invention, the content is 17 to 45% by mass. Furthermore, in another embodiment of the present invention, the content is 21 to 24% by mass. Further, in another embodiment of the present invention, the content is from 27 to 38% by mass. Further, in another embodiment of the present invention, the content is from 28 to 29% by mass. Further, in another embodiment of the present invention, the content is 23 to 46% by mass. Further, in another embodiment of the present invention, the content is 34% to 38% by mass. Further, in another embodiment of the present invention, the content is 36 to 45% by mass. Further, in another embodiment of the present invention, the content is 37 to 48% by mass. Furthermore, in another embodiment of the present invention, the content is 42 to 48% by mass. Furthermore, in another embodiment of the present invention, the content is 38 to 49% by mass. Furthermore, in another embodiment of the present invention, the content is 42 to 56% by mass. Further, in another embodiment of the present invention, the content is 42 to 50% by mass. Furthermore, in another embodiment of the present invention, the content is 43 to 52% by mass. Further, in another embodiment of the present invention, the content is 46 to 47% by mass.

Decreasing the viscosity and response of the liquid crystal composition of the present invention In the case where a liquid crystal composition having a high speed is necessary, the above lower limit value is high and the upper limit value is preferably high. Further, it is necessary to increase the Tni and the liquid crystal composition having good temperature stability in maintaining the liquid crystal composition of the present invention, and the above-mentioned lower limit value is moderately moderate and the upper limit value is preferably moderately moderate. Further, in order to reduce the dielectric constant anisotropy in order to lower the holding driving voltage, it is preferable that the above lower limit value is low and the upper limit value is low.

In addition, the compound represented by the formula (I-1) is preferably at least one compound selected from the group consisting of the compounds represented by the formula (I-1-1).

In the above formula (I-1-1), R ¹² represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 5 carbon atoms.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (I-1-1) must be in accordance with low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, drip marks, and residue. The required performance such as shadow and dielectric anisotropy are appropriately adjusted.

The content of the compound represented by the above formula (I-1-1) is, for example, 1 to 35 mass% as an embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Or in another embodiment of the present invention, the content is 1% by mass to 30% by mass. Further, in another embodiment of the present invention, the content is 1% to 26% by mass. Furthermore, in another embodiment of the present invention, the content is 1 to 21% by mass. Furthermore, in another embodiment of the present invention, the content is from 1 to 16% by mass. Furthermore, in another embodiment of the present invention, the content is 1 to 15% by mass. Furthermore, another implementation of the present invention The content in the form is 1 to 13% by mass. Furthermore, in another embodiment of the present invention, the content is 1 to 12% by mass. Furthermore, in another embodiment of the present invention, the content is from 1 to 11% by mass. Furthermore, in another embodiment of the present invention, the content is 1 to 10% by mass. Furthermore, in another embodiment of the present invention, the content is 1% by mass to 8% by mass. Furthermore, in another embodiment of the present invention, the content is 1% by mass to 7% by mass. Furthermore, in another embodiment of the present invention, the content is 1 to 5% by mass. Furthermore, in another embodiment of the present invention, the content is 1 to 4% by mass. Furthermore, in another embodiment of the present invention, the content is 3 to 30% by mass. Furthermore, in another embodiment of the present invention, the content is 4 to 30% by mass. Furthermore, in another embodiment of the present invention, the content is 5 to 30% by mass. Furthermore, in another embodiment of the present invention, the content is 6 to 30% by mass. Furthermore, in another embodiment of the present invention, the content is 7 to 30% by mass. Furthermore, in another embodiment of the present invention, the content is 8 to 30% by mass. Furthermore, in another embodiment of the present invention, the content is 9 to 30% by mass. Furthermore, in another embodiment of the present invention, the content is 10 to 30% by mass. Furthermore, in another embodiment of the present invention, the content is 11 to 30% by mass. Furthermore, in another embodiment of the present invention, the content is 12 to 30% by mass. Furthermore, in another embodiment of the present invention, the content is 13 to 30% by mass. Furthermore, in another embodiment of the present invention, the content is 3 to 26% by mass. Furthermore, in another embodiment of the present invention, the content is 3 to 13% by mass. Furthermore, in another embodiment of the present invention, the content is 3 to 8% by mass. Furthermore, in another embodiment of the present invention, the content is 4 to 7% by mass. Furthermore, in another embodiment of the present invention, the content is 5 to 12% by mass. Furthermore, in another embodiment of the present invention, the content is 9-12. quality%. Furthermore, in another embodiment of the present invention, the content is 6 to 16% by mass. Furthermore, in another embodiment of the present invention, the content is 7 to 16% by mass. Furthermore, in another embodiment of the present invention, the content is 7 to 10% by mass. Furthermore, in another embodiment of the present invention, the content is 8 to 26% by mass. Furthermore, in another embodiment of the present invention, the content is 8 to 15% by mass. Furthermore, in another embodiment of the present invention, the content is 8 to 13% by mass. Furthermore, in another embodiment of the present invention, the content is 9 to 25% by mass. Furthermore, in another embodiment of the present invention, the content is 10 to 21% by mass. Furthermore, in another embodiment of the present invention, the content is 12 to 21% by mass. Furthermore, in another embodiment of the present invention, the content is 13 to 16% by mass. Furthermore, in another embodiment of the present invention, the content is 11 to 26% by mass.

Further, the compound represented by the above formula (I-1-1) is preferably a compound selected from the group consisting of compounds represented by formula (1.1) to formula (1.3), and formula (1.2) or formula (1.3) The compound represented is preferred, and especially the compound represented by the formula (1.3) is preferred.

In the case where the compounds represented by the formula (1.2) or the formula (1.3) are each used alone, the reaction rate can be effectively improved by increasing the content of the compound represented by the formula (1.2), and the compound represented by the formula (1.3) can be obtained. The content is in the range indicated below because the response speed is fast and electrical, light It is preferable to learn a highly reliable liquid crystal composition.

The content of the compound represented by the formula (1.3) is, for example, 1 to 35% by mass based on the total mass of the liquid crystal composition of the present invention. Or in another embodiment of the present invention, the content is 1% by mass to 30% by mass. Or in another embodiment of the present invention, the content is 1 to 25% by mass. Or in another embodiment of the present invention, the content is 1 to 21% by mass. Or in another embodiment of the present invention, the content is 1% to 18% by mass. Or in another embodiment of the present invention, the content is from 1 to 16% by mass. Or in another embodiment of the present invention, the content is from 1 to 15% by mass. Or in another embodiment of the present invention, the content is 1% to 13% by mass. Or in another embodiment of the present invention, the content is 1 to 12% by mass. Or in another embodiment of the present invention, the content is from 1 to 11% by mass. Or in another embodiment of the present invention, the content is 1 to 10% by mass. Or in another embodiment of the present invention, the content is 1% by mass to 8% by mass. Or in another embodiment of the present invention, the content is 1% by mass to 7% by mass. Or in another embodiment of the present invention, the content is 1 to 5% by mass. Or in another embodiment of the present invention, the content is 1 to 4% by mass. Or in another embodiment of the present invention, the content is from 3 to 21% by mass. Or in another embodiment of the present invention, the content is 4 to 21% by mass. Or in another embodiment of the present invention, the content is 5 to 21% by mass. Or in another embodiment of the present invention, the content is 6 to 21% by mass. Or in another embodiment of the present invention, the content is 7 to 21% by mass. Or in another embodiment of the present invention, the content is 8 to 21% by mass. Or in another embodiment of the present invention, the content is from 9 to 21% by mass. Or in another embodiment of the present invention, the content is 10 to 21% by mass. Or another embodiment of the present invention The content in the above state is 11 to 21% by mass. Or in another embodiment of the present invention, the content is from 12 to 21% by mass. Or in another embodiment of the present invention, the content is 13 to 21% by mass. Or in another embodiment of the present invention, the content is 3 to 13% by mass. Or in another embodiment of the present invention, the content is 3 to 8% by mass. Or in another embodiment of the present invention, the content is 4 to 7% by mass. Or in another embodiment of the present invention, the content is 5 to 12% by mass. Or in another embodiment of the present invention, the content is 9 to 12% by mass. Or in another embodiment of the present invention, the content is 6 to 16% by mass. Or in another embodiment of the present invention, the content is 10 to 16% by mass. Or in another embodiment of the present invention, the content is 13 to 16% by mass. Or in another embodiment of the present invention, the content is 7 to 16% by mass. Or in another embodiment of the present invention, the content is 7 to 10% by mass. Or in another embodiment of the present invention, the content is 8 to 18% by mass. Or in another embodiment of the present invention, the content is 8 to 15% by mass. Or in another embodiment of the present invention, the content is 8 to 13% by mass. Or in another embodiment of the present invention, the content is 9 to 13% by mass.

In addition, it is preferred that the compound represented by the formula (I-1) is at least one compound selected from the group consisting of the compounds represented by the formula (I-1-2).

In the above formula (I-1-2), R ¹² represents an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms, or an alkenyl group having 2 to 5 carbon atoms.

The type of the compound which can be combined is not particularly limited, and can be appropriately combined and used in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one embodiment of the present invention. Or another embodiment of the present invention is two types. Further, in another embodiment of the present invention, there are three types.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (I-1-2) must be in accordance with low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, drip marks, and afterimages. The required performance such as the dielectric anisotropy is appropriately adjusted.

The content of the compound represented by the above formula (I-1-2) is, for example, 1 to 55% by mass in one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Or in another embodiment of the present invention, the content is 1 to 50% by mass. Further, in another embodiment of the present invention, the content is from 1 to 49% by mass. Furthermore, in another embodiment of the present invention, the content is 1% to 47% by mass. Furthermore, in another embodiment of the present invention, the content is 1 to 45% by mass. Furthermore, in another embodiment of the present invention, the content is 1 to 44% by mass. Furthermore, in another embodiment of the present invention, the content is from 1 to 40% by mass. Furthermore, in another embodiment of the present invention, the content is from 1 to 39% by mass. Furthermore, in another embodiment of the present invention, the content is from 1 to 38% by mass. Furthermore, in another embodiment of the present invention, the content is from 1 to 36% by mass. Furthermore, in another embodiment of the present invention, the content is 1 to 35% by mass. Furthermore, in another embodiment of the present invention, the content is 1% to 32% by mass. Furthermore, in another embodiment of the present invention, the content is 1 to 30% by mass. Again, this In another embodiment of the invention, the content is from 1 to 28% by mass. Furthermore, in another embodiment of the present invention, the content is 1% to 27% by mass. Furthermore, in another embodiment of the present invention, the content is 1% to 26% by mass. Furthermore, in another embodiment of the present invention, the content is 1 to 24% by mass. Furthermore, in another embodiment of the present invention, the content is 1 to 21% by mass. Furthermore, in another embodiment of the present invention, the content is 1 to 20% by mass. Furthermore, in another embodiment of the present invention, the content is 1 to 19% by mass. Furthermore, in another embodiment of the present invention, the content is from 1 to 16% by mass. Furthermore, in another embodiment of the present invention, the content is 1 to 15% by mass. Furthermore, in another embodiment of the present invention, the content is 11 to 49% by mass. Furthermore, in another embodiment of the present invention, the content is from 12 to 49% by mass. Furthermore, in another embodiment of the present invention, the content is 13 to 49% by mass. Furthermore, in another embodiment of the present invention, the content is 15 to 49% by mass. Furthermore, in another embodiment of the present invention, the content is 16 to 49% by mass. Furthermore, in another embodiment of the present invention, the content is from 17 to 49% by mass. Furthermore, in another embodiment of the present invention, the content is 20 to 49% by mass. Furthermore, in another embodiment of the present invention, the content is 23 to 49% by mass. Furthermore, in another embodiment of the present invention, the content is 24 to 49% by mass. Furthermore, in another embodiment of the present invention, the content is 25 to 49% by mass. Furthermore, in another embodiment of the present invention, the content is 28 to 49% by mass. Furthermore, in another embodiment of the present invention, the content is from 30 to 49% by mass. Furthermore, in another embodiment of the present invention, the content is from 33 to 49% by mass. Furthermore, in another embodiment of the present invention, the content is 35 to 49% by mass. Furthermore, in another embodiment of the present invention, the content is 38 to 49% by mass. Again, this In another embodiment of the invention, the content is from 39 to 49% by mass. Furthermore, in another embodiment of the present invention, the content is 45 to 49% by mass. Furthermore, in another embodiment of the present invention, the content is 11 to 44% by mass. Furthermore, in another embodiment of the present invention, the content is 12 to 24% by mass. Furthermore, in another embodiment of the present invention, the content is 13 to 16% by mass. Furthermore, in another embodiment of the present invention, the content is 15 to 32% by mass. Furthermore, in another embodiment of the present invention, the content is 15 to 21% by mass. Furthermore, in another embodiment of the present invention, the content is 17 to 20% by mass. Furthermore, in another embodiment of the present invention, the content is 16 to 27% by mass. Furthermore, in another embodiment of the present invention, the content is 17 to 28% by mass. Furthermore, in another embodiment of the present invention, the content is 20 to 35% by mass. Furthermore, in another embodiment of the present invention, the content is 23 to 26% by mass. Furthermore, in another embodiment of the present invention, the content is 24 to 40% by mass. Furthermore, in another embodiment of the present invention, the content is 28 to 38% by mass. Furthermore, in another embodiment of the present invention, the content is 30% to 38% by mass. Furthermore, in another embodiment of the present invention, the content is 25 to 36% by mass. Furthermore, in another embodiment of the present invention, the content is 27 to 30% by mass. Furthermore, in another embodiment of the present invention, the content is 30 to 40% by mass. Furthermore, in another embodiment of the present invention, the content is 30% to 39% by mass. Furthermore, in another embodiment of the present invention, the content is 35 to 44% by mass. Furthermore, in another embodiment of the present invention, the content is 35 to 40% by mass. Furthermore, in another embodiment of the present invention, the content is from 33 to 47% by mass. Furthermore, in another embodiment of the present invention, the content is from 39 to 47% by mass. Furthermore, in another embodiment of the present invention, the content is 38 to 45% by mass.

Further, the compound represented by the formula (I-1-2) is preferably a compound selected from the group consisting of the compounds represented by the formula (2.1) to the formula (2.4), and the formula (2.2) to the formula (2.4) The compound represented is preferred. In particular, the compound represented by the formula (2.2) is preferred because it particularly improves the response speed of the liquid crystal composition of the present invention. Further, when Tni is required to be higher than the response speed, it is preferred to use a compound represented by formula (2.3) or formula (2.4). The content of the compound represented by the formula (2.3) and the formula (2.4) is set to be 30% by mass or more in order to improve the solubility at a low temperature, which is not preferable.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (2.2) is preferably 1% by mass or more and 55% by mass or less, and 1% by mass or more and 50% by mass or less based on the total mass of the liquid crystal composition of the present invention. Preferably, it is preferably 5 mass% or more and 50 mass% or less. In particular, it is 9% by mass or more and 47% by mass or less, 9% by mass or more and 15% by mass or less, 11% by mass or more and 44% by mass or less, 15% by mass or more and 32% by mass or less, and 20% by mass or more and 35% by mass or less. Hereinafter, it is 23% by mass or more and 26% by mass or less, 24% by mass or more and 40% by mass or less, 25% by mass or more and 36% by mass or less, 28% by mass or more and 38% by mass or less, and 30% by mass or more and 40% by mass or less. 30% by mass or more and 39% by mass or less, 30% by mass or more and 38% by mass or less, 33% by mass or more and 47% by mass or less, 35% by mass or more and 44% by mass or less, 35% by mass or more and 40% by mass or less, and 38% by mass or less The above 45 mass% or less, preferably 39 mass% or more and 47 mass% or less.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (2.3) is preferably 1% by mass or more and 30% by mass or less based on the total mass of the liquid crystal composition of the present invention, and 1% by mass or less by 25% by mass or less. Preferably, it is preferably 3 mass% or more and 25% by mass or less, more preferably 4 mass% or more and 22 mass% or less, more preferably 5 mass% or more and 22 mass% or less, more preferably 11 mass% or more and 22 mass% or less, and 13 mass% or more. 22% by mass or less is preferable, 4% by mass or more and 16% by mass or less is preferable, 4% by mass or more and 15% by mass or less is preferable, and 4% by mass or more and 10% by mass or less is preferable, and 5% by mass or more and 10% by mass or less is preferable. It is preferably 12% by mass or more and 15% by mass or less, and more preferably 13% by mass or more and 16% by mass or less.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (2.4) is preferably 1% by mass or more and 30% by mass or less, and 1% by mass or more and 25% by mass or less based on the total mass of the liquid crystal composition of the present invention. Preferably, it is preferably 3% by mass or more and 25% by mass or less, more preferably 4% by mass or more and 25% by mass or less, more preferably 12% by mass or more and 25% by mass or less, and particularly preferably 17% by mass or more and 25% by mass or less, and 20% by mass. % or more and 25% by mass or less is preferable, and 4% by mass or more and 20% by mass or less are preferable, and 4% by mass or more and 13% by mass or less are preferable, and 12% by mass or more and 24% by mass or less are preferable, and 17% by mass or more and 20% by mass or less are preferable. It is better.

The liquid crystal composition of the present invention may further contain a formula (2.5) having a structure similar to the compound represented by the formula (I-1-2). The compound shown.

It is preferred to adjust the content of the compound represented by the above formula (2.5) in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, birefringence, etc., and the total mass of the compound relative to the liquid crystal composition of the present invention. It is preferably 0 to 40% by mass, preferably 1 to 35% by mass, preferably 1 to 30% by mass, preferably 5 to 30% by mass, preferably 10 to 30% by mass, preferably 15 to 30%. The mass % is preferably, preferably 20 to 30% by mass, and preferably 25 to 30% by mass.

In the liquid crystal composition containing only one compound as the compound represented by the above formula (ii), the compound represented by the above formula (2.5), the compound represented by the formula (i), and the above formula are further contained. The total content of the compound represented by the above formula (2.5) and the total mass of the liquid crystal composition is preferably 5 to 60% by mass, more preferably 30 to 60% by mass. 45 to 60% by mass is more preferable, and 45 to 55% by mass is particularly preferable.

In addition, it is preferred that the compound represented by the above formula (I) is at least one compound selected from the group consisting of the compounds represented by the formula (I-2).

In the above formula (I-2), R ¹³ and R ¹⁴ each independently represent an alkyl group having 1 to 5 carbon atoms.

The type of the compound which can be combined is not particularly limited, and can be combined in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one embodiment of the present invention. Or another embodiment of the present invention is two types. Further, in another embodiment of the present invention, there are three types.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (I-2) must be such as low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, drip marks, afterimage, and The required properties such as the dielectric anisotropy are appropriately adjusted.

The content of the compound represented by the above formula (I-2) is, for example, 1 to 30% by mass in one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Or in another embodiment of the present invention, the content is 2 to 30% by mass. Furthermore, in another embodiment of the present invention, the content is 4 to 30% by mass. Furthermore, in another embodiment of the present invention, the content is 4 to 25% by mass. Furthermore, in another embodiment of the present invention, the content is 4 to 23% by mass.

Further, the compound represented by the above formula (I-2) is preferably at least one compound selected from the group consisting of compounds represented by formula (3.1) to formula (3.4), and formula (3.1), formula (3.3) And / or a compound represented by the formula (3.4) is preferred. In particular, the compound represented by the formula (3.2) is preferred because it particularly improves the response speed of the liquid crystal composition of the present invention. Further, when Tni is required to be higher than the response speed, it is preferred to use a compound represented by the formula (3.3) and/or the formula (3.4). The content of the compound represented by the formula (3.3) and the formula (3.4) is preferably 20% by mass or more in order to improve the solubility at a low temperature.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (3.3) is preferably 1% by mass or more and 25% by mass or less, and 1% by mass or more and 20% by mass or less based on the total mass of the liquid crystal composition of the present invention. The following is preferable, and it is preferably 1% by mass or more and 15% by mass or less, more preferably 1% by mass or more and 10% by mass or less, and more preferably 1% by mass or more and 5% by mass or less.

In the liquid crystal composition containing at least two kinds of compounds as the compound represented by the above formula (ii), when the compound represented by the above formula (3.3) is further contained, the compound represented by the above formula (i), the above-mentioned compound The total content of the compound represented by the formula (ii) and the compound represented by the above formula (3.3) is preferably 10 to 45% by mass, and preferably 20 to 45% by mass based on the total mass of the liquid crystal composition. 30 to 45 mass% is better, and 36 to 42 mass% is particularly good.

Further, the compound represented by the above formula (I) is preferably at least one compound selected from the group consisting of the compounds represented by the formula (I-3).

In the above formula (I-3), R ¹³ represents an alkyl group having 1 to 5 carbon atoms, and R ¹⁵ represents an alkoxy group having 1 to 4 carbon atoms.

The type of the compound which can be combined is not particularly limited, and can be combined in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one embodiment of the present invention. Or another embodiment of the present invention is two types. Further, in another embodiment of the present invention, there are three types.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (I-3) must be such as low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, drip marks, afterimage, and The required properties such as the dielectric anisotropy are appropriately adjusted.

The content of the compound represented by the above formula (I-3) is, for example, 3 to 30% by mass in one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Or in another embodiment of the present invention, the content is 4 to 30% by mass. Further, in another embodiment of the present invention, the content is 15 to 30% by mass. Furthermore, in another embodiment of the present invention, the content is 25 to 30% by mass. Furthermore, in another embodiment of the present invention, the content is 3 to 25% by mass. Furthermore, in another embodiment of the present invention, the content is 3 to 20% by mass. Furthermore, in another embodiment of the present invention, the content is 3 to 15% by mass. Furthermore, in another embodiment of the present invention, the content is 3 to 5% by mass.

In the case where the solubility in low temperature is emphasized, the effect is high if a certain amount is set. On the contrary, if the content is set to a small value, the effect is high. Furthermore, improving the characteristics of dripping marks and afterimages Shape, it is better to set the content range in the middle.

In addition, the compound represented by the above formula (I-3) is preferably at least one compound selected from the group consisting of compounds represented by formula (4.1) to formula (4.3), and the compound represented by formula (4.3). It is better.

The content of the compound represented by the above formula (4.3) is preferably 2% by mass or more and 30% by mass or less, more preferably 4% by mass or more and 30% by mass or less, and 6% by mass or more, based on the total mass of the liquid crystal composition of the present invention. 30% by mass or less is preferable, and 8 mass% or more and 30 mass% or less are preferable, and 10 mass% or more and 30 mass% or less are preferable, and 12 mass% or more and 30 mass% or less are preferable, and 14 mass% or more and 30 mass% or less are preferable. 16% by mass or more and 30% by mass or less is preferable, 18% by mass or more and 25% by mass or less is preferable, and 20% by mass or more and 24% by mass or less are preferable, and 22% by mass or more and 23% by mass or less are particularly preferable.

In addition, it is preferred that the compound represented by the above formula (I) is at least one compound selected from the group consisting of the compounds represented by the formula (I-4).

In the above formula (I-4), R ¹¹ and R ¹² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The type of the compound which can be combined is not particularly limited, and can be combined in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one embodiment of the present invention. Or another embodiment of the present invention is two types.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (I-4) must be such as low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, drip marks, afterimage, and The required properties such as the dielectric anisotropy are appropriately adjusted.

The content of the compound represented by the above formula (I-4) is, for example, 2 to 30% by mass in one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Or in another embodiment of the present invention, the content is 5 to 30% by mass. Furthermore, in another embodiment of the present invention, the content is 6 to 30% by mass. Furthermore, in another embodiment of the present invention, the content is 8 to 30% by mass. Furthermore, in another embodiment of the present invention, the content is 10 to 30% by mass. Furthermore, in another embodiment of the present invention, the content is 12 to 30% by mass. Furthermore, in another embodiment of the present invention, the content is 15 to 30% by mass. Furthermore, in another embodiment of the present invention, the content is 20 to 30% by mass. Furthermore, in another embodiment of the present invention, the content is 25 to 30% by mass. Furthermore, in another embodiment of the present invention, the content is 2 to 25% by mass. Furthermore, in another embodiment of the present invention, the content is 2 to 20% by mass. Furthermore, in another embodiment of the present invention, the content is 2 to 15% by mass. Furthermore, In another embodiment of the present invention, the content is 2 to 10% by mass. Furthermore, in another embodiment of the present invention, the content is 5 to 8 mass%.

In the case where a high birefringence is obtained, if the content is set more, the effect is higher. Conversely, if the content of the high Tni is emphasized, the effect is higher if the content is less set. Further, in the case of improving the characteristics of the drip mark and the afterimage, it is preferable to set the range of the content in the middle.

Further, the compound represented by the formula (I-4) is preferably at least one compound selected from the group consisting of compounds represented by the formulae (5.1) to (5.4), and is from the formula (5.2) to the formula (5.4). It is preferred that at least one compound selected from the group of compounds represented is preferred.

The content of the compound represented by the above formula (5.3) is preferably 1% by mass or more and 30% by mass or less based on the total mass of the liquid crystal composition of the present invention. Among these, for example, 1% by mass or more and 25% by mass or less, 1% by mass or more and 20% by mass or less, 1% by mass or more and 15% by mass or less, 1% by mass or more and 10% by mass or less, and 1% by mass or more and 8% by mass or less. The following is better.

Containing at least two compounds as the above formula (ii) In the liquid crystal composition of the compound of the above-mentioned formula (5.3), the compound represented by the above formula (i), the compound represented by the above formula (ii), and the above formula (5.3) The total content of the compound represented by the liquid crystal composition is preferably 10 to 50% by mass, preferably 20 to 50% by mass, more preferably 30 to 45% by mass, and 44 to 48% by mass. It is especially good.

The content of the compound represented by the above formula (5.4) is preferably 2% by mass or more and 30% by mass or less based on the total mass of the liquid crystal composition of the present invention. Among these, for example, 4% by mass or more and 30% by mass or less, 6% by mass or more and 30% by mass or less, 8% by mass or more and 30% by mass or less, 10% by mass or more and 30% by mass or less, and 12% by mass or more and 30% by mass or less. Hereinafter, 14% by mass or more and 30% by mass or less, 16% by mass or more and 30% by mass or less, 18% by mass or more and 30% by mass or less, 20% by mass or more and 30% by mass or less, 22% by mass or more and 30% by mass or less, and 23% by mass or less 30% by mass or less, 24% by mass or more and 30% by mass or less, 25% by mass or more and 30% by mass or less, or 4% by mass or more and 6% by mass or less, 4% by mass or more and 8% by mass or less, and 4% by mass or more and 10% by mass or more 5% by mass or less, 4% by mass or more and 12% by mass or less, 4% by mass or more and 14% by mass or less, 4% by mass or more and 16% by mass or less, 4% by mass or more and 18% by mass or less, 4% by mass or more and 20% by mass or less, 4 The mass% is 22% by mass or less, 4% by mass or more and 23% by mass or less, 4% by mass or more and 24% by mass or less, and preferably 4% by mass or more and 25% by mass or less.

Further, the compound represented by the above formula (I) is preferably at least one compound selected from the group consisting of the compounds represented by the formula (I-5).

In the above formula (I-5), R ¹¹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and R ¹² represents a carbon number. An alkyl group of 1 to 5, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The type of the compound which can be combined is not particularly limited, and can be combined in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one embodiment of the present invention. Or another embodiment of the present invention is two types.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (I-5) must be in accordance with low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, drip marks, afterimage, The required properties such as the dielectric anisotropy are appropriately adjusted.

The content of the compound represented by the above formula (I-5) is, for example, 1 to 30% by mass in one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Or in another embodiment of the present invention, the content is 1 to 25% by mass. Furthermore, in another embodiment of the present invention, the content is 1 to 20% by mass. Furthermore, in another embodiment of the present invention, the content is 1 to 15% by mass. Furthermore, in another embodiment of the present invention, the content is from 1 to 11% by mass. Furthermore, in another embodiment of the present invention, the content is 1% by mass to 8% by mass. Furthermore, in another embodiment of the present invention, the content is 1 to 5% by mass. Furthermore, another embodiment of the present invention The aforementioned content is 1 to 4% by mass. Furthermore, in another embodiment of the present invention, the content is 4 to 11% by mass. Furthermore, in another embodiment of the present invention, the content is 5 to 11% by mass. Furthermore, in another embodiment of the present invention, the content is 8 to 11% by mass. Furthermore, in another embodiment of the present invention, the content is 10 to 11% by mass.

In the case where the solubility in low temperature is emphasized, the effect is high if a certain amount is set. On the contrary, if the content is set to a small value, the effect is high. Further, in the case of improving the characteristics of the drip mark and the afterimage, it is preferable to set the range of the content in the middle.

In addition, the compound represented by the above formula (I-5) is preferably at least one compound selected from the group consisting of compounds represented by formula (6.1) to formula (6.6), and is represented by formula (6.3). The compound represented by 6.4), and/or formula (6.6) is preferred.

For example, the content of the compound represented by the above formula (6.6) is 1% by mass or more and 25 parts by mass based on the total mass of the liquid crystal composition of the present invention. The amount is preferably at most 1% by mass, preferably 1% by mass or more and 20% by mass or less, more preferably 1% by mass or more and 15% by mass or less, more preferably 1% by mass or more and 11% by mass or less, and most preferably 2% by mass or more and 11% by mass or less. It is preferably 5 mass% or more and 11 mass% or less.

In the liquid crystal composition containing only one compound as the compound represented by the above formula (ii), when the compound represented by the above formula (6.6) is further contained, the compound represented by the above formula (i), the above-mentioned compound The total content of the compound represented by the formula (ii) and the compound represented by the above formula (6.6) is preferably 10 to 40% by mass, more preferably 10 to 30% by mass, based on the total mass of the liquid crystal composition. 20 to 30% by mass is more preferable, and 25 to 30% by mass is particularly preferable.

In the liquid crystal composition containing at least two kinds of compounds as the compound represented by the above formula (ii), when the compound represented by the above formula (6.6) is further contained, the compound represented by the above formula (i), the above-mentioned The total content of the compound represented by the formula (ii) and the compound represented by the above formula (6.6) is preferably from 10 to 45% by mass, preferably from 20 to 45% by mass, based on the total mass of the liquid crystal composition. 33 to 45 mass% is more preferable, and 36 to 41 mass% is particularly good.

The liquid crystal composition of the present invention may further contain a compound represented by the formula (6.7) and/or the formula (6.8) as a compound represented by the formula (I-5).

The content of the compound represented by the above formula (6.7) is preferably adjusted according to the properties required for low-temperature solubility, transfer temperature, electrical reliability, birefringence, etc., and is contained with respect to the total mass of the liquid crystal composition of the present invention. The compound is preferably 2% by mass or more and 30% by mass or less, more preferably 3% by mass or more and 27% by mass or less, more preferably 5% by mass or more and 25% by mass or less, and most preferably 7% by mass or more and 23% by mass or less.

In addition, it is preferred that the compound represented by the above formula (I) is at least one compound selected from the group consisting of the compounds represented by the formula (I-6).

In the above formula (I-6), R ¹¹ and R ¹² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and X ¹¹ And X ¹² each independently represents a fluorine atom or a hydrogen atom, and any of X ¹¹ or X ¹² is a fluorine atom.

The content of the compound represented by the above formula (I-6) is preferably 2% by mass or more and 30% by mass or less, and preferably 4% by mass or more and 30% by mass or less based on the total mass of the liquid crystal composition of the present invention. The mass% or more is preferably 30% by mass or less, preferably 6 mass% or more and 30 mass% or less, preferably 9 mass% or more and 30 mass% or less, more preferably 12 mass% or more and 30 mass% or less, and 14 mass% or more and 30 mass% or less. The following is preferable, and it is preferably 16% by mass or more and 30% by mass or less, more preferably 18% by mass or more and 25% by mass or less, more preferably 20% by mass or more and 24% by mass or less, and most preferably 22% by mass or more and 23% by mass or less. It is better.

Further, the compound represented by the formula (I-6) is preferably a compound represented by the formula (7.1).

Alternatively, the compound represented by the formula (I) is preferably a compound selected from the group consisting of the compounds represented by the formula (I-7).

In the above formula (I-7), R ¹¹ and R ¹² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and X. ¹² denotes a fluorine atom or a chlorine atom.

The content of the compound represented by the above formula (I-7) is preferably 1% by mass or more and 20% by mass or less, and preferably 1% by mass or more and 15% by mass or less based on the total mass of the liquid crystal composition of the present invention. The mass% or more is preferably 10% by mass or less, and preferably 1% by mass or more and 5% by mass or less.

Further, the compound represented by the formula (I-7) is preferably a compound represented by the formula (8.1).

The content of the compound represented by the above formula (8.1) is relative to the present The total mass of the liquid crystal composition of the invention is preferably 1% by mass or more and 20% by mass or less. Among these, for example, it is preferably 1% by mass or more and 15% by mass or less, 1% by mass or more and 10% by mass or less, and preferably 1% by mass or more and 3% by mass or less.

In the liquid crystal composition containing only one compound as the compound represented by the above formula (ii), when the compound represented by the above formula (8.1) is further contained, the compound represented by the above formula (i), the above-mentioned compound The total content of the compound represented by the formula (ii) and the compound represented by the above formula (8.1) is preferably from 5 to 40% by mass, preferably from 5 to 30% by mass, based on the total mass of the liquid crystal composition. 5 to 20% by mass is more preferable, and 10 to 15% by mass is particularly preferable.

In addition, it is preferred that the compound represented by the above formula (I) is at least one compound selected from the group consisting of the compounds represented by the formula (I-8).

In the above formula (I-8), R ¹⁶ and R ¹⁷ each independently represent an alkenyl group having 2 to 5 carbon atoms.

The type of the compound which can be combined is not particularly limited, and one type to three types may be preferably combined in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (I-8) is based on low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, dripping marks, afterimage, and dielectric anisotropy. Claim The performance is preferably from 1 to 30% by mass, preferably from 1 to 25% by mass, preferably from 1 to 20% by mass, preferably from 1 to 18% by mass, based on the total mass of the liquid crystal composition of the present invention. 18% by mass is preferred, 4 to 9% by mass is preferred, and 4 to 6% by mass is preferred.

Further, the compound represented by the above formula (I-8) is preferably at least one compound selected from the group consisting of compounds represented by formula (9.1) to formula (9.10), and is represented by formula (9.2). 9.4), and/or a compound represented by the formula (9.7) is preferred.

Or / again, a compound example represented by the above formula (L) It is preferred that at least one compound selected from the compounds represented by the formula (II) is used.

In the above formula (II), R ²¹ and R ²² each independently represent an alkenyl group having 2 to 5 carbon atoms, an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and A ² represents 1,4-cyclohexylene or 1,4-phenylene, Q ² represents a single bond, -COO-, -CH ₂ -CH ₂ - or -CF ₂ O-. However, the compound represented by the above formula (ii) is excluded.

The type of the compound which can be combined is not particularly limited, and can be combined in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one embodiment of the present invention. Or another embodiment of the present invention is two types. Further, still another embodiment of the present invention is three types. Furthermore, in another embodiment of this invention, they are four or more types.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (II) must be in accordance with low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, drip marks, afterimage, dielectric The performance required for coefficient anisotropy and the like is appropriately adjusted.

The content of the compound represented by the above formula (II) is, for example, 3 to 35 mass% as an embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Or in another embodiment of the present invention, the content is 3 to 30% by mass. Furthermore, in another embodiment of the present invention, the content is 3 to 25% by mass. Furthermore, in another embodiment of the present invention, The content is 3 to 21% by mass. Furthermore, in another embodiment of the present invention, the content is 3 to 20% by mass. Furthermore, in another embodiment of the present invention, the content is 3 to 18% by mass. Furthermore, in another embodiment of the present invention, the content is 3 to 15% by mass. Furthermore, in another embodiment of the present invention, the content is 3 to 12% by mass. Furthermore, in another embodiment of the present invention, the content is 4 to 21% by mass. Furthermore, in another embodiment of the present invention, the content is 11 to 21% by mass. Furthermore, in another embodiment of the present invention, the content is 13 to 21% by mass. Furthermore, in another embodiment of the present invention, the content is 15 to 21% by mass. Furthermore, in another embodiment of the present invention, the content is 16 to 21% by mass. Furthermore, in another embodiment of the present invention, the content is 4 to 12% by mass. Furthermore, in another embodiment of the present invention, the content is 11 to 20% by mass. Furthermore, in another embodiment of the present invention, the content is 13 to 15% by mass. Furthermore, in another embodiment of the present invention, the content is 15 to 18% by mass.

In addition, the compound represented by the above formula (II) is preferably at least one compound selected from the group consisting of compounds represented by the formula (II-1).

In the above formula (II-1), R ²¹ and R ²² each independently represent an alkenyl group having 2 to 5 carbon atoms, an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The content of the compound represented by the above formula (II-1) is based on low-temperature solubility, transfer temperature, electrical reliability, birefringence, and the like. The required performance is preferably adjusted to be 4% by mass or more and 24% by mass or less, preferably 8% by mass or more and 18% by mass or less, and more preferably 12% by mass or more and 14% by mass or less.

Further, the compound represented by the formula (II-1) is preferably a compound represented by the formula (10.1) and/or the formula (10.2), for example.

In addition, it is preferred that the compound represented by the above formula (II) is at least one compound selected from the group consisting of compounds represented by the formula (II-3).

In the above formula (II-3), R ²⁵ represents an alkyl group having 1 to 5 carbon atoms, and R ²⁴ represents an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The type of the compound which can be combined is not particularly limited, and it is preferable to contain one to three kinds of these compounds in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (II-3) must be such as low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, drip marks, afterimage, and dielectric anisotropy. The required performance is adjusted as appropriate.

The preferred content of the compound represented by the above formula (II-3) is, for example, 2 to 45% by mass based on the total mass of the liquid crystal composition of the present invention. Among these, for example, 5 to 45% by mass, 8 to 45% by mass, 11 to 45% by mass, 14 to 45% by mass, 17 to 45% by mass, 20 to 45% by mass, and 23 to 45% by mass, 26 to 45 mass%, 29 to 45 mass%, or 2 to 45 mass%, 2 to 40 mass%, 2 to 35 mass%, 2 to 30 mass%, 2 to 25 mass%, 2 to 20 mass%, 2 to 15% by mass and 2 to 10% by mass are preferred.

In addition, the compound represented by the above formula (II-3) is preferably at least one compound selected from the group consisting of compounds represented by the formula (12.1) to the formula (12.3), and represented by the formula (12.3). The compound is preferred.

The compound represented by the formula (12.1), the compound represented by the formula (12.2), or the formula (12.2) may be contained in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. 12.1) Both the compound represented by the formula and the compound represented by the formula (12.2).

The content of the compound represented by the formula (12.1) is preferably 3% by mass or more and 40% by mass or less, more preferably 5% by mass or more and 40% by mass or less, and 7% by mass or more based on the total mass of the liquid crystal composition of the present invention. The mass% or less is preferably 9 mass% or more and 40 mass% or less, preferably 11 mass%. 40% by mass or less is preferable, and 12% by mass or more and 40% by mass or less is preferable, and 13% by mass or more and 40% by mass or less is preferable, and 18% by mass or more and 30% by mass or less is preferable, and 21% by mass or more and 25% by mass or less is preferable. good.

In addition, the content of the compound represented by the formula (12.2) is preferably 3% by mass or more and 40% by mass or less, more preferably 5% by mass or more and 40% by mass or less, and 8% by mass or less based on the total mass of the liquid crystal composition of the present invention. 40% by mass or less is preferable, 10% by mass or more and 40% by mass or less is preferable, and 12% by mass or more and 40% by mass or less is preferable, and 15% by mass or more and 40% by mass or less is preferable, and 17% by mass or more and 30% by mass or less is preferable. Preferably, it is preferably 19% by mass or more and 25% by mass or less.

When both the compound represented by the formula (12.1) and the compound represented by the formula (12.2) are contained, the total mass of the compound of the two is 15% by mass or more and 45% by mass based on the total mass of the liquid crystal composition of the present invention. The following is preferable, and it is preferably 19% by mass or more and 45% by mass or less, more preferably 24% by mass or more and 40% by mass or less, and more preferably 30% by mass or more and 35% by mass or less.

In addition, the content of the compound represented by the formula (12.3) is preferably 0.05% by mass or more and 2% by mass or less based on the total mass of the liquid crystal composition of the present invention, and preferably 0.1% by mass or more and 1% by mass or less, and 0.2% by mass or less. The above 0.5% by mass or less is preferred. The compound represented by the formula (12.3) may also be an optically active compound.

In addition, the compound represented by the formula (II-3) is preferably at least one compound selected from the group consisting of compounds represented by the formula (II-3-1).

In the above formula (II-3-1), R ²⁵ represents an alkyl group having 1 to 5 carbon atoms, and R ²⁶ represents an alkoxy group having 1 to 4 carbon atoms.

The type of the compound which can be combined is not particularly limited, and it is preferable to contain one to three kinds of these compounds in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (II-3-1) is preferably adjusted according to the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence, and is 1% by mass or more and 24% by mass. It is preferable that it is less than %, and it is preferable that it is 4 mass % or more and 18 mass % or less, and it is preferable that it is 6 mass % or more and 14 mass % or less.

Further, the compound represented by the formula (II-3-1) is preferably at least one compound selected from the group consisting of compounds represented by the formula (13.1) to the formula (13.4), particularly the formula (13.3). The compound represented is preferred.

Or, the compound represented by the above formula (II) is at least one selected from the group of compounds represented by the formula (II-4). The composition is preferred.

In the above formula (II-4), R ²¹ and R ²² each independently represent an alkenyl group having 2 to 5 carbon atoms, an alkyl group having 1 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.

It is preferable to contain only one type of these compounds, or two or more types, and it is preferable to mix suitably according to the required performance. The type of the compound which can be combined is not particularly limited, and it is preferable to contain one or two kinds of these compounds in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. It is better to contain 1~3 kinds.

The content of the compound represented by the formula (II-4) is preferably 1% by mass or more and 15% by mass or less, more preferably 2% by mass or more and 15% by mass or less, based on the total mass of the liquid crystal composition of the present invention. % or more is preferably 15% by mass or less, preferably 4% by mass or more and 12% by mass or less, and preferably 5% by mass or more and 7% by mass or less.

Further, the compound represented by the formula (II-4) is preferably at least one compound selected from the group consisting of compounds represented by the formula (14.1) to the formula (14.5), particularly the formula (14.2), and / or a compound represented by the formula (14.5) is preferred.

Further, the compound represented by the above formula (L) is preferably at least one compound selected from the group consisting of compounds represented by the formula (III).

In the above formula (III), R ³¹ and R ³² each independently represent an alkenyl group having 2 to 5 carbon atoms, an alkyl group having 1 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.

The content of the compound represented by the above formula (III) is preferably 1% by mass or more and 25% by mass or less based on the total mass of the liquid crystal composition of the present invention, in consideration of the required solubility and birefringence. It is preferably 2% by mass or more and 20% by mass or less, more preferably 2% by mass or more and 15% by mass or less, and more preferably 2% by mass or more and 10% by mass or less. It is preferably contained in an amount of 4% by mass or more and 6% by mass or less.

Further, the compound represented by the above formula (III) is preferably a compound represented by the formula (15.1) and/or the formula (15.2), and particularly preferably a compound represented by the formula (15.1).

Further, the compound represented by the formula (III) is preferably at least one compound selected from the group of compounds represented by the formula (III-1).

In the above formula (III-1), R ³³ represents an alkenyl group having 2 to 5 carbon atoms, and R ³² represents an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound represented by the above formula (III-1) is preferably adjusted in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence, and is relative to the liquid crystal composition of the present invention. The total mass is preferably 4% by mass or more and 23% by mass or less, more preferably 6% by mass or more and 18% by mass or less, and more preferably 10% by mass or more and 13% by mass or less.

The compound represented by the above formula (III-1) is preferably a compound represented by the formula (16.1) and/or the formula (16.2).

Further, the compound represented by the above formula (III) is preferably at least one compound selected from the group consisting of the compounds represented by the formula (III-2).

In the above formula (III-2), R ³¹ represents an alkyl group having 1 to 5 carbon atoms, and R ³⁴ represents an alkoxy group having 1 to 4 carbon atoms.

The content of the compound represented by the above formula (III-2) is preferably adjusted in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence, and is relative to the liquid crystal composition of the present invention. The total mass is preferably 4% by mass or more and 23% by mass or less, more preferably 6% by mass or more and 18% by mass or less, and more preferably 10% by mass or more and 13% by mass or less.

Further, the compound represented by the formula (III-2) is preferably at least one compound selected from the group consisting of compounds represented by the formula (17.1) to the formula (17.3), particularly represented by the formula (17.3). The compound is preferred.

Further, the compound represented by the above formula (L) is preferably at least one compound selected from the group of compounds represented by the formula (IV).

In the above formula (IV), R ⁴¹ and R ⁴² each independently represent an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and X ⁴¹ and X ⁴² each independently represent a hydrogen atom or a fluorine atom.

The kind of the compound which can be combined is not particularly limited, and can be appropriately combined in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one embodiment of the present invention. Or another embodiment of the present invention is two types. Furthermore, in another embodiment of the present invention, there are three types. Furthermore, in another embodiment of the present invention, there are four types. Furthermore, in another embodiment of the present invention, there are five types. Furthermore, in another embodiment of the present invention, it is six or more.

In addition, the compound represented by the above formula (IV) is preferably at least one compound selected from the group consisting of compounds represented by the formula (IV-1).

In the above formula (IV-1), R ⁴³ and R ⁴⁴ each independently represent an alkyl group having 1 to 5 carbon atoms.

The content of the compound represented by the above formula (IV-1) must be such as low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, drip marks, afterimage, and dielectric anisotropy. The required performance is adjusted as appropriate.

The content of the compound represented by the above formula (IV-1) is, for example, 1 to 35% by mass based on the total mass of the liquid crystal composition of the present invention. Furthermore, in another embodiment of the present invention, the content is 1 to 30% by mass. Furthermore, in another embodiment of the present invention, the content is 1% to 26% by mass. Furthermore, in another embodiment of the present invention, the content is 1 to 22% by mass. Furthermore, in another embodiment of the present invention, the content is 1 to 10% by mass. Furthermore, in another embodiment of the present invention, the content is 1% by mass to 8% by mass. Furthermore, in another embodiment of the present invention, the content is 1% to 6% by mass. Furthermore, in another embodiment of the present invention, the content is 1% by mass to 3% by mass. Furthermore, in another embodiment of the present invention, the content is 1% by mass to 2% by mass. Furthermore, in another embodiment of the present invention, the content is 2 to 26% by mass. Furthermore, in another embodiment of the present invention, the content is 3 to 26% by mass. Furthermore, in another embodiment of the present invention, the content is 11 to 26% by mass. Furthermore, in another embodiment of the present invention, the content is 20 to 26% by mass. Furthermore, in another embodiment of the present invention, the content is 2 to 8% by mass. Furthermore, in another embodiment of the present invention, the content is 2 to 6% by mass. Furthermore, in another embodiment of the present invention, the content is 2 to 3% by mass. Furthermore, in another embodiment of the present invention, the content is 11 to 22% by mass.

Further, the compound represented by the formula (IV-1) is, for example, from At least one compound selected from the group consisting of the compounds represented by the formulae (18.1) to (18.9) is preferred.

The type of the compound which can be combined is not particularly limited, and it is preferable to contain one to three kinds of these compounds, and one type to 4 Kind to be better. Further, the molecular weight distribution of the selected compound is effective even if it is broad, and for example, one type of compound represented by the formula (18.1) or (18.2) is selected, and it is represented by the formula (18.4) or (18.5). One of the compounds, one compound derived from the formula (18.6) or the formula (18.7), and one compound derived from the compound represented by the formula (18.8) or (18.9), and these are appropriately combined. . Among them, a compound represented by the formula (18.1), the formula (18.3), the formula (18.4), the formula (18.6) and the formula (18.9) is preferred.

In the case where only one type is contained, the compound represented by the formula (18.4) is preferably selected, and in the case of two types, the compound represented by the selected formulas (18.1) and (18.6) is preferable, and three kinds of cases are preferable. Among them, preferred are compounds represented by the formulas (18.1), (18.4) and (18.6).

In addition, it is preferred that the compound represented by the above formula (IV) is at least one compound selected from the group consisting of compounds represented by the formula (IV-2).

In the above formula (IV-2), R ⁴⁵ and R ⁴⁶ each independently represent an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and at least one of them represents a carbon number of 2 to 5. Alkenyl; X ⁴¹ and X ⁴² each independently represent a hydrogen atom or a fluorine atom.

The type of the compound which can be combined is not particularly limited, and can be appropriately combined in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (IV-2) must be such as low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, drip marks, afterimage, and dielectric anisotropy. The required performance is adjusted as appropriate. For example, the content of the compound represented by the above formula (IV-2) is preferably from 1 to 20% by mass based on the total mass of the liquid crystal composition of the present invention. The content is more preferably, for example, 1 to 11% by mass, 2 to 11% by mass, 4 to 11% by mass, 1 to 6% by mass, 1 to 4% by mass, or 2 to 6% by mass.

In the liquid crystal composition containing only one compound as the compound represented by the above formula (ii), in the case where the compound represented by the above formula (IV-2) is further contained, the compound represented by the above formula (i) The total content of the compound represented by the above formula (ii) and the compound represented by the above formula (IV-2) is preferably 10 to 40% by mass, and 10 to 30% based on the total mass of the liquid crystal composition. The mass % is preferably, 15 to 30% by mass is more preferable, and 20 to 25% by mass is particularly preferable.

Further, the compound represented by the formula (IV-2) is preferably at least one compound selected from the group consisting of compounds represented by the formula (19.1) to the formula (19.8), wherein, in particular, the formula (19.1) And / or a compound represented by the formula (19.2) is preferred.

Even if the compound selected as the component of the liquid crystal composition has a broad molecular weight distribution and its solubility is effective, from the viewpoint of improving the solubility of the liquid crystal composition, for example, each is selected from the formula (19.1) or (19.2). One of the compounds shown, one of the compounds represented by the formula (19.3) or (19.4), one of the compounds represented by the formula (19.5) or the formula (19.6), and the formula (19.7) or 19.8) One compound of the compound represented, and these are preferably combined as appropriate.

Containing at least two compounds as the above formula (ii) In the liquid crystal composition of the compound of the above-mentioned formula (19.1), the compound represented by the above formula (i), the compound represented by the above formula (ii), and the above formula (19.1) The total content of the compound represented by the liquid crystal composition is preferably 11 to 45 mass%, more preferably 20 to 40 mass%, more preferably 25 to 40 mass%, and 33 to 39 mass%. It is especially good.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (19.2) is 1% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. The above 20% by mass or less is preferable, and 1% by mass or more and 15% by mass or less is preferable, and 1% by mass or more and 11% by mass or less is preferable, and 1% by mass or more and 6% by mass or less is preferable, and 1% by mass or more and 4% by mass or less is preferable. Preferably, it is preferably 1% by mass or more and 2% by mass or less.

In the liquid crystal composition containing only one compound as the compound represented by the above formula (ii), when the compound represented by the above formula (19.2) is further contained, the compound represented by the above formula (i), the above-mentioned compound The total content of the compound represented by the formula (ii) and the compound represented by the above formula (19.2) is preferably 10 to 40% by mass, and preferably 15 to 35% by mass based on the total mass of the liquid crystal composition. 15~30% by mass is better, and 18~25% by mass is particularly good.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (19.4) is 3 mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. % or more and 25% by mass or less is preferable, and 5 mass% or more and 20 mass% or less are preferable, and 5 mass% or more and 15 mass% or less are preferable, and 7 mass% or more is preferable. 10% by mass or less is preferred.

Further, the compound represented by the formula (L) is preferably at least one compound selected from the group of compounds represented by the formula (V).

In the above formula (V), R ⁵¹ and R ⁵² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and A ⁵¹ and A ⁵² each independently represents a 1,4-cyclohexylene group or a 1,4-phenylene group, Q ⁵ represents a single bond or -COO-, and X ⁵¹ and X ⁵² each independently represent a fluorine atom or a hydrogen atom.

The type of the compound which can be combined is not particularly limited, and can be appropriately combined in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one of the embodiments of the present invention. Or another embodiment of the present invention is two types. Furthermore, in another embodiment of the present invention, there are three types. Furthermore, in another embodiment of the present invention, there are four types.

The content of the compound represented by the above formula (V) is, for example, 1 to 25% by mass in one embodiment, based on the total mass of the liquid crystal composition of the present invention. Furthermore, in another embodiment of the present invention, the content is 1 to 20% by mass. Furthermore, in another embodiment of the present invention, the content is 1 to 19% by mass. Furthermore, in another embodiment of the present invention, the content is 1 to 10% by mass. Furthermore, in another embodiment of the present invention, the content is 1% by mass to 9% by mass. Furthermore, another embodiment of the present invention The above content is from 1 to 8% by mass. Furthermore, in another embodiment of the present invention, the content is 1% by mass to 7% by mass. Furthermore, in another embodiment of the present invention, the content is 1 to 5% by mass. Furthermore, in another embodiment of the present invention, the content is 1% by mass to 3% by mass. Furthermore, in another embodiment of the present invention, the content is 1% by mass to 2% by mass. Furthermore, in another embodiment of the present invention, the content is 2 to 19% by mass. Furthermore, in another embodiment of the present invention, the content is 5 to 19% by mass. Furthermore, in another embodiment of the present invention, the content is 9 to 19% by mass. Furthermore, in another embodiment of the present invention, the content is 2 to 8% by mass. Furthermore, in another embodiment of the present invention, the content is 6 to 8% by mass.

Further, the compound represented by the formula (V) is preferably a compound represented by the formula (V-1).

In the above formula (V-1), R ⁵¹ and R ⁵² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and X. ⁵¹ and X ⁵² each independently represent a fluorine atom or a hydrogen atom.

Further, the compound represented by the above formula (V-1) is preferably a compound represented by the formula (V-1-1).

In the above formula (V-1-1), R ⁵¹ and R ⁵² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms. .

The compound represented by the above formula (V-1-1) is preferably contained in an amount of 1% by mass or more and 15% by mass or less based on the total mass of the liquid crystal composition of the present invention, and preferably 1% by mass or more and 10% by mass or less. The content is preferably 3% by mass or more and 10% by mass or less, more preferably 3% by mass or more and 7% by mass or less, more preferably 3% by mass or more and 5% by mass or less, and particularly preferably 3% by mass or more and 4% by mass or less.

Further, the compound represented by the formula (V-1-1) is preferably at least one compound selected from the group consisting of the compounds represented by the formula (20.1) to the formula (20.4), and is represented by the formula (20.2). The compound is preferred.

Further, the compound represented by the above formula (V-1) is preferably a compound represented by the formula (V-1-2).

In the above formula (V-1-2), R ⁵¹ and R ⁵² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms. .

The compound represented by the above formula (V-1-2) is preferably contained in an amount of 1% by mass or more and 15% by mass or less, and preferably 1% by mass or more and 10% by mass or less, based on the total mass of the liquid crystal composition of the present invention. It is preferably contained in an amount of 1% by mass or more and 7% by mass or less, and more preferably 1% by mass or more and 5% by mass or less.

Further, the compound represented by the formula (V-1-2) is preferably at least one compound selected from the group consisting of the compounds represented by the formula (21.1) to the formula (21.3), and represented by the formula (21.1). The compound is preferred.

The content of the compound represented by the above formula (21.1) is preferably 1% by mass or more and 15% by mass or less, and more preferably 1% by mass or more and 10% by mass or less, and more preferably 1% by mass or more, based on the total mass of the liquid crystal composition of the present invention. It is preferably 5 mass% or less, more preferably 1% by mass or more and 5% by mass or less, and more preferably 4% by mass or more and 5% by mass or less.

The liquid crystal composition containing at least two kinds of compounds as the compound represented by the above formula (ii), the compound represented by the above formula (i), the compound represented by the above formula (ii), and the above formula (21.1) The total content of the compound represented is preferably from 10 to 45% by mass, preferably from 20 to 40% by mass, and from 25 to 35% by mass based on the total mass of the liquid crystal composition. More preferably, 25 to 30% by mass is particularly good.

Further, the compound represented by the above formula (V-1) is preferably a compound represented by the formula (V-1-3).

In the above formula (V-1-3), R ⁵¹ and R ⁵² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms. .

The compound represented by the above formula (V-1-3) is preferably contained in an amount of 1% by mass or more and 15% by mass or less, and preferably 2% by mass or more and 15% by mass or less, based on the total mass of the liquid crystal composition of the present invention. It is preferably 3% by mass or more and 10% by mass or less, and more preferably 4% by mass or more and 8% by mass or less.

Further, the compound represented by the formula (V-1-3) is preferably at least one compound selected from the group consisting of compounds represented by the formula (22.1) to the formula (22.3), and represented by the formula (22.1). Compounds are preferred.

Or / /, the compound represented by the general formula (V) is a general formula The compound represented by (V-2) is preferred.

In the above formula (V-2), R ⁵¹ and R ⁵² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and X. ⁵¹ and X ⁵² each independently represent a fluorine atom or a hydrogen atom.

The kind of the compound which can be combined is not particularly limited, and can be appropriately combined in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one embodiment of the present invention. Or another embodiment of the present invention is two or more.

The content of the compound represented by the above formula (V-2) is, for example, 1 to 30% by mass in one embodiment, based on the total mass of the liquid crystal composition of the present invention. Furthermore, in another embodiment of the present invention, the content of the compound is from 1 to 25% by mass. Furthermore, in another embodiment of the present invention, the content of the compound is from 1 to 20% by mass. Furthermore, in another embodiment of the present invention, the content of the compound is from 1 to 19% by mass. Furthermore, in another embodiment of the present invention, the content of the compound is from 1 to 10% by mass. Furthermore, in another embodiment of the present invention, the content of the compound is from 1 to 8% by mass. Furthermore, in another embodiment of the present invention, the content of the compound is from 1 to 5% by mass. Furthermore, in another embodiment of the present invention, the content of the compound is from 1 to 4% by mass. Furthermore, in another embodiment of the present invention, the content of the compound is from 2 to 19% by mass. Furthermore, in another embodiment of the present invention, the content of the compound is 5 to 19% by mass. . Furthermore, in another embodiment of the present invention, the content of the compound is from 10 to 19% by mass. Furthermore, in another embodiment of the present invention, the content of the compound is from 2 to 4% by mass. Furthermore, in another embodiment of the present invention, the content of the compound is from 6 to 8% by mass.

In the case where the liquid crystal composition of the present invention is expected to have a high Tni embodiment, the content of the compound represented by the above formula (V-2) is preferably more, and in the case where the low viscosity embodiment is desired, the content is made. Less is better.

In addition, the compound represented by the above formula (V-2) is preferably a compound represented by the formula (V-2-1).

In the above formula (V-2-1), R ⁵¹ and R ⁵² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms. .

The compound represented by the above formula (V-2-1) is preferably contained in an amount of 1% by mass or more and 25% by mass or less, and preferably 1% by mass or more and 20% by mass or less, based on the total mass of the liquid crystal composition of the present invention. It is preferably 1% by mass or more and 19% by mass or less, more preferably 1% by mass or more and 10% by mass or less, more preferably 2% by mass or more and 19% by mass or less, and most preferably 6% by mass or more and 19% by mass or less, and preferably 10% by mass or more. The mass% or more is preferably 19% by mass or less, more preferably 2% by mass or more and 4% by mass or less, and more preferably 6% by mass or more and 8% by mass or less.

In addition, the compound represented by the above formula (V-2-1) is preferably at least one compound selected from the group consisting of compounds represented by formula (23.1) to formula (23.4), and is represented by formula (23.1). And/or a compound represented by the formula (23.2) is preferred.

Alternatively, the compound represented by the above formula (V-2) is preferably a compound represented by the formula (V-2-2).

In the above formula (V-2-2), R ⁵¹ and R ⁵² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms. .

The compound represented by the above formula (V-2-2) is preferably 2% by mass or more and 16% by mass or less, and preferably 3% by mass or more and 13% by mass or less, based on the total mass of the liquid crystal composition of the present invention. Contains 4 masses More than 10% by mass or less is preferred.

In addition, the compound represented by the above formula (V-2-2) is preferably at least one compound selected from the group consisting of compounds represented by formula (24.1) to formula (24.4), and is represented by formula (24.1). And / or a compound represented by the formula (24.2) is preferred.

Alternatively, the compound represented by the above formula (V) is preferably a compound represented by the formula (V-3).

In the above formula (V-3), R ⁵¹ and R ⁵² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The type of the compound which can be combined is not particularly limited, and can be appropriately combined in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. Type of compound used For example, one embodiment of the present invention is one type. Or another embodiment of the present invention is two types. Furthermore, in another embodiment of this invention, they are three or more types.

The compound represented by the above formula (V-3) is preferably contained in an amount of 1% by mass or more and 16% by mass or less based on the total mass of the liquid crystal composition of the present invention, and preferably 1% by mass or more and 13% by mass or less. The mass% or more is preferably 9% by mass or less, and more preferably 3% by mass or more and 9% by mass or less.

In addition, the compound represented by the formula (V-3) is preferably at least one compound selected from the group consisting of compounds represented by the formula (25.1) to the formula (25.3).

In addition, the compound represented by the above formula (V) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (V-4).

In the above formula (V-4), R ⁵¹ and R ⁵² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound represented by the above formula (V-4) is preferably contained in an amount of 1% by mass or more and 15% by mass or less based on the total mass of the liquid crystal composition of the present invention, and is preferably 2% by mass or more and 15% by mass or less. The mass% or more is preferably 10% by mass or less, and more preferably 4% by mass or more and 8% by mass or less.

In addition, the compound represented by the formula (V-4) is preferably at least one compound selected from the group consisting of the compounds represented by the formula (25.11) to the formula (25.13), and the compound represented by the formula (25.13). It is better.

In addition, the compound represented by the above formula (L) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (V'-5).

In the above formula (V'-5), R ⁵¹ and R ⁵² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound represented by the above formula (V'-5) is preferably contained in an amount of 1% by mass or more and 15% by mass or less, and preferably 2% by mass or more and 15% by mass or less, based on the total mass of the liquid crystal composition of the present invention. It is preferably 2% by mass or more and 10% by mass or less, and more preferably 5% by mass or more and 10% by mass or less.

Further, the compound represented by the formula (V'-5) is preferably at least one compound selected from the group consisting of compounds represented by the formula (25.21) to the formula (25.24), and is represented by the formula (25.21) and/or The compound represented by the formula (25.23) is preferred.

The liquid crystal composition of the present invention may further contain at least one compound represented by the formula (VI).

In the above formula (VI), R ⁶¹ and R ⁶² each independently represent a linear alkyl group having 1 to 10 carbon atoms, a linear alkoxy group having 1 to 10 carbon atoms or a linear chain having 2 to 10 carbon atoms. Alkenyl.

The type of the compound which can be combined is not particularly limited, and it is preferable to blend one or three of these compounds in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. It is preferable to contain 1 to 4 kinds, and it is particularly preferable to contain 1 to 5 or more.

The content of the compound represented by the above formula (VI) is preferably from 0 to 35% by mass, preferably from 0 to 25% by mass, preferably from 0 to 15% by mass, based on the total mass of the liquid crystal composition of the present invention.

Specific examples of the compound represented by the above formula (VI) include the compounds listed below.

The liquid crystal composition of the invention of the present invention may further contain at least one compound represented by the formula (VII).

In the above formula (VII), R ⁷¹ and R ⁷² each independently represent a linear alkyl group having 1 to 10 carbon atoms, a linear alkoxy group having 1 to 10 carbon atoms or a linear chain having 4 to 10 carbon atoms. Alkenyl.

The type of the compound which can be combined is not particularly limited, and one or three kinds of appropriately selected ones can be blended from these compounds in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. Preferably, 1 to 4 kinds of blends are more preferable, and 1 to 5 or more types are particularly preferable.

The content of the compound represented by the above formula (VII) is preferably from 0 to 35% by mass, preferably from 0 to 25% by mass, preferably from 0 to 15% by mass, based on the total mass of the liquid crystal composition of the present invention.

Specific examples of the compound represented by the above formula (VII) include the compounds listed below.

The liquid crystal composition of the present invention may further contain at least one compound represented by the following formula (M).

In the above formula (M), R ^M1 represents an alkyl group having 1 to 8 carbon atoms, and one of the alkyl groups or two or more of -CH ₂ - which are not adjacent to each other may be independently -CH=CH- , -C≡C-, -O-, -CO-, -COO- or -OCO-substitution, PM represents 0, 1, 2, 3 or 4, and C ^M1 and C ^M2 each independently represent a group consisting of group selected from the group: (d) 1,4- cyclohexylene (which is present in a group -CH ₂ - or not adjacent two or more of -CH ₂ - may be substituted with -O- or -S-) and (e) 1,4-phenylene (one -CH= or two or more adjacent -CH= which may be present in the group may also be substituted with -N=)

The above group (d) and the group (e) may each independently be substituted with a cyano group, a fluorine atom or a chlorine atom, and K ^M1 and K ^M2 each independently represent a single bond, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -OCF ₂ -, -CF ₂ O-, -COO-, -OCO- or -C≡C-, PM is 2, 3 or 4 and K ^{M1 is} present in plural In the case of the same, they may be the same or different; if the PM is 2, 3 or 4 and the C ^M2 complex is present, they may be the same or different; X ^M1 and X ^M3 each independently represent a hydrogen atom, chlorine An atom or a fluorine atom, X ^M2 represents a hydrogen atom, a fluorine atom, a chlorine atom, a cyano group, a trifluoromethyl group, a fluoromethyloxy group, a difluoromethyloxy group, a trifluoromethoxy group or a 2,2, 2-Trifluoroethyl. However, the compound represented by the above formula (i) is excluded.

The kind of the compound which can be combined is not particularly limited, and can be appropriately combined and used in accordance with desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one embodiment of the present invention. Or another embodiment of the present invention is two types. Furthermore, in another embodiment of the present invention, there are three types. Further, in another embodiment of the present invention, there are four types. Furthermore, in another embodiment of the present invention, there are five types. Furthermore, in another embodiment of the present invention, there are six types. Furthermore, in another embodiment of the present invention, More than one species.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (M) must be in accordance with low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, drip marks, afterimage, dielectric The performance required for coefficient anisotropy and the like is appropriately adjusted.

The content of the compound represented by the above formula (M) is from 1 to 70% by mass based on the total mass of the liquid crystal composition of the present invention. Further, for example, in another embodiment of the present invention, the content of the compound is from 1 to 65% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 60% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 55% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 54% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 51% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 47% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 42% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 39% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 37% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 35% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 33% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 32% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 31% by mass. For example, still another embodiment of the present invention is the aforementioned The content of the compound is from 1 to 30% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 29% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 25% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 24% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 20% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 19% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 10% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 9% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 8% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 3 to 54% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 9 to 54% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 19 to 54% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 20 to 54% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 22 to 54% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 26 to 54% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 28 to 54% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 29 to 54% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 30 to 54% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 31 to 54% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 32 to 54% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 33 to 54% by mass. For example, the present invention In still another embodiment, the content of the compound is from 39 to 54% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 42 to 54% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 46 to 54% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 48 to 54% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 52 to 54% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 3 to 8% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 9 to 10% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 19 to 25% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 22 to 24% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 26 to 29% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 28 to 35% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 28 to 33% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 31 to 32% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 32 to 33% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 33 to 42% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 39 to 42% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 42 to 47% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 48 to 51% by mass.

When it is necessary to lower the liquid crystal composition which maintains the viscosity and the response speed of the liquid crystal composition of the present invention, it is preferable to slightly lower the above lower limit value and slightly lower the upper limit value. Furthermore, improving the maintenance of the present invention In the case where the liquid crystal composition of Tni and the liquid crystal composition having good temperature stability is necessary, it is preferable to slightly lower the above lower limit value and slightly lower the upper limit value. Further, in order to reduce the dielectric constant anisotropy in order to lower the holding driving voltage, it is preferable to slightly increase the above-described lower limit value and slightly increase the upper limit value.

In the case where the ring structure of R ^M1 is a phenyl group (aromatic), a linear alkyl group having 1 to 5 carbon atoms, a linear alkoxy group having 1 to 4 carbon atoms, and carbon are used. The alkenyl group having 4 to 5 atoms is preferred, and the ring structure of the combination is cyclohexane, pyran and In the case of a saturated ring structure such as an alkane, a linear alkyl group having 1 to 5 carbon atoms, a linear alkoxy group having 1 to 4 carbon atoms, and a linear carbon number of 2 to 5 are used. The alkenyl group is preferred.

In the case where the compound represented by the formula (M) is required to have chemical stability of the liquid crystal composition, it is preferred that the compound does not have a chlorine atom in the molecule. Further, the content of the compound having a chlorine atom in the liquid crystal composition is preferably 0 to 5% by mass, preferably 0 to 3% by mass, and preferably 0 to 1% by mass based on the total mass of the liquid crystal composition of the present invention. 0 to 0.5% by mass is preferred, and substantially no content is preferred. The fact that it does not substantially contain a system means that a compound containing only an undesired chlorine atom, such as a compound produced as an impurity at the time of production of a compound, is mixed into the liquid crystal composition.

The compound represented by the formula (M) is preferably at least one compound selected from the group consisting of compounds represented by the formula (VIII).

In the above formula (VIII), R ⁸ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and X ⁸¹ to X ⁸⁵ are each independently represented. A hydrogen atom or a fluorine atom, and Y ⁸ represents a fluorine atom or -OCF ₃ . However, the compound represented by the above formula (i) is excluded.

The kind of the compound which can be combined is not particularly limited, and can be appropriately combined and used in accordance with desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one embodiment of the present invention. Or another embodiment of the present invention is two types. Furthermore, in another embodiment of this invention, they are three or more types.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (VIII) must be in accordance with low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, drip marks, afterimage, dielectric The performance required for coefficient anisotropy and the like is appropriately adjusted.

The content of the compound represented by the above formula (VIII) is, for example, 1 to 25% by mass in one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Further, for example, in another embodiment of the present invention, the content of the compound is from 1 to 20% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 15% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 10% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 7 mass%. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 6% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 5% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 4% by mass. example According to still another embodiment of the present invention, the content of the compound is from 3 to 7% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 3 to 6% by mass. For example, in still another embodiment of the present invention, the content of the compound is 4 to 7% by mass.

When it is necessary to lower the liquid crystal composition which maintains the viscosity and the response speed of the liquid crystal composition of the present invention, it is preferable to slightly lower the above lower limit value and slightly lower the upper limit value. In addition, it is necessary to increase the Tni of the liquid crystal composition of the present invention and the liquid crystal composition having good temperature stability, and it is preferable to slightly lower the above lower limit value and slightly lower the upper limit value. Further, in order to reduce the dielectric constant anisotropy in order to lower the holding driving voltage, it is preferable to slightly increase the above-described lower limit value and slightly increase the upper limit value.

Further, the compound represented by the formula (VIII) is preferably a compound represented by the formula (VIII-1).

In the above formula (VIII-1), R ⁸ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms. However, the compound represented by the above formula (i) is excluded.

The kind of the compound which can be combined is not particularly limited, and can be appropriately combined and used in accordance with desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one embodiment of the present invention. Or the invention In another embodiment, it is two or more types.

Further, the compound represented by the above formula (VIII-1) is specifically at least one compound selected from the group consisting of compounds represented by formula (26.1), formula (26.3), and formula (26.4). Preferably, the compound represented by the formula (26.1) is preferred.

The content of the compound represented by the above formula (26.1) is 1% by mass or more and 20% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. % or less is preferably 1% by mass or more and 15% by mass or less, more preferably 1% by mass or more and 10% by mass or less, and more preferably 1% by mass or more and 7% by mass or less. In particular, for example, 1% by mass or more and 6% by mass or less, 1% by mass or more and 5% by mass or less, 3% by mass or more and 7% by mass or less, 3% by mass or more and 6% by mass or less, and 4% by mass or more and 7 mass%. % below is better.

Alternatively, the compound represented by the above formula (VIII) is preferably a compound represented by the formula (VIII-2).

In the above formula (VIII-2), R ⁸ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The kind of the compound which can be combined is not particularly limited, and can be appropriately combined and used in accordance with desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one embodiment of the present invention. Or another embodiment of the present invention is two types. Alternatively, still another embodiment of the present invention is three or more.

The content of the compound represented by the above formula (VIII-2) is 2.5% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. The above 25% by mass or less is preferable, and 8% by mass or more and 25% by mass or less is preferable, and 10% by mass or more and 20% by mass or less is preferable, and 12% by mass or more and 15% by mass or less is preferable.

In addition, the compound represented by the formula (VIII-2) is preferably at least one compound selected from the group consisting of the compounds represented by the formula (27.1) to the formula (27.4), and the compound represented by the formula (27.2). It is better.

Alternatively, the compound represented by the above formula (VIII) is preferably a compound represented by the formula (VIII-3).

In the above formula (VIII-3), R ⁸ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The kind of the compound which can be combined is not particularly limited, and can be appropriately combined and used in accordance with desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one embodiment of the present invention. Or the invention In another embodiment, it is two or more types.

The content of the compound represented by the above formula (VIII-3) is 0.5% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. The above 15% by mass or less is preferable, and 0.5% by mass or more and 10% by mass or less is more preferable, and 0.5% by mass or more and 5% by mass or less is preferable, and preferably 1% by mass or more and 5% by mass or less.

In addition, the compound represented by the above formula (VIII-3) is specifically at least one compound selected from the group consisting of compounds represented by formula (26.11) to formula (26.14), and is preferably represented by formula (26.11). The compound represented by the formula (26.12) is preferred, and the compound represented by the formula (26.12) is preferred.

Or / /, the compound represented by the above formula (VIII) The compound represented by the formula (VIII-4) is preferred.

In the above formula (VIII-4), R ⁸ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound to be combined is not particularly limited, and one or a combination of two or more is preferable in view of low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (VIII-4) can be appropriately adjusted in consideration of characteristics such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

For example, the content of the compound represented by the above formula (VIII-4) is 1 to 25% by mass in one embodiment of the present invention, and is 2 in another embodiment. In another embodiment, the content of the compound is 3 to 20% by mass, and in another embodiment, the content of the compound is 3 to 13% by mass, and in still another embodiment, the content of the compound is 3 In still another embodiment, the content of the compound is from 1 to 5% by mass.

Further, the compound represented by the formula (VIII-4) used in the liquid crystal composition of the present invention is specifically at least 1 selected from the group consisting of compounds represented by the formula (26.21) to the formula (26.24). A compound is preferred, and among them, a compound represented by the formula (26.24) is preferred.

In addition, the compound represented by the above formula (M) is preferably at least one compound selected from the group consisting of compounds represented by the formula (IX).

In the above formula (IX), R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and X ⁹¹ and X ⁹² are each independently represented. A hydrogen atom or a fluorine atom, Y ⁹ represents a fluorine atom, a chlorine atom or -OCF ₃ , and U ⁹ represents a single bond, -COO- or -CF ₂ O-.

The kind of the compound which can be combined is not particularly limited, and can be appropriately combined and used in accordance with desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one embodiment of the present invention. Or another embodiment of the present invention is two types. Furthermore, in another embodiment of the present invention, there are three types. Further, in another embodiment of the present invention, there are four types. Furthermore, in another embodiment of the present invention, there are five types. Furthermore, in another embodiment of the present invention, it is six or more.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (IX) must be in accordance with low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, drip marks, afterimage, dielectric The performance required for coefficient anisotropy and the like is appropriately adjusted.

The content of the compound represented by the above formula (IX) is, for example, 1 to 50% by mass in one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Further, for example, in another embodiment of the present invention, the content of the compound is from 1 to 45% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 42% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 41% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 28% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 23% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 20% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 18% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 17% by mass. For example, still another embodiment of the present invention is the aforementioned combination The content of the substance is from 1 to 16% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 15% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 12% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 11% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 9% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 8% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 7 mass%. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 6% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 5% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 3 to 42% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 5 to 42% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 6 to 42% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 7 to 42% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 8 to 42% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 9 to 42% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 12 to 42% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 14 to 42% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 15 to 42% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 16 to 42% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 17 to 42% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 18 to 42% by mass. E.g According to still another embodiment of the present invention, the content of the compound is from 23 to 42% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 37 to 42% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 3 to 8% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 8 to 12% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 8 to 11% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 9 to 17% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 9 to 12% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 14 to 18% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 17 to 20% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 18 to 28% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 37 to 41% by mass.

When it is necessary to lower the liquid crystal composition which maintains the viscosity and the response speed of the liquid crystal composition of the present invention, it is preferable to slightly lower the above lower limit value and slightly lower the upper limit value. In addition, in the case where it is necessary to increase the Tni of the liquid crystal composition of the present invention and the liquid crystal composition which is less likely to cause image sticking, it is preferable to slightly lower the above lower limit value and slightly lower the upper limit value. Further, in order to reduce the dielectric constant anisotropy in order to lower the holding driving voltage, it is preferable to slightly increase the above-described lower limit value and slightly increase the upper limit value.

Further, the compound represented by the above formula (IX) is preferably a compound represented by the formula (IX-1).

In the above formula (IX-1), R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and X ⁹² represents a hydrogen atom or A fluorine atom, Y ⁹ represents a fluorine atom or -OCF ₃ .

The kind of the compound which can be combined is not particularly limited, and can be appropriately combined and used in accordance with desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one embodiment of the present invention. Or another embodiment of the present invention is two types. Furthermore, in another embodiment of the present invention, there are three types. Further, in another embodiment of the present invention, it is four or more.

In addition, the compound represented by the above formula (IX-1) is preferably a compound represented by the formula (IX-1-1).

In the above formula (IX-1-1), R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The kind of the compound which can be combined is not particularly limited, and can be appropriately combined and used in accordance with desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one embodiment of the present invention. Or another embodiment of the present invention is two types. Furthermore, in another embodiment of the present invention There are three or more types.

The content of the compound represented by the above formula (IX-1-1) can be appropriately adjusted according to the embodiment in consideration of low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (IX-1-1) is, for example, 1 to 35 mass% as an embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Further, for example, in another embodiment of the present invention, the content of the compound is from 1 to 30% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 25% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 20% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 19% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 17% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 16% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 15% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 12% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 10% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 8% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 7 mass%. For example, in still another embodiment of the present invention, the content of the compound is from 1 to 5% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 2 to 20% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 3 to 20% by mass. For example, in still another embodiment of the present invention, the content of the compound is 5 to 20 the amount%. For example, in still another embodiment of the present invention, the content of the compound is from 8 to 20% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 9 to 20% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 12 to 20% by mass. For example, in still another embodiment of the present invention, the content of the compound is 15 to 20% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 17 to 20% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 18 to 20% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 3 to 8% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 5 to 10% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 8 to 11% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 9 to 17% by mass. For example, in still another embodiment of the present invention, the content of the compound is 15 to 17% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 15 to 16% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 17 to 20% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 18 to 19% by mass.

Further, the compound represented by the above formula (IX-1-1) is preferably at least one compound selected from the group consisting of compounds represented by formulas (28.1) to (28.5), and is represented by formula (28.3) and / or a compound represented by the formula (28.5) is preferred.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (28.3) is preferably 1% by mass or more and 30% by mass or less, and preferably 1% by mass or more and 25% by mass or less based on the total amount of the liquid crystal composition of the present invention. Preferably, it is preferably 1% by mass or more and 20% by mass or less. Among these, 1% by mass or more and 18% by mass or less, 1% by mass or more and 16% by mass or less, 1% by mass or more and 12% by mass or less, 1% by mass or more and 11% by mass or less, and 1% by mass or more and 10% by mass or less. 1% by mass or more and 8% by mass or less, 1% by mass or more and 4% by mass or less, 3% by mass or more and 18% by mass or less, 5% by mass or more and 18% by mass or less, 75% by mass or more and 18% by mass or less, and 85% by mass or more and 18% by mass 5% by mass or less, 11% by mass or more and 18% by mass or less, 3% by mass or more and 8% by mass or less, 5% by mass or more and 11% by mass or less, 5% by mass or more and 8% by mass or less, 8% by mass or more and 12% by mass or less, and 8 or less More than 10% by mass The amount is preferably 1% or less, preferably 11% by mass or more and 16% by mass or less.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (28.5) is 1 mass in comparison with the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. The amount is preferably 30% by mass or more, more preferably 1% by mass or more and 25% by mass or less, and more preferably 1% by mass or more and 20% by mass or less. Among these, 2% by mass or more and 20% by mass or less, 6% by mass or more and 20% by mass or less, 13% by mass or more and 20% by mass or less, 17% by mass or more and 2% by mass or less, and 13% by mass or more and 17% by mass or less. good.

In the case where the compound represented by the above formula (ii) is contained in the liquid crystal composition of the present invention, and the compound represented by the above formula (28.5) is further contained, the compound represented by the above formula (i), The total content of the compound represented by the above formula (ii) and the compound represented by the above formula (28.5) is preferably 10 to 50% by mass, and 20 to 45% by mass based on the total mass of the liquid crystal composition of the present invention. Preferably, 30 to 45% by mass is more preferable, and 35 to 40% by mass is particularly preferable.

In the case where the liquid crystal composition of the present invention contains at least two compounds represented by the above formula (ii) and further contains the compound represented by the above formula (28.5), the compound represented by the above formula (i) and the aforementioned The total content of the compound represented by the formula (ii) and the compound represented by the above formula (28.5) is preferably from 10 to 55% by mass based on the total mass of the liquid crystal composition of the present invention, and in one embodiment, it is 20 It is preferably 25% by mass, and in another embodiment, it is preferably 35 to 40% by mass, and in another embodiment, it is preferably 45 to 55% by mass.

Or / /, the compound represented by the above formula (IX-1) The compound represented by the formula (IX-1-2) is preferred.

In the above formula (IX-1-2), R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The type of the compound which can be combined is not limited, and it is preferable to combine one to three kinds in view of solubility at low temperature, transfer temperature, electrical reliability, and birefringence, and it is preferred to combine one to four kinds.

The content of the compound represented by the above formula (IX-1-2) is 1% by mass or more based on the total mass of the liquid crystal composition of the present invention in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. The mass% or less is preferably 5% by mass or more and 30% by mass or less, preferably 8 8% by mass or more and 30% by mass or less, more preferably 10% by mass or more and 25% by mass or less, and most preferably 14% by mass or more and 22% by mass or less. 16% by mass or more and 20% by mass or less are preferred.

Further, the compound represented by the above formula (IX-1-2) is preferably at least one compound selected from the group consisting of compounds represented by formula (29.1) to formula (29.4), and is represented by formula (29.2). And/or a compound represented by the formula (29.4) is preferred.

Alternatively, the compound represented by the above formula (IX) is preferably a compound represented by the formula (IX-2).

In the above formula (IX-2), R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and each of X ⁹¹ and X ⁹² Independently represents a hydrogen atom or a fluorine atom, and Y ⁹ represents a fluorine atom, a chlorine atom or -OCF ₃ .

The type of the compound which can be combined is not limited, and in view of low-temperature solubility, transfer temperature, electrical reliability, birefringence, and the like, it can be appropriately used in combination according to the embodiment. For example, in one embodiment of the present invention, one type is used, and in another embodiment, two types are used, and in still another embodiment, three types are used, and in still another embodiment, four types are used. In the embodiment, there are five types, and in still another embodiment, six or more types are combined.

Further, the compound represented by the formula (IX-2) is preferably a compound represented by the formula (IX-2-1).

In the above formula (IX-2-1), R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The type of the compound which can be combined is not limited, and it is preferable to combine 1-3 types in consideration of low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the formula (IX-2-1) can be appropriately adjusted in consideration of properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

For example, in one embodiment of the present invention, the content of the compound represented by the above formula (IX-2-1) is from 1 to 25% by mass based on the total mass of the liquid crystal composition of the present invention. In another embodiment, the content of the compound is from 1 to 20% by mass. In still another embodiment, the content of the compound is from 1 to 15% by mass. In still another embodiment, the content of the compound is from 1 to 10% by mass. In still another embodiment, the content of the compound is from 1 to 5% by mass. In still another embodiment, the content of the compound is from 1 to 4% by mass.

Further, the compound represented by the formula (IX-2-1) is at least one selected from the group consisting of compounds represented by the formula (30.1) to the formula (30.4). The compound is preferably a compound represented by the formula (30.1) and/or the formula (30.2).

Alternatively, the compound represented by the above formula (IX-2) is preferably a compound represented by the formula (IX-2-2).

In the above formula (IX-2-2), R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The type of the compound which can be combined is not limited, and in view of low-temperature solubility, transfer temperature, electrical reliability, and birefringence, it is preferred to combine 1 to 3 kinds, and it is preferred to combine 1 to 4 kinds.

The content of the compound represented by the above formula (IX-2-2) can be appropriately adjusted according to the embodiment in consideration of properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

For example, the content of the compound represented by the above formula (IX-2-2) is in the form of one of the present invention with respect to the total mass of the liquid crystal composition of the present invention. In the state of 1 to 30% by mass, in another embodiment, 1 to 25% by mass, and in another embodiment, 1 to 20% by mass, and in another embodiment, 1 to 17% by mass, and yet another In the embodiment, it is 1 to 16% by mass, and in another embodiment, it is 1 to 12% by mass, and in still another embodiment, it is 1 to 11% by mass, and in still another embodiment, it is 1 to 10% by mass. In still another embodiment, it is 1 to 9% by mass, and in still another embodiment, 2 to 17% by mass, and in still another embodiment, 6 to 17% by mass, and in still another embodiment. 8 to 17% by mass, and in another embodiment, 9 to 17% by mass, and in still another embodiment, 14 to 17% by mass, and in still another embodiment, 14 to 16% by mass, In still another embodiment, it is 2 to 9% by mass, and in still another embodiment, it is 6 to 10% by mass, and in still another embodiment, it is 8 to 11% by mass, and in still another embodiment, 9 ~12% by mass.

Further, the compound represented by the formula (IX-2-2) is preferably at least one compound selected from the group consisting of the compounds represented by the formula (31.1) to the formula (31.4), and the formula (31.2) to the formula (31.2) 31.4) It is preferred that at least one compound selected from the group consisting of the compounds is represented by the formula (31.2).

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (31.2) is preferably 1% by mass or more and 30% by mass or less, and 1% by mass or less by 25% by mass or less based on the total mass of the liquid crystal composition of the present invention. Preferably, it is preferably 1% by mass or more and 20% by mass or less. Among these, for example, 2% by mass or more and 20% by mass or less, 5% by mass or more and 20% by mass or less, 11% by mass or more and 20% by mass or less, 14% by mass or more and 20% by mass or less, and 14% by mass or more and 16% by mass or less. The following is better.

In the case where the compound represented by the above formula (ii) is contained in the liquid crystal composition of the present invention, and the compound represented by the above formula (31.2) is further contained, the compound represented by the above formula (i), The total content of the compound represented by the above formula (ii) and the compound represented by the above formula (31.2) is preferably 10 to 40% by mass, and 15 to 35% by mass based on the total mass of the liquid crystal composition of the present invention. Preferably, 20 to 35 mass% is more preferable, and 30 to 35 mass% is particularly preferable.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (31.4) is preferably 1% by mass or more and 20% by mass or less, and 1% by mass or 15% by mass based on the total mass of the liquid crystal composition of the present invention. The content is preferably 1% by mass or more and 10% by mass or less, and preferably 1% by mass or more and 5% by mass or less.

In the case where the compound represented by the above formula (ii) is contained in the liquid crystal composition of the present invention, and the compound represented by the above formula (31.4) is further contained, the compound represented by the above formula (i), The total content of the compound represented by the above formula (ii) and the compound represented by the above formula (31.4) is preferably 5 to 40% by mass, and 5 to 30% by mass based on the total mass of the liquid crystal composition of the present invention. Preferably, 5 to 20% by mass is more preferable, and 10 to 15% by mass is particularly preferable.

Alternatively, the compound represented by the above formula (IX-2) is preferably a compound represented by the formula (IX-2-3).

In the above formula (IX-2-3), R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The type of the compound which can be combined is not limited, and it is preferable to combine 1-2 types in consideration of low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (IX-2-3) is 1% by mass or more based on the total mass of the liquid crystal composition of the present invention in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. The mass% or less is preferably 3% by mass or more and 20% by mass or less, more preferably 6% by mass or more and 15% by mass or less, and more preferably 8% by mass or more and 10% by mass or less.

Further, the compound represented by the formula (IX-2-3) is preferably at least one compound selected from the group consisting of compounds represented by the formula (32.1) to the formula (32.4), and is represented by the formula (32.2) and/or Or a compound represented by the formula (32.4) is preferred.

Alternatively, the compound represented by the above formula (IX-2) is preferably a compound represented by the formula (IX-2-4).

In the above formula (IX-2-4), R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The content of the compound represented by the above formula (IX-2-4) is 1% by mass or more based on the total mass of the liquid crystal composition of the present invention in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. The mass% or less is preferably 1% by mass or more and 20% by mass or less, preferably 1% by mass or more and 15% by mass or less, more preferably 1% by mass or more and 12% by mass or less, and 5 or less. The mass% or more is preferably 12% by mass or less, and preferably 7 mass% or more and 12 mass% or less.

Further, the compound represented by the formula (IX-2-4) is preferably at least one compound selected from the group consisting of the compounds represented by the formula (33.1) to the formula (33.6), and is represented by the formula (33.1) and/or Or a compound represented by the formula (33.3) is preferred.

The content of the compound represented by the above formula (33.3) is considered in view of low-temperature solubility, transfer temperature, electrical reliability, birefringence, and the like. The characteristics can be appropriately adjusted according to the embodiment, and the total mass of the liquid crystal composition of the present invention is preferably 1 to 20% by mass, preferably 1 to 15% by mass, more preferably 1 to 10% by mass, and 4 to 4% by mass. 7% by mass is preferred.

In the case where the compound represented by the above formula (ii) is contained in the liquid crystal composition of the present invention, and the compound represented by the above formula (33.3) is further contained, the compound represented by the above formula (i), The total content of the compound represented by the above formula (ii) and the compound represented by the above formula (33.3) is preferably 5 to 50% by mass, and 20 to 50% by mass based on the total mass of the liquid crystal composition of the present invention. Preferably, 30 to 50% by mass is more preferable, and 40 to 45% by mass is particularly preferable.

Alternatively, the compound represented by the above formula (IX-2) is preferably a compound represented by the formula (IX-2-5).

In the above formula (IX-2-5), R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The type of the compound which can be combined is not limited, and in view of low-temperature solubility, transfer temperature, electrical reliability, birefringence, and the like, it can be appropriately used in combination according to the embodiment. For example, in one embodiment of the present invention, one type is used, the other embodiment is two types, and in still another embodiment, three types are used, and in still another embodiment, four or more types are used.

The content of the compound represented by the above formula (IX-2-5) is considered to be low temperature solubility, transfer temperature, electrical reliability, and birefringence. The characteristics such as the rate can be appropriately adjusted in accordance with the embodiment.

For example, the content of the compound represented by the above formula (IX-2-5) is from 1 to 40% by mass in one embodiment of the present invention with respect to the total mass of the liquid crystal composition of the present invention, and in another embodiment It is 1 to 35% by mass, and in another embodiment, it is 5 to 35% by mass, and in still another embodiment, it is 8 to 35% by mass, and in still another embodiment, it is 12 to 35% by mass. In another embodiment, it is 30 to 35 mass%, and in still another embodiment, it is 8 to 12 mass%.

When it is necessary to lower the liquid crystal composition which maintains the viscosity and the response speed of the liquid crystal composition of the present invention, it is preferable to slightly lower the above lower limit value and slightly lower the upper limit value. In addition, in the case where it is necessary to increase the Tni of the liquid crystal composition of the present invention and the liquid crystal composition which is less likely to cause image sticking, it is preferable to slightly lower the above lower limit value and slightly lower the upper limit value. Further, in order to reduce the dielectric constant anisotropy in order to lower the holding driving voltage, it is preferable to slightly increase the above-described lower limit value and slightly increase the upper limit value.

Further, the compound represented by the formula (IX-2-5) is preferably at least one compound selected from the group consisting of compounds represented by the formula (34.1) to the formula (34.7), and is represented by the formula (34.1). (34.2) The compound represented by the formula (34.3) and/or the formula (34.5) is preferably a compound represented by the formula (34.1) and/or the formula (34.5).

The content of the compound represented by the above formula (34.1) is considered in view of low-temperature solubility, transfer temperature, electrical reliability, birefringence, and the like. The characteristics can be appropriately adjusted according to the embodiment.

For example, the content of the compound represented by the above formula (34.1) is 0.5% by mass or more and 20% by mass or less based on the total mass of the liquid crystal composition of the present invention, and 0.5 in another embodiment. In another embodiment, it is 0.5% by mass or more and 10% by mass or less, and in still another embodiment, it is 5% by mass or more and 10% by mass or less, and in still another embodiment, it is 8 or less. The mass% is more than 10% by mass.

The content of the compound represented by the above formula (34.5) can be appropriately adjusted according to the embodiment in consideration of characteristics such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

For example, the content of the compound represented by the above formula (34.5) is 0.5% by mass or more and 20% by mass or less based on the total mass of the liquid crystal composition of the present invention, and 0.5 in another embodiment. In another embodiment, it is 0.5% by mass or more and 10% by mass or less, and in another embodiment, it is 0.5% by mass or more and less than 10% by mass, and in still another embodiment, it is 5% by mass or less. The mass% is more than 10% by mass.

In the case where the liquid crystal composition of the present invention contains at least two compounds represented by the above formula (ii) and further contains at least two compounds represented by the above formula (IX-2-5), the above formula The total content of the compound represented by the formula (i), the compound represented by the above formula (ii), and the compound represented by the above formula (IX-2-5) is based on the total mass of the liquid crystal composition of the present invention. 10 to 45 mass% is preferred, 20 to 45 mass% is preferred, 30 to 45 mass% is more preferred, and 37 to 43 mass% is particularly preferred.

The compound represented by the above formula (34.1) and the compound represented by the above formula (34.5) are preferably at least two compounds represented by the above formula (IX-2-5).

Alternatively, the compound represented by the above formula (IX) is preferably a compound represented by the formula (IX-3).

In the above formula (IX-3), R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and each of X ⁹¹ and X ⁹² Independently represents a hydrogen atom or a fluorine atom, and Y ⁹ represents a fluorine atom, a chlorine atom or -OCF ₃ .

Further, the compound represented by the formula (IX-3) is preferably a compound represented by the formula (IX-3-1).

In the above formula (IX-3-1), R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The type of the compound which can be combined is not limited, and it is preferable to combine 1-2 types in consideration of low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (IX-3-1), In view of the low temperature solubility, the transfer temperature, the electrical reliability, and the like, the total mass of the liquid crystal composition of the present invention is preferably 3% by mass or more and 30% by mass or less, and preferably 7 mass% or more and 30% by mass or less. 13% by mass or more and 20% by mass or less are preferable, and 15% by mass or more and 18% by mass or less are preferable.

Further, the compound represented by the formula (IX-3-1) is preferably at least one compound selected from the group consisting of the compounds represented by the formula (35.1) to the formula (35.4), and is represented by the formula (35.1) and/or Or a compound represented by the formula (35.2) is preferred.

Alternatively, the compound represented by the above formula (M) is preferably a compound represented by the formula (X).

In the above formula (X), X ¹⁰¹ to X ¹⁰⁴ each independently represent a fluorine atom or a hydrogen atom, Y ¹⁰ represents a fluorine atom, a chlorine atom, or -OCF ₃ , and Q ¹⁰ represents a single bond or -CF ₂ O-, R ¹⁰ An alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and A ¹⁰¹ and A ¹⁰² each independently represent 1,4-cyclohexylene and 1, 4-phenyl group or any of the groups represented by the following formula, the hydrogen atom on the 1,4-phenylene group may be substituted by a fluorine atom.

The compound which can be combined is not particularly limited, and may be appropriately combined in consideration of solubility at low temperature, transfer temperature, electrical reliability, birefringence, and the like. For example, in one embodiment of the present invention, it is one type. Further, in another embodiment of the present invention, there are two types. In still another embodiment, there are three types. In still another embodiment, there are four types. In still another embodiment, there are five or more types.

The content of the compound represented by the above formula (X) can be appropriately adjusted according to the embodiment in consideration of properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence. For example, the content of the compound represented by the above formula (X) is from 1 to 35 mass% in one embodiment of the present invention, and from 1 to 30 in another embodiment, based on the total mass of the liquid crystal composition of the present invention. % by mass, and in another embodiment, 1 to 25% by mass In still another embodiment, it is 1 to 24% by mass, and in still another embodiment, it is 1 to 20% by mass, and in still another embodiment, 1 to 19% by mass, and in still another embodiment. It is 1 to 16% by mass, and in another embodiment, it is 1 to 12% by mass, and in still another embodiment, it is 1 to 11% by mass, and in still another embodiment, it is 1 to 10% by mass. In still another embodiment, the content is 1 to 9% by mass, and in still another embodiment, the content is 1 to 8% by mass, and in still another embodiment, the content is 1 to 7% by mass, and yet another In one embodiment, the content is 1 to 3% by mass, and in still another embodiment, the content is 3 to 24% by mass, and in still another embodiment, the content is 5 to 24% by mass. The content in the form is 6 to 24% by mass, and in still another embodiment, the content is 8 to 24% by mass, and in still another embodiment, the content is 11 to 24% by mass, and in still another embodiment The content is 13 to 24% by mass, and in still another embodiment, the content is 15 to 24% by mass, and in still another embodiment, the content is 17 to 24% by mass, and in still another embodiment, the content is 3 to 7 mass%, In still another embodiment, the content is 5 to 10% by mass, and in still another embodiment, the content is 6 to 9% by mass, and in still another embodiment, the content is 6 to 8% by mass, and yet another In one embodiment, the content is 8 to 11% by mass, and in still another embodiment, the content is 11 to 19% by mass, and in still another embodiment, the content is 11 to 12% by mass, and yet another embodiment is carried out. The content in the form is 13 to 16% by mass, and in still another embodiment, the content is 15 to 19% by mass, and in still another embodiment, the content is 17 to 20% by mass.

In the case where it is necessary to reduce the liquid crystal composition having a high viscosity and a fast response speed of the liquid crystal composition of the present invention, it is preferable to slightly lower the above lower limit value and slightly lower the upper limit value. Furthermore, it is not easy to produce In the case where the liquid crystal composition of the shadow is necessary, it is preferable to slightly lower the above lower limit value and slightly lower the upper limit value. Further, in order to reduce the dielectric constant anisotropy in order to lower the holding driving voltage, it is preferable to slightly increase the above-described lower limit value and slightly increase the upper limit value.

The compound represented by the above formula (X) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (X-1).

In the above formula (X-1), X ¹⁰¹ to X ¹⁰³ each independently represent a fluorine atom or a hydrogen atom, and R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or a carbon number. 1 to 4 alkoxy groups.

The compound which can be combined is not particularly limited, and may be appropriately combined in accordance with the embodiment in consideration of low-temperature solubility, transfer temperature, electrical reliability, and birefringence. For example, in one embodiment of the present invention, it is one type. Further, in another embodiment of the present invention, there are two types. In still another embodiment, there are three types. In still another embodiment, there are four types. In still another embodiment, there are five or more types.

The content of the compound represented by the above formula (X-1) can be appropriately adjusted in consideration of properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

For example, the content of the compound represented by the above formula (X-1) is from 1 to 20% by mass in one embodiment of the present invention, and is 1 in another embodiment, based on the total mass of the liquid crystal composition of the present invention. ~15% by mass, yet another In the embodiment, it is 1 to 10% by mass, and in still another embodiment, it is 1 to 9% by mass, and in still another embodiment, it is 1 to 8% by mass, and in still another embodiment, it is 1 to 7% by mass. In still another embodiment, it is 1 to 6 mass%, and in still another embodiment, 1 to 3 mass%, and in still another embodiment, 3 to 9 mass%, and still another embodiment. In the other embodiment, it is 4 to 9 mass%, and in another embodiment, it is 5 to 9 mass%, and in still another embodiment, it is 6 to 9 mass%, and in still another embodiment, it is 8 to 9 mass%. In still another embodiment, it is 3 to 7 mass%, and in still another embodiment, 5 to 7 mass%, and in still another embodiment, 6 to 7 mass%.

In addition, the compound represented by the formula (X-1) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (X-1-1).

In the above formula (X-1-1), R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound which can be combined is not particularly limited, and may be appropriately combined in consideration of solubility at low temperature, transfer temperature, electrical reliability, birefringence, and the like. For example, in one embodiment of the present invention, it is one type. Further, in another embodiment of the present invention, there are two types. In still another embodiment, there are three types. In still another embodiment, it is four or more.

The content of the compound represented by the above formula (X-1-1) can be considered in terms of low-temperature solubility, transfer temperature, electrical reliability, birefringence, and the like. Make appropriate adjustments to the characteristics.

For example, the content of the compound represented by the above formula (X-1-1) is 1 to 25% by mass based on the total mass of the liquid crystal composition of the present invention, and in another embodiment, It is 1 to 20% by mass, and in another embodiment, it is 1 to 15% by mass, and in still another embodiment, it is 1 to 10% by mass, and in still another embodiment, it is 3 to 10% by mass. In another embodiment, it is 5 to 10% by mass.

Further, the compound represented by the formula (X-1-1) used in the liquid crystal composition of the present invention is specifically selected from the group of compounds represented by the formula (36.1) to the formula (36.4). At least one compound is preferred, and a compound represented by the formula (36.1) and/or the formula (36.2) is preferred.

The liquid crystal composition of the present invention contains at least two kinds of compounds represented by the above formula (ii) and further contains the above formula (36.2) In the case of the compound represented by the above formula, the total content of the compound represented by the above formula (i), the compound represented by the above formula (ii), and the compound represented by the above formula (36.2) is relative to the liquid crystal composition of the present invention. The total mass is preferably 10 to 45 mass%, preferably 10 to 25 mass%, and more preferably 12 to 18 mass%.

In addition, the compound represented by the formula (X-1) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (X-1-2).

In the above formula (X-1-2), R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The content of the compound represented by the above formula (X-1-2) can be appropriately adjusted in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like.

For example, the content of the compound represented by the above formula (X-1-2) is 1 to 20% by mass based on the total mass of the liquid crystal composition of the present invention, and in another embodiment, In another embodiment, it is 1 to 10% by mass, and in another embodiment, it is 1 to 9% by mass, and in another embodiment, it is 1 to 8% by mass. In the embodiment, it is 1 to 5% by mass, and in another embodiment, it is 1 to 3% by mass, and in another embodiment, it is 3 to 9% by mass, and in another embodiment, it is 3 to 7% by mass. In one embodiment, it is 4 to 9 mass%, and in another embodiment, 6 to 9 mass%, and in another embodiment, 6 to 7 mass%.

Further, the compound represented by the formula (X-1-2) used in the liquid crystal composition of the present invention is specifically selected from the group consisting of compounds represented by the formula (37.1) to the formula (37.4). At least one compound is preferred, and a compound represented by the formula (37.2) is preferred.

In addition, the compound represented by the above formula (X-1) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (X-1-3).

In the above formula (X-1-3), R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound which can be combined is not particularly limited, and one or two or more kinds are preferably combined in consideration of low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (X-1-3) can be appropriately adjusted in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like.

For example, the content of the compound represented by the above formula (X-1-3) is 1 to 20% by mass based on the total mass of the liquid crystal composition of the present invention, and in another embodiment, It is 1 to 15% by mass, and in another embodiment, it is 1 to 10% by mass, and in another embodiment, it is 1 to 7% by mass, and in another embodiment, it is 5 to 7% by mass.

Further, the compound represented by the formula (X-1-3) used in the liquid crystal composition of the present invention is specifically selected from the group of compounds represented by the formula (38.1) to the formula (38.4). At least one compound is preferred, and a compound represented by the formula (38.2) is preferred.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (38.2) is preferably 1% by mass or more and 20% by mass or less, and 1% by mass or less and 15% by mass or less based on the total mass of the liquid crystal composition of the present invention. Preferably, it is preferably 1% by mass or more and 10% by mass or less, more preferably 1% by mass or more and 8% by mass or less, more preferably 3% by mass or more and 5% by mass or less, and most preferably 4% by mass or more and 5% by mass or less.

In the case where the compound represented by the above formula (ii) is contained in the liquid crystal composition of the present invention, and the compound represented by the above formula (38.2) is further contained, the compound represented by the above formula (i), The total content of the compound represented by the above formula (ii) and the compound represented by the above formula (38.2) is preferably 10 to 40% by mass, and 10 to 30% by mass based on the total mass of the liquid crystal composition of the present invention. Preferably, 10 to 20% by mass is more preferable, and 15 to 20% by mass is particularly preferable.

Or / again, before use in the liquid crystal composition of the present invention The compound represented by the above formula (M) is preferably a compound represented by the formula (X'-1).

In the above formula (X'-1), R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound which can be combined is not particularly limited, and one or two or more kinds are preferably combined in consideration of low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (X'-1) can be appropriately adjusted in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like.

For example, the content of the compound represented by the above formula (X'-1) is 1 to 30% by mass based on the total mass of the liquid crystal composition of the present invention, and in another embodiment, 1 to 25% by mass, and in another embodiment, 1 to 20% by mass, and in another embodiment, 5 to 20% by mass, and in still another embodiment, 10 to 20% by mass.

Further, the compound represented by the formula (X'-1) used in the liquid crystal composition of the present invention is specifically selected from at least the group of compounds represented by the formula (38.11) to the formula (38.14). A compound is preferred, and a compound represented by the formula (38.11) and/or the formula (38.12) is preferred.

In addition, the compound represented by the above formula (X) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (X-2).

In the above formula (X-2), X ¹⁰² and X ¹⁰³ each independently represent a fluorine atom or a hydrogen atom, Y ¹⁰ represents a fluorine atom, a chlorine atom, -OCF ₃ , and R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms. An alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound to be combined is not particularly limited, and one or a combination of two or more is preferable in view of low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

In addition, the compound represented by the above formula (X-2) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (X-2-1).

In the above formula (X-2-1), R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound which can be combined is not particularly limited. In view of the low-temperature solubility, the transfer temperature, the electrical reliability, the birefringence, and the like, one type or a combination of two or more types is preferable, and three or more types are preferable.

The content of the compound represented by the above formula (X-2-1) is 1% by mass or more based on the total mass of the liquid crystal composition of the present invention in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. The mass% or less is preferably 1% by mass or more and 16% by mass or less, preferably 1% by mass or more and 12% by mass or less, and preferably 1% by mass or more and 10% by mass or less. In the above, the content of the compound represented by the above formula (X-2-1) is preferably 2 to 9% by mass, and preferably 2 to 6% by mass based on the total mass of the liquid crystal composition of the present invention. 6 to 9 mass% is preferred.

Further, the compound represented by the above formula (X-2-1) used in the liquid crystal composition of the present invention is specifically selected from the group consisting of compounds represented by formula (39.1) to formula (39.4). At least one compound is preferred, and a compound represented by the formula (39.2) is preferred.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (39.2) is preferably 1% by mass or more and 20% by mass or less, and 1% by mass or less and 16% by mass or less based on the total mass of the liquid crystal composition of the present invention. Preferably, it is preferably 1% by mass or more and 12% by mass or less, and more preferably 1% by mass or more and 9% by mass or less. Among these, the content of the compound represented by the above formula (39.2) is preferably 2 to 9% by mass, and preferably 6 to 9% by mass based on the total mass of the liquid crystal composition of the present invention.

In the case where the compound represented by the above formula (ii) is contained in the liquid crystal composition of the present invention, and the compound represented by the above formula (39.2) is further contained, the compound represented by the above formula (i), The total content of the compound represented by the above formula (ii) and the compound represented by the above formula (39.2) is preferably 5 to 40% by mass, and 27 to 35% by mass based on the total mass of the liquid crystal composition of the present invention. Preferably, 17 to 22% by mass is preferred.

The above formula contained in the liquid crystal composition of the present invention (ii) In the case of the compound represented by the above formula (38.2) and the compound represented by the above formula (39.2), the compound represented by the above formula (i), the above formula ( Ii) The total content of the compound represented by the compound, the compound represented by the above formula (38.2), and the compound represented by the above formula (39.2) is preferably 10 to 35 mass% based on the total mass of the liquid crystal composition of the present invention. 15 to 30% by mass is preferred, and 20 to 25% by mass is preferred.

In addition, the compound represented by the formula (X-2) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (X-2-2).

In the above formula (X-2-2), R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound to be combined is not particularly limited, and one or a combination of two or more is preferable in view of low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (X-2-2) is 3% by mass or more based on the total mass of the liquid crystal composition of the present invention in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. The mass% or less is preferably 6% by mass or more and 16% by mass or less, more preferably 9% by mass or more and 12% by mass or less, and particularly preferably 9% by mass or more and 10% by mass or less.

Furthermore, the general formula used in the liquid crystal composition of the present invention The compound represented by (X-2-2) is specifically at least one compound selected from the group consisting of compounds represented by formula (40.1) to formula (40.4), and contains a compound represented by formula (40.2). The compound is preferred.

Alternatively, the compound represented by the formula (X) is preferably a compound represented by the formula (X-3).

In the above formula (X-3), X ¹⁰² and X ¹⁰³ each independently represent a fluorine atom or a hydrogen atom, and R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or a carbon number. 1 to 4 alkoxy groups.

The compound which can be combined is not particularly limited. consider The solubility at a low temperature, the transfer temperature, the electrical reliability, the birefringence, and the like are preferably one or a combination of two or more.

In addition, the compound represented by the above formula (X-3) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (X-3-1).

In the above formula (X-3-1), R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound to be combined is not particularly limited, and one or a combination of two or more is preferable in view of low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (X-3-1) can be appropriately adjusted in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like.

For example, the content of the compound represented by the above formula (X-3-1) is 1 to 10% by mass based on the total mass of the liquid crystal composition of the present invention, and in another embodiment, In another embodiment, it is 1 to 6% by mass, and in another embodiment, it is 1 to 4% by mass, and in another embodiment, it is 1 to 2% by mass.

Further, the compound represented by the formula (X-3-1) used in the liquid crystal composition of the present invention is specifically selected from the group of compounds represented by the formula (41.1) to the formula (41.4). At least 1 compound is preferred It preferably contains a compound represented by the formula (41.2).

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (41.2) is preferably 1% by mass or more and 20% by mass or less, and 1% by mass or less and 15% by mass or less based on the total mass of the liquid crystal composition of the present invention. Preferably, it is preferably 1% by mass or more and 10% by mass or less, and more preferably 1% by mass or more and 5% by mass or less.

In the case where the liquid crystal composition of the present invention contains at least two compounds represented by the above formula (ii) and further contains the compound represented by the above formula (41.2), the compound represented by the above formula (i) and the aforementioned The total content of the compound represented by the formula (II) and the compound represented by the above formula (41.2) is preferably 30 to 40% by mass, and 33 to 38% by mass based on the total mass of the liquid crystal composition of the present invention. Preferably, 35 to 37% by mass is Better.

Alternatively, the compound represented by the above formula (X) is preferably a compound represented by the formula (X-4).

In the above formula (X-4), X ¹⁰² represents a fluorine atom or a hydrogen atom, and R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkyl group having 1 to 4 carbon atoms. Oxygen.

The compound to be combined is not particularly limited, and it is preferable to use one type or a combination of two or more types in view of low-temperature solubility, transfer temperature, electrical reliability, and birefringence, and it is preferable to combine three or more types.

In addition, the compound represented by the formula (X-4) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (X-4-1).

In the above formula (X-4-1), R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound to be combined is not particularly limited, and it is preferable to use one type or a combination of two or more types in view of low-temperature solubility, transfer temperature, electrical reliability, and birefringence, and it is preferable to combine three or more types.

The content of the compound represented by the above formula (X-4-1) can be appropriately adjusted in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like.

The content of the compound represented by the above formula (X-4-1) is preferably 2% by mass or more and 20% by mass or less based on the total mass of the liquid crystal composition of the present invention, and preferably 5% by mass or more and 17% by mass or less. 10% by mass or more and 15% by mass or less is preferable, and 10% by mass or more and 13% by mass or less is preferable.

Further, the compound represented by the formula (X-4-1) used in the liquid crystal composition of the present invention is specifically selected from the group of compounds represented by the formula (42.1) to the formula (42.4). At least one compound is preferred, and a compound represented by the formula (42.3) is preferred.

Or / again, before use in the liquid crystal composition of the present invention The compound represented by the above formula (X) is preferably a compound represented by the formula (X-4-2).

In the above formula (X-4-2), R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound to be combined is not particularly limited, and it is preferable to use one type or a combination of two or more types in view of low-temperature solubility, transfer temperature, electrical reliability, and birefringence, and it is preferable to combine three or more types.

The content of the compound represented by the above formula (X-4-2) is 1% by mass or more based on the total mass of the liquid crystal composition of the present invention in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. The mass% or less is preferably 1% by mass or more and 15% by mass or less, preferably 1% by mass or more and 10% by mass or less, and preferably 3% by mass or more and 7% by mass or less.

Further, the compound represented by the above formula (X-4-2) used in the liquid crystal composition of the present invention is specifically selected from the group consisting of compounds represented by formula (42.11) to formula (42.14). At least one compound is preferred, and a compound represented by the formula (42.13) and/or the formula (42.14) is preferred.

In addition, the compound represented by the above formula (X) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (X-4-3).

In the above formula (X-4-3), R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound to be combined is not particularly limited, and it is preferable to use one type or a combination of two or more types in view of low-temperature solubility, transfer temperature, electrical reliability, and birefringence, and it is preferable to combine three or more types.

The content of the compound represented by the above formula (X-4-3) is 2% by mass or more and 20% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. % or less is preferably 2% by mass or more and 15% by mass or less, preferably 2% by mass or more and 10% by mass or less, and preferably 2% by mass or more and 5% by mass or less.

Further, the compound represented by the above formula (X-4-3) used in the liquid crystal composition of the present invention is specifically selected from the group consisting of compounds represented by formula (42.21) to formula (42.24). At least one compound is preferred, and a compound represented by the formula (42.22) is preferred.

Alternatively, the compound represented by the above formula (X) is preferably a compound represented by the formula (X-5).

In the above formula (X-5), X ¹⁰² represents a fluorine atom or a hydrogen atom, and R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkane having 1 to 4 carbon atoms. Oxygen.

Compounds that can be combined are not particularly limited, consider The solubility at a low temperature, the transfer temperature, the electrical reliability, the birefringence, and the like are preferably one type or two or more types, and three or more types are preferably combined.

Further, the compound represented by the above formula (X-5) is preferably a compound represented by the formula (X-5-1).

In the above formula (X-5-1), R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound to be combined is not particularly limited, and it is preferable to use one type or a combination of two or more types in view of low-temperature solubility, transfer temperature, electrical reliability, and birefringence, and it is preferable to combine three or more types.

The content of the compound represented by the above formula (X-5-1) is 2% by mass or more based on the total mass of the liquid crystal composition of the present invention in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. The mass% or less is preferably 5% by mass or more and 17% by mass or less, preferably 10% by mass or more and 15% by mass or less, and preferably 10% by mass or more and 13% by mass or less.

The compound represented by the above formula (X-5-1) is specifically at least one compound selected from the group consisting of compounds represented by formula (43.1) to formula (43.4), and contains the formula (43.2). The compound represented is preferred.

Further, the compound represented by the above formula (X) is preferably a compound represented by the formula (X-6).

In the above formula (X-6), R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound to be combined is not particularly limited, and one or a combination of two or more is preferable in view of low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (X-6) can be appropriately adjusted in consideration of properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

For example, the content of the compound represented by the above formula (X-6) is from 1 to 25% by mass in one embodiment of the present invention, and is 1 in another embodiment, based on the total mass of the liquid crystal composition of the present invention. ~20% by mass, and in another embodiment, 1 to 15% by mass, and in still another embodiment, 2 to 15% by mass, and in another embodiment, 2 to 14% by mass, and yet another implementation In the embodiment, it is 2 to 13% by mass, and in still another embodiment, it is 2 to 12% by mass, and in still another embodiment, it is 2 to 11% by mass, and in still another embodiment, it is 2 to 10% by mass. In still another embodiment, it is 2 to 8 mass%, and in still another embodiment, 3 to 15 mass%, and in still another embodiment, 5 to 15 mass%, and in still another embodiment. 6 to 15% by mass, and in another embodiment, 7 to 15% by mass, and in still another embodiment, 8 to 15% by mass, and in still another embodiment, 9 to 15% by mass, In still another embodiment, it is 11 to 15% by mass, and in still another embodiment, it is 3 to 8 mass%, and in still another embodiment, 5 to 13 mass%, and in still another embodiment, 6 ~8 mass%, yet another implementation In the state, it is 7 to 11% by mass, and in still another embodiment, it is 8 to 11% by mass, and in still another embodiment, it is 9 to 14% by mass, and in still another embodiment, it is 9 to 12% by mass. In still another embodiment, it is 9 to 10% by mass, and in still another embodiment, it is 11 to 12% by mass.

In addition, the compound represented by the above formula (X-6) is specifically at least one compound selected from the group consisting of compounds represented by formula (44.1) to formula (44.4), and contains a formula ( The compound represented by 44.1) and/or formula (44.2) is preferred.

In the embodiment in which the compound represented by the above formula (ii) contained in the liquid crystal composition of the present invention is at least two, and the compound represented by the above formula (X-6) is one type, the above formula The compound represented by (X-6) is preferably a compound represented by the above formula (44.2). In the above embodiment, the total content of the compound represented by the above formula (i), the compound represented by the above formula (ii), and the compound represented by the above formula (44.2) is based on the total amount of the liquid crystal composition of the present invention. The mass is preferably 30 to 50% by mass, more preferably 35 to 50% by mass, more preferably 36 to 42% by mass in one embodiment, and 45 to 49% by mass in the other embodiment.

The liquid crystal composition containing at least two kinds of the compounds represented by the above formula (ii) may further contain two kinds of compounds represented by the above formula (X-6), and in the embodiment, the above formula ( i) the compound represented by the above formula, the compound represented by the above formula (ii), and the above formula (X-6) The total content of the compound to be expressed is preferably from 40 to 55% by mass based on the total mass of the liquid crystal composition of the present invention, and in one embodiment, preferably from 40 to 45% by mass, and in another embodiment from 48 to 54% by mass. % is better.

Further, the liquid crystal compound of the present invention may contain a compound represented by the formula (X'-7) similar to the compound represented by the above formula (X) as the compound represented by the above formula (M).

In the above formula (X'-7), R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound to be combined is not particularly limited, and one or a combination of two or more is preferable in view of low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (X'-7) can be appropriately adjusted in consideration of properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

For example, the content of the compound represented by the above formula (X'-7) is 1 to 20% by mass based on the total mass of the liquid crystal composition of the present invention, and in another embodiment, 1 to 15% by mass, and in another embodiment, 1 to 10% by mass, and in still another embodiment, 1 to 5% by mass.

Further, the compound represented by the formula (X'-7) used in the liquid crystal composition of the present invention is specifically from the formula (44.11) to the formula. (44.14) It is preferred to select at least one compound selected from the group consisting of compounds represented by the formula (44.13).

Alternatively, the compound represented by the above formula (X) is preferably a compound represented by the formula (X-8).

In the above formula (X-8), R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound to be combined is not particularly limited, and one or a combination of two or more is preferable in view of low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (X-8) can be tested The characteristics such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence are appropriately adjusted.

For example, the content of the compound represented by the above formula (X-8) is 1 to 25% by mass in one embodiment of the present invention, and is 1 in the other embodiment, based on the total mass of the liquid crystal composition of the present invention. ~20% by mass, and in another embodiment, 1 to 15% by mass, and in still another embodiment, 1 to 10% by mass, and in another embodiment, 1 to 5% by mass, and yet another implementation In the form, it is 1 to 4% by mass.

In addition, the compound represented by the above formula (X-8) is specifically at least one compound selected from the group consisting of compounds represented by formula (44.21) to formula (44.24), and contains a formula ( 44.22) The compound represented is preferred.

Alternatively, the compound represented by the above formula (X) is preferably at least one compound selected from the group consisting of compounds represented by the formula (XI).

In the above formula (XI), X ¹¹¹ to X ¹¹⁷ each independently represent a fluorine atom or a hydrogen atom, and at least one of X ¹¹¹ to X ¹¹⁷ represents a fluorine atom, and R ¹¹⁰ represents an alkyl group having 1 to 5 carbon atoms and carbon. An alkenyl group having 2 to 5 atoms or an alkoxy group having 1 to 4 carbon atoms, and Y ¹¹ represents a fluorine atom or -OCF ₃ .

The compound which can be combined is not particularly limited, and in view of low-temperature solubility, transfer temperature, electrical reliability, birefringence and the like, for example, one embodiment of the present invention is one type, and in another embodiment, It is preferable to combine three or more types in two types and another embodiment.

The content of the compound represented by the above formula (XI) can be appropriately adjusted in consideration of properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

For example, the content of the compound represented by the above formula (XI) is 1 to 30% by mass in one embodiment of the present invention, and 1 to 30% in another embodiment of the present invention. In another embodiment, it is 1 to 23% by mass, and in still another embodiment, it is 1 to 22% by mass, and in still another embodiment, it is 1 to 18% by mass, and yet another In the embodiment, it is 1 to 16% by mass, and in still another embodiment, it is 1 to 15% by mass, and in still another embodiment, it is 1 to 13% by mass, and yet another In one embodiment, it is 1 to 12% by mass, and in still another embodiment, it is 1 to 10% by mass, and in still another embodiment, it is 1 to 7 mass%, and in still another embodiment, it is 1 to 6 mass%. In another embodiment, the mass % is 1 to 5% by mass, and in still another embodiment, 1 to 4% by mass, and in still another embodiment, 2 to 22% by mass. In the embodiment, it is 4 to 22% by mass, and in still another embodiment, it is 7 to 22% by mass, and in still another embodiment, it is 9 to 22% by mass, and in still another embodiment, it is 10 to 22% by mass. In still another embodiment, the ratio is 13 to 22% by mass, and in still another embodiment, 15 to 22% by mass, and in still another embodiment, 16 to 22% by mass, and in still another embodiment. It is 18 to 22% by mass, and in another embodiment, it is 20 to 22% by mass, and in still another embodiment, it is 2 to 6% by mass, and in still another embodiment, it is 2 to 5% by mass. In still another embodiment, it is 9 to 10% by mass, and in still another embodiment, it is 10 to 12% by mass.

When the liquid crystal composition of the present invention is used for a liquid crystal display device having a small cell gap, the content of the compound represented by the above formula (XI) is preferably a little more. In the case of a liquid crystal display element having a small driving voltage, it is preferable to make the content of the compound represented by the above formula (XI) slightly larger. Moreover, in the case of being used for a liquid crystal display element used in a low-temperature environment, it is preferable to make the content of the compound represented by the above formula (XI) slightly smaller. In the case of a liquid crystal composition for a liquid crystal display element having a fast response speed, it is preferable to make the content of the compound represented by the above formula (XI) slightly smaller.

In addition, the compound represented by the formula (XI) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (XI-1).

In the above formula (XI-1), R ¹¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound which can be combined is not particularly limited, and may be appropriately combined according to the embodiment in consideration of low-temperature solubility, transfer temperature, electrical reliability, and birefringence. For example, in one embodiment of the present invention, one type is used, and in another embodiment, two types are combined, and in still another embodiment, three or more types are combined.

The content of the compound represented by the above formula (XI-1) is 1% by mass or more and 35% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. The following is preferable, and 1% by mass or more and 30% by mass or less is preferable, and 1% by mass or more and 25% by mass or less is preferable. In the above, the content of the compound represented by the above formula (XI-1) is preferably 2 to 22% by mass, more preferably 2 to 21% by mass, based on the total mass of the liquid crystal composition of the present invention, 2~ 18% by mass is preferred, 2 to 16% by mass is preferred, 2 to 15% by mass is preferred, 2 to 13% by mass is preferred, 2 to 12% by mass is preferred, 2 to 10% by mass is preferred, and 2 to 7% by mass is preferred. % is better, 2~6 mass% is better, 2~5 mass% is better, 2~4 mass% is better, 4~22 mass% is better, 5~22 mass% is better, 7~22 mass% is Preferably, 9 to 22% by mass is preferred, 10 to 22% by mass is preferred, 13 to 22% by mass is preferred, 15 to 22% by mass is preferred, 16 to 22% by mass is preferred, and 18 to 22% by mass is preferred. 20 to 22% by mass is preferred, 9 to 10% by mass is preferred, and 10 to 12% by mass is preferred.

Further, the compound represented by the formula (XI-1) used in the liquid crystal composition of the present invention is specifically at least 1 selected from the group consisting of compounds represented by the formula (45.1) to the formula (45.4). Preferably, the compound is preferably at least one compound selected from the group consisting of compounds represented by formula (45.2) to formula (45.4), and contains a compound represented by formula (45.2) and/or formula (45.4). good.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (45.2) is 1 mass in comparison with the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. % or more and 25% by mass or less is preferable, and 1% by mass or more and 20% by mass or less is preferable, and 1% by mass or more and 15% by mass or less is preferable, and 1% by mass or more and 11% by mass or less is preferable, and 2% by mass or more and 7 mass% or less are preferable. It is better.

In the liquid crystal composition of the present invention, the above formula (45.3) is The content of the compound to be used is preferably 1% by mass or more and 20% by mass or less based on the total mass of the liquid crystal composition of the present invention, and the content of the compound is preferably 1% by mass or more and 15% by mass or less. The mass% or less is preferably 1% by mass or more and 10% by mass or less, preferably 2% by mass or more and 10% by mass or less, more preferably 2% by mass or more and 9% by mass or less, and most preferably 4% by mass or more and 10% by mass or less.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (45.4) is 1 mass in comparison with the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. The amount is preferably 20% by mass or more, more preferably 1% by mass or more and 15% by mass or less, and more preferably 1% by mass or more and 10% by mass or less. In particular, it is preferably 4% by mass or more and 20% by mass or less, 4% by mass or more and 15% by mass or less, 4% by mass or more and 10% by mass or less, and preferably 5% by mass or more and 10% by mass or less.

In the case where the compound represented by the above formula (ii) is contained in the liquid crystal composition of the present invention, and the compound represented by the above formula (45.4) is further contained, the compound represented by the above formula (i), The total content of the compound represented by the above formula (ii) and the compound represented by the above formula (45.4) is preferably 10 to 40% by mass, and 15 to 35% by mass based on the total mass of the liquid crystal composition of the present invention. Preferably, 20 to 35 mass% is more preferable, and 20 to 30 mass% is particularly preferable.

In the liquid crystal composition of the present invention, the compound represented by the above formula (ii) is one type, and further contains the compound represented by the above formula (8.1) and the compound represented by the above formula (45.4). a compound represented by the above formula (i), a compound represented by the above formula (ii), The total content of the compound represented by the above formula (8.1) and the compound represented by the above formula (45.4) is preferably 10 to 30% by mass, and 15 to 30% by mass based on the total mass of the liquid crystal composition of the present invention. Preferably, 20 to 30% by mass is more preferred, and 20 to 25% by mass is particularly preferred.

The compound represented by the above formula (ii) contained in the liquid crystal composition of the present invention is one type, and further contains the compound represented by the above formula (IV-2) and the compound represented by the above formula (45.4). In the case, the total content of the compound represented by the above formula (i), the compound represented by the above formula (ii), the compound represented by the above formula (IV-2), and the compound represented by the above formula (45.4) The total mass of the liquid crystal composition of the present invention is preferably 20 to 40% by mass, preferably 25 to 40% by mass, more preferably 25 to 35% by mass, and particularly preferably 27 to 32% by mass.

In the liquid crystal composition of the present invention, the compound represented by the above formula (ii) is at least two, and the compound represented by the above formula (XI-1) contained in the liquid crystal composition is one type. In the embodiment, the compound represented by the above formula (XI-1) is preferably a compound represented by the above formula (45.2). In the above embodiment, the total content of the compound represented by the above formula (i), the compound represented by the above formula (ii), and the compound represented by the above formula (45.2) is based on the total amount of the liquid crystal composition of the present invention. The quality is preferably 35 to 55 mass%, 38 to 50 mass% is preferred, and 39 to 46 mass% is more preferred.

In the embodiment in which at least two kinds of the compounds represented by the above formula (ii) are contained in the liquid crystal composition of the present invention, three kinds of compounds represented by the above formula (XI-1) may be contained. In the embodiment, the compound represented by the above formula (i) and the compound represented by the above formula (ii) The total content of the compound represented by the above formula (XI-1) is preferably 35 to 55 mass%, more preferably 40 to 50 mass%, and 42 to 46, based on the total mass of the liquid crystal composition of the present invention. The mass % is better.

In addition, the compound represented by the above formula (XI) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (XI-2).

In the above formula (XI-2), R ¹¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound which can be combined is not particularly limited, and may be appropriately combined according to the embodiment in consideration of low-temperature solubility, transfer temperature, electrical reliability, and birefringence. For example, in one embodiment of the present invention, one type is used, and in another embodiment, two types are combined, and in still another embodiment, three or more types are combined.

The content of the compound represented by the above formula (XI-2) is 1% by mass or more and 20% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. The following is preferable, and 1% by mass or more and 15% by mass or less is preferable, and 1% by mass or more and 10% by mass or less is preferable, and 1% by mass or more and 5% by mass or less is preferable, and 1% by mass or more and 3% by mass or less is preferable.

Further, the compound represented by the formula (XI-2) used in the liquid crystal composition of the present invention is specifically from the formula (45.11) to the formula. (45.14) Preferably, at least one compound selected from the group consisting of compounds is contained, and at least one compound selected from the group consisting of compounds represented by formula (45.12) to formula (45.14) is preferred, and formula (45.12) is contained. The compound represented is preferred.

In addition, it is preferred that the compound represented by the above formula (X) is at least one compound selected from the group consisting of compounds represented by the formula (XII).

In the above formula (XII), X ¹²¹ to X ¹²⁶ each independently represent a fluorine atom or a hydrogen atom, and R ¹²⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or 1 to 1 carbon atom. The alkoxy group of 4, Y ¹² represents a fluorine atom or -OCF ₃ .

The compound to be combined is not particularly limited, and in view of low-temperature solubility, transfer temperature, electrical reliability, and birefringence, it is preferred to appropriately combine 1 or 3 or more kinds, and it is preferable to appropriately combine 1 to 4 or more. .

In addition, the compound represented by the formula (XII) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (XII-1).

In the above formula (XII-1), R ¹²⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound to be combined is not particularly limited, and it is preferably one or two or more kinds in combination, and one or three or more kinds are preferable in view of low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (XII-1) is 1% by mass or more and 15% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. The following is preferable, and 2% by mass or more and 10% by mass or less is preferable, and 3% by mass or more and 8% by mass or less is preferable, and 4% by mass or more and 6% by mass or less is preferable.

Further, the compound represented by the formula (XII-1) used in the liquid crystal composition of the present invention is specifically at least 1 selected from the group consisting of compounds represented by the formula (46.1) to the formula (46.4). Kind of compound is better It is preferred to contain at least one compound selected from the group consisting of compounds represented by formula (46.2) to formula (46.4).

Alternatively, the compound represented by the above formula (XII) is preferably a compound represented by the formula (XII-2).

In the above formula (XII-2), R ¹²⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound which can be combined is not particularly limited, and it is preferably one or two or more kinds in combination, and one type to three or more types are preferable in view of low-temperature solubility, transfer temperature, electrical reliability, and birefringence. good.

The content of the compound represented by the above formula (XII-2) is 1% by mass or more and 20% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. The content is preferably 3% by mass or more and 20% by mass or less, preferably 4% by mass or more and 17% by mass or less, more preferably 6% by mass or more and 15% by mass or less, and particularly preferably 9% by mass or more and 13% by mass or less.

Further, the compound represented by the formula (XII-2) used in the liquid crystal composition of the present invention is specifically at least 1 selected from the group consisting of compounds represented by the formula (47.1) to the formula (47.4). Preferably, the compound is preferably at least one compound selected from the group consisting of compounds represented by formula (47.2) to formula (47.4).

Alternatively, the compound represented by the above formula (M) is preferably at least one compound selected from the group consisting of compounds represented by the formula (XIII).

In the above formula (XIII), X ¹³¹ to X ¹³⁵ each independently represent a fluorine atom or a hydrogen atom, and R ¹³⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or 1 to 1 carbon atom. Alkoxy group of 4, Y ¹³ represents a fluorine atom or -OCF ₃ .

The type of the compound which can be combined is not particularly limited, and it is preferably one or two kinds of the compounds, and preferably one to three, more preferably one or four.

The content of the compound represented by the above formula (XIII) can be appropriately adjusted in consideration of properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

For example, the content of the compound represented by the above formula (XIII) is 2 to 30% by mass in one embodiment of the present invention, and 4 to 30 in another embodiment, based on the total mass of the liquid crystal composition of the present invention. In another embodiment, the mass % is 5 to 30% by mass, and in still another embodiment, 7 to 30% by mass, and in still another embodiment, 9 to 30% by mass, and still another embodiment. In the other embodiment, it is 11 to 30% by mass, and in still another embodiment, it is 13 to 30% by mass, and in still another embodiment, it is 14 to 30% by mass, and in still another embodiment, it is 16 to 30% by mass. In still another embodiment It is 20 to 30% by mass.

Further, for example, the content of the compound represented by the above formula (XIII) is 2 to 25% by mass based on the total mass of the liquid crystal composition of the present invention, and in another embodiment, The content of the compound is 2 to 20% by mass, and in still another embodiment, the content of the compound is 2 to 15% by mass, and in still another embodiment, the content of the compound is 2 to 10% by mass. In still another embodiment, the content of the compound is from 2 to 5% by mass.

When the liquid crystal composition of the present invention is used for a liquid crystal display device having a small cell gap, the content of the compound represented by the above formula (XIII) is preferably a little more. In the case of a liquid crystal display element having a small driving voltage, it is preferable to make the content of the compound represented by the above formula (XIII) slightly larger. Moreover, in the case of being used for a liquid crystal display element used in a low-temperature environment, it is preferable to make the content of the compound represented by the above formula (XIII) slightly smaller. In the case of a liquid crystal composition for a liquid crystal display element having a fast response speed, it is preferable to make the content of the compound represented by the above formula (XIII) slightly smaller.

Further, the compound represented by the above formula (XIII) is preferably a compound represented by the formula (XIII-1).

In the above formula (XIII-1), R ¹³⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound represented by the above formula (XIII-1) is preferably contained in an amount of 1% by mass or more and 25% by mass or less based on the total mass of the liquid crystal composition of the present invention, and more preferably 3% by mass or more and 25% by mass or less. The mass% or more is preferably 20% by mass or less, and more preferably 10% by mass or more and 15% by mass or less.

Further, the compound represented by the formula (XIII-1) is preferably at least one compound selected from the group consisting of compounds represented by the formula (48.I) to the formula (48.4), and is represented by the formula (48.2). The compound is preferred.

Alternatively, the compound represented by the above formula (XIII) is preferably a compound represented by the formula (XIII-2).

In the above formula (XIII-2), R ¹³⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The type of the compound which can be combined is not particularly limited, and it is preferred to contain one or two or more kinds of these compounds.

The compound represented by the above formula (XIII-2) is preferably contained in an amount of 1% by mass or more and 25% by mass or less based on the total mass of the liquid crystal composition of the present invention, and more preferably 1% by mass or more and 20% by mass or less. The mass% or more is preferably 15% by mass or less, and more preferably 3% by mass or more and 14% by mass or less. In the above, the compound represented by the above formula (XIII-2) is preferably contained in an amount of 3% by mass or more and 11% by mass or less, and preferably 3% by mass or more and 6% by mass based on the total mass of the liquid crystal composition of the present invention. The content is preferably 6% by mass or more and 14% by mass or less, and more preferably 11% by mass or more and 14% by mass or less.

Further, the compound represented by the formula (XIII-2) is preferably at least one compound selected from the group consisting of compounds represented by the formula (49.1) to the formula (49.4), and is represented by the formula (49.1) and/or the formula. The compound represented by (49.2) is preferred.

Alternatively, the compound represented by the above formula (XIII) is preferably a compound represented by the formula (XIII-3).

In the above formula (XIII-3), R ¹³⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The type of the compound which can be combined is not particularly limited, and it is preferred to contain one or two or more kinds of these compounds.

The compound represented by the above formula (XIII-3) is preferably contained in an amount of 2% by mass or more and 20% by mass or less based on the total mass of the liquid crystal composition of the present invention, and is preferably contained in an amount of 4% by mass or more and 20% by mass or less. It is preferably 17% by mass or less by mass% or more, and 11% by mass or more and 14% by mass. % below is better.

Further, the compound represented by the above formula (XIII-3) is preferably at least one compound selected from the group consisting of compounds represented by formula (50.1) to formula (50.4), and is represented by formula (50.1) and/or The compound represented by the formula (50.2) is preferred.

Further, the compound represented by the above formula (M) is preferably at least one compound selected from the group of compounds represented by the formula (XIV).

In the above formula (XIV), R ¹⁴⁰ represents an alkyl group having 1 to 7 carbon atoms, an alkenyl group having 2 to 7 carbon atoms or an alkoxy group having 1 to 7 carbon atoms, and X ¹⁴¹ to X ¹⁴⁴ are each independently represented. A fluorine atom or a hydrogen atom, Y ¹⁴ represents a fluorine atom, a chlorine atom or OCF ₃ , and Q ¹⁴ represents a single bond, -COO- or -CF ₂ O-, and m ¹⁴ is 0 or 1.

The type of the compound which can be combined is not limited, and it can be appropriately combined according to the embodiment in consideration of low-temperature solubility, transfer temperature, electrical reliability, and birefringence. For example, in one embodiment of the present invention, it is one type. Furthermore, in another embodiment of the present invention, there are two types. Alternatively, still another embodiment of the present invention is three types. Further, in still another embodiment of the present invention, there are four types. Alternatively, in still another embodiment of the present invention, there are five types. Alternatively, in still another embodiment of the present invention, it is six or more.

The content of the compound represented by the above formula (XIV) can be appropriately adjusted in consideration of characteristics such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

For example, the content of the compound represented by the above formula (XIV) is 1 to 30% by mass in one embodiment of the present invention, and 1 to 25 in another embodiment, based on the total mass of the liquid crystal composition of the present invention. In another embodiment, the mass % is 5 to 25 mass %, and in still another embodiment, 5 to 24 mass %, and in still another embodiment, 5 to 22 mass %, and still another embodiment. In the other embodiment, it is 5 to 10% by mass, and in another embodiment, it is 5 to 9% by mass, and in still another embodiment, it is 5 to 8% by mass, and in still another embodiment, it is 5 to 7% by mass. In still another embodiment, it is 7 to 24 mass%, and in still another embodiment, it is 8 to 24 mass%, and in still another embodiment, 22 to 24 mass%, and in still another embodiment, 7~9 mass% In still another embodiment, it is 7 to 8 mass%.

When the liquid crystal composition of the present invention is used for a liquid crystal display element having a small driving voltage, the content of the compound represented by the above formula (XIV) is preferably a little more. Further, in the case of a liquid crystal composition for a liquid crystal display element having a fast response speed, it is preferred that the content of the compound represented by the above formula (XIV) is slightly less.

Further, the compound represented by the formula (XIV) is preferably a compound represented by the formula (XIV-1).

In the above formula (XIV-1), R ¹⁴⁰ represents an alkyl group having 1 to 7 carbon atoms, an alkenyl group having 2 to 7 carbon atoms or an alkoxy group having 1 to 7 carbon atoms, and Y ¹⁴ represents a fluorine atom. Chlorine atom or -OCF ₃ .

The type of the compound which can be combined is not limited, and it is preferable to combine 1-3 types in consideration of low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

Further, the compound represented by the formula (XIV-1) is preferably a compound represented by the formula (XIV-1-1).

In the above formula (XIV-1-1), R ¹⁴⁰ represents an alkyl group having 1 to 7 carbon atoms, an alkenyl group having 2 to 7 carbon atoms or an alkoxy group having 1 to 7 carbon atoms.

The content of the compound represented by the above formula (XIV-1-1) can be considered in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. Make appropriate adjustments.

For example, the content of the compound represented by the above formula (XIV-1-1) is 1% by mass or more and 20% by mass in one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. In the embodiment, it is 1% by mass or more and 15% by mass, and in another embodiment, it is 1% by mass or more and 10% by mass or less, and in still another embodiment, it is 1% by mass or more and 85% by mass or less. In the other embodiment, it is 3% by mass or more and 8% by mass or less, and in still another embodiment, it is 7% by mass or more and 8% by mass or less.

Further, the compound represented by the formula (XIV-1-1) is specifically at least one compound selected from the group consisting of compounds represented by the formula (51.1) to the formula (51.4), and is preferably The compound represented by 51.1) is preferred.

Further, the compound represented by the formula (XIV-1) is preferably a compound represented by the formula (XIV-1-2).

In the above formula (XIV-1-2), R ¹⁴⁰ represents an alkyl group having 1 to 7 carbon atoms, an alkenyl group having 2 to 7 carbon atoms or an alkoxy group having 1 to 7 carbon atoms.

The content of the compound represented by the above formula (XIV-1-2) is 1% by mass or more based on the total mass of the liquid crystal composition of the present invention in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. The mass% or less is preferably 3% by mass or more and 13% by mass or less, preferably 5% by mass or more and 11% by mass or less, and preferably 7% by mass or more and 9% by mass or less.

In addition, the compound represented by the formula (XIV-1-2) is specifically at least one compound selected from the group consisting of compounds represented by the formula (52.1) to the formula (52.4), and the formula thereof The compound represented by (52.4) is preferred.

Alternatively, the compound represented by the above formula (XIV) is preferably a compound represented by the formula (XIV-2).

In the above formula (XIV-2), R ¹⁴⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and each of X ¹⁴¹ to X ¹⁴⁴ Independently represents a fluorine atom or a hydrogen atom, and Y ¹⁴ represents a fluorine atom, a chlorine atom or -OCF ₃ .

The type of the compound which can be combined is not limited, and it can be appropriately combined according to the embodiment in consideration of low-temperature solubility, transfer temperature, electrical reliability, and birefringence. For example, in one embodiment of the present invention, it is one type. Furthermore, in another embodiment of the present invention, there are two types. Alternatively, still another embodiment of the present invention is three types. Further, in still another embodiment of the present invention, there are four types. Alternatively, in still another embodiment of the present invention, five or more types are used.

The content of the compound represented by the above formula (XIV-2) can be appropriately adjusted in consideration of characteristics such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

For example, the content of the compound represented by the above formula (XIV-2) is from 1 to 35 mass% in one embodiment of the present invention, and is 1 in another embodiment, based on the total mass of the liquid crystal composition of the present invention. ~30% by mass, and in another embodiment, 1 to 25% by mass, and in still another embodiment, 5 to 25% by mass, and in still another embodiment, 5 to 22% by mass, and yet another In the embodiment, it is 5 to 21% by mass, and in still another embodiment, it is 5 to 10% by mass, and in still another embodiment, it is 5 to 8% by mass. In still another embodiment, it is 8 to 25% by mass, and in still another embodiment, 21 to 25% by mass, and in still another embodiment, 21 to 22% by mass.

When the liquid crystal composition of the present invention is used for a liquid crystal display element having a small driving voltage, the content of the compound represented by the above formula (XIV-2) is preferably a little more. Further, in the case of a liquid crystal composition for a liquid crystal display element having a fast response speed, it is preferable to make the content of the compound represented by the above formula (XIV-2) slightly smaller.

Further, the compound represented by the formula (XIV-2) is preferably a compound represented by the formula (XIV-2-1).

In the above formula (XIV-2-1), R ¹⁴⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The content of the compound represented by the above formula (XIV-2-1) is 1% by mass or more based on the total mass of the liquid crystal composition of the present invention in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. The mass% or less is preferably 3% by mass or more and 13% by mass or less, preferably 5% by mass or more and 11% by mass or less, and preferably 7% by mass or more and 9% by mass or less.

Further, the compound represented by the formula (XIV-2-1), specifically, at least one compound selected from the group consisting of compounds represented by the formula (53.1) to the formula (53.4), preferably contains a formula The compound represented by (53.4) is preferred.

Alternatively, the compound represented by the above formula (XIV-2) is preferably a compound represented by the formula (XIV-2-2).

In the above formula (XIV-2-2), R ¹⁴⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The content of the compound represented by the above formula (XIV-2-2) is 3% by mass or more based on the total mass of the liquid crystal composition of the present invention in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. The mass% or less is preferably 6% by mass or more and 17% by mass or less, preferably 6% by mass or more and 15% by mass or less, more preferably 7 mass% or more and 10 mass% or less, and most preferably 7 mass% or more and 9 mass% or less. It is preferably 7 mass% or more and 8 mass% or less.

Further, the compound represented by the formula (XIV-2-2), specifically, at least one compound selected from the group consisting of compounds represented by the formula (54.1) to the formula (54.4), preferably contains a formula The compound represented by (54.1), formula (54.2), and/or formula (54.4) is preferred.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (54.1) is preferably 0.5% by mass or more and 20% by mass or less based on the total mass of the liquid crystal composition of the present invention, and 0.5% by mass or less and 15% by mass or less. Preferably, it is preferably 0.5% by mass or more and 10% by mass or less, more preferably 0.5% by mass or more and 5% by mass or less, more preferably 0.5% by mass or more and 4% by mass or less, more preferably 2% by mass or more and 4% by mass or less, and 0.5% by mass or less. The above is preferably less than 4% by mass.

In the embodiment in which the liquid crystal composition of the present invention contains at least two compounds represented by the above formula (ii), it is preferred to contain the compound represented by the above formula (54.1), the compound represented by the above formula (i), and the The total content of the compound represented by the formula (II) and the compound represented by the above formula (54.1) is preferably 10 to 45% by mass, and 20 to 45% by mass based on the total mass of the liquid crystal composition of the present invention. Preferably, 30 to 40% by mass is more preferable, and 35 to 40% by mass is particularly preferable.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (54.2) is relative to the total mass of the liquid crystal composition of the present invention. 1% by mass or more and 20% by mass or less is preferable, 1% by mass or 15% by mass or less, preferably 1% by mass or more and 10% by mass or less, more preferably 4% by mass or more and 10% by mass or less, and 5% by mass or more. The mass% or less is preferably 1% by mass or more and 75% by mass or less, preferably 4% by mass or more and 7% by mass or less, and preferably 5% by mass or more and 7% by mass or less.

Alternatively, the compound represented by the above formula (XIV-2) is preferably a compound represented by the formula (XIV-2-3).

In the above formula (XIV-2-3), R ¹⁴⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The content of the compound represented by the above formula (XIV-2-3) is 5% by mass or more based on the total mass of the liquid crystal composition of the present invention in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. The mass% or less is preferably 9% by mass or more and 27% by mass or less, more preferably 12% by mass or more and 24% by mass or less, and more preferably 12% by mass or more and 20% by mass or less.

Further, the compound represented by the formula (XIV-2-3), specifically, at least one compound selected from the group consisting of the compounds represented by the formula (55.1) to the formula (55.4), preferably contains a formula The compound represented by (55.2) and/or formula (55.4) is preferred.

Alternatively, the compound represented by the above formula (XIV-2) is preferably a compound represented by the formula (XIV-2-4).

In the above formula (XIV-2-4), R ¹⁴⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The type of the compound which can be combined is not limited, and it can be appropriately combined according to the embodiment in consideration of low-temperature solubility, transfer temperature, electrical reliability, and birefringence. For example, in one embodiment of the present invention, it is one type. Furthermore, in another embodiment of the present invention, there are two types. Alternatively, still another embodiment of the present invention is three or more.

The content of the compound represented by the above formula (XIV-2-4) is considered to be low temperature solubility, transfer temperature, electrical reliability, and birefringence. The characteristics such as the incident rate can be appropriately adjusted in accordance with the embodiment.

For example, the content of the compound represented by the above formula (XIV-2-4) is 1 to 30% by mass based on the total mass of the liquid crystal composition of the present invention, and in another embodiment, It is 1 to 25% by mass, and in another embodiment, it is 1 to 22% by mass, and in still another embodiment, it is 5 to 22% by mass, and in still another embodiment, it is 8 to 22% by mass. In another embodiment, it is 14 to 22% by mass, and in still another embodiment, it is 21 to 22% by mass, and in still another embodiment, it is 5 to 21% by mass, and in still another embodiment, it is 5 to 10% by mass.

When the liquid crystal composition of the present invention is used for a liquid crystal display device having a small driving voltage, the content of the compound represented by the above formula (XIV-2-4) is preferably a little more. Further, in the case of a liquid crystal composition for a liquid crystal display element having a fast response speed, it is preferable to make the content of the compound represented by the above formula (XIV-2-4) slightly smaller.

In addition, the compound represented by the above formula (XIV-2-4) is preferably at least one compound selected from the group consisting of compounds represented by formula (56.1) to formula (56.4), which contains A compound represented by the formula (56.1), the formula (56.2), and/or the formula (56.4) is preferred.

For example, the content of the compound represented by the above formula (56.1) is 1 to 25% by mass in one embodiment of the present invention, and 1 to 20% by mass in another embodiment, based on the total mass of the liquid crystal composition of the present invention. In still another embodiment, it is 1 to 15% by mass, and in still another embodiment, it is 1 to 11% by mass, and in still another embodiment, 3 to 11% by mass. It is 5 to 11% by mass, and in still another embodiment, it is 3 to 8% by mass, and in still another embodiment, it is 5 to 8% by mass, and in still another embodiment, it is 10 to 11% by mass.

For example, the content of the compound represented by the above formula (56.4) is 1 to 25% by mass in one embodiment of the present invention, and 1 to 20% in another embodiment, based on the total mass of the liquid crystal composition of the present invention. In still another embodiment, it is 1 to 11% by mass, and in still another embodiment, it is 3 to 11% by mass, and in still another embodiment, it is 8 to 11% by mass.

In the case where the compound represented by the above formula (ii) is contained in the liquid crystal composition of the present invention, and the compound represented by the above formula (56.1) is further contained, the compound represented by the above formula (i), The total content of the compound represented by the above formula (ii) and the compound represented by the above formula (56.1) is preferably 10 to 40% by mass, and 20 to 40% by mass based on the total mass of the liquid crystal composition of the present invention. Preferably, 25 to 40% by mass is more preferable, and 30 to 35% by mass is particularly preferable.

The compound represented by the above formula (ii) contained in the liquid crystal composition of the present invention contains one kind of compound, the compound represented by the above formula (6.6), the compound represented by the above formula (28.5), and the above formula. (56.1) In the case of the compound represented by the above formula (i), the compound represented by the above formula (ii), the compound represented by the above formula (28.5), and the compound represented by the above formula (6.6) The total content of the compound represented by the above formula (56.1) is preferably 30 to 70% by mass, more preferably 40 to 70% by mass, and 40 to 60% by mass based on the total mass of the liquid crystal composition of the present invention. More preferably, 50 to 60% by mass is particularly good.

In the case where at least two compounds represented by the above formula (ii) are contained in the liquid crystal composition of the present invention, it is preferred to contain at least two compounds represented by the above formula (XIV-2-4). When the compound represented by the above formula (XIV-2-4) is contained, it is preferred to contain both the compound represented by the above formula (56.2) and the compound represented by the above formula (56.4).

The content of the compound represented by the above formula (i), at least two compounds represented by the above formula (ii), and at least two compounds represented by the above formula (XIV-2-4) is relative to the liquid crystal of the present invention. The total mass of the composition, 20 to 45 mass% is preferred, 25 to 40 mass% is preferred, and 30 to 35 mass% is more preferred.

Alternatively, the compound represented by the above formula (XIV-2) is preferably a compound represented by the formula (XIV-2-5).

In the above formula (XIV-2-5), R ¹⁴⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The content of the compound represented by the above formula (XIV-2-5) is 5% by mass or more based on the total mass of the liquid crystal composition of the present invention in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. The mass% or less is preferably 10% by mass or more and 22% by mass or less, preferably 13% by mass or more and 18% by mass or less, and preferably 13% by mass or more and 15% by mass or less.

In addition, the compound represented by the above formula (XIV-2-5) is specifically at least one compound selected from the group consisting of compounds represented by formula (57.1) to formula (57.4). Among them, a compound represented by the formula (57.1) is preferred.

Alternatively, the compound represented by the formula (XIV-2) is preferably a compound represented by the formula (XIV-2-6).

In the above formula (XIV-2-6), R ¹⁴⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The content of the compound represented by the above formula (XIV-2-6) is 5% by mass or more based on the total mass of the liquid crystal composition of the present invention in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. The mass% or less is preferably 10% by mass or more and 22% by mass or less, preferably 15% by mass or more and 20% by mass or less, and preferably 15% by mass or more and 17% by mass or less. good.

In addition, the compound represented by the above formula (XIV-2-6) is preferably at least one compound selected from the group consisting of compounds represented by formula (58.1) to formula (58.4), which contains The compound represented by the formula (58.2) is preferred.

Alternatively, the compound represented by the above formula (XIV) is preferably a compound represented by the formula (XIV-3).

In the above formula (XIV-3), R ¹⁴⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The kind of the compound which can be combined is not particularly limited, and can be appropriately combined and used in accordance with desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one embodiment of the present invention. Or another embodiment of the present invention is two or more.

The content of the compound represented by the above formula (XIV-3) is 2.5% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. The above is preferably 25% by mass or less, more preferably 3% by mass or more and 15% by mass or less, and more preferably 3% by mass or more and 10% by mass or less.

In addition, the compound represented by the above formula (XIV-3) is specifically at least one compound selected from the group consisting of compounds represented by formula (61.1) to formula (61.4), and is preferably represented by formula (61.1). And a compound represented by the formula (61.2) is preferred.

Alternatively, the compound represented by the above formula (M) is preferably a compound represented by the formula (XV).

In the above formula (XV), R ¹⁵⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and A ¹⁵¹ represents 1,4-extension. A cyclohexyl group or a 1,4-phenylene group, but the hydrogen atom on the aforementioned 1,4-phenylene group may be substituted by a fluorine atom.

The compound which can be combined is not particularly limited, and may be appropriately combined in consideration of solubility at low temperature, transfer temperature, electrical reliability, birefringence, and the like. For example, in one embodiment of the present invention, it is one type. Further, in another embodiment of the present invention, there are two types. In still another embodiment, there are three types. In still another embodiment, there are four types. In still another embodiment, there are five or more types.

The content of the compound represented by the above formula (XV) can be appropriately adjusted in accordance with the embodiment in consideration of properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence. For example, the content of the compound represented by the above formula (XV) is 0.5 to 30% by mass in one embodiment of the present invention, and 1 to 30 in another embodiment, based on the total mass of the liquid crystal composition of the present invention. In another embodiment, the mass % is 3 to 30% by mass, and in still another embodiment, 6 to 30% by mass, and in still another embodiment, 9 to 30% by mass, and still another embodiment. In the other embodiment, it is 11 to 30% by mass, and in still another embodiment, it is 12 to 30% by mass, and in still another embodiment, it is 18 to 30% by mass, and in still another embodiment, it is 19 to 30% by mass. In still another embodiment, the amount is 23 to 30% by mass, and in still another embodiment, the content is 25 to 30% by mass.

Further, for example, the content of the compound represented by the above formula (XV) is 0.5 to 25% by mass in one embodiment of the present invention, and 0.5 in another embodiment, based on the total mass of the liquid crystal composition of the present invention. In another embodiment, it is 0.5 to 13% by mass, and in still another embodiment, it is 0.5 to 9% by mass, and in still another embodiment, it is 1 to 6% by mass.

The compound represented by the above formula (XV) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (XV-1).

In the above formula (XV-1), R ¹⁵⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound to be combined is not particularly limited, and one or a combination of two or more is preferable in view of low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (XV-1) can be appropriately adjusted in consideration of characteristics such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

For example, the content of the compound represented by the above formula (XV-1) is 1 to 25% by mass in one embodiment of the present invention, and 1 in the other embodiment, in relation to the total mass of the liquid crystal composition of the present invention. ~20% by mass, and in another embodiment, 1 to 10% by mass, and in still another embodiment, 3 to 10% by mass, and in still another embodiment, 4 to 7% by mass, and yet another In the embodiment, it is 1 to 5% by mass, and in still another embodiment, it is 5 to 10% by mass.

Further, the compound represented by the formula (XV-1) used in the liquid crystal composition of the present invention is specifically at least 1 selected from the group consisting of compounds represented by the formula (59.1) to the formula (59.4). Preferred are compounds containing a compound represented by the formula (59.2).

Alternatively, the compound represented by the above formula (XV) is preferably a compound represented by the formula (XV-2).

In the above formula (XV-2), R ¹⁵⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound to be combined is not particularly limited, and one or a combination of two or more is preferable in view of low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (XV-2) can be considered in terms of solubility at low temperature, transfer temperature, electrical reliability, birefringence, and the like. Make appropriate adjustments to the characteristics.

For example, the content of the compound represented by the above formula (XV-2) is 0.5 in consideration of the low-temperature solubility, the transfer temperature, the electrical reliability, the birefringence, and the like with respect to the total mass of the liquid crystal composition of the present invention. The mass% or more is preferably 20% by mass or less, preferably 1% by mass or more and 15% by mass or less, more preferably 1% by mass or less, and preferably 1% by mass or less.

Further, the compound represented by the formula (XV-2) used in the liquid crystal composition of the present invention is specifically at least 1 selected from the group consisting of compounds represented by the formula (60.1) to the formula (60.4). Preferred compounds are those containing a compound represented by the formula (60.2).

The liquid crystal composition of the invention of the present invention may further comprise A compound represented by the formula (XVI) having a structure similar to the above formula (M) is used as a palmitic agent.

In the above formula (XVI), R ¹⁶⁰ represents an alkyl group having 9 or 10 carbon atoms, X ¹⁶¹ to X ¹⁶³ represents a hydrogen atom or a fluorine atom, K ¹⁶⁰ represents a single bond or -CH ₂ CH ₂ -, and P ¹⁶⁰ represents 1 , 2, or 3.

The kind of the compound which can be combined is not particularly limited, and can be appropriately combined and used in accordance with desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one embodiment of the present invention. Or another embodiment of the present invention is two or more.

The content of the compound represented by the above formula (XVI) is 2.5% by mass or more based on the total mass of the liquid crystal composition of the present invention in consideration of low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The mass% or less is preferably 3% by mass or more and 15% by mass or less, and preferably 3% by mass or more and 10% by mass or less.

Further, the compound represented by the above formula (XVI) is specifically at least one compound selected from the group consisting of compounds represented by formula (62.1) to formula (62.4), and is represented by formula (62.1) and / or a compound represented by the formula (62.3) is preferred.

It is preferred to adjust the content of the compound represented by the above formula (62.1) in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, birefringence, etc., and the total amount of the compound relative to the liquid crystal composition of the present invention. The mass is preferably 0 to 40% by mass, preferably 1 to 35% by mass, preferably 1 to 30% by mass, and preferably 5 to 28% by mass.

The content of the compound represented by the above formula (62.3) can be adjusted in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, birefringence, etc., and the total amount of the compound relative to the liquid crystal composition of the present invention. The mass is preferably 0 to 40% by mass, preferably 1 to 35% by mass, preferably 1 to 30% by mass, and preferably 5 to 28% by mass.

The liquid crystal composition containing the compound represented by the above formula (i) and at least two compounds represented by the above formula (ii) further contains The compound represented by the above formula (3.3), the compound represented by the above formula (19.1), the compound represented by the above formula (41.2), the compound represented by the above formula (44.2), and the formula (45.2). In the case of the compound, the compound represented by the above formula (i), at least two compounds represented by the above formula (ii), the compound represented by the above formula (3.3), the compound represented by the above formula (19.1), and the above formula. The total content of the compound represented by the formula (41.2), the compound represented by the above formula (44.2), and the compound represented by the above formula (45.2) is preferably 30 to 60% by mass based on the total mass of the liquid crystal composition. 40 to 60% by mass is preferred, 45 to 55% by mass is more preferred, and 48 to 52% by mass is particularly preferred.

The liquid crystal composition containing the compound represented by the above formula (i) and at least two compounds represented by the above formula (ii) further contains two kinds of compounds represented by the above formula (IX-2-5) and In the case of the compound represented by the above formula (21.1), the compound represented by the above formula (i), at least two compounds represented by the above formula (ii), and 2 represented by the above formula (IX-2-5) The total content of the compound and the compound represented by the above formula (21.1) is preferably 25 to 55 mass%, more preferably 35 to 50 mass%, and 40 to 45, based on the total mass of the liquid crystal composition of the present invention. The mass % is better, and 42 to 44% by mass is particularly good.

The liquid crystal composition containing the compound represented by the above formula (i) and at least two compounds represented by the above formula (ii) further contains two kinds of compounds represented by the above formula (X-6) and the above formula. (45.2) In the case of the compound represented by the above formula (i), at least two compounds represented by the above formula (ii), and two compounds represented by the above formula (X-6), and Total content of the compound represented by the above formula (45.2) The total mass of the liquid crystal composition of the present invention is preferably 40 to 70% by mass, more preferably 45 to 65% by mass, more preferably 50 to 60% by mass, and particularly preferably 53 to 57% by mass.

The liquid crystal composition containing the compound represented by the above formula (i) and at least two compounds represented by the above formula (ii) further contains two kinds of compounds represented by the above formula (X-6) and the above formula. (5.3) The compound represented by the above formula (45.2), the compound represented by the above formula (i), at least two compounds represented by the above formula (ii), and the above formula (X) -6) The total content of the two compounds represented, the compound represented by the above formula (5.3), and the compound represented by the above formula (45.2) is 45 to 75 by mass based on the total mass of the liquid crystal composition of the present invention. % is better, 50 to 65 mass% is preferred, 55 to 65 mass% is better, and 58 to 62 mass% is particularly good.

The liquid crystal composition containing at least two compounds represented by the above formula (i) and the compound represented by the above formula (ii) further contains two kinds of compounds represented by the above formula (XIV-2-4) and In the case of the compound represented by the above formula (36.2), the compound represented by the above formula (i), at least two compounds represented by the above formula (ii), and 2 represented by the above formula (XIV-2-4) The total content of the compound and the compound represented by the above formula (36.2) is preferably 20 to 45% by mass, preferably 30 to 40% by mass, and 33 to 38% by mass based on the total mass of the liquid crystal composition of the present invention. % is better.

The liquid crystal composition containing the compound represented by the above formula (i) and at least two compounds represented by the above formula (ii) further contains the three compounds represented by the above formula (XI-1) and the above formula. (6.6) In the case of the compound represented by the above formula (i), at least two compounds represented by the above formula (ii), three compounds represented by the above formula (XI-1), and the above formula (6.6) The total content of the compound represented by the liquid crystal composition of the present invention is preferably 30 to 60% by mass, preferably 40 to 60% by mass, more preferably 45 to 55% by mass, and 47 to 52% by mass. The mass % is particularly good.

The liquid crystal composition containing the compound represented by the above formula (i) and at least two compounds represented by the above formula (ii) further contains a compound represented by the above formula (44.2) and represented by the above formula (28.5). In the case of the compound represented by the above formula (i), at least two compounds represented by the above formula (ii), a compound represented by the above formula (44.2), and a compound represented by the above formula (28.5) The total content is preferably 40 to 70% by mass, more preferably 45 to 65% by mass, more preferably 50 to 60% by mass, and particularly preferably 53 to 57% by mass based on the total mass of the liquid crystal composition of the present invention.

The liquid crystal composition containing the compound represented by the above formula (i) and at least two compounds represented by the above formula (ii) further contains two kinds of compounds represented by the above formula (X-6) and the above formula. (28.5) In the case of the compound represented by the above formula (41.2), the compound represented by the above formula (45.2), and the compound represented by the above formula (54.1), the compound represented by the above formula (i) At least two compounds represented by the above formula (ii), two compounds represented by the above formula (X-6), a compound represented by the above formula (28.5), and a compound represented by the above formula (41.2), The total content of the compound represented by the above formula (45.2) and the compound represented by the above formula (54.1) is preferably 40 to 70% by mass, and 45 to 65% by mass based on the total mass of the liquid crystal composition of the present invention. Preferably, 50 to 60% by mass For better, 52 to 56% by mass is particularly good.

The liquid crystal composition of the present invention is preferably a compound having a structure in which an oxygen atom having a peracid (-CO-OO-) structure or the like is bonded to each other in the molecule.

When the reliability and long-term stability of the liquid crystal composition are important, the content of the compound having a carbonyl group is preferably 5% by mass or less based on the total mass of the composition, and preferably 3% by mass or less, and preferably 1% by mass or less. More preferably, it is not optimally contained.

When the stability of the UV irradiation is emphasized, the content of the chlorine atom-substituted compound is preferably 15% by mass or less based on the total mass of the composition, preferably 10% by mass or less, more preferably 5% by mass or less, and substantially Not included is the best.

It is preferable to increase the content of the compound having a ring structure of all 6 members in the molecule, and the content of the compound having a ring structure of 6 members in the molecule is preferably 80% by mass or more based on the total mass of the composition, and 90 mass%. It is more preferable that it is 95% by mass or more, and it is preferable that the liquid crystal composition is substantially constituted by a compound having a ring structure of all of the molecules in a molecule of only 6 members.

In order to suppress deterioration due to oxidation of the liquid crystal composition, it is preferable to reduce the content of the compound having a cyclohexylene group as a ring structure, and the content of the compound having a cyclohexylene group is 10% by mass or less based on the total mass of the composition. Preferably, it is preferably 5 mass% or less, and substantially no content is more preferable.

In the case of improvement in viscosity and improvement of Tni, hydrogen atoms may be substituted by halogen and reduce 2-methylbenzene-1,4- in the molecule. The content of the compound of the diradical is preferably such that the content of the compound having the 2-methylbenzene-1,4-diyl group in the molecule is preferably 10% by mass or less, and 5% by mass or less based on the total mass of the composition. Preferably, it is preferably not contained.

The compound contained in the composition of the first embodiment of the present invention has an alkenyl group in a side chain, and in the case where the alkenyl group is bonded to cyclohexane, the number of carbon atoms of the alkenyl group is preferably 2 to 5, and In the case where the above alkenyl group is bonded to benzene, the number of carbon atoms of the alkenyl group is preferably 4 to 5, and the unsaturated bond of the alkenyl group is not directly bonded to benzene.

In the liquid crystal composition of the present invention, a polymerizable compound may be contained in order to produce a liquid crystal display element such as a PS mode, a lateral electric field type PSA mode or a lateral electric field type PSVA mode. The polymerizable compound which can be used is a photopolymerizable monomer which is polymerized by an energy ray such as light, and the structure includes, for example, a biphenyl derivative, a biphenyl derivative, or the like, which has a six-membered ring. A polymerizable compound of a liquid crystal skeleton or the like. More specifically, a difunctional monomer represented by the formula (XX) is preferred.

In the above formula (XX), X ²⁰¹ and X ²⁰² each independently represent a hydrogen atom or a methyl group, and Sp ²⁰¹ and Sp ²⁰² each independently represent a single bond, an alkylene group having 1 to 8 carbon atoms or -O-(CH _{2 ). s} - (wherein, s represents an integer of 2 to 7, the oxygen atom is bonded to the aromatic ring), and Z ²⁰¹ represents -OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, -CF ₂ O-, -OCF ₂ -, -CH ₂ CH ₂ -, -CF ₂ CF ₂ -, -CH=CH-COO-, -CH=CH-OCO-, -COO-CH=CH-, -OCO- CH=CH-, -COO-CH ₂ CH ₂ -, -OCO-CH ₂ CH ₂ -, -CH ₂ CH ₂ -COO-, -CH ₂ CH ₂ -OCO-, -COO-CH ₂ -, -OCO -CH ₂ -, -CH ₂ -COO-, -CH ₂ -OCO-, -CY ¹ =CY ² - (wherein, Y ¹ and Y ² each independently represent a fluorine atom or a hydrogen atom), -C≡C- Or a single bond, M ²⁰¹ represents a 1,4-phenylene group, a trans-1,4-cyclohexylene group or a single bond, and any hydrogen atom of all 1,4-phenylene groups in the formula may be substituted by a fluorine atom. .

X ²⁰¹ and X ²⁰² are each preferably a diacrylate derivative each having a hydrogen atom and a dimethacrylate derivative having a methyl group, and one of them may represent a hydrogen atom and the other may be a hydrogen atom. The compound represents a methyl group. The polymerization rate of these compounds is the fastest among the diacrylate derivatives, the slower of the dimethacrylate derivative, and the asymmetric compound among them, and a preferred aspect can be used according to the use thereof. Among the PSA display elements, dimethacrylate derivatives are particularly preferred.

Sp ²⁰¹ and Sp ²⁰² each independently represent a single bond, an alkyl group having 1 to 8 carbon atoms or -O-(CH ₂ ) _s -, and at least one of the PSA display elements is preferably a single bond, and represents a single bond. It is preferred that the compound or one of them represents a single bond and the other represents an alkylene group having 1 to 8 carbon atoms or -O-(CH ₂ ) _s -. In this case, an alkyl group having 1 to 4 carbon atoms is preferred, and s is preferably 1 to 4.

Z ²⁰¹ represents -OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, -CF ₂ O-, -OCF ₂ -, -CH ₂ CH ₂ -, -CF ₂ CF ₂ -, or a single bond Preferably, -COO-, -OCO-, or a single bond is preferred, and a single bond is particularly preferred.

Any hydrogen atom of M ²⁰¹ may be substituted by a fluorine atom and represents a 1,4-phenylene group, a trans-1,4-cyclohexylene group, or a single bond, preferably a 1,4-phenylene group or a single bond. M ²⁰¹ represents a ring structure other than a single bond, Z ²⁰¹ is preferably a bonding group other than a single bond, and M ²⁰¹ is a single bond, and Z ²⁰¹ is preferably a single bond.

From such a viewpoint, in the general formula (XX), the ring structure between Sp ²⁰¹ and Sp ²⁰² is specifically a structure described below.

In the above formula (XX), when M ²⁰¹ represents a single bond and the ring structure is formed by two rings, the following formula (XXa-1) to formula (XXa-5) are preferred, and the formula (XX) is preferred. XXa-1)~(XXa-3) is preferred, and the formula (XXa-1) is particularly preferred.

In the above formula (XXa-1) to formula (XXa-5), both ends are bonded to Sp ²⁰¹ or Sp ²⁰² .

Since the alignment control ability after polymerization of the polymerizable compound containing these skeletons is most suitable for a PSA type liquid crystal display element, and a good alignment state can be obtained, display unevenness can be suppressed or all of them can be prevented from occurring.

According to the above, the polymerizable single system is preferably at least one compound selected from the group consisting of the compounds represented by the general formulae (XX-1) to (XX-4), wherein the compound (XX- 2) The compound represented is preferred.

In the above formula (XX-3) and formula (XX-4), Sp ²⁰ represents an alkylene group having 2 to 5 carbon atoms.

In the case where a monomer is added to the liquid crystal composition of the present invention, polymerization may be carried out in the case where the polymerization initiator is not present, but a polymerization initiator may be contained in order to promote polymerization. Examples of the polymerization initiator include benzoin ethers, benzophenones, acetophenones, benzyl ketals, and mercaptophosphine oxides.

The liquid crystal composition of the present invention may further contain a compound represented by the formula (Q) as an antioxidant.

In the above formula (Q), R ^Q represents a linear alkyl group or a branched alkyl group having 1 to 22 carbon atoms, and one or two or more CH ₂ groups in the alkyl group may not directly abut the oxygen atom. The mode is -O-, -CH=CH-, -CO-, -OCO-, -COO-, -C≡C-, -CF ₂ O-, -OCF ₂ -, and M ^Q represents trans-1 , 4-cyclohexylene, 1,4-phenylene, or a single bond.

R ^Q represents a linear alkyl group or a branched alkyl group having 1 to 22 carbon atoms, and one or two or more CH ₂ groups in the alkyl group may be -O- in such a manner that the oxygen atoms are not directly adjacent to each other. -CH=CH-, -CO-, -OCO-, -COO-, -C≡C-, -CF ₂ O-, -OCF ₂ -Substitution, linear alkyl group having 1 to 20 carbon atoms, linear Alkoxy, 1 CH ₂ group substituted with -OCO- or -COO- linear alkyl, branched alkyl, branched alkoxy, 1 CH ₂ group substituted with -OCO- or -COO - a branched alkyl group is preferred, a linear alkyl group having 1 to 10 carbon atoms, a linear alkyl group in which 1 CH ₂ group is substituted with -OCO- or -COO-, a branched alkyl group, a branched alkyl group More preferably, an oxy group and a branched alkyl group in which one CH ₂ group is substituted with -OCO- or -COO- is preferred.

M ^Q represents a trans-1,4-cyclohexylene group, a 1,4-phenylene group or a single bond, and a trans-1,4-cyclohexylene group or a 1,4-phenylene group is preferred.

The compound represented by the above formula (Q) is from the following At least one compound selected from the group consisting of compounds represented by the formula (Q-a) to the formula (Q-d) is preferred, and a compound represented by the formula (Q-a) and/or (Q-c) is preferred.

In the above formula, R ^Q1 is preferably a linear alkyl group or a branched alkyl group having 1 to 10 carbon atoms, and R ^Q2 is preferably a linear alkyl group or a branched alkyl group having 1 to 20 carbon atoms, and R ^{Q3 is} preferable. It is preferably a linear alkyl group, a branched alkyl group, a linear alkoxy group or a branched alkoxy group having 1 to 8 carbon atoms, and the L ^Q is a linear alkyl group or a branched chain having 1 to 8 carbon atoms. Alkyl is preferred. Among these, the compound represented by the formula (Q) is preferably a compound represented by the following formula (Qa-1) and/or (Qc-1).

In the liquid crystal composition of the present invention, one or two kinds of compounds represented by the above formula (Q) are preferred, and one to five kinds are more preferably contained, and the content thereof is relative to the total of the liquid crystal composition of the present invention. The mass is preferably 0.001 to 1% by mass, more preferably 0.001 to 0.1% by mass, and most preferably 0.001 to 0.05% by mass.

<Liquid crystal display element>

The liquid crystal composition containing the polymerizable compound of the present invention can be polymerized by irradiating ultraviolet rays with the polymerizable compound contained therein to impart liquid crystal alignment energy, and can be used for controlling light penetration by utilizing birefringence of the liquid crystal composition. A light-transmitting liquid crystal display element. As a liquid crystal display element, for ECB-LCD, VA-LCD, VA-IPS-LCD, FFS-LCD, AM-LCD (active matrix liquid crystal display element), TN (nematic liquid crystal display element), STN-LCD (super A twisted nematic liquid crystal display element), an OCB-LCD and an IPS-LCD (in-plane switching liquid crystal display element) are useful, and are particularly useful for an AM-LCD, and can be used for a transmissive or reflective liquid crystal display element.

Two substrates for liquid crystal cells of a liquid crystal display element, A transparent material having flexibility such as glass or plastic may be used, and on the other hand, an opaque material such as tantalum may be used. The transparent substrate having the transparent electrode layer can be obtained by, for example, sputtering indium tin oxide (ITO) on a transparent substrate such as a glass plate.

The color filter can be produced, for example, by a pigment dispersion method, a printing method, a plating method, a dyeing method, or the like. When a method of producing a color filter by a pigment dispersion method is described as an example, a curable coloring composition for a color filter is applied onto the transparent substrate, patterned, and then heated or lighted. It is hardened by irradiation. By performing this step for each of three colors of red, green, and blue, a pixel portion for a color filter can be produced. Further, a pixel electrode provided with an active element such as a TFT or a thin film diode may be provided on the substrate.

The substrate is opposed to each other such that the transparent electrode layer is inside. At this time, the interval between the substrates may be adjusted via the spacer. In this case, it is preferable to adjust the thickness of the obtained light control layer to be 1 to 100 μm. It is more preferable that 1.5 to 10 μm is used, and in the case of using a polarizing plate, it is preferable to adjust the product of the refractive index anisotropy Δn of the liquid crystal and the cell thickness d in such a manner that the contrast becomes maximum. Further, in the case of two polarizing plates, the polarization axes of the respective polarizing plates may be adjusted so that the viewing angle or the contrast becomes good. Further, a retardation film for expanding the viewing angle can also be used. The spacer may, for example, be a columnar spacer made of glass particles, plastic particles, alumina particles, or a photoresist material. Then, a sealant such as an epoxy thermosetting composition is screen-printed on the substrate in such a manner that a liquid crystal injection port is provided, and the substrates are bonded to each other, heated, and the sealant is thermally cured.

A method of sandwiching a liquid crystal composition containing a polymerizable compound between two substrates can be carried out by a usual vacuum injection method, ODF method, or the like. However, in the vacuum injection method, no dripping marks are generated, and instead, there is a problem that the injection marks remain. In the invention of the present invention, it can be more suitably used for a display element manufactured by the ODF method. In the manufacturing process of the liquid crystal display element of the ODF method, the epoxy-based photothermal heat is formed on the substrate of any one of the back sheet or the front panel by a sealant such as hardenability, and is formed into a closed loop earth bank shape, wherein After dropping a predetermined amount of the liquid crystal composition under degassing, the front panel and the back sheet were bonded to each other to manufacture a liquid crystal display element. The liquid crystal composition of the present invention can be suitably used because it can stably carry out the dropping of the liquid crystal composition in the ODF step.

A method of polymerizing a polymerizable compound, in order to obtain a good alignment property of a liquid crystal, and an appropriate polymerization rate is desired, by irradiating an active energy ray such as an ultraviolet ray or an electron beam in a single or in combination or sequentially. The method of polymerization is preferred. In the case of using ultraviolet rays, a polarized light source or a non-polarized light source may be used. In the case where the liquid crystal composition containing the polymerizable compound is polymerized in a state of being sandwiched between two substrates, at least the substrate on the irradiation surface side is provided with appropriate transparency with respect to the active energy ray. Further, after the light irradiation, a specific portion is polymerized by using a mask, and the alignment state of the unpolymerized portion may be changed by changing conditions such as an electric field, a magnetic field, or a temperature, and the active energy ray may be further irradiated to be polymerized. s method. In particular, when ultraviolet exposure is performed, it is preferred to apply an alternating electric field to the liquid crystal composition containing the polymerizable compound while performing ultraviolet exposure. The applied alternating electric field is preferably an alternating current with a frequency of 10 Hz to 10 kHz, and the frequency is 60 Hz to 10 kHz is preferred, and the voltage is selected depending on the pretilt angle desired for the liquid crystal display element. That is, the pretilt angle of the liquid crystal display element can be controlled by the applied voltage. In the liquid crystal display element of the transverse electric field type MVA mode, it is preferable to control the pretilt angle to 80 to 89.9 degrees from the viewpoint of alignment stability and contrast.

The temperature at the time of irradiation is preferably within a temperature range capable of maintaining the liquid crystal state of the liquid crystal composition of the present invention. It is preferred to carry out the polymerization at a temperature close to room temperature, that is, at a temperature of typically 15 to 35 °C. A metal halide lamp, a high pressure mercury lamp, an ultrahigh pressure mercury lamp, or the like can be used as the lamp for generating ultraviolet rays. Further, the wavelength of the ultraviolet ray to be irradiated is preferably an ultraviolet ray which is irradiated in a wavelength region of the absorption wavelength region of the non-liquid crystal composition, and it is preferably used by blocking the ultraviolet ray as needed. The intensity of the ultraviolet ray to be irradiated is preferably from 0.1 mW/cm ² to 100 W/cm ^{2 , and more} preferably from 2 mW/cm ² to 50 W/cm ² . The energy of the ultraviolet ray to be irradiated can be appropriately adjusted, preferably from 10 mJ/cm ² to 500 J/cm ^{2 , and} preferably from 100 mJ/cm ² to 200 J/cm ² . The intensity can also be changed when ultraviolet rays are irradiated. The time for irradiating the ultraviolet rays can be appropriately selected depending on the intensity of the ultraviolet rays to be irradiated, preferably from 10 seconds to 3600 seconds, and preferably from 10 seconds to 600 seconds.

The liquid crystal display element using the liquid crystal composition of the present invention is useful for both high-speed response and suppression of display failure, and is particularly useful for active matrix driving liquid crystal display elements, and can be applied to VA mode, PSVA mode, and PSA mode. , IPS (in-plane switching) mode, VA-IPS mode, FFS (edge electric field switching) mode or liquid crystal display element for ECB mode.

Hereinafter, the liquid crystal of the present invention will be described with reference to the drawings. Suitable embodiments of the display are described in detail.

Fig. 1 is a cross-sectional view showing a liquid crystal display element including a two-piece substrate facing each other, a sealing material provided between the substrates, and a liquid crystal sealed in a sealing region surrounding the sealing material.

Specifically, a specific aspect of the liquid crystal display device in which the TFT layer 102 and the pixel electrode 103 are provided on the first substrate 100 is provided, and the passivation film 104 and the first alignment film are provided from above. a backing plate of 105; a black matrix 202, a color filter 203, a planarizing film (protective layer) 201, and a transparent electrode 204 are provided on the second substrate 200, and a second alignment film 205 is provided from above, and the foregoing a front plate facing the back plate; a sealing member 301 disposed between the substrates; and a liquid crystal layer 303 sealed in a sealing region surrounding the sealing member, and a protrusion (column) is provided on a surface of the substrate where the sealing member 301 is in contact Spacers 302, 304.

When the first substrate or the second substrate is substantially transparent, the material is not particularly limited, and glass, ceramics, plastic, or the like can be used. The plastic substrate may be a cellulose derivative such as cellulose, triacetyl cellulose or diethyl phthalocyanine; a polyester such as a polycycloolefin derivative, polyethylene phthalate or polyethylene naphthalate; Polyolefins such as polypropylene, polyethylene, etc.; polycarbonate, polyvinyl alcohol, polyvinyl chloride, polyvinylidene chloride, polyamide, polyimine, polyamidamine, polystyrene, polyacrylic acid Ester, polymethyl methacrylate, polyether oxime, polyarylate, and inorganic-organic composite materials such as glass fiber-epoxy resin, glass fiber-acrylic resin, and the like.

In addition, when a plastic substrate is used, a barrier film is preferably provided. The function of the barrier film is to reduce the moisture permeability and lift liquid of the plastic substrate. The reliability of the electrical characteristics of the crystalline display element. Each of the barrier films is not particularly limited as long as it has high transparency and low water vapor permeability, and is generally used by using an inorganic material such as cerium oxide and using vapor deposition and sputtering, and chemical vapor deposition (CVD). The film formed by the method).

In the present invention, the first substrate or the second substrate may be made of the same material or different materials, and is not particularly limited. When a glass substrate is used, it is preferable to produce a liquid crystal display element having excellent heat resistance and dimensional stability. Further, in the case of a plastic substrate, it is preferably a production method using a roll forming method and is suitable for weight reduction or flexibility. Further, in order to impart flatness and heat resistance, good results can be obtained when a plastic substrate and a glass substrate are combined.

Further, in the embodiment to be described later, the substrate is used as the material of the first substrate 100 or the second substrate 200.

The TFT substrate 102 and the pixel electrode 103 are provided on the first substrate 100 in the back sheet. These are manufactured in the usual array steps. A passivation film 104 and a first alignment film 105 are provided thereon to obtain a back sheet.

The passivation film 104 (also referred to as an inorganic protective film) is a film for protecting the TFT layer, and is usually formed by a chemical vapor phase epitaxy (CVD) technique or the like to form a nitride film (SiNx), an oxide film (SiOx), or the like.

Further, the first alignment film 105 has a function of aligning the liquid crystal, and a polymer material such as a polyimide is usually used. As the coating liquid, an alignment agent solution composed of a polymer material and a solvent can be used. The alignment film is coated in the field of sealing because of the possibility of hindering the adhesion to the sealing material. For the coating, a printing method such as a flexographic printing method, a droplet discharge method such as an inkjet method can be used. The coated alignment agent solution is After the solvent is evaporated by temporary drying, it is cross-linked and hardened by baking. Then, in order to visualize the alignment function, alignment processing is performed.

The alignment treatment is usually performed by a rubbing method. By using a rubbing cloth composed of fibers such as ruthenium, the polymer film formed as described above is rubbed in one direction to generate liquid crystal alignment energy.

Also, there is a method of using the optical alignment. The photo-alignment method generates a aligning energy by irradiating a polarized light onto an alignment film containing a photoreceptive organic material, and the rubbing method does not cause scratches and dust on the substrate. An example of the organic material in the photo-alignment method is a material containing a dichroic dye. The dichroic dye can be used to have a molecular alignment induction or isomerization reaction (eg, azophenyl group) caused by the Weiger effect of photodichromaticity, and a dimerization reaction (eg, cassia a photocrosslinking reaction (for example, a benzophenone group) or a photodecomposition reaction (for example, a polyfluorenylene group) capable of generating a photoreactive group derived from the origin of liquid crystal alignment energy (hereinafter, simply referred to as Light-aligned basis). The applied alignment agent solution is obtained by evaporating a solvent by temporary drying, and by irradiating light having any deviation (polarization), an alignment film having an alignment energy in an arbitrary direction can be obtained.

The front substrate of one of the second substrates 200 is provided with a black matrix 202, a color filter 203, a planarizing film 201, a transparent electrode 204, and a second alignment film 205.

The black matrix 202 is produced by, for example, a pigment dispersion method. Specifically, on the second substrate 200 provided with the barrier film 201, a colored resin liquid obtained by uniformly dispersing a black colorant for forming a black matrix is applied to form a colored layer. Then, the colored layer is baked to harden it. The photoresist is coated thereon and pre-baked. Exposing the photoresist through the mask pattern Thereafter, development is performed to pattern the colored layer. Then, the photoresist layer and the baked colored layer are peeled off to complete the black matrix 202.

Alternatively, a photoresist type pigment dispersion liquid can also be used. In this case, after the photoresist type pigment dispersion liquid is applied and prebaked, after exposure through a mask pattern, development is performed to pattern the colored layer. Then, the photoresist layer and the baked colored layer are peeled off to complete the black matrix 202.

The color filter 203 is produced by a pigment dispersion method, a plating method, a printing method, a dyeing method, or the like. In the case of the pigment dispersion method, a color resin liquid in which a pigment (for example, red) is uniformly dispersed is applied onto the second substrate 200, and after baking hardening, a photoresist is applied thereon and pre-baked. After exposure through the mask pattern, the photoresist is developed and patterned. The (red) color filter 203 is then completed by stripping the photoresist layer and performing rebaking. The color order of the production is not particularly limited. The green color filter 203 and the blue color filter 203 are formed in the same manner.

The transparent electrode 204 is provided on the color filter 203 (a protective layer (201) for planarizing the surface is provided on the color filter 203 as needed). The transparent electrode 204 is preferably a high transmittance, and a small electrical resistance is preferred. The transparent electrode 204 is formed of an oxide film of ITO or the like by a sputtering method or the like.

Further, in order to protect the transparent electrode 204, a passivation film is provided on the transparent electrode 204.

The second alignment film 205 is the same as the first alignment film 105 described above.

Although the above description of the back sheet and the front panel used in the present invention has been described above, the present invention is not limited to this specific aspect, and can be freely changed in accordance with the desired aspect of the liquid crystal display element. .

The shape of the columnar spacer is not particularly limited, and the horizontal cross section may be various shapes such as a circular shape such as a circular shape or a quadrangular shape. However, considering the misalignment margin at the step, the horizontal cross section is formed. It is especially good for round or regular polygons. Further, the shape of the protrusion is preferably a truncated cone or a truncated cone.

The material of the columnar spacer is not particularly limited as long as it is an organic solvent that is not dissolved in the sealing material or the sealing material, or is not dissolved in the liquid crystal, and is synthesized from the viewpoint of processing and weight reduction. A resin (curable resin) is preferred. On the other hand, the protrusions can be provided on the surface where the sealing material on the first substrate is in contact with the droplet discharge method by a photolithography method. For this reason, it is preferred to use a photocurable resin suitable for the photolithography method and the liquid droplet discharging method.

The case where the above-mentioned columnar spacer is obtained by photolithography will be described as an example. 2 is a view showing an exposure processing procedure using a pattern for forming a columnar spacer formed on a black matrix as a mask pattern.

On the transparent electrode 204 of the front panel, a resin liquid for forming a columnar spacer (without a colorant) is applied. Then, the resin layer 402 is baked to be hardened. The photoresist is coated thereon and pre-baked. After exposure through the mask pattern 401, the photoresist is developed to pattern the resin layer. Then, the photoresist layer and the baked resin layer are peeled off to complete the columnar spacers (302, 304 in Fig. 1).

The position at which the column spacers are formed can be determined by the mask pattern to determine the desired position. Therefore, both the sealing field of the liquid crystal display element and the outside of the sealing field (sealing material coating portion) can be simultaneously produced. Further, the columnar spacers are preferably formed in such a manner as to be on the black matrix without lowering the quality of the sealing field. The columnar spacers thus produced by photolithography are referred to as column spacers or light spacers.

As the material of the spacer, a mixture of a negative-type water-soluble resin such as a PVA-carbazole photosensitive resin, a polyfunctional acrylic monomer, an acrylic copolymer, a triazole-based initiator, or the like can be used. Alternatively, there is a method of using a coloring resin in which a coloring agent is dispersed in a polyimide resin. In the present invention, the spacer is not particularly limited, and a spacer can be obtained by a known material in accordance with the phase of the liquid crystal and the sealing material.

In this manner, after the columnar spacer is provided on the surface of the sealing field on the front panel, a sealing material (301 in FIG. 1) is applied to the surface where the sealing material of the backing plate meets.

The material of the sealing material is not particularly limited, and a curable resin composition obtained by adding a polymerization initiator to an epoxy-based or acrylic-based photocurable, thermosetting, or photo-curable resin can be used. Further, in order to control moisture permeability, elastic modulus, viscosity, and the like, a filler composed of an inorganic substance and an organic substance is added. The shape of these fillers is not particularly limited, and is spherical, fibrous, amorphous, and the like. Further, in order to control the cell gap well, a spherical and fibrous spacer material having a monodisperse diameter can be mixed, and in order to further strengthen the adhesion to the substrate, a fibrous substance which is easily entangled with the protrusion on the substrate can be mixed. The diameter of the fibrous material used at this time is expected to be 1/5 to 1/10 or less of the cell gap. Left and right, the length of the fibrous material is expected to be shorter than the seal coating width.

In addition, the material of the fibrous material is not particularly limited as long as it can obtain a predetermined shape, and synthetic fibers such as cellulose, polyamide, and polyester, and inorganic materials such as glass and carbon can be appropriately selected.

The method of applying the sealing material includes a printing method and a dispersion method, but it is preferably a dispersion method in which the amount of the sealing material used is small. The coating position of the sealing material is usually above the black matrix so as not to adversely affect the sealing field. In order to form the liquid crystal dropping field of the following steps (so that the liquid crystal does not leak), the sealing material coating shape is formed into a closed loop shape.

The liquid crystal was dropped in a closed loop shape (sealed area) of the panel before the application of the aforementioned sealing material. Usually a dispenser is used. In order to make the amount of the dropped liquid crystal coincide with the volume of the liquid crystal cell, the volume which multiplies the height of the columnar spacer and the sealed coated area is substantially the same amount. However, when the amount of liquid crystal dropped is appropriately adjusted in order to optimize the liquid crystal leakage and the display characteristics in the cell bonding step, the liquid crystal dropping position can be dispersed.

Next, the back sheet is bonded to the front panel to which the sealing material is applied and the liquid crystal is dropped. Specifically, the front panel and the back sheet are adsorbed to a platform having a mechanism capable of adsorbing a substrate such as an electrostatic chuck, and the second alignment film of the front panel faces the first alignment film of the back sheet, and It is disposed at a position (distance) where the sealing material does not contact the other substrate. In this state, the inside of the system is depressurized. After the decompression is completed, confirm the bonding position of the front panel and the back panel and adjust the position of the two substrates at the same time (alignment operation). If the adjustment of the bonding position is over, let the substrate be close to the sealing material on the front panel. The location that meets the backplane. In this state, an inert gas is filled into the inside of the system, and the decompression is gradually opened while returning to normal pressure. At this time, the front panel and the backing plate are bonded together by atmospheric pressure, and a cell gap is formed at the height position of the columnar spacer. In this state, the sealing material is irradiated with ultraviolet rays to harden the sealing material to form a liquid crystal cell. Then, depending on the situation, the heating step is increased to promote the hardening of the sealing material. In order to improve the adhesion enhancement and electrical property reliability of the sealing material, the heating step is often increased.

[Examples]

The following examples are given to further illustrate the invention, but the invention is not limited to the examples. Moreover, "%" in the composition of the following examples and comparative examples means "% by mass".

In the examples, the measured characteristics are as follows.

Tni: nematic phase-isotropic liquid phase transfer temperature (°C)

Δn: refractive index anisotropy of 298K (alias: birefringence)

△ ε: dielectric coefficient anisotropy of 298K

η: viscosity of 293K (mPa.s)

Γ1: 298K rotational viscosity (mPa.s)

VHR: Voltage holding ratio (%) of 323K at a frequency of 60 Hz and a voltage of 5 V

After the heat resistance test, VHR: The TEG (test element group) for evaluating the optical optical characteristics of the liquid crystal composition sample was held in a thermostat at 120 ° C for 1.5 hours, and then measured under the same conditions as the above-described VHR measurement method.

Afterimage:

The residual image evaluation of the liquid crystal display element allows the prescribed fixed pattern to be displayed After an arbitrary test time is displayed in the display area, the test time of the image of the fixed pattern at the time of uniform display of the full screen is reached to an unacceptable image level.

1) The test time referred to here indicates the display time of the fixed pattern, and the longer the time, the more the occurrence of the afterimage is suppressed and the high performance is exhibited.

2) The image level of the image that cannot be tolerated refers to the level of the afterimage of the unqualified image observed by the pass or fail.

Drop marks:

The evaluation of the drip marks of the liquid crystal display was carried out by visual observation using the following five stages to evaluate the dripping marks floating in the white in the case of full black display.

5: no dripping marks (excellent)

4: There are very few dripping marks but acceptable levels (good)

3: There is a little bit of drop mark, the boundary level of the pass or fail judgment (conditionally available)

2: There are dripping marks, unacceptable levels (not available)

1: There are dripping marks, quite rough (evil)

Process suitability:

The process suitability is based on the constant volume measurement pump in the ODF process. It is measured every time for every 100pL of "0~100 times, 101~200 times, 201~300 times, ...." and every 100 drops. The quality of the liquid crystals dropped 100 times, and the quality deviation was evaluated by the number of drops which reached a very unsuitable ODF process.

The more the number of drops, the more it can be dripped stably over a long period of time, which means that the process is highly suitable.

Low temperature solubility:

The low-temperature solubility evaluation was carried out by modulating a liquid crystal composition, and weighing 1 g of a liquid crystal composition in a 2 mL sample bottle. In the temperature-controlled test tank, the following operation state was set to -20 ° C (for 2 hours). →→temperature (0.1°C/min)→0°C (for 2 hours)→temperature (0.1°C/min)→20°C (for 1 hour)→cooling (-0.1°C/min)→0°C (keep 2 hours) → cooling (-0.1 ° C / min) → -20 ° C" as a cycle and continuous temperature change, to visually observe the occurrence of precipitates from the liquid crystal composition, and measure the test time when the precipitate was observed .

The longer the test time, the longer the stability and the long-term retention of the liquid crystal phase, and the low-temperature solubility is good.

Volatile/manufacturing device contamination:

The volatility evaluation of the liquid crystal material was performed by visual observation of the foaming of the liquid crystal material while irradiating with a stroboscope while operating the vacuum agitating defoaming mixer. Specifically, 0.75 kg of a liquid crystal composition and a degassing of 10 kPa were placed in a special container of a vacuum stirring defoaming mixer having a capacity of 2.0 L, and the vacuum stirring was performed at a revolution speed of 20 S ^-1 and a rotation speed of 10 S ^{-1 .} The bubble mixer measures the time until foaming starts.

The time until the start of foaming is less likely to be volatilized as it grows longer, and the possibility of contamination of the manufacturing apparatus is low, so that it is high in performance.

(Examples 1 to 3)

The composition shown in Table 1 was prepared, and an IPS type liquid crystal display having the structure shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and the liquid crystal display are shown in Table 2.

(Comparative Example 1)

Does not contain the compound represented by the above formula (ii), and modulates the table shown in Table 1. The composition shown is an IPS type liquid crystal display having the structure shown in Figs. 1 and 2 . The evaluation results of the obtained composition and the liquid crystal display are shown in Table 2.

The composition prepared in Example 1 was subjected to long-term continuous and stable dropping in the ODF process as compared with the composition prepared in Comparative Example 1, and was also excellent in solubility at low temperatures. Further, in the liquid crystal display produced in Example 1, the residual image system was suppressed as compared with the liquid crystal display produced in Comparative Example 1.

(Examples 4 to 7)

The composition shown in Table 3 was prepared, and an IPS type liquid crystal display having the structure shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and the liquid crystal display are shown in Table 4.

(Examples 8 to 11)

The composition shown in Table 5 was prepared, and an IPS type liquid crystal display having the structure shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and the liquid crystal display are shown in Table 6.

(Examples 12 to 15)

The composition shown in Table 7 was prepared, and an IPS type liquid crystal display having the structure shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and the liquid crystal display are shown in Table 8.

(Examples 16 to 19)

The composition shown in Table 9 was prepared, and an IPS type liquid crystal display having the structure shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and the liquid crystal display are shown in Table 10.

(Examples 20 to 23)

The composition shown in Table 11 was prepared, and an IPS type liquid crystal display having the structure shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and liquid crystal display are shown in Table 12.

(Examples 24 to 27)

The composition shown in Table 13 was prepared, and an IPS type liquid crystal display having the structure shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and liquid crystal display are shown in Table 14.

(Examples 28 to 31)

The composition shown in Table 15 was prepared, and an IPS type liquid crystal display having the structure shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and the liquid crystal display are shown in Table 16.

(Examples 32 to 35)

The composition shown in Table 17 was prepared, and an IPS type liquid crystal display having the structure shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and liquid crystal display are shown in Table 18.

(Examples 36 to 39)

The composition shown in Table 19 was prepared, and an IPS type liquid crystal display having the structure shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and liquid crystal display are shown in Table 20.

(Examples 40 to 43)

The composition shown in Table 21 was prepared, and an IPS type liquid crystal display having the structure shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and the liquid crystal display are shown in Table 22.

(Examples 44 to 47)

The composition shown in Table 23 was prepared, and an IPS type liquid crystal display having the structure shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and liquid crystal display are shown in Table 24.

(Examples 48 to 51)

The composition shown in Table 25 was prepared, and an IPS type liquid crystal display having the structure shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and liquid crystal display are shown in Table 26.

(Examples 52 to 55)

The composition shown in Table 27 was prepared, and an IPS type liquid crystal display having the structure shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and liquid crystal display are shown in Table 28.

(Examples 56 to 59)

The composition shown in Table 29 was prepared, and an IPS type liquid crystal display having the structure shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and liquid crystal display are shown in Table 30.

(Examples 60 to 63)

The composition shown in Table 31 was prepared, and an IPS type liquid crystal display having the structure shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and liquid crystal display are shown in Table 32.

(Examples 64 to 67)

The composition shown in Table 33 was prepared, and an IPS type liquid crystal display having the structure shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and liquid crystal display are shown in Table 34.

(Examples 68 to 71)

The composition shown in Table 35 was prepared, and an IPS type liquid crystal display having the structure shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and liquid crystal display are shown in Table 36.

(Examples 72 to 75)

The composition shown in Table 37 was prepared, and an IPS type liquid crystal display having the structure shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and liquid crystal display are shown in Table 38.

(Examples 76 to 79)

The composition shown in Table 39 was prepared, and an IPS type liquid crystal display having the structure shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and liquid crystal display are shown in Table 40.

(Examples 80 to 83)

The composition shown in Table 41 was prepared, and an IPS type liquid crystal display having the structure shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and liquid crystal display are shown in Table 42.

(Examples 84 to 87)

The composition shown in Table 43 was prepared, and an IPS type liquid crystal display having the structure shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and liquid crystal display are shown in Table 44.

(Examples 88 to 91)

The composition shown in Table 45 was prepared, and an IPS type liquid crystal display having the structure shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and liquid crystal display are shown in Table 46.

(Examples 92 to 95)

The composition shown in the modulation table 47 was used to produce an IPS type liquid crystal display having the structure shown in Figs. 1 and 2 . The evaluation results of the obtained composition and liquid crystal display are shown in Table 48.

(Examples 96 to 99)

The composition shown in Table 49 was prepared, and the structures shown in Figs. 1 and 2 were produced. IPS type liquid crystal display. The evaluation results of the obtained composition and liquid crystal display are shown in Table 50.

(Examples 100 to 103)

The composition shown in the modulation table 51 was prepared to produce an IPS type liquid crystal display having the structure shown in Figs. 1 and 2 . The evaluation results of the obtained composition and liquid crystal display are shown in Table 52.

(Examples 104 to 107)

The composition shown in Table 53 was prepared, and an IPS type liquid crystal display having the structure shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and liquid crystal display are shown in Table 54.

The liquid crystal composition prepared in the above examples has low viscosity and good solubility at low temperatures. Moreover, the lack of volatility can inhibit device contamination. Further, in the ODF process, variations in the amount of dripping of the liquid crystal composition can be suppressed, and a liquid crystal display which is stable over a long period of time can be produced. Further, the liquid crystal display produced in the examples is excellent in heat resistance and exhibits stable display characteristics over a long period of time.

[Industrial availability]

The liquid crystal composition having the positive dielectric constant anisotropy of the present invention has high solubility in low temperature, and the specific resistance and voltage holding ratio are very small due to heat and light, so that the product has high practicability. A liquid crystal display element including the same can achieve a high speed response. Further, in order to continue to stably drop the liquid crystal composition in the liquid crystal display element manufacturing step, it is very useful to suppress display failure due to the step and to produce high yield.

Claims (47)

A liquid crystal composition comprising a compound represented by the following formula (i) and at least one compound represented by the following formula (ii): In the above formula, R ^iia represents an alkenyl group having 2 to 5 carbon atoms, and R ^iib represents an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms; further, it further contains a liquid crystal relative to liquid crystal. A compound represented by the following formula (28.5) which is at least 13% by mass based on the total mass of the composition: The liquid crystal composition of claim 1, further comprising at least one compound represented by the following formula (L): In the above formula, R ^L1 and R ^L2 each independently represent an alkyl group having 1 to 8 carbon atoms, and one of the alkyl groups or at least two non-adjacent -CH ₂ - groups may be independently -CH=CH- , -C≡C-, -O-, -CO-, -COO- or -OCO-substitution, OL represents 0, 1, 2 or 3, and B ^L1 , B ^L2 and B ^L3 are each independently represented by the group below a group selected from the group: (a) 1,4-cyclohexylene (one -CH ₂ - or at least two -CH ₂ - not adjacent to the group may be substituted with -O-), and (b) 1,4-phenylene (one -CH= or no adjacent at least two -CH= may be substituted for -N=), the above-mentioned group (a) and (b) may also be independently substituted with a cyano group, a fluorine atom or a chlorine atom, and L ^L1 and L ^L2 each independently represent a single bond, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ -, - CH ₂ O-, -COO-, -OCO-, -OCF ₂ -, -CF ₂ O-, -CH=NN=CH-, -CH=CH-, -CF=CF- or -C≡C-, Where OL is 2 or 3 and L ^{L2 is} plural, they may be the same or different; when OL is 2 or 3 and B ^{L3 is} present, they may be the same or different, but the above formula (ii) Except for the compounds indicated. The liquid crystal composition of claim 1, further comprising at least one compound represented by the following formula (M): In the above formula, R ^M1 represents an alkyl group having 1 to 8 carbon atoms, and one of the alkyl groups or at least two of -CH ₂ - which are not adjacent to each other may be independently -CH=CH-, -C≡. C-, -O-, -CO-, -COO- or -OCO-substituted, PM represents 0, 1, 2, 3 or 4, and C ^M1 and C ^M2 each independently represent a group selected from the group below. : (d) 1,4-cyclohexylene (one -CH ₂ - or at least two -CH ₂ - not adjacent to the group may be substituted with -O- or -S-), and (e) 1,4-phenylene (one -CH= or no contiguous at least two -CH= may be substituted for -N=), the above-mentioned group (d) and group ( e) may also be independently substituted with a cyano group, a fluorine atom or a chlorine atom, and K ^M1 and K ^M2 each independently represent a single bond, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -OCF ₂ -, -CF ₂ O-, -COO-, -OCO- or -C≡C-, PM is 2, 3 or 4 and K ^{M1 is} present in plurals, they may be the same It may be different; when the PM is 2, 3 or 4 and the C ^M2 complex is present, they may be the same or different; X ^M1 and X ^M3 each independently represent a hydrogen atom, a chlorine atom or a fluorine atom, and X ^M2 represents hydrogen. Atom, fluorine atom, chlorine atom, cyano group a trifluoromethyl group, a fluoromethyloxy group, a difluoromethyloxy group, a trifluoromethoxy group or a 2,2,2-trifluoroethyl group, except for the compound represented by the above formula (i); However, the formula (M) does not include the compound represented by the above formula (28.5). The liquid crystal composition of claim 3, wherein at least one compound represented by the above formula (M) is at least one compound represented by the following formula (XI): In the above formula, X ¹¹¹ to X ¹¹⁷ each independently represent a fluorine atom or a hydrogen atom, and at least one of X ¹¹¹ to X ¹¹⁷ represents a fluorine atom, and R ¹¹⁰ represents an alkyl group having 1 to 5 carbon atoms and 2 to 2 carbon atoms. An alkenyl group of 5 or an alkoxy group having 1 to 4 carbon atoms, and Y ¹¹ represents a fluorine atom or -OCF ₃ . The liquid crystal composition of claim 4, wherein at least one compound represented by the above formula (XI) contains at least 4% by mass of the following formula (45.4) with respect to the total mass of the liquid crystal composition. Expressed compound: The liquid crystal composition of the third aspect of the invention, wherein at least one compound represented by the above formula (M) is at least one compound represented by the following formula (IX-1): In the above formula, R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and X ⁹² represents a hydrogen atom or a fluorine atom, and Y ⁹ represents Fluorine atom or -OCF ₃ ; However, Formula (IX-1) does not contain the compound represented by the above formula (28.5). The liquid crystal composition of the third aspect of the invention, wherein at least one compound represented by the above formula (M) is at least one compound represented by the following formula (IX-2): In the above formula, R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and X ⁹¹ and X ⁹² each independently represent a hydrogen atom or a fluorine atom. An atom, Y ⁹ represents a fluorine atom, a chlorine atom, or -OCF ₃ . The liquid crystal composition of the seventh aspect of the invention, wherein at least one compound represented by the above formula (IX-2) is at least one compound represented by the following formula (IX-2-2): In the above formula, R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms. The liquid crystal composition of claim 8, wherein at least one compound represented by the above formula (IX-2-2) contains at least 11% by mass of the following formula with respect to the total mass of the liquid crystal composition. (31.2) Compounds indicated: The liquid crystal composition of the eighth aspect of the invention, wherein at least one compound represented by the above formula (IX-2-2) is contained in an amount of 0.5% by mass or more and less than 3% by mass based on the total mass of the liquid crystal composition. A compound represented by the following formula (31.4): The liquid crystal composition of the seventh aspect of the invention, wherein at least one compound represented by the above formula (IX-2) is at least one compound represented by the following formula (IX-2-5): In the above formula, R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms. The liquid crystal composition of claim 11, wherein at least one compound represented by the above formula (IX-2-5) is contained in an amount of 0.5% by mass or more and less than 10% by mass based on the total mass of the liquid crystal composition. Compound represented by formula (34.5): The liquid crystal composition of claim 11, wherein at least one compound represented by the above formula (IX-2-5) contains at least 8% by mass of the formula (34.1) based on the total mass of the liquid crystal composition. ) the compound represented: The liquid crystal composition of claim 2, wherein at least one compound represented by the above formula (L) contains at least one compound represented by the formula (V-1): In the above formula, R ⁵¹ and R ⁵² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and X ⁵¹ and X ⁵² are each independently. Indicates a fluorine atom or a hydrogen atom. The liquid crystal composition of claim 14, wherein any one of X ⁵¹ and X ⁵² is a hydrogen atom and the other is a fluorine atom. The liquid crystal composition of claim 15, wherein at least one compound represented by the above formula (V-1) is a compound represented by the formula (21.1) and a compound represented by the formula (22.1). At least one: The liquid crystal composition of claim 3, wherein at least one compound represented by the above formula (M) contains at least one compound represented by the formula (X-2): In the above formula, X ¹⁰² and X ¹⁰³ each independently represent a fluorine atom or a hydrogen atom, Y ¹⁰ represents a fluorine atom, a chlorine atom or -OCF ₃ , and R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms and 2 to 2 carbon atoms. An alkenyl group of 5 or an alkoxy group having 1 to 4 carbon atoms. The liquid crystal composition of claim 17, wherein at least one compound represented by the above formula (X-2) contains the following formula (X-2-1) or the following formula (X-) 2-2) At least one compound represented: In the above formula, R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms. The liquid crystal composition of claim 18, which comprises a compound represented by the following formula (39.2) and/or a compound represented by the following formula (40.2): The liquid crystal composition of the third aspect of the invention, wherein at least one compound represented by the above formula (M) is at least one compound represented by the following formula (X-1): In the above formula, X ¹⁰¹ to X ¹⁰³ each independently represent a fluorine atom or a hydrogen atom, and R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms. base. The liquid crystal composition of claim 20, wherein at least one compound represented by the above formula (X-1) is a compound represented by the following formula (X-1-2), or the following At least one compound represented by the formula (X-1-3): In the above formula, R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms. The liquid crystal composition of claim 21, which comprises a compound represented by the following formula (37.2) and/or a compound represented by the following formula (38.2): The liquid crystal composition of the second aspect of the invention, wherein at least one compound represented by the above formula (L) is at least one compound represented by the following formula (IV): In the above formula, R ⁴¹ and R ⁴² each independently represent an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and each of X ⁴¹ and X ⁴² independently represents a hydrogen atom or a fluorine atom. The liquid crystal composition of claim 23, wherein any one of X ⁴¹ and X ⁴² represents a hydrogen atom, and the other represents a fluorine atom. The liquid crystal composition of claim 24, wherein at least one compound represented by the above formula (IV) is a compound represented by the following formula (19.1) and/or represented by the following formula (19.2) compound of: The liquid crystal composition of the third aspect of the invention, wherein at least one compound represented by the above formula (M) is at least one compound represented by the following formula (XIV-2): In the above formula, R ¹⁴⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and X ¹⁴¹ to X ¹⁴⁴ each independently represent a fluorine atom or hydrogen. The atom, Y ¹⁴ represents a fluorine atom, a chlorine atom or -OCF ₃ . The liquid crystal composition of claim 26, wherein at least one compound represented by the above formula (XIV-2) is at least one compound represented by the following formula (XIV-2-2): In the above formula, R ¹⁴⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms. The liquid crystal composition of claim 27, wherein at least one compound represented by the above formula (XIV-2-2) is contained in an amount of 0.5% by mass or more and less than 4% by mass based on the total mass of the liquid crystal composition. A compound represented by the following formula (54.1): The liquid crystal composition of claim 26, wherein at least one compound represented by the above formula (XIV-2) is at least one compound represented by the following formula (XIV-2-4): In the above formula, R ¹⁴⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms. The liquid crystal composition of claim 29, wherein at least one compound represented by the above formula (XIV-2-4) contains at least 5% by mass of the following formula with respect to the total mass of the liquid crystal composition. (56.1) Compounds indicated: The liquid crystal composition of the second aspect of the invention, wherein at least one compound represented by the above formula (L) is at least one compound represented by the following formula (I-5): In the above formula, R ¹¹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and R ¹² represents an alkyl group having 1 to 5 carbon atoms. An alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms. The liquid crystal composition of claim 31, wherein at least one compound represented by the above formula (I-5) is a compound represented by the following formula (6.6): The liquid crystal composition of the second aspect of the invention, wherein at least one compound represented by the above formula (L) is at least one compound represented by the following formula (I-7): In the above formula, R ¹¹ and R ¹² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and X ¹² represents a fluorine atom or chlorine. atom. The liquid crystal composition of claim 33, wherein at least one compound represented by the above formula (I-7) is a compound represented by the following formula (8.1): The liquid crystal composition of claim 1, which further comprises a compound represented by the following formula (2.5): The liquid crystal composition of claim 1, which further comprises a compound represented by the following formula (Qa): In the above formula, R ^Q1 represents a linear alkyl group or a branched alkyl group having 1 to 10 carbon atoms. The liquid crystal composition of claim 36, wherein the compound represented by the above formula (Qa) is a compound represented by the following formula (Qa-1): The liquid crystal composition of claim 1, which further comprises a compound represented by the following formula (Qc): In the above formula, R ^Q3 represents a linear alkyl group having 1 to 8 carbon atoms, a branched alkyl group, a linear alkoxy group or a branched alkoxy group. The liquid crystal composition of claim 38, wherein the compound represented by the above formula (Qc) is a compound represented by the following formula (Qc-1): The liquid crystal composition of claim 1, further comprising at least one compound represented by the following formula (XX): In the above formula (XX), X ²⁰¹ and X ²⁰² each independently represent a hydrogen atom or a methyl group, and Sp ²⁰¹ and Sp ²⁰² each independently represent a single bond, an alkylene group having 1 to 8 carbon atoms or -O-(CH ₂ ). _s - (wherein, s represents an integer of 2 to 7, the oxygen atom is bonded to the aromatic ring), and Z ²⁰¹ represents -OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, -CF ₂ O-, -OCF ₂ -, -CH ₂ CH ₂ -, -CF ₂ CF ₂ -, -CH=CH-COO-, -CH=CH-OCO-, -COO-CH=CH-, -OCO-CH =CH-, -COO-CH ₂ CH ₂ -, -OCO-CH ₂ CH ₂ -, -CH ₂ CH ₂ -COO-, -CH ₂ CH ₂ -OCO-, -COO-CH ₂ -, -OCO- CH ₂ -, -CH ₂ -COO-, -CH ₂ -OCO-, -CY ¹ =CY ² - (wherein, Y ¹ and Y ² each independently represent a fluorine atom or a hydrogen atom), -C≡C-, Or a single bond, M ²⁰¹ represents a 1,4-phenylene group, a trans-1,4-cyclohexylene group or a single bond, and any hydrogen atom of all 1,4-phenylene groups in the formula may be substituted by a fluorine atom. The liquid crystal composition of claim 40, wherein at least one compound represented by the above formula (XX) is a compound represented by the following formula (XX-2): The liquid crystal composition of the second aspect of the invention, wherein at least one compound represented by the above formula (L) is a compound represented by the following formula (12.3): The liquid crystal composition of claim 1, which further comprises a compound represented by the following formula (62.1): The liquid crystal composition of claim 1, which further comprises a compound represented by the following formula (62.3): A liquid crystal display element using the liquid crystal composition of the first aspect of the patent application. For example, the liquid crystal display element of claim 45, wherein the display mode is IPS mode, OCB mode, ECB mode, VA mode, VA-IPS mode, or FFS mode. A liquid crystal display characterized by using a liquid crystal display element as disclosed in claim 45 or 46.