TW201437333A - Liquid crystal composition, and liquid crystal display element using the same - Google Patents

Abstract

One of the objects of the present invention is to provide a liquid crystal composition which has a positive Δ ε , a wide liquid crystal range, excellent solubility at low temperatures, excellent ODF-process-compatibility, and a high specific resistance and voltage holding ratio, and is stable to heat and light, and the present invention provides a liquid crystal composition containing a compound represented by the following formula (i) and a compound represented by the following formula (ii). in the formula (i), Ri1 represents a C1-5 alkyl group, or a C2-5 alkenyl group.

Description

Liquid crystal composition and liquid crystal display element using same

The present invention relates to a nematic liquid crystal composition having a positive dielectric anisotropy (Δε) as a liquid crystal display material and a liquid crystal display element using the same.

Headsets and computers are used, and liquid crystal display elements have been used in various measuring machines, automotive panels, word processors, electronic notebooks, printers, computers, televisions, clocks, advertising displays, and the like. The representative of the liquid crystal display method is TN (twisted nematic) type, STN (supper twisted nematic) type, and TFT (film transistor). Vertical alignment type or IPS (in-plane switching) type. The liquid crystal composition used for these liquid crystal display elements is stable to external stimuli such as moisture, air, heat, light, etc., and is intended to display a liquid crystal phase at a temperature range as wide as possible centering on a room temperature. It is low viscosity and the driving voltage is low. Further, in order to make dielectric anisotropy (Δε) and/or refractive index anisotropy (Δn) and the like suitable for each display element, liquid crystal compositions are composed of several types to tens of types of compounds. Things.

A liquid crystal composition having a negative Δε is used in a vertical alignment (VA) type display, and Δε is used in a horizontal alignment type display such as a TN type, an STN type, or an IPS (in-plane switching type). Positive liquid crystal composition. Further, the liquid crystal composition having positive Δ ε is vertically aligned when no voltage is applied, and the driving mode displayed when a transverse electric field is applied is also reported, and the necessity of a liquid crystal composition having positive Δ ε is further improved. . On the other hand, in all driving methods, low-voltage driving, high-speed reaction, and a wide operating temperature range are being sought. That is, 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 required. Further, 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 synergistic cell gap of the liquid crystal composition to an appropriate range. Further, when a liquid crystal display element is applied to a television or the like, since a high-speed reactivity is emphasized, a liquid crystal composition having a small rotational viscosity (γ ₁ ) is required.

In the composition 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) in which a liquid crystal compound having a positive Δ ε is combined, and Δ ε have been disclosed. A liquid crystal composition used as (B) of a neutral liquid crystal compound. In view of the characteristics of the 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 negative Δ ε has an alkenyl group, and is widely known in the field of liquid crystal compositions (Patent Literature) 1~4).

On the other hand, the use of the liquid crystal display element has been expanded, and the method of use and the method of manufacture have also seen great changes. In order to cope with such changes, it has been requested to optimize characteristics other than the basic physical property values known as the conventional ones. 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 the size thereof is also practically used in a display device of a very large size of 50 or more. With the increase in the size of the substrate, the method of injecting the liquid crystal composition into the substrate is also the mainstream of the injection method from the conventional vacuum injection method to the ODF (One Drop Fill) method. However, the problem that the dripping trace of the liquid crystal composition is dropped onto the substrate causes the display quality to deteriorate and the surface is floated.

Further, regarding the manufacturing step of the liquid crystal display element by the ODF method, it is necessary to drip the optimum liquid crystal injection amount in accordance with the size of the liquid crystal display element. When the deviation of the injection amount is largely deviated from the optimum value, the balance of the refractive index or the driving electric field of the liquid crystal display element designed in advance may be collapsed, and display defects such as spot occurrence or poor contrast may occur. In particular, most of the small liquid crystal display elements used in recent popular smart phones, in order to The most suitable liquid crystal injection amount is small, and it is difficult to control the deviation of the optimum value within a certain range. Therefore, in order to maintain the high yield of the liquid crystal display element, the liquid crystal composition is required to have a small influence on the rapid pressure change or the pulsation in the dropping device generated when the liquid crystal is dropped, and the liquid crystal can be continuously dripped over a long period of time. .

In the liquid crystal composition used in the active matrix driving liquid crystal display device driven by the TFT element or the like, in consideration of the manufacturing method of the liquid crystal display element, the high-speed reaction performance and high ratio demanded by the liquid crystal display element are being pursued. Development of resistance values, high voltage holding ratios, or improvements in external stimuli such as 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 Δ ε, which has a liquid crystal phase in a wide temperature range, low viscosity, good solubility at low temperatures, high specific resistance or voltage retention, and heat or light. Further, a liquid crystal display element which exhibits an excellent display quality which suppresses image sticking or display defects due to dripping marks, etc., and a liquid crystal display using the liquid crystal composition are provided with good stability. element.

The present invention encompasses the following aspects.

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

(wherein R ^{i1 is} represented by an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms).

(2) The liquid crystal composition according to (1), which contains one or more types of compounds 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 - groups 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 composition selected from the group consisting of Group of groups: (a) 1,4-cyclohexylene (one of which is present in this group -CH ₂ - or two or more of which are not adjacent -CH ₂ - may be substituted with -O-) and b) 1,4-phenylene (one of which is present in the group -CH= or two or more non-contiguous -CH= may be substituted with -N=), the above-mentioned group (a), group ( 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-, OL is 2 or 3 and L ^L2 is a plurality of cases, and they may be the same or different, OL is 2 or 3 and B ^L3 is a plurality of cases, and they may be the same or different. Except for the compounds represented by formula (ii).

(3) The liquid crystal composition according to (1) or (2), which contains at least one compound represented by the following 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 - groups may be independently -CH=CH-, -C≡C -, -O-, -CO-, -COO- or -OCO-substitution, PM represents 0, 1, 2, 3 or 4, and C ^M1 and C ^M2 each independently represent a group selected from the group consisting of: ( d) 1,4-cyclohexylene (one of -CH ₂ - or two or more of -CH ₂ - not adjacent to this group may be substituted with -O- or -S-), and (e 1,4-phenylene (one of -CH= or two or more non-contiguous -CH= may be substituted by -N=), the above-mentioned base (d), base (e Each of them 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-, PM is 2, 3 or 4 and K ^M1 is a plurality of cases, they may be the same Alternatively, PM is 2, 3 or 4 and C ^M2 is a plurality of cases, and 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, fluoromethoxy, difluoromethoxy, trifluoromethoxy or 2,2,2-trifluoroethyl; but excluding compounds of formula (i) represents).

(4) The liquid crystal composition according to (3), which contains a compound represented by the formula (X-2-1) which is a compound represented by the formula (M), (wherein 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 (2), which contains a compound represented by the formula (L), which is a compound selected from the group consisting of the compounds 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 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms).

(6) The liquid crystal composition according to (2), which contains a compound represented by the following formula (IV) as a compound represented by the formula (L), (wherein R ⁴¹ and R ⁴² each independently represent an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and X ⁴¹ and X ⁴² each independently represent a hydrogen atom or a fluorine atom).

(7) The liquid crystal composition according to (3), which contains a compound represented by the following formula (IX-2-2) as a compound represented by the formula (M), (wherein R ⁹ represents an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms).

(8) The liquid crystal composition according to the above (2), which contains a compound represented by the formula (L) and is a compound selected from the group consisting of the compounds represented by the following formula (I-7). (wherein R ¹¹ and R ¹² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and X ¹² represents a fluorine atom or chlorine. atom).

(9) The liquid crystal composition according to (2), which contains a compound represented by the formula (L) and is a compound selected from the group consisting of the compounds represented by the following formula (II-1). (R ²¹ and R ²² each independently represent an alkenyl group having 2 to 5 carbon atoms or an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms).

(10) The liquid crystal composition according to (3), which contains a compound represented by the following formula (IX-1) as a compound represented by the formula (M), (wherein R ⁹ represents an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, X ⁹² represents a hydrogen atom or a fluorine atom, and Y ⁹ represents a fluorine atom or -OCF ₃ ).

(11) The liquid crystal composition according to (3), which contains a compound represented by the following formula (XIV-2-2) as a compound represented by the formula (M), (wherein R ¹⁴ represents an alkyl group having 2 to 7 carbon atoms).

(12) The liquid crystal composition according to (3), which contains a compound represented by the following formula (X-4) which is a compound represented by the formula (M), (wherein 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 alkoxy group having 1 to 4 carbon atoms).

(13) The liquid crystal composition according to (3), which contains a compound represented by the following formula (X-1-3), which is a compound represented by the formula (M), (wherein 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).

(14) The liquid crystal composition according to (4), which contains a compound represented by the following formula (39.2), which is a compound represented by the formula (X-2-1),

(15) The liquid crystal composition according to (5), which contains a compound represented by the following formula (5.2), which is a compound represented by the formula (I-4),

(16) The liquid crystal composition according to (6), which contains a compound represented by the formula (18.3) which is a compound represented by the formula (IV),

(17) The liquid crystal composition according to (7), which contains a compound represented by the formula (31.4) which is a compound represented by the formula (IX-2-2),

(18) The liquid crystal composition according to (8), which contains the compound represented by the formula (8.1) which is a compound represented by the formula (I-7),

(19) The liquid crystal composition according to (9), which contains a compound represented by the formula (10.1) which is a compound represented by the formula (II-1),

(20) The liquid crystal composition according to (10), which contains a compound represented by the formula (28.5) which is a compound represented by the formula (IX-1),

(21) The liquid crystal composition according to (11), which contains a compound represented by the formula (54.1) and/or formula (54.4) which is a compound represented by the formula (XIV-2-2),

(22) The liquid crystal composition according to (12), which contains a compound represented by the formula (42.3) which is a compound represented by the formula (X-4),

(23) The liquid crystal composition according to (13), which contains a compound represented by the formula (38.2) which is a compound represented by the formula (X-1-3),

(24) The liquid crystal composition according to (2), which contains 14% or more of the compound represented by the formula (I-1-1) which is a compound represented by the formula (L), (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 4 carbon atoms).

(25) The liquid crystal composition according to (2), which contains a compound represented by the formula (II-2) which is a compound represented by the formula (L), (wherein 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).

(26) The liquid crystal composition according to (25), which contains 9% or more of the compound represented by the formula (11.2) which is a compound represented by the formula (II-2),

(27) The liquid crystal composition according to (10), which contains 15% or more of the compound represented by the formula (28.3) which is a compound represented by the formula (IX-1),

(28) A liquid crystal composition according to claim 3, which comprises a compound represented by the formula (VIII-1) which is a compound represented by the formula (M), (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).

(29) The liquid crystal composition according to (28), which contains 3% or more of the compound represented by the formula (26.1) which is a compound represented by the formula (M),

(30) The liquid crystal composition according to (6), which contains 7% or more of the compound represented by the formula (18.4) and/or the formula (18.5), which is a compound represented by the formula (IV),

(31) The liquid crystal composition according to (2), which contains, as a compound represented by the formula (L), a compound selected from the group consisting of the compounds represented by the formula (III), (R ³¹ and R ³² each independently represent an alkenyl group having 2 to 5 carbon atoms or an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms).

(32) The liquid crystal composition according to (6), which contains 0.5% or more and less than 5% of the compound represented by the formula (19.1) and/or the formula (19.2) as the compound represented by the formula (IV). ,

(33) The liquid crystal composition according to (11), which contains a compound represented by the formula (54.2) which is a compound represented by the formula (XIV-2-2), and which is 5% or more,

(34) The liquid crystal composition according to (6), which contains a compound represented by the formula (19.3) and/or the formula (19.4) which is a compound represented by the formula (IV),

(35) The liquid crystal composition according to (6), which is represented by the following formula (19.31) and/or (19.32) which is 0.5% or more and less than 5% of the compound represented by the formula (IV). Compound,

(36) The liquid crystal composition according to (3), which contains 0.5% or more and less than 2% of the compound represented by the formula (41.2) which is a compound represented by the formula (M),

(37) A liquid crystal display element for active matrix driving, which uses the liquid crystal composition according to any one of the above (1) to (36).

(38) The liquid crystal display element for active matrix driving according to (37), wherein the operation mode is the IPS method.

(39) The liquid crystal display element for driving an active matrix according to (37), wherein the operation mode is the FFS method.

(40) The liquid crystal display element for driving an active matrix according to (37), wherein The action mode is VA-IPS mode.

(41) The liquid crystal display element for active matrix driving according to (37), wherein the operation mode is the OCB method.

(42) The liquid crystal display element for active matrix driving according to (37), wherein the operation mode is the ECB method.

(43) A liquid crystal display using the active matrix liquid crystal display element as described in (37) to (42).

The composition having positive dielectric anisotropy of the present invention maintains low viscosity, high specific resistance, and high voltage holding ratio, and the solubility in a relatively low temperature is remarkably improved, and the liquid crystal is passed through the ODF method. It is possible to continue the drip that has been stabilized over a long period of time in the manufacturing process of the display component. Therefore, the composition of the present invention can produce a liquid crystal display element which exhibits excellent display quality due to a display defect caused by a manufacturing process, and has high practicability (applicability) to a liquid crystal product, and uses IPS ( A liquid crystal display element such as an in-plane 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 film

105‧‧‧1st alignment film

200‧‧‧2nd substrate

201‧‧‧flat film

202‧‧‧Black matrix

203‧‧‧Color filters

203a‧‧‧Color Filters

203b‧‧‧Color Filters

203c‧‧‧Color Filter

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 "backplane", and a substrate having 200 to 205 is referred to as a "frontplane".

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

[Formation of the Invention]

The liquid crystal composition of the present invention contains at least one compound represented by the following formula (i) and a compound represented by the formula (ii). Hereinafter, the description of the liquid crystal composition will be made. However, unless otherwise specified, "%" means "% by mass".

(wherein R ⁱ¹ represents an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms).

<Compound represented by the formula (i)>

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

In the above formula (i), R ⁱ¹ represents an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms.

The content of the compound represented by the above formula (i) is preferably 1% by mass or more and 30% by mass or less based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. good 2% by mass or more and 25% by mass or less is more preferably 2% by mass or more and 22% by mass or less is more preferably. 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, 2~ 8% by mass is preferred, 2 to 5% by mass is preferred, 2 to 4% by mass is preferred, 4 to 22% by mass is preferred, 5 to 22% by mass is preferred, and 10 to 22% by mass is preferred. Preferably, 14 to 22% by mass is preferred, 20 to 22% by mass is preferred, 4 to 5% by mass is preferred, 5 to 8% by mass is preferred, and 10 to 12% by mass is preferred, and 14 to 20% by mass is preferred. The mass % is preferred.

Further, the compound represented by the formula (i) used in the liquid crystal composition of the present invention is specifically selected from at least one compound selected from the group consisting of compounds represented by the formulas (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 it is more preferable to contain 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 1% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. The above 25% by mass or less is preferable, 2% by mass or more and 20% by mass or less is more preferable, and 2% by mass or more and 15% by mass or less is more preferably 2% by mass or more and 11% 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% by mass or more can be exemplified. It is 5% 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 1% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. The above 20% by mass or less is preferable, and 1% by mass or more and 15% by mass or less is more preferable, and 1% by mass or more and 10% by mass or less is more 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% by mass or more and 4 masses can be exemplified. % 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 1% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. The above 20% by mass or less is preferable, and 1% by mass or more and 15% by mass or less is more preferable, and 1% by mass or more and 10% by mass or less is more preferably 2% by mass or more. 10% by mass or less is particularly preferred. 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 and 7% by mass or less, 2% by mass or more, 6% by mass or less, and 5% by mass or more can be exemplified. Below mass%.

The compound which can be combined with the compound represented by the above formula (i) is not limited, but it can be appropriately combined in 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 combined, and in still other embodiments, three types or more are combined.

For example, when the liquid crystal composition of the present invention contains one type of the compound represented by the formula (i), it is preferred to contain the compound shown below.

(wherein 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 formula (X-2-1) is preferably from 1 to 10% based on the total mass of the liquid crystal composition of the present invention.

Among the compounds represented by the formula (X-2-1), a compound represented by the following formula (39.2) is preferred.

The content of the compound represented by the formula (39.2) is preferably from 1 to 10%, more preferably from 1 to 8%, more preferably from 3 to 7%, and particularly preferably from 5 to 7%.

(wherein 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).

The content of the compound represented by the formula (I-4) is preferably from 1 to 21% based on the total mass of the liquid crystal composition of the present invention.

Among the compounds represented by the formula (I-4), a compound represented by the following formula (5.2) is preferred.

The content of the compound represented by the formula (5.2) is preferably 5 to 20%, more preferably 10 to 15%, and still more preferably 11 to 13%.

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

The content of the compound represented by the formula (IV) is preferably from 1 to 16% based on the total mass of the liquid crystal composition of the present invention.

Among the compounds represented by the formula (IV), those selected from the following formulae (18.3) to (18.5), (19.1) to (19.4), (19.31) and (19.32) are preferred.

The content of the compound represented by the formula (19.32) or the formula (19.31) is preferably from 1 to 5%, more preferably from 1 to 3%.

The content of the compound represented by the formula (18.4) or the formula (18.5) is preferably 7 to 15%, more preferably 9 to 11%.

The content of the compound represented by the formula (18.3) is preferably from 1 to 15%, more preferably from 1 to 10%, more preferably from 5 to 10%, and particularly preferably from 6 to 9%.

(wherein R ⁹ represents an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms).

The content of the compound represented by the formula (IX-2-2) is preferably from 1 to 12% based on the total mass of the liquid crystal composition of the present invention.

Among the compounds represented by the formula (IX-2-2), a compound represented by the following formula (31.4) is preferred.

The content of the compound represented by the formula (31.4) is preferably from 1 to 7%, more preferably from 2 to 5%, based on the total mass of the liquid crystal composition of the present invention.

(wherein R ¹¹ and R ¹² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and X ¹² represents a fluorine atom or chlorine. atom).

The content of the compound represented by the formula (I-7) is preferably from 1 to 7%, more preferably from 1 to 4%, based on the total mass of the liquid crystal composition of the present invention.

Among the compounds represented by the formula (I-7), a compound represented by the following formula (8.1) is preferred.

(R ²¹ and R ²² each independently represent an alkenyl group having 2 to 5 carbon atoms or an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms).

The content of the compound represented by the formula (II-1) is preferably from 1 to 16%, more preferably from 3 to 10%, based on the total mass of the liquid crystal composition of the present invention.

Among the compounds represented by the formula (II-1), a compound represented by the following formula (10.1) is preferred.

The content of the compound represented by the formula (10.1) is preferably from 1 to 15%, more preferably from 5 to 15%, more preferably from 5 to 10%, and particularly preferably from 7 to 9%.

(wherein R ⁹ represents an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, X ⁹² represents a hydrogen atom or a fluorine atom, and Y ⁹ represents a fluorine atom or -OCF ₃ ).

The content of the compound represented by the formula (IX-1) is preferably from 1 to 21% based on the total mass of the liquid crystal composition of the present invention.

Among the compounds represented by the formula (IX-1), a compound represented by the following formula (28.3) or (28.5) is preferred.

The content of the compound represented by the formula (28.3) is preferably from 1 to 20%, more preferably from 8 to 20%, more preferably from 15 to 20%, and particularly preferably from 17 to 20%.

The content of the compound represented by the formula (28.5) is preferably from 1 to 20%, more preferably from 1 to 15%, more preferably from 1 to 10%, and particularly preferably from 2 to 5%.

(wherein R ¹⁴ represents an alkyl group having 2 to 7 carbon atoms).

The content of the compound represented by the formula (XIV-2-2) is preferably from 1 to 20%, more preferably from 2 to 17%.

Among the compounds represented by the formula (XIV-2-2), a compound represented by the following formula (54.1), (54.2) or (54.4) is preferred.

The content of the compound represented by the formula (54.1) is preferably 1 to 15%, more preferably 1 to 10%, still more preferably 1 to 5%, and particularly preferably 1 to 3%.

The content of the compound represented by the formula (54.2) is preferably 5 to 20%, more preferably 5 to 16%.

The content of the compound represented by the formula (54.4) is preferably from 1 to 15%, more preferably from 1 to 10%, still more preferably from 3 to 8%.

(wherein 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 alkoxy group having 1 to 4 carbon atoms).

The content of the compound represented by the formula (X-4) is preferably from 1 to 10%, more preferably from 2 to 5%.

Among the compounds represented by the formula (X-4), a compound represented by the following formula (42.3) is preferred.

The content of the compound represented by the formula (42.3) is preferably from 1 to 10%, more preferably from 1 to 5%, still more preferably from 2 to 4%.

(wherein 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 formula (X-1-3) is preferably from 1 to 10%, more preferably from 1 to 7%, still more preferably from 3 to 7%.

Among the compounds represented by the formula (X-1-3), a compound represented by the following formula (38.2) is preferred.

The content of the compound represented by the formula (38.2) is preferably from 1 to 10%, more preferably from 1 to 7%, still more preferably from 3 to 7%.

(wherein R ¹² each independently 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 formula (I-1-1) is preferably 14% or more, preferably 14 to 25%, more preferably 14 to 18%.

Among the compounds represented by the formula (I-1-1), the following formula (1.3) The compound represented is preferred.

The content of the compound represented by the formula (1.3) is preferably 14% or more, preferably 14 to 25%, more preferably 14 to 18%.

Further, in the case where the liquid crystal composition of the present invention contains one type of the compound represented by the formula (i), it is preferred to contain the compound shown below.

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

The content of the compound represented by the formula (11.2) is preferably 5 to 20%, more preferably 6 to 20%, more preferably 8 to 20%, more preferably 9 to 20%, and more preferably 10 to 18%. good.

The content of the compound represented by the formula (III) is preferably 5 to 15%, more preferably 6 to 15%, more preferably 7 to 15%, still more preferably 9 to 15%.

The content of the compound represented by the formula (26.1) is preferably from 1 to 20%, more preferably from 2 to 15.5%, more preferably from 3 to 15%, more preferably from 4 to 10%, and from 5 to 10%. Better.

The total content of the compound of the formula (i) and the compound represented by the formula (ii) is preferably from 25 to 60%, more preferably from 30 to 55%.

One type of compound represented by the formula (i), a compound represented by the formula (ii), two kinds of compounds represented by the formula (XIV-2-2), and one represented by the formula (IV-1) The total content of the compound of the kind and the compound of the one type represented by the formula (III) is preferably 50 to 80%, more preferably 60 to 80%, still more preferably 70 to 80%, and 75 to 79%. It is especially good.

One type of compound represented by the formula (i), a compound represented by the formula (ii), one type of compound represented by the formula (X-4), and one represented by the formula (X-2-1) The total content of the compound of the type, the compound of the one type represented by the formula (IV-1), and the compound of the one type represented by the formula (III) is preferably 50 to 80%, more preferably 60 to 80%. Good, 70~80% is better, 73~77% is especially good.

The total content of the compound of the formula (i), the compound represented by the formula (ii), and the compound represented by the formula (11.2) is preferably 20 to 60%, more preferably 30 to 60%. 40~50% is better and 43~47% is especially good.

One type of compound represented by the formula (i), a compound represented by the formula (ii), a compound represented by the formula (39.2), a compound represented by the formula (26.1), a compound represented by the formula (18.4), and a formula The total content of the compound represented by the formula (10.1), the compound represented by the formula (5.2), and the compound represented by the formula (1.3) is preferably 70 to 100%, more preferably 80 to 100%, and 85 to 95%. For better, 90~95% is especially good.

One type of compound represented by the formula (i), a compound represented by the formula (ii), a compound represented by the formula (39.2), a compound represented by the formula (26.1), a compound represented by the formula (18.4), and a formula The total content of the compound represented by the formula (5.2) and the compound represented by the formula (1.3) is preferably 60 to 90%. 70~90% is better, 80~90% is better, and 82~86% is especially good.

One type of compound represented by the formula (i), a compound represented by the formula (ii), a compound represented by the formula (39.2), a compound represented by the formula (38.2), and a compound represented by the formula (1.3) The total content is preferably 50 to 90%, 60 to 80% is better, 70 to 80% is better, and 70 to 75% is particularly good.

One type of compound represented by the formula (i), a compound represented by the formula (ii), a compound of two types represented by the formula (XIV-2-2), a compound represented by the formula (41.2), and a formula The total content of the compounds represented by (28.5) is preferably 30 to 70%, more preferably 40 to 60%, more preferably 45 to 55%, and particularly preferably 49 to 52%.

The total content of the compound represented by the formula (i), the compound represented by the formula (ii), and the compound represented by the formula (19.31) and/or the formula (19.32) is preferably from 35 to 75%. 45~65% is better, 50~60% is better, and 55~60% is especially good.

Further, in the case where the liquid crystal composition of the present invention contains two kinds of compounds represented by the formula (i), it is preferred to contain at least one compound selected from the group consisting of the following.

When the liquid crystal composition of the present invention contains two kinds of the compound represented by the formula (i) and the compound represented by the formula (44.2), the content represented by the formula (44.2) is preferably from 1 to 15%, preferably 3~ 10% is better, and 4~8% is better.

When the liquid crystal composition of the present invention contains two kinds of the compound represented by the formula (i) and the compound represented by the formula (44.1), the content represented by the formula (44.1) is preferably from 1 to 15%, and 2~ 10% is better, and 3~7% is better.

When the liquid crystal composition of the present invention contains two kinds of compounds represented by the general formula (i), the compound represented by the formula (44.1) and the compound represented by the formula (44.2) are preferably used, and the total content thereof is 5 ~15% is better , 7~12% is better.

The content of the compound represented by the formula (19.1) or the formula (19.2) is preferably 0.5 to 10%, more preferably 0.5% to 5%, more preferably 0.5 to 2%.

The liquid crystal composition of the present invention contains the compound represented by the formula (i), the compound represented by the formula (19.3), and/or the compound represented by the formula (19.4), and the formula (19.3) and/or the formula The content of the compound represented by (19.4) is preferably from 1 to 20%, more preferably from 5% to 15%, still more preferably from 10 to 15%.

In the case where the liquid crystal composition of the present invention contains two kinds of compounds represented by the formula (i) and the compound represented by the formula (31.4), the content represented by the formula (31.4) is preferably from 1 to 15%, preferably 1 to 15%. 10% is better, and 1~4% is better.

Further, in the case where the liquid crystal composition of the present invention contains two kinds of compounds represented by the general formula (i) and contains the compound represented by the general formula (ii), the content of the compound represented by the general formula (i) is in the present invention. In the total amount of 100% by mass of the liquid crystal composition, it is preferably 5% by mass or more and 60% by mass or less, more preferably 5% by mass or more and 50% by mass or less, and most preferably 5% by mass or more and 40% by mass or less. The mass% or more is preferably 30% by mass or less, preferably 5% by mass or more and 20% by mass or less, and preferably 5% by mass or more and 15% by mass or less.

The content of the compound represented by the formula (ii) is preferably from 25 to 50%, more preferably from 29 to 45%, still more preferably from 32 to 40%.

Further, when the liquid crystal composition of the present invention contains two kinds of compounds represented by the general formula (i) and contains the compound represented by the formula (1.3), the content of the compound represented by the formula (1.3) is in the liquid crystal of the present invention. Composition In the total amount of 100% by mass, it is preferably 1% by mass or more and 25% by mass or less, more preferably 1% by mass or more and 23% by mass or less, more preferably 2% by mass or more and 20% by mass or less, and 2% by mass or more and 20% by mass or more. The mass% or less is preferably 5% by mass or more and 20% by mass or less, preferably 10% by mass or more and 20% by mass or less, more preferably 11% by mass or more and 18% by mass or less, and particularly preferably 13% by mass or more and 17% by mass or less. The following are preferred.

In addition, when the liquid crystal composition of the present invention contains two kinds of compounds represented by the general formula (i) and contains a compound represented by the following formula (11.2), the content of the compound represented by the formula (11.2) is in the present invention. The total amount of the liquid crystal composition is preferably 1% by mass or more and 25% by mass or less, more preferably 1% by mass or more and 23% by mass or less, more preferably 2% by mass or more and 20% by mass or less, and preferably 5 mass%. It is preferable that it is 18% by mass or more and more preferably 6% by mass or more and 17% by mass or less, and preferably 10% by mass or more and 17% by mass or less.

Further, the compound represented by the formula (1.3) and the compound represented by the formula (11.2) are preferably used, and the total content thereof is preferably from 10 to 35%, more preferably from 13 to 32%.

The total content of the two types of compounds represented by the formula (i) and the compound represented by the formula (ii) is preferably from 27 to 50%, more preferably from 40 to 50%, still more preferably from 42 to 49%.

Combination of two types of compounds represented by the formula (i), a compound represented by the formula (ii), a compound represented by the formula (44.2), the formula (11.2) and the formula (1.3) The content is 50 to 85%, preferably 60 to 80%, 70 to 80% is better, and 70 to 75% is particularly good.

Two kinds of compounds represented by the formula (i), a compound represented by the formula (ii), two kinds of compounds represented by the formula (X-6), and one type represented by the formula (IV-2) The total content of the compound, the compound represented by the formula (11.2) and the compound represented by the formula (1.3) is preferably 70 to 100%, more preferably 80 to 100%, still more preferably 85 to 95%, and 88. 92% is especially good.

Two kinds of compounds represented by the formula (i), a compound represented by the formula (ii), two kinds of compounds represented by the formula (X-6), and one type represented by the formula (IV-2) The total content of the compound and the compound of the one type represented by the formula (IX-2-2) is preferably 40 to 80%, more preferably 50 to 70%, and still more preferably 60 to 70%, 62~ 66% is especially good.

Further, in the case where the liquid crystal composition of the present invention contains three kinds of compounds represented by the general formula (i), it is preferred to contain at least one selected from the compounds shown below.

When the liquid crystal composition of the present invention contains three kinds of compounds represented by the formula (i) and the compound represented by the above formula (31.2), the content represented by the formula (31.2) is preferably from 1 to 10%, and 5 is preferable. ~10% is better.

When the liquid crystal composition of the present invention contains three kinds of compounds represented by the formula (i) and the compound represented by the above formula (31.4), the content represented by the formula (31.4) is preferably from 1 to 10%, and is preferably 1 ~5% is better.

When the liquid crystal composition of the present invention contains three kinds of compounds represented by the formula (i) and the compound represented by the above formula (44.1), the content represented by the formula (44.1) is preferably from 1 to 10%, and 3 is preferable. ~8% is better.

When the liquid crystal composition of the present invention contains three kinds of compounds represented by the formula (i) and the compound represented by the above formula (44.2), the content represented by the formula (44.2) is preferably from 1 to 10%, and 5 is preferable. ~10% is better.

When the liquid crystal composition of the present invention contains three kinds of compounds represented by the formula (i) and the compound represented by the above formula (11.1), the content represented by the formula (11.1) is preferably from 1 to 10%, and 5 is preferable. ~10% is better.

When the liquid crystal composition of the present invention contains three kinds of compounds represented by the formula (i) and the compound represented by the above formula (11.2), the content represented by the formula (11.2) is preferably 5 to 20%, and 8 is preferable. ~16% is better.

The liquid crystal composition of the present invention contains three types of compounds represented by the general formula (i) In the case of the compound represented by the above formula (8.1), the content represented by the formula (8.1) is preferably 0.5 to 5%, more preferably 0.5 to 2%.

Moreover, when the liquid crystal composition of the present invention contains three kinds of compounds represented by the general formula (i) and contains a compound represented by the following formula (ii), the content of the compound represented by the formula (ii) is in the present invention. In the total amount of 100% by mass of the liquid crystal composition, it is preferably 5% by mass or more and 60% by mass or less, more preferably 10% by mass or more and 57% by mass or less, and more preferably 13% by mass or more and 55% by mass or less. The mass% or more is 50% by mass or less, preferably 18% by mass or more and 48% by mass or less, more preferably 20% by mass or more and 45% by mass or less, more preferably 25% by mass or more and 45% by mass or less, and preferably 28 to 40% by weight. % is more preferable, and 30% by mass or more and 40% by mass or less are particularly preferable.

The total content of the compound represented by the formula (i) is preferably from 10 to 25%, more preferably from 13 to 22%.

In addition, when the liquid crystal composition of the present invention contains three kinds of compounds represented by the general formula (i) and contains a compound represented by the following formula (26.2), the content of the compound represented by the formula (26.2) is in the present invention. The total amount of the liquid crystal composition is 100% by mass, preferably 1 to 14% by mass, more preferably 1 to 10%, and still more preferably 2 to 8%.

In addition, when the liquid crystal composition of the present invention contains three kinds of compounds represented by the general formula (i) and contains a compound represented by the following formula (1.3), the content of the compound represented by the formula (1.3) is in the present invention. In the total amount of 100% by mass of the liquid crystal composition, the amount is 1% by mass or more and 25% by mass or less. Preferably, it is 2% by mass or more and 23% by mass or less, preferably 2% by mass or more and 20% by mass or less, more preferably 5% by mass or more and 18% by mass, and 65% by mass or more and 17% by mass or less and 11% by mass. The above 17 mass% or less is preferable, and 12 mass% or more and 17 mass% or less are preferable, and 13 mass% or more and 17 mass% or less are preferable, and 14 mass% or more and 17 mass% or less are preferable.

In addition, when the liquid crystal composition of the present invention contains three kinds of compounds represented by the general formula (i) and contains a compound represented by the following formula (28.3), the content of the compound represented by the formula (28.3) is in the present invention. In the total amount of 100% by mass of the liquid crystal composition, it is preferably 1% by mass or more and 25% by mass or less, more preferably 2% by mass or more and 23% by mass or less, and more preferably 5% by mass or more and 23% by mass or less. The mass% or more is 23% by mass or less, preferably 10% by mass or more and 20% by mass or less, more preferably 15% by mass or more and 18% by mass or less, and particularly preferably 17% by mass or more and 18% by mass or less.

<Compound represented by the formula (ii)>

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

The content of the compound represented by the formula (ii) in the liquid crystal composition is 3% by mass or more based on the total mass of the liquid crystal composition of the present invention, from the viewpoint of the reaction rate, electrical, and optical reliability. Preferably, it is preferably 10% by mass or more, and more preferably 12% by mass or more. 15% by mass or more is preferable, 20% by mass or more is preferable, 22% by mass or more is preferable, 23% by mass or more is preferable, 24% by mass or more is preferable, and 30% by mass or more is preferable, and 37 mass is preferable. More than % is preferred. On the other hand, the content of the compound represented by the formula (ii) 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. 46% by mass or less is preferable, 45% by mass or less is preferable, 44% by mass or less is preferable, 42% by mass or less is preferable, and 40% by mass or less is preferable, and 38% by mass is preferable. In the following, it is preferably contained in an amount of 36% by mass or less, more preferably 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 (ii) in the liquid crystal composition is preferably from 1 to 60% by mass, and from 1 to 50% by mass, based on the total mass of the liquid crystal composition of the present invention. Preferably, 10 to 50% by mass is preferred, 10 to 45% by mass is preferred, 10 to 26% by mass is preferred, 12 to 17% by mass is preferred, and 3 to 15% by mass is preferred, and 5 to 12% by mass is preferred. The mass % is preferably, 15 to 38% by mass is preferred, 15 to 32% by mass is preferred, 20 to 45% by mass is preferred, 20 to 42% by mass is preferred, and 22 to 44% by mass is preferred. 24 to 40% by mass is preferred, 23 to 36% by mass is preferred, 29 to 42% by mass is preferred, 30 to 50% by mass is preferred, 35 to 50% by mass is preferred, and 37 to 46% by mass is preferred. % is preferably, and 30 to 38% by mass is preferred.

Further, the total content of the three types of compounds represented by the formula (i) and the compound represented by the formula (ii) is preferably from 10 to 60%, preferably from 12 to 60%, based on the total mass of the liquid crystal composition. Preferably, 17 to 60% is preferred, 24 to 60% is preferred, 25 to 60% is preferred, 26 to 60% is preferred, 30 to 60% is preferred, and 31 to 60% is preferred. Good, 40~60% is better, 41~60% For better, 48~58% is especially good.

Three kinds of compounds represented by the formula (i), a compound represented by the formula (ii), a compound represented by the formula (26.2), a compound represented by the formula (1.3), and a compound represented by the formula (II-2) The total content of the compound of the type and the compound represented by the formula (28.3) is preferably 58 to 100%, more preferably 80 to 100%, and more preferably 90 to 100%, based on the total mass of the liquid crystal composition. It is even better, 95~100% is better, 98~100% is better, and 100% is especially good.

Three kinds of compounds represented by the formula (i), a compound represented by the formula (ii), a compound represented by the formula (26.2), a compound represented by the formula (1.3), and a compound represented by the formula (II-2) The total content of the compound of the type and the compound represented by the formula (8.1) is preferably 70 to 90%, more preferably 75 to 85%, and 78 to 85%, based on the total mass of the liquid crystal composition. Better yet, 80~84% is especially good.

Three kinds of compounds represented by the formula (i), a compound represented by the formula (ii), a compound represented by the formula (26.2), a compound represented by the formula (1.3), and a compound represented by the formula (II-2) The total content of the compounds of the one type is preferably from 48 to 100%, more preferably from 75 to 100%, more preferably from 80 to 95%, and more preferably from 85 to 95%, based on the total mass of the liquid crystal composition. Better yet, 88~92% is especially good.

Three kinds of compounds represented by the formula (i), a compound represented by the formula (ii), a compound represented by the formula (26.2), a compound represented by the formula (1.3), and a compound represented by the formula (II-2) The total content of the compound of the kind, the compound of the two types represented by the formula (X-6), and the compound of the two types represented by the formula (IX-2-2) is based on the total mass of the liquid crystal composition. system 75~100% is better, 80~95% is better, 85~95% is better, and 90~94% is especially good.

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

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

OL means 0, 1, 2 or 3.

B ^L1 , B ^L2 and B ^L3 each independently represent a group selected from the group consisting of: (a) 1,4-cyclohexylene (one of -CH ₂ - present in this group or at least 2 which is not adjacent) -CH ₂ - may be substituted with -O-), and (b) 1,4-phenylene (one of the CH- or the non-contiguous at least two -CH= When substituted with -N=), at least one of the hydrogen atoms of the above-mentioned group (a) and the group (b) may be independently substituted with a cyano group, a fluorine atom or a chlorine atom.

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

OL is 2 or 3 and L ^L2 is a plurality of cases, and they may be the same or different.

OL is 2 or 3 and B ^L3 is a plurality of cases, and they may be the same or different.

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

The type of the compound which can be combined is not particularly limited, but may be suitably used in combination depending on the desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence (refractive index to anisotropy). The type of the compound to be used is, for example, one type in one embodiment of the present invention. Or other embodiments of the present invention are two types. Further, other embodiments of the present invention are three types. Further, other embodiments of the present invention are of four types. Further, other embodiments of the present invention are of five types. Further, other embodiments of the present invention are six types. Further, other embodiments of the present invention are seven types. Further, other embodiments of the present invention are eight types. Further, other embodiments of the present invention are nine types. Further, other embodiments of the present invention are 10 or more types.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (L) is required to depend on low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, dripping marks, afterimage, It is suitable to adjust the properties required for dielectric anisotropy and the like.

The content of the above compound is, for example, 1 to 95% by mass based on the total mass of the liquid crystal composition of the present invention. Or another embodiment of the present invention is that the content is from 10 to 95% by mass. Further, in another embodiment of the present invention, the content is 20% by mass to 95% by mass. Further, in another embodiment of the present invention, the content is from 30 to 95% by mass. Further, in another embodiment of the present invention, the content is 40 to 95% by mass. Further, other embodiments of the present invention are the aforementioned The amount is 50 to 95% by mass. Further, in another embodiment of the present invention, the content is 55 to 95% by mass. Further, in another embodiment of the present invention, the content is 60 to 95% by mass. Further, in another embodiment of the present invention, the content is 65 to 95% by mass. Further, in another embodiment of the present invention, the content is 70 to 95% by mass. Further, in another embodiment of the present invention, the content is 75 to 95% by mass. Further, in another embodiment of the present invention, the content is 80% by mass to 95% by mass.

Further, 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. Further, in another embodiment of the present invention, the content is 1 to 85% by mass. Further, in another embodiment of the present invention, the content is 1 to 75% by mass. Further, in another embodiment of the present invention, the content is from 1 to 65% by mass. Further, in another embodiment of the present invention, the content is from 1 to 55% by mass. Further, in another embodiment of the present invention, the content is 1 to 45% by mass. Further, in another embodiment of the present invention, the content is 1% to 35% by mass. Further, in another embodiment of the present invention, the content is 1% to 25%.

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

R ^L1 and R ^{L2 are} in the case where the ring to which the bond is bonded is a phenyl group (aromatic), a linear alkyl group having 1 to 5 carbon atoms, and a linear carbon atom having 1 to 4 (or more) Alkoxy group or an alkenyl group having 4 to 5 carbon atoms is preferred, and the ring to which the bond is bonded is cyclohexane, piper, or In the case of a saturated ring structure such as an alkane, a linear alkyl group having 1 to 5 carbon atoms, a linear alkoxy group having 1 to 4 or more carbon atoms, or a linear carbon The alkenyl group having 2 to 5 atoms is preferred.

In the case where the compound represented by the formula (L) is required to satisfy the chemical stability of the liquid crystal composition, it is preferred that the molecule does not have a chlorine atom in the molecule.

The compound represented by the formula (L), for example, a compound selected from the group of compounds represented by the formula (I) is preferred.

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 4 carbon atoms, or an alkenyl group having 2 to 5 carbon atoms, and A ¹¹ And A ¹² each independently represents 1,4-cyclohexylene, 1,4-phenylene, 2-fluoro-1,4-phenylene or 3-fluoro-1,4-phenylene. However, the compound represented by the above formula (ii) is excluded.

The kind of the compound which can be combined is not particularly limited, but it is suitably used in combination in view of the low-temperature solubility, 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 other embodiments of the present invention are two types. Further, other embodiments of the present invention are three types. Further, other embodiments of the present invention are of four types. Further, other embodiments of the present invention are of five types. In addition, other implementations of the invention The morphology is 6 or more types.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (I) is required to depend on low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, dripping marks, afterimage, It is suitable to adjust the properties required for dielectric anisotropy and the like.

The content of the compound represented by the above formula (I) is, for example, 3 to 75% by mass in terms of one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Or another embodiment of the present invention is that the content is 15 to 75% by mass. Further, in another embodiment of the present invention, the content is from 18 to 75% by mass. Further, in another embodiment of the present invention, the content is 20 to 75% by mass. Further, in another embodiment of the present invention, the content is from 29 to 75% by mass. Further, in another embodiment of the present invention, the content is 35 to 75% by mass. Further, in another embodiment of the present invention, the content is 42 to 75% by mass. Further, in another embodiment of the present invention, the content is from 47 to 75% by mass. Further, in another embodiment of the present invention, the content is 53 to 75% by mass. Further, in another embodiment of the present invention, the content is 56 to 75% by mass. Further, in another embodiment of the present invention, the content is 60 to 75% by mass. Further, in 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. Further, in another embodiment of the present invention, the content is from 3 to 55% by mass. Further, in another embodiment of the present invention, the content is from 3 to 50% by mass. Further, in another embodiment of the present invention, the content is 3 to 45% by mass. In addition, other implementations of the invention The content of the form is 3 to 40% by mass. Further, in another embodiment of the present invention, the content is from 3 to 35% by mass. Further, in another embodiment of the present invention, the content is 3 to 30% by mass.

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

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

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

In the above formula (I-1), R ¹¹ and R ¹² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 4 carbon atoms or an alkenyl group having 2 to 5 carbon atoms. However, the compound represented by the above formula (ii) is excluded.

The types of compounds that can be combined are not particularly limited, but they are The properties such as low temperature solubility, transfer temperature, electrical reliability, and birefringence are preferably used in combination. The type of the compound to be used is, for example, one type in one embodiment of the present invention. Or other embodiments of the present invention are two types. Further, other embodiments of the present invention are three types. Further, other embodiments of the present invention are of four types. Further, other embodiments of the present invention are five or more types.

In the case where the liquid crystal composition of the present invention is blended with the compound represented by the formula (I-1), the content of the compound is required to be compatible with low-temperature solubility, transfer temperature, electrical reliability, birefringence, and process suitability. It is suitable to adjust the performance requested by dripping, residual image, dielectric anisotropy, and the like.

The content of the compound represented by the above formula (I-1), for example, in one embodiment of the present invention, is from 3 to 70% by mass based on the total mass of the liquid crystal composition of the present invention. Or another embodiment of the present invention is that the content is 15 to 70% by mass. Further, in another embodiment of the present invention, the content is from 18 to 70% by mass. Further, in another embodiment of the present invention, the content is 25 to 70% by mass. Further, in another embodiment of the present invention, the content is from 29 to 70% by mass. Further, in another embodiment of the present invention, the content is 31% to 70% by mass. Further, in another embodiment of the present invention, the content is 35 to 70% by mass. Further, in another embodiment of the present invention, the content is 43% to 70% by mass. Further, in another embodiment of the present invention, the content is 47% to 70% by mass. Further, in another embodiment of the present invention, the content is 50% to 70% by mass. Further, in another embodiment of the present invention, the content is 53 to 70% by mass. Furthermore, other embodiments of the present invention are those having a mass of 56 to 70 %.

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

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

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

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

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (I-1-1) is required to correspond to low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, and dripping trace. It is suitable to adjust the performance required for image retention, dielectric anisotropy, and the like.

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. Or another embodiment of the present invention is that the content is 2 to 30% by mass. Further, in another embodiment of the present invention, the content is 4 to 30% by mass. Further, in another embodiment of the present invention, the content is 6 to 30% by mass. Further, in another embodiment of the present invention, the content is 8 to 30% by mass. Further, in another embodiment of the present invention, the content is from 9 to 30% by mass. Further, in another embodiment of the present invention, the content is 10% by mass 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. Further, in another embodiment of the present invention, the content is 2 to 22% by mass. Further, in another embodiment of the present invention, the content is 2 to 17% by mass. Further, in another embodiment of the present invention, the content is 2 to 16% by mass. Further, in another embodiment of the present invention, the content is 2 to 14% by mass. Further, in another embodiment of the present invention, the content is 2 to 13% by mass. Further, in another embodiment of the present invention, the content is 2 to 12% by mass. Further, 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 consisting of compounds represented by the formulae (1.1) to (1.3). The compound represented by the formula (1.2) or the formula (1.3) is preferred, and in particular, the compound represented by the formula (1.3) is preferred. In addition, when the compound represented by the formula (I) is contained, the content of the compound represented by the formula (1.3) is preferably 14% by mass or more based on 100% by mass of the liquid crystal composition of the present invention. In addition, when the compound represented by the formula (i) is contained in the range of 2 to 3, the content of the compound represented by the formula (1.3) is preferably 11% by mass or more based on 100% by mass of the liquid crystal composition of the present invention.

When the compounds represented by the formula (1.2) or the formula (1.3) are used singly, when the content of the compound represented by the formula (1.2) is high, the reaction rate is improved, and the compound represented by the formula (1.3) is used. The content shown below is preferably a liquid crystal composition having a rapid reaction rate and high electrical reliability.

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. Or another embodiment of the present invention is that the content is 2 to 25% by mass. Further, in another embodiment of the present invention, the content is 4 to 25% by mass. Further, in another embodiment of the present invention, the content is 6 to 25% by mass. Further, in another embodiment of the present invention, the content is 7 to 25% by mass. Further, in another embodiment of the present invention, the content is 8 to 25% by mass. In addition, other embodiments of the present invention The above content is 9 to 25% by mass. Further, in 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. Further, in another embodiment of the present invention, the content is 2% to 18% by mass. Further, in another embodiment of the present invention, the content is 2 to 17% by mass. Further, in another embodiment of the present invention, the content is 2 to 16% by mass. Further, in another embodiment of the present invention, the content is 2 to 14% by mass. Further, in another embodiment of the present invention, the content is 2 to 13% by mass. Further, in another embodiment of the present invention, the content is 2 to 5% by mass.

Alternatively, or in addition, the compound represented by the formula (I-1) (except for the compound represented by the formula (ii)) is at least one selected from the group consisting of the compounds represented by the formula (I-1-2). The compound is preferred.

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 4 carbon atoms, or an alkenyl group having 2 to 5 carbon atoms.

The kind of the compound which can be combined is not particularly limited, but it is suitably used in combination in view of the low-temperature solubility, 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 other embodiments of the present invention are two types. Further, other embodiments of the present invention are three types.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (I-1-2) is required to correspond to low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, dripping trace, It is suitable to adjust the performance required for image sticking, dielectric anisotropy, and the like.

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. Or another embodiment of the present invention is that the content is 2 to 25% by mass. Further, in another embodiment of the present invention, the content is 4 to 25% by mass. Further, in another embodiment of the present invention, the content is 6 to 25% by mass. Further, in another embodiment of the present invention, the content is 7 to 25% by mass. Further, in another embodiment of the present invention, the content is 8 to 25% by mass. Further, in another embodiment of the present invention, the content is 9 to 25% by mass. Further, in another embodiment of the present invention, the content is 10 to 25% 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. Further, in another embodiment of the present invention, the content is 2% to 18% by mass. Further, in another embodiment of the present invention, the content is 2 to 17% by mass. Further, in another embodiment of the present invention, the content is 2 to 16% by mass. Further, in another embodiment of the present invention, the content is 2 to 14% by mass. Further, in another embodiment of the present invention, the content is 2 to 13% by mass.

Further, the compound represented by the formula (I-1-2) is preferably a compound selected from the group consisting of at least one compound represented by the formula (2.1), the formula (2.3), and the formula (2.4). (2.3) and / or a compound represented by formula (2.4) It is better. 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.

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

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

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).

The compound represented by the above formula (2.5) is adjusted in accordance with the properties of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. The content is preferably from 0 to 40% by mass, more preferably from 10 to 40% by mass, even more preferably from 15 to 35% by mass, based on the total mass of the liquid crystal composition of the present invention. .

Alternatively, the compound represented by the above formula (I) is preferably at least one compound selected from the group consisting of compounds represented by the formula (I-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 it is combined in view of the low-temperature solubility, 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 other embodiments of the present invention are two types. Further, other embodiments of the present invention are three types.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (I-2) is required to depend on low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, dripping trace, and residue. It is suitable to adjust the performance required for shadow, dielectric anisotropy, and the like.

The content of the compound represented by the above formula (I-2) is, for example, 1 to 30% by mass in one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Or another embodiment of the present invention is that the content is 2 to 30% by mass. Further, in another embodiment of the present invention, the content is 4 to 30% by mass. In addition, other embodiments of the present invention The above content is 6 to 30% by mass. Further, in another embodiment of the present invention, the content is 10% by mass to 30% by mass. Further, in another embodiment of the present invention, the content is 15 to 30% by mass. Further, in 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. Further, in another embodiment of the present invention, the content is 1% to 23% by mass. Further, in another embodiment of the present invention, the content is 1% to 18% by mass. Further, in another embodiment of the present invention, the content is 1% by mass to 15% by mass. Further, in another embodiment of the present invention, the content is 1 to 12% by mass. Further, in another embodiment of the present invention, the content is 1% by mass to 10% by mass. Further, in another embodiment of the present invention, the content is 1% by mass to 5% by mass.

Further, the compound represented by the above formula (I-2) is preferably at least one compound selected from the group consisting of compounds represented by formula (3.1) to formula (3.4), and formula (3.1) and formula (3.3). And a compound represented by the formula (3.4) is preferred. In particular, the compound represented by the formula (3.1) is preferred because it particularly improves the reaction rate of the liquid crystal composition of the present invention. Further, in the case of seeking Tni having a higher 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 mass% or more and 40 mass% or less, 4 mass% or more and 40 mass% or less, 10 mass% or more and 40 mass% or less, 12 mass% or more, 40 mass% or less, and 14 mass%. 40% 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, 30% by mass or more and 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, 3% by mass or more and 12% by mass or less, and 3% by mass or less 14质量% 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, 3% by mass or more and 26% by mass or less, and 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 consisting 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 it is combined in view of the low-temperature solubility, 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 other embodiments of the present invention are two types. Further, other embodiments of the present invention are three types.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (I-3) is required to depend on low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, dripping trace, and residue. It is suitable to adjust the performance required for shadow, dielectric anisotropy, and the like.

The content of the compound represented by the above formula (I-3) is, for example, 3 to 60% by mass in terms of one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Or another embodiment of the present invention is that the content is 4 to 60% by mass. Further, in another embodiment of the present invention, the content is 15 to 60% by mass. Further, in another embodiment of the present invention, the content is 25 to 60% by mass. Further, in another embodiment of the present invention, the content is 30% to 60% by mass. Further, in another embodiment of the present invention, the content is 35 to 60% by mass. Further, in another embodiment of the present invention, the content is 38 to 60% by mass. Further, in another embodiment of the present invention, the content is 40 to 60% by mass. Further, in another embodiment of the present invention, the content is 42 to 60% by mass. Further, the present invention In other embodiments, the content is 45 to 60% by mass. Further, in another embodiment of the present invention, the content is 47% to 60% by mass. Further, in another embodiment of the present invention, the content is 50% to 60% by mass.

Further, the content of the above 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. Further, in another embodiment of the present invention, the content is 3 to 45% by mass. Further, in another embodiment of the present invention, the content is from 3 to 40% by mass. Further, in another embodiment of the present invention, the content is 3 to 30% by mass. Further, in another embodiment of the present invention, the content is 3 to 20% by mass. Further, in another embodiment of the present invention, the content is 3 to 15% by mass. Further, in another embodiment of the present invention, the content is 3 to 5% by mass.

When the solubility in low temperature is emphasized, the effect is high when the content is set to a large value. Conversely, when the reaction rate is emphasized, the effect is set to be high when the content is set to be small. Further, in the case of improving the characteristics of dripping marks or afterimages, it is preferred to set the range of the content to be intermediate.

Further, the compound represented by the above formula (I-3) is preferably a compound selected from the group consisting of compounds represented by formula (4.1) to formula (4.3), and a compound represented by formula (4.3). It is better.

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

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

In the above formula (I-4), R ¹¹ and R ¹² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 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 it is combined in view of the low-temperature solubility, 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 other embodiments of the present invention are two types.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (I-4) is required to correspond to the solubility at low temperature and the transfer temperature. It is suitable to adjust the performance required for electrical reliability, birefringence, process suitability, dripping marks, afterimage, and dielectric anisotropy.

The content of the compound represented by the above formula (I-4) is, for example, 2 to 50% by mass based on one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Or another embodiment of the present invention is that the content is 5 to 50% by mass. Further, in another embodiment of the present invention, the content is 6 to 50% by mass. Further, in another embodiment of the present invention, the content is 8 to 50% by mass. Further, in another embodiment of the present invention, the content is 10 to 50% by mass. Further, in another embodiment of the present invention, the content is from 12 to 50% by mass. Further, in another embodiment of the present invention, the content is 15 to 50% by mass. Further, in another embodiment of the present invention, the content is 20 to 50% by mass. Further, in another embodiment of the present invention, the content is 25 to 50% by mass. Further, in another embodiment of the present invention, the content is 30 to 50% by mass. Further, in another embodiment of the present invention, the content is 35 to 50% by mass. Further, in another embodiment of the present invention, the content is 40 to 50% by mass.

Further, the content of the above-mentioned compound, for example, in one embodiment of the present invention, is from 2 to 40% by mass based on the total mass of the liquid crystal composition of the present invention. Further, in another embodiment of the present invention, the content is 2 to 35% by mass. Further, in another embodiment of the present invention, the content is 2 to 30% by mass. Further, in another embodiment of the present invention, the content is 2 to 20% by mass. Further, in another embodiment of the present invention, the content is 2 to 15% by mass. Further, in another embodiment of the present invention, the content is 2 to 10% by mass.

When a high birefringence is obtained, when the content is set to a large number The effect is high, and conversely, when the high Tni is emphasized, the effect is set to be high when the content is set to be small. Further, in the case of improving the characteristics of dripping marks or afterimages, it is preferred to set the range of the content to be intermediate.

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

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. In the above, for example, 4% by mass or more and 30% by mass or less, 6% by mass or more and 30% by mass or less, 8% by mass or more and 30% by mass or less, 10% by mass or more and 30% by mass or less, and 12% by mass or more and 30% by mass or less. 14% by mass or more and 30% by mass or less, 16% by mass or more and 30% by mass or less, 18% by mass or more and 30% by mass or less, 20% by mass or more and 30% by mass or less, 22% by mass or more and 30% by mass or less, and 23% by mass or more. 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, and 4% by mass or more. 5% by weight or less, 4% by mass or more and 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 18% by mass or less, 4 The mass% or more is 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.

The content of the compound represented by the above formula (5.2) is preferably 2 to 20%, more preferably 5 to 15%, more preferably 10 to 15%, based on the total mass of the liquid crystal composition of the present invention. The compound represented by the formula (5.2) and the compound represented by the formula (45.2) are preferably used.

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

In the above formula (I-5), 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.

The kind of the compound which can be combined is not particularly limited, but it is combined in view of the low-temperature solubility, 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 other embodiments of the present invention are two types.

The liquid crystal composition of the present invention is represented by the above formula (I-5) The content of the compound is suitably adjusted in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, dripping marks, afterimage, dielectric anisotropy, and the like.

The content of the above compound is, for example, 1 to 50% by mass based on the total mass of the liquid crystal composition of the present invention. Or another embodiment of the present invention is that the content is 5 to 50% by mass. Further, in another embodiment of the present invention, the content is 8 to 50% by mass. Further, in another embodiment of the present invention, the content is from 11 to 50% by mass. Further, in another embodiment of the present invention, the content is 13 to 50% by mass. Further, in another embodiment of the present invention, the content is 15 to 50% by mass. Further, in another embodiment of the present invention, the content is 17 to 50% by mass. Further, in another embodiment of the present invention, the content is 20 to 50% by mass. Further, in another embodiment of the present invention, the content is 25 to 50% by mass. Further, in another embodiment of the present invention, the content is 30 to 50% by mass. Further, in another embodiment of the present invention, the content is 35 to 50% by mass. Further, in another embodiment of the present invention, the content is 40 to 50% by mass.

Further, the content of the above compound is, for example, 1 to 40% in one embodiment of the present invention with respect to the total mass of the liquid crystal composition of the present invention. Further, in another embodiment of the present invention, the content is 1 to 35%. Further, in another embodiment of the present invention, the content is 1% to 30%. Further, in another embodiment of the present invention, the content is 1% to 20%. Further, in another embodiment of the present invention, the content is 1% to 15%. Further, in another embodiment of the present invention, the content is 1% to 10%. Further, in another embodiment of the present invention, the content is 1% to 5%.

When the solubility in low temperature is emphasized, the effect is high when the content is set to a large value. Conversely, when the reaction rate is emphasized, the effect is set to be high when the content is set to be small. Further, in the case of improving the characteristics of dripping marks or afterimages, it is preferred to set the range of the content to be intermediate.

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), and formula (6.3) and formula (6.4). The compound represented by the formula (6.6) is preferably and/or.

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 based on the total mass of the liquid crystal composition of the present invention, and preferably 4% by mass or more and 30% by mass or less. 5 mass% or more and 30 mass% or less are preferable, and 6 mass% or more and 30 mass% or less are preferable, and 9% by mass or more and 30 mass% or less is preferable, and 12 mass% or more and 30 mass% or less are preferable, and 14 is preferable. It is preferable that the mass% is 30% by mass or less, preferably 16% by mass or more and 30% by mass or less, and preferably 18% by mass or more. The mass% or less is preferably 20% by mass or more and 24% by mass or less, and preferably 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).

The content of the compound represented by the above formula (6.7) is preferably adjusted in accordance with the properties 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. The compound is preferably contained in an amount of 2% by mass or more, more preferably 3% by mass or more, more preferably 5% by mass or more, and most preferably 7% by mass or more. Further, a range of 4% by mass or more and 16% by mass or less is preferable.

Alternatively, the compound represented by the above formula (I) is preferably at least one compound selected from the group consisting of compounds represented by the formula (I-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 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and X ¹¹ And X ¹² each independently represents a fluorine atom or a hydrogen atom, and any of X ¹¹ or X ¹² is a fluorine atom.

The content of the compound represented by the above formula (I-6) is preferably 2% by mass or more and 30% by mass or less based on the total mass of the liquid crystal composition of the present invention, and 4% by mass or more and 30% by mass or less is more. Preferably, it is preferably 5 mass% or more and 30 mass% or less, more preferably 6 mass% or more and 30 mass% or less, more preferably 9 mass% or more and 30 mass% or less, and still more preferably 12 mass% or more and 30 mass% or less. 14% by mass or more and 30% by mass or less is preferable, 16% by mass or more and 30% by mass or less is preferable, and 18% by mass or more and 25% by mass or less is preferable, and 20% by mass or more and 24% by mass or less are preferable, and 22 mass% is preferable. More than or equal to 23% by mass or less is preferred.

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

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

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

The content of the compound represented by the above formula (I-7) is relative 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 1% by mass or more and 15% by mass or less, more preferably 1% by mass or more and 10% by mass or less, and 1% by mass or less. The above 5 mass% or less is preferable.

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

With respect to the compound represented by the above formula (I-7), it is preferred to blend the compound represented by the formula (8.1).

It is preferred that the compound represented by the formula (8.1) is contained in combination with the three types of compounds represented by the formula (i).

Alternatively, the compound represented by the above formula (I) is preferably at least one compound selected from the group consisting of compounds represented by the formula (I-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 preferable to combine 1 to 3 types in view of the low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (I-8) is low. The solubilization property of temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, dripping trace, afterimage, dielectric anisotropy, etc., relative to the total mass of the liquid crystal composition of the present invention 1 to 30% by mass is preferred, 1 to 25% by mass is preferred, 1 to 20% by mass is preferred, 1 to 18% by mass is preferred, and 3 to 18% by mass is preferred.

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

Alternatively, or in addition, the compound represented by the above formula (L), A compound selected from at least one of the compounds represented by the formula (II) is preferred.

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

The kind of the compound which can be combined is not particularly limited, but it is combined in view of the low-temperature solubility, 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 other embodiments of the present invention are two types. Further, still another embodiment of the present invention is three types. Further, other embodiments of the present invention are four or more types.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (II) is required to depend on low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, dripping marks, afterimage, It is suitable to adjust the properties required for dielectric anisotropy and the like.

The content of the compound represented by the above formula (II) is, for example, 3 to 50% by mass based on one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Or another embodiment of the present invention is that the content is 5 to 50% by mass. Further, in another embodiment of the present invention, the content is 7 to 50% by mass. Further, in another embodiment of the present invention, the content is 10 to 50% by mass. In addition, other embodiments of the present invention The above content is 14 to 50% by mass. Further, in another embodiment of the present invention, the content is 16 to 50% by mass. Further, in another embodiment of the present invention, the content is 20 to 50% by mass. Further, in another embodiment of the present invention, the content is 23 to 50% by mass. Further, in another embodiment of the present invention, the content is 26 to 50% by mass. Further, in another embodiment of the present invention, the content is 30 to 50% by mass. Further, in another embodiment of the present invention, the content is 35 to 50% by mass. Further, in 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. Further, in another embodiment of the present invention, the content is from 3 to 35% by mass. Further, in another embodiment of the present invention, the content is 3 to 30% by mass. Further, in another embodiment of the present invention, the content is 3 to 20% by mass. Further, in another embodiment of the present invention, the content is 3 to 15% by mass. Further, in another embodiment of the present invention, the content is 3 to 10% by mass. Further, in another embodiment of the present invention, the content is 3 to 5% by mass.

Further, the compound represented by the above formula (II) is preferably a compound selected from at least one of the group of compounds represented by the formula (II-1), for example.

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 in accordance with the low-temperature solubility, transfer temperature, electrical reliability, and birefringence, and is preferably 4% by mass or more and 24% by mass or less. Preferably, it is preferably 8 mass% or more and 18 mass% or less, and more preferably 12 mass% or more and 14 mass% or less.

Further, the compound represented by the formula (II-1) is preferably a compound represented by the formula (10.1) and/or the formula (10.2), for example. The compound represented by the formula (10.1) is preferably used in combination with the compound represented by the formula (45.2), and the content thereof is preferably 1 to 10%, more preferably 5 to 10%, and more preferably 6 to 9%. good.

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-2).

In the above 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 types of compounds that can be combined are not particularly limited, but they are The combination of low temperature solubility, transfer temperature, electrical reliability, and birefringence is combined. The type of the compound to be used is, for example, one type in one embodiment of the present invention. Or other embodiments of the present invention are 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) is required to depend on low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, dripping trace, and residue. It is suitable to adjust the performance required for shadow, dielectric anisotropy, and the like.

The content of the compound represented by the above formula (II-2) is, for example, from 3 to 35% by mass in one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Or another embodiment of the present invention is that the content is 4 to 35% by mass. Further, in another embodiment of the present invention, the content is 5 to 35% by mass. Further, in 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 from 9 to 35% by mass. Further, in another embodiment of the present invention, the content is 10 to 35 mass%. Further, in another embodiment of the present invention, the content is from 11 to 35% by mass. Further, in another embodiment of the present invention, the content is from 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%. Further, 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. Further, in another embodiment of the present invention, the content is 3 to 26% by mass. In addition, other embodiments of the present invention The above content is 3 to 20% by mass. Further, in another embodiment of the present invention, the content is from 3 to 16% by mass. Further, in another embodiment of the present invention, the content is 3 to 15% by mass. Further, in another embodiment of the present invention, the content is from 3 to 14% by mass. Further, in another embodiment of the present invention, the content is 3 to 13% by mass. Further, in another embodiment of the present invention, the content is 3 to 12% by mass. Further, in another embodiment of the present invention, the content is 3 to 10% by mass. Further, in another embodiment of the present invention, the content is 3 to 9% by mass. Further, in another embodiment of the present invention, the content is 3 to 7% by mass.

In addition, the compound represented by the above formula (II-2) is preferably a compound selected from the group consisting of at least one compound represented by the formula (11.1) to the formula (11.3).

The compound represented by the formula (11.1) may be contained in accordance with the properties of solubility at low temperature, transfer temperature, electrical reliability, and birefringence, and may also contain a compound represented by the formula (11.2), or may contain a formula ( 11.1) Both the compound represented by the formula (11.2) and the compound represented by the formula (11.2) may contain all 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 based on the total mass of the liquid crystal composition of the present invention. 2 to 25% by mass is preferred, and 2 to 20% by mass is preferred. In these, for example, 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%, 6 to 13 mass%, 8~ 15% by mass, 12 to 20% by mass, and 13 to 16% by mass are preferred.

In the liquid crystal composition containing the compound of the formula (1), the content of the compound represented by the formula (11.1) is preferably from 1 to 15% based on the total mass of the liquid crystal composition of the present invention. 3~12% is better, and 5~10% is better.

Further, the content of the compound represented by the above formula (11.2) is preferably 1 to 30% by mass, preferably 1 to 25% by mass, and preferably 1 to 20% by mass based on the total mass of the liquid crystal composition of the present invention. Preferably, 1 to 17% by mass is preferred. In this case, for example, one embodiment is preferably 1 to 11% by mass, 3 to 11% by mass is preferred, 5 to 11% by mass is more preferably, and 6 to 11% by mass is more preferably, 9 ~11% by mass is more preferable, and other embodiments are preferably 2 to 15% by mass, 2 to 9% by mass is preferred, 4 to 5% by mass is more preferable, and other embodiments are 5 to 17 The mass % is preferred.

In the liquid crystal composition containing the compound of the formula (1), the content of the compound represented by the formula (11.2) is preferably from 1 to 20% based on the total mass of the liquid crystal composition of the present invention. 5~20% is better, 9~20% is better, and 9~15% is especially good.

In the liquid crystal composition containing the compound of the two types of the formula (i), the content of the compound represented by the formula (11.2) is preferably from 6 to 20% based on the total mass of the liquid crystal composition of the present invention. 10~20% is better, and 12~17% is better.

A liquid crystal composition containing one type of compound represented by the general formula (i) The content of the compound represented by the formula (11.2) is preferably from 9 to 20%, more preferably from 12 to 17%, based on the total mass of the liquid crystal composition of the present invention.

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 1% by mass or more based on the total mass of the liquid crystal composition of the present invention. The mass% or less is preferably 1% by mass or more and 40% by mass or less, preferably 1% by mass or more and 35% by mass or less, more preferably 1% by mass or more and 30% by mass or less, and 3% by mass or more and 30% by mass or less. The following is preferable, and 3 mass% or more and 26 mass% or less are preferable, and 3 mass% or more and 20 mass% or less are preferable, and 3 mass% or more and 16 mass% or less are preferable, and 3 mass% or more and 15 mass% or less are preferable. Preferably, it is 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, more preferably 3% by mass or more and 12% by mass or less, and still more preferably 3% by mass or more and 10% by mass or less. 3% by mass or more and 9% by mass or less is preferable, and 3% by mass or more and 7% by mass or less is preferable, and 4% by mass or more and 30% by mass or less is preferable, and 5% by mass or more and 30% by mass or less is preferable, and 8 is preferable. More preferably, the mass% is 30% by mass or less, more preferably 9% by mass or more and 30% by mass or less, and more preferably 10% by mass or more and 30% by mass or less. , More than 11 mass% to 30 mass% is preferred, more than 12 mass% to 30 mass% is preferred, more than 13 mass% to 30 mass% is preferred, more than 15 mass% to 30 mass% is preferred. In the above, for example, 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 and 16% by mass or less. 11% by mass or more and 26% by mass or less, and 11% by mass or more and 20% by mass or less are preferable.

Alternatively, or in addition, examples of the compound represented by the above formula (II) A compound selected from at least one selected from the group consisting of compounds represented by the formula (II-3) is preferred.

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

The type of the compound which can be combined is not particularly limited, but it is preferable to contain 1 to 3 of these compounds in view of the low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (II-3) depends on the solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dropping trace, afterimage, dielectric anisotropy, and the like. It is suitable to adjust the performance requested.

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. In this case, for example, 5 to 45 mass%, 8 to 45 mass%, 11 to 45 mass%, 14 to 45 mass%, 17 to 45 mass%, 20 to 45 mass%, 23 to 45 mass%, 26~ 45% by mass, 29 to 45% by mass, or 2 to 45% by mass, 2 to 40% by mass, 2 to 35% by mass, 2 to 30% by mass, 2 to 25% by mass, 2 to 20% by mass, 2 to 15% by mass The mass% and 2 to 10% by mass are preferable.

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

The compound represented by the formula (12.1) may be contained in accordance with the properties of solubility at low temperature, transfer temperature, electrical reliability, birefringence, etc., and may also contain a compound represented by the formula (12.2), or may contain a formula ( 12.1) Both the compound represented by the formula and the compound represented by the formula (12.2).

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

Further, the content of the compound represented by the formula (12.2) is preferably 3% 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 preferably 5% by mass or more and 40% by mass or less. 8 mass% or more and 40 mass% or less are preferable, and 10 mass% or more and 40 mass% or less are preferable, and 12 mass% or more and 40 mass% or less are preferable, and 15 mass% or more and 40 mass% or less are preferable, and 17 mass% is preferable. It is preferable that it is 30% by mass or more and 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 compound of the two is 15% by mass or more and 45% by mass based on the total mass of the liquid crystal composition of the present invention. The following is preferable, and it is preferably 19% by mass or more and 45% by mass or less, more preferably 24% by mass or more and 40% by mass or less, and more preferably 30% by mass or more and 35% by mass or less.

In addition, the content of the compound represented by the formula (12.3) is preferably 0.05% by mass or more and 2% by mass or less based on the total mass of the liquid crystal composition of the present invention, and preferably 0.1% by mass or more and 1% by mass or less. 0.2% by mass or more and 0.5% by mass or less is preferred. The compound represented by the formula (12.3) may 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, but it is preferable to use one or three kinds of the compounds among these compounds in view of the low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (II-3-1) is preferably adjusted in accordance with the low-temperature solubility, transfer temperature, electrical reliability, birefringence, etc., and is preferably 1% by mass or more and 24% by mass. % below is more Preferably, it is preferably 4% by mass or more and 18% by mass or less, and preferably 6% by mass or more and 14% by mass or less.

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

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.

Only one type of these compounds may be contained, or two or more types may be contained, but it is preferable to combine them suitably in accordance with the performance desired. The type of the combinable compound is not particularly limited, but it is contained in response to low temperature solubility, transfer temperature, electrical reliability, and birefringence. Among the compounds, 1 to 2 are preferred, and 1 to 3 are more preferred.

The content of the compound represented by the formula (II-4) is 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, and preferably 2% by mass or more and 15% by mass or less. 3 mass% or more and 15 mass% or less are preferable, and 4 mass% or more and 12 mass% or less are preferable, and 5 mass% or more and 7 mass% or less are preferable.

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 formulae (14.1) to (14.5), particularly, the formula (14.2), and Or, a compound represented by the formula (14.5) is preferred.

Alternatively, or in addition, the compound represented by the above formula (L) is selected At least one compound of the compound group represented by the formula (III) is preferred.

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 solubility or the birefringence of the liquid crystal composition. It is preferably 2% by mass or more and 20% by mass or less, and more 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 5% by mass or more and 10% by mass or less, and preferably 7% by mass or more and 9% by mass or less.

The compound represented by the formula (15.1) is preferably used in combination with the compound represented by the formula (45.2).

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

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

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

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

Alternatively, the compound represented by the above formula (III) is preferably at least one compound selected from the group consisting 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 solubilization properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence, and is relative to the liquid crystal composition of the present invention. The total mass is preferably 4% by mass or more and 23% by mass or less, more preferably 6% by mass or more and 18% by mass or less, and more preferably 10% by mass or more and 13% by mass or less.

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

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

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

The kind of the compound which can be combined is not particularly limited, but it is suitably combined in view of the low-temperature solubility, 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 other embodiments of the present invention are two types. Furthermore, other embodiments of the present invention are three types. Furthermore, other embodiments of the present invention are of four types. Furthermore, other embodiments of the present invention are of five types. Furthermore, other embodiments of the present invention are six or more types.

Further, the compound represented by the above formula (IV) 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) depends on the solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dropping trace, afterimage, dielectric anisotropy, and the like. It is suitable to adjust the performance requested.

The content of the compound represented by the above formula (IV-1) is, for example, 1 to 30% by mass based on the total mass of the liquid crystal composition of the present invention. Further, in another embodiment of the present invention, the content is 3 to 30% by mass. Furthermore, other embodiments of the present invention are the aforementioned The content is 4 to 30% by mass. Further, in another embodiment of the present invention, the content is 6 to 30% by mass. Further, in another embodiment of the present invention, the content is 11% by mass to 30% by mass. Further, in another embodiment of the present invention, the content is 20 to 30% by mass.

Further, for example, in one embodiment of the present invention, the content of the compound represented by the above formula (IV-1) is from 1 to 26% by mass based on the total mass of the liquid crystal composition of the present invention. Further, in another embodiment of the present invention, the content is 1 to 20% by mass. Further, in another embodiment of the present invention, the content is from 1 to 16% by mass. Further, in another embodiment of the present invention, the content is 1% to 6% by mass. Further, in another embodiment of the present invention, the content is 1% by mass to 5% 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 formulae (18.1) to (18.9).

The type of the compound which can be combined is not particularly limited, but one to three kinds of the compounds containing these are preferable, and one to four types are more preferable. Further, the molecular weight distribution of the selected compound is also broadly effective for solubility, and for example, one of the compounds represented by the formula (18.1) or (18.2) is selected, and the compound represented by the formula (18.4) or (18.5) is selected. In the case of the compound represented by the formula (18.6) or the formula (18.7), one type of compound is selected, and it is preferred to combine them as appropriate. Among these, a compound represented by the formula (18.1), the formula (18.3), the formula (18.4), the formula (18.6) and the formula (18.9) is preferred.

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

Alternatively, the compound represented by the above formula (IV) is preferably at least one compound selected from the group consisting of compounds represented by the formula (IV-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 an alkene having 2 to 5 carbon atoms. The groups, 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 it is suitably combined in view of the low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (IV-2) is dependent on low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, dropping trace, afterimage, dielectric anisotropy, and the like. It is suitable to adjust the performance requested. 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. For better content, for example, 1 to 15% by mass, 2 to 15% by mass, 5 to 15% by mass, 8 to 15% by mass, 2 to 15% by mass, 5 to 15% by mass, and 8 to 15 can be exemplified. Mass%, 1 to 4% by mass, 3 to 7% by mass, or 7 to 13% 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 formulae (19.1) to (19.8), wherein the compound represented by the formula (19.2) The compound is preferred.

The molecular weight distribution of the compound selected as a component of the liquid crystal composition is also effective for solubility, and from the viewpoint of improving the solubility of the liquid crystal composition, for example, compound selection represented by the formula (19.1) or (19.2) 1 type, compound selected by formula (19.3) or (19.4) The compound represented by the formula (19.5) or the formula (19.6) is selected, and the compound represented by the formula (19.7) or (19.8) is selected as the compound of the first type, and these compounds are preferably combined as appropriate.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (19.4) or formula (19.3) is considered to be 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 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, more preferably 5% by mass or more and 15% by mass or less, and particularly preferably 7% by mass or more and 10% by mass or less.

In the liquid crystal composition containing the compound of the two types of the formula (i), the content of the compound represented by the above formula (19.4) or formula (19.3) is preferably 10 to 15%.

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

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

The type of compound that can be combined is not particularly limited, but it depends on the solubility at low temperature, transfer temperature, electrical reliability, and birefringence. Seeking performance and suitable combination. The type of the compound to be used is, for example, one type in one embodiment of the present invention. Or other embodiments of the present invention are two types. Furthermore, other embodiments of the present invention are three types. Furthermore, other embodiments of the present invention are of four types.

The content of the compound represented by the above formula (V) with respect to the total mass of the liquid crystal composition of the present invention is, for example, 2 to 40% by mass in one embodiment. Further, in another embodiment of the present invention, the content is 4 to 40% by mass. Further, in another embodiment of the present invention, the content is 7 to 40% by mass. Further, in another embodiment of the present invention, the content is 10 to 40% by mass. Further, in another embodiment of the present invention, the content is from 12 to 40% by mass. Further, in another embodiment of the present invention, the content is 15 to 40% by mass. Further, in another embodiment of the present invention, the content is 17 mass% to 40% by mass. Further, in another embodiment of the present invention, the content is from 18 to 40% by mass. Further, in another embodiment of the present invention, the content is 20 to 40% by mass. Further, 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 2 to 30% by mass based on the total mass of the liquid crystal composition of the present invention. Further, in another embodiment of the present invention, the content of the compound is 2 to 25% by mass. Further, in another embodiment of the present invention, the content of the compound is from 2 to 20% by mass. Further, in another embodiment of the present invention, the content of the compound is from 2 to 15% by mass. Further, in another embodiment of the present invention, the content of the compound is from 2 to 10% by mass. Further, in another embodiment of the present invention, the content of the compound is from 2 to 5% by mass. Further, other embodiments of the present invention are the aforementioned combinations The content of the substance is 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. .

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 is contained in an amount of 2% by mass or more and 10% by mass or less. Further, it is more preferably 3% by mass or more and 10% by mass or less, and more preferably 3% by mass or more and 7% by mass or less.

Further, the compound represented by the formula (V-1-1) is preferably a compound selected from the group consisting of compounds represented by the formula (20.1) to the formula (20.4), and is preferably represented by the formula (20.2). Compounds are preferred.

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. .

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 is contained in an amount of 1% by mass or more and 10% by mass or less. Preferably, 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 a compound selected from the group consisting of compounds represented by the formula (21.1) to the formula (21.3), and is preferably represented by the formula (21.1). Compounds are preferred.

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. .

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 is contained in an amount of 2% by mass or more and 15% by mass or less. Preferably, 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 a compound selected from the group consisting of compounds represented by the formula (22.1) to the formula (22.3), and is preferably represented by the formula (22.1). The compound is more preferred.

Alternatively, or in addition, 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 it is suitably combined in view of the low-temperature solubility, 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 other embodiments of the present invention are two or more types.

The content of the compound represented by the above formula (V-2) with respect to the total mass of the liquid crystal composition of the present invention is, for example, 2 to 40% by mass in one embodiment. Further, in another embodiment of the present invention, the content of the compound is from 4 to 40% by mass. Further, in another embodiment of the present invention, the content of the compound is from 7 to 40% by mass. Further, in another embodiment of the present invention, the content of the compound is from 10 to 40% by mass. In addition, In another embodiment of the present invention, the content of the compound is from 12 to 40% by mass. Further, in another embodiment of the present invention, the content of the compound is from 15 to 40% by mass. Further, in another embodiment of the present invention, the content of the compound is from 17 to 40% by mass. Further, in another embodiment of the present invention, the content of the compound is from 18 to 40% by mass. Further, in another embodiment of the present invention, the content of the compound is from 20 to 40% by mass. Further, 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. Further, in another embodiment of the present invention, the content of the compound is 2 to 25% by mass. Further, in another embodiment of the present invention, the content of the compound is from 2 to 20% by mass. Further, in another embodiment of the present invention, the content of the compound is from 2 to 15% by mass. Further, in another embodiment of the present invention, the content of the compound is from 2 to 10% by mass. Further, in another embodiment of the present invention, the content of the compound is from 2 to 5% by mass. Further, in another embodiment of the present invention, the content of the compound is from 2 to 4% by mass.

In the case where the liquid crystal composition of the present invention has a high Tni embodiment, it is preferable to form a plurality of compounds represented by the above formula (V-2), and it is preferable to use a low viscosity embodiment. It is better.

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. .

Further, the compound represented by the above formula (V-2-1) is preferably a compound selected from the group consisting of compounds represented by the formula (23.1) to the formula (23.4), and the formula (23.1), and Or, a compound represented by the formula (23.2) is preferred.

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

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

The compound represented by the above formula (V-2-2) is preferably contained in an amount of 2% by mass or more and 16% by mass or less based on the total mass of the liquid crystal composition of the present invention, and is contained in an amount of 3% by mass or more and 13% by mass or less. Preferably, it is preferably 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 the formulae (24.1) to (24.4), and the formula (24.1), and Or, a compound represented by the formula (24.2) is preferred.

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

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

The kind of the compound which can be combined is not particularly limited, but is suitably combined in view of the low-temperature solubility, 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 other embodiments of the present invention are two types. Furthermore, other embodiments of the present invention are 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 based on the total mass of the liquid crystal composition of the present invention, and is contained in an amount of 4% by mass or more and 16% by mass or less. Preferably, 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 a compound selected from at least one of the group of compounds represented by the formula (25.1) to the formula (25.3).

Or / in addition, the aforementioned use of the liquid crystal composition of the present invention The compound represented by the formula (V) 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. Preferably, 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-4) is preferably at least one compound selected from the group consisting of compounds represented by the formulae (25.11) to (25.13), and the compound represented by the formula (25.13) is preferably Better.

Or / in addition, the aforementioned use of the liquid crystal composition of the present invention The compound represented by the formula (L) 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 is contained in an amount of 2% by mass or more and 15% by mass or less. Preferably, it is preferably 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 the compounds represented by the formula (25.21) to the formula (25.24), and the formula (25.21) and/or the formula. The compound represented by (25.23) is more preferred.

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

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

The type of the compound which can be combined is not particularly limited, but in view of the low-temperature solubility, transfer temperature, electrical reliability, birefringence and the like, it is preferred that one or three kinds of the compounds are blended. It is more preferable to contain 1 to 4 types, and it is particularly preferable to contain 1 to 5 types.

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

As the compound represented by the above formula (VI), specifically The listed compounds can be preferably 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 linear chain having 4 to 10 carbon atoms. Alkenyl.

The type of the compound which can be combined is not particularly limited, but in view of the low-temperature solubility, the transfer temperature, the electrical reliability, the birefringence, and the like, the 1-3 types which are appropriately selected for blending in the compound are Preferably, it is more preferable to blend 1 to 4 types, and it is particularly preferable to contain 1 to 5 types or more.

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

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

The liquid crystal composition of the present invention further preferably 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 pass through -CH=CH-, -C≡C-, -O-, -CO-, -COO- or -OCO-substitution, PM represents 0, 1, 2, 3 or 4, and C ^M1 and C ^M2 each independently represent a group selected from the group consisting of The group: (d) 1,4-cyclohexylene (the one present in this group -CH ₂ - or the two or more non-contiguous -CH ₂ - may be substituted with -O- or -S-) And (e) 1,4-phenylene (one of which is present in the group -CH= or two or more non-contiguous -CH= may be substituted with -N=), the above-mentioned group (d) And the group (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-, PM is 2, 3 or 4 and K ^M1 is a plurality of cases, The same may be different, PM is 2, 3 or 4 and C ^M2 is a plurality of cases, and they may be the same or different, and X ^M1 and X ^M3 each independently represent a hydrogen atom or a chlorine atom. Or a fluorine atom, X ^M2 represents a hydrogen atom, a fluorine atom, a chlorine atom, or a cyano group. , trifluoromethyl, fluoromethoxy, difluoromethoxy, trifluoromethoxy or 2,2,2-trifluoroethyl. However, the compound represented by the above formula (i) is excluded.

The kind of the compound which can be combined is not particularly limited, but it is suitably used in combination depending on 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. Or the invention Other embodiments are two types. Furthermore, other embodiments of the present invention are three types. Further, another embodiment of the present invention is of four types. Furthermore, other embodiments of the present invention are of five types. Furthermore, other embodiments of the present invention are six types. Furthermore, other embodiments of the present invention are seven or more types.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (M) is required to correspond to low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, dripping trace, afterimage, It is suitable to adjust the properties required for dielectric anisotropy and the like.

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. 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 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 40 to 95% by mass. For example, in still another embodiment of the present invention, the content of the compound is 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 55 to 95% by mass. For example, in still another embodiment of the present invention, the content of the compound is 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 70 to 95% by mass. E.g 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 80 to 95% by mass.

In addition, 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, 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 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.

In the case where the liquid crystal composition having the low viscosity of the liquid crystal composition of the present invention is low and the reaction rate is fast, it is necessary to set the lower limit value to a low value and the upper limit value to be a low value. good. In addition, it is necessary to maintain a liquid crystal composition having a high Tni of the liquid crystal composition of the present invention and having good temperature stability, and to set the lower limit value to a low value and to set the upper limit value to a low value. It is better. Further, in order to maintain the dielectric anisotropy in order to keep the driving voltage low, it is preferable to set the lower limit value to a high value and to set the upper limit value to a high value.

R ^M1 is a case where the ring to which the bond is bonded is a phenyl group (aromatic), a linear alkyl group having 1 to 5 carbon atoms, a linear alkoxy group having 1 to 4 carbon atoms, and carbon The alkenyl group having 4 to 5 atoms is preferred, and the ring structure of the bond is cyclohexane, megbrane and In the case of a saturated ring structure such as an alkane, it is 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 Alkenyl is preferred.

In the case where the compound represented by the formula (M) is required to satisfy the chemical stability of the liquid crystal composition, it is preferred that the compound does not have a chlorine atom in the molecule. Further, the content of the compound having a chlorine atom in the liquid crystal composition is preferably 0 to 5% by mass, more preferably 0 to 3% by mass, and 0 to 1% by mass based on the total mass of the liquid crystal composition of the present invention. Preferably, 0 to 0.5% by mass is preferred, and substantially no content is preferred. The substance is not substantially contained in the liquid crystal composition, and only a compound containing an unintended chlorine atom such as a compound formed as an impurity in the production of the compound is mixed.

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

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

The type of the compound which can be combined is not particularly limited, but may be suitably used in combination depending on the desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one type in one embodiment of the present invention. Or the invention thereof He implemented two types of morphology. Furthermore, other embodiments of the present invention are three or more types.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (VIII) is required to depend on low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, dripping marks, afterimage, and It is suitable to adjust the properties required for dielectric anisotropy and the like.

The content of the compound represented by the above formula (VIII) is, for example, 2 to 40% by mass based on 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 4 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is 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 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 14 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is 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, the present invention In still another embodiment, the content of the compound is from 23 to 40% by mass.

Further, the content of the above compound is, for example, 2 to 30% 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 2 to 25% by mass. In still another embodiment of the present invention, the content of the compound is 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 2 to 5% by mass.

In the case where the liquid crystal composition having the low viscosity of the liquid crystal composition of the present invention is low and the reaction rate is fast, it is necessary to set the lower limit value to a low value and the upper limit value to be a low value. good. In addition, it is necessary to maintain a liquid crystal composition having a high Tni of the liquid crystal composition of the present invention and having good temperature stability, and to set the lower limit value to a low value and to set the upper limit value to a low value. It is better. Further, in order to maintain the dielectric anisotropy in order to keep the driving voltage low, it is preferable to set the lower limit value to a high value and to set the upper limit value to a high value.

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

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

The kind of the compound which can be combined is not particularly limited, but it is suitably used in combination depending on 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. Or other embodiments of the present invention are two or more types.

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

The content of the compound represented by the above formula (26.1) is 1% by mass or more and 20% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. The following is preferable, and 1% by mass or more and 15% by mass or less is more preferable, and 1% by mass or more and 10% by mass or less is more preferable, and 1% by mass or more and 7% by mass or less is particularly preferable. 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% by mass or more can be exemplified. Below mass%.

In particular, the liquid crystal composition containing one type of the compound represented by the general formula (i) preferably contains a compound represented by the formula (26.1), and the content thereof is preferably from 3 to 14%, more preferably from 4 to 10%. Good, 5~7% is better.

The content of the compound represented by the above formula (26.2) is considered in consideration of solubility at low temperature, transfer temperature, electrical reliability, birefringence, etc. 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 1% by mass or more and 25% by mass or less, and still more preferably 1% by mass or more and 20% by mass or less. It is particularly preferable that the mass% is 18% by mass or more. In a particularly preferable range, for example, 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% by mass or more and 12% by mass or less. 6% by mass or more and 9% by mass or less, 6% by mass or more and 8% by mass or less, 7% by mass or more and 12% by mass or less, 8% by mass or more and 11% by mass or less, 3% by mass or more and 7% by mass or less, and 5% by mass or less The above 10% by mass or less and 12% by mass or more and 18% by mass or less are preferable.

In particular, in the liquid crystal composition containing three kinds of compounds represented by the general formula (i), the content of the compound represented by the formula (26.2) is preferably from 1 to 14%, more preferably from 1 to 10%, and from 2 to 8 % is better.

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 1 to 30% by mass, preferably 1 to 25% by mass based on the total mass of the liquid crystal composition of the present invention. For better, 1 to 20% by mass is more preferable. 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% by mass or more can be exemplified. 5% by mass or less, 1% by mass or more and 2% by mass or less, 5% by mass or more and 10% by mass or less, 6% by mass or more and 10% by mass or less, 6% by mass or more and 9% by mass or less, 6% by mass or more and 8% by mass or less, and 85% by mass or less and 85% by mass or less. The mass% or more is 12% by mass or less, 7 mass% or more and 12 mass% or less, 9 mass% or more and 14 mass% or less, and 12 mass% or more and 18 mass% or less.

Alternatively, or in addition, the compound represented by the above formula (VIII) is The compound represented by the formula (VIII-2) is preferred.

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

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

The content of the compound represented by the above formula (VIII-2) is considered to be 2.5% 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 birefringence. 25 mass% or less is preferable, 8 mass% or more and 25 mass% or less are preferable, 10 mass% and 20 mass% or less are preferable, and 12 mass% or more and 15 mass% or less are preferable.

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

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

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

The kind of the compound which can be combined is not particularly limited, but it is suitably used in combination depending on 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. Or other embodiments of the present invention are two or more types.

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

Alternatively, or in addition, 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 that can be combined is not limited, but considering the dissolution at low temperature It is preferable to combine one type or two types or more, such as a property, a transfer temperature, an electrical reliability, and a birefringence.

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 is 2 to 2 in other embodiments. In another embodiment, the content of the compound is 3 to 13% by mass, and in other embodiments, the content of the compound is 3 to 10% by mass. 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 at least one compound selected from the group consisting of compounds represented by the formulae (26.21) to (26.24). Preferably, the compound represented by 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 represented. A hydrogen atom or a fluorine atom, Y ⁹ represents a fluorine atom, a chlorine atom or -OCF ₃ , and U ⁹ represents a single bond, -COO- or -CF ₂ O-.

The kind of the compound which can be combined is not particularly limited, but it is suitably used in combination depending on 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. Or other embodiments of the present invention are two types. Furthermore, other embodiments of the present invention are three types. Further, another embodiment of the present invention is of four types. Further, another embodiment of the present invention is of five types. Further, another embodiment of the present invention 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) is required to depend on low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, dripping marks, afterimage, It is suitable to adjust the properties required for dielectric anisotropy and the like.

The content of the compound represented by the above formula (IX) is, for example, 2 to 70% by mass in terms of 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 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 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 20 to 70% by mass. For example, in still other embodiments of the present invention, the content of the aforementioned compound It is 24 to 70% by mass. 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 above compound is, for example, 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, it 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.

In the case where the liquid crystal composition having the low viscosity of the liquid crystal composition of the present invention is low and the reaction rate is fast, it is necessary to set the lower limit value to a low value and the upper limit value to be a low value. good. In addition, when the liquid crystal composition of the liquid crystal composition of the present invention is kept high and the liquid crystal composition which is hard to cause image sticking is necessary, the lower limit value is set to a low value, and the upper limit value is made low. Preferably. Further, in order to maintain the dielectric anisotropy in order to keep the driving voltage low, it is preferable to set the lower limit value to a high value and to set the upper limit value to a high value.

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

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

The kind of the compound which can be combined is not particularly limited, but it is suitably used in combination depending on 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. Or other embodiments of the present invention are two types. Further, other embodiments of the present invention are three types. Further, another embodiment of the present invention 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 kind of the compound which can be combined is not particularly limited, but it is suitably used in combination depending on 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. Or other embodiments of the present invention are two types. Furthermore, other embodiments of the present invention are three or more types.

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

The content of the compound represented by the above formula (IX-1-1) is, for example, 1 to 15% by mass based on the total mass of the liquid crystal composition of the present invention. Further, for example, in another embodiment of the present invention, the content of the compound is 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, the content of the compound represented by the above formula (IX-1-1) with respect to the total mass of the liquid crystal composition of the present invention is, for example, the present invention. In one embodiment, it is 2 to 17% by mass. In still 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 5 to 10% by mass. In still another embodiment of the present invention, the content of the compound is 6 to 10% by mass. In still another embodiment of the present invention, the content of the compound is 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 5 to 8% by volume. 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 a compound selected from the group consisting of compounds represented by the formulas (28.1) to (28.5), and is preferably represented by the formula (28.5). The compound is preferred.

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 preferably 3% by mass or more, based on the total mass of the liquid crystal composition. 5 mass% or more is preferable, 7 mass% or more is preferable, 10 mass% or more is preferable, 14 mass% or more is preferable, and 16 mass% or more is preferable. On the other hand, in consideration of low-temperature solubility, nematic phase-isotropic liquid phase transfer temperature, electrical reliability, and the like, the content of the compound represented by the formula (i) in the liquid crystal composition is relative to the total of the liquid crystal composition. The mass is preferably 30% by mass or less, preferably 25% by mass or less, more preferably 22% by mass or less, more preferably 20% by mass or less, more preferably 19% by mass or less, and most preferably 15% by mass or less. 12% by mass or less is preferable, 10% by mass or less is preferable, 8% by mass or less is preferable, and less than 5% by mass is preferable. 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, and from 1 to 25% by mass, based on the total mass of the liquid crystal composition of the present invention. Preferably, 1 to 19% by mass is preferred, 1 to 8% by mass is preferred, 2 to 6% by mass is preferred, 3 to 8% by mass is preferred, and 5 to 15% by mass is preferred, and 5 to 11% by mass is preferred. The mass % is preferable, 7 to 12 mass% is preferable, 7 to 20 mass% is preferable, 7 to 18 mass% is preferable, and 11 to 16 mass% is preferable.

The liquid crystal composition containing the three kinds of compounds represented by the general formula (i) preferably contains a compound represented by the formula (28.3), and the content thereof is preferably 15 to 25%, more preferably 15 to 20%. 15~18% is better.

In the liquid crystal composition of the present invention, the content of the compound represented by the above formula (28.5) is 1% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. The above 25 mass% or less is preferable, and 1 mass% or more and 20 mass% or less are more preferable, and 1 mass% or more and 15 mass% or less are more preferable, and 1 mass% or more and 10 mass% or less are especially preferable. In the above, 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, 6% by mass or more and 10% by mass or less, and 7% 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 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 more. It is preferably 5% by mass or less, 5% by mass or more and 8% by mass or less, and preferably 6% by mass or more and 9% by mass or less.

In particular, the liquid crystal composition containing one type of the compound represented by the general formula (i) contains a compound represented by the formula (28.5), and the content thereof is preferably from 1 to 20%, preferably from 1 to 15%. Good, 1~10% is better and 2~5% is especially good.

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 limited. However, in view of low-temperature solubility, transfer temperature, electrical reliability, and birefringence, it is preferred to combine one to three types, and it is more preferable to combine one to four types.

The content of the compound represented by the above formula (IX-1-2) is 1% by mass or more and 30% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. % or less is preferably 5% by mass or more and 30% by mass or less, preferably 8% by mass or more and 30% by mass or less, more preferably 10% by mass or more and 25% by mass or less, and most preferably 14% by mass or more and 22% by mass or less. Preferably, it is 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), and formula (29.2), and Or a compound represented by the formula (29.4) is preferred.

Alternatively, or in addition, the compound represented by the above formula (IX) is The compound represented by the formula (IX-2) is preferred.

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 that can be combined is not limited, but it is preferably used in combination in each embodiment in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. For example, one embodiment of the present invention is one type, and two types in other embodiments, and three types in other embodiments, and four types in still other embodiments, and five other types in other embodiments. Still other embodiments are combinations of six or more types.

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.

There are no restrictions on the types of compounds that can be combined, but considering the solubility at low temperature, transfer temperature, electrical reliability, birefringence, etc., combinations 1~3 The type is preferred.

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

For example, in one embodiment of the present invention, the content of the compound represented by the above formula (IX-2-1) is from 1 to 40% by mass based on the total mass of the liquid crystal composition of the present invention. In other embodiments, the content of the compound is 2 to 40% by mass. In still another embodiment, the content of the compound is 4 to 40% by mass. In still another embodiment, the content of the compound is 10 to 40% by mass. In still another embodiment, the content of the compound is 14 to 40% by mass. In still another embodiment, the content of the compound is 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 is further The embodiment is 1 to 25% by mass, and in still other embodiments, it is 1 to 22% by mass, and in still other embodiments, it is 1 to 20% by mass, and in still other embodiments, 1 to 10% by mass. Still other embodiments are 1 to 7 mass%, and still other embodiments are 1 to 5 mass%.

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 formulas (30.1) to (30.4), and the formula (30.1) and/or The compound represented by the formula (30.2) is preferred.

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 that can be combined is not limited, but in view of low-temperature solubility, transfer temperature, electrical reliability, and birefringence, a combination of 1 to 3 types is preferable, and a combination of 1 to 4 types is more preferable.

The content of the compound represented by the above formula (IX-2-2) can be appropriately adjusted in 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. 1 to 25% by mass, and other embodiments are 1 to 20% by mass, and in other embodiments, 1 to 15% by mass, and in other embodiments, 1 to 11% by mass, and other embodiments. The embodiment is 1 to 10% by mass, and in other embodiments, it is 1 to 9% by mass, and in still other embodiments, it is 1 to 8% by mass, and in still other embodiments, 2 to 9% by mass. Still other embodiments are 7 to 10% by mass, and in still other embodiments, 5 to 8 mass%, and still other embodiments are 8 to 11 mass%. In still other embodiments, it is 3 to 12% by mass.

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

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 based on the total mass of the liquid crystal composition of the present invention, and is preferably 1% by mass or less. % or less is preferable, and 1% by mass or more and 20% by mass or less is preferable, and 1% by mass or more and 15% by mass or less is preferable. In these, for example, 1% by mass or more and 14% by mass or less, 2% by mass or more and 9% by mass or less, and 4% by mass or more and 10% or more It is preferable that it is 5% by mass or less, 5% by mass or more and 8% by mass or less, and 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 based on the total mass of the liquid crystal composition of the present invention, and is preferably 1% by mass or 15% by mass. % or less is preferable, and 1% by mass or more and 5% by mass or less is preferable, and 2% by mass or more and 5% by mass or less is preferable.

The liquid crystal composition containing the two kinds of compounds represented by the general formula (i) preferably contains a compound represented by the formula (31.4), and the content thereof is preferably from 1 to 10%, more preferably from 1 to 5%.

The liquid crystal composition containing the compound of the formula (3) and the compound represented by the formula (31.4) is preferably a total of 1 to 15%. For better, 3~10% is better.

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

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

The type of the compound that can be combined is not limited, but in view of low-temperature solubility, transfer temperature, electrical reliability, birefringence, and the like, it is preferred to combine 1 to 2 types.

The content of the compound represented by the above formula (IX-2-3), In view of the low temperature solubility, the transfer temperature, the electrical reliability, and the like, the total mass of the liquid crystal composition of the present invention is preferably 1% by mass or more and 30% by mass or less, more preferably 3% by mass or more and 20% by mass or less. It is more preferably 6 mass% or more and 15 mass% or less, and more preferably 8 mass% or more and 10 mass% or less.

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

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

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

The content of the compound represented by the above formula (IX-2-4) is 1% by mass or more and 30% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. % or less is more preferable, and 3 mass% or more and 20 mass% or less are more preferable, and 6 mass% or more and 15 mass% or less are more preferable, and 8 mass% or more and 10 mass% or less are especially preferable.

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

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.

There are no restrictions on the types of compounds that can be combined, but considering the solubility at low temperature, transfer temperature, electrical reliability, birefringence, etc. The form can be suitably used in combination. For example, one embodiment of the present invention is one type, and two types in other embodiments, and three types in other embodiments, and four or more types in still other embodiments.

The content of the compound represented by the above formula (IX-2-5) can be appropriately adjusted in each embodiment in consideration of characteristics 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. 2 to 25% by mass, and other embodiments are 5 to 25% by mass, and in still other embodiments, 5 to 20% by mass, and still other embodiments are 5 to 8% by mass, and still other embodiments. It is 8 to 20% by mass, and in still other embodiments, it is 1 to 10% by mass, and in still other embodiments, it is 1 to 4% by mass.

In the case where the liquid crystal composition having the low viscosity of the liquid crystal composition of the present invention is low and the reaction rate is fast, it is necessary to set the lower limit value to a low value and the upper limit value to be a low value. good. In addition, it is necessary to keep the liquid crystal composition of the liquid crystal composition of the present invention high and it is difficult to cause image sticking, and to set the lower limit value to a low value and to set the upper limit value to a low value. Preferably. Further, in order to maintain the dielectric anisotropy in order to keep the driving voltage low, it is preferable to set the lower limit value to a high value and to set the upper limit value to a high value.

Further, the compound represented by the formula (IX-2-5) is preferably a compound selected from the group consisting of compounds represented by the formulae (34.1) to (34.7), and the formula (34.1) and the formula (3) The compound represented by 34.2), formula (34.3) and/or formula (34.5) is more preferred.

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

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

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

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

The type of the compound that can be combined is not limited, but in view of low-temperature solubility, transfer temperature, electrical reliability, birefringence, and the like, it is preferred to combine 1 to 2 types.

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

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

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

In the above formula (IX-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, 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-4) is preferably a compound represented by the formula (IX-4-1).

In the above formula (IX-4-1), 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 that can be combined is not limited, but in view of low-temperature solubility, transfer temperature, electrical reliability, birefringence, and the like, it is preferred to combine 1 to 2 types.

The content of the compound represented by the above formula (IX-4-1) is 1% by mass or more and 16% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. % or less is preferable, and 2% by mass or more and 13% by mass or less is preferable, and 3% by mass or more and 10% by mass or less is preferable.

Further, the compound represented by the formula (IX-4-1) is preferably at least one compound selected from the group consisting of the compounds represented by the formulae (35.11) to (35.14), and the formula (35.11) and/or The compound represented by the formula (35.12) is preferred.

Alternatively, or in addition, 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 a group of any of the following formulas, but a hydrogen atom on the 1,4-phenyl group may be substituted with a fluorine atom.

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

The content of the compound represented by the above formula (X) can be appropriately adjusted in 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 to 45 mass in the other embodiment. % is 6 to 45% by mass in other embodiments, and 8 to 45% by mass in other embodiments, and 9 to 45% by mass in other embodiments, and 11 to 45 in other embodiments. The mass % is 12 to 45% by mass in other embodiments, and 18 to 45% by mass in other embodiments, and 19 to 45% by mass in other embodiments, and in still other embodiments. ~45% by mass, and in still other embodiments, the content is 25 to 45% by mass.

Further, for example, the content of the compound represented by the above formula (X) is 2 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 is 2 to 2 in other embodiments. 30% by mass, and in other embodiments, 2 to 25% by mass, and yet other embodiments 2 to 20% by mass, and 2 to 13% by mass in other embodiments, and 2 to 9% by mass in other embodiments, and 2 to 6% by mass in other embodiments. The embodiment is 2 to 3% by mass.

In the case where the liquid crystal composition having the low viscosity of the liquid crystal composition of the present invention is low and the reaction rate is fast, it is necessary to set the lower limit value to a low value and the upper limit value to be a low value. good. Further, in the case where a liquid crystal composition in which image sticking is hard to occur is necessary, it is preferable to set the lower limit value to a low value and to set the upper limit value to a low value. Further, in order to maintain the dielectric anisotropy in order to keep the driving voltage low, it is preferable to set the lower limit value to a high value and to set the upper limit value to a high value.

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

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

The compound which can be combined is not limited, but it can be suitably combined in each embodiment in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. For example, one embodiment of the present invention is one type. Further, another embodiment of the present invention is of two types. In still other embodiments, there are three types. In addition, there are four other types of embodiments. And other implementations The morphology 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 is 3 to 40% in other embodiments. 40% by mass, in other embodiments, 5 to 40% by mass, and in other embodiments, 6 to 40% by mass, and still other embodiments are 7 to 40% by mass, and still other embodiments are 8 ~40% by mass, and other embodiments are 9 to 40% by mass, and in other embodiments, 13 to 40% by mass, and still other embodiments are 18 to 40% by mass, and still other embodiments. It is 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, and other embodiments are 2 to 20% by mass, and other embodiments are 2 to 15% by mass, and in other embodiments, 2 to 10% by mass, and other implementations are performed. The morphology is 2 to 6 mass%, and in still other embodiments, it is 2 to 4 mass%.

Further, 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 limited, but is preferably combined in consideration of solubility at low temperature, transfer temperature, electrical reliability, birefringence, and the like. For example, one embodiment of the present invention is one type. Further, another embodiment of the present invention is of two types. In still other embodiments, there are three types. In still another embodiment, four or more types are used.

The content of the compound represented by the above formula (X-1-1) is appropriately adjusted in consideration of characteristics 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 in other embodiments. 4 to 30% by mass, and other embodiments are 6 to 30% by mass, and in other embodiments, 9 to 30% by mass, and still other embodiments are 12 to 30% by mass, and still other embodiments. It is 15 to 30% by mass, and in other embodiments, it is 18 to 30% by mass, and in still other embodiments, 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 carried out in another embodiment. The morphology is 3 to 13% by mass, and in other embodiments, it is 3 to 10% by mass, and in still other embodiments, it is 3 to 7% by mass.

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

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 in other embodiments. 1 to 15% by mass, in other embodiments, 1 to 10% by mass, and in other embodiments, 1 to 6% by mass, and in other embodiments, 1 to 4% by mass, and in other embodiments, 1 to 4% by mass. 3 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 carried out in other embodiments. The morphology is 4 to 10% by mass, and in still other embodiments, it is 6 to 10% by mass.

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

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 limited, and it is preferable to combine one type or two or more types in consideration of low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

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

Further, 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 carried out in other embodiments. The morphology is 5 to 20% by mass, and in other embodiments, 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 selected from at least one of the group of compounds represented by the formula (38.1) to the formula (38.4). A compound is preferred, and a compound represented by the formula (38.2) is preferred.

The liquid crystal composition of the present invention is represented by the above formula (38.2) The content of the compound is preferably 1% by mass or more and 20% by mass or less based on the total mass of the liquid crystal composition of the present invention, preferably 1% by mass or less and 15% by mass or less, and preferably 1% by mass or more and 10% by mass or less. Preferably, it is preferably 1% by mass or more and 8% by mass or less, more preferably 3% by mass or more and 6% by mass or less, and most preferably 4% by mass or more and 6% by mass or less.

It is preferred to use a compound represented by the formula (38.2) for a liquid crystal composition containing one type of the compound represented by the formula (i).

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 limited, but it is preferable to combine one type or two types or more in consideration of low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

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

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

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

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

In addition, the compound represented by the above formula (X-2-1) used in the liquid crystal composition of the present invention is specifically selected from at least one of the group of compounds represented by the formula (39.1) to the formula (39.4). The compound is preferably 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 based on the total mass of the liquid crystal composition of the present invention, and is preferably 1% by mass or 16% by mass. % or less is preferable, and 1% by mass or more and 12% by mass or less is preferable, and 3% by mass or more and 10% by mass or less is preferable. 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. 10% by mass is preferred, and 5 to 8% by mass is preferred.

It is preferred to use a compound represented by the formula (39.2) for a liquid crystal composition containing one type of the compound represented by the formula (i).

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 limited, but it is preferable to combine one type or two types or more in consideration of low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

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

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

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

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

The compound which can be combined is not particularly limited. In view of solubility at low temperature, transfer temperature, electrical reliability, birefringence, and the like, it is preferred to combine one type or two types or more.

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

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 limited, but it is preferable to combine one type or two types or more in consideration of low-temperature solubility, 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 0.5 to 10% by mass based on the total mass of the liquid crystal composition of the present invention, and is in other embodiments. 0.5 to 8 mass%, in other embodiments, 0.5 to 6 mass%, and in other embodiments, 0.5 to 4 mass%, and in other embodiments, 0.5 to 2 mass%.

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

In particular, a liquid crystal composition containing one type of the compound represented by the general formula (i) is preferably a compound represented by the formula (41.2), and a content of 0.5 to 1% is preferred.

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 limited, and it is preferable to combine one type or two types or more in combination with low-temperature solubility, transfer temperature, electrical reliability, birefringence, etc., and it is more preferable to combine three or more types.

Further, 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 limited, and it is preferable to combine one type or two types or more in combination with low-temperature solubility, transfer temperature, electrical reliability, birefringence, etc., and it is more preferable to combine three or more types.

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 based on the total mass of the liquid crystal composition of the present invention, and is preferably 5% by mass or more and 17% by mass or less. Preferably, it is 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.

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

The liquid crystal composition containing one kind of the compound represented by the general formula (i) preferably contains the above formula (42.3), and the content thereof is preferably from 1 to 10%, more preferably from 1 to 5%.

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 limited, and it is preferable to combine one type or two types or more in combination with low-temperature solubility, transfer temperature, electrical reliability, birefringence, etc., and it is more preferable to combine three or more types.

The content of the compound represented by the above formula (X-4-2) is 2% by mass or more and 20% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. % below Preferably, it is preferably 5% by mass or more and 17% by mass or less, more 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.

In addition, the compound represented by the above formula (X-4-2) used in the liquid crystal composition of the present invention is specifically selected from at least one of the group of compounds represented by the formula (42.11) to the formula (42.14). The compound is preferably a compound represented by the formula (42.13) and/or the 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 limited, but it is preferable to combine one type or two types or more in combination with low-temperature solubility, transfer temperature, electrical reliability, birefringence, etc., and it is preferable to combine three types.

The content of the compound represented by the above formula (X-4-3) is 2% by mass or more and 20% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. % or less is preferably 5% by mass or more and 17% by mass or less, preferably 10% by mass or more and 15% by mass or less, and preferably 10% by mass or more and 13% by mass or less.

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

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 alkyl group having 1 to 4 carbon atoms. Oxygen.

The compound which can be combined is not limited, and it is preferable to combine one type or two types or more in combination with low-temperature solubility, transfer temperature, electrical reliability, birefringence, etc., and it is more preferable to combine three or more types.

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

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

The compound that can be combined is not limited, but considering the dissolution at low temperature The combination of one type or two types or more is preferable, and it is more preferable to combine three or more types, such as a property, a transfer temperature, an electrical reliability, and a birefringence.

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

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 limited, but it is preferable to combine one type or two types or more in consideration of low-temperature solubility, 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 is 1 to 30% in other embodiments. 25% by mass, in other embodiments, 1 to 20% by mass, and in other embodiments, 1 to 15% by mass, and in other embodiments, 2 to 14% by mass, and still other embodiments are 2~ 12% by mass, and other embodiments are 2 to 9% by mass, and in other embodiments, 2 to 8% by mass, and in other embodiments, 2 to 6% by mass, and still other embodiments. 2 to 5 mass%, and other embodiments are 3 to 14 mass%, and in other embodiments, 5 to 14 mass%, and in other embodiments, 7 to 14 mass%, and other implementations. The morphology is 8 to 14% by mass, and in other embodiments, it is 9 to 14% by mass, and in other embodiments, it is 9 to 12% by mass, and in other embodiments, it is 3 to 8% by mass. The other embodiment is 3 to 6 mass%, and in still other embodiments, 4 to 7 mass%, and in other embodiments, 4 to 5 mass%, and other embodiments are performed. The state is 5 to 8 mass%, and in other embodiments, it is 5 to 6 mass%, and in other embodiments, it is 7 to 8 mass%, and in other embodiments, it is 8 to 9 mass%.

In addition, 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 contains a formula ( Compounds represented by 44.1) and/or formula (44.2) are preferred.

The liquid crystal composition containing 2 to 3 kinds of the compound represented by the general formula (i) is preferably a compound represented by the formula (44.1) and a compound represented by the formula (44.2).

In the liquid crystal composition containing the compound of the two types of the formula (i), the total content of the compound represented by the formula (44.1) and the compound represented by the formula (44.2) is preferably 5 to 15%, preferably 6 to 12 % is better.

In the liquid crystal composition containing the compound of the formula (4), the total content of the compound represented by the formula (44.1) and the compound represented by the formula (44.2) is preferably 8 to 16%, preferably 10 to 14 % is better and 12 to 14% is especially good.

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

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 limited, but it is preferable to combine one type or two types or more in consideration of low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (X'-7) is considered. It is suitably adjusted in terms of characteristics 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'-7) is 4 to 30% 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 is 5 in another embodiment. ~30% by mass, in other embodiments, 6 to 30% by mass, and in other embodiments, 8 to 30% by mass, and still other embodiments are 9 to 30% by mass, and still other embodiments are 11 to 30% by mass, and other embodiments are 14 to 30% by mass, and in other embodiments, 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. The content of the above compound is 4 to 13% by mass, and in still other embodiments, the content of the compound is 4 to 10% by mass, and in still other embodiments, 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 selected from at least one compound of the group of compounds represented by the formula (44.11) to the formula (44.14). Preferably, the 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 limited, but it is preferable to combine one type or two types or more in consideration of low-temperature solubility, 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 is 1 to 2% in other embodiments. 20% by mass, in other embodiments, 1 to 15% by mass, and in other embodiments, 1 to 10% by mass, and in other embodiments, 1 to 5% by mass, and still other embodiments are 1~ 3 mass%.

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

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 limited, but considering the dissolution at low temperature It is preferable to combine one type or two types or more, such as a property, a transfer temperature, an electrical reliability, and a birefringence.

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 is 1 to 2% in other embodiments. 20% by mass, in other embodiments, 1 to 15% by mass, and in other embodiments, 1 to 10% by mass, and in other embodiments, 1 to 5% by mass, and still other embodiments are 1~ 3 mass%.

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

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

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 a carbon atom number. 2 to 5 alkenyl or alkoxy having 1 to 4 carbon atoms, and Y ¹¹ represents a fluorine atom or -OCF ₃ .

The compound which can be combined is not limited, but it is considered to have a low temperature solubility, a transfer temperature, an electrical reliability, a birefringence, etc., for example, one embodiment of the present invention is one type, and other embodiments are two types. In other embodiments, it is preferred to combine 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 4 to 30% by mass in the other embodiment. % is 5 to 30% by mass in other embodiments, and 7 to 30% by mass in other embodiments, and 9 to 30% by mass in other embodiments, and 10 to 30 in other embodiments. The mass % is 12 to 30% by mass in other embodiments, and 13 to 30% by mass in other embodiments, and 15 to 30% by mass in other embodiments, and still in other embodiments. ~30% by mass.

Further, for example, the content of the compound represented by the above formula (XI) is 2 to 25% 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 still another embodiment 2 ~20% by mass, and other embodiments are 2 to 15% by mass, and in still other embodiments, 2 to 10% by mass, and still other embodiments are 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 liquid crystal cell gap, it is suitable to use a plurality of compounds represented by the above formula (XI). When it is used for a liquid crystal display element having a small driving voltage, it is suitable to use a plurality of compounds represented by the above formula (XI). Further, in the case of a liquid crystal display element used in a low-temperature environment, the content of the compound represented by the above formula (XI) is used. The few are suitable. In the case of a liquid crystal composition of a liquid crystal display element having a fast reaction rate, it is suitable to make the content of the compound represented by the above formula (XI) small.

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 limited, but it can be suitably combined in 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 combined, and in still other embodiments, three types or more are combined.

The content of the compound represented by the above formula (XI-2) is 1% by mass or more and 20% by mass or less based on the total mass of the liquid crystal composition of the present invention in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. Preferably, it is preferably 3 mass% or more and 20 mass% or less, more preferably 4 mass% or more and 20 mass% or less, more preferably 6 mass% or more and 15 mass% or less, and 9 mass% or more and 12 mass% or less. good.

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

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

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

The compound which can be combined is not limited, and it is preferable to combine 1-3 or more types in combination with low-temperature solubility, transfer temperature, electrical reliability, birefringence, etc., and it is more preferable to combine 1-4 or more types.

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 limited, but in view of low-temperature solubility, transfer temperature, electrical reliability, and birefringence, it is preferred to combine 1 or 2 types or more, and more preferably 1 to 3 types.

The content of the compound represented by the above formula (XII-1) is 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 consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. It is preferably 2% by mass or more and 10% by mass or less, more preferably 3% by mass or more and 8% by mass or less, and most 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 a compound selected from the group consisting of at least one compound represented by the formula (46.1) to the formula (46.4). Preferably, at least one compound selected from the group consisting of compounds represented by formula (46.2) to formula (46.4) is preferred.

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 limited, and it is preferable to combine one type or two types or more in combination with low-temperature solubility, transfer temperature, electrical reliability, birefringence, etc., and it is more preferable to combine one type to three or more types.

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

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

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

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

The type of the compound which can be combined is not particularly limited, but among the compounds containing these, 1 to 2 are preferred, and 1 to 3 are more preferred, and 1 to 4 are more preferred.

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 in one embodiment of the present invention, and 4 to 30% in the other embodiment, based on the total mass of the liquid crystal composition of the present invention. % is 5 to 30% by mass in other embodiments, and 7 to 30% by mass in other embodiments, and 9 to 30% by mass in other embodiments, and 11 to 30 in other embodiments. The mass % is 13 to 30% by mass in other embodiments, and 14 to 30% by mass in other embodiments, and 16 to 30% by mass in other embodiments, and in still other embodiments. ~30% by mass.

Further, for example, the content of the compound represented by the above formula (XIII) is 2 to 25% by mass based on the total mass of the liquid crystal composition of the present invention, and in still other embodiments, The content of the compound is 2 to 20% by mass, and in still other embodiments, the content of the compound is 2 to 15% by mass, and in still other embodiments, the content of the compound is 2 to 10% by mass. In 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 liquid crystal cell gap, it is suitable to use a plurality of compounds represented by the above formula (XIII). In the case of a liquid crystal display element having a small driving voltage, it is suitable to use a plurality of compounds represented by the above formula (XIII). Moreover, in the case of being used for a liquid crystal display element used in a low-temperature environment, it is suitable to make the content of the compound represented by the above formula (XIII) small. In the case of a liquid crystal composition of a liquid crystal display element having a fast reaction rate, it is suitable to make the content of the compound represented by the above formula (XIII) small.

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 preferably 3% by mass or more and 25% by mass or less. 5% by mass or more and 20% by mass or less is preferable, and 10% by mass or more is contained. 15% by mass or less is preferred.

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 formulae (48.1) to (48.4), and the compound represented by the formula (48.2) is preferably Preferably.

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, but contain Among these compounds, 1 to 2 or more of them are preferred.

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. Preferably, 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 based on the total mass of the liquid crystal composition of the present invention, and is contained in an amount of 3% by mass or more and 6% by mass or less. The amount is 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 consisting of compounds represented by the formulae (49.1) to (49.4), and the formula (49.1) and/or the formula ( The compound represented by 49.2) is preferred.

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

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

The kind of the compound which can be combined is not particularly limited, but one or two kinds of the compounds containing these are preferable.

The compound represented by the above formula (XIII-3) is preferably contained in an amount of 2% by mass or more and 20% by mass or less based on the total mass of the liquid crystal composition of the present invention, and more preferably 4% by mass or more and 20% by mass or less. 9% by mass or more and 17% by mass or less is preferable, and 11% by mass or more is contained. 14% by mass or less is preferred.

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

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 (XIV).

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

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

The content of the compound represented by the above formula (XIV) is appropriately adjusted in consideration of characteristics 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 to 40% by mass in other embodiments. % is 8 to 40% by mass in other embodiments, and 11 to 40% by mass in other embodiments, and 12 to 40% by mass in other embodiments, and 16 to 40 in other embodiments. The mass % is 18 to 40% by mass in other embodiments, and 19 to 40% by mass in other embodiments, and 22 to 40% by mass in other embodiments, and in still other embodiments. ~40% by mass.

Further, for example, a compound represented by the above formula (XIV) The content is 3 to 35 mass% in one embodiment of the present invention, and 3 to 30 mass% in other embodiments, and 3 to 25 in other embodiments. The mass % is in other embodiments of 3 to 20% by mass, and in still other embodiments, it is 3 to 15% by mass.

When the liquid crystal composition of the present invention is used for a liquid crystal display element having a small driving voltage, the content of the compound represented by the above formula (XIV) is preferably a plurality. Further, in the case of using a liquid crystal composition of a liquid crystal display element having a fast reaction rate, it is suitable to make the content of the compound represented by the above formula (XIV) small.

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

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

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

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 2% by mass or more and 30% by mass based on the total mass of the liquid crystal composition of the present invention, and is another embodiment. 4% by mass or more and 30% by mass, and other embodiments are 7% by mass or more and 30% by mass or less, and in still other embodiments, 10% by mass or more and 30% by mass or less, and still other embodiments are 18% by mass or more. 30% by mass or less.

Further, for example, the content of the compound represented by the above formula (XIV-1) is 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. The embodiment 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 selected from at least one compound selected from the group consisting of the compounds represented by the formulae (51.1) to (51.4), and contains the formula (51.1). The compound represented is more preferred.

Alternatively, or in addition, the compound represented by the formula (XIV-1) is preferably a compound represented by the formula (XIV-1-2).

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

The content of the compound represented by the above formula (XIV-1-2) is 1% by mass or more and 15% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. % or less is preferable, and 3 mass% or more and 13 mass% or less are preferable, and 5 mass% or more and 11 mass% or less are preferable, and 7 mass% or more and 9 mass% or less are preferable.

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

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

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

The type of the compound that can be combined is not limited, but it can be appropriately combined in each embodiment in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. For example, one embodiment of the present invention is one type. Further, other embodiments of the present invention are two types. Or, in this Still other embodiments of the invention are three types. Further, still another embodiment of the present invention is of four types. Alternatively, in still another embodiment of the present invention, five or more types are used.

The content of the compound represented by the above formula (XIV-2) 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 3 to 40% by mass based on the total mass of the liquid crystal composition of the present invention, and is 7 to 40% in other embodiments. 40% by mass, in other embodiments, 8 to 40% by mass, and in other embodiments, 10 to 40% by mass, and still other embodiments are 11 to 40% by mass, and still other embodiments are 12 ~40% by mass, and other embodiments are 18 to 40% by mass, and in other embodiments, 19 to 40% by mass, and still other embodiments are 21 to 40% by mass, and still other embodiments. 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% by mass based on the total mass of the liquid crystal composition of the present invention, and is another embodiment. 3 to 25% by mass, and other embodiments are 3 to 20% by mass, and in other embodiments, 3 to 15% by mass, and still other embodiments are 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, it is suitable to use a plurality of compounds represented by the above formula (XIV-2). Further, in the case of a liquid crystal composition of a liquid crystal display element having a fast reaction speed, it is represented by the above formula (XIV-2) The content of the compound is preferably as small as possible.

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

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

The content of the compound represented by the above formula (XIV-2-1) is 1% by mass or more and 15% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. % or less is preferable, and 3 mass% or more and 13 mass% or less are preferable, and 5 mass% or more and 11 mass% or less are preferable, and 7 mass% or more and 9 mass% or less are preferable.

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

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

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

The content of the compound represented by the above formula (XIV-2-2) is 3 mass% or more and 20 mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. % or less is preferably 5% by mass or more and 17% by mass or less, preferably 5% by mass or more and 15% by mass or less, and preferably 5% by mass or more and 9% by mass or less.

The liquid crystal composition containing one type of the compound represented by the general formula (i) preferably contains two kinds of compounds represented by the general formula (XIV-2-2). Their content is preferably 10-20%, and 12-17% is better.

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

Further, in the case where two kinds of compounds represented by the formula (XIV-2-2) are contained, the compound represented by the formula (54.4) and the compound represented by the formula (54.2) are preferably used, and represented by the formula (54.1). The compound represented by the formula (54.2) is also preferred.

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 based on the total mass of the liquid crystal composition of the present invention, and is preferably 5% by mass. % or less is preferably 5% by mass or more and 22% by mass or less, more 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, and particularly preferably 6% by mass or more and 9% by mass or less. It is better.

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

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

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

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

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

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

The type of the compound that can be combined is not limited, but it can be appropriately combined in each embodiment in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. For example, one embodiment of the present invention is one type. Further, other embodiments of the present invention are two types. Alternatively, in still another embodiment of the present invention, three or more types are used.

The content of the compound represented by the above formula (XIV-2-4) can be appropriately adjusted in each embodiment in consideration of characteristics 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 in other embodiments, 1 to 15% by mass, in other embodiments, 1 to 10% by mass, and still other embodiments, 1 to 9% by mass, and still other embodiments, 1 to 3% by mass, and still other embodiments , 6~9 mass%.

When the liquid crystal composition of the present invention is used for a liquid crystal display device having a small driving voltage, it is suitable to use a plurality of compounds represented by the above formula (XIV-2-4). Further, in the case of using a liquid crystal composition of a liquid crystal display element having a fast reaction rate, it is preferable to make the content of the compound represented by the above formula (XIV-2-4) small.

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

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

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

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

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

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

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

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

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

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

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

The kind of the compound which can be combined is not particularly limited, but it can be suitably used in combination depending on the desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one type in one embodiment of the present invention. Or other embodiments of the present invention are two or more types.

The content of the compound represented by the above formula (XIV-3) is considered to be 2.5% 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 birefringence. 25 mass% or less is preferable, and 3 mass% or more and 15 mass% or less are preferable, and 3% by mass or more and 10 mass% or less are preferable.

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), and formula (61.1) And / or a compound represented by the formula (61.2) is more preferable.

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 of any one of the following formulas, but a hydrogen atom on the 1,4-phenylene group may be substituted with a fluorine atom.

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

The content of the compound represented by the above formula (XV) can be appropriately adjusted in 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 to 30 by mass in other embodiments. % is 3 to 30% by mass in other embodiments, and 6 to 30% by mass in other embodiments, and 9 to 30% by mass in other embodiments, and 11 to 30 in other embodiments. The mass % is 12 to 30% by mass in other embodiments, and 18 to 30% by mass in other embodiments, and 19 to 30% by mass in other embodiments, and in still other embodiments. ~30% by mass, and in other embodiments, 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 0.5 to 25% in other embodiments. 20% by mass, and in other embodiments, 0.5 to 13% by mass, The application form is 0.5 to 9 mass%, and in still other embodiments, it is 1 to 6 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 limited, but it is preferable to combine one type or two types or more in consideration of low-temperature solubility, 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 is 1 to 2% in other embodiments. 20% by mass, in other embodiments, 1 to 10% by mass, and in other embodiments, 3 to 10% by mass, and in still other embodiments, 4 to 7% by mass, and still other embodiments are ~5 mass%, and in other embodiments, 5-10 mass%.

Further, the compound represented by the formula (XV-1) used in the liquid crystal composition of the present invention is specifically selected from the formula (59.1) to the formula (59.4). At least one compound of the group of compounds represented is preferred, and a compound represented by formula (59.2) is more preferred.

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 limited, but one type or two types are combined in consideration of solubility at low temperature, transfer temperature, electrical reliability, birefringence, and the like. The above is preferred.

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 to be 0.5 mass in terms of the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, birefringence and the like. More preferably, it is more preferably 20% by mass or less, more preferably 1% by mass or more and 15% by mass or less, more preferably 1% by mass and 10% by mass or less, and preferably 1% by mass or less by 4% by mass or less.

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

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 limited, but it is preferable to combine one type or two types or more in consideration of low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

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, and the like. Characteristics, and suitable for adjustment.

For example, the content of the compound represented by the above formula (XV-3) is 0.5% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. The above 20% by mass or less is preferable, and 1% by mass or more and 15% by mass or less is preferable, and 1% by mass or more and 10% by mass or less is preferable, and 1% by mass or less by 5% by mass or less is preferable.

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

Alternatively, or in addition, 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 limited, but it is preferable to combine one type or two types or more in consideration of low-temperature solubility, 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 0.5% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. The above 20% by mass or less is preferable, and 1% by mass or more and 15% by mass or less is preferable, and 1% by mass and 10% by mass or less is preferable, and 1% by mass or less by 4% by mass or less is preferable.

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

Alternatively, or in addition, 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.

The compound which can be combined is not limited, but it is preferable to combine one type or two types or more in consideration of low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the above formula (XVI) 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 (XVI) is considered to be solubility at low temperature, transfer temperature, electrical reliability, and birefringence. The total mass of the liquid crystal composition of the present invention 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, and most preferably 1% by mass or less and 10% by mass or less. 1% by mass and 4% by mass or less is preferred.

Further, the compound represented by the formula (XVI) 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). It is preferable to contain a compound represented by the formula (66.2).

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

In the case of the reliability of the liquid crystal composition and the long-term stability, the content of the compound having a carbonyl group is preferably 5% by mass or less based on the total mass of the composition, and more preferably 3% by mass or less. % below is better and substantially not included as the best.

Pay attention to the situation of the stability of UV irradiation, chlorine atom The content of the compound is preferably 15% by mass or less, more preferably 10% by mass or less, more preferably 5% by mass or less, and most preferably not contained, based on the total mass of the composition.

It is preferable to form a compound having a 6-membered ring structure in the molecule, and the content of the compound having a ring structure of 6 members in the molecule is 80% by mass or more based on the total mass of the composition. It is more preferably 90% by mass or more, more preferably 95% by mass or more, and most preferably a compound having a ring structure of substantially 6 in the molecule, which constitutes a liquid crystal composition.

In order to suppress deterioration due to oxidation of the liquid crystal composition, 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 relative to the above composition The total mass is preferably 10% by mass or less, more preferably 5% by mass or less, and substantially no more.

In the case where the improvement of the viscosity and the improvement of the Tni are emphasized, it is preferable to make the content of the compound having a 2-methylbenzene-1,4-diyl group in which a hydrogen atom can be substituted with a halogen, and the above is preferable in the molecule. The content of the compound of 2-methylbenzene-1,4-diyl is preferably 10% by mass or less based on the total mass of the above-mentioned composition, more preferably 5% by mass or less, and substantially no content is preferable. .

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

In 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 liquid crystal composition of the present invention may contain a polymerizable compound. For the polymerizable compound which can be used, a photopolymerizable monomer which is polymerized by an energy ray such as light can be exemplified, and as a structure, for example, a six member having a biphenyl derivative or a triphenyl derivative can be exemplified. The ring is a polymerizable compound of a liquid crystal skeleton which is plurally linked, and the like. More specifically, a difunctional monomer represented by the formula (XX) is preferred.

In the above formula (XX), X ²⁰¹ and X ²⁰² each independently represent a hydrogen atom or a methyl group, and Sp ²⁰¹ and Sp ²⁰² each independently represent a single bond, an alkylene group having 1 to 8 carbon atoms or -O-(CH _{2 ). s} - (wherein, s represents an integer of 2 to 7, an oxygen atom is bonded to an 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 substituted by a fluorine atom. .

Any one of a diacrylate derivative in which one of X ²⁰¹ and X ²⁰² represents a hydrogen atom, or a dimethacrylate derivative having a methyl group is preferred, and one of them represents a hydrogen atom and the other A compound representing a methyl group is also preferred. The rate of polymerization of these compounds is the fastest in diacrylate derivatives, the slowest in dimethacrylate derivatives, and the middle of asymmetric compounds, depending on the application. Dimethacrylate derivatives are particularly preferred for PSA display elements.

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 at least one of the PSA display elements is preferably a single bond. A single-bonded compound or one of which represents a single bond and the other is an alkylene group having 1 to 8 carbon atoms or -O-(CH ₂ ) _s - is preferred. In this case, an alkyl group having 1 to 4 carbon atoms is preferred, and an s system of 1 to 4 is preferred.

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

M ²⁰¹ represents a 1,4-phenylene group, a trans-1,4-cyclohexylene group or a single bond in which any hydrogen atom may be substituted by a fluorine atom, but a 1,4-phenylene group or a single bond is preferred. . M ²⁰¹ represents a ring structure other than a single bond, and a linking group other than the Z ²⁰¹ single bond is preferable, and M ²⁰¹ is a single bond, and a Z ²⁰¹ single bond is preferable.

From the viewpoints of the above, the ring structure between the general formula (XX), Sp ²⁰¹ and Sp ²⁰² is specifically the structure described below.

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

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

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

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

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

In the case where a monomer is added to the liquid crystal composition of the present invention, the polymerization proceeds even if the polymerization initiator is not present, but a polymerization initiator may be contained in order to promote the polymerization. The polymerization initiator may, for example, be a benzoin ether, a benzophenone, an acetophenone, a benzil ketal or a hydrazine. Acylphosphine oxides and the like.

The liquid crystal composition in 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 more of the CH ₂ groups in the alkyl group are not directly bonded to the oxygen atom. Adjacent means, which may be substituted by -O-, -CH=CH-, -CO-, -OCO-, -COO-, -C≡C-, -CF ₂ O-, -OCF ₂ -, and M ^Q represents Formula - 1,4-cyclohexylene, 1,4-phenylene, or a single bond.

R ^Q represents a linear alkyl group or a branched alkyl group having 1 to 22 carbon atoms, and one or more of the CH ₂ groups in the alkyl group may be via -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 -, but a linear alkyl group having 1 to 20 carbon atoms a linear alkoxy group, a linear alkyl group in which one CH ₂ group is substituted with -OCO- or -COO-, a branched alkyl group, a branched alkoxy group, and one CH ₂ group is substituted a branched alkyl group of -OCO- or -COO- is preferably a linear alkyl group having 1 to 10 carbon atoms, and a CH ₂ group having ₁ group substituted with a linear alkyl group of -OCO- or -COO- More preferably, the branched alkyl group, the branched alkoxy group, and the CH ₂ group of one is 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, but a trans-1,4-cyclohexylene group or a 1,4-phenylene group is preferred.

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

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 a linear alkyl group or a branched alkyl group having 1 to 20 carbon atoms. Preferably, R ^Q3 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 the L ^Q group has a carbon number of 1 to 8 A chain alkyl group or a branched chain alkyl group is preferred.

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

<Liquid crystal display element>

A liquid crystal composition containing the polymerizable compound of the present invention is used for The liquid crystal display element in which the polymerizable compound contained in the polymerizable polymer is polymerized under ultraviolet irradiation to impart a liquid crystal alignment ability and to control the amount of light transmitted by the birefringence of the liquid crystal composition. As for the liquid crystal display element, it can be used for ECB-LCD, VA-LCD, FFS-LCD, AM-LCD (active matrix liquid crystal display element), TN (nematic liquid crystal display element), STN-LCD (twisted nematic) A liquid crystal display element), an OCB-LCD, and an IPS-LCD (planar conversion liquid crystal display element), but particularly used in an AM-LCD, can be used for a transmissive or reflective liquid crystal display element.

For the two substrates of the liquid crystal cell used for the liquid crystal display element, glass or a soft and transparent material such as plastic may be used, or one of them may be 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.

For example, a color filter can be produced by a pigment dispersion method, a printing method, an electrodeposition method, a dyeing method, or the like. A method of producing a color filter by a pigment dispersion method will be described as an example. A curable coloring composition for a color filter is applied onto the transparent substrate, and a pattern forming process is performed, and heating or light irradiation is performed. And make it hard. This step can be performed as a color element for a color filter by performing three colors of red, green, and blue. Further, a pixel electrode provided with an active element such as a TFT or a thin film diode may be provided on the substrate.

The substrate is oriented such that the transparent electrode layer is inside. At this time, the interval between the substrates can also be adjusted by the spacer. At this time, it is preferable to adjust the thickness of the obtained light control layer to 1 to 100 μm. 1.5 to 10 μm is better, in the case of using a polarizing plate, the contrast becomes the most It is preferable to adjust the product of the refractive index anisotropy Δn of the liquid crystal and the thickness d of the liquid crystal cell in a large manner. Further, in the case of two polarizing plates, the polarizing axes of the respective polarizing plates can be adjusted to adjust the viewing angle or contrast to be good. Further, a phase difference film for increasing the viewing angle can also be used. The spacer may, for example, be a columnar spacer including glass particles, plastic particles, alumina particles, a photoresist material, or the like. Thereafter, a sealant such as an epoxy thermosetting composition is screen-printed on the substrate in a shape in which a liquid crystal injection port is provided, and the substrates are bonded to each other to heat and 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 or ODF method. However, although the vacuum injection method does not cause a dripping mark, there is a problem that the injected trace remains, but in the present invention, it can be preferably used for a display element manufactured by the ODF method. In the manufacturing process of the liquid crystal display element of the ODF method, in the substrate of either the backplane or the frontplane, the epoxy-based photothermal heat is used together with a sealant such as curability, and a dispenser is used to close the circuit. In the soil-like drawing, after the quantitative liquid crystal composition is dropped under degassing, a liquid crystal display element can be manufactured by bonding the front plate and the back plate. Since the liquid crystal composition of the present invention is stably carried out by dropping the liquid crystal composition in the ODF step, it can be preferably used.

In the method of polymerizing a polymerizable compound, in order to obtain a good alignment property of a liquid crystal, an appropriate polymerization rate is desired, and polymerization is carried out by irradiating an active energy ray such as ultraviolet rays or electron beams in a single or in combination or sequentially. The method is preferred. In the case of using ultraviolet rays, a polarized light source or a non-polarized light source may be used. Polymerization When the compound liquid crystal composition is polymerized in a state of being sandwiched between two substrates, at least the substrate on the irradiation surface side must have appropriate transparency for the active energy ray. Further, when a specific portion is polymerized by using a mask after light irradiation, the alignment state of the unpolymerized portion is changed by changing conditions such as an electric field, a magnetic field, or a temperature, and further, polymerization can be performed by using an irradiation active energy ray. s method. 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, and a frequency of 60 Hz to 10 kHz is more preferable, and the voltage is selected in accordance with a desired pre-tilt 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 element of the transverse electric field type MVA mode, it is preferable to control the pretilt angle to 80 to 89.9 degrees from the viewpoint of alignment stability and contrast.

The temperature at the time of irradiation is preferably in a temperature range in which the liquid crystal state of the liquid crystal composition of the present invention is maintained. The polymerizer is preferred at a temperature close to room temperature, i.e., typically at a temperature of from 15 to 35 °C. As the lamp for causing ultraviolet rays, a metal halide lamp, a high pressure mercury lamp, an ultrahigh pressure mercury lamp, or the like can be used. Further, in terms of the wavelength of the ultraviolet ray to be irradiated, it is preferred to irradiate the ultraviolet ray in the wavelength region of the absorption wavelength region of the non-liquid crystal composition, and it is preferable to use the ultraviolet ray to remove the ultraviolet ray. The intensity of the ultraviolet ray to be irradiated is preferably 0.1 mW/cm ² to 100 W/cm ^{2 , more} preferably 2 mW/cm ² to 50 W/cm ² . The energy of the ultraviolet ray to be irradiated can be appropriately adjusted, but it is preferably 10 mJ/cm ² to 500 J/cm ^{2 , more} preferably 100 mJ/cm ² to 200 J/cm ² . When the ultraviolet rays are irradiated, the intensity can be changed. The time for irradiating the ultraviolet rays is appropriately selected depending on the intensity of the ultraviolet rays to be irradiated, but 10 seconds to 3600 seconds is preferable, and 10 seconds to 600 seconds is more preferable.

The liquid crystal display element using the liquid crystal composition of the present invention is useful for both high-speed reaction and display deterioration, and is particularly useful for active matrix drive liquid crystal display elements, and is applicable to VA mode, PSVA mode, PSA mode, and IPS. (in-plane switching) mode, FSS (fringe field switching) mode, or liquid crystal display element for ECB mode.

Hereinafter, preferred embodiments of the liquid crystal display device 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 element including two substrates facing each other, a sealing material provided between the substrates, and a liquid crystal sealed in a sealing region surrounded by the sealing material.

Specifically, a liquid crystal display element is provided, and a TFT layer 102 and a pixel electrode 103 are provided on the first substrate 100, and a passivation film 104 and a first alignment film 105 are provided thereon. The second substrate 200 is provided with a black matrix 202, a color filter 203, a planarization film (overcoat layer) 201, a transparent electrode 204, and a second alignment film 205 is disposed thereon. a front plate facing the backing plate, a sealing member 301 disposed between the substrates, and a liquid crystal layer 303 sealed in a sealing region surrounded by the sealing member, and provided on a substrate surface adjacent to the sealing member 301 Protrusions (columnar spacers) 302, 304.

The first substrate or the second substrate may be substantially transparent, and the material is not particularly limited, and glass, ceramics, plastic, or the like can be used. For plastic substrates, cellulose, triacetyl cellulose can be used. a cellulose derivative such as diacetyl cellulose; a polyester such as a polycycloolefin derivative, polyethylene terephthalate or polyethylene naphthalate; a polyolefin such as polypropylene or polyethylene; , polycarbonate, polyvinyl alcohol, polyvinyl chloride, polyvinylidene chloride, polyamide, polyimine, polyamidamine, polystyrene, polyacrylate, polymethyl methacrylate As the polyether oxime or polyarylate compound, an inorganic-organic composite material such as glass fiber-epoxy resin, glass fiber-acrylic resin or the like can be used.

When a plastic substrate is used, a barrier film is preferably used. The function of the barrier film has the reliability of lowering the moisture permeability of the plastic substrate and improving 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. In general, an inorganic material such as cerium oxide is used by vapor deposition or sputtering, and chemical vapor deposition. A film formed by a (CVD method).

In the present invention, the same material or the same material may be used as the first substrate or the second substrate, 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 manufacturing a roll-to-roll process and is suitable for weight reduction or flexibility. Moreover, for the purpose of imparting flatness and heat resistance, good results can be obtained when a plastic substrate and a glass substrate are combined.

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

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

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

Further, the first alignment film 105 is a film having a function of aligning liquid crystals, and a polymer material such as a general polyimine is often used. As the coating liquid, an alignment agent solution containing a polymer material and a solvent can be used. The alignment film is coated in the sealing region due to the possibility of suppressing the adhesion to the sealing material. The coating method is a printing method such as a flexographic printing method or a droplet discharge method such as inkjet. The coated alignment agent solution is cured by temporary drying and evaporation of the solvent, followed by baking. Thereafter, the alignment process is performed in order to make the alignment function.

The alignment treatment is carried out by a usual rubbing method. On the polymer film formed as described above, a flat-grinding cloth made of fibers such as enamel is used, and the liquid crystal alignment ability is generated by one side rubbing.

Also, there are also those who use the optical alignment method. The photo-alignment method is a method in which a polarizing light is irradiated onto an alignment film containing an organic material having photoreceptivity to cause an alignment ability to occur, and substrate damage or dust generation by a rubbing method does not occur. As an example of the organic material in the photo-alignment method, there is a material containing a dichroic dye. In the case of a dichroic dye, a molecular alignment-induced or heterogeneous reaction (for example, azophenyl) or a dimerization reaction (for example, cinnamyl) having a Weigert effect due to photochromism can be used. A photocrosslinking reaction (for example, a benzophenone group) or a photodecomposition reaction (for example, a polyfluorenylene group) produces a photoreactive group which is a source of liquid crystal alignment ability (hereinafter, abbreviated as photoalignment) base). The coated alignment agent solution is temporarily dried and the solvent is evaporated, and the irradiation has an arbitrary bias. Under the light (polarized light), an alignment film having an alignment ability in any direction can be obtained.

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

The black matrix 202 is produced by, for example, a pigment dispersion method. Specifically, on the second substrate 200 provided with the barrier film 201, a colored resin liquid in which a black coloring agent for black matrix formation 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. Thereafter, 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. In this case, a photoresist type pigment dispersion liquid is applied, and after prebaking, it is exposed by a mask pattern, and then developed to form a colored layer. Thereafter, 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 color resin liquid in which a pigment (for example, a red pigment) is uniformly dispersed is applied onto the second substrate 200, and after baking curing, the upper surface is coated with a photoresist and pre-baked. After the photoresist is exposed through the mask pattern, development is performed to form a pattern. Thereafter, the photoresist layer is peeled off and baked again to complete the (red) color filter 203. 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 disposed on the color filter 203 (due to It is necessary to provide a jacket layer (201) on the color filter 203 for surface flattening. The transparent electrode 204 is preferably one having a high light transmittance, and the smaller one is preferably a smaller one. The transparent electrode 204 is formed of an oxide film of ITO or the like by a sputtering method.

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.

Although the above description of the back sheet and the front sheet used in the present invention is described above, the present invention is not limited to the specific embodiment, and the change of the aspect of the liquid crystal display element is free.

The shape of the columnar spacer is not particularly limited, and the horizontal cross section may be formed into various shapes such as a circular shape, a square shape, or the like, but the horizontal cross section is rounded in consideration of a misaligned margin during the process. Or positive polygons are particularly good. Further, the shape of the projection 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 not dissolved in the sealing material or the sealing material. However, from the viewpoint of processing and weight reduction, synthetic resin (hardening) Resin) is preferred. On the other hand, the protrusions may be provided on the surface adjacent to the sealing material on the first substrate by a gravure printing method or a solution dropping method. For this reason, it is preferred to use a photocurable resin suitable for the method of gravure printing or the solution dropping method.

The case where the columnar spacer is obtained by the gravure printing method will be described as an example. Figure 2 is used as a mask pattern The columnar spacer formed on the black matrix is patterned as a pattern exposure process.

A resin liquid for forming a columnar spacer (excluding a colorant) is applied to the transparent electrode 204 of the front plate. Next, the resin layer 402 is baked and hardened. The photoresist is coated thereon and pre-baked. After the photoresist is exposed through the mask pattern 401, development is performed to pattern the resin layer. Thereafter, 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 determines the desired position depending on the mask pattern. Therefore, both the inside of the sealing region of the liquid crystal display element and the outside of the sealing region (the sealing material coating portion) can be simultaneously formed. Further, the column spacer is preferably formed on the black matrix so as not to lower the quality of the sealing region. The column spacers thus produced by gravure printing are sometimes referred to as column spacers or photo spacers.

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

In this manner, after the columnar spacer is provided on the surface of the front plate which is the sealing region, the sealing material is applied to the surface adjacent to the sealing material of the backing plate (301 in Fig. 1).

The material of the sealing material is not particularly limited, and it can be used for epoxy-based or acrylic-based photocuring, thermosetting, and photo-heat curing. A curable resin composition of a polymerization initiator is added to the resin. Further, in order to control moisture permeability, elastic modulus, viscosity, and the like, a filler derived from an inorganic substance or an organic substance may be added. The shape of these fillers is not particularly limited and may be spherical, fibrous, amorphous or the like. Further, in order to control the cell gap well, a spherical or fibrous spacer having a monodisperse diameter may be mixed, and in order to further strengthen the adhesion to the substrate, a fibrous substance which is easily entangled with the protrusion on the substrate may be mixed. The diameter of the fibrous material used at this time is about 1/5 to 1/10 of the cell gap, and it is desirable that the length of the fibrous material is shorter than the seal coating width.

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

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

The liquid crystal is dropped into the closed circuit shape (sealing region) of the front plate to which the sealing material is applied. A dispenser is usually used. The amount of liquid crystal to be dropped is basically the same as the volume of the product of the height of the columnar spacer and the sealed coated area in order to match the volume of the liquid crystal cell. However, in order to optimize liquid crystal leakage or display characteristics in the step of bonding the liquid crystal cells, the amount of liquid crystal dropped may be appropriately adjusted or the liquid crystal dropping position may be dispersed.

Next, the front plate of the liquid crystal is applied by applying the sealing material, and bonding to the back sheet. Specifically, it has an electrostatic fixture (electrostatic chuck), the front plate and the back plate are adsorbed on the stage of the mechanism for adsorbing the substrate, and the second alignment film of the front plate faces the first alignment film of the back plate, and is disposed on the sealing material and the other The position (distance) where the substrate is not adjacent. In this state, the system is depressurized. After the decompression is completed, the positions of the two substrates are adjusted while adjusting the bonding position between the front plate and the back plate (calibration operation). At the end of the adjustment of the bonding position, the substrate is brought close to the position where the sealing material on the front plate abuts the backing plate. In this state, the inert gas is filled in the system, and the pressure is gradually released while returning to the normal pressure. At this time, the front plate and the back plate are bonded together by the atmospheric pressure, and the cell gap is formed at the height position of the column spacer. In this state, the sealing material is irradiated with ultraviolet rays and the sealing material is cured to form a liquid crystal cell. Thereafter, the heating step is added as appropriate and the sealing material is allowed to harden. In order to enhance the adhesion of the sealing material or to improve the reliability of the electrical characteristics, a heating step is often added.

[Examples]

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

In the examples, the measured characteristics are as follows.

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

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

△ ε: dielectric anisotropy in 298K

η: viscosity in 293K (mPa.s)

Rotational viscosity (mPa.s) in γ1:298K

VHR: frequency holding rate (%) at 333K under the condition of a voltage of 60 Hz and a voltage of 5 V

VHR after the heat resistance test: TEG (test element group) for evaluating the optical optical properties of the liquid crystal composition sample was held 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 performed after the predetermined fixed pattern is displayed in the display area for an arbitrary test time, and the test time until the image sticking of the fixed pattern at the time of uniform display of the full screen reaches an unacceptable image sticking degree is measured.

1) The test time referred to herein means the display time of the fixed pattern. When this time is long and the occurrence of residual image is suppressed, the performance is higher.

2) The degree of image sticking that cannot be tolerated refers to the degree of residual image that is observed as unacceptable under the judgment of passing or not.

Drop the trace:

The evaluation of the dripping trace of the liquid crystal display device was carried out in the following five stages of evaluation by visually observing the dripping traces of the whitening in the case of full black display.

5: no traces of dripping (excellent)

4: Only a few traces of dripping are acceptable (good)

3: Only the trace of the drop, the limit 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, very poor (poor)

Process suitability:

Process suitability is based on the ODF process, using a fixed metering pump every 1 time Add 50 pL of liquid crystal to each drop, and measure the mass of each 100 drops of liquid crystal at every 100 drops of "0 to 100 times, 101 to 200 times, 201 to 300 times, ....", and the quality deviation is achieved. Can not be suitable for evaluation of the low number of ODF processes.

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

Low temperature solubility:

Evaluation of Solubility at Low Temperature After modulating the liquid crystal composition, 1 g of the liquid crystal composition was weighed in a 2 mL sample vial, and in the temperature-controlled test tank, the following operation state was continued to be continued at -20 ° C (for 1 hour) → temperature rise (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 (for 1 hour) → Temperature drop (-0.1 ° C / min) → -20 ° C" As a temperature change in one cycle, the occurrence of precipitates from the liquid crystal composition was visually observed, and the test time when the precipitate was observed was measured.

The longer the test time, the longer the liquid crystal phase can be stably maintained over a long period of time, and the solubility at low temperatures is good.

Volatile/manufacturing device contamination:

The volatility evaluation of the liquid crystal material was carried out by using a strobooscope to observe the operation state of the vacuum stirring defoaming mixer, and visualizing the foaming of the liquid crystal material. Specifically, the vacuum stirring defoaming mixer having a capacity of 2.0 L was used. the special container 0.8kg into the liquid crystal composition, at 4kPa degassed, the revolution speed at 15S ^-1, rotation rate 7.5S ^-1, mixing and degassing operation in vacuo mixer, to the measurement of time starts foaming.

The longer the time from the start of foaming, the more difficult it is to volatilize, and the pollution manufacturing equipment The reason for the low probability is shown as high performance.

(Examples 1 and 2, and Comparative Example 1)

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

The compositions prepared in Examples 1 and 2 were lower in viscosity (η/mPa·s and γ _{1 /} mPa·s) than the compositions prepared in Comparative Example 1, and were excellent in solubility at low temperatures, and For the residual image is suppressed.

(Examples 3 to 6)

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

(Examples 7 to 10)

The composition shown in Table 5 was prepared by the following compounds, and an IPS type liquid crystal display device having the structures shown in Figs. 1 and 2 was produced. Obtained group The evaluation results of the product and the liquid crystal display device are shown in Table 6.

(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 structures shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and the liquid crystal display device are shown in Table 8.

(Examples 15 to 18)

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

(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 structures shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and the liquid crystal display device are shown in Table 12.

(Examples 23 to 26)

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

(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 structures shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and the liquid crystal display device are shown in Table 16.

(Examples 31 to 34)

The composition shown in Table 17 was prepared using the compounds shown below. An IPS type liquid crystal display device having the structure shown in Figs. 1 and 2 is used. The evaluation results of the obtained composition and the liquid crystal display device are shown in Table 18.

(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 structures shown in Figs. 1 and 2 was produced. The evaluation results of the obtained composition and the liquid crystal display device are shown in Table 20.

(Examples 39 to 40)

The composition shown in Table 21 was prepared by the following compounds to prepare an IPS type liquid crystal display device having the structures shown in Figs. 1 and 2 . The evaluation results of the obtained composition and the liquid crystal display device are shown in Table 22.

(Examples 43 to 46)

The composition shown in Table 23 was prepared by the following compounds to prepare an IPS liquid crystal display device having the structures shown in Figs. 1 and 2 . The evaluation results of the obtained composition and the liquid crystal display device are shown in Table 24.

(Examples 47 to 50)

The composition shown in Table 25 was prepared by the following compounds to prepare an IPS liquid crystal display device having the structures shown in Figs. 1 and 2 . The evaluation results of the obtained composition and the liquid crystal display device are shown in Table 26.

(Examples 51 to 54)

The composition shown in Table 27 was prepared by the following compounds to prepare an IPS type liquid crystal display device having the structures shown in Figs. 1 and 2 . The evaluation results of the obtained composition and the liquid crystal display device are shown in Table 28.

(Examples 55 to 58)

The composition shown in Table 29 was prepared by the following compounds to prepare an IPS type liquid crystal display device having the structures shown in Figs. 1 and 2 . The evaluation results of the obtained composition and the liquid crystal display device are shown in Table 30.

(Examples 59 to 62)

The composition shown in Table 31 was prepared by the following compounds to prepare an IPS liquid crystal display device having the structures shown in Figs. 1 and 2 . The evaluation results of the obtained composition and the liquid crystal display device are shown in Table 32.

(Examples 63 to 66)

The composition shown in Table 33 was prepared by the following compounds to prepare an IPS type liquid crystal display device having the structures shown in Figs. 1 and 2 . The evaluation results of the obtained composition and the liquid crystal display device are shown in Table 34.

(Examples 67 to 70)

The composition shown in Table 35 was prepared by the following compounds to prepare an IPS liquid crystal display device having the structures shown in Figs. 1 and 2 . The evaluation results of the obtained composition and the liquid crystal display device are shown in Table 36.

[Industrial availability]

The liquid crystal composition having positive dielectric anisotropy of the present invention has good solubility at low temperature, and the specific resistance or voltage holding ratio is extremely small due to heat or light change, so that the product has high practicability and a liquid crystal display containing the same The component can achieve a high speed response. Further, in the manufacturing process of the liquid crystal display device, it is extremely useful because the liquid crystal composition can be stably dripped, and the display defect caused by the process can be suppressed to improve the yield.

Claims (43)

A liquid crystal composition comprising at least one compound represented by the following formula (i) and a compound represented by the following formula (ii); (wherein R ^{i1 is} represented by an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms). The liquid crystal composition of claim 1, which contains one or more compounds 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 - groups 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 composition selected from the group consisting of Group of groups, (a) 1,4-cyclohexylene (one of -CH ₂ - or two or more of -CH ₂ - which are not adjacent to this group may be substituted with -O-) and b) 1,4-phenylene (the one present in this group -CH= or two or more non-contiguous -CH= may be substituted with -N=), the above-mentioned group (a), group ( 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-, OL is 2 or 3 and L ^L2 is a plurality of cases, and they may be the same or different, OL is 2 or 3 and B ^L3 is a plurality of cases, and they may be the same or different. Except for the compounds represented by formula (ii). The liquid crystal composition of claim 1 or 2, which contains at least one compound represented by the following 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 - groups may be independently -CH=CH-, -C≡C -, -O-, -CO-, -COO- or -OCO-substitution, PM represents 0, 1, 2, 3 or 4, and C ^M1 and C ^M2 each independently represent a group selected from the group consisting of: ( d) 1,4-cyclohexylene (one of -CH ₂ - or two or more of -CH ₂ - not adjacent to this group may be substituted with -O- or -S-), and (e 1,4-phenylene (one of -CH= or two or more non-contiguous -CH= may be substituted by -N=), the above-mentioned base (d), base (e Each of them 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-, PM is 2, 3 or 4 and K ^M1 is a plurality of cases, they may be the same Alternatively, PM is 2, 3 or 4 and C ^M2 is a plurality of cases, and 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, fluoromethoxy, difluoromethoxy, trifluoromethoxy or 2,2,2-trifluoroethyl; but excluding compounds of formula (i) represents). The liquid crystal composition of claim 3, which contains a compound represented by the formula (X-2-1) as a compound represented by the formula (M), (wherein R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms). The liquid crystal composition of claim 2, which contains a compound selected from the group consisting of compounds represented by the formula (I-4) as a compound represented by the formula (L), (wherein 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). The liquid crystal composition of claim 2, which contains a compound represented by the following formula (IV) as a compound represented by the formula (L), (wherein R ⁴¹ and R ⁴² each independently represent an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and X ⁴¹ and X ⁴² each independently represent a hydrogen atom or a fluorine atom). The liquid crystal composition of claim 3, which contains a compound represented by the following formula (IX-2-2) as a compound represented by the formula (M), (wherein R ⁹ represents an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms). The liquid crystal composition of claim 2, which contains a compound selected from the group consisting of the compounds represented by the following formula (I-7) as a compound represented by the formula (L), (wherein R ¹¹ and R ¹² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and X ¹² each independently represents a fluorine atom. Or chlorine atom). The liquid crystal composition of claim 2, which comprises a compound selected from the group consisting of compounds represented by the following formula (II-1) as a compound represented by the formula (L), (R ²¹ and R ²² each independently represent an alkenyl group having 2 to 5 carbon atoms or 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 3, which contains a compound represented by the following formula (IX-1) as a compound represented by the formula (M), (wherein R ⁹ represents an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, X ⁹² represents a hydrogen atom or a fluorine atom, and Y ⁹ represents a fluorine atom or -OCF ₃ ). The liquid crystal composition of claim 3, which contains a compound represented by the following formula (XIV-2-2) as a compound represented by the formula (M), (wherein R ¹⁴ represents an alkyl group having 2 to 7 carbon atoms). The liquid crystal composition of claim 3, which contains a compound represented by the following formula (X-4) as a compound represented by the formula (M), (wherein 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 alkoxy group having 1 to 4 carbon atoms). The liquid crystal composition of claim 3, which contains a compound represented by the following formula (X-1-3) as a compound represented by the formula (M), (wherein R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms). The liquid crystal composition of claim 4, which contains a compound represented by the formula (39.2) as a compound represented by the formula (X-2-1), The liquid crystal composition of claim 5, which contains a compound represented by the formula (5.2) which is a compound represented by the formula (I-4), The liquid crystal composition of claim 6, which contains the compound represented by the formula (18.3) as a compound represented by the formula (IV), The liquid crystal composition of claim 7, which contains a compound represented by the following formula (31.4) as a compound represented by the formula (IX-2-2), The liquid crystal composition of claim 8, which contains the compound represented by the formula (8.1) which is a compound represented by the formula (I-7), The liquid crystal composition of claim 9, which contains a compound represented by the formula (10.1) as a compound represented by the formula (II-1), The liquid crystal composition of claim 10, which contains the compound represented by the formula (28.5) which is a compound represented by the formula (IX-1), The liquid crystal composition of claim 11, which contains a compound represented by the formula (54.1) and/or formula (54.4) as a compound represented by the formula (XIV-2-2), The liquid crystal composition of claim 12, which contains a compound represented by the formula (42.3) which is a compound represented by the formula (X-4), The liquid crystal composition of claim 13, which contains a compound represented by the formula (38.2) as a compound represented by the formula (X-1-3), The liquid crystal composition of claim 2, which contains 14% or more of the compound represented by the formula (I-1-1) as a compound represented by the formula (L), (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 4 carbon atoms). The liquid crystal composition of claim 2, which contains the compound represented by the formula (II-2) as a compound represented by the formula (L), (wherein 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 25, which contains 9% or more of the compound represented by the formula (11.2) which is a compound represented by the formula (II-2), The liquid crystal composition of claim 10, which contains 15% or more of the compound represented by the formula (28.3) as a compound represented by the formula (IX-1), The liquid crystal composition of claim 3, which contains a compound represented by the formula (VIII-1) which is a compound represented by the formula (M), (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). The liquid crystal composition of claim 28, which contains 3% or more of the compound represented by the formula (26.1) which is a compound represented by the formula (M), The liquid crystal composition of claim 6, which contains 7% or more of the compound represented by the formula (18.4) and/or the formula (18.5) as a compound represented by the formula (IV), The liquid crystal composition of claim 2, which contains 6% or more of the compound represented by the formula (III) which is a compound represented by the formula (L), (R ³¹ and R ³² each independently represent an alkenyl group having 2 to 5 carbon atoms or 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 6, which contains 0.5% or more and less than 5% of the compound represented by the formula (19.1) and/or the formula (19.2) as the compound represented by the formula (IV), The liquid crystal composition of claim 11, which contains 5% or more of the compound represented by the formula (54.2) which is a compound represented by the formula (XIV-2-2), The liquid crystal composition of claim 6, which contains 6% or more of the compound represented by the formula (19.3) and/or the formula (19.4) which is a compound represented by the formula (IV), The liquid crystal composition of claim 6, which contains 0.5% or more and less than 5% of a compound represented by the following formula (19.31) and/or (19.32) as a compound represented by the formula (IV), The liquid crystal composition of claim 3, which contains 0.5% or more and less than 2% of the compound represented by the formula (41.2) as a compound represented by the formula (M), A liquid crystal display element for active matrix driving, which uses the liquid crystal composition according to any one of claims 1 to 36. The active matrix driving liquid crystal display element of claim 37, wherein the operation mode is the IPS mode. The active matrix driving liquid crystal display element of claim 37, wherein the operation mode is the FFS mode. The active matrix driving liquid crystal display device of claim 37, wherein the operation mode is the VA-IPS mode. The active matrix driving liquid crystal display element of claim 37, wherein the operation mode is the OCB mode. The active matrix driving liquid crystal display element of claim 37, wherein the operation mode is the ECB mode. A liquid crystal display using the active matrix liquid crystal display element according to any one of claims 37 to 42.