TWI577787B - 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 dielectric constant anisotropy (??) as a liquid crystal display material, and a liquid crystal display element using the same.

The liquid crystal display element is represented by a timepiece or a desktop electronic computer, and is used in various measuring apparatuses, automobile panels, word processors, electronic notebooks, printers, computers, televisions, clocks, advertisement display boards, and the like. 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), or an IPS (in-plane switching) type. The liquid crystal composition used in these liquid crystal display elements is required to exhibit stability in terms of moisture, air, heat, light, etc., and to display a liquid crystal phase in a wide temperature range as wide as possible around a room temperature. Low viscosity and low drive voltage. Further, in order to optimize the dielectric anisotropy (Δε) or the refractive index anisotropy (Δn) for each display element, the liquid crystal composition is composed of several types to several tens of types of compounds. .

In a vertical alignment (VA) type display, a liquid crystal composition having a negative Δ ε is used, and in a horizontal alignment type display such as a TN type, an STN type, or an IPS (in-plane switching) type, a liquid crystal composition having a positive Δ ε is used. Further, it has been reported that when the voltage is not applied, the liquid crystal composition having a positive Δ ε is vertically aligned, and the driving mode is displayed by applying a lateral electric field, and the necessity of the liquid crystal composition having a positive Δ ε is further increased. On the other hand, in all driving methods, low voltage driving, high-speed reaction, and a wide operating temperature range are required. 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) is high. In addition, in order to set Δn×d of the product of Δn and the cell gap (d) to a predetermined value, it is necessary to adjust the Δn of the liquid crystal composition to the cell gap to be adjusted to an appropriate range. Further, when a liquid crystal display element is applied to a television or the like, a liquid crystal composition having a small rotational viscosity (γ ₁ ) is required because of high speed reactivity.

In the configuration of the liquid crystal composition which is aimed at high-speed reactivity, for example, a compound represented by the following formulas (A-1) to (A-3) which exhibits a liquid crystal compound having a positive combination Δε and a Δε-neutral are disclosed. A liquid crystal composition used for (B) of a liquid crystal compound. Among the characteristics of such a liquid crystal composition, a liquid crystal compound having a positive Δ ε has a -CF ₂ O- structure, or a liquid crystal compound having a Δ ε neutral has an alkenyl group, and is widely known in the field of liquid crystal compositions. (Refer to Patent Documents 1 to 4).

On the other hand, the use of the liquid crystal display element has been expanded, and the use method and manufacturing method have also been largely changed. In order to cope with such changes, it is required to optimize the characteristics other than the basic physical property values. In other words, a liquid crystal display device using a liquid crystal composition is widely used in a VA type or an IPS type, and a display element having a size of 50 or more is also put into practical use. As the size of the substrate increases, the method of injecting the liquid crystal composition into the substrate also changes, and the conventional vacuum injection method becomes the mainstream of the injection method by the ODF (One Drop Fill) method. However, when the liquid crystal composition is dropped onto the substrate, the problem that the drop marks cause a decrease in display quality is revealed.

Further, in the process of the liquid crystal display element of the ODF method, it is necessary to drip the optimum amount of liquid crystal in accordance with the size of the liquid crystal display element. When the deviation of the amount of dripping is larger than the optimum value, the balance of the refractive index or the driving electric field of the liquid crystal display element which is designed in advance may collapse, and display defects such as unevenness or poor contrast may occur. In particular, small liquid crystal display elements widely used in recent popular smart phones have a small amount of liquid crystal drop due to a suitable amount. It is difficult to control the offset from the optimum value within a certain range. Therefore, in order to maintain a high yield of the liquid crystal display element, the liquid crystal composition is required to be subjected to a sudden pressure change or smear in the dripping device which occurs when the liquid crystal is dropped, and can be stably maintained for a long period of time. dropping.

In the liquid crystal composition used for the liquid crystal display device driven by the active matrix driven by the TFT element or the like, it is required to consider the high-speed reaction performance and high specific resistance required for the liquid crystal display element while considering the manufacturing method of the liquid crystal display element. Value, high voltage retention, or development of an increase in the stability of the stimulus other than light or heat.

[Previous Technical Literature] [Patent Literature]

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

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

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

[Patent Document 4] Japanese Patent Publication No. 2011-052120

The problem to be solved by the present invention is to provide a liquid crystal composition having a positive Δε, a liquid crystal phase having a wide temperature range, low viscosity, good solubility at low temperatures, high specific resistance or voltage retention, and stability for heat or light. Further, the liquid crystal composition is provided by suppressing display defects caused by burn-in or dripping marks by using it, and producing a liquid crystal display element exhibiting excellent display quality with high yield, and A liquid crystal display element using the liquid crystal composition is provided.

The present invention encompasses the following aspects.

(1) A liquid crystal composition containing at least one compound represented by the formula (i) and at least one compound represented by the formula (ii), (wherein R ⁱ¹ represents an alkyl group having 2 to 5 carbon atoms); (wherein R ⁱⁱ¹ and R ⁱⁱ² each independently represent an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and X ⁱⁱ¹ and X ⁱⁱ² each independently represent a hydrogen atom or a fluorine atom).

(2) The liquid crystal composition according to (1), which contains at least one compound represented by the formula (L), (wherein R ^L1 and R ^L2 each independently represent an alkyl group having 1 to 8 carbon atoms, and one of the alkyl groups or two or more non-adjacent -CH 2 - independently of each other may be independently -CH=CH -, -C≡C-, -O-, -CO-, -COO- or -OCO-substituted, OL represents 0, 1, 2 or 3, and B ^L1 , B ^L2 and B ^L3 each independently represent

(a) 1,4-cyclohexylene (one -CH2- or two or more non-adjacent-CH2- may be substituted by -O-) and (b) 1,4-phenylene a group in the group consisting of one -CH= or two or more non-contiguous -CH=substitutable -N=, and each of the above-mentioned groups (a) and (b) Independently substituted by 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-, when OL is When 2 or 3 and L ^L2 are plural, they may be the same or different. When OL is 2 or 3 and B ^L3 is plural, they may be the same or different, but are represented by formula (ii) Except for selected compounds in the group).

(3) The liquid crystal composition according to (1) or (2), which contains at least one compound represented by the formula (M), (wherein R ^M1 represents an alkyl group having 1 to 8 carbon atoms, and one of the alkyl groups or two or more non-adjacent -CH 2 - each independently may be -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

(d) 1,4-cyclohexylene (one -CH2- present in this group or two or more non-contiguous -CH2- may be substituted by -O- or -S-) and (e) 1,4 - a group in a group consisting of a phenyl group (one -CH= or two or more non-contiguous -CH=substitutable -N=) in the group, the above group (d), a group (e) each independently may be substituted by 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-, when PM is 2, 3 or 4 and K ^M1 is present in plural, they may The same or different, when PM is 2, 3 or 4 and the C ^M2 system is present in plural, they may be the same or different, and X ^M1 and X ^M3 each independently represent a hydrogen atom, a chlorine atom or a fluorine atom, and X ^M2 represents a hydrogen atom, a fluorine atom, a chlorine atom, a cyano group, a trifluoromethyl group, a fluoromethoxy group, a difluoromethoxy group, a trifluoromethoxy group or a 2,2,2-trifluoroethyl group; Except for the compounds shown.

(4) The liquid crystal composition according to (3), wherein the compound represented by the formula (M) contains at least one compound represented by the formula (X-2-1). (In the 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).

(5) The liquid crystal composition according to (4), wherein the compound represented by the formula (X-2-1) contains a compound represented by the formula (39.2).

(6) The liquid crystal composition according to (2), wherein the compound represented by the formula (L) contains at least one compound represented by the formula (I-4). (wherein 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).

(7) The liquid crystal composition according to (6), wherein the compound represented by the formula (I-4) contains a compound represented by the formula (5.2).

(8) The liquid crystal composition according to (1), wherein the compound represented by the formula (ii) contains at least one compound represented by the formula (IV-1). (wherein R ⁴³ and R ⁴⁴ each independently represent an alkyl group having 1 to 5 carbon atoms).

(9) The liquid crystal composition according to (8), wherein the compound represented by the formula (IV-1) contains a compound represented by the formula (18.3).

(10) The liquid crystal composition according to (8), wherein the compound represented by the formula (IV-1) contains 7% or more of the compound represented by the formula (18.4) and/or the formula (18.5).

(11) The liquid crystal composition according to (2), wherein the compound represented by the formula (L) contains at least one compound represented by the formula (V-2). (wherein 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 each of X ⁵¹ and X ⁵² Independently represents a fluorine atom or a hydrogen atom).

(12) The liquid crystal composition according to (11), wherein the compound represented by the formula (V-2) contains a compound represented by the formula (23.2) and/or the formula (24.2).

(13) The liquid crystal composition according to (11), wherein the compound represented by the formula (V-2) contains 6% or more of the compound represented by the formula (23.1) and/or the formula (24.1).

(14) The liquid crystal composition according to (3), wherein the compound represented by the formula (M) contains at least one compound represented by the formula (VIII-1). (In the formula, 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).

(15) The liquid crystal composition according to (14), wherein the compound represented by the formula (VIII-1) contains a compound represented by the formula (26.1).

(16) The liquid crystal composition according to (2), wherein the compound represented by the formula (L) contains at least one compound represented by the formula (I-2). (wherein R ¹³ and R ¹⁴ each independently represent an alkyl group having 1 to 5 carbon atoms).

(17) The liquid crystal composition according to (16), wherein the compound represented by the formula (I-2) contains a compound represented by the formula (3.4).

(18) The liquid crystal composition according to (16), wherein the compound represented by the formula (I-2) contains 6% or more of the compound represented by the formula (3.3).

(19) The liquid crystal composition according to (16), wherein the compound represented by the formula (I-2) contains 13% or more of the compound represented by the formula (3.1).

(20) The liquid crystal composition according to (2), wherein the compound represented by the formula (L) contains at least one compound represented by the formula (I-5). (wherein 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).

(21) The liquid crystal composition according to (20), wherein the compound represented by the formula (I-5) contains a compound represented by the formula (6.6).

(22) The liquid crystal composition according to (20), wherein the compound represented by the formula (I-5) contains 8% or more of the compound represented by the formula (6.3).

(23) The liquid crystal composition according to (2), wherein the compound represented by the formula (II) contains a compound represented by the 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).

(24) The liquid crystal composition according to (23), wherein the compound represented by the formula (II-1) contains at least one compound represented by the formula (10.1).

(25) The liquid crystal composition according to (3), wherein the compound represented by the formula (M) contains a compound represented by the formula (IX-2-2). (In the 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).

(26) The liquid crystal composition according to (25), wherein the compound represented by the formula (IX-2-2) contains a compound represented by the formula (31.4).

(27) The liquid crystal composition according to (25), wherein the compound represented by the formula (IX-2-2) contains 0.5% or more and less than 8% of the compound represented by the formula (31.2).

(28) The liquid crystal composition according to (3), wherein the compound represented by the formula (M) contains at least one compound represented by the formula (XIV-2-2). (In the formula, R ¹⁴ 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 (28), wherein the compound represented by the formula (XIV-2-2) contains a compound represented by the formula (54.2) and/or the formula (54.4).

(30) The liquid crystal composition according to (3), wherein the compound represented by the formula (M) contains at least one compound represented by the formula (X-4-1). (In the 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).

(31) The liquid crystal composition according to (30), wherein the compound represented by the formula (X-4-1) contains a compound represented by the formula (42.3).

(32) The liquid crystal composition according to (2), wherein the compound represented by the formula (L) contains 14% or more of the compound represented by the formula (I-1-1). (wherein 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).

(33) The liquid crystal composition according to (32), wherein the compound represented by the formula (I-1-1) contains 14% or more of the compound represented by the formula (1.3).

(34) The liquid crystal composition according to (2), wherein the compound represented by the formula (L) contains 5% or more of the compound represented by the formula (II-2). (R ²³ represents an alkenyl group having 2 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).

(35) The liquid crystal composition according to (34), wherein the compound represented by the formula (II-2) contains 5% or more of the compound represented by the formula (11.2).

(36) The liquid crystal composition according to (1), wherein the compound represented by the formula (IV) contains a compound represented by the formula (IV-2). (wherein 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 the alkenyl groups having 2 to 5 carbon atoms; X ⁴¹ And X ⁴² each independently represents a hydrogen atom or a fluorine atom).

(37) The liquid crystal composition according to (36), wherein the compound represented by the formula (IV-2) contains 0.5% or more and less than 5% of the formula (19.1) and/or the formula (19.2). compound of,

(38) The liquid crystal composition according to (36), wherein the compound represented by the formula (IV-2) contains 0.5% or more and less than 5% of the formula (19.31) and/or the formula (19.32). compound of,

(39) The liquid crystal composition according to (36), wherein the compound represented by the formula (IV-2) contains 6% or more of the compound represented by the formula (19.3) and/or the formula (19.4).

(40) The liquid crystal composition according to (3), wherein the compound represented by the formula (M) contains 0.5% or more and less than 5% of the compound represented by the formula (X-6). (In the 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).

(41) The liquid crystal composition according to (40), wherein the compound represented by the formula (X-6) contains 0.5% or more and less than 5% of the compound represented by the formula (44.1).

(42) The liquid crystal composition according to (2), wherein the compound represented by the formula (L) contains 6% or more of the compound represented by the 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).

(43) The liquid crystal composition according to (42), wherein the compound represented by the formula (III) contains 6% or more of the compound represented by the formula (15.1).

(44) The liquid crystal composition according to (3), wherein the compound represented by the formula (M) contains 6% or more of the compound represented by the formula (X-1-2). (In the 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).

(45) The liquid crystal composition according to (44), wherein the compound represented by the formula (X-1-2) contains 6% or more of the compound represented by the formula (37.2).

(46) The liquid crystal composition according to (3), wherein the compound represented by the formula (M) contains 0.5% or more and less than 5% of the compound represented by the formula (IX-1-1). (In the 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).

(47) The liquid crystal composition according to (46), wherein the compound represented by the formula (IX-1-1) contains 0.5% or more and less than 5% of the compound represented by the formula (28.3).

(48) The liquid crystal composition according to (3), wherein the compound represented by the formula (M) contains 8% or more of the compound represented by the formula (XIV-1-1). (In the formula, R ¹⁴ 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).

(49) The liquid crystal composition according to (48), wherein the compound represented by the formula (XIV-1-1) contains 8% or more of the compound represented by the formula (51.1).

(50) The liquid crystal composition according to (3), wherein the compound represented by the formula (M) contains 0.5% or more and less than 5% of the compound represented by the formula (IX-2-3). (In the 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).

(51) The liquid crystal composition according to (50), wherein the compound represented by the formula (IX-2-3) contains 0.5% or more and less than 5% of the compound represented by the formula (32.2).

(52) The liquid crystal composition according to (50), wherein the compound represented by the formula (IX-2-3) contains 0.5% or more and less than 5% of the compound represented by the formula (32.4).

(53) The liquid crystal composition according to (3), wherein the compound represented by the formula (M) contains 0.5% or more and less than 4% of the compound represented by the formula (X-1-1). (In the 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).

(54) The liquid crystal composition according to (53), wherein the compound represented by the formula (X-1-1) contains 0.5% or more and less than 4% of the compound represented by the formula (36.1).

(55) The liquid crystal composition according to (3), wherein the compound represented by the formula (M) contains 0.5% or more and less than 2% of the compound represented by the formula (X-3-1). (In the 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).

(C) The liquid crystal composition of (55), wherein the compound represented by the formula (X-3-1) contains 0.5% or more and less than 2% of the compound represented by the formula (41.2).

(57) A liquid crystal display element for active matrix driving, which uses the liquid crystal composition according to any one of (1) to (56).

(58) The liquid crystal display element for active matrix driving according to (57), wherein the operation mode is the IPS method.

(59) The liquid crystal display element for active matrix driving according to (57), wherein the operation mode is the VA-IPS method.

(60) A liquid crystal display for driving an active matrix as described in (57) The component has an action mode of FFS mode.

(61) The liquid crystal display element for active matrix driving according to (57), wherein the operation mode is the ECB method.

(62) The liquid crystal display element for active matrix driving according to (57), wherein the operation mode is the OCB method.

(63) The active matrix driving liquid crystal display device according to (57), wherein the operation mode is the VA method.

(64) A liquid crystal display device using the active matrix driving liquid crystal display device according to any one of (57) to (63).

The liquid crystal composition having positive dielectric anisotropy of the present invention maintains low viscosity, high specific resistance, and high voltage holding ratio, and significantly improves solubility at low temperatures, and liquid crystal in ODF method. In the display component process, the drip can be continued for a long time. Therefore, the composition of the present invention can suppress display defects caused by the process, and can produce a liquid crystal display element exhibiting excellent display quality with high yield, and has high practicability (applicability) for liquid crystal products, and uses the IPS (surface) thereof. A liquid crystal display element such as an internal switching type or an FFS (Fringe Field Switching) type can achieve a high-speed reaction.

100‧‧‧1st substrate

102‧‧‧TFT layer

103‧‧‧ pixel electrodes

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‧‧‧protrusions (columnar spacers)

303‧‧‧Liquid layer

304‧‧‧protrusions (columnar spacers)

401‧‧‧ mask pattern

402‧‧‧ resin layer

L‧‧‧Light

Fig. 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 "back plate", and a substrate having 200 to 205 is referred to as a "front plate".

Figure 2 is made using column spacers formed on a black matrix. A pattern is used as a map of the exposure processing steps of the reticle pattern.

[Formation of the Invention]

The liquid crystal composition of the present invention contains at least one of the compounds represented by the following formula (i) and at least one of the compounds represented by the following formula (ii). The description of the liquid crystal composition is carried out below, but the "%" which is not particularly indicated means "% by mass".

(wherein R ⁱ¹ represents an alkyl group having 2 to 5 carbon atoms).

(wherein R ⁱⁱ¹ and R ⁱⁱ² each independently represent an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and X ⁱⁱ¹ and X ⁱⁱ² each independently represent a hydrogen atom or a fluorine atom).

<Compound represented by the formula (i)>

The liquid crystal composition of the present invention contains at least one compound represented by the formula (i).

(wherein R ⁱ¹ represents an alkyl group having 2 to 5 carbon atoms).

The content of the compound represented by the above formula (i) is based on solubility at low temperature, transfer temperature, electrical reliability, etc., relative to the present invention. The total mass of the liquid crystal composition is preferably 0.5% by mass or more and 30% by mass or less, more preferably 2% by mass or more and 25% by mass or less, and particularly preferably 2% by mass or more and 22% by mass or less. In the above, the content of the compound represented by the above formula (i) is preferably 2 to 20% by mass, more preferably 2 to 12% by mass, based on the total mass of the liquid crystal composition of the present invention. Preferably, it is 2 to 8 mass%, more preferably 2 to 5 mass%, more preferably 2 to 4 mass%, more preferably 4 to 22 mass%, more preferably 5 to 22 mass%, more preferably 10~ 22% by mass, more preferably 14 to 22% by mass, more preferably 20 to 22% by mass, still more preferably 4 to 5% by mass, still more preferably 5 to 8% by mass, still more preferably 10 to 12% by mass, more preferably Good is 14~20% by mass.

Further, the compound represented by the formula (i) used in the liquid crystal composition of the present invention is specifically preferably at least one compound selected from the group consisting of compounds represented by the formulae (45.1) to (45.4). It is preferable to contain at least one compound selected from the group consisting of compounds represented by formula (45.2) to formula (45.4), and more preferably a compound represented by formula (45.2).

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (45.2) is considered in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like, and is based on the total mass of the liquid crystal composition of the present invention. It is preferably 1% by mass or more and 25% by mass or less, more preferably 2% by mass or more and 20% by mass or less, still more preferably 2% by mass or more and 15% by mass or less, and particularly preferably 2% by mass or more and 12% by mass or less.

In a particularly preferable range, for example, 2% by mass or more and 10% by mass or less, 2% by mass or more and 6% by mass or less, 2% by mass or more and 5% by mass or less, 2% by mass or more and 4% by mass or less, and 3 masses are exemplified. %% or more and 11% by mass or less, 4% by mass or more and 11% by mass or less, and 4% by mass or more and 5% by mass or less.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (45.3) is considered in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like, and is based on the total mass of the liquid crystal composition of the present invention. It is preferably 1% by mass or more and 20% by mass or less, more preferably 1% by mass or more. 15% by mass or less is particularly preferably 1% by mass or more and 10% by mass or less, and particularly preferably 2% by mass or more and 9% by mass or less. In a particularly preferable range, for example, 4% by mass or more and 9% by mass or less, 5% by mass or more and 9% by mass or less, 2% by mass or more and 8% by mass or less, 2% by mass or more and 7% by mass or less, and 2 masses may be mentioned. %% or more and 4% by mass or less, 4% by mass or more and 8% by mass or less, and 5% by mass or more and 7% 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 considered in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like, and is based on the total mass of the liquid crystal composition of the present invention. It is 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, still more preferably 1% by mass or more and 10% by mass or less, and particularly preferably 2% by mass or more and 10% by mass or less. In a particularly preferable range, for example, 4% by mass or more and 10% by mass or less, 5% by mass or more and 10% by mass or less, 2% by mass or more, 7 mass% or less, 2% by mass or more and 6% by mass or less, and 5 The mass% or more is 7% by mass or less.

The compound which can be combined with the compound represented by the above formula (i) is not particularly limited, but is considered to be suitable for each embodiment in consideration of solubility at low temperature, 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 used, and in still another embodiment, three types or more are combined.

For example, when a compound represented by the formula (i) is contained, the content thereof is preferably 0.5% by mass or more and 16% by mass or less, more preferably 1% by mass or more and 13% by mass or less, in a certain embodiment. It is particularly preferably 2% by mass or more and 10% by mass.

<Compound represented by the formula (ii)>

The liquid crystal composition of the present invention contains at least one compound represented by the following formula (ii).

(wherein R ⁱⁱ¹ and R ⁱⁱ² each independently represent an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and X ⁱⁱ¹ and X ⁱⁱ² each independently represent a hydrogen atom or a fluorine atom).

The kind of the compound which can be combined is not particularly limited, but is suitably combined in accordance with the required properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one type in one embodiment of the present invention. Alternatively, in another embodiment of the present invention, there are two types. Furthermore, in still another embodiment of the present invention, there are three types. Furthermore, in still 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 types.

Further, the compound represented by the above formula (ii) is preferably, for example, 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 It is suitably adjusted according to the required properties such as solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dropping trace, afterimage, and dielectric anisotropy.

The content of the compound represented by the above formula (IV-1) is, for example, 0.5 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 is 3 to 30% by mass. Furthermore, in still another embodiment of the present invention, the content is 3 to 20% by mass. Furthermore, in still 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 30% by mass. Furthermore, in still another embodiment of the present invention, the content is 6 to 30% by mass.

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

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, and more preferably one to four. Further, since the selected compound has a wide molecular weight distribution and is effective for solubility, for example, one of the compounds represented by the formula (18.1) or (18.2) and the formula (18.4) or (18.5) are preferably used. One of the compounds, one of the compounds represented by the formula (18.6) or the formula (18.7), and the like 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 preferably contained.

Further, when only one type is contained, it is preferred to select a compound represented by the formula (18.4). When two types are contained, it is preferred to select a compound represented by the formulae (18.1) and (18.6). Preferably, the compounds of the formulae (18.1), (18.4) and (18.6) are selected.

Further, when at least one compound represented by the formula (i) and at least one compound represented by the formula (18.3) of the compound represented by the formula (ii) are contained, the compound represented by the formula (18.3) The content is preferably from 0.5 to 12% by mass, more preferably from 4 to 11% by mass, even more preferably from 7 to 9% by mass, in a certain embodiment.

Alternatively, or further, the compound represented by the above formula (ii) is, for example It is preferably at least one compound selected from the group of compounds represented by the general 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 2 to 5 carbon atoms. The alkenyl group, 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, but is suitably combined in accordance with the required properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (IV-2) must be such as solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dripping trace, afterimage, 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. More preferably, the content is 1 to 15% by mass, 1 to 13%, 2 to 15% by mass, 2 to 13% by mass, 4 to 13% by mass, 1 to 4% by mass, and 2 to 4% by mass.

Further, the compound represented by the formula (IV-2) is preferably, for example, at least one compound selected from the group consisting of compounds represented by the following formulas (19.1) to (19.8), of which the formula (19.2 is preferred) ) the compound shown.

As a component of the liquid crystal composition, since the molecular weight distribution of the selected compound is broad and effective in solubility, from the liquid crystal composition In view of the improvement of the solubility, for example, one of the compounds represented by the formula (19.1) or (19.2) and one of the compounds represented by the formula (19.3) or (19.4) are preferably selected. 19.5) One of the compounds represented by the formula (19.6) and one of the compounds represented by the formula (19.7) or (19.8) are appropriately combined.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (19.2) is considered in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like, and is based on the total mass of the liquid crystal composition of the present invention. It is preferably 0.5% by mass or more and less than 14% by mass, more preferably 0.5% by mass or more and less than 11% by mass, particularly preferably 0.5% by mass or more and less than 8% by mass, and more preferably 0.5% by mass or more. Less than 5% by mass.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (19.31) is considered in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like, and is based on the total mass of the liquid crystal composition of the present invention. It is preferably 0.5% by mass or more and less than 14% by mass, more preferably 0.5% by mass or more and less than 11% by mass, particularly preferably 0.5% by mass or more and less than 8% by mass, and more preferably 0.5% by mass or more. Less than 5% by mass.

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

Further, in the liquid crystal composition of the present invention, it is preferred to contain one or two types of the compound represented by the above formula (ii).

Specifically, it is preferable to select one of the above formulas (19.1) to (19.8) represented by the above formula (IV-1) (18.1) to (18.9) and the above formula (IV-2). 1 type or 2 types.

<Regarding Composition of Liquid Crystal Composition of the Present Invention>

The total content of the compound represented by the above formula (i) and the compound represented by the formula (ii) is preferably 5 to 35 mass%, more preferably 10 to 30 mass, based on the total mass of the liquid crystal composition. %, especially preferably 15 to 25% by mass, and more preferably 6 to 25% by mass.

(When the liquid crystal composition of the present invention contains at least one compound of the formula (i) and at least one compound of the formula (ii))

When the liquid crystal composition of the present invention contains at least one kind of compound represented by the formula (i), the compound represented by the formula (ii) preferably contains one type or two types.

Specifically, the compound represented by the formula (ii) preferably contains the above formula represented by the above formula (IV-1) (18.1) to (18.9) and the above formula (IV-2). (19.1)~ One type or two types selected from the formula (19.8).

Further, when the liquid crystal composition of the present invention contains at least one compound represented by the formula (i) and a compound represented by the formula (1), at least a compound represented by the following formula (18.3), In a certain embodiment, the content of the compound (18.3) is preferably 0.5% by mass or more and 12% by mass or less, more preferably 4% by mass or more and less than 10% by mass, and particularly preferably 7% by mass or more. Below mass%.

When the liquid crystal composition of the present invention contains at least one compound represented by the formula (i) and at least a compound represented by the following formula (19.2) as a compound represented by the formula (ii), the formula (19.2) In a certain embodiment, the content of the compound shown is preferably 0.5% by mass or more and less than 5% by mass, more preferably 1% by mass or more and less than 5% by mass, and particularly preferably 3% by mass or more and less. At 5 mass%.

When the liquid crystal composition of the present invention contains at least one compound of the formula (i) and at least a compound represented by the following formula (18.4) as a compound represented by the formula (ii), the formula (18.4) In a certain embodiment, the content of the compound is preferably more than 6% by mass and 15% by mass or less, more preferably more than 6% by mass and not more than 12% by mass, and more preferably more than 6% by mass. 9% by mass or less.

When the liquid crystal composition of the present invention contains at least one compound of the formula (i) and a compound represented by the formula (ii) as at least the compound of the following formula (19.4), the formula (19.4) The content of the compound shown in the embodiment is preferably more than 5% by mass and not more than 14% by mass, more preferably more than 5% by mass and less than 11% by mass, particularly preferably 5 The mass% is more than 8 mass%.

When the liquid crystal composition of the present invention contains at least one compound of the formula (i) and a compound represented by the formula (ii) as at least the compound represented by the following formula (19.31), the formula (19.31) In a certain embodiment, the content of the compound is preferably 0.5% by mass or more and less than 5% by mass, more preferably 1% by mass or more and less than 5% by mass, and particularly preferably 2% by mass or more and less. At 5 mass%.

When the liquid crystal composition of the present invention contains at least one kind of the compound represented by the above formula (i) and at least one compound of the above formula (ii), it is preferred to contain at least the compound shown below. One.

Further, when at least one compound represented by the formula (i), at least one compound represented by the formula (ii) and the compound represented by the above formula (54.2) are contained, the compound represented by the formula (54.2) The content is preferably from 0.5 to 10% by mass, more preferably from 2 to 8% by mass, even more preferably from 6 to 7% by mass, in a certain embodiment.

When at least one compound represented by the formula (i) and the compound represented by the above formula (54.4) are contained, the content of the compound represented by the formula (54.4) is preferably 0.5 to 8 by mass in one embodiment. % is more preferably 2 to 7 mass%, and particularly preferably 4 to 5 mass%.

When at least one compound represented by the formula (i), at least one compound represented by the formula (ii) and the compound represented by the above formula (26.1) are contained, the content of the compound represented by the formula (26.1), Preferred in a certain embodiment It is 0.5 to 8 mass%, more preferably 2 to 7 mass%, and particularly preferably 4 to 5 mass%.

When at least one compound represented by the formula (i), at least one compound represented by the formula (ii) and the compound represented by the above formula (42.3) are contained, the content of the compound represented by the formula (42.3), In one embodiment, it is preferably 0.5 to 5% by mass, more preferably 2 to 4% by mass, still more preferably 2 to 3% by mass.

When at least one compound represented by the formula (i), at least one compound represented by the formula (ii) and the compound represented by the above formula (31.4) are contained, the content of the compound represented by the formula (31.4), In one embodiment, it is preferably 0.5 to 5% by mass, more preferably 1 to 3% by mass, still more preferably 1 to 2% by mass.

When at least one compound represented by the formula (i), at least one compound represented by the formula (ii) and the compound represented by the above formula (39.2) are contained, the content of the compound represented by the formula (39.2), In one embodiment, it is preferably from 0.5 to 9% by mass, more preferably from 3 to 7% by mass, even more preferably from 5 to 6% by mass.

When at least one compound represented by the formula (i), at least one compound represented by the formula (ii) and the compound represented by the above formula (3.4) are contained, the content of the compound represented by the formula (3.4), In one embodiment, it is preferably from 0.5 to 7% by mass, more preferably from 2 to 6% by mass, even more preferably from 3 to 4% by mass.

When at least one compound represented by the formula (i), at least one compound represented by the formula (ii) and the compound represented by the above formula (10.1) are contained, the content of the compound represented by the formula (10.1), In one embodiment, it is preferably from 0.5 to 11% by mass, more preferably from 3 to 9% by mass, even more preferably from 7 to 8% by mass.

When at least one compound represented by the formula (i), at least one compound represented by the formula (ii) and the compound represented by the above formula (12.3) are contained, the content of the compound represented by the formula (12.3), In one embodiment The amount is preferably 0.5 to 4% by mass, more preferably 0.5 to 2% by mass, and particularly preferably 0.5 to 1% by mass.

When at least one compound represented by the formula (i), at least one compound represented by the formula (ii) and the compound represented by the above formula (6.6) are contained, the content of the compound represented by the formula (6.6), In one embodiment, it is preferably from 0.5 to 8% by mass, more preferably from 2 to 6% by mass, even more preferably from 4 to 5% by mass.

When at least one compound represented by the formula (i), at least one compound represented by the formula (ii) and the compound represented by the above formula (5.2) are contained, the content of the compound represented by the formula (5.2), In one embodiment, it is preferably from 0.5 to 15% by mass, more preferably from 9 to 13% by mass, even more preferably from 11 to 12% by mass.

When at least one compound represented by the formula (i), at least one compound represented by the formula (ii) and the compound represented by the above formula (23.2) are contained, the content of the compound represented by the formula (23.2), In one embodiment, it is preferably from 0.5 to 11% by mass, more preferably from 2 to 9% by mass, even more preferably from 5 to 8% by mass.

Further, when at least one compound represented by the formula (i) and at least one compound represented by the formula (ii) are contained, it is preferred to further contain the following compound.

When at least one compound represented by the formula (i), at least one compound represented by the formula (ii) and a compound represented by the following formula (1.3) are contained, the content of the compound represented by the formula (1.3) In one embodiment, it is preferably more than 13% by mass and 21% by mass or less, more preferably more than 13% by mass and not more than 19% by mass, and more preferably more than 13% by mass and not more than 16% by mass.

When at least one compound represented by the formula (i), at least one compound represented by the formula (ii) and a compound represented by the following formula (11.2) are contained, the content of the compound represented by the formula (11.2) In one embodiment, it is preferably more than 4% by mass and 20% by mass or less, more preferably 5% by mass or more and 18% by mass or less, and particularly preferably more than 8% by mass and not more than 18% by mass.

When at least one compound represented by the formula (i), at least one compound represented by the formula (ii) and a compound represented by the following formula (31.2) are contained, the content of the compound represented by the formula (31.3) In one embodiment, it is preferably 0.5% by mass or more and less than 8% by mass, more preferably 2% by mass or more and less than 8% by mass, and particularly preferably 5% by mass or more and less than 8% by mass.

When a compound represented by the formula (i), at least one compound represented by the formula (ii) and a compound represented by the following formula (44.1) are contained, the content of the compound represented by the formula (44.1) is contained. In one embodiment, it is preferably 0.5% by mass or more and less than 5% by mass, more preferably 1% by mass or more and less than 5% by mass, and particularly preferably 2% by mass or more and less than 5% by mass.

When at least one compound of the formula (i) is contained, When the compound represented by the formula (ii) and the compound represented by the following formula (23.1) are less, the content of the compound represented by the formula (23.1) is preferably more than 5% by mass in one embodiment. Further, it is 14% by mass or less, more preferably 6% by mass or more and 11% by mass or less, and particularly preferably more than 7% by mass and 10% by mass or less.

When at least one compound represented by the formula (i), at least one compound represented by the formula (ii) and a compound represented by the following formula (3.3) are contained, the content of the compound represented by the formula (3.3) In one embodiment, it is preferably more than 5% by mass and 20% by mass or less, more preferably more than 6% by mass and not more than 20% by mass, and more preferably more than 10% by mass and not more than 15% by mass.

When at least one compound represented by the formula (i), at least one compound represented by the formula (ii) and a compound represented by the following formula (15.1) are contained, the content of the compound represented by the formula (15.1) In one embodiment, it is preferably more than 5% by mass and not more than 14% by mass, more preferably more than 6% by mass and not more than 11% by mass, and more preferably more than 7% by mass and not more than 10% by mass.

When at least one compound represented by the formula (i), at least one compound represented by the formula (ii) and a compound represented by the following formula (37.2) are contained, the content of the compound represented by the formula (37.2) In a certain embodiment It is preferably more than 5% by mass and not more than 14% by mass, more preferably more than 6% by mass and not more than 10% by mass, and more preferably more than 6% by mass and not more than 8% by mass.

When at least one compound represented by the formula (i), at least one compound represented by the formula (ii) and a compound represented by the following formula (3.1) are contained, the content of the compound represented by the formula (3.1) In one embodiment, it is preferably more than 12% by mass and not more than 30% by mass, more preferably more than 14% by mass and not more than 30% by mass, and more preferably more than 16% by mass and not more than 25% by mass.

When at least one compound represented by the formula (i), at least one compound represented by the formula (ii) and a compound represented by the following formula (28.3) are contained, the content of the compound represented by the formula (28.3) In one embodiment, it is preferably 0.5% by mass or more and less than 5% by mass, more preferably 1% by mass or more and less than 5% by mass, and particularly preferably 2% by mass or more and less than 5% by mass.

When at least one compound represented by the formula (i), at least one compound represented by the formula (ii) and a compound represented by the following formula (51.1) are contained, the content of the compound represented by the formula (51.1) In one embodiment, it is preferably more than 7% by mass and 20% by mass or less, more preferably more than 10% by mass and not more than 20% by mass, and more preferably more than 16% by mass and not more than 20% by mass.

When at least one compound represented by the formula (i), at least one compound represented by the formula (ii) and a compound represented by the following formula (32.2) are contained, the content of the compound represented by the formula (32.2) In one embodiment, it is preferably 0.5% by mass or more and less than 5% by mass, more preferably 1% by mass or more and less than 5% by mass, and particularly preferably 2% by mass or more and less than 5% by mass.

When at least one compound represented by the formula (i), at least one compound represented by the formula (ii) and a compound represented by the following formula (32.4) are contained, the content of the compound represented by the formula (32.4) In one embodiment, it is preferably 0.5% by mass or more and less than 5% by mass, more preferably 1% by mass or more and less than 5% by mass, and particularly preferably 2% by mass or more and less than 5% by mass.

When at least one compound represented by the formula (i), at least one compound represented by the formula (ii) and a compound represented by the following formula (6.3) are contained, the content of the compound represented by the formula (6.3) In one embodiment, it is preferably more than 7% by mass and not more than 16% by mass, more preferably more than 9% by mass and not more than 13% by mass, and more preferably more than 10% by mass and not more than 12% by mass.

When at least one compound of the formula (i) is contained, When a compound represented by the formula (ii) and a compound represented by the following formula (36.1) are used, the content of the compound represented by the formula (36.1) is preferably 0.5% by mass or more in one embodiment. It is less than 4% by mass, more preferably 1% by mass or more and less than 4% by mass, particularly preferably 2% by mass or more and less than 4% by mass.

When at least one compound represented by the formula (i), at least one compound represented by the formula (ii) and a compound represented by the following formula (41.2) are contained, the content of the compound represented by the formula (41.2) In one embodiment, it is preferably 0.5% by mass or more and less than 2% by mass.

When the liquid crystal composition of the present invention contains at least one compound represented by the formula (i), at least one compound represented by the formula (ii), or a compound represented by the following formula (I-5), In the case of the compound represented by the following formula (II-2) and the compound represented by the following formula (V-2), the total content of the compounds is preferably 100% by mass of the liquid crystal composition of the present invention. It is 25 to 50% by mass, more preferably 30 to 49% by mass, particularly preferably 35 to 40% by mass, and particularly preferably 39% by mass.

The liquid crystal composition of the present invention contains at least one compound represented by the formula (i), at least one compound represented by the formula (ii), a compound represented by the following formula (I-2), The compound represented by the following formula (IX-2-3), the compound represented by the following formula (V-2), and the following formula (XIV-1-1) In the case of the compound of the present invention, the total content of the compounds is preferably from 70 to 100% by mass, more preferably from 75 to 90% by mass, even more preferably from 80 to 85% by mass, based on 100% by mass of the liquid crystal composition of the present invention. And even more preferably 81% by mass.

When the liquid crystal composition of the present invention contains at least one compound represented by the formula (i), at least one compound represented by the formula (ii), or a formula represented by the following formula (I-1-1) When a compound, a compound represented by the following formula (II-2), a compound represented by the following formula (IX-2-2), and a compound represented by the following formula (X-6), The total content of the liquid crystal composition of the present invention is preferably 40 to 70% by mass, more preferably 50 to 60% by mass, still more preferably 53 to 58% by mass, and even more preferably 55 mass%, based on 100% by mass of the liquid crystal composition of the present invention. %.

The liquid crystal composition of the present invention contains at least one compound represented by the formula (i), at least one compound represented by the formula (ii), and a compound represented by the following formula (II-2). When a compound represented by the following formula (IX-1-1), a compound represented by the following formula (IX-2-2), and a compound represented by the following formula (X-6), The total content of the liquid crystal composition of the present invention is preferably 20 to 50% by mass, more preferably 25 to 40% by mass, still more preferably 33 to 37% by mass, and still more preferably 35 mass%, based on 100% by mass of the liquid crystal composition of the present invention. %.

The liquid crystal composition of the present invention contains at least one compound represented by the formula (i), at least one compound represented by the formula (ii), a compound represented by the following formula (III), and the following When the compound represented by the formula (X-2-1) and the compound represented by the following formula (X-4-1) are used, the total content of the compounds is 100% by mass of the liquid crystal composition of the invention. It is preferably 20 to 50% by mass, more preferably 25 to 40% by mass, still more preferably 33 to 37% by mass, and still more preferably 35% by mass.

When the liquid crystal composition of the present invention contains at least one compound represented by the formula (i), at least one compound represented by the formula (ii), or a formula represented by the following formula (I-1-1) a compound, a compound represented by the following formula (I-4), a compound represented by the following formula (II-1), a compound represented by the following formula (VIII-1), and a formula (X) In the case of the compound represented by the formula -2-1), the total content of the compounds is preferably from 50 to 80% by mass, more preferably from 60 to 70% by mass, based on 100% by mass of the liquid crystal composition of the present invention. It is 63 to 68% by mass, and more preferably 66% by mass.

When the liquid crystal composition of the present invention contains at least one compound represented by the formula (i), at least one compound represented by the formula (ii), or a formula represented by the following formula (I-1-1) When a compound, a compound represented by the following formula (I-4), a compound represented by the following formula (VIII-1), and a compound represented by the following formula (X-2-1), The total content of the liquid crystal composition of the present invention is preferably 40 to 70% by mass, more preferably 50 to 65% by mass, still more preferably 55 to 60% by mass, and still more preferably 58% by mass. %.

When the liquid crystal composition of the present invention contains at least one compound represented by the formula (i), at least one compound represented by the formula (ii) and a compound represented by the following formula (X-1-1) In the case of the compound, the total content of the compounds is preferably from 10 to 25% by mass, more preferably from 10 to 20% by mass, even more preferably from 12 to 17% by mass, based on 100% by mass of the liquid crystal composition of the present invention. Especially better is 15% by mass.

When the liquid crystal composition of the present invention contains at least one compound represented by the formula (i), at least one compound represented by the formula (ii), or a compound represented by the following formula (I-5), a compound represented by the following formula (II-2), When a compound represented by the following formula (IX-2-2), a compound represented by the following formula (X-1-2), and a compound represented by the following formula (X-3-1), The total content of the compound is preferably from 25 to 55% by mass, more preferably from 30 to 45% by mass, even more preferably from 35 to 40% by mass, and particularly preferably from 100% by mass of the liquid crystal composition of the present invention. 37% by mass.

The liquid crystal composition of the present invention contains at least one compound represented by the formula (i), at least one compound represented by the formula (ii), a compound represented by the following formula (III), and the following When the compound represented by the formula (X-1-2) and the compound represented by the following formula (XIV-2-2) are used, the total content of the compounds is 100% by mass of the liquid crystal composition of the invention. It is preferably 25 to 55% by mass, more preferably 30 to 45% by mass, still more preferably 37 to 42% by mass, and even more preferably 39% by mass.

(When the liquid crystal composition of the present invention contains at least two kinds of compounds represented by the formula (i) and at least one type of compound represented by the formula (ii))

The liquid crystal composition of the present invention contains a compound represented by the following formula (45.2) and at least one kind of the compound represented by the following formula (4) as at least one kind of the compound represented by the formula (i); In the case of the compound represented by the formula (4), the content of the compound represented by the formula (45.2) is preferably 0.5% by mass or more and less than 3% by mass, more preferably 1% by mass or more and less than the amount of the compound represented by the formula (45.2). 3% by mass, particularly preferably 2% by mass or more and less than 3% by mass.

When the liquid crystal composition of the present invention contains at least two kinds of the compound represented by the formula (i) and at least the compound represented by the formula (ii) In the case of the compound represented by the following formula (19.2), the content of the compound represented by the formula (19.2) is preferably 0.5% by mass or more and less than 5% by mass, more preferably 1% by mass or more, in one embodiment. It is less than 5% by mass, and particularly preferably 3% by mass or more and less than 5% by mass.

When the liquid crystal composition of the present invention contains at least two kinds of compounds represented by the general formula (i) and at least a compound represented by the following formula (19.4) as a compound represented by the general formula (ii), the formula (19.4) In a certain embodiment, the content of the compound shown is preferably 0.5% by mass or more and less than 5% by mass, more preferably 1% by mass or more and less than 5% by mass, and particularly preferably 3% by mass or more and less. At 5 mass%.

Further, when the liquid crystal composition of the present invention contains at least two kinds of compounds represented by the formula (i) and at least one compound represented by the formula (ii), it is preferred to further contain the following compounds.

In addition, when at least two kinds of compounds represented by the formula (i) and at least one compound represented by the formula (ii) and the compound represented by the above formula (44.1) are contained, the formula (44.1) is shown. In a certain embodiment, the content of the compound is preferably from 0.5 to 7% by mass, more preferably from 1 to 5% by mass, even more preferably from 3 to 4% by mass.

When at least two kinds of compounds represented by the formula (i) and at least one compound represented by the formula (ii) and the compound represented by the above formula (44.2) are contained, the compound represented by the formula (44.2) The content is preferably from 0.5 to 10% by mass, more preferably from 1 to 9% by mass, even more preferably from 3 to 8% by mass, in a certain embodiment.

When at least two kinds of compounds represented by the formula (i) and at least one compound represented by the formula (ii) and the compound represented by the above formula (31.4) are contained, the compound represented by the formula (31.4) The content is preferably from 0.5 to 5% by mass, more preferably from 0.5 to 3% by mass, even more preferably from 1 to 2% by mass, in a certain embodiment.

When at least two types of compounds represented by the formula (i) and at least one compound represented by the formula (ii) and the compound represented by the above formula (3.4) are contained, the compound represented by the formula (3.4) The content is preferably from 0.5 to 7% by mass, more preferably from 1 to 6% by mass, even more preferably from 3 to 4% by mass, in a certain embodiment.

When at least two types of compounds represented by the formula (i) and at least one compound represented by the formula (ii) and the compound represented by the above formula (6.6) are contained, the compound represented by the formula (6.6) The content is preferably in one embodiment It is 0.5 to 8% by mass, more preferably 2 to 6% by mass, and particularly preferably 4 to 5% by mass.

When at least two kinds of the compound represented by the formula (i) and at least one compound represented by the formula (ii) and the compound represented by the above formula (23.2) are contained, the compound represented by the formula (23.2) The content is preferably from 0.5 to 11% by mass, more preferably from 3 to 9% by mass, even more preferably from 5 to 8% by mass, in a certain embodiment.

Further, when at least two kinds of compounds represented by the formula (i) are contained, it is preferred to contain the following compounds at the same time.

When at least two kinds of compounds represented by the formula (i) and at least one compound represented by the formula (ii) and a compound represented by the following formula (1.3) are contained, the compound represented by the formula (1.3) In a certain embodiment, the content is preferably more than 10% by mass and not more than 19% by mass, more preferably more than 10% by mass and not more than 16% by mass, and more preferably more than 10% by mass and not more than 13% by mass. .

When at least two kinds of compounds represented by the formula (i) and at least one compound represented by the formula (ii) and a compound represented by the following formula (2.2) are contained, the compound represented by the formula (2.2) In one embodiment, the content is preferably more than 30% by mass and not more than 45% by mass, more preferably more than 32% by mass and not more than 40% by mass, and more preferably more than 33% by mass and not more than 39% by mass. .

When at least two types of compounds represented by the formula (i), at least one compound represented by the formula (ii) and a compound represented by the following formula (26.2) are contained, the compound represented by the formula (26.2) Content in a certain form The state is preferably 0.5 to less than 14% by mass, more preferably 2% by mass or more and less than 14% by mass, and particularly preferably 2% by mass or more and less than 10% by mass.

When at least two types of compounds represented by the formula (i), at least one compound represented by the formula (ii), and a compound represented by the following formula (11.1) are contained, the compound represented by the formula (11.1) In a certain embodiment, the content is preferably more than 12% by mass and 21% by mass or less, more preferably 13% by mass or more and 18% by mass or less, and particularly preferably more than 13% by mass and not more than 17% by mass. .

When at least two kinds of compounds represented by the formula (i) and at least one compound represented by the formula (ii) and a compound represented by the following formula (11.2) are contained, the compound represented by the formula (11.2) In a certain embodiment, the content is preferably more than 4% by mass and not more than 20% by mass, more preferably more than 8% by mass and not more than 20% by mass, and more preferably more than 8% by mass and not more than 18% by mass. .

When at least two kinds of compounds represented by the formula (i), at least one compound represented by the formula (ii) and a compound represented by the following formula (31.2) are contained, the compound represented by the formula (31.2) In a certain embodiment, the content is preferably 0.5% by mass or more and less than 8% by mass, more preferably 2% by mass or more and less than 8% by mass, and particularly preferably 5% by mass or more and less than 8% by mass. .

When at least two kinds of compounds represented by the formula (i) and at least one compound represented by the formula (ii) and a compound represented by the following formula (23.1) are contained, the compound represented by the formula (23.1) In a certain embodiment, the content is preferably more than 3% by mass and not more than 14% by mass, more preferably more than 5% by mass and not more than 11% by mass, and more preferably more than 7% by mass and not more than 11% by mass. .

When at least two types of compounds represented by the formula (i) and at least one compound represented by the formula (ii) and a compound represented by the following formula (3.3) are contained, the compound represented by the formula (3.3) In a certain embodiment, the content is preferably more than 5% by mass and 20% by mass or less, more preferably more than 8% by mass and not more than 20% by mass, and more preferably more than 10% by mass and not more than 15% by mass. .

When at least two kinds of compounds represented by the formula (i), at least one compound represented by the formula (ii) and a compound represented by the following formula (3.1) are contained, the compound represented by the formula (3.1) In a certain embodiment, the content is preferably more than 6% by mass and not more than 35% by mass, more preferably more than 10% by mass and not more than 35% by mass, and more preferably more than 15% by mass and not more than 25% by mass. .

When at least two types of compounds represented by the formula (i) are contained, When the compound represented by the formula (ii) and the compound represented by the following formula (28.3) are at least one compound, the content of the compound represented by the formula (28.3) is preferably 0.5% by mass or more in one embodiment. It is less than 5% by mass, more preferably 1% by mass or less and less than 5% by mass, and particularly preferably 1% by mass or more and less than 3% by mass.

When at least two kinds of compounds represented by the formula (i) and at least one compound represented by the formula (ii) and a compound represented by the following formula (51.1) are contained, the compound represented by the formula (51.1) In a certain embodiment, the content is preferably more than 5% by mass and not more than 25% by mass, more preferably more than 8% by mass and not more than 25% by mass, and more preferably more than 15% by mass and not more than 20% by mass. .

When at least two kinds of compounds represented by the formula (i), at least one compound represented by the formula (ii) and a compound represented by the following formula (32.2) are contained, the compound represented by the formula (32.2) In a certain embodiment, the content is preferably 0.5% by mass or more and less than 5% by mass, more preferably 1% by mass or more and less than 5% by mass, and particularly preferably 2% by mass or more and less than 5% by mass. .

When at least two kinds of compounds represented by the formula (i) and at least one compound represented by the formula (ii) and a compound represented by the following formula (32.4) are contained, the compound represented by the formula (32.4) Content in a certain form The state is preferably 0.5% by mass or more and less than 5% by mass, more preferably 1% by mass or more and less than 5% by mass, and particularly preferably 2% by mass or more and less than 5% by mass.

When the liquid crystal composition of the present invention contains at least two kinds of compounds represented by the general formula (i) and at least one kind of the compound represented by the general formula (ii), the total content of the compounds is the liquid crystal composition of the present invention. The content of 100% by mass is preferably 5 to 25% by mass, more preferably 10 to 20% by mass, still more preferably 12 to 17% by mass, and still more preferably 13 to 16% by mass.

The liquid crystal composition of the present invention contains at least two kinds of compounds represented by the formula (i), at least one type of compound represented by the formula (ii), and represented by the following formula (I-1-1). a compound, a compound represented by the following formula (I-5), a compound represented by the following formula (II-2), a compound represented by the following formula (V-2), and a formula (VIII) In the case of the compound of the present invention, the total content of the compounds is preferably from 60 to 85% by mass, more preferably from 65 to 80% by mass, even more preferably 70% by mass based on 100% by mass of the liquid crystal composition of the present invention. ~75% by mass, and more preferably 73% by mass.

The liquid crystal composition of the present invention contains at least two kinds of compounds represented by the formula (i), at least one compound represented by the formula (ii), and a compound represented by the following formula (I-2). a compound represented by the following formula (IX-2-3), a compound represented by the following formula (V-2), a compound represented by the following formula (VIII-1), and a formula (XIV) In the case of the compound represented by the formula -1), the total content of the compounds is preferably from 90 to 100% by mass, more preferably from 95 to 100% by mass, based on 100% by mass of the liquid crystal composition of the present invention. for 98 to 100% by mass, and more preferably 100% by mass.

The liquid crystal composition of the present invention contains at least two kinds of compounds represented by the formula (i), at least one type of compound represented by the formula (ii), and represented by the following formula (I-1-1). a compound, a compound represented by the following formula (I-1-2), a compound represented by the following formula (II-2), a compound represented by the following formula (IX-2-2), and the following When the compound represented by the formula (VIII-1) and the compound represented by the following formula (X-6) are used, the total content of the compounds is preferably 92% by mass based on 100% by mass of the liquid crystal composition of the invention. ~100% by mass, more preferably 96 to 100% by mass, particularly preferably 98 to 100% by mass, and even more preferably 100% by mass.

The liquid crystal composition of the present invention contains at least two kinds of compounds represented by the formula (i), at least one type of compound represented by the formula (ii), and represented by the following formula (I-1-1). a compound, a compound represented by the following formula (I-1-2), a compound represented by the following formula (II-2), a compound represented by the following formula (IX-1-1), and the following When the compound represented by the formula (IX-2-2) and the compound represented by the following formula (X-6) are used, the total content of the compounds is preferably 100% by mass of the liquid crystal composition of the invention. It is 93 to 100% by mass, more preferably 97 to 100% by mass, particularly preferably 99 to 100% by mass, and particularly preferably 100% by mass.

(When the liquid crystal composition of the present invention contains at least three kinds of compounds represented by the general formula (i) and at least one compound represented by the general formula (ii))

The liquid crystal composition of the present invention contains at least two kinds of compounds represented by the following formula (45.2) and a compound represented by the formula (i) and at least one type of the compound represented by the formula (i). Formula (ii) In the case of the compound, the content of the compound represented by the formula (45.2) is preferably 0.5% by mass or more and less than 3% by mass, more preferably 1% by mass or more and less than 3% by mass, particularly in one embodiment. It is preferably 2% by mass or more and less than 3% by mass.

The liquid crystal composition of the present invention contains at least two kinds of compounds represented by the following formula (45.4) and a compound represented by the formula (i) and at least one type of the compound represented by the formula (i). In the case of the compound represented by the formula (ii), the content of the compound represented by the formula (45.4) is preferably from 0.5 to 7% by mass, more preferably from 1 to 6% by mass, particularly preferably from 2 to 2% by weight in one embodiment. 4% by mass.

When the liquid crystal composition of the present invention contains at least three kinds of compounds represented by the general formula (i) and at least a compound represented by the following formula (18.1) as a compound represented by the general formula (ii), the formula (18.1) In a certain embodiment, the content of the compound is preferably more than 2% by mass and 11% by mass or less, more preferably 2% by mass or more and 8% by mass or less, and particularly preferably more than 2% by mass. 5 mass% or less.

Further, when at least three types of compounds represented by the formula (i) and at least one compound represented by the formula (ii) are contained, it is preferred to further contain the following compounds.

Further, when at least three kinds of compounds represented by the formula (i) and at least one compound represented by the formula (ii) and the compound represented by the above formula (3.1) are contained, the formula (3.1) The content of the compound is preferably from 0.5 to 25% by mass, more preferably from 10 to 24% by mass, even more preferably from 21 to 22% by mass, in a certain embodiment.

Further, when at least three kinds of compounds represented by the formula (i), at least one compound represented by the formula (ii), and the compound represented by the above formula (3.3) are contained In the embodiment, the content of the compound represented by the formula (3.3) is preferably from 0.5 to 17% by mass, more preferably from 7 to 15% by mass, even more preferably from 13 to 14% by mass.

Further, when at least three kinds of compounds represented by the formula (i) and at least one compound represented by the formula (ii) and the compound represented by the above formula (3.4) are contained, the formula (3.4) The content of the compound is preferably from 0.5 to 7% by mass, more preferably from 1 to 5% by mass, even more preferably from 3 to 4% by mass, in a certain embodiment.

Further, when at least three kinds of compounds represented by the formula (i) and at least one compound represented by the formula (ii) and the compound represented by the above formula (2.3) are contained, the formula (2.3) The content of the compound is preferably from 0.5 to 18% by mass, more preferably from 7 to 17% by mass, even more preferably from 14 to 15% by mass, in a certain embodiment.

Further, when at least three kinds of compounds represented by the formula (i) and at least one compound represented by the formula (ii) and the compound represented by the above formula (6.6) are contained, the formula (6.6) is shown. In a certain embodiment, the content of the compound is preferably from 0.5 to 8% by mass, more preferably from 2 to 7% by mass, even more preferably from 4 to 5% by mass.

Further, when at least three kinds of compounds represented by the formula (i) and at least one compound represented by the formula (ii) and the compound represented by the above formula (11.1) are contained, the formula (11.1) is shown. The content of the compound is preferably from 0.5 to 19% by mass, more preferably from 7 to 17% by mass, even more preferably from 15 to 16% by mass, in a certain embodiment.

Further, when at least three kinds of compounds represented by the formula (i) and at least one compound represented by the formula (ii) and the compound represented by the above formula (11.2) are contained In the embodiment, the content of the compound represented by the formula (11.2) is preferably from 0.5 to 14% by mass, more preferably from 5 to 13% by mass, even more preferably from 10 to 11% by mass.

Further, when at least three kinds of compounds represented by the formula (i) and at least one compound represented by the formula (ii) and the compound represented by the above formula (23.1) are contained, the formula (23.1) The content of the compound is preferably from 0.5 to 12% by mass, more preferably from 3 to 10% by mass, even more preferably from 4 to 9% by mass, in a certain embodiment.

Further, when at least three compounds represented by the formula (i) and at least one compound represented by the formula (ii) and the compound represented by the above formula (23.2) are contained, the formula (23.2) is as shown. In a certain embodiment, the content of the compound is preferably from 0.5 to 11% by mass, more preferably from 3 to 10% by mass, even more preferably from 5 to 8% by mass.

Further, when at least three kinds of compounds represented by the formula (i) and at least one compound represented by the formula (ii) and the compound represented by the above formula (51.1) are contained, the formula (51.1) The content of the compound is preferably from 0.5 to 23% by mass, more preferably from 10 to 22% by mass, even more preferably from 19 to 20% by mass, in a certain embodiment.

Further, when at least three kinds of compounds represented by the formula (i) and at least one compound represented by the formula (ii) and the compound represented by the above formula (32.2) are contained, the formula (32.2) The content of the compound is preferably from 0.5 to 8% by mass, more preferably from 2 to 7% by mass, even more preferably from 4 to 5% by mass, in a certain embodiment.

Further, a compound represented by the formula (i) and at least one compound represented by the formula (ii) containing at least three kinds of compounds represented by the above formula (32.4) In the case of the compound, the content of the compound represented by the formula (32.4) is preferably from 0.5 to 8% by mass, more preferably from 2 to 6% by mass, even more preferably from 4 to 5% by mass, in a certain embodiment.

Further, when at least three types of compounds represented by the formula (i) and at least one compound represented by the formula (ii) are contained, it is preferred to further contain the following compounds.

When at least three kinds of compounds represented by the formula (i) and at least one compound represented by the formula (ii) and a compound represented by the following formula (1.3) are contained, the compound represented by the formula (1.3) In a certain embodiment, the content is preferably more than 5% by mass and not more than 14% by mass, more preferably more than 7% by mass and not more than 14% by mass, and more preferably more than 9% by mass and not more than 12% by mass. .

When at least three kinds of compounds represented by the formula (i) and at least one compound represented by the formula (ii) and a compound represented by the following formula (26.2) are contained, the compound represented by the formula (26.2) The content is preferably more than 1% by mass and less than 14% by mass, more preferably 1% by mass or more and less than 10% by mass, particularly preferably 2% by mass or more and less than 9% by mass in one embodiment. %.

When at least three kinds of compounds represented by the formula (i) and at least one compound represented by the formula (ii) and a compound represented by the following formula (2.4) are contained, the compound represented by the formula (2.4) Content in a certain embodiment It is preferably more than 1% by mass and less than 15% by mass, more preferably 6% by mass or more and less than 15% by mass, and particularly preferably 11% by mass or more and less than 15% by mass.

When the liquid crystal composition of the present invention contains at least three kinds of compounds represented by the general formula (i) and at least one kind of the compound represented by the general formula (ii), the total content of the compounds is the liquid crystal composition of the present invention. The content of 100% by mass is preferably 5 to 25% by mass, more preferably 10 to 20% by mass, still more preferably 12 to 17% by mass, and still more preferably 13 to 16% by mass.

The liquid crystal composition of the present invention contains at least three kinds of compounds represented by the formula (i), at least one type of compound represented by the formula (ii), and represented by the following formula (I-1-1). a compound, a compound represented by the following formula (I-1-2), a compound represented by the following formula (I-5), a compound represented by the following formula (II-2), and a compound of the following formula: When the compound represented by the formula (V-2) and the compound represented by the following formula (VIII-1) are used, the total content of the compounds is preferably from 93 to 100 in 100% by mass of the liquid crystal composition of the present invention. The mass% is more preferably 97 to 100% by mass, particularly preferably 99 to 100% by mass, and particularly preferably 100% by mass.

The liquid crystal composition of the present invention contains at least three kinds of compounds represented by the formula (i), at least one compound represented by the formula (ii), and a compound represented by the following formula (I-2). a compound represented by the following formula (IX-2-3), a compound represented by the following formula (V-2), a compound represented by the following formula (VIII-1), and a formula (XIV) In the case of the compound represented by the formula -1), the total content of the compounds is preferably from 93 to 100% by mass, more preferably from 97 to 100% by mass, based on 100% by mass of the liquid crystal composition of the present invention. for 99 to 100% by mass, and more preferably 100% by mass.

(When the liquid crystal composition of the present invention contains at least one kind of the compound represented by the formula (i) and at least two compounds of the formula (ii))

When the liquid crystal composition of the present invention contains two kinds of compounds represented by the formula (ii), the compound represented by the formula (i) preferably contains one type.

Specifically, when the liquid crystal composition of the present invention contains two kinds of the compounds represented by the formula (ii), it is preferred to contain the compound represented by the formula (i) as shown by the following formulas (45.1) to (45.4). Only one species of the compounds. Further, it is preferred to contain a compound represented by the formula (45.2) or a compound represented by the formula (45.3).

Further, when the liquid crystal composition of the present invention contains at least one kind of the compound represented by the formula (i) and the compound represented by the formula (ii) When at least one of the compound represented by the following formula (18.3) and the other compound represented by the formula (ii) is present, the content of the compound represented by the formula (18.3) is preferably from 0.5 to 11 in one embodiment. The mass% is more preferably 4 to 9% by mass, and particularly preferably 7 to 8% by mass.

Further, when the liquid crystal composition of the present invention contains at least one kind of compound represented by the formula (i) and a compound represented by the following formula (18.4) as a compound represented by the formula (ii), and other formulas ( In the case of at least one of the compounds shown in the formula (ii), the content of the compound represented by the formula (18.4) is preferably more than 6% by mass and 15% by mass or less, more preferably 6% by mass in a certain embodiment. It is more than 12% by mass, and more preferably more than 6% by mass and not more than 9% by mass.

Further, when the liquid crystal composition of the present invention contains at least one kind of compound represented by the formula (i) and a compound represented by the following formula (19.2) as a compound represented by the formula (ii), and other formulas In the case of at least one of the compounds (ii), the content of the compound represented by the formula (19.2) is preferably 0.5% by mass or more and less than 5% by mass, more preferably 1% by mass, in one embodiment. The above is less than 5% by mass, and particularly preferably 2% by mass or more.

Further, when the liquid crystal composition of the present invention contains at least one kind of the compound represented by the formula (i) and the compound represented by the formula (ii) When at least one of the compound represented by the following formula (19.31) and the other compound represented by the formula (ii) is used, the content of the compound represented by the formula (19.31) is preferably 0.5% by mass in one embodiment. The above is less than 5% by mass, more preferably 1% by mass or more and less than 5% by mass, and particularly preferably 2% by mass or more.

In addition, when the liquid crystal composition of the present invention contains at least two kinds of compounds represented by the following formula (45.3) and a compound represented by the formula (ii) as a compound represented by the formula (i), In a certain embodiment, the content of the compound shown in 45.3) is preferably 0.5% by mass or more and less than 7% by mass, more preferably 1% by mass or more and less than 7% by mass, and particularly preferably 4% by mass or more. And less than 7 mass%.

When at least one type of the compound represented by the formula (i) and at least two types of the compound of the formula (ii) are contained, it is preferred to further contain the compound shown below.

When at least one compound represented by the formula (i) and at least two compounds represented by the formula (ii) and the compound represented by the above formula (5.2) are contained, the compound represented by the formula (5.2) The content is preferably from 0.5 to 15% by mass, more preferably from 5 to 15% by mass, even more preferably from 11 to 12% by mass, in a certain embodiment.

When at least one compound represented by the formula (i) and at least two compounds represented by the formula (ii) and the compound represented by the above formula (10.1) are contained, the compound represented by the formula (10.1) The content is preferably from 0.5 to 11% by mass, more preferably from 4 to 9% by mass, even more preferably from 7 to 8% by mass, in a certain embodiment.

When at least one compound represented by the formula (i) and at least two compounds represented by the formula (ii) and the compound represented by the above formula (12.3) are contained, the compound represented by the formula (12.3) The content is preferably from 0.1 to 4% by mass, more preferably from 0.1 to 2% by mass, even more preferably from 0.1 to 1% by mass, in a certain embodiment.

When at least one compound represented by the formula (i) and at least two compounds represented by the formula (ii) and the compound represented by the above formula (26.1) are contained, the compound represented by the formula (26.1) The content is preferably from 0.5 to 8% by mass, more preferably from 2 to 6% by mass, even more preferably from 4 to 5% by mass, in a certain embodiment.

When at least one compound represented by the formula (i) and at least two compounds represented by the formula (ii) and the compound represented by the above formula (39.2) are contained, The content of the compound represented by the formula (39.2) is preferably from 0.5 to 9% by mass, more preferably from 3 to 7% by mass, even more preferably from 5 to 6% by mass, in a certain embodiment.

When at least one compound represented by the formula (i) and at least two compounds represented by the formula (ii) and the compound represented by the above formula (42.3) are contained, the compound represented by the formula (42.3) The content is preferably from 0.5 to 6% by mass, more preferably from 2 to 4% by mass, even more preferably from 2 to 3% by mass, in a certain embodiment.

Further, when at least one type of the compound represented by the formula (i) and at least two compounds represented by the formula (ii) are contained, it is preferred to further contain the following compound.

When at least one compound represented by the formula (i), at least two compounds represented by the formula (ii), and a compound represented by the following formula (1.3) are contained, the compound represented by the formula (1.3) In a certain embodiment, the content is preferably more than 12% by mass and 21% by mass or less, more preferably 12% by mass or more and 18% by mass or less, and particularly preferably more than 12% by mass and 15% by mass or less. .

When at least one compound represented by the formula (i), at least two compounds represented by the formula (ii), and a compound represented by the following formula (5.4) are contained, the compound represented by the formula (5.4) In a certain embodiment, the content is preferably more than 8% by mass and not more than 11% by mass, more preferably more than 8% by mass and not more than 14% by mass, and more preferably more than 8% by mass and not more than 17% by mass. .

When at least one of the compounds represented by the formula (i) and at least two compounds represented by the formula (ii) are contained, the compound represented by the following formula (36.2) In the case of the compound, the content of the compound represented by the formula (36.2) is preferably more than 4% by mass and 13% by mass or less, more preferably 5% by mass or more and 10% by mass or less, in particular a certain embodiment. The ratio is more than 5 mass% and not more than 7% by mass.

When at least one compound represented by the formula (i), at least two compounds represented by the formula (ii), and a compound represented by the following formula (36.1) are contained, the compound represented by the formula (36.1) In a certain embodiment, the content is preferably 0.5% by mass or more and less than 4% by mass, more preferably 1% by mass or more and less than 4% by mass, particularly preferably 2% by mass or more and less than 4% by mass. .

When at least one compound represented by the formula (i), at least two compounds represented by the formula (ii), and a compound represented by the following formula (15.1) are contained, the compound represented by the formula (15.1) In a certain embodiment, the content is preferably more than 5% by mass and not more than 14% by mass, more preferably more than 5% by mass and not more than 11% by mass, and more preferably more than 5% by mass and not more than 8% by mass.

When the liquid crystal composition of the present invention contains at least one kind of the compound represented by the formula (i) and at least two kinds of the compound represented by the formula (ii), the total content of the compounds is the liquid crystal composition of the present invention. The content of 100% by mass is preferably 10 to 30% by mass, more preferably 12 to 25% by mass, still more preferably 18 to 25% by mass.

The liquid crystal composition of the present invention contains at least one type of compound represented by the formula (i), at least two types of compounds represented by the formula (ii), and a compound represented by the following formula (I-4). When a compound represented by the following formula (III), a compound represented by the following formula (X-2-1), and a compound represented by the following formula (X-4-1) are used, the total of these compounds The content is preferably 30 to 60% by mass, more preferably 45 to 50% by mass, even more preferably 42 to 46% by mass, and still more preferably 44% by mass, based on 100% by mass of the liquid crystal composition of the present invention.

The liquid crystal composition of the present invention contains at least one kind of the compound represented by the formula (i), at least two kinds of the compound represented by the formula (ii), and represented by the following formula (I-1-1). a compound, a compound represented by the following formula (I-4), a compound represented by the following formula (II-1), a compound represented by the following formula (VIII-1), and a formula (X) In the case of the compound of the formula 2-1, the total content of the compounds is preferably from 50 to 80% by mass, more preferably from 60 to 75% by mass, based on 100% by mass of the liquid crystal composition of the present invention. It is 64 to 69% by mass, and more preferably 66% by mass.

The liquid crystal composition of the present invention contains at least one kind of the compound represented by the formula (i), at least two kinds of the compound represented by the formula (ii), and the compound represented by the following formula (X-1-1). In the case of the compound, the total content of the compounds is preferably from 10 to 40% by mass, more preferably from 15 to 35% by mass, even more preferably from 18 to 32% by mass, based on 100% by mass of the liquid crystal composition of the present invention. Especially better is 19~31% by mass.

The liquid crystal composition of the present invention contains at least one kind of the compound represented by the formula (i), at least two kinds of the compound represented by the formula (ii), and represented by the following formula (I-1-1). a compound, a compound represented by the following formula (I-4), a compound represented by the following formula (VIII-1), and a formula (X-2-1) represented by the following formula (X-2-1) In the case of the compound of the present invention, the total content of the compounds is preferably from 45 to 75% by mass, more preferably from 50 to 65% by mass, even more preferably from 55 to 60% by mass, based on 100% by mass of the liquid crystal composition of the present invention. And even more preferably, it is 58% by mass.

The liquid crystal composition of the present invention may further contain at least one compound of 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 two or more non-adjacent-CH ₂ - groups may independently be used. Substituted by -CH=CH-, -C≡C-, -O-, -CO-, -COO- or -OCO-, OL represents 0, 1, 2 or 3, and B ^L1 , B ^L2 and B ^L3 are each independent Ground indication

(a) 1,4-cyclohexylene (one -CH ₂ - or at least two non-adjacent -CH ₂ - may be substituted by -O-), and (b) 1,4-stretch a group of a group consisting of a phenyl group (one -CH= or a non-contiguous at least two -CH= may be substituted by -N=), the above-mentioned group (a), group (b) At least one hydrogen atom in each of them may be independently substituted by 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-, when 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 plural, they may be the same or different, but Except for the compound represented by the above formula (ii).

The type of the compound which can be combined is not particularly limited, but is suitably used in combination according to the desired properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence (refractive index anisotropy). The type of the compound to be used is, for example, one type in one embodiment of the present invention. Alternatively, in another embodiment of the present invention, there are two types. Further, in still another embodiment of the present invention, there are three types. Furthermore, in still 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 still 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 the present invention, it is 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 solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dripping trace, and afterimage. The required performance such as dielectric anisotropy is appropriately adjusted.

The content of the above compound is, for example, 1 to 95% by mass in one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Alternatively, in another embodiment of the present invention, the content is 10 to 95% by mass. Furthermore, in another embodiment of the present invention, the content is 20 to 95% by mass. Furthermore, in still another embodiment of the present invention, the content is 30 to 95% by mass. Moreover, in another implementation of the present invention In the form, the content is 40 to 95% by mass. Furthermore, in another embodiment of the present invention, the content is 50 to 95% by mass. Furthermore, in still another embodiment of the present invention, the content is 55 to 95% by mass. Furthermore, in still another embodiment of the present invention, the content is 60 to 95% by mass. Furthermore, in another embodiment of the present invention, the content is 65 to 95% by mass. Furthermore, in another embodiment of the present invention, the content is 70 to 95% by mass. Furthermore, in still another embodiment of the present invention, the content is 75 to 95% by mass. Furthermore, in still another embodiment of the present invention, the content is 80 to 95% by mass.

In addition, the content of the above compound is, for example, 1 to 95% in one embodiment of the present invention, 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 85%. Furthermore, in still another embodiment of the present invention, the content is 1 to 75%. Furthermore, in still another embodiment of the present invention, the content is 1 to 65%. Furthermore, in another embodiment of the present invention, the content is 1 to 55%. Furthermore, in another embodiment of the present invention, the content is 1% to 45%. Furthermore, in still another embodiment of the present invention, the content is 1 to 35%. Furthermore, in still another embodiment of the present invention, the content is 1 to 25%.

When the viscosity of the liquid crystal composition of the present invention is kept low and a liquid crystal composition having a high reaction rate is required, it is preferable that the above lower limit value is high and the upper limit value is high. In addition, when the liquid crystal composition of the liquid crystal composition of the present invention is kept high and a liquid crystal composition having good temperature stability is required, it is preferable that the lower limit value is higher and the upper limit value is higher. Further, in order to increase the dielectric anisotropy in order to maintain a low driving voltage, the above lower limit is preferable. The value is low and the upper limit is lower.

R ^L1 and R ^L2 , when the ring structure to which the bond is bonded is a phenyl group (aromatic), it is preferably a linear alkyl group having 1 to 5 carbon atoms, and a linear carbon number of 1 to 4 (or more) alkoxy or an alkenyl group having 4 to 5 carbon atoms, wherein the ring structure to which the bond is bonded is cyclohexane, meme and In the case of a saturated ring structure such as an alkane, it is preferably 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 carbon. An alkenyl group having 2 to 5 atoms.

When the chemical stability of the liquid crystal composition is required, the compound represented by the formula (L) preferably has no chlorine atom in its 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. Except for the compound represented by the above formula (ii).

The type of the compound which can be combined is not particularly limited, but it is suitably used in combination according to the required properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one type in one embodiment of the present invention. Alternatively, in another embodiment of the present invention, there are two types. Further, in still another embodiment of the present invention, there are three types. Furthermore, in another implementation of the present invention There are 4 types in the form. Furthermore, in another embodiment of the present invention, it is 5 or more types. Furthermore, in another embodiment of the present invention, it is six or more types.

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 solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dripping trace, and afterimage. The required performance such as dielectric anisotropy is appropriately adjusted.

The content of the compound represented by the above formula (I) is, for example, 3 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. Alternatively, in another embodiment of the present invention, the content is 15 to 75% by mass. Further, in still another embodiment of the present invention, the content is 18 to 75% by mass. Furthermore, in still another embodiment of the present invention, the content is 20 to 75% by mass. Furthermore, in another embodiment of the present invention, the content is 29 to 75% by mass. Furthermore, in another embodiment of the present invention, the content is 35 to 75% by mass. Furthermore, in still another embodiment of the present invention, the content is 42 to 75% by mass. Furthermore, in still another embodiment of the present invention, the content is 47 to 75% by mass. Furthermore, in another embodiment of the present invention, the content is 53 to 75% by mass. Furthermore, in another embodiment of the present invention, the content is 56 to 75% by mass. Furthermore, in still another embodiment of the present invention, the content is 60 to 75% by mass. Furthermore, in still another embodiment of the present invention, the content is 65 to 75% by mass.

In addition, the content of the compound represented by the above formula (I) is, for example, 3 to 65% by mass in one embodiment of the present invention, 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 from 3 to 55% by mass. Moreover, another aspect of the present invention In the embodiment, the content is 3 to 50% by mass. Furthermore, in still another embodiment of the present invention, the content is 3 to 45% by mass. Furthermore, in another embodiment of the present invention, the content is 3 to 40% by mass. Furthermore, in another embodiment of the present invention, the content is from 3 to 35% by mass. Furthermore, in still another embodiment of the present invention, the content is 3 to 30% by mass.

When the viscosity of the liquid crystal composition of the present invention is kept low and a liquid crystal composition having a high reaction rate is required, it is preferable that the above lower limit value is high and the upper limit value is high. In addition, when the Tni of the liquid crystal composition of the present invention is kept high and a liquid crystal composition having good temperature stability is required, it is preferable that the above lower limit is moderate and the upper limit is moderate. Further, in order to increase the dielectric anisotropy in order to maintain a low driving voltage, it is preferable that the above lower limit value is lower and the upper limit value is lower.

R ¹¹ and R ¹² , when the ring structure to which the bond is bonded is a phenyl group (aromatic), it is preferably a linear alkyl group having 1 to 5 carbon atoms, and a linear carbon number of 1 to 4 Alkenyloxy or alkenyl group having 4 to 5 carbon atoms, when the ring structure to which it is bonded is cyclohexane, meme and In the case of a saturated ring structure such as an alkane, it is preferably a linear alkyl group having 1 to 5 carbon atoms, a linear alkoxy group having 1 to 4 carbon atoms or a linear carbon number of 2 to 5 Alkenyl.

The compound represented by the above formula (I) is preferably at least one compound selected from the group 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, but it is suitably used in combination according to the required properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one type in one embodiment of the present invention. Alternatively, in another embodiment of the present invention, there are two types. Further, in still another embodiment of the present invention, there are three types. Furthermore, in still another embodiment of the present invention, there are four types. Furthermore, in another embodiment of the present invention, it is five or more types.

In the liquid crystal composition of the present invention, when the compound represented by the formula (I-1) is blended, the content of the compound must be in accordance with solubility at low temperature, transfer temperature, electrical reliability, birefringence, and process. The performance required for suitability, dripping marks, afterimage, dielectric anisotropy, etc., is suitably adjusted.

The content of the compound represented by the above formula (I-1) is, for example, in one embodiment of the present invention, the content of the liquid crystal composition of the present invention is from 3 to 70% by mass. Alternatively, in another embodiment of the present invention, the content is 15 to 70% by mass. Further, in still another embodiment of the present invention, the content is from 18 to 70% by mass. Furthermore, in still another embodiment of the present invention, the content is 25 to 70% by mass. Furthermore, in another embodiment of the present invention, the content is 29 to 70% by mass. Furthermore, in another embodiment of the present invention, the content is 31 to 70% by mass. Furthermore, in still another embodiment of the present invention, the content is 35 to 70% by mass. Furthermore, in still another embodiment of the present invention, the content is 43 to 70% by mass. Moreover, in the other embodiment of the present invention In the embodiment, the content is 47 to 70% by mass. Furthermore, in another embodiment of the present invention, the content is 50 to 70% by mass. Furthermore, in still another embodiment of the present invention, the content is 53 to 70% by mass. Furthermore, in still another embodiment of the present invention, the content is 56 to 70% by mass.

The content of the compound represented by the above formula (I-1) is, for example, in one embodiment of the present invention, the content of the liquid crystal composition of the present invention is 2 to 60% by mass. Furthermore, in another embodiment of the present invention, the content is 2 to 50% by mass. Furthermore, in still another embodiment of the present invention, the content is 2 to 45% by mass. Furthermore, in still another embodiment of the present invention, the content is 2 to 40% by mass. Furthermore, in another embodiment of the present invention, the content is 2 to 35% by mass. Furthermore, in another embodiment of the present invention, the content is 2 to 30% by mass. Furthermore, in still another embodiment of the present invention, the content is 2 to 26% by mass.

When the viscosity of the liquid crystal composition of the present invention is kept low and a liquid crystal composition having a high reaction rate is required, it is preferable that the above lower limit value is high and the upper limit value is high. In addition, when the Tni of the liquid crystal composition of the present invention is kept high and a liquid crystal composition having good temperature stability is required, it is preferable that the above lower limit is moderate and the upper limit is moderate. Further, in order to increase the dielectric anisotropy in order to maintain a low driving voltage, it is preferable that the above lower limit value is lower and the upper limit value is lower.

Alternatively, the compound represented by the formula (I-1) is preferably at least one compound selected from the group of 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 solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, and dripping. The required properties such as traces, afterimages, and dielectric anisotropy are suitably adjusted.

The content of the compound represented by the above formula (I-1-1) is, for example, 1 to 35 mass% in one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Alternatively, 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 still 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 9 to 30% by mass. Furthermore, in still another embodiment of the present invention, the content is 10 to 30% by mass.

The content of the compound represented by the above formula (I-1-1) is, for example, 2 to 26% by mass in one embodiment of the present invention, 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 2 to 22% by mass. Furthermore, in another embodiment of the present invention, the content is 2 to 17% by mass. Furthermore, in still another embodiment of the present invention, the content is 2 to 16% by mass. Furthermore, In another embodiment of the present invention, the content is 2 to 14% by mass. Furthermore, in another embodiment of the present invention, the content is 2 to 13% by mass. Furthermore, in another embodiment of the present invention, the content is 2 to 12% by mass. Furthermore, in another embodiment of the present invention, the content is 2 to 5% by mass.

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

When the compound represented by the formula (1.2) or the formula (1.3) is used alone, the content of the compound represented by the formula (1.2) is slightly higher, which is effective for the improvement of the reaction rate, and the content of the compound represented by the formula (1.3). It is preferable to form a liquid crystal composition which has a high reaction speed and is electrically and optically highly reliable in the range shown below.

The content of the compound represented by the formula (1.3) is, for example, 1 to 25% by mass based on the total mass of the liquid crystal composition of the present invention. Alternatively, 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 4 to 25% by mass. Furthermore, in still another embodiment of the present invention, the content is 6 to 25% by mass. Moreover, in the present invention In another embodiment, the content is 7 to 25% by mass. Furthermore, in another embodiment of the present invention, the content is 8 to 25% by mass. Furthermore, in still another embodiment of the present invention, the content is 9 to 25% by mass. Furthermore, in still another embodiment of the present invention, the content is 10 to 25% by mass.

The content of the compound represented by the above formula (1.3) is, for example, 2 to 22% by mass in one embodiment of the present invention, 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 2 to 18% by mass. Furthermore, in another embodiment of the present invention, the content is 2 to 17% by mass. Furthermore, in still another embodiment of the present invention, the content is 2 to 16% by mass. Furthermore, in another embodiment of the present invention, the content is 2 to 14% by mass. Furthermore, in another embodiment of the present invention, the content is 2 to 13% by mass. Furthermore, in another embodiment of the present invention, the content is 2 to 5% by mass.

Alternatively, the compound represented by the formula (I-1) is preferably at least one compound selected from the group of 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 types of compounds that can be combined are not particularly limited, but are based on solubility at low temperature, transfer temperature, electrical reliability, and birefringence. The required performance such as the rate of incidence is used in an appropriate combination. The type of the compound to be used is, for example, one type in one embodiment of the present invention. Alternatively, in another embodiment of the present invention, there are two types. Further, in still 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 solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, and dripping traces. The performance required for image retention, dielectric anisotropy, etc., is suitably adjusted.

The content of the compound represented by the above formula (I-1-2) 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. Alternatively, 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 4 to 25% by mass. Furthermore, in still another embodiment of the present invention, the content is 6 to 25% by mass. Furthermore, in another embodiment of the present invention, the content is 7 to 25% by mass. Furthermore, in another embodiment of the present invention, the content is 8 to 25% by mass. Furthermore, in still another embodiment of the present invention, the content is 9 to 25% by mass. Furthermore, in still another embodiment of the present invention, the content is 10 to 25% by mass. Furthermore, in another embodiment of the present invention, the content is 15 to 50% by mass.

In addition, the content of the compound represented by the formula (I-1-2) is, for example, 2 to 22% by mass in one embodiment of the present invention, 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 2 to 18% by mass. Furthermore, in another embodiment of the present invention, the content is 2 to 17% by mass. More, in this hair In still another embodiment of the invention, the content is 2 to 16% by mass. Furthermore, in another embodiment of the present invention, the content is 2 to 14% by mass. Furthermore, in another embodiment of the present invention, the content is 2 to 13% by mass.

Furthermore, the compound represented by the formula (I-1-2) is preferably at least one compound selected from the group consisting of compounds represented by the formulae (2.1) to (2.4), more preferably the formula (2.3) and / or a compound of the formula (2.4). The content of the compound represented by the formula (2.3) and the formula (2.4) is preferably 30% by mass or more in order to improve the solubility at a low temperature.

The content of the compound represented by the formula (2.2) in the liquid crystal composition preferably contains 3 masses based on the total mass of the liquid crystal composition of the present invention from the viewpoint of reaction rate, electrical, and optical reliability. More preferably, it is 10% by mass or more, more preferably 12% by mass or more, particularly preferably 15% by mass or more, more preferably 20% by mass or more, still more preferably 22% by mass or more, and still more preferably 23% by mass. The above is more preferably 24% by mass or more, still more preferably 30% by mass or more, and still more preferably 37% by mass or more.

On the other hand, the content of the compound represented by the formula (2.2) in the liquid crystal composition is preferably 60% by mass or less, more preferably 50% by mass or less, based on the total mass of the liquid crystal composition of the present invention. Good contains 46 The mass% or less is more preferably 45 mass% or less, more preferably 44 mass% or less, more preferably 42 mass% or less, more preferably 40 mass% or less, more preferably 38 mass% or less, and still more preferably 36 mass%. More preferably, it is 32% by mass or less, more preferably 26% by mass or less, and still more preferably 17% by mass or less.

In the above, the content of the compound represented by the formula (2.2) in the liquid crystal composition is preferably from 1 to 60% by mass, more preferably from 1 to 50, based on the total mass of the liquid crystal composition of the present invention. % by mass, particularly preferably 10 to 50% by mass, more preferably 10 to 45% by mass, more preferably 10 to 26% by mass, still more preferably 12 to 17% by mass, still more preferably 3 to 15% by mass, more preferably Preferably, the amount is 5 to 12% by mass, more preferably 15 to 38% by mass, more preferably 15 to 32% by mass, still more preferably 20 to 45% by mass, more preferably 20 to 42% by mass, still more preferably 22 to 44% by mass. % by mass, more preferably 24 to 40% by mass, more preferably 23 to 36% by mass, still more preferably 29 to 42% by mass, still more preferably 30 to 50% by mass, still more preferably 35 to 50% by mass, more preferably It is 37 to 46% by mass, more preferably 30 to 38% by mass.

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 25% by mass or less, more preferably 5% by mass based on the total mass of the liquid crystal composition of the present invention. The above 20% by mass or less is particularly preferably 10% by mass or more and 15% by mass or less, and more preferably 6% by mass or more and 15% 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 25% by mass or less, more preferably 5% by mass based on the total mass of the liquid crystal composition of the present invention. The above 20% by mass or less is particularly preferably 10% by mass or more and 15% by mass or less, and more preferably 6% by mass or more and 15% by mass or less.

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

It is preferred to adjust the content of the compound represented by the formula (2.5) in accordance with the properties required for solubility at a low temperature, transfer temperature, electrical reliability, birefringence, etc., with respect to the total mass of the liquid crystal composition of the present invention. In other words, it is preferable to contain 0 to 40% by mass of the compound, more preferably 10 to 40% by mass, and particularly preferably 15 to 35% by mass.

Alternatively, the compound represented by the above formula (I) is preferably at least one compound selected from the group of 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 kind of the compound which can be combined is not particularly limited, but is combined according to the required properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one type in one embodiment of the present invention. Alternatively, in another embodiment of the present invention, there are two types. Further, in still 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 in accordance with solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dripping trace, The performance required for image sticking, dielectric anisotropy, and the like is 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. Alternatively, 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 still 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 10 to 30% by mass. Furthermore, in another embodiment of the present invention, the content is 15 to 30% by mass. Furthermore, in still another embodiment of the present invention, the content is 20 to 30% by mass.

In addition, the content of the compound represented by the formula (I-2) 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. Furthermore, in another embodiment of the present invention, the content is 1% to 23% by mass. Furthermore, in another embodiment of the present invention, the content is 1% to 18% by mass. Furthermore, in still 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 1 to 12% 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 to 5% by mass. Furthermore, in still another embodiment of the present invention, the content is as described above. It is 3 to 38% by mass.

Furthermore, 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), more preferably a formula (3.1) or a formula. (3.3) and/or a compound represented by the formula (3.4). In particular, the compound represented by the formula (3.2) is preferred because it particularly improves the reaction rate of the liquid crystal composition of the present invention. Further, when the Tni which is required to be high is more preferable than the reaction rate, 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 2% by mass or more and 40% by mass or less based on the total mass of the liquid crystal composition of the present invention. The more preferable content is, for example, 3% by mass or more and 40% by mass or less, 4% by mass or more and 40% by mass or less, 10% by mass or more and 40% by mass or less, 12% by mass or more and 40% by mass or less, and 14% by mass or more. 5% by mass or less, 16% by mass or more and 40% by mass or less, 20% by mass or more and 40% by mass or less, 23% by mass or more and 40% by mass or less, 26% by mass or more and 40% by mass or less, and 30% by mass or more 40% by mass or less, 34% by mass or more and 40% by mass or less, 37% by mass or more and 40% by mass or less, or 3% by mass or more and 4% by mass or less, 3% by mass or more and 10% by mass or less, and 3% by mass or more and 12% by mass or less. 3% by mass or more and 14% by mass or less, 4% by mass or more and 13% by mass or less, 3% by mass or more and 16% by mass or less, 3% by mass or more and 20% by mass or less, 3% by mass or more and 23% by mass or less, and 3% by mass or more 26% by mass or less, 3% by mass or more and 30% by mass or less, 3% by mass or more and 34% by mass or less, and 3% by mass or more and 37% by mass or less.

Alternatively, the compound represented by the above formula (I) is preferably at least one compound selected from the group of 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 kind of the compound which can be combined is not particularly limited, but is combined according to the required properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one type in one embodiment of the present invention. Alternatively, in another embodiment of the present invention, there are two types. Further, in still 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 in accordance with solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, and dripping traces. The performance required for image retention, dielectric anisotropy, etc., is suitably adjusted.

The content of the compound represented by the above formula (I-3) is, for example, 3 to 60% by mass in one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Alternatively, in another embodiment of the present invention, the content is 4 to 60% by mass. Further, in still another embodiment of the present invention, the content is 15 to 60% by mass. Furthermore, in still another embodiment of the present invention, the content is 25 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 35 to 60% by mass. Furthermore, in still another embodiment of the present invention, the content is 38 to 60% by mass. Furthermore, in still another embodiment of the present invention, the content is 40 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 45 to 60% by mass. Furthermore, in still another embodiment of the present invention, the content is 47 to 60% by mass. Furthermore, in still another embodiment of the present invention, the content is 50 to 60% by mass.

In addition, the content of the compound is, for example, 3 to 55 mass% in one embodiment of the present invention, 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 3 to 45% by mass. Furthermore, in still another embodiment of the present invention, the content is 3 to 40% by mass. Furthermore, in still 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 20% by mass. Furthermore, in another embodiment of the present invention, the content is 3 to 15% by mass. More In still another embodiment of the present invention, the content is 3 to 5% by mass.

When the solubility at a low temperature is emphasized, the effect is high if the content is set slightly, and conversely, when the reaction rate is emphasized, the effect is high if the content is set slightly. Further, in order to improve the characteristics of the drop or the residual image, it is preferred to set the range of the content in the middle.

Further, the compound represented by the formula (I-3) is preferably at least one compound selected from the group consisting of compounds represented by the formulae (4.1) to (4.3), more preferably represented by the formula (4.3). Compound.

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, based on the total mass of the liquid crystal composition of the present invention. It is 6% by mass or more and 30% by mass or less, more preferably 8% by mass or more and 30% by mass or less, and still more preferably 10% by mass or more and 30% by mass or less, more preferably 12% by mass or more and 30% by mass or less, and more preferably It is 14% by mass or more and 30% by mass or less, more 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 particularly preferably 22% by mass or less. The mass% or more is 23 mass% or less.

Alternatively, or in addition, the compound represented by the above formula (I) is preferably at least one compound selected from the group of compounds represented by the formula (I-4). Things.

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 kind of the compound which can be combined is not particularly limited, but is combined according to the required properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one type in one embodiment of the present invention. Alternatively, in another embodiment of the present invention, there are 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 in accordance with solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dripping trace, The performance required for image sticking, dielectric anisotropy, and the like is appropriately adjusted.

The content of the compound represented by the above formula (I-4) is, for example, 2 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. Alternatively, in another embodiment of the present invention, the content is 5 to 50% by mass. Further, in still another embodiment of the present invention, the content is 6 to 50% by mass. Furthermore, in still another embodiment of the present invention, the content is 8 to 50% by mass. Furthermore, in another embodiment of the present invention, the content is 10 to 50% by mass. Furthermore, in another embodiment of the present invention, the content is 12 to 50% by mass. . Furthermore, in still another embodiment of the present invention, the content is 15 to 50% by mass. Furthermore, in still another embodiment of the present invention, the content is 20 to 50% by mass. Furthermore, in another embodiment of the present invention, the content is 25 to 50% by mass. Furthermore, in another embodiment of the present invention, the content is 30 to 50% by mass. Furthermore, in still another embodiment of the present invention, the content is 35 to 50% by mass. Furthermore, in still another embodiment of the present invention, the content is 40 to 50% by mass.

In addition, the content of the compound is, for example, in one embodiment of the present invention, the content of the compound is 2 to 40% 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 2 to 35% by mass. Furthermore, in still another embodiment of the present invention, the content is 2 to 30% by mass. Furthermore, in still 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.

When a high birefringence is obtained, the effect is high if the content is set slightly, and conversely, when the Tni is high, the effect is high if the content is set slightly. Further, in order to improve the characteristics of the drop or the residual image, it is preferred 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), more preferably from the formula (5.2) to the formula. (5.4) at least one compound selected from the group of compounds shown.

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, it is preferably 4% by mass or more and 30% by mass or less, 65% 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. 30% by mass or less, 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 22% by mass or more and 30% by mass or less. 23% by mass or more and 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. 10% 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, and 4% by mass or more and 20% by mass or less. 4% by mass or more and 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 4% by mass or more and 25% by mass or less.

Alternatively, or in addition, the compound represented by the above formula (I) is preferably at least one compound selected from the group of compounds represented by the formula (I-5). Things.

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 kind of the compound which can be combined is not particularly limited, but is combined according to the required properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one type in one embodiment of the present invention. Alternatively, in another embodiment of the present invention, there are 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 solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dripping trace, The performance required for image sticking, dielectric anisotropy, and the like is appropriately adjusted.

The content of the above compound 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. Alternatively, in another embodiment of the present invention, the content is 5 to 50% by mass. Further, in still another embodiment of the present invention, the content is 8 to 50% by mass. Furthermore, in still another embodiment of the present invention, the content is 11 to 50% by mass. Furthermore, in another embodiment of the present invention, the content is 13 to 50% by mass. Furthermore, another in the present invention In one embodiment, the content is 15 to 50% by mass. Furthermore, in another embodiment of the present invention, the content is 17 to 50% by mass. Furthermore, in still another embodiment of the present invention, the content is 20 to 50% by mass. Furthermore, in another embodiment of the present invention, the content is 25 to 50% by mass. Furthermore, in another embodiment of the present invention, the content is 30 to 50% by mass. Furthermore, in yet another embodiment of the present invention, the content is 35 to 50% by mass. Furthermore, in still another embodiment of the present invention, the content is 40 to 50% by mass.

In addition, the content of the compound is, for example, 1 to 40% by mass in one embodiment of the present invention, 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 35% by mass. 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 20% by mass. Furthermore, in still 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 1 to 10% by mass. Furthermore, in still another embodiment of the present invention, the content is 1 to 5% by mass.

When the solubility at a low temperature is emphasized, the effect is high if the content is set slightly, and conversely, when the reaction rate is emphasized, the effect is high if the content is set slightly. Further, in order to improve the characteristics of the drop or the residual image, it is preferred to set the range of the content in the middle.

Further, 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), more preferably a formula (6.3) or a formula. (6.4) and/or a compound represented by formula (6.6).

For example, the content of the compound represented by the above formula (6.6) is preferably 2% by mass or more and 30% by mass or less, and more 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. In particular, it is preferably 5% by mass or more and 30% by mass or less, more preferably 6% by mass or more and 30% by mass or less, still more preferably 9% by mass or more and 30% by mass or less, and still more preferably 12% by mass or more and 30% by mass or less. It is more preferably 14% by mass or more and 30% by mass or less, more preferably 16% by mass or more and 30% by mass or less, still more preferably 18% by mass or more and 25% by mass or less, still more preferably 20% by mass or more and 24% by mass or less, and more preferably It is 22% by mass or more and 23% by mass or less.

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).

It is preferably in accordance with solubility at low temperature, transfer temperature, electricity The content of the compound represented by the formula (6.7) is adjusted to the required performance of the gas reliability, the birefringence, etc., and it is preferable to contain the compound of 2% by mass or more based on the total mass of the liquid crystal composition of the present invention. More preferably, it is 3% by mass or more, more preferably 5% by mass or more, and even more preferably 7% by mass or more. Further, it is preferably in the range of 4% by mass or more and 16% by mass or less.

Alternatively, the compound represented by the above formula (I) is preferably at least one compound selected from the group of 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 represent 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 more 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. In particular, it is preferably 5% by mass or more and 30% by mass or less, more preferably 6% by mass or more and 30% by mass or less, still more preferably 9% by mass or more and 30% by mass or less, and still more preferably 12% by mass or more and 30% by mass or less. More preferably, it is 14% by mass or more and 30% by mass or less, more 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, still more preferably 20% by mass or more and 24% by mass or less, and more preferably It is preferably 22% by mass or more and 23% by mass or less.

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 of 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. X ¹² represents 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, more 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. In particular, 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.

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

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

Alternatively, the compound represented by the above formula (I) is preferably at least one compound selected from the group of 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, but it is preferred to combine one to three types in accordance with the required properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (I-8) is based on solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dropping trace, afterimage, dielectric anisotropy. The performance required for the liquid crystal composition is preferably from 1 to 30% by mass, more preferably from 1 to 25% by mass, even more preferably from 1 to 20% by mass, particularly preferably 1%, based on the total mass of the liquid crystal composition of the present invention. ~18% by mass, particularly preferably 3 to 18% by mass.

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), more preferably a formula (9.2) or a formula. (9.4) and/or a compound represented by formula (9.7).

Alternatively, the compound represented by the above formula (L) is preferably at least one compound selected from the compounds represented by the formula (II).

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, and Q ² represents a single bond, -COO-, -CH ₂ -CH ₂ - or CF ₂ O-.

The types of compounds that can be combined are not particularly limited. However, they are combined in accordance with the required properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one type in one embodiment of the present invention. Alternatively, in another embodiment of the present invention, there are two types. Further, in another embodiment of the present invention, there are three types. Furthermore, in another embodiment of the present invention, it is 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 solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dripping marks, and afterimage The required performance such as dielectric anisotropy is appropriately adjusted.

The content of the compound represented by the above formula (ii) is, for example, 3 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. Alternatively, in another embodiment of the present invention, the content is 5 to 50% by mass. Further, in still another embodiment of the present invention, the content is 7 to 50% by mass. Furthermore, in still another embodiment of the present invention, the content is 10 to 50% by mass. Furthermore, in another embodiment of the present invention, the content is 14 to 50% by mass. Furthermore, in another embodiment of the present invention, the content is 16 to 50% by mass. Furthermore, in still another embodiment of the present invention, the content is 20 to 50% by mass. Furthermore, in still another embodiment of the present invention, the content is 23 to 50% by mass. Furthermore, in another embodiment of the present invention, the content is 26 to 50% by mass. Furthermore, in another embodiment of the present invention, the content is 30 to 50% by mass. Furthermore, in still another embodiment of the present invention, the content is 35 to 50% by mass. Furthermore, in still another embodiment of the present invention, the content is 40 to 50% by mass.

In addition, the content of the compound represented by the above formula (II) is, for example, 3 to 40% by mass in one embodiment of the present invention, 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 from 3 to 35% by mass. Furthermore, in still another embodiment of the present invention, the content is 3 to 30% by mass. Furthermore, in still 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 10% by mass. Furthermore, in still another embodiment of the present invention, the content is 3 to 5% by mass.

Furthermore, the compound represented by the above formula (II) is preferably, for example, 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 preferably adjusted according to the required properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence, and is preferably 4% by mass or more. 24% by mass or less, more preferably 8% by mass or more and 18% by mass or less, and particularly preferably 12% by mass or more and 14% by mass or less.

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

Furthermore, the compound represented by the above formula (II) is preferably, for example, at least one compound selected from the group consisting of compounds represented by the formula (II-2).

(R ²³ represents an alkenyl group having 2 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 compound represented by the above formula (II-2) is not particularly limited as long as it can be combined, but it is required to have properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence. combination. The type of the compound to be used is, for example, one type in one embodiment of the present invention. Alternatively, in another embodiment of the present invention, it is two or more types.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (II-2) must be in accordance with solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dripping trace, The performance required for image sticking, dielectric anisotropy, and the like is appropriately adjusted.

The content of the compound represented by the above formula (II-2) with respect to the total mass of the liquid crystal composition of the present invention is, for example, one of the present invention In the form of the application, it is 3 to 35 mass%. Alternatively, in another embodiment of the present invention, the content is 4 to 35% by mass. Further, in still another embodiment of the present invention, the content is 5 to 35% by mass. Further, in still another embodiment of the present invention, the content is 8 to 35% by mass. Further, in another embodiment of the present invention, the content is 9 to 35% by mass. Furthermore, in another embodiment of the present invention, the content is 10 to 35% by mass. Further, in still another embodiment of the present invention, the content is 11 to 35% by mass. Further, in still another embodiment of the present invention, the content is 12 to 35% by mass. Further, in another embodiment of the present invention, the content is 13 to 35% by mass. Further, 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 20 to 35% by mass.

In addition, the content of the compound represented by the above formula (II-2) 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. Furthermore, in another embodiment of the present invention, the content is 3 to 26% by mass. Furthermore, in still another embodiment of the present invention, the content is 3 to 20% by mass. Furthermore, in still another embodiment of the present invention, the content is from 3 to 16% 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 14% by mass. Furthermore, in still another embodiment of the present invention, the content is 3 to 13% by mass. Furthermore, in still 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 3 to 10% by mass. Furthermore, in another embodiment of the present invention, the content is 3 to 9% by mass. Moreover, another aspect of the present invention In the embodiment, the content is 3 to 7% by mass.

Furthermore, the compound represented by the above formula (II-2) is preferably, for example, at least one compound selected from the group consisting of compounds represented by formula (11.1) to formula (11.3).

The compound represented by the formula (11.1) or the compound represented by the formula (11.2) may be contained according to the required properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence, or the formula (11.1) may be contained. Both the compound shown and the compound represented by the formula (11.2) or all of the compounds represented by the formula (11.1) to the formula (11.3).

The content of the compound represented by the above formula (11.1) is preferably from 1 to 30% by mass, more preferably from 2 to 25% by mass, even more preferably from 2 to 20% by mass, based on the total mass of the liquid crystal composition of the present invention. . Among these, for example, it is preferably 2 to 10% by mass, 3 to 7 mass%, 3 to 5 mass%, 4 to 12 mass%, 5 to 15 mass%, 6 to 14 mass%, and 6 to 13 mass. %, 8 to 15% by mass, 12 to 20% by mass, and 13 to 16% by mass.

Further, the content of the compound represented by the above formula (11.2) is preferably from 1 to 30% by mass, more preferably from 1 to 25% by mass, even more preferably from 1 to 20, based on the total mass of the liquid crystal composition of the present invention. The mass% is particularly preferably 1 to 17% by mass. Among these, for example, in one embodiment, it is preferably 1 to 11 The mass %, more preferably 3 to 11% by mass, particularly preferably 5 to 11% by mass, particularly preferably 6 to 11% by mass, particularly preferably 9 to 11% by mass, and in another embodiment, It is preferably 2 to 15% by mass, more preferably 2 to 9% by mass, still more preferably 4 to 5% by mass, and still more preferably 5 to 17% by mass in still another embodiment.

When both the compound represented by the above formula (11.1) and the compound represented by the above formula (11.2) are contained, the total mass of the compound of the two is preferably 1 with respect to the total mass of the liquid crystal composition of the present invention. The mass% or more is 45% by mass or less, more preferably 1% by mass or more and 40% by mass or less, and particularly preferably 1% by mass or more and 35% by mass or less, particularly preferably 1% by mass or more and 30% by mass or less, and more preferably 3 or less. The mass% or more is 30% by mass or less, more preferably 3% by mass or more and 26% by mass or less, more preferably 3% by mass or more and 20% by mass or less, still more preferably 3% by mass or more and 16% by mass or less, and still more preferably 3% by mass or less. The amount is 15% by mass or less, more preferably 3% by mass or more and 14% by mass or less, more preferably 3% by mass or more and 13% by mass or less, still more preferably 3% by mass or more and 12% by mass or less, and still more preferably 3% by mass or more. The mass% or less is more preferably 3% by mass or more and 9% by mass or less, more preferably 3% by mass or more and 7% by mass or less, more preferably 4% by mass or more and 30% by mass or less, and still more preferably 5% by mass or more and 30% by mass or less. Hereinafter, it is more preferably 8% by mass or more and 30% by mass or less, more preferably 9% by mass or more and 30% by mass or less, still more preferably 10% by mass or more and 30% by mass or less. , More preferably not less than 11 mass% to 30 mass%, more preferably not less than 12 mass% to 30 mass%, more preferably not less than 13 mass% to 30 mass%, more preferably not less than 15 mass% to 30 mass%. Among these, for example, it is preferably 4% by mass or more and 12% by mass or less, 5% by mass or more and 9% by mass or less, 8% by mass or more and 13% by mass or less, 9% by mass or more and 14% by mass or less, and 12% by mass or more. 16% by mass or less, 11% by mass or more 26% by mass or less, 11% by mass or more and 20% by mass or less.

Alternatively, 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-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 kind 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 solubility at low temperature, transfer temperature, electrical reliability, birefringence and the like.

The content of the compound represented by the above formula (II-3) must be such as solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dripping trace, afterimage, 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, it is preferably 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.

Further, the compound represented by the above formula (II-3) is preferably, for example, at least one compound selected from the group consisting of compounds represented by formula (12.1) to formula (12.3).

The compound represented by the formula (12.1) may be contained according to the properties required for solubility at low temperature, transfer temperature, electrical reliability, birefringence, etc., or the compound represented by the formula (12.2) may be contained, or the formula (12.1) may be contained. Both the compound shown 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, based on the total mass of the liquid crystal composition of the present invention, and particularly preferably 7% by mass or more and 40% by mass or less, particularly preferably 9% by mass or more and 40% by mass or less, more preferably 11% by mass or more and 40% by mass or less, still more preferably 12% by mass or more and 40% by mass or less, more preferably 13% by mass or more and 40% by mass or less, more preferably 18% by mass or more and 30% by mass or less, and still more preferably 21% by mass or more and 25% by mass or less.

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, based on the total mass of the liquid crystal composition of the present invention. Preferably, it is 8 mass% or more and 40 mass% or less, and particularly preferably 10 mass% or more and 40 mass%. In the following, it is more preferably 12% by mass or more and 40% by mass or less, more preferably 15% by mass or more and 40% by mass or less, still more preferably 17% by mass or more and 30% by mass or less, and still more 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 two compounds is preferably 15% by mass based on the total mass of the liquid crystal composition of the present invention. The above 45 mass% or less is more preferably 19% by mass or more and 45% by mass or less, and particularly 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, more preferably 0.1% by mass or more and 1% by mass or less, based on the total mass of the liquid crystal composition of the present invention. It is preferably 0.2% by mass or more and 0.5% by mass or less. The compound represented by the formula (12.3) may also be an optically active compound.

Further, the compound represented by the formula (II-3) is preferably, for example, 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 required properties such as solubility at low temperature, 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 required properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence, and is preferably 1 mass. % or more is 24 mass% or less, more preferably 4 mass% or more and 18 mass% or less, and particularly preferably 6 mass% or more and 14 mass% or less.

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

Alternatively, 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-4).

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.

May contain only one of these compounds, and may also contain There are two or more types, and it is preferable to suitably combine them according to the required performance. The type of the compound which can be combined is not particularly limited, and it is preferably one or two kinds of these compounds, depending on the properties required for solubility at low temperature, transfer temperature, electrical reliability, and birefringence. Good contains 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. It is particularly preferably 3% by mass or more and 15% by mass or less, more preferably 4% by mass or more and 12% by mass or less, and still more preferably 5% by mass or more and 7% by mass or less.

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

Alternatively, the compound represented by the above formula (L) is preferably at least one compound selected from the group 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 or birefringence. More preferably, it is 2% by mass or more and 20% by mass or less, and particularly preferably 2% by mass or more and 15% 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 content of the compound represented by the formula (15.1) is preferably 2% by mass or more and 10% by mass or less, more preferably 7% by mass or more and 9% by mass or less.

Furthermore, 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 formula (III-1) is preferably adjusted in accordance with the required properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence, and is preferably 4% by mass or more. The mass% or less is more preferably 6% by mass or more and 18% by mass or less, and particularly 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), for example.

Alternatively, the compound represented by the above formula (III) is preferably at least one compound selected from the group of 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 solubility at low temperature, transfer temperature, electrical reliability, birefringence, etc., with respect to the liquid crystal composition of the present invention. The total mass of the material 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 particularly preferably 10% by mass or more and 13% by mass or less.

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

Furthermore, 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 kind of the compound which can be combined is not particularly limited, but is suitably combined in accordance with the required properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one type in one embodiment of the present invention. Alternatively, in another embodiment of the present invention, there are two types. Furthermore, in still another embodiment of the present invention, there are three types. Furthermore, in still another embodiment of the present invention, there are four types.

The content of the compound represented by the above formula (V) is, for example, 2 to 40% 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 4 to 40% by mass. Furthermore, in still another embodiment of the present invention, the content is 7 to 40% by mass. Furthermore, in still another embodiment of the present invention, the content is 10 to 40% by mass. Moreover, in the present invention In another embodiment, the content is 12 to 40% by mass. Furthermore, in another embodiment of the present invention, the content is 15 to 40% by mass. Furthermore, in still another embodiment of the present invention, the content is 17 to 40% by mass. Furthermore, in still another embodiment of the present invention, the content is 18 to 40% 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 22 to 40% by mass.

Further, for example, in one embodiment of the present invention, the content of the compound is from 2 to 30% 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 of the compound is 2 to 25% by mass. Furthermore, in another embodiment of the present invention, the content of the compound is 2 to 20% by mass. Furthermore, in still another embodiment of the present invention, the content of the compound is from 2 to 15% by mass. Furthermore, in another embodiment of the present invention, the content of the compound is from 2 to 10% by mass. Furthermore, in another embodiment of the present invention, the content of the compound is 2 to 5% by mass. Furthermore, in still another embodiment of the present invention, the content of the compound is from 2 to 4% 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. 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. base.

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 more preferably 2% by mass or more and 10% by mass or less. In particular, it is preferably 3% by mass or more and 10% by mass or less, and particularly preferably 3% by mass or more and 7% 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 compounds represented by the formula (20.1) to the formula (20.4), more preferably the formula (20.2). The compound shown.

Alternatively, 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. base.

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 based on the total mass of the liquid crystal composition of the present invention, and more preferably 1% by mass or more and 10% by mass or less. In particular, it is preferably 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 compounds represented by the formula (21.1) to the formula (21.3), more preferably the formula (21.1). The compound shown.

Alternatively, 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. base.

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 based on the total mass of the liquid crystal composition of the present invention, and more preferably 2% by mass or more and 15% by mass or less. In particular, 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), more preferably the formula (22.1). The compound shown.

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

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. 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, but is suitably combined in accordance with the required properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one type in one embodiment of the present invention. Alternatively, in another embodiment of the present invention, it is two or more types.

The content of the compound represented by the above formula (V-2) is, for example, 2 to 40% 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 4 to 40% by mass. Furthermore, in still another embodiment of the present invention, the content of the compound is from 7 to 40% by mass. Furthermore, in still another embodiment of the present invention, the content of the compound is from 10 to 40% by mass. Furthermore, in another embodiment of the present invention, the content of the compound is from 12 to 40% by mass. Furthermore, in another embodiment of the present invention, the content of the compound is from 15 to 40% by mass. Furthermore, in another embodiment of the present invention, the content of the compound is from 17 to 40% by mass. Furthermore, in still another embodiment of the present invention, the content of the compound is from 18 to 40% by mass. Furthermore, in another embodiment of the present invention, the content of the compound is from 20 to 40% by mass. Furthermore, in another embodiment of the present invention, the content of the compound is from 22 to 40% by mass.

Further, for example, in one embodiment of the present invention, the content of the compound represented by the above formula (V-2) is from 2 to 30% 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 of the compound is 2 to 25% by mass. Furthermore, in still another embodiment of the present invention, the content of the compound is 2 to 20 the amount%. Furthermore, in still another embodiment of the present invention, the content of the compound is from 2 to 15% by mass. Furthermore, in another embodiment of the present invention, the content of the compound is from 2 to 10% by mass. Furthermore, in another embodiment of the present invention, the content of the compound is 2 to 5% by mass. Furthermore, in still another embodiment of the present invention, the content of the compound is from 2 to 4% by mass.

When it is desired that the liquid crystal composition of the present invention is in the form of a high Tni, it is preferred that the content of the compound represented by the above formula (V-2) is slightly larger, and in the case where a low viscosity embodiment is desired, it is preferred to The content is slightly less.

Further, 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. base.

Further, 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), more preferably formula (23.1). And / or a compound represented by the formula (23.2).

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. base.

The compound represented by the above formula (V-2-2) is preferably contained in an amount of 2% by mass or more and 16% by mass or less, more 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. More preferably, it is contained in an amount of 4% by mass or more and 10% by mass or less.

Further, 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), more preferably formula (24.1). And / or a compound of the formula (24.2).

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

The compound represented by the above formula (V-3) is preferably contained in an amount of 2% by mass or more and 16% by mass or less, more preferably 4% by mass or more and 16% by mass or less, based on the total mass of the liquid crystal composition of the present invention. Good contains 7 The mass% or more is 13% by mass or less, and more preferably 8% by mass or more and 11% by mass or less.

Further, 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).

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

The compound represented by the above formula (V'-3) is preferably contained in an amount of 2% by mass or more and 16% by mass or less, more preferably 4% by mass or more and 16% by mass or less, based on the total mass of the liquid crystal composition of the present invention. In particular, it is preferably 7 mass% or more and 13 mass% or less, and more preferably 8 mass% or more and 11 mass% or less.

Further, 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 (25.31) to the formula (25.33).

Alternatively, 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 more preferably 2% by mass or more and 15% by mass or less. It is preferably contained in an amount of 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-4) is preferably at least one compound selected from the group consisting of compounds represented by the formula (25.11) to the formula (25.13), more preferably represented by the formula (25.13). Compound.

Alternatively, 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 based on the total mass of the liquid crystal composition of the present invention, and more preferably 2% by mass or more and 15% by mass or less. It is particularly preferable to contain 2% by mass or more and 13% 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 (25.25), more preferably a formula (25.21) and/or Or a compound represented by the formula (25.23).

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 straight 2 to 10 carbon atom. Alkenyl.

The kind of the compound which can be combined is not particularly limited, and it is preferable to blend 1 to 3 kinds of these compounds in accordance with the required properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence. More preferably, it contains 1 to 4 types, and particularly preferably contains 1 to 5 types.

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

As the compound represented by the above formula (VI), specifically, the compounds listed below can be suitably used.

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 straight silicon alkoxy group having 4 to 10 carbon atoms. Alkenyl.

The type of the compound which can be combined is not particularly limited, and it is preferably blended in accordance with the required properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence. 3 types, more preferably 1~4 types, especially 1 to 5 types.

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

As the compound represented by the above formula (VII), specifically, the compounds listed below can be suitably used.

The liquid crystal composition of the present invention preferably 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 two or more non-adjacent -CH ₂ - groups may independently be -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

(d) 1,4- cyclohexylene (this group present in a -CH ₂ - or of two or more adjacent -CH ₂ - may be substituted with -O- or -S-), and (e) 1 a group of 4-phenylene (one -CH= or two or more non-contiguous -CH=substitutable -N=) groups present in the group, the above group (d) Each of the groups (e) may be independently substituted by 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-, when PM is 2, 3 or 4 and K ^M1 is present in plural, The same or different, when PM is 2, 3 or 4 and the C ^M2 is plural, they may be the same or different, and 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 cyano group, a trifluoromethyl group, a fluoromethoxy group, a difluoromethoxy group, a trifluoromethoxy group or a 2,2,2-trifluoroethyl group; Except for the compound represented by the formula (i).

The type of the compound which can be combined is not particularly limited, but it is suitably used in combination according to the desired properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one type in one embodiment of the present invention. Alternatively, in another embodiment of the present invention, there are two types. Furthermore, in still another embodiment of the present invention, there are three types. Further, in still 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. Again In still another embodiment of the present invention, it is 7 or more types.

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 solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dripping trace, and afterimage. The required performance such as dielectric anisotropy is appropriately adjusted.

The content of the compound represented by the above formula (M) is from 1 to 95% by mass based on the total mass of the liquid crystal composition of the present invention in one embodiment of the present invention. Further, for example, in another embodiment of the present invention, the content of the compound is from 10 to 95% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 20 to 95% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 30 to 95% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 40 to 95% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 45 to 95% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 50 to 95% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 55 to 95% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 60 to 95% by mass. For example, in still another embodiment of the present invention, the content of the compound is 65 to 95% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 70 to 95% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 75 to 95% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 80 to 95% by mass.

Further, with respect to the total mass of the liquid crystal composition of the present invention, The content of the compound represented by the above formula (M) is, for example, 1 to 85% by mass in one embodiment of the present invention. In another embodiment of the present invention, the content of the compound is from 1 to 75% by mass. In still another embodiment of the present invention, the content of the compound is from 1 to 65% by mass. In still another embodiment of the present invention, the content of the compound is from 1 to 55% by mass. In still another embodiment of the present invention, the content of the compound is from 1 to 45% by mass. In still another embodiment of the present invention, the content of the compound is from 1 to 35% by mass. In still another embodiment of the present invention, the content of the compound is from 1 to 25% by mass.

When the viscosity of the liquid crystal composition of the present invention is kept low and a liquid crystal composition having a high reaction rate is required, it is preferable to make the above lower limit value slightly lower and the upper limit value to be slightly lower. When the Tni of the liquid crystal composition of the present invention is kept high and a liquid crystal composition having good temperature stability is required, it is preferable that the lower limit is made slightly lower and the upper limit is made slightly lower. Further, in order to increase the dielectric anisotropy in order to maintain a low driving voltage, it is preferable to make the lower limit slightly higher and the upper limit to be slightly higher.

R ^M1 is preferably a linear alkyl group having 1 to 5 carbon atoms and a linear alkoxy group having 1 to 4 carbon atoms when the ring structure to which the bond is bonded is a phenyl group (aromatic). And an alkenyl group having 4 to 5 carbon atoms, wherein the ring structure to which the bond is bonded is cyclohexane, meme, and When a saturated ring structure such as an alkane is used, 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 preferable. Alkenyl.

When the compound represented by the formula (M) is required to have chemical stability of the liquid crystal composition, it is preferred that the compound has no chlorine atom in its molecule. Again The compound having a chlorine atom in the liquid crystal composition is preferably 0 to 5% by mass, more preferably 0 to 3% by mass, even more preferably 0 to 1% by mass, based on the total mass of the liquid crystal composition of the present invention. More preferably, it is 0 to 0.5% by mass, and particularly preferably does not substantially contain. The term "substantially not contained" means a compound which is not formed as an impurity in the production of a compound, and means that a compound containing only a chlorine atom is mixed into a liquid crystal composition.

The compound represented by the formula (M) is, for example, preferably at least one compound selected from the group 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 Represents a hydrogen atom or a fluorine atom, and Y ⁸ represents a fluorine atom or -OCF ₃ .

The type of the compound which can be combined is not particularly limited, but it is suitably used in combination according to the desired properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one type in one embodiment of the present invention. Alternatively, in another embodiment of the present invention, there are two types. Furthermore, in another embodiment of the present invention, it is 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 solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, and dripping traces. The performance required for image retention, dielectric anisotropy, etc., is suitably adjusted.

The content of the compound represented by the above formula (VIII) is, for example, 2 to 40% 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 4 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 5 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 6 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 7 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 8 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 9 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 10 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 11 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 12 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 14 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 15 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 21 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is 23 to 40% by mass.

In addition, the content of the compound 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. In another embodiment of the present invention, the aforementioned compound The content is 2 to 25% by mass. In still another embodiment of the present invention, the content of the compound is from 2 to 21% by mass. In still another embodiment of the present invention, the content of the compound is from 2 to 16% by mass. In still another embodiment of the present invention, the content of the compound is from 2 to 12% by mass. In still another embodiment of the present invention, the content of the compound is from 2 to 8% by mass. In still another embodiment of the present invention, the content of the compound is from 2 to 5% by mass.

When the viscosity of the liquid crystal composition of the present invention is kept low and a liquid crystal composition having a high reaction rate is required, it is preferable to make the above lower limit value slightly lower and the upper limit value to be slightly lower. In addition, when the liquid crystal composition of the liquid crystal composition of the present invention is kept high and a liquid crystal composition having good temperature stability is required, it is preferable that the lower limit value is slightly lower and the upper limit value is made slightly lower. Further, in order to increase the dielectric anisotropy in order to maintain a low driving voltage, it is preferable to make the above lower limit value slightly higher and the upper limit value to be slightly higher.

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.

The types of compounds that can be combined are not particularly limited, but are based on solubility at low temperature, transfer temperature, electrical reliability, and birefringence. The desired properties such as the rate of incidence are suitably combined and used. The type of the compound to be used is, for example, one type in one embodiment of the present invention. Alternatively, in another embodiment of the present invention, it is two or more types.

Further, the compound represented by the above formula (VIII-1) is specifically preferably at least one compound selected from the group consisting of compounds represented by formula (26.1) to formula (26.4), more preferably formula (26.1). And / or a compound represented by the formula (26.2), particularly preferably a compound represented by the formula (26.2).

The content of the compound represented by the above formula (26.1) is considered to be solubility at low temperature, transfer temperature, electrical reliability, birefringence, etc., and is preferably 1% by mass based on the total mass of the liquid crystal composition of the present invention. 20% by mass or less, more preferably 1% by mass or more and 15% by mass or less, It is particularly preferably 1% by mass or more and 10% by mass or less, and particularly preferably 1% by mass or more and 7% by mass or less. In a particularly preferable range, for example, 1% by mass or more and 6% by mass or less, 1% by mass or more and 5% by mass or less, 1% by mass or more and 3% by mass or less, 3% by mass or more and 7% by mass or less, and 3 masses are exemplified. % or more and 6 mass% or less.

The content of the compound represented by the above formula (26.2) is considered to be solubility at a low temperature, transfer temperature, electrical reliability, birefringence, etc., and is preferably 1% by mass based on the total mass of the liquid crystal composition of the present invention. The amount is 30% by mass or less, more preferably 1% by mass or more and 25% by mass or less, and particularly preferably 1% by mass or more and 20% by mass or less, and particularly preferably 1% by mass or more and 18% by mass or less. In a particularly preferable range, for example, it is preferably 1% by mass or more and 2% by mass or less, 3% by mass or more and 12% by mass or less, 4% by mass or more and 12% by mass or less, 4% by mass or more and 10% by mass or less, and 6 mass%. %% or more and 12% by mass or less, 6 mass% or more and 9% by mass or less, 6 mass% or more and 8 mass% or less, 7 mass% or more and 12 mass% or less, 8 mass% or more and 11 mass% or less, and 3% by mass or more and 7 mass% or less. Hereinafter, it is 5% by mass or more and 10% by mass or less, and 12% by mass or more and 18% by mass or less.

The total content of the compound represented by the above formula (26.1) and the compound represented by the above formula (26.2) is preferably from 1 to 30% by mass, more preferably from 1 to 25, based on the total mass of the liquid crystal composition of the present invention. The mass % is particularly preferably 1 to 20% by mass. In a more preferable range, for example, 1% by mass or more and 18% by mass or less, 1% by mass or more and 14% by mass or less, 1% by mass or more and 10% by mass or less, 1% by mass or more and 9% by mass or less, and 1 mass may be mentioned. % or more and 8 mass% or less, 1 mass% or more and 2 mass% or less, 5 mass% or more and 10 mass% or less, 6 mass% or more, 10 mass% or less, and 6 mass% or more. 5% by mass or less, 6% by mass or more and 8% by mass or less, 8% by mass or more and 12% by mass or less, 7% by mass or more and 12% by mass or less, 9% by mass or more, 14% by mass or less, and 12% by mass or more and 18% by mass or less. .

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 type of the compound which can be combined is not particularly limited, but it is suitably used in combination according to the desired properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one type in one embodiment of the present invention. Alternatively, in another embodiment of the present invention, there are two types. Alternatively, in still another embodiment of the present invention, it is three or more types.

The content of the compound represented by the above formula (VIII-2) is considered to be solubility at low temperature, transfer temperature, electrical reliability, birefringence, etc., and is preferably based on the total mass of the liquid crystal composition of the present invention. From 2.5 mass% to 25% by mass, more preferably from 8% by mass to 25% by mass, even more preferably from 10% by mass to 20% by mass, even more preferably from 12% by mass to 15% by mass.

Further, the compound represented by the formula (VIII-2) is preferably at least one selected from the group consisting of compounds represented by the formula (27.1) to the formula (27.4). The compound is more preferably a compound represented by the formula (27.2).

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 types of compounds that can be combined are not particularly limited, but are based on solubility at low temperature, transfer temperature, electrical reliability, and birefringence. The desired properties such as the rate of incidence are suitably combined and used. The type of the compound to be used is, for example, one type in one embodiment of the present invention. Alternatively, in another embodiment of the present invention, it is two or more types.

Further, the compound represented by the above formula (VIII-3) is specifically preferably at least one compound selected from the group consisting of compounds represented by formula (26.11) to formula (26.14), more preferably (26.11). And / or a compound represented by the formula (26.12), and a compound represented by the formula (26.12) is especially preferable.

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

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 which can be combined is not particularly limited, and it is preferable to combine one type or two types or more in consideration of solubility at low temperature, transfer temperature, electrical reliability, birefringence and the like.

The content of the compound represented by the above formula (VIII-4) is 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 (VIII-4) is 1 to 25% by mass based on the total mass of the liquid crystal composition of the present invention, and in another embodiment, In another embodiment, the amount is 2 to 20% by mass, and in still another embodiment, the content of the compound is 3 to 13% by mass. In still another embodiment, the compound is The content is 3 to 10% by mass, and in still another embodiment, the content of the compound is 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 preferably at least one selected from the group consisting of compounds represented by the formulae (26.21) to (26.24). A compound wherein the compound of the formula (26.24) is more preferably contained.

Further, the compound represented by the above formula (M) is preferably, for example, 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 Represents 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 type of the compound which can be combined is not particularly limited, but it is suitably used in combination according to the desired properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one type in one embodiment of the present invention. Alternatively, in another embodiment of the present invention, there are two types. Furthermore, in still another embodiment of the present invention, there are three types. Further, in still 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 types.

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 solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dripping trace, and afterimage. The required performance such as dielectric anisotropy is appropriately adjusted.

The content of the compound represented by the above formula (IX) is, for example, 2 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. Further, for example, in another embodiment of the present invention, the content of the compound is from 5 to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 8 to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 10 to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 12 to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 15 to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 17 to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 20 to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is 24 to 70. quality%. For example, in still another embodiment of the present invention, the content of the compound is from 28 to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 30 to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 34 to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 39 to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is 40 to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 42 to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is 45 to 70% by mass.

Further, the content of the compound is, for example, in another embodiment of the present invention, the content of the compound is from 3 to 60% by mass based on the total mass of the liquid crystal composition of the present invention. In still another embodiment of the present invention, the content of the compound is from 3 to 55% by mass. In still another embodiment of the present invention, the content of the compound is from 3 to 50% by mass. In still another embodiment of the present invention, the content of the compound is from 3 to 45% by mass. In still another embodiment of the present invention, the content of the compound is from 3 to 40% by mass. In still another embodiment of the present invention, the content of the compound is from 3 to 35% by mass. In still another embodiment of the present invention, the content of the compound is from 3 to 30% by mass. In still another embodiment of the present invention, the content of the compound is 25% by mass. In still another embodiment of the present invention, the content of the compound is from 3 to 20% by mass. In still another embodiment of the present invention, the content of the compound is from 3 to 15% by mass. In still another embodiment of the present invention, the content of the compound is from 3 to 10% by mass.

When the viscosity of the liquid crystal composition of the present invention is kept low and a liquid crystal composition having a high reaction rate is required, it is preferable to make the above lower limit value slightly lower and the upper limit value to be slightly lower. In addition, when the liquid crystal composition of the liquid crystal composition of the present invention is kept high and a liquid crystal composition which is less likely to cause image sticking is required, it is preferable that the lower limit value is slightly lower and the upper limit value is made slightly lower. Further, in order to increase the dielectric anisotropy in order to maintain a low driving voltage, it is preferable to make the lower limit slightly higher and the upper limit to be slightly higher.

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 type of the compound which can be combined is not particularly limited, but it is suitably used in combination according to the desired properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one type in one embodiment of the present invention. Alternatively, in another embodiment of the present invention, there are two types. Furthermore, in still another embodiment of the present invention, there are three types. Further, in another embodiment of the present invention, it is four or more types.

Further, 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 type of the compound which can be combined is not particularly limited, but it is suitably used in combination according to the desired properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one type in one embodiment of the present invention. Alternatively, in another embodiment of the present invention, there are two types. Furthermore, in still another embodiment of the present invention, it is three or more types.

The content of the compound represented by the above formula (IX-1-1) is appropriately adjusted in consideration of an embodiment such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (IX-1-1) is, for example, 1 to 15% 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 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 1 to 3% by mass.

Further, with respect to the total mass of the liquid crystal composition of the present invention, The content of the compound represented by the above formula (IX-1-1) is, for example, 2 to 17% by mass in one embodiment of the present invention. In another embodiment of the present invention, the content of the compound is from 3 to 10% by mass. In still another embodiment of the present invention, the content of the compound is from 5 to 10% by mass. In still another embodiment of the present invention, the content of the compound is from 6 to 10% by mass. In still another embodiment of the present invention, the content of the compound is from 7 to 10% by mass. In still another embodiment of the present invention, the content of the compound is from 3 to 8% by mass. In still another embodiment of the present invention, the content of the compound is from 5 to 8 mass%. In still another embodiment of the present invention, the content of the compound is from 6 to 9% by mass.

Further, the compound represented by the above formula (IX-1-1) is preferably selected from the group consisting of compounds represented by the formula (28.1), the formula (28.2), the formula (28.4), and the formula (28.5). At least one compound is more preferably a compound represented by the formula (28.5).

The content of the compound represented by the formula (28.3) in the liquid crystal composition is not particularly limited, but is preferably 1% by mass or more, and more preferably 3% by mass or more, based on the total mass of the liquid crystal composition. It is preferably 5% by mass or more, more preferably 7% by mass or more, still more preferably 10% by mass or more, still more preferably 14% by mass or more, and still more preferably 16% by mass or more. On the other hand, in consideration of solubility at low temperature, phase transition temperature of nematic phase-isotropic liquid phase, electrical reliability, etc., the content of the compound represented by the formula (i) in the liquid crystal composition is relative to the liquid crystal composition described above. The total mass of the material is preferably 30% by mass or less, more preferably 25% by mass or less, still more preferably 22% by mass or less, still more preferably 20% by mass or less, still more preferably 19% by mass or less, and still more preferably 15% by mass or less. The mass% or less is more preferably 12% by mass or less, more preferably 10% by mass or less, still more preferably 8% by mass or less, and still more preferably 5% by mass or less.

In the above, the content of the compound represented by the formula (28.3) in the liquid crystal composition is preferably from 1 to 30% by mass, more preferably from 1 to 25, based on the total mass of the liquid crystal composition of the present invention. % by mass, particularly preferably 1 to 19% by mass, particularly preferably 1 to 8% by mass, more preferably 2 to 6% by mass, still more preferably 3 to 8% by mass, still more preferably 5 to 15% by mass, more preferably The ratio is preferably 5 to 11% by mass, more preferably 7 to 12% by mass, still more preferably 7 to 20% by mass, still more preferably 7 to 18% by mass, still more preferably 11 to 16% by mass.

In the liquid crystal composition of the present invention, the above formula (28.5) The content of the compound to be described is preferably 1% by mass or more and 25% by mass or less, more preferably 1%, based on the total mass of the liquid crystal composition of the present invention, in consideration of solubility at a low temperature, transfer temperature, electrical reliability, and the like. The mass% or more is 20% by mass or less, and particularly preferably 1% by mass or more and 15% by mass or less, and particularly preferably 1% by mass or more and 10% by mass or less. Among these, it is preferably 2% by mass or more and 10% by mass or less, 3% by mass or more and 10% by mass or less, 5% by mass or more and 10% by mass or less, 65% by mass or more and 10% by mass or less, and 75% by mass or more. 1% by mass or less, 1% by mass or more and 10% by mass or less, 1% by mass or more and 10% by mass or less, 1% by mass or more and 9% by mass or less, 1% by mass or more and 8% by mass or less, 1% by mass or more and 3% by mass or less, and 3% by mass or less. The mass% or more is 8% by mass or less, 5% by mass or more and 8% by mass or less, and 6% by mass or more and 9% by mass or less.

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

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 particularly limited, and it is preferable to combine one to three types, and more preferably from one to four types, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

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

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), more preferably formula (29.2). And / or a compound represented by the formula (29.4).

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 particularly limited, and is considered to be suitable for use in combination with each of the embodiments in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. For example, in one embodiment of the present invention, there are one type, and in another embodiment, two types, in another embodiment, three types, and in still another embodiment, four types, and in another embodiment, 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 kind of the compound which can be combined is not particularly limited, and it is preferable to combine 1 to 3 types in consideration of solubility at low temperature, transfer temperature, electrical reliability, birefringence and the like.

The content of the compound represented by the formula (IX-2-1) is considered The characteristics such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence are appropriately adjusted.

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 40% 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 2 to 40% by mass. In still another embodiment, the content of the compound is from 4 to 40% by mass. In still another embodiment, the content of the compound is from 10 to 40% by mass. In still another embodiment, the content of the compound is from 14 to 40% by mass. In still another embodiment, the content of the compound is from 16 to 40% by mass. In still another embodiment, the content of the compound is from 21 to 40% by mass.

In addition, for example, the content of the compound represented by the above formula (IX-2-1) is 1 to 30% by mass based on the total mass of the liquid crystal composition of the present invention, and furthermore In one embodiment, it is 1 to 25% by mass, and in still another embodiment, it is 1 to 22% by mass, and in still another embodiment, it is 1 to 20% by mass, and in still another embodiment, it is 1 to 10% by mass. The mass % is 1 to 7% by mass in still another embodiment, and is 1 to 5% by mass in still another embodiment.

Further, the compound represented by the formula (IX-2-1) is preferably at least one compound selected from the group consisting of compounds represented by the formula (30.1) to the formula (30.4), more preferably the formula (30.1) and / or a compound of 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 particularly limited, and it is preferable to combine 1 to 3 types, and more preferably 1 to 4 types, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (IX-2-2) is appropriately adjusted for each embodiment 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 (IX-2-2) is 1 to 30% by mass based on the total mass of the liquid crystal composition of the present invention, and is another embodiment. In another embodiment, it is 1 to 25% by mass, and in another embodiment, it is 1 to 20% by mass, and in still another embodiment, it is 1 to 15% by mass, and in still another embodiment, it is 1 to 11% by mass. Further, in another 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. In still another embodiment, It is 2 to 9 mass%, and further 7 to 10 mass% in another embodiment, 5 to 8 mass% in still another embodiment, and 8 to 11 mass% in still another embodiment.

Further, the compound represented by the formula (IX-2-2) is preferably at least one compound selected from the group consisting of compounds represented by formula (31.1) to formula (31.4), more preferably from formula (31.2). At least one compound selected from the group of compounds represented by the formula (31.4) is particularly preferably a compound 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, more preferably 1% by mass based on the total mass of the liquid crystal composition of the present invention. % or more and 25% by mass or less, particularly preferably 1% by mass or more and 20% by mass or less, and particularly preferably 1% by mass or more and 15% by mass or less. Among these, for example, it is preferably 1% by mass or more and 14% by mass or less, more preferably 2% by mass or more and 9 or more. The amount is preferably 7% by mass or more and 10% by mass or less, more preferably 5% by mass or more and 8% by mass or less, and still more preferably 8% by mass or more and 11% by mass or less.

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, more preferably 1% by mass based on the total mass of the liquid crystal composition of the present invention. The amount is preferably 15% by mass or less, more preferably 1% by mass or more and 5% by mass or less, and particularly preferably 2% by mass or more and 5% by mass or less.

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

The content of the compound represented by the above formula (IX-2-3) is considered to be solubility at a low temperature, transfer temperature, electrical reliability, etc., and is preferably 1 mass based on the total mass of the liquid crystal composition of the present invention. % or more is 30% by mass or less, more preferably 3% by mass or more and 20% by mass or less, and particularly preferably 6% by mass or more and 15% by mass or less, particularly preferably 8% by mass or more and 10% by mass or less.

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

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 considered to be solubility at a low temperature, transfer temperature, electrical reliability, etc., and is preferably 1 mass based on the total mass of the liquid crystal composition of the present invention. % or more is 30% by mass or less, more preferably 3% by mass or more and 20% by mass or less, and particularly preferably 6% by mass or more and 15% by mass or less, particularly preferably 8% by mass or more and 10% by mass or less.

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

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 that can be combined is not particularly limited, and solubility in a low temperature, transfer temperature, electrical reliability, birefringence, and the like are considered, and each embodiment is suitably used in combination. For example, in one embodiment of the present invention, there are one type, and in another embodiment, two types, in another embodiment, three types, and in still another embodiment, four types or more.

The content of the compound represented by the above formula (IX-2-5) is appropriately adjusted for each embodiment 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 (IX-2-5) is 1 to 30% by mass based on the total mass of the liquid crystal composition of the present invention, and is another embodiment. In another embodiment, it is 2 to 25% by mass, and in another embodiment, it is 5 to 25% by mass, and in still another embodiment, it is 5 to 20% by mass, and in still another embodiment, it is 5 to 8% by mass. Further, in another embodiment, it is 8 to 20% by mass, and in still another embodiment, it is 1 to 10% by mass, and in still another embodiment, it is 1 to 4% by mass.

When the viscosity of the liquid crystal composition of the present invention is kept low and a liquid crystal composition having a high reaction rate is required, it is preferable to make the above lower limit value slightly lower and the upper limit value to be slightly lower. In addition, when the liquid crystal composition of the liquid crystal composition of the present invention is kept high and a liquid crystal composition which is less likely to cause image sticking is required, it is preferable that the lower limit value is slightly lower and the upper limit value is made slightly lower. Further, in order to increase the dielectric anisotropy in order to maintain a low driving voltage, it is preferable to make the lower limit slightly higher and the upper limit to be slightly higher.

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

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

The content of the compound represented by the above formula (IX-3-1) is considered to be solubility at a low temperature, transfer temperature, electrical reliability, etc., and is preferably 3 mass based on the total mass of the liquid crystal composition of the present invention. % or more is 30% by mass or less, more preferably 7% by mass or more and 30% by mass or less, and particularly preferably 13% by mass or more and 20% by mass or less, and particularly preferably 15% by mass or more and 18% by mass or less.

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

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, 1 , 4-phenyl group or any of the groups shown in the following formula, except that the hydrogen atom on the 1,4-phenyl group may be substituted by a fluorine atom.

The compound which can be combined is not particularly limited, but 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 still 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, it is 5 or more types.

The content of the compound represented by the above formula (X) is appropriately adjusted for each embodiment 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 (X) is 2 to 45% by mass based on the total mass of the liquid crystal composition of the present invention, and is 3 in another embodiment. ~45% by mass, in another embodiment, 6 to 45% by mass, and in still another embodiment, 8 to 45% by mass, and in still another embodiment, 9 to 45% by mass, and further In one embodiment, it is 11 to 45% by mass, in another embodiment, 12 to 45% by mass, and in still another embodiment, 18 to 45% by mass, and in still another embodiment, 19 to 45% by weight. The mass % is 23 to 45% by mass in still another embodiment, and in another embodiment, the content is 25 to 45% by mass.

Further, for example, the content of the compound represented by the above formula (X) is one embodiment of the present invention with respect to the total mass of the liquid crystal composition of the present invention. 2 to 35% by mass in the other embodiment, 2 to 30% by mass in another embodiment, 2 to 25% by mass in still another embodiment, and 2 to 20% by mass in still another embodiment. In still another embodiment, it is 2 to 13% by mass, and in still another embodiment, 2 to 9% by mass, and in still another embodiment, 2 to 6% by mass, and in still another embodiment, 2 to 3 mass%.

When the viscosity of the liquid crystal composition of the present invention is kept low and a liquid crystal composition having a high reaction rate is required, it is preferable to make the above lower limit value slightly lower and the upper limit value to be slightly lower. Further, in the case of a liquid crystal composition which is less likely to cause image sticking, it is preferable to make the above lower limit value slightly lower and the upper limit value to be slightly lower. Further, in order to increase the dielectric anisotropy in order to maintain a low driving voltage, it is preferable to make the lower limit slightly higher and the upper limit to be slightly higher.

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 atom. Alkoxy groups numbered from 1 to 4.

The compound which can be combined is not particularly limited, and is considered to be suitable for each embodiment in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. For example, in one embodiment of the present invention, it is one type. Further, in still 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, it is 5 or more types.

The content of the compound represented by the above formula (X-1) is 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 (X-1) is 2 to 40% by mass based on the total mass of the liquid crystal composition of the present invention, and in another embodiment, 3 to 40% by mass, in another embodiment, 5 to 40% by mass, and in still another embodiment, 6 to 40% by mass, and in still another embodiment, 7 to 40% by mass, In still another embodiment, it is 8 to 40% by mass, and in still another embodiment, it is 9 to 40% by mass, and in still another embodiment, 13 to 40% by mass, and in still another embodiment, 18 ~40% by mass, in still another embodiment, 23 to 40% by mass.

Further, for example, the content of the compound represented by the above formula (X-1) is 2 to 30% by mass based on the total mass of the liquid crystal composition of the present invention, and is another embodiment. 2 to 25% by mass in the middle, 2 to 20% by mass in the other embodiment, 2 to 15% by mass in still another embodiment, and 2 to 10% by mass in still another embodiment, In still another embodiment, it is 2 to 6% by mass, and in still another embodiment, it is 2 to 4% by 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 is considered to be suitable for each embodiment in consideration of solubility at low temperature, 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, it is four or more types.

The content of the compound represented by the above formula (X-1-1) is 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 (X-1-1) is 3 to 30% by mass based on the total mass of the liquid crystal composition of the present invention, and is another embodiment. 4 to 30% by mass in the form, 6 to 30% by mass in still another embodiment, and 9 to 30% by mass in still another embodiment, and 12 to 30% by mass in still another embodiment. Further, in another embodiment, it is 15 to 30% by mass, and in still another embodiment, it is 18 to 30% by mass, and in still another embodiment, it is 21 to 30% by mass.

Further, for example, the content of the compound represented by the above formula (X-1-1) is 3 to 20% by mass based on the total mass of the liquid crystal composition of the present invention, and is another In the embodiment, 3 to 13% by mass, in another embodiment, 3 to 10% by mass, and in still another embodiment, 3 to 7% by mass.

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

Alternatively, 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) is 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 is another embodiment. In the other embodiment, it is 1 to 10% by mass, and in another embodiment, it is 1 to 6% by mass, and in still another embodiment, it is 1 to 4% by mass, and in still another embodiment, it is 1 to 4% by mass. In still another embodiment, it is 1 to 3% by mass.

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

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

Alternatively, 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 solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (X-1-3) is 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 is another embodiment. In another embodiment, it is 1 to 15% by mass, and in another embodiment, it is 1 to 10% by mass, and in still another embodiment, it is 1 to 8% by mass, and in still another embodiment, it is 1 to 5% by mass. .

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

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

In the liquid crystal composition of the present invention, the above formula (38.2) The content of the compound shown in the present invention is 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, even more preferably 1% by mass or more, based on the total mass of the liquid crystal composition of the present invention. The mass% or less is particularly 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 still more preferably 4% by mass or more and 5% by mass or less.

Alternatively, 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 which can be combined is not particularly limited, and one or two or more types are preferably combined in consideration of solubility at low temperature, 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, and it is preferably one type or two types or more, more preferably three types or more, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (X-2-1) is considered to be solubility at a low temperature, transfer temperature, electrical reliability, etc., and is preferably 1 mass based on the total mass of the liquid crystal composition of the present invention. % or more is 20% by mass or less, more preferably 1% by mass or more and 16% by mass or less, and particularly preferably 1% by mass or more and 12% by mass or less, and more 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 from 1 to 5% by mass, more preferably from 1 to 3, based on the total mass of the liquid crystal composition of the present invention. The mass% is particularly preferably 5 to 10% by mass, and more preferably 6 to 9% by mass.

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

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, more preferably 1% by mass based on the total mass of the liquid crystal composition of the present invention. % or more is 16% by mass or less, and particularly preferably 1% by mass or more and 12% by mass or less, and more preferably 3% by mass or more and 10% by mass or less. In the above, the content of the compound represented by the above formula (39.2) is preferably from 1 to 5% by mass, more preferably from 1 to 3% by mass, based on the total mass of the liquid crystal composition of the present invention. Preferably, it is 5 to 10% by mass, and more preferably 6 to 9% by mass.

Alternatively, 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 which can be combined is not particularly limited, and one or two or more types are preferably combined in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (X-2-2) is considered to be solubility at low temperature, transfer temperature, electrical reliability, etc., and is preferably 3 mass based on the total mass of the liquid crystal composition of the present invention. % or more is 20% by mass or less, more preferably 6% by mass or more and 16% by mass or less, and particularly preferably 9% by mass or more and 12% by mass or less, and more preferably 9% by mass or more and 10% by mass or less.

Further, the compound represented by the formula (X-2-2) used in the liquid crystal composition of the present invention is specifically preferably selected from the group of compounds represented by the formula (40.1) to the formula (40.4). At least one compound preferably contains a compound of the formula (40.2).

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 atom. Alkoxy groups numbered from 1 to 4.

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

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

The content of the compound represented by the above formula (X-3-1) is 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 is another embodiment. In another embodiment, it is 1 to 8% by mass, and in another embodiment, it is 1 to 6% by mass, and in still another embodiment, it is 1 to 4% by mass, and in still 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 preferably selected from the group of compounds represented by the formula (41.1) to the formula (41.4). At least one compound preferably contains a compound of the formula (41.2).

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 which can be combined is not particularly limited, and it is preferably one type or two types or more, more preferably three types or more, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

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 which can be combined is not particularly limited, and it is preferably one type or two types or more, more preferably three types or more, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (X-4-1) is 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, more preferably 5% by mass or more and 17% by mass based on the total mass of the liquid crystal composition of the present invention. % or less is particularly preferably 10% by mass or more and 15% 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 (X-4-1) used in the liquid crystal composition of the present invention is specifically preferably selected from the group of compounds represented by the formula (42.1) to the formula (42.4). At least one compound preferably contains a compound of the formula (42.3).

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-4-4).

In the above formula (X-4-4), 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 it is preferably one type or two types or more, more preferably three types or more, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

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

The content of the compound represented by the above formula (X-4-4) is preferably 2% by mass or more and 20% by mass or less, more preferably 5% by mass or more and 17% by mass based on the total mass of the liquid crystal composition of the present invention. % or less is particularly preferably 10% by mass or more and 15% 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 (X-4-4) used in the liquid crystal composition of the present invention is specifically preferably selected from the group of compounds represented by the formula (42.31) to the formula (42.34). At least one compound preferably contains a compound of the formula (42.33).

Alternatively, 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-4-2).

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 which can be combined is not particularly limited, and it is preferably one type or two types or more, more preferably three types or more, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (X-4-2) is considered to be solubility at low temperature, transfer temperature, electrical reliability, etc., and is preferably 2 mass based on the total mass of the liquid crystal composition of the present invention. % or more is 20% by mass or less, more preferably 5% by mass or more and 17% by mass or less, and particularly preferably 10% by mass or more and 15% by mass or less, and more preferably 10% by mass or more and 13% 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 preferably selected from the group of compounds represented by the formula (42.11) to the formula (42.14). At least one compound, more preferably a compound of the formula (42.13) and/or formula (42.14).

Alternatively, 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 which can be combined is not particularly limited, and it is preferably one type or two types or more, more preferably three types or more, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (X-4-3) is considered to be solubility at a low temperature, transfer temperature, electrical reliability, etc., and is preferably 2 mass based on the total mass of the liquid crystal composition of the present invention. % or more is 20% by mass or less, more preferably 5% by mass or more and 17% by mass or less, and particularly preferably 10% by mass or more and 15% by mass or less, and more preferably 10% by mass or more and 13% 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 preferably of the formula (42.21) to the formula. At least one compound selected from the group consisting of (42.24), more preferably a compound of the formula (42.22).

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.

The compound which can be combined is not particularly limited, and it is preferably one type or two types or more, more preferably three types or more, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

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 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 type or two types or more, more preferably three types or more, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

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

Alternatively, 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 which can be combined is not particularly limited, and one or two or more types are preferably combined in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (X-6) is 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 (X-6) 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, in another embodiment, 1 to 20% by mass, and in still another embodiment, 1 to 15% by mass, and in still another embodiment, 2 to 14% by mass, In still another embodiment, it is 2 to 12% by mass, and in still another embodiment, 2 to 9% by mass, and in still another embodiment, 2 to 8% by mass, and in still another embodiment, 2 ~6 mass%, in another embodiment, 2 to 5% by mass, in another embodiment, 3 to 14% by mass, and in still another embodiment, 5 to 14% by mass, In one embodiment, it is 7 to 14% by mass, and in still another embodiment, it is 8 to 14% 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 weight. In another embodiment, the mass % is 3 to 8% by mass, and in still another embodiment, 3 to 6% by mass, and in still another embodiment, 4 to 7% by mass, and still another embodiment. Medium is 4~5 mass%, and another implementation 5 to 8% by mass in the form, 5 to 6% by mass in the other embodiment, 7 to 8% by mass in still another embodiment, and 8 to 9% by mass in still another embodiment. .

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

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

The content of the compound represented by the above formula (X'-7) is considered to be solubility at low temperature, transfer temperature, electrical reliability, and birefringence. Such characteristics are suitable for adjustment.

For example, the content of the compound represented by the above formula (X'-7) is 4 to 30% by mass based on the total mass of the liquid crystal composition of the present invention, and is another embodiment. In the other embodiment, it is 5 to 30% by mass, and in another embodiment, it is 6 to 30% by mass, and in still another embodiment, it is 8 to 30% by mass, and in still another embodiment, it is 9 to 30% by mass. In still another embodiment, it is 11 to 30% by mass, and in still another embodiment, it is 14 to 30% by mass, and in still another embodiment, it is 18 to 30% by mass.

Further, for example, the content of the compound represented by the above formula (X'-7) is 4 to 20% by mass based on the total mass of the liquid crystal composition of the present invention, and is another embodiment. In the form, the content of the compound is 4 to 13% by mass, and in still another embodiment, the content of the compound is 4 to 10% by mass, and in still another embodiment, the content of the compound is 4 to 7 by mass. %.

Further, the compound represented by the formula (X'-7) used in the liquid crystal composition of the present invention is specifically preferably at least selected from the group of compounds represented by the formula (44.11) to the formula (44.14). A compound in which a compound represented by the formula (44.13) is more preferably contained.

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

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

Further, the compound represented by the above formula (X-8) is specifically preferably at least one compound selected from the group consisting of compounds of the formula (44.21) to the formula (44.24), and preferably contains the formula (44.22). ) the compound shown.

Alternatively, the compound represented by the above formula (X) is preferably a compound represented by the formula (X-9).

In the above formula (X-9), 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 that can be combined is not particularly limited, and is considered to be low. The solubility in the temperature, the transfer temperature, the electrical reliability, the birefringence, and the like are preferably one or two or more types.

The content of the compound represented by the above formula (X-9) is 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 (X-9) is 1 to 25% by mass based on the total mass of the liquid crystal composition of the present invention, and in another embodiment, 1 to 20% by mass, in another embodiment, 1 to 15% by mass, and in still another embodiment, 1 to 10% by mass, and in still another embodiment, 1 to 5% by mass, In still another embodiment, it is 1 to 3% by mass.

Further, the compound represented by the above formula (X-9) is specifically preferably at least one compound selected from the group consisting of compounds of the formula (44.31) to the formula (44.34), and preferably contains the formula (44.33). Or a compound represented by the formula (44.34).

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

In the above formula (XI), X ¹¹¹ to X ¹¹⁷ each independently represent a fluorine atom or a hydrogen atom, 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 is considered to have solubility at low temperature, transfer temperature, electrical reliability, birefringence, etc., for example, one type in one embodiment of the present invention, and 2 in another embodiment. In another embodiment, the type is a combination of three or more types.

The content of the compound represented by the above formula (XI) is 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 2 to 30% by mass based on the total mass of the liquid crystal composition of the present invention, and is 4 in another embodiment. ~30% by mass, in another embodiment, 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 further In one embodiment, it is 10 to 30% by mass, in another embodiment, 12 to 30% by mass, and in still another embodiment, 13 to 30% by mass, and in still another embodiment, 15 to 30% by weight. The mass % is 18 to 30% by mass in still another embodiment.

Further, for example, the content of the compound represented by the above formula (XI) is 2 to 25% by mass based on the total mass of the liquid crystal composition of the present invention, and in another embodiment, 2 to 20% by mass, in another embodiment, 2 to 15% by mass, and in still another embodiment, 2 to 10% by mass, and in still another embodiment, 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 (XI) is preferably slightly increased. When it is used for a liquid crystal display element having a small driving voltage, the content of the compound represented by the above formula (XI) is preferably slightly increased. Moreover, when it is used for a liquid crystal display element used in a low temperature environment, it is preferable that the content of the compound represented by the above formula (XI) is slightly small. When it is used for a liquid crystal composition of a liquid crystal display element having a fast reaction speed, it is preferred to The content of the compound represented by the above formula (XI) is slightly less.

Alternatively, 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 is considered to be suitable for each embodiment in consideration of solubility at low temperature, 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 used, and in still another embodiment, three types or more are combined.

The content of the compound represented by the above formula (XI-2) is preferably 1% by mass or more 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. 20% by mass or less, more preferably 3% by mass or more and 20% by mass or less, and particularly preferably 4% by mass or more and 20% by mass or less, particularly preferably 6% by mass or more and 15% by mass or less, and more preferably 9% by mass or more. 12% by mass or less.

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

Alternatively, the compound represented by the above formula (X) is preferably at least one compound selected from the group 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 carbon atom. ~4 alkoxy, Y ¹² represents a fluorine atom or -OCF ₃ .

The compound that can be combined is not particularly limited, and is considered to be low. The solubility in the temperature, the transfer temperature, the electrical reliability, the birefringence, and the like are preferably 1 to 3 or more, more preferably 1 to 4 or more.

Further, 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 which can be combined is not particularly limited, and in view of solubility at low temperature, transfer temperature, electrical reliability, birefringence and the like, it is preferred to combine 1 to 2 or more, and more preferably 1 to 3 or more.

The content of the compound represented by the above formula (XII-1) is preferably 1% by mass or more 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. 15% by mass or less, more preferably 2% by mass or more and 10% by mass or less, still more preferably 3% by mass or more and 8% by mass or less, and still more preferably 4% by mass or more and 6% by mass or less.

Further, the compound represented by the formula (XII-1) used in the liquid crystal composition of the present invention is specifically preferably at least one compound selected from the group consisting of compounds represented by the formulae (46.1) to (46.4). It preferably contains 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 to two or more types, more preferably one to three or more types, in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (XII-2) is based on solubility at low temperature, transfer temperature, electrical reliability, etc., with respect to The total mass of the liquid crystal composition of the present invention is preferably 1% by mass or more and 20% by mass or less, more preferably 3% by mass or more and 20% by mass or less, still more preferably 4% by mass or more and 17% by mass or less, and particularly preferably 6% by mass or more and 15% by mass or less, and more 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 preferably at least one selected from the group consisting of compounds represented by the formula (47.1) to the formula (47.4). The compound preferably contains 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 carbon atom. ~4 alkoxy, Y ¹³ represents a fluorine atom or -OCF ₃ .

The type of the compound which can be combined is not particularly limited, and preferably contains 1 to 2 kinds of these compounds, more preferably 1 to 3 types, and particularly preferably 1 to 4 types.

The content of the compound represented by the above formula (XIII) is 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 (XIII) is 2 to 30% by mass based on the total mass of the liquid crystal composition of the present invention, and is 4 in another embodiment. ~30% by mass, in another embodiment, 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 further In one embodiment, it is 11 to 30% by mass, in another embodiment, 13 to 30% by mass, and in still another embodiment, 14 to 30% by mass, and in still another embodiment, 16 to 30% by weight. The mass % is 20 to 30% by mass in still another embodiment.

Further, for example, the content of the compound represented by the above formula (XIII) is relative to the total mass of the liquid crystal composition of the present invention, and is in the present invention. In one embodiment, the content is 2 to 25% by mass. In another embodiment, the content of the compound is 2 to 20% by mass. In still another embodiment, the content of the compound is 2 to 15% by mass. In another embodiment, the content of the compound is 2 to 10% by mass, and in still another embodiment, the content of the compound is 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 slightly increased. When it is used for a liquid crystal display element having a small driving voltage, the content of the compound represented by the above formula (XIII) is preferably slightly increased. Moreover, when it is used for a liquid crystal display element used in a low temperature environment, it is preferable that the content of the compound represented by the above formula (XIII) is slightly small. When it is used for a liquid crystal composition of a liquid crystal display element having a high reaction rate, the content of the compound represented by the above formula (XIII) is preferably slightly less.

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. It is preferably contained in an amount of 5 mass% or more and 20 mass% or less, and particularly preferably 10 mass% or more. Below mass%.

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 (48.1) to the formula (48.4), more preferably represented by the formula (48.2). Compound.

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 types of compounds that can be combined are not particularly limited. It is preferable to contain 1 to 2 types or more of these.

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. It is preferably 1% by mass or more and 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 10% by mass or less, more preferably 3% by mass or more, based on the total mass of the liquid crystal composition of the present invention. 6% by weight or less, particularly preferably 6% by mass or more and 14% by mass or less, and more preferably 10% 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 of compounds represented by the formula (49.1) to the formula (49.4), more preferably the formula (49.1) and/or A compound of the formula (49.2).

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 kind of the compound which can be combined is not particularly limited, and it is preferable to contain 1 to 2 of these.

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, more preferably 4% 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 9% by mass or more and 17% by mass or less, and more preferably 11% by mass or more and 14% by mass or less.

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), more preferably formula (50.1) and/or Or a compound represented by the formula (50.2).

Alternatively, 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 It represents 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 types of compounds that can be combined are not particularly limited, and solubility at low temperature, transfer temperature, electrical reliability, and birefringence are considered. Rate, etc., are suitable for each embodiment. 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, in still another embodiment of the present invention, there are 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 types.

The content of the compound represented by the above formula (XIV) is 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 (XIV) is from 3 to 40% by mass based on the total mass of the liquid crystal composition of the present invention, and is 7 in another embodiment. ~40% by mass, in another embodiment, 8 to 40% by mass, and in still another embodiment, 11 to 40% by mass, and in still another embodiment, 12 to 40% by mass, and further In one embodiment, it is 16 to 40% by mass, in another embodiment, it is 18 to 40% by mass, and in still another embodiment, it is 19 to 40% by mass, and in still another embodiment, it is 22 to 40%. The mass % is 25 to 40% by mass in still another embodiment.

Further, for example, the content of the compound represented by the above formula (XIV) is from 3 to 35% 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 3 to 30% by mass, in another embodiment, 3 to 25% by mass, and in still another embodiment, 3 to 20% by mass, and in still another embodiment, 3 to 15% by mass.

When the liquid crystal composition of the present invention is used, the driving voltage is small When the liquid crystal display device is used, the content of the compound represented by the above formula (XIV) is preferably slightly increased. Further, in the case of a liquid crystal composition used for a liquid crystal display element having a high reaction rate, the content of the compound represented by the above formula (XIV) is preferably 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 kind of the compound which can be combined is not particularly limited, and it is preferable to combine 1 to 3 types in consideration of solubility at low temperature, transfer temperature, electrical reliability, birefringence and the like.

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) is 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 (XIV-1) is relatively The total mass of the liquid crystal composition of the present invention is 2% by mass or more and 30% by mass in one embodiment of the present invention, and 4% by mass or more and 30% by mass in another embodiment. In still another embodiment, In another embodiment, it is 10 mass % or more and 30 mass % or less, and in another embodiment, it is 18 mass % or more and 30 mass % or less.

In addition, the content of the compound of the above formula (XIV-1) is, for example, 2% by mass or more and 27% by mass or less based on the total mass of the liquid crystal composition of the present invention. In one embodiment, it is 2% by mass or more and 24% by mass or less, and in still another embodiment, it is 2% by mass or more and less than 21% by mass.

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

Alternatively, 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 considered to be solubility at low temperature, transfer temperature, electrical reliability, etc., and is preferably 1 mass based on the total mass of the liquid crystal composition of the present invention. % or more is 15% by mass or less, more preferably 3% by mass or more and 13% by mass or less, and particularly preferably 5% by mass or more and 11% by mass or less, and more preferably 7% by mass or more and 9% by mass or less.

Further, the compound represented by the formula (XIV-1-2) is specifically preferably at least one compound selected from the group consisting of compounds represented by formula (52.1) to formula (52.4), wherein the preferred formula ( 52.4) The compound shown.

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 The fluorine atom or the hydrogen atom is independently represented, and Y ¹⁴ represents a fluorine atom, a chlorine atom or -OCF ₃ .

The type of the compound which can be combined is not particularly limited, and solubility in a low temperature, transfer temperature, electrical reliability, birefringence, and the like are considered, and each embodiment is suitably combined. For example, in one embodiment of the present invention, it is one type. Furthermore, in another embodiment of the present invention, 2 types. Alternatively, in still another embodiment of the present invention, there are three types. Further, in still another embodiment of the present invention, there are four types. Alternatively, in still another embodiment of the present invention, it is five or more types.

The content of the compound represented by the above formula (XIV-2) is 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 (XIV-2) is from 3 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 7 to 40% by mass, in another embodiment, 8 to 40% by mass, and in still another embodiment, 10 to 40% by mass, and in still another embodiment, 11 to 40% by mass, In still another embodiment, it is 12 to 40% by mass, and in still another embodiment, it is 18 to 40% by mass, and in still another embodiment, 19 to 40% by mass, and in still another embodiment, 21 ~40% by mass, and in still another embodiment, it is 22 to 40% by mass.

Further, for example, the content of the compound represented by the above formula (XIV-2) is 3 to 35 mass% in one embodiment of the present invention with respect to the total mass of the liquid crystal composition of the present invention, and another embodiment In the other embodiment, it is 3 to 25% by mass, and in another embodiment, it is 3 to 20% by mass, and in still another embodiment, it is 3 to 15% by mass, and in still another embodiment, it is 3 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) is preferably slightly increased. Further, in the case of a liquid crystal composition used for a liquid crystal display element having a high reaction rate, the compound represented by the above formula (XIV-2) is preferably used. The content is slightly less.

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 considered to be solubility at low temperature, transfer temperature, electrical reliability, etc., and is preferably 1 mass based on the total mass of the liquid crystal composition of the present invention. % or more is 15% by mass or less, more preferably 3% by mass or more and 13% by mass or less, and particularly preferably 5% by mass or more and 11% by mass or less, and more preferably 7% by mass or more and 9% by mass or less.

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

Or / further, the compound represented by the above formula (XIV-2) A compound represented by the formula (XIV-2-2) is preferred.

In the above formula (XIV-2-2), R ¹⁴ 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 considered to be solubility at low temperature, transfer temperature, electrical reliability, etc., and is preferably 3 mass based on the total mass of the liquid crystal composition of the present invention. % or more is 20% by mass or less, more preferably 5% by mass or more and 17% by mass or less, and particularly preferably 5% by mass or more and 15% by mass or less, and more preferably 5% by mass or more and 9% by mass or less.

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

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (54.2) is preferably 5% by mass or more and 35% by mass or less, more preferably 5% by mass based on the total mass of the liquid crystal composition of the present invention. 5% by mass or less, more preferably 5% by mass or more and 22% by mass or less, particularly preferably 6% by mass or more and 20% by mass or less, more preferably 6% by mass or more and 15% by mass or less, particularly preferably 6% by mass or less The above 9 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 considered to be solubility at a low temperature, transfer temperature, electrical reliability, etc., and is preferably 5 mass based on the total mass of the liquid crystal composition of the present invention. %the above 30% by mass or less, more preferably 9% by mass or more and 27% by mass or less, particularly 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) is specifically preferably at least one compound selected from the group consisting of compounds represented by the formula (55.1) to the formula (55.4), wherein the preferred formula ( 55.2) and / or a compound of the formula (55.4).

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 particularly limited, and solubility in a low temperature, transfer temperature, electrical reliability, birefringence, and the like are considered, and each embodiment is suitably combined. 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, in still another embodiment of the present invention, it is three or more types.

The content of the compound represented by the above formula (XIV-2-4) is appropriately adjusted for each embodiment 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 (XIV-2-4) is 1 to 20% by mass based on the total mass of the liquid crystal composition of the present invention, and is another embodiment. The form is 1 to 15% by mass in the form, 1 to 10% by mass in still another embodiment, and 1 to 9% by mass in still another embodiment, and 1 to 3% by mass in still another embodiment. In still another embodiment, it is 6 to 9 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 slightly increased. Further, in the case of a liquid crystal composition used for a liquid crystal display device having a high reaction rate, the content of the compound represented by the above formula (XIV-2-4) is preferably slightly less.

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

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 considered to be solubility at low temperature, transfer temperature, electrical reliability, etc., and is preferably 5 mass based on the total mass of the liquid crystal composition of the present invention. % or more and 25% by mass or less, more preferably 10% by mass or more and 22% by mass or less, particularly preferably It is 13% by mass or more and 18% by mass or less, and more preferably 13% by mass or more and 15% by mass or less.

Further, the compound represented by the above formula (XIV-2-5) is specifically preferably at least one compound selected from the group consisting of compounds represented by formula (57.1) to formula (57.4), preferably containing (57.1) The compound shown.

Alternatively, the compound represented by the formula (XIV-2) is preferably a compound of 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 considered to be solubility at a low temperature, transfer temperature, electrical reliability, etc., and is preferably 5 mass based on the total mass of the liquid crystal composition of the present invention. % or more is 25% by mass or less, more preferably 10% by mass or more and 22% by mass or less, and particularly preferably 15% by mass or more and 20% by mass or less, and more preferably 15% by mass or more and 17% by mass or less.

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

Alternatively, the compound represented by the above formula (XIV) is preferably a compound of 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 it is suitably used in combination according to the desired properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one type in one embodiment of the present invention. Alternatively, in another embodiment of the present invention, it is two or more types.

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

Further, the compound represented by the above formula (XIV-3) is specifically preferably at least one compound selected from the group consisting of compounds represented by formula (61.1) to formula (61.4), more preferably formula (61.1) and / or a compound of the formula (61.2).

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, a 1,4-phenylene group or a group represented by the following formula, wherein a 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, but 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 still 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, it is 5 or more types.

The content of the compound represented by the above formula (XV) is appropriately adjusted for each embodiment 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 (XV) is 0.5 to 30% by mass based on the total mass of the liquid crystal composition of the present invention, and is 1 in another embodiment. ~30% by mass, in another embodiment, 3 to 30% by mass, and in another embodiment, 6 to 30% by mass, and in still another embodiment, 9 to 30% by mass, and further In one embodiment, it is 11 to 30% by mass, in another embodiment, 12 to 30% by mass, and in still another embodiment, 18 to 30% by mass, and in still another embodiment, 19 to 30%. The mass % is 23 to 30% by mass in still another embodiment, and in 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 based on the total mass of the liquid crystal composition of the present invention, and in another embodiment, 0.5 to 20% by mass, and 0.5 to 13% by mass in the other embodiment, in yet another embodiment In the other state, 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 which can be combined is not particularly limited, and one or two or more types are preferably combined in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (XV-1) is 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 (XV-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, 1 to 20% by mass, 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, In still another 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 preferably at least one selected from the group consisting of compounds represented by the formulae (59.1) to (59.4). Compound, of which More preferably, it contains 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 which can be combined is not particularly limited, and one or two or more types are preferably combined in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (XV-2) is 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 (XV-2) is considered in view of solubility at low temperature, transfer temperature, electrical reliability, birefringence, etc., relative to the total mass of the liquid crystal composition of the present invention. It is preferably from 0.5% by mass to 20% by mass, more preferably from 1% by mass to 15% by mass, even more preferably from 1% by mass to 10% by mass, even more preferably from 1% by mass to 4% by mass.

Further, the compound represented by the formula (XV-2) used in the liquid crystal composition of the present invention is specifically preferably at least one selected from the group consisting of compounds represented by the formulae (60.1) to (60.4). A compound, more preferably a compound represented by the formula (60.2).

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

In the above formula (XV-3), 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 which can be combined is not particularly limited, and one or two or more types are preferably combined in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (XV-3) is considered to be solubility at low temperature, transfer temperature, electrical reliability, and birefringence. Such characteristics are suitable for adjustment.

For example, the content of the compound represented by the above formula (XV-3) is considered in view of solubility at low temperature, transfer temperature, electrical reliability, birefringence, etc., relative to the total mass of the liquid crystal composition of the present invention. It is preferably 0.5% by mass or more and 20% by mass or less, more preferably 1% by mass or more and 15% by mass or less, still more preferably 1% by mass or more and 10% by mass or less, and still more preferably 1% by mass or more and 5% by mass or less.

Further, the compound represented by the formula (XV-3) used in the liquid crystal composition of the present invention is specifically preferably at least one selected from the group consisting of compounds represented by the formula (64.1) to the formula (64.4). A compound wherein the compound of the formula (64.1) or the formula (64.2) is more preferably contained.

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.

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

The content of the compound represented by the above formula (XV') is 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 (XV') is considered to be solubility at low temperature, transfer temperature, electrical reliability, birefringence, etc., and is preferably based on the total mass of the liquid crystal composition of the present invention. It is 0.5% by mass or more and 20% by mass or less, more preferably 1% by mass or more and 15% by mass or less, and particularly preferably 1% by mass or more and 10% by mass or less, and more preferably 1% by mass or more and 4% by mass or less.

Further, the compound represented by the formula (XV') used in the liquid crystal composition of the present invention is specifically preferably at least one compound selected from the group consisting of compounds represented by formula (65.1) to formula (65.4). More preferably, the compound represented by the formula (65.2) is contained.

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

In the above formula (XVI), R ¹⁶⁰ 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 ¹⁶¹ to X ¹⁶⁴ are each independently Represents a fluorine atom or a hydrogen atom, Y ¹⁶ represents a fluorine atom, a chlorine atom or -OCF ₃ , and A ¹⁶ represents a 1,4-cyclohexylene group or a 1,4-phenylene group, but the above 1,4-phenylene group The hydrogen atom may also be substituted by a fluorine atom.

The types of compounds that can be combined are not limited, and are 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. also 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, it is 5 or more types.

The content of the compound represented by the above formula (XVI) is appropriately adjusted for each embodiment 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 (XVI) is 1 to 30% by mass based on the total mass of the liquid crystal composition of the present invention, and is 3 in another embodiment. ~25% by mass, in another embodiment, 6 to 23% by mass, and in still another embodiment, 9 to 23% by mass, and in still another embodiment, 12 to 23% by mass, and further In one embodiment, it is 15 to 23% by mass, and in still another embodiment, it is 19 to 23% by mass.

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

In the above formula (XVI-1), R ¹⁶⁰ 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 types are preferably combined in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (XVI-1) is 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 (XVI-1) 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 10% by mass, and in another embodiment, it is 3 to 10% by mass, and in still another embodiment, it is 3 to 9% by mass.

Further, the compound represented by the formula (XVI-1) used in the liquid crystal composition of the present invention is specifically preferably at least one selected from the group consisting of compounds represented by formula (62.1) to formula (62.4). A compound wherein the compound of the formula (62.2) is more preferably contained.

Or / again, the compound represented by the above formula (XVI) is more A compound represented by the formula (XVI-2) is preferred.

In the above formula (XVI-2), R ¹⁶⁰ 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 types are preferably combined in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (XV-2) is 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 (XV-2) is considered in view of solubility at low temperature, transfer temperature, electrical reliability, birefringence, etc., relative to the total mass of the liquid crystal composition of the present invention. It is preferably 0.5% by mass or more and 20% by mass or less, more preferably 1% by mass or more and 15% by mass or less, still more preferably 1% by mass or more and 10% by mass or less, and still more preferably 1% by mass or more and 4% by mass or less.

Further, the compound represented by the formula (XVI-2) used in the liquid crystal composition of the present invention is specifically preferably at least one selected from the group consisting of compounds represented by formula (63.1) to formula (63.4). A compound wherein the compound of the formula (63.2) is more preferably contained.

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

In the above formula (XVII), R ¹⁷⁰ 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 types are preferably combined in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (XVII) is 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 (XVII) is preferably 1% by mass or more 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. It is 20% by mass or less, more preferably 1% by mass or more and 15% by mass or less, and particularly 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.

Further, the compound represented by the formula (XVII) used in the liquid crystal composition of the present invention is specifically preferably at least one compound selected from the group consisting of compounds represented by the formulae (66.1) to (66.4). More preferably, the compound represented by the formula (66.2) is contained.

The liquid crystal composition of the present invention is preferably a compound which does not contain a structure in which an oxygen atom having a peracid (-CO-OO-) structure or the like is bonded to each other in the molecule.

Pay attention to the reliability and long-term stability of liquid crystal compositions The content of the compound having a carbonyl group is preferably 5% by mass or less, more preferably 3% by mass or less, even more preferably 1% by mass or less, based on the total mass of the above-mentioned composition, and is preferably substantially not 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, more preferably 10% by mass or less, even more preferably 5% by mass or less, based on the total mass of the composition. Jia is not actually included.

Preferably, the content of the compound having a ring structure of 6 members is increased in the molecule, and the content of the compound having a ring structure of 6 members is preferably 80% by mass or more, more preferably the total mass of the composition. It is 90% by mass or more, and particularly preferably 95% by mass or more. It is preferable to form a liquid crystal composition only by a compound having a ring structure of substantially 6 in the molecule.

In order to suppress deterioration of the liquid crystal composition due to oxidation, it is preferred to reduce the content of the compound having a cyclohexene group as a ring structure, and the content of the compound having a cyclohexene group is preferably relative to the total mass of the above composition. 10% by mass or less, more preferably 5% by mass or less, and particularly preferably substantially not contained.

When attention is paid to the improvement of viscosity and the improvement of Tni, it is preferred to reduce the content of a compound having a 2-methylbenzene-1,4-diyl group in which a hydrogen atom can be substituted into a halogen, and the above has 2 in the molecule. The content of the -methylbenzene-1,4-diyl compound is preferably 10% by mass or less, more preferably 5% by mass or less, and particularly preferably substantially not contained, based on the total mass of the above-mentioned composition.

When the compound contained in the composition of the first embodiment of the present invention has an alkenyl group as a side chain, when the alkenyl group is bonded to the ring In the case of hexane, the number of carbon atoms of the alkenyl group is preferably from 2 to 5. When the alkenyl group is bonded to benzene, the number of carbon atoms of the alkenyl group is preferably from 4 to 5, and the unsaturated bond of the alkenyl group is Preferably, benzene is not directly bonded.

In the liquid crystal display device 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 is, for example, a six-membered ring having a biphenyl derivative or a biphenyl derivative. A polymerizable compound or the like of a liquid crystal skeleton which is connected in plural. 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 all of the 1,4-phenylene groups in the formula may be any hydrogen atom. Replaced by a fluorine atom.

Preferably, both of X ²⁰¹ and X ²⁰² represent a diacrylate derivative of a hydrogen atom, and a dimethacrylate derivative each having a methyl group, and preferably one of them represents a hydrogen atom, and the other One represents a compound of a methyl group. The polymerization rate of these compounds is the fastest in the diacrylate derivative, the dimethacrylate derivative is slow, and the asymmetric compound is in the middle thereof, and the 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 alkylene group having 1 to 8 carbon atoms or -O-(CH ₂ ) _s -, but in the PSA display element, at least one is preferably a single bond. Preferred are all compounds which represent a single bond, or one of which is 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 of 1 to 4 is preferable, and s is preferably 1 to 4.

Z ^{201 is} preferably -OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, -CF ₂ O-, -OCF ₂ -, -CH ₂ CH ₂ -, -CF ₂ CF ₂ - or The key is more preferably -COO-, -OCO- or a single bond, and particularly preferably a single bond.

M ²⁰¹ represents a 1,4-phenylene group, a trans-1,4-cyclohexylene group or a single bond in which an arbitrary hydrogen atom may be substituted by a fluorine atom, and is preferably a 1,4-phenylene group or a single bond. When M ²⁰¹ represents a ring structure other than a single bond, Z ^{201 is} preferably a linking group other than a single bond, and when M ²⁰¹ is a single bond, Z ^{201 is} preferably a single bond.

Based on these points, in the general formula (XX), the ring structure between Sp ²⁰¹ and Sp ²⁰² is specifically preferably the structure described below.

In the above formula (XX), when M ²⁰¹ represents a single bond and the ring structure is formed by two rings, it preferably represents the following formula (XXa-1) to formula (XXa-5), and more preferably represents the formula (XXa-). 1) ~ (XXa-3), especially good expression (XXa-1).

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

The polymerizable compound containing these skeletons is most suitable for a PSA type liquid crystal display element because of the alignment control force after polymerization, and a good alignment state is obtained. Therefore, display unevenness is suppressed or does not occur at all.

From the above, as the polymerizable monomer, at least one compound selected from the group consisting of compounds represented by the general formulae (XX-1) to (XX-4) is preferable, and more preferably, it is a general formula (XX- 2) The compound shown.

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

When a monomer is added to the liquid crystal composition of the present invention, polymerization is carried out even when 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, diphenylketones, acetophenones, benzyl ketals, and mercaptophosphine oxides.

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

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 are not directly adjacent to each other with an oxygen atom. In a manner, it can be substituted by -O-, -CH=CH-, -CO-, -OCO-, -COO-, -C≡C-, -CF ₂ O-, -OCF ₂ -, and M ^Q represents trans - 1,4-cyclohexyl, 1,4-phenyl or 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 -, preferably a linear alkane having 1 to 20 carbon atoms a linear alkyl group, a linear alkoxy group, a linear CH ₂ group substituted with -OCO- or -COO-, a branched alkyl group, a branched alkoxy group, and a CH ₂ group substituted with -OCO a branched alkyl group of -OR-COO-, more preferably 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 The base, branched alkoxy group, and one CH ₂ group are substituted with a branched alkyl group of -OCO- or -COO-.

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

The compound represented by the above formula (Q) is preferably at least one compound selected from the group consisting of compounds represented by the following formula (Qa) to formula (Qd), more preferably a formula (Qc) and/or Or a compound represented by (Qd).

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, R ^Q3 Preferred is a linear alkyl group having 1 to 8 carbon atoms, a branched alkyl group, a linear alkoxy group or a branched alkoxy group, and L ^{Q is} preferably a linear alkyl group having 1 to 8 carbon atoms or Branched alkyl.

In the liquid crystal composition of the present invention, it is preferred to contain one or two kinds of compounds represented by the above formula (Q), more preferably one to five kinds, and the content thereof is relative to the liquid crystal composition of the present invention. The total mass is preferably 0.001 to 1% by mass, more preferably 0.001 to 0.1% by mass, still more 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 borrowed A liquid crystal display element which is obtained by polymerizing a polymerizable compound contained therein by ultraviolet irradiation to impart a liquid crystal alignment ability, and is used for controlling the amount of light transmitted by the birefringence of the liquid crystal composition. For liquid crystal display elements, suitable for ECB-LCD, VA-LCD, FFS-LCD, AM-LCD (active matrix liquid crystal display device), TN (nematic liquid crystal display device), STN-LCD (super twisted nematic liquid crystal display) Components, OCB-LCD and IPS-LCD (in-plane switching liquid crystal display elements), especially for AM-LCD, can be used for transmissive or reflective liquid crystal display elements.

The two substrates of the liquid crystal cell used in the liquid crystal display element can be made of a transparent material such as glass or plastic, and one of them can also be made of an opaque material such as tantalum. The transparent substrate having a transparent electrode layer can be obtained, for example, by 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, an electrodeposition method, a dyeing method, or the like. An example of a method for producing a color filter by a pigment dispersion method is to apply a curable coloring composition for a color filter to a transparent substrate, apply a patterning treatment, and then heat or lightly irradiate. Harden. By performing this step for each of the three colors of red, green, and blue, a pixel portion for a color filter can be formed. 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 substrates are opposed to each other such that the transparent electrode layer is inside. In this case, the interval between the substrates can also be adjusted via the spacer. In this case, it is preferred to adjust so that the thickness of the obtained light control layer is 1 to 100 μm. 1.5 to 10 μm is more preferable, and when a polarizing plate is used, it is preferably The product of the refractive index anisotropy Δn of the liquid crystal and the thickness d of the unit cell is adjusted in such a manner that the contrast becomes the largest. Further, when there are two polarizing plates, the polarizing axes of the respective polarizing plates can be adjusted, and the viewing angle or contrast can be adjusted in a good manner. Further, in order to increase the viewing angle, a retardation film can also be used. Examples of the spacer include a columnar spacer formed of glass particles, plastic particles, alumina particles, a photoresist material, or the like. Then, a sealant such as an epoxy thermosetting composition is screen-printed on the substrate in the form of a liquid crystal injection port, and the substrates are bonded to each other and heated to thermally cure the sealant.

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, although the dropping trace does not occur, the problem of residual trace of the injection is more suitable for the display element manufactured by the ODF method in the invention of the present invention. In the liquid crystal display element manufacturing step of the ODF method, an epoxy-based photothermal heat is used as a closed-loop embankment in a sealing agent such as hardenability by using a dispenser on any of the back sheet or the front sheet. After dropping a specified amount of the liquid crystal composition under degassing, the front plate and the back plate are bonded to each other to manufacture a liquid crystal display element. The liquid crystal composition of the present invention can be suitably used because the dropping of the liquid crystal composition is carried out in the ODF step.

As a method of polymerizing the polymerizable compound, in order to obtain a good alignment property of the liquid crystal, it is preferred to have a moderate polymerization rate. Therefore, it is preferred to polymerize by direct or alternately or alternately irradiating active energy rays such as ultraviolet rays or electron beams. The method. When using ultraviolet light, a polarized light source or a non-polarized light source can be used. Moreover, it is sandwiched between two substrates When the polymerization is carried out in the state of the liquid crystal composition of the polymerizable compound, at least the substrate on the irradiation surface side must have appropriate transparency to the active energy ray. Further, it is also possible to use a mask to modulate only a specific portion after light irradiation, and to change the alignment state of the unpolymerized portion by changing conditions such as an electric field, a magnetic field, or a temperature, and then irradiate the active energy ray so that the active energy ray is irradiated. The means of aggregation. In particular, in the case of ultraviolet light exposure, it is preferred to perform ultraviolet exposure while applying an alternating electric field to the liquid crystal composition containing the polymerizable compound. The applied alternating electric field is preferably an alternating current having a frequency of 10 Hz to 10 kHz, more preferably a frequency of 60 Hz to 10 kHz, and the voltage is selected depending on the desired pretilt angle of 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 device of the transverse electric field type MVA mode, it is preferable to control the pretilt angle from 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 in which the liquid crystal state of the liquid crystal composition of the present invention is maintained. Preferably, the polymerization is carried out at a temperature close to room temperature, i.e., typically at a temperature of from 15 to 35 °C. As the lamp for generating ultraviolet rays, a metal halide lamp, a high pressure mercury lamp, an ultrahigh pressure mercury lamp, or the like can be used. Further, as the wavelength of the ultraviolet ray to be irradiated, it is preferred to irradiate the ultraviolet ray which is not in the wavelength range of the absorption wavelength range of the liquid crystal composition, and it is preferable to use the ray for cutting ultraviolet rays as needed. The intensity of the ultraviolet ray to be irradiated is preferably from 0.1 mW/cm ² to 100 W/cm ² , more preferably from 2 mW/cm ² to 50 W/cm ² . The energy of the ultraviolet ray to be irradiated can be suitably adjusted, and is preferably from 10 mJ/cm ² to 500 J/cm ² , more preferably from 100 mJ/cm ² to 200 J/cm ² . When the ultraviolet ray is irradiated, the intensity can also be changed. The time for irradiating the ultraviolet rays is appropriately selected depending on the intensity of the ultraviolet rays to be irradiated, and is preferably from 10 seconds to 3600 seconds, more preferably from 10 seconds to 600 seconds.

The liquid crystal display element using the liquid crystal composition of the present invention can be used for suppressing high-speed reaction and display failure, and is particularly useful for a liquid crystal display element for active matrix driving, and is applicable to VA mode, PSVA mode, PSA mode, IPS ( In-plane switching mode, FSS (Fringe Field Switching) mode or ECB mode liquid crystal display element.

Hereinafter, a preferred embodiment of the liquid crystal display of the present invention will be described in detail with reference to the drawings.

Fig. 1 is a cross-sectional view showing a liquid crystal display device including two substrates facing each other, a sealing material provided between the substrates, and a liquid crystal sealed in a closed region surrounded by the sealing material.

Specifically, a specific aspect of the liquid crystal display device is provided, and the TFT substrate 102 and the pixel electrode 103 are provided on the first substrate 100, and a back sheet of the passivation film 104 and the first alignment film 105 is provided thereon; On the second substrate 200, a black matrix 202, a color filter 203, a flattening film (cover layer) 201, and a transparent electrode 204 are provided, and a second alignment film 205 is provided from above to face the front plate. a sealing material 301 disposed between the substrates; and a liquid crystal layer 303 enclosed in the area of the enclosed area surrounded by the sealing material; wherein the substrate surface of the sealing material 301 is in contact with a protrusion (columnar spacer) 302, 304.

The material of the first substrate or the second substrate is not particularly limited as long as it is substantially transparent, and glass, ceramics, plastic, or the like can be used. As the plastic substrate, cellulose derivatives such as cellulose, triacetyl cellulose, and diethyl phthalocyanine, polycycloolefin derivatives, polyethylene terephthalate, polyethylene naphthalate, and the like can be used. Polyester, polypropylene Polyolefin, polyethylene, polyvinyl alcohol, polyvinyl chloride, polyvinylidene chloride, polyamide, polyimine, polyamidamine, polystyrene, polyacrylate Polymethyl methacrylate, polyether oxime, polyarylate, and inorganic-organic composite materials such as glass fiber-epoxy resin, glass fiber-acrylic resin, and the like.

Further, when a plastic substrate is used, it is preferable to provide a barrier film. The function of the barrier film is to lower the moisture permeability of the plastic substrate and improve the reliability of the electrical characteristics of the liquid crystal display element. The barrier film is not particularly limited as long as it has high transparency and low water vapor permeability. Generally, an inorganic material such as cerium oxide is used, and vapor deposition or sputtering or chemical vapor deposition (CVD) is used. The film formed.

In the present invention, the first substrate or the second substrate may be the same material or different materials, and is not particularly limited. When a glass substrate is used, a liquid crystal display element excellent in heat resistance and dimensional stability can be produced. Further, in the case of a plastic substrate, it is preferably a method of producing a roll-to-roll method, and is preferably lighter or more flexible. In addition, in order to provide flatness and heat resistance, good results can be obtained by combining a plastic substrate and a glass substrate.

Further, in the embodiment described later, a substrate made of the material of the first substrate 100 or the second substrate 200 is used.

In the back sheet, the TFT layer 102 and the pixel electrode 103 are provided on the first substrate 100. These can be manufactured by the usual array steps. The passivation film 104 and the 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 a TFT, and is usually formed by a chemical vapor phase epitaxy (CVD) technique or the like. Film (SiNx), oxide film (SiOx), and the like.

Further, the first alignment film 105 has a function of aligning the liquid crystal, and a polymer material such as polyimine is usually used. An alignment agent solution made of a polymer material and a solvent is used in the coating liquid. Since the alignment film has the possibility of hindering the adhesion to the sealing material, the pattern is applied in the closed region. A printing method such as an offset printing method, a droplet discharge method such as inkjet is used for coating. The coated alignment agent solution is cured by crosslinking after evaporation of the solvent by temporary drying. Then, in order to exhibit the alignment function, alignment processing is performed.

The alignment process is usually performed by a rubbing method. The liquid crystal alignment ability is produced by unidirectional rubbing on a polymer film formed as described above by using a rubbing cloth made of fibers such as ruthenium.

Also, there is also the use of the optical alignment method. The photo-alignment method produces a aligning ability by irradiating a polarized light on an alignment film containing a photoreceptive organic material, and does not cause damage or dust of the substrate due to the rubbing method. As an example of the organic material of the photo-alignment method, there is a material containing a dichroic dye. As the dichroic dye, an alignment induction or isomerization reaction (for example, azobenzene) or a dimerization reaction of a molecule caused by a Weigert effect due to photochromism can be used (example: Cassia ruthenium), photocrosslinking reaction (eg diphenyl ketone group) or photodecomposition reaction (eg poly(fluorene imino group)) is the basis of photoreaction of the origin of liquid crystal alignment ability (hereinafter referred to as photo-alignment) Base). 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 ability in an arbitrary direction can be obtained.

The front plate on one side is provided with a black moment on the second substrate 200 The array 202, the color filter 203, the planarizing film 201, the transparent electrode 204, and the second alignment film 205.

The black matrix 202 is produced, for example, by a pigment dispersion method. Specifically, on the second substrate 200 provided with the barrier film 201, a colored resin liquid in which a black colorant for forming a black matrix is uniformly dispersed is applied to form a colored layer. Next, the colored layer is baked to be hardened. The photoresist is coated thereon and pre-baked. After the photoresist is exposed by the mask pattern, development is performed to pattern the colored layer. Then, the photoresist layer is peeled off, and the colored layer is baked to complete the black matrix 202.

Alternatively, a photoresist type pigment dispersion liquid can also be used. At this time, a photoresist type pigment dispersion liquid is applied, and after prebaking, after exposure by a mask pattern, development is performed, and the colored layer is patterned. Then, the photoresist layer is peeled off, and the colored layer is baked to complete the black matrix 202.

The color filter 203 is formed by a pigment dispersion method, an electrodeposition method, a printing method, a dyeing method, or the like. In the case of the pigment dispersion method, a colored resin liquid in which a pigment (for example, red) is uniformly dispersed is applied onto the second substrate 200, and after baking curing, a photoresist is applied thereon to perform prebaking. After the photoresist is exposed by the mask pattern, development is performed and patterned. The photoresist layer is then stripped and the (red) color filter 203 is completed by baking. The order of coloring is not particularly limited. Similarly, a green color filter 203 and a blue color filter 203 are formed.

The transparent electrode 204 is provided on the color filter 203 (the overcoat layer (201) for surface flattening is provided on the color filter 203 as needed). The transparent electrode 204 preferably has a high transmittance, and preferably has a small resistance. The transparent electrode 204 is formed by oxygen such as ITO by sputtering or the like. Film.

Further, for the purpose of protecting the transparent electrode 204, a passivation film may be provided on the transparent electrode 204.

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

In the above, the above-mentioned back sheet and the front sheet used in the present invention are described in a specific aspect, but are not limited to the specific aspect in the present case, and the liquid crystal display element according to the desired aspect is freely available. change.

The shape of the columnar spacer is not particularly limited, and the horizontal cross section may have various shapes such as a circular shape, a polygonal shape such as a square shape, and the like, but it is preferable to consider a misalign margin during the process. To make the horizontal section a circular or regular polygon. 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 or a liquid crystal which is used for the sealing material or the sealing material, and is preferably a synthetic resin from the viewpoint of processing and weight reduction. Curable resin). On the other hand, the protrusions may be provided on the sealing material interface on the first substrate by a method of lithography or a droplet discharge method. For such reasons, it is preferred to use a photocurable resin suitable for lithography or a droplet discharge method.

As an example, the case where the columnar spacer is obtained by the lithography method will be described. Fig. 2 is a view showing a step of exposing a pattern using a columnar spacer formed on a black matrix as a mask pattern.

Coating the columnar space on the transparent electrode 204 of the front plate A resin liquid for forming a spacer (excluding a colorant). Next, the resin layer 402 is baked and hardened. The photoresist is coated thereon and pre-baked. After the photoresist is exposed by the mask pattern 401, development is performed to pattern the resin layer. Then, the photoresist layer is peeled off, and the resin layer is baked to complete the columnar spacer (302, 304 in Fig. 1).

The position at which the column spacers are formed can be positioned at a desired position by a mask pattern. Therefore, both the closed region of the liquid crystal display element and the outside of the closed region (the sealing material coating portion) can be simultaneously formed. Moreover, it is preferable to form a columnar spacer so that the quality of the closed region does not decrease, and it can be positioned above the black matrix. The column spacers thus produced by the lithography method are referred to as cylindrical spacers or photo spacers.

The material of the spacer is a mixture of a negative water-soluble resin such as a PVA-fluorene azo photosensitive resin or a polyfunctional acrylic monomer, an acrylic copolymer, or a triazole-based initiator. Alternatively, there is a method of using a color resin in which a coloring agent is dispersed in a polyimide resin. In the present invention, it is not particularly limited, and a spacer can be obtained from a well-known material depending on the liquid crystal to be used or the compatibility with the sealing material.

In this manner, after the columnar spacer is provided on the surface of the front plate which is the closed region, a sealing material (301 in FIG. 1) is applied to the sealing material contact surface of the back plate.

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

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

As a method of applying the sealing material, there is a printing method or a dispensing method, but it is preferable to use a dispensing method in which the amount of the sealing material used is small. The coating position of the sealing material is usually on a black matrix in order not to adversely affect the enclosed area. In order to form the liquid crystal dropping region of the next step (in such a manner that the liquid crystal does not leak), the sealing material coating shape is a closed loop shape.

The liquid crystal was dropped on the closed-loop shape (closed region) of the front plate coated with the aforementioned sealing material. A dispenser is usually used. The amount of liquid crystal dropped is the same as the volume of the liquid crystal cell, and is substantially the same as the volume by which the height of the column spacer and the sealed coating area are multiplied. However, in order to optimize liquid crystal leakage or display characteristics in the cell bonding step, the amount of liquid crystal dropped may be appropriately adjusted, and the liquid crystal dropping position may be dispersed.

Next, the sealing material is applied, and the back sheet is bonded to the front plate on which the liquid crystal has been dropped. Specifically, the front plate and the back plate are adsorbed by a stage having a mechanism for adsorbing the substrate such as an electrostatic chuck, and the second alignment film of the front plate faces the first alignment film of the back plate, and is disposed between the sealing material and the other The position (distance) at which the side substrates do not meet. In this state, the internal pressure is reduced. Less After the end of the pressing, the position of the two substrates (alignment operation) is adjusted while confirming the bonding position between the front plate and the back plate. If the adjustment of the bonding position is completed, the substrate is brought close to the position where the sealing material on the front plate is in contact with the backing plate. In this state, the inert gas is filled in the system, and the pressure is returned to the normal pressure while gradually opening the pressure. At this time, the front plate and the back plate are bonded together by atmospheric pressure, and a cell gap is formed at the height position of the column spacer. In this state, the sealing material is irradiated with ultraviolet rays to cure the sealing material to form a liquid crystal cell. Then, depending on the case, a heating step is applied to promote hardening of the sealing material. In order to enhance the adhesion of the sealing material or to improve the reliability of the electrical characteristics, a heating step is applied.

[Examples]

The invention is illustrated in more detail below by the examples, but the invention is not limited by the examples. In addition, "%" in the composition of the following examples and comparative examples means "% by mass" unless otherwise specified.

In the examples, the measured characteristics are as follows.

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

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

△ ε: dielectric anisotropy at 298K

η: viscosity at 293K (mPa.s)

Γ1: Rotational viscosity at 298 K (mPa.s)

VHR: Voltage holding ratio at 333K at a frequency of 60 Hz and a voltage of 5 V (%)

VHR after heat resistance test: electricity to be sealed with a liquid crystal composition sample The gas optical property evaluation was carried out by using TEG (Test-Element-Group) in a thermostat at 130 ° C for 1 hour, and then measured under the same conditions as the above VHR measurement method.

Afterimage:

The image sticking evaluation of the liquid crystal display element is a test time before the residual image of the fixed pattern reaches an unacceptable afterimage level when the specified fixed pattern is displayed for an arbitrary test time in the display area and the full screen uniform display is performed.

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

(2) The degree of residual image that cannot be tolerated is the degree of unacceptable afterimage observed by the pass or fail.

Drop the trace:

The evaluation of the dripping marks of the liquid crystal display device was carried out by visual evaluation of the dropping marks which were visually observed in the case of full black display, and was evaluated by the following five levels.

5: no traces of dripping (excellent)

4: There are very few traces of dripping, but it is also tolerable (good)

3: There are traces of dripping, the degree of boundary of the pass or fail judgment (with conditions)

2: There are traces of dripping, the degree of unacceptable (not available)

1: There are traces of dripping, quite bad (poor)

Process suitability:

The process suitability is in the ODF process. The fixed volume metering pump is used to drop the liquid crystal at 50pL every time, in "0~100 times, 101~200 times, 201~300". Times. . . . When each of the 100 drops was dropped, the mass of the liquid crystal of each of the 100 drops was measured, and the difference in mass was evaluated by the number of drops that could not be adapted to the ODF process.

The more the number of drops, the more it can be dripped for a long time, and it can be said that the process suitability is high.

Solubility at low temperatures:

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

The longer the test time, the longer the liquid crystal phase is stably maintained, and the solubility at low temperatures is good.

Volatile/manufacturing device contamination:

The volatility evaluation of the liquid crystal material was carried out by observing the operation state of the vacuum stirring defoaming mixer using a stroboscope, and visually observing the foaming of the liquid crystal material. Specifically, the capacity of the vacuum container for dedicated off 2.0L stirred mixer of the bubble in the liquid crystal composition was added 0.8kg, degassed under 4kPa, the revolution speed at 15S ^-1, the rotation speed of operation of the vacuum to 7.5S ^-1 The defoaming mixer was stirred and the time before the start of foaming was measured.

The longer the time before the start of foaming, the more difficult it is to volatilize, and the possibility of contamination of the manufacturing apparatus is low, indicating high performance.

(Examples 1 and 2 and Comparative Example 1)

The composition shown in Table 1 was prepared by using the compound shown below, and an IPS type liquid crystal display device having the structure shown in Figs. 1 and 2 was produced. Table 2 shows the results of evaluation of the obtained composition and liquid crystal display device.

The compositions prepared in Examples 1 and 2 were compared with Comparative Example 1. Compared with the composition to be prepared, ΔN and Δε were large, and the low-temperature solubility was remarkably excellent, and the evaluation of the dripping marks was excellent, and the afterimage was suppressed.

(Examples 3 to 6)

The composition shown in Table 3 was prepared by using the compound shown below, and an IPS type liquid crystal display device having the structure shown in Fig. 1 and Fig. 2 was produced. Table 4 shows the results of evaluation of the obtained composition and liquid crystal display device.

(Examples 7 to 10)

The composition shown in Table 5 was prepared by using the compound shown below, and an IPS type liquid crystal display device having the structure shown in Fig. 1 and Fig. 2 was produced. Table 6 shows the results of evaluation of the obtained composition and liquid crystal display device.

(Examples 11 to 14)

The composition shown in Table 7 was prepared by using the compound shown below, and an IPS type liquid crystal display device having the structure shown in Fig. 1 and Fig. 2 was produced. Table 8 shows the results of evaluation of the obtained composition and liquid crystal display device.

(Examples 15 to 18)

The composition shown in Table 9 was prepared by using the compound shown below, and an IPS type liquid crystal display device having the structure shown in Fig. 1 and Fig. 2 was produced. Table 10 shows the results of evaluation of the obtained composition and liquid crystal display device.

(Examples 19 to 22)

The composition shown in Table 11 was prepared by using the compound shown below, and an IPS type liquid crystal display device having the structure shown in Fig. 1 and Fig. 2 was produced. Table 12 shows the results of evaluation of the obtained composition and liquid crystal display device.

(Examples 23 to 26)

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

(Examples 27 to 30)

The composition shown in Table 15 was prepared by using the compound shown below, and an IPS type liquid crystal display device having the structure shown in Fig. 1 and Fig. 2 was produced. Table 16 shows the results of evaluation of the obtained composition and liquid crystal display device.

(Examples 31 to 34)

The composition shown in Table 17 was prepared by using the compound shown below, and an IPS type liquid crystal display device having the structure shown in Fig. 1 and Fig. 2 was produced. Table 18 shows the results of evaluation of the obtained composition and liquid crystal display device.

(Examples 35 to 38)

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

(Examples 39 to 42)

The composition shown in Table 21 was prepared by using the compound shown below, and an IPS type liquid crystal display device having the structure shown in Fig. 1 and Fig. 2 was produced. Table 22 shows the results of evaluation of the obtained composition and liquid crystal display device.

(Examples 43 to 46)

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

Liquid crystal having positive dielectric anisotropy of the present invention The composition is excellent in solubility at low temperatures, and the specific resistance or voltage holding ratio is extremely small due to heat or light. Therefore, the product has high practicability, and the liquid crystal display element including the same can achieve high-speed reaction. Further, in the liquid crystal display device process, since the liquid crystal composition can be stably dripped, and display defects caused by the process can be suppressed, and it can be manufactured with high yield, it is very useful.

[Industrial availability]

The liquid crystal composition having positive dielectric anisotropy of the present invention has good solubility at low temperatures, and the specific resistance or voltage holding ratio is extremely small due to heat or light, so that the product has high practicability and contains The liquid crystal display element achieves a high speed response. Further, in the liquid crystal display device process, since the liquid crystal composition can be stably dripped, and display defects caused by the process can be suppressed, and it can be manufactured with high yield, it is very useful.

Claims (14)

A liquid crystal composition containing at least one compound represented by the formula (i), at least one compound represented by the formula (ii), a compound represented by the formula (X-6), and a liquid crystal composition The total mass is 43 to 70% by mass of at least one compound selected from the group of compounds represented by the general formula (I-1), and is 15 to 35% by mass based on the total mass of the liquid crystal composition. At least one compound selected from the group consisting of compounds represented by the formula (II-2), wherein the compound represented by the formula (1.3) is contained as an essential compound. ^Wherein R ⁱ¹ represents an alkyl group having 2 to 5 carbon atoms; In the formula, R ⁱⁱ¹ and R ⁱⁱ² each independently represent an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and any of X ⁱⁱ¹ and X ⁱⁱ² represents a hydrogen atom, and the other represents fluorine. atom; In the 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; In the 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; R ²³ represents an alkenyl group having 2 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 liquid crystal composition of claim 1, which contains at least one compound represented by the general formula (L), In the 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 two or more non-adjacent-CH ₂ - groups may independently be -CH=CH -, -C≡C-, -O-, -CO-, -COO- or -OCO-substituted, OL represents 0, 1, 2 or 3, and B ^L1 , B ^L2 and B ^L3 are each independently selected from the group consisting of The group in the group consisting of: (a) 1,4-cyclohexylene, one -CH ₂ - or two or more -CH ₂ - which are not adjacent to this group may be substituted by -O- And (b) 1,4-phenylene, one -CH= or two or more non-contiguous -CH= may be substituted by -N=, the above-mentioned group (a), b) each independently substituted by 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-, When 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 plural, they may be the same or different, but by formula (ii) a compound selected from the group shown by the group represented by the general formula (I-1) The compound and the compound selected from the group represented by the formula (II-2) are excluded. A liquid crystal composition according to claim 1 or 2, which contains at least one compound represented by the formula (M), In the formula, R ^M1 represents an alkyl group having 1 to 8 carbon atoms, and one of the alkyl groups or two or more non-adjacent -CH ₂ - groups may independently be -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 consisting of (d) 1,4-cyclohexylene, one -CH ₂ - or two or more -CH ₂ - which are not adjacent to this group may be substituted by -O- or -S-; e) 1,4-phenylene group, one -CH= or two or more non-contiguous -CH= which may be present in this group may be substituted by -N=, and each of the above-mentioned groups (d) and (e) Independently substituted by a cyano group, a fluorine atom or a chlorine atom, 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-, when PM is 2, 3 or 4 and K ^M1 is plural, they may be the same or different When PM is 2, 3 or 4 and the C ^M2 system is present in plural, they may be the same or different, and X ^M1 and X ^M3 each independently represent a hydrogen atom, a chlorine atom or a fluorine atom, and X ^M2 represents a hydrogen atom and fluorine. Atom, chlorine atom, cyano group, trifluoromethyl group, fluorine Methoxy, difluoromethoxy, trifluoromethoxy or 2,2,2-trifluoroethyl; except for the compound of the formula (i) and the compound of the formula (X-6) . The liquid crystal composition according to claim 1, wherein at least one compound represented by the formula (IV-1) is contained as a compound represented by the formula (ii). In the formula, R ⁴³ and R ⁴⁴ each independently represent an alkyl group having 1 to 5 carbon atoms. The liquid crystal composition according to claim 1, wherein the compound represented by the formula (IV-2) is contained as the compound represented by the formula (ii). In the formula, 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 an alkenyl group having 2 to 5 carbon atoms, X ⁴¹ , Any one of X ⁴² represents a hydrogen atom, and the other represents a fluorine atom. The liquid crystal composition of claim 1, wherein at least one of compounds represented by formulas (44.1) and (44.2) of 0.5% or more and less than 5% is used as the formula (X-6) Compound shown, A liquid crystal display element for active matrix driving, which uses the liquid crystal composition according to any one of claims 1 to 6. For example, the active matrix driving liquid crystal display element of claim 7 is IPS mode. For example, the active matrix driving liquid crystal display device of claim 7 has an operation mode of VA-IPS. The active matrix driving liquid crystal display device of claim 7 is characterized in that the operation mode is the FFS mode. The active matrix driving liquid crystal display device of claim 7 is characterized in that the operation mode is the ECB method. For example, the liquid crystal display element for active matrix driving according to item 7 of the patent application has an operation mode of OCB. The active matrix driving liquid crystal display device of claim 7 is characterized in that the operation mode is the VA mode. A liquid crystal display using the active matrix driving liquid crystal display element according to any one of claims 7 to 13.