TWI629344B - Liquid crystal composition, and liquid crystal display element using the same - Google Patents

Abstract

An object of the present invention is to provide a liquid crystal composition which is a liquid crystal composition having a positive Δ ε, a liquid crystal phase having a wide temperature range, low viscosity, good solubility at low temperatures, high specific resistance or voltage holding ratio, In order to achieve the object, a liquid crystal composition which is stable to heat or light is provided, and at least one compound represented by the formula (i) and a compound selected from the formula (ii-1) and (ii-2) are provided. a liquid crystal composition of at least one of the compounds represented by the compound,

(wherein R ⁱ¹ 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 are independently independently -CH=CH-, -C≡ a C-, -O-, -CO-, -COO- or -OCO- substitution, wherein a hydrogen atom in the alkyl group may be substituted by a fluorine atom or a chlorine atom, n ⁱ¹ represents 1 or 2, and X ⁱ¹ represents a hydrogen atom or fluorine. Atom, A ⁱ¹ represents a trans-1,4-cyclohexylene group or a 1,4-phenylene group in which a hydrogen atom may be substituted by a fluorine atom or a chlorine atom, and Z ⁱ¹ represents a single bond, -CH=CH-, -C≡ C-, -CH ₂ CH ₂ -, -COO- or -OCO-, but n ⁱ¹ represents 2, and A ⁱ¹ and Z ⁱ¹ may each be the same or different).

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, since the setting of Δn × d of the product of Δn and the cell gap (d) 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 general formulae (A-1) to (A-3) in which a liquid crystal compound having a positive Δ ε is combined has been disclosed, and Δ ε is a liquid crystal composition used in the following general formula (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 the recently popular smart phones are optimized. The amount of liquid crystal injection to be combined 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, for example, it is necessary to have a small effect on the rapid pressure change or the squeezing in the dripping device which is generated when the liquid crystal is dropped, and it is necessary to continue to drip the liquid crystal stably over a long period of time. .

In this way, the liquid crystal composition used in the active matrix driving liquid crystal display device driven by the TFT element or the like has high-respective resistance as a characteristic of the liquid crystal display element, in addition to maintaining high-speed reaction performance and the like. In addition to the value or high voltage holding ratio or the stability of external stimuli such as light or heat, development of a manufacturing method of a liquid crystal display element is being considered.

[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. A stable liquid crystal composition is further used to provide an IPS which is excellent in display quality and display defects such as residual images or dripping marks. Liquid crystal display elements such as type or TN type.

The inventors of the present invention have reviewed various liquid crystal compounds and various chemical substances, and have found that the above problems can be solved by combining specific liquid crystal compounds, and the present invention has been completed.

That is, the present invention provides the following invention.

(1) A liquid crystal composition containing at least one compound represented by the formula (i) and at least one selected from the group consisting of a compound represented by the formula (ii-1) and a compound represented by (ii-2) 1 species,

(wherein R ⁱ¹ 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 are independently independently -CH=CH-, -C≡ a C-, -O-, -CO-, -COO- or -OCO- substitution, wherein a hydrogen atom in the alkyl group may be substituted by a fluorine atom or a chlorine atom, n ⁱ¹ represents 1 or 2, and X ⁱ¹ represents a hydrogen atom or fluorine. Atom, A ⁱ¹ represents a trans-1,4-cyclohexylene group or a 1,4-phenylene group in which a hydrogen atom may be substituted by a fluorine atom or a chlorine atom, and Z ⁱ¹ represents a single bond, -CH=CH-, -C≡ C-, -CH ₂ CH ₂ -, -COO- or -OCO-, but n ⁱ¹ represents 2, and A ⁱ¹ and Z ⁱ¹ may each be the same or different).

(2) The liquid crystal composition according to (1), wherein Z ⁱ¹ in the formula (i) is a single bond.

(3) The liquid crystal composition according to (1), wherein A ⁱ¹ in the formula (i) is a trans-1,4-cyclohexylene group.

(4) The liquid crystal composition according to (1), wherein n ⁱ¹ in the formula (i) is 2.

(5) The liquid crystal composition according to any one of (1) to (4), which contains a compound represented by the following 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. However, the compound represented by the formula (i) and the compound represented by the formula (ii) are excluded.

The liquid crystal composition of any one of (1) to (5) containing the compound represented by the following General 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 are independently independently -CH=CH-, -C≡ C-, -O-, -CO-, -COO- or -OCO-substituted, PM represents 0, 1, 2, 3 or 4, and C ^M1 and C ^M2 each independently represent a group selected from the group 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 which is present in this group -CH= or two or more non-contiguous -CH= may be substituted with -N=), the above-mentioned group (d), group ( e) each 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, which may be The same or 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, a chlorine atom or a fluorine atom. , X ^M2 represents a hydrogen atom, a fluorine atom, a chlorine atom, a cyano group, three Methyl, fluoromethoxy, difluoromethoxy, trifluoromethoxy or 2,2,2-trifluoroethyl; but the compound represented by the formula (i) and the formula (ii) Except for the compound represented by the compound).

(7) A liquid crystal display element for active matrix driving, which uses the liquid crystal composition according to any one of (1) to (6).

(8) The liquid crystal display element for active matrix driving according to (7), wherein the operation mode is the IPS method.

(9) The liquid crystal display element for active matrix driving according to (7), wherein the operation mode is the FFS method.

(10) The liquid crystal display element for active matrix driving according to (7), wherein the operation mode is the ECB method.

(11) The liquid crystal display element for active matrix driving according to (7), wherein the operation mode is the OCB method.

(12) The liquid crystal display element for driving an active matrix according to (7), wherein the operation mode is the VA method.

(13) The liquid crystal display element for driving an active matrix according to (7), wherein the operation mode is the VA-IPS method.

(14) A liquid crystal display using the active matrix liquid crystal display device according to any one of (7) to (13).

The liquid crystal composition of the present invention has positive dielectric anisotropy, and has a significantly reduced viscosity compared with the conventional one, and has good solubility at low temperatures, and the change in heat or light due to specific resistance or voltage holding ratio is extremely small. The product has high practicability, and a high-speed reaction can be achieved by using a liquid crystal display element such as an IPS type or an FFS type. Further, in the liquid crystal display device manufacturing process, it is very useful because it can stably exhibit performance due to suppression of display defects in the process and can be manufactured with high yield.

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 "black plane", and a substrate having 200 to 205 is referred to as a "front plane".

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 provides a compound represented by the formula (i) having positive dielectric anisotropy and containing at least one of positively dielectric components, and a compound selected from the group consisting of formula (ii-1) A liquid crystal composition of at least one of the compound represented by the formula and the compound represented by the formula (ii-2).

<About general formula (i)>

The liquid crystal composition of the present invention contains a compound represented by the formula (i) as an essential component.

(wherein R ⁱ¹ 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 are independently independently -CH=CH-, -C≡ a C-, -O-, -CO-, -COO- or -OCO- substitution, wherein a hydrogen atom in the alkyl group may be substituted by a fluorine atom or a chlorine atom, n ⁱ¹ represents 1 or 2, and X ⁱ¹ represents a hydrogen atom or fluorine. The atom, A ⁱ¹ each independently represents a 1,4-phenylene group in which a trans-1,4-cyclohexylene group or a hydrogen atom may be substituted by a fluorine atom or a chlorine atom, and Z ⁱ¹ represents -CH=CH-, -C≡C. -, -CH ₂ CH ₂ -, -COO- or -OCO-, but n ¹¹ represents the case of 2, and A ⁱ¹ and Z ⁱ¹ may each be the same or different).

The content ratio of the compound represented by the formula (i) is preferably 25% by mass, more preferably 20% by mass, based on 100% by mass of the total amount of the liquid crystal composition of the present invention. 15% by mass is preferable, 13% by mass is preferable, 6% by mass is preferable, 4% by mass is preferable, and 3% by mass is preferable, and 0.5% by mass is preferable in terms of the lower limit value. 1% by mass is preferred, 5% by mass is preferred, and 6% by mass is preferred.

Specifically, the content of the compound represented by the formula (i) is preferably 0.5% by mass or more and 8 parts by mass or less, and preferably 1% by mass or more and 5% by mass or less based on 100% by mass of the total amount of the liquid crystal composition of the present invention. Preferably, it is preferably 1% by mass or more and 3 mass% or less, and in other embodiments, it is 4 The mass% or more is preferably 15 mass or less, preferably 5 mass% or more and 13 mass% or less, and preferably 6 mass% or more and 12 mass or less.

The compound represented by the above formula (i) which is an essential component of the liquid crystal composition of the present invention is preferably a compound represented by the following formula (XIII-2).

(wherein R ¹³ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms).

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

The ratio of the compound represented by the formula (XIII-2) is preferably 5% by mass or more and 25% by mass or less, preferably 6% by mass or more and 25% by mass based on 100% by mass based on the total amount of the liquid crystal composition of the present invention. % is preferably 8% by mass or more and 20% by mass or less, and more preferably 10% by mass or more and 15% by mass or less.

Further, the compound represented by the formula (XIII-2) is preferably a compound represented by the formula (49.1) to the formula (49.4), and a compound represented by the formula (49.1) and/or the formula (49.2) is preferred. It is preferred to use a compound represented by the combination formula (49.1) and formula (49.2). The content of the compound represented by the formula (49.1) and the formula (49.2) is preferably 7% by mass or more and 15% by mass or less, and 9% by mass or more and 13% by mass or less based on 100% by mass of the total amount of the liquid crystal composition of the present invention. It is better.

When the compound represented by the formula (49.1) and the formula (49.2) is used in combination, it is preferred to use a compound represented by the formula (49.1), and the compound represented by the formula (49.1) is a compound (49.1). The total of the compounds represented by the formula (49.2) is preferably 30% by mass or more and 40% by mass, and preferably 34% by mass or more and 38% by mass.

Further, the compound represented by the formula (i) is preferably a compound represented by the formula (XIII-3).

(wherein R ¹³ 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 preferred to contain one to two of these compounds.

The ratio of the compound represented by the formula (XIII-3) is preferably 2% by mass or more based on 100% by mass based on the total amount of the liquid crystal composition of the present invention. The mass% or less is preferably 4% by mass or more and 20% by mass, preferably 9% by mass or more and 17% by mass, and more preferably 11% by mass or more and 14% by mass or less.

The compound represented by the formula (XIII-3) is preferably a compound represented by the formula (50.1) to the formula (50.4), and a compound represented by the formula (50.1) and/or the formula (50.2) is preferred.

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

(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-1-2) is 1% by mass or more, preferably 2% by mass or more, and preferably 6% by mass based on 100% by mass based on the total amount of the liquid crystal composition of the present invention. %the above.

In addition, the content of the compound represented by the formula (X-1-2) is preferably 20% by mass as the upper limit, and 16% by mass, in view of the solubility in the low temperature, the transfer temperature, and the electrical reliability. Preferably, 12% by mass is preferred, and 10% by mass is preferred.

Specifically, the content of the compound represented by the formula (X-1-2) is preferably 0.5% by mass or more and 15% by mass or less based on 100% by mass based on the total amount of the liquid crystal composition of the present invention, and 1% by mass. The above 12 mass or less is preferable, and 1 mass% or more and 9 mass or less are preferable, and in other embodiments, 0.5 mass% or more and 5 mass or less are preferable, and 1 mass% or more and 3 mass or less are preferable. In other embodiments, it is preferably 5 mass% or more and 13 mass% or less, preferably 6 mass% or more and 10 mass% or less, and preferably 6 mass% or more and 9 mass% or less.

Further, the compound represented by the formula (X-1-2) used in the liquid crystal composition of the present invention, specifically, the compound represented by the formula (37.1) to the formula (37.4) is preferable, and the formula ( The compound represented by 37.2) is preferred. The content of the compound represented by the formula (37.2) is preferably 0.5% by mass or more and 15% by mass or less based on 100% by mass of the total amount of the liquid crystal composition of the present invention, and preferably 1% by mass or more and 12% by mass or less. It is preferable that the mass% is not more than 9 mass%, and in other embodiments, it is preferably 0.5% by mass or more and 5 mass% or less, more preferably 1% by mass or more and 3 parts by mass or less, and in other embodiments, the mass is 5 mass. More preferably, it is preferably at least 13 mass%, more preferably 6 mass% or more and 10 mass% or less, and more preferably 6 mass% or more and 9 mass or less.

Further, the compound represented by the formula (i) of the present invention is preferably a compound represented by the following formula (X-3-1).

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

The content of the compound represented by the formula (X-3-1) is 1% by mass or more, preferably 2% by mass or more, and then preferably 3% by mass based on 100% by mass of the total amount of the liquid crystal composition of the present invention. %the above.

In particular, the content of the compound represented by the formula (X-3-1) is preferably 0% by mass or more and 10% by mass or less, preferably 0, in view of low-temperature solubility, transfer temperature, electrical reliability, and the like. % by mass or more and 8% by mass or less It is preferably 0% by mass or more and 6% by mass or less, and then preferably 0% by mass or more and 4% by mass or less.

Further, the compound represented by the formula (X-3-1) used in the liquid crystal composition of the present invention, specifically, the compound represented by the formula (41.1) to the formula (41.4) is preferable, and the formula ( The compound represented by 41.2) is preferred.

Further, the compound represented by the formula (i) is preferably a compound represented by the following formula (XIV-2-5).

(wherein R ¹⁴ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms).

The content of the compound represented by the general formula (XIV-2-5) in consideration of the solubility at low temperature, the transfer temperature, electrical reliability, etc., with respect to the present invention The total mass of the liquid crystal composition is 100% by mass, preferably 5% by mass or more and 25% by mass or less, preferably 10% by mass or more and 22% by mass or less, preferably 13% by mass or more and 18% by mass or less, and then preferably It is 13% by mass or more and 15% by mass or less.

Further, the compound represented by the formula (XIV-2-5) is specifically a compound represented by the formula (57.1) to the formula (57.4). It is preferable to contain a compound represented by the formula (57.1).

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

(wherein R ¹⁴ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms).

Consider the case of low temperature solubility, transfer temperature, electrical reliability, etc. The content of the compound represented by the formula (XIV-2-6) is preferably 5% by mass or more and 25% by mass or less, preferably 10% by mass or more based on 100% by mass of the total amount of the liquid crystal composition of the present invention. 22% by mass or less, preferably 15% by mass or more and 20% by mass or less, and then preferably 15% by mass or more and 17% by mass or less.

Further, the compound represented by the formula (XIV-2-6), specifically, the compound represented by the formula (58.1) to the formula (58.4) is preferable, and the compound represented by the formula (58.2) is more preferably contained. .

<About the general formula (ii-1) and (ii-2)>

The liquid crystal composition of the present invention contains a compound represented by the following formula (ii-1) and/or a compound represented by (ii-2) as an essential component.

The content of the compound represented by the formulae (ii-1) and (ii-2) is determined in consideration of the required solubility, birefringence, and the like.

The content of the compound represented by the formula (ii-1) is preferably 5% by mass, more preferably 5% by mass, and 7% by mass, based on 100% by mass of the total amount of the liquid crystal composition of the present invention. Preferably, 11% by mass is preferred, 13% by mass is preferred, and 15% by mass is preferred.

In addition, the content of the compound represented by the formula (ii-1) is preferably 25% by mass as the upper limit, and preferably 23% by mass, in view of the solubility in the low temperature, the transfer temperature, and the electrical reliability. 21% by mass is preferable, 19% by mass is preferable, 15% by mass is preferable, 23% by mass is preferable, 21% by mass is preferable, 19% by mass is preferable, and 17% by mass is preferable.

Specifically, the content of the compound represented by the formula (ii-1) is preferably 6% by mass or more and 27% by mass or less based on 100% by mass based on the total amount of the liquid crystal composition of the present invention, and is preferably 8% by mass or more and 25% by mass. In the following, it is preferably 10% by mass or more and 23% by mass or less, and in other embodiments, it is preferably 5% by mass or more and 20% by mass or less, more preferably 8% by mass or more and 18% by mass or less, and more preferably 10% by mass or more. 16 mass or less is preferable, and in other embodiments, 13 mass% or more and 28 mass or less are preferable, and 15 mass% or more and 25 mass or less are preferable, and 16 mass% or more and 23 mass or less are preferable.

Moreover, the content of the compound represented by the formula (ii-2) is relatively The total amount of the liquid crystal composition of the present invention is 100% by mass, preferably 1% by mass as the lower limit, 2% by mass, preferably 3% by mass, and preferably 5% by mass.

In addition, the content of the compound represented by the formula (ii-2) is preferably 20% by mass as the upper limit, and preferably 16% by mass, in view of the solubility in the low temperature, the transfer temperature, and the electrical reliability. 12% by mass is preferred, and 10% by mass is preferred.

Specifically, the content of the compound represented by the formula (ii-2) is preferably 1% by mass or more and 23% by mass or less based on 100% by mass based on the total amount of the liquid crystal composition of the present invention, and is preferably 3% by mass or more and 21% by mass. In the following, it is preferably 5% by mass or more and 19% by mass or less, and in other embodiments, it is preferably 1% by mass or more and 15% by mass or less, more preferably 3% by mass or more and 13% by mass or less, and more preferably 5% by mass or more. 11 mass or less is preferable, and in other embodiments, 13 mass% or more and 23 mass or less are preferable, and 15 mass% or more and 21 mass or less are preferable, and 17 mass% or more and 19 mass or less are preferable.

When the solubility of the liquid crystal composition is emphasized, it is preferred to use the compound represented by the above formula (ii-1) and the compound represented by the formula (ii-2).

The total content of the compound represented by the formula (ii-1) and the compound represented by the formula (ii-2) is 100% by mass based on the total amount of the liquid crystal composition of the present invention, and the lower limit is 16% by mass. Preferably, 18% by mass is preferred, 20% by mass is preferred, 22% by mass is preferred, 24% by mass is preferred, and 26% by mass is preferred.

Also, consider the solubility at low temperature, transfer temperature, electrical reliability, etc. In the case, the total content of the compound represented by the formula (ii-1) and the compound represented by the formula (ii-2) is preferably 33% by mass as the upper limit, and preferably 31% by mass, and 29% by mass. Preferably, 27% by mass is preferred, 25% by mass is preferred, and 23% by mass is preferred.

Specifically, the total content of the compound represented by the formula (ii-1) and the compound represented by the formula (ii-2) is 15% by mass or more based on 100% by mass of the total amount of the liquid crystal composition of the present invention. 27 mass or less is preferable, 18 mass% or more and 24 mass or less are preferable, and 20 mass% or more and 22 mass or less are preferable, and in other embodiments, 22 mass% or more and 34 mass or less are preferable, and 25 mass is preferable. It is preferable that the amount is 31% or more and the mass is 27% or more and 29% or less.

With respect to the combination of the compounds represented by the general formula (i), the formula (ii-1) and the formula (ii-2), the combination of the compounds represented by the formula (37.2) and the formula (ii-1), the formula (37.2) And a combination of the compounds represented by the formula (ii-2), a combination of the compounds represented by the formulae (37.2), (ii-1) and (ii-2), and the formula (49.1), (49.2) and the formula ( The combination of the compounds represented by ii-2) is preferred.

In the case of the compound represented by the formula (37.2) and the formula (ii-1), the total content of the two compounds is 100% by mass based on the total amount of the liquid crystal composition of the present invention, and the lower limit is 12% by mass. Preferably, 14% by mass is preferable, 16% by mass is preferable, 18% by mass is preferable, and 24% by mass is preferable, and the upper limit value is considered in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. 30% by mass is preferred, 28% by mass is preferred, 26% by mass is preferred, and 24% by mass is preferred. Specifically, the total content of the two compounds is preferably 13% by mass or more and 29% by mass or less based on 100% by mass of the total amount of the liquid crystal composition of the present invention, and 15% by mass or more and 27% by mass. The following is preferable, and it is preferable that it is 18 mass% or more and 25 mass or less.

In the case of the compound represented by the formula (37.2) and the formula (ii-2), the total content of the two compounds is 100% by mass based on the total amount of the liquid crystal composition of the present invention, and the lower limit is 16% by mass. Preferably, 18% by mass is preferable, 20% by mass is preferable, and 21% by mass is preferable. When considering low-temperature solubility, transfer temperature, electrical reliability, etc., it is preferable that the upper limit is 30% by mass. 28% by mass is preferred, 26% by mass is preferred, and 24% by mass is preferred. Specifically, the total content of the two compounds is preferably from 17% by mass to 29% by mass based on 100% by mass of the total amount of the liquid crystal composition of the present invention, and preferably from 19% by mass to 27% by mass, and 21% by mass. More than or equal to 25 mass% is preferred.

In the case of combining the compounds represented by the formulas (37.2), (ii-1) and (ii-2), the total content of the two compounds is 100% by mass based on the total amount of the liquid crystal composition of the present invention. The value is preferably 21% by mass, preferably 23% by mass, preferably 25% by mass, and preferably 27% by mass. When considering solubility at low temperature, transfer temperature, electrical reliability, etc., the upper limit is 37% by mass is preferred, 35% by mass is preferred, 33% by mass is preferred, and 31% by mass is preferred. Specifically, the total content of the two compounds is preferably from 22% by mass to 36% by mass based on the total amount of the liquid crystal composition of the present invention, and preferably from 24% by mass to 34% by mass, and 26% by mass. More than 32% of the above is preferable.

In the case of combining the compounds represented by the formulas (49.1), (49.2) and (ii-2), the total content of the two compounds is 100% by mass based on the total amount of the liquid crystal composition of the present invention, and is a lower limit. 22% by mass is preferred, 24% by mass is preferred, 26% by mass is preferred, and 28% by mass is preferred. When the solubility at low temperature, the transfer temperature, the electrical reliability, and the like are considered, the upper limit is preferably 37% by mass, preferably 35% by mass, preferably 33% by mass, and preferably 31% by mass. Specifically, the total content of the two compounds is preferably 23% by mass or more and 36% by mass or less, and preferably 25% by mass or more and 34% by mass or less, based on 100% by mass of the total amount of the liquid crystal composition of the present invention. It is preferable that the mass% is 32 or more.

<Compound represented by the formula (L)>

The liquid crystal composition of the present invention contains at least one type of compound represented by the formula (L), and is preferably a compound. However, the compound represented by (ii-1) and the compound represented by (ii-2) are excluded.

(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 independently be -CH=CH -, -C≡C-, -O-, -CO-, -COO- or -OCO-substituted, OL represents 0, 1, 2 or 3, and B ^L1 , B ^L2 and B ^L3 are each independently selected from the following The group of the group consisting of: (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 (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) The group (b) is 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. They may be the same or different. OL is 2 or 3 and B ^L3 is a plurality of cases. They may be the same. Can be different).

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. 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 general formula (L) depends on the solubility at low temperature, the transfer temperature, the electrical reliability, the birefringence, the process suitability, the dripping trace, the afterimage, and the dielectric. It is necessary to adjust to the performance requested by the opposite sex.

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. Or another embodiment of the present invention is that the content is from 10 to 95% by mass. Furthermore, in another embodiment of the present invention, the content is 20 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, in another embodiment of the present invention, the content 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% by mass.

In the case where the liquid crystal composition having a high reaction rate is necessary, in order to keep the viscosity of the liquid crystal composition low, it is preferable that the lower limit value and the upper limit value are high.

Further, 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 the above lower limit value And the upper limit value. Both are preferred.

Further, in order to keep the driving voltage low and to increase the dielectric anisotropy, it is preferable that the lower limit value and the upper limit value are lower.

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 and alkenyl group having 4 to 5 carbon atoms are preferred, and the bonded ring structure is cyclohexane, meme and In the case of a saturated ring structure such as an alkane or the like, a linear alkyl group having 1 to 5 carbon atoms, a linear alkoxy group having 1 to 4 (or more) carbon atoms, and a linear carbon atom. The number of 2 to 5 alkenyl groups 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. However, the compound represented by (ii-1) and the compound represented by (ii-2) are excluded.

R ¹¹ -A ¹¹ -A ¹² -R ¹² (I)

(wherein R ¹¹ and R ¹² each independently represent an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and A ¹¹ and A ¹² are each Each independently represents 1,4-cyclohexylene, 1,4-phenylene, 2-fluoro-1,4-phenylene or 3-fluoro-1,4-phenylene.

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

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (I) depends on the solubility at low temperature, the transfer temperature, the electrical reliability, the birefringence, the process suitability, the dropping trace, the afterimage, and the dielectric. It is necessary to adjust to the performance requested by the opposite sex.

The content of the above compound is, for example, 3 to 75% by mass in terms of one embodiment of the present invention with respect to 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.

Further, the content is, for example, 3 to 75% by mass based on the total mass of the liquid crystal composition of the present invention. Furthermore, in another embodiment of the present invention, the content is 3 to 65% by mass. . 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. 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 from 3 to 35% by mass. Further, in another embodiment of the present invention, the content is 3 to 30% by mass.

In the case where the liquid crystal composition having a high reaction rate is necessary, in order to keep the viscosity of the liquid crystal composition low, it is preferable that the lower limit value and the upper limit value are higher.

Further, in the case where the liquid crystal composition of the liquid crystal composition of the present invention has a high Tni and a good temperature stability, the lower limit value 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 value is lower and the upper limit value is lower.

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 The base and the alkenyl group having 4 to 5 carbon atoms are preferred, and the bonded ring structure is cyclohexane, meme, and In the case of a saturated ring structure such as an alkane, a linear alkyl group having 1 to 5 carbon atoms, a linear alkoxy group having 1 to 4 carbon atoms, and a linear carbon atom having 2 to 5 carbon atoms Alkenyl is preferred.

Further, the compound represented by the formula (I) is preferably a compound selected from the group of compounds represented by the formula (I-1). However, the compound represented by (ii-1) and the compound represented by (ii-2) are excluded.

(wherein R ¹¹ and R ¹² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms).

The type of the compound which can be combined is not particularly limited, but it is suitably used in combination depending on the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one 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 liquid crystal composition of the present invention, the content of the compound represented by the formula (I-1) depends on the solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dripping trace, afterimage, and It is necessary to adjust the performance required for electrical anisotropy or the like.

The content of the above compound is, for example, in the embodiment of the present invention, the content of the compound 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. In addition, other implementations of the invention The content of the form 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. Further, in another embodiment of the present invention, the content is 56 to 70% by mass.

The content of the above-mentioned compound, 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. Further, in another embodiment of the present invention, the content is from 3 to 60% 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. 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 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 26% by mass.

In the case where a liquid crystal composition having a high reaction rate is necessary, in order to lower the viscosity of the liquid crystal composition, it is preferable that the lower limit value and the upper limit value are higher.

Further, the liquid crystal composition having good temperature stability is in a necessary form, and in order to keep the Tni of the liquid crystal composition high, the above lower limit value and upper limit value are preferable.

Further, in order to keep the driving voltage low and to increase the dielectric anisotropy, it is preferable that the lower limit value and the upper limit value are lower.

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

(wherein R ¹² represents an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms, or an alkenyl group having 2 to 5 carbon atoms).

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (I-1-1) depends on the solubility at low temperature, the transfer temperature, the electrical reliability, the birefringence, the process suitability, the dripping trace, and the afterimage. It is necessary to adjust the properties required for dielectric anisotropy and the like.

The content of the above compound is, for example, 2 to 60% by mass in terms of one embodiment of the present invention with respect to 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 7 to 60% by mass. Further, in another embodiment of the present invention, the content is from 11 to 60% by mass. Further, in another embodiment of the present invention, the content is 13 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 from 17 to 60% by mass. Further, in another embodiment of the present invention, the content is 20% to 60% by mass. Further, in another embodiment of the present invention, the content is 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 32% to 60% by mass. Further, in another embodiment of the present invention, the content is 35 to 60% by mass.

The content of the above compound is, for example, 2 to 60% by mass in one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Further, in another embodiment of the present invention, the content is 2 to 50% by mass. Furthermore, other embodiments of the present invention are those having a mass of 2 to 40 %. 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 25% 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 3 to 11% by mass.

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

When the compound represented by the formula (1.2) or the formula (1.3) is not used, and the content of the compound represented by the formula (1.2) is improved, the improvement of the reaction rate is effective, and the formula (1.3) is used. The content of the compound to be represented is preferably a liquid crystal composition having a rapid reaction rate and high electrical and optical reliability in the range shown below.

The compound represented by the formula (1.3) is preferably contained in an amount of 3% by mass or more and 35% by mass or less based on the total mass of the liquid crystal composition of the present invention, more preferably 6% by mass or more and 30% by mass or less, and more preferably 8 parts by mass. More than 25% by mass or less is more preferably contained in an amount of 10% by mass or more and 20% by mass or less. The following is particularly preferable, and it is preferably 10% by mass or more and 15% by mass or less.

Further, the compound represented by the formula (I-1) is preferably a compound represented by the formula (I-1-2). However, the compound represented by (ii-1) and the compound represented by (ii-2) are excluded.

(wherein R ¹² represents an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms).

The type of the compound which can be combined is not particularly limited, but it is suitably used in combination depending on the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one 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) depends on the solubility at low temperature, the transfer temperature, the electrical reliability, the birefringence, the process suitability, the dripping trace, and the afterimage. It is necessary to adjust the properties required for dielectric anisotropy and the like.

The content of the above compound is, for example, 7 to 60% by mass in one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Or another embodiment of the present invention is that the content is 15 to 60% by mass. Further, in another embodiment of the present invention, the content is from 18 to 60% by mass. Further, in another embodiment of the present invention, the content is 21 to 60% by mass. Further, in another embodiment of the present invention, the content is 24 to 60% by mass. Furthermore, other embodiments of the present invention are the aforementioned The content is 27 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 34% to 60% by mass. Further, in another embodiment of the present invention, the content is 37% to 47% by mass. Further, in another embodiment of the present invention, the content is 37 to 60% by mass. Further, in another embodiment of the present invention, the content is from 41 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, in another embodiment of the present invention, the content is 22 to 45% by mass.

Further, the content of the above compound is, for example, 7 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 7 to 55% by mass. Further, in another embodiment of the present invention, the content is 7 to 45% 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 7 to 35% by mass. Further, in another embodiment of the present invention, the content is 7 to 30% 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 7 to 20% by mass.

Further, the compound represented by the formula (I-1-2) is preferably a compound selected from the group consisting of compounds represented by the formula (2.1) or the formula (2.2), and the compound represented by the formula (2.2) is more preferable. .

In particular, the compound represented by the formula (2.2) is preferred because it particularly improves the reaction rate of the liquid crystal composition of the present invention.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (2.2) is preferably 5% by mass or more and 55% by mass or less based on the total mass of the liquid crystal composition of the present invention. More preferably, the content is 10% by mass or less, 40% by mass or less, 14% by mass or more and 40% by mass or less, 17% by mass or more and 40% by mass or less, 19% by mass or more and 40% by mass or less, and 22% by mass. 40% by mass or less, 25% by mass or more and 40% by mass or less, 27% by mass or more and 40% by mass or less, 30% by mass or more and 40% by mass or less, 33% by mass or more and 40% by mass or less, and 36% by mass or more and 40% by mass or less the following.

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

It is preferred to adjust the content of the compound represented by the formula (2.5) in view of the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

Specifically, the compound represented by the formula (2.5) is preferably contained in an amount of 11% by mass or more based on 100% by mass of the total mass of the liquid crystal composition of the present invention, more preferably 15% by mass or more, and most preferably 23% by mass or more. Preferably, it is more preferably 26% by mass or more, and particularly preferably 28% by mass or more.

Further, the compound represented by the formula (I) is a compound of the formula (I-2) The compound represented is preferred.

(wherein R ¹³ and R ¹⁴ each independently represent an alkyl group having 1 to 5 carbon atoms).

The kind of the compound which can be combined is not particularly limited, but is combined in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one 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-2) depends on the solubility at low temperature, the transfer temperature, the electrical reliability, the birefringence, the process suitability, the dripping trace, the afterimage, and the It is necessary to adjust the performance required for electrical anisotropy or the like.

The content of the above compound 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. In addition, other embodiments of the present invention The above 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 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 from 3 to 55% by mass. 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.

Further, the compound represented by the formula (I-2) is preferably a compound selected from the group consisting of compounds represented by the formulae (3.1) to (3.4), and the formula (3.1), the formula (3.3) or the formula (3.4) The compound represented is preferred.

In particular, the compound represented by the formula (3.2) is preferred because it particularly improves the reaction rate of the liquid crystal composition of the present invention.

Further, in the case of Tni having a higher reaction rate, it is preferred to use a compound represented by the formula (3.3) or the formula (3.4).

Further, in order to improve the solubility at a low temperature, the content of the compound represented by the formula (3.3) and the formula (3.4) is not preferable because it is 20% by mass or more.

Further, the compound represented by the formula (I-2) is preferably a compound selected from the group consisting of the compounds represented by the formulae (3.1) to (3.4), and the formula (3.1), the formula (3.3) and/or the formula. The compound represented by (3.4) is preferred.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (3.3) is preferably 2% by mass or more and 40% by mass or less based on 100% by mass based on the total amount 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 mass% %% or more and 14% by mass or less, 3% by mass or more and 16% by mass or less, 3% by mass or more and 20% by mass or less, 3% by mass or more and 23% by mass or less, 3% by mass or more and 26% by mass or less, and 3% by mass or more and 30% by mass or less. Hereinafter, it is 3% by mass or more and 34% by mass or less, and 3% by mass or more and 37% by mass or less.

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

(wherein R ¹³ represents an alkyl group having 1 to 5 carbon atoms, and R ¹⁵ represents an alkoxy group having 1 to 4 carbon atoms).

The kind of the compound which can be combined is not particularly limited, but is combined in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one 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-3) depends on the solubility at low temperature, the transfer temperature, the electrical reliability, the birefringence, the process suitability, the dripping trace, the afterimage, and the It is necessary to adjust the performance required for electrical anisotropy or the like.

The content of the above compound is, for example, 3% 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 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, in another embodiment of the present invention, 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, in one aspect of the present invention, the content of the compound is from 3 to 60% by mass based on the total mass of the liquid crystal composition of the present invention. 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 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 high when the content is set to be small.

Further, when the characteristics of the dripping trace or the afterimage are improved, it is preferable to set the content range to the middle.

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

The content of the compound represented by the formula (4.3) is preferably 2% by mass or more and 30% by mass or less based on 100% by mass of the total amount of the liquid crystal composition of the present invention, and more preferably 4% by mass or more and 30% by mass or less. , 6 quality More preferably, the amount is more than 30% by mass, more preferably from 8% by mass to 30% by mass, more preferably from 10% by mass to 30% by mass, even more preferably from 12% by mass to 30% by mass, more preferably from 14% by mass or more. 30% by mass or less is more preferably 16% by mass or more and 30% by mass or less is more preferably 18% by mass or more and 25% by mass or less is more preferably 20% by mass or more and 24% by mass or less is more preferably 22% by mass or more and 23% by mass. % below is especially good.

Further, the compound represented by the formula (I) is preferably a compound selected from the group of 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 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms).

The kind of the compound which can be combined is not particularly limited, but is combined in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one 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 formula (I-4) depends on the solubility at low temperature, the transfer temperature, the electrical reliability, the birefringence, the process suitability, the dripping trace, the afterimage, and the It is necessary to adjust the performance required for electrical anisotropy or the like.

The content of the above compound 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 other embodiments of the present invention are those having the aforementioned content 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 compound is, for example, in one aspect of the present invention, the content of the compound is from 3 to 50% 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 from 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. 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.

In the case where a high birefringence is obtained, the effect is high when the content is set to a large value, and conversely, the case where the high Tni is emphasized, and the effect is set to be high when the content is set to be small. Further, in the case of improving the characteristics of the drop or the residual image, it is preferred to set the content range to the middle.

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 a compound represented by the formula (5.2) to the formula (5.4). For better.

The content of the compound represented by the formula (5.4) is preferably 2% by mass or more and 30% by mass or less based on 100% by mass of the total amount of the liquid crystal composition of the present invention. The more preferable content is, for example, 3 mass% or more and 30 mass% or less, 6 mass% or more and 30 mass% or less, 8 mass% or more, 30 mass% or less, 10 mass% or more, 30 mass% or less, and 12 mass%. 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. 23% by mass or more and 30% by mass or less, 24% by mass or more and 30% by mass or less, 25% by mass or more and 30% by mass or less, or 4% by mass or more and 6% by mass or less, 4% by mass or more and 8% by mass or less, 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, and 4% by mass or more and 20% by mass or less. Hereinafter, 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.

Further, the compound represented by the formula (I) is selected from the formula (I-5) Compounds of the indicated compound groups are preferred.

(wherein R ¹¹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms; and R ¹² represents an alkyl group having 1 to 5 carbon atoms; , an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms).

The kind of the compound which can be combined is not particularly limited, but is combined in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one 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 formula (I-5) depends on the solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dripping trace, afterimage, and It is necessary to adjust the performance required for electrical anisotropy or 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. Furthermore, other embodiments of the invention are The above 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 50% 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 40% 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% by mass to 30% by mass. 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 1% by mass to 15% 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.

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 where the trace or the afterimage characteristic is dropped, it is preferable to set the content range to the middle.

Further, the compound represented by the formula (I-5) is preferably a compound selected from the group consisting of compounds represented by the formulae (6.1) to (6.6), and the formula (6.3), the formula (6.4) and the formula (6.6) The compound represented is more preferred.

For example, the content of the compound represented by the 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 more preferably 4% by mass or more and 30% by mass or less. 5 mass% or more and 30 mass% or less are more preferable, and 6 mass% or more and 30 mass% or less are more preferable, and 9 mass% or more and 30 mass% or less are more preferable, and 12 mass% or more and 30 mass% or less are more preferable, and 14 masses are more preferable. More preferably, it is more preferably 30% by mass or more, more preferably 16% by mass or more and 30% by mass or less, more preferably 18% by mass or more and 25% by mass or less, more preferably 20% by mass or more and 24% by mass or less, and more preferably 22% by mass or more. 23% by mass or less is particularly preferred.

The liquid crystal composition of the present invention may further contain a compound represented by the formula (6.7) and the formula (6.8) having a structure similar to the compound represented by the formula (I-5).

It is preferred to adjust the content of the compound represented by the formula (6.7) in view of the desired properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

Specifically, the content of the compound represented by the formula (6.7) is relative to The total amount of the liquid crystal composition of the present invention is preferably 2% by mass or more, more preferably 3% by mass or more, more preferably 5% by mass or more, and particularly preferably 7% by mass or more.

Further, the compound represented by the formula (I) is preferably a compound selected from the group of compounds represented by the formula (I-6).

(wherein R ¹¹ and R ¹² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms; X ¹¹ and X ¹² are each independently Each of them 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 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 more preferably 4% by mass or more and 30% by mass or less. 5% by mass or more and 30% by mass or less is more preferably 6% by mass or more and 30% by mass or less, more preferably 9% by mass or more and 30% by mass or less, and more preferably 12% by mass or more and 30% by mass or less. It is more preferably 30% by mass or more and 30% by mass or less, more preferably 16% by mass or more and 30% by mass or less, more preferably 18% by mass or more and 25% by mass or less, more preferably 20% by mass or more and 24% by mass or less, and 22% by mass or less. The above 23% by mass or less is particularly preferable.

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

Further, the compound represented by the formula (I) is preferably a compound selected from the group of compounds represented by the 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 each of X ¹² systems is independently represented. Fluorine or chlorine atom).

The content of the compound represented by the formula (I-7) is preferably 1% by mass or more and 30% by mass or less based on 100% by mass of the total amount of the liquid crystal composition of the present invention, and 2% by mass or more and 30% by mass or less is 2% by mass or less. More preferably, it is more preferably 3 mass% or more and 30 mass% or less, more preferably 4 mass% or more and 30 mass% or less, more preferably 6 mass% or more and 30 mass% or less, and even more preferably 8 mass% or more and 30 mass% or less. 10% by mass or more and 30% by mass or less is more preferably 12% by mass or more and 30% by mass or less, more preferably 15% by mass or more and 25% by mass or less, and more preferably 18% by mass or more and 24% by mass or less, and more preferably 21 It is particularly preferable that the mass% is 22% by mass or more.

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

Further, the compound represented by the formula (I) is preferably a compound selected from the group of compounds represented by the formula (I-8).

(wherein 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 properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the formula (I-8) can be determined by low temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, dropping trace, afterimage, dielectric anisotropy, and the like. The performance of the beggar is suitable for adjustment.

Specifically, the content of the compound represented by the formula (I-8) is preferably 5% by mass or more and 65% by mass or less based on 100% by mass of the total amount of the liquid crystal composition of the present invention, and more preferably 10% by mass or more. 65 mass% or less is more preferable, 15 mass% or more and 65 mass% or less are more preferable, 20 mass% or more and 65 mass% or less are more preferable, and 25% by mass or more and 65 mass% or less are more preferable, and 30 mass% or more and 65 mass% are more preferable. % or less is more preferably 35% by mass or more and 65% by mass or less is more preferably 40% by mass or more and 65% by mass or less, more preferably 45% by mass or more and 60% by mass or less, and more preferably 50% by mass or more and 58% by mass or less. More preferably, 55 mass% or more and 56 mass% or less are particularly preferable.

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

Further, the compound represented by the formula (L) is preferably a compound represented by the formula (II), for example.

(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 a 1,4-stretching ring. Hexyl 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 is combined in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one 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 formula (II) is dependent on the solubility at low temperature, the transfer temperature, and the electrical reliability. The performance required for birefringence, process suitability, drop marks, afterimage, dielectric anisotropy, etc., is suitably adjusted.

The content of the above compound 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. Further, in another embodiment of the present invention, the 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.

Further, the content of the above compound is, for example, 3 to 50% 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 from 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. 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. Furthermore, in another embodiment of the present invention, the content is 3 to 5 quality%.

Further, the compound represented by the formula (II) is preferably a compound selected from the group consisting of compounds represented by the 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).

The content of the compound represented by the formula (II-1) is preferably adjusted in accordance with the desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence, and is 4% by mass or more and 24% by mass. The following is preferable, and it is more 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), for example, a compound represented by the formula (10.1) and the formula (10.2) is preferred.

Further, the compound represented by the formula (II), for example, a compound represented by the formula (II-2) is preferred.

(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 required to be low temperature. The combination of the solubility, transfer temperature, electrical reliability, and birefringence is required. 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 formula (II-2) depends on the solubility at low temperature, the transfer temperature, the electrical reliability, the birefringence, the process suitability, the dripping trace, the afterimage, and the It is necessary to adjust the performance required for electrical anisotropy or the like.

The content of the above compound 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. Further, in another embodiment of the present invention, the 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.

Further, the content of the above compound is, for example, 3 to 50% by mass based on the total mass of the liquid crystal composition of the present invention. Furthermore, in another embodiment of the present invention, the content is 3 to 40. quality%. 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 formula (II-2), for example, a compound represented by the formula (11.1) to the formula (11.3) is preferred.

The compound represented by the formula (11.1) may be contained in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, birefringence, etc., and may also contain a compound represented by the formula (11.2). Both the compound represented by the formula (11.1) and the compound represented by the formula (11.2) may contain all of the compounds represented by the formula (11.1) to the formula (11.3).

The content of the compound represented by the formula (11.1) is preferably 3% by mass or more and 40% by mass or less based on 100% by mass based on the total amount of the liquid crystal composition of the present invention, and more preferably 5% by mass or more and 3% by mass or less. 5 mass % or more and 30 mass % or less are more preferable, and 5 mass % or more and 25 mass % or less are especially preferable, and 5 mass % or more and 20 mass % or less are preferable. Further, in the optimum range, for example, 8 mass% or more and 20 mass% or less, 12 mass% or more and 20 mass% or less, 15 mass% or more, 20 mass% or less, and 5 mass% are exemplified. The above 18% by mass or less, 5% by mass or more and 15% by mass or less, 5% by mass or more and 12% by mass or less, 5% by mass or more and 10% by mass or less, and 5% by mass or more and 8% by mass or less.

In addition, the content of the compound represented by the formula (11.2) 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 more preferably 3% by mass or more and 35% by mass or less. 3 mass% or more and 30 mass% or less are more preferable, and 3 mass% or more and 25 mass% or less are more preferable, and 3 mass% or more and 20 mass% or less are especially preferable, and 3 mass% or more and 15 mass% or less are preferable. In the optimum range, for example, 3 mass% or more and 12 mass% or less, 3% by mass or more and 10% by mass or less, 3% by mass or more and 8% by mass or less, 3% by mass or more, 6% by mass or less, and 6% by mass or more can be exemplified. The mass% or less, the 8% by mass or more and 15% by mass or less, the 10% by mass or more and 15% by mass or less, and 12% by mass or more and 15% by mass or less.

When both the compound represented by the formula (11.1) and the compound represented by the formula (11.2) are contained, the total mass of the two compounds is 13% by mass or more and 45% by mass or less based on the total mass of the liquid crystal composition of the present invention. Preferably, it is more preferably 19% by mass or more and 40% by mass or less, and more preferably 24% by mass or more and 35% by mass or less.

Further, the compound represented by the formula (II) is preferably a compound represented by the formula (II-3), for example.

(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 types of compounds that can be combined are not particularly limited, but they are required to be low temperature. It is preferred to include one to three kinds of these compounds in terms of solubility, transfer temperature, electrical reliability, and birefringence.

The content of the compound represented by the 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 necessary to adjust the performance.

Specifically, the content of the compound represented by the formula (II-3) is preferably from 2 to 45% by mass based on 100% by mass of the total of the liquid crystal composition of the present invention, and more preferably, for example, for example, 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%, and 26 to 45 mass%. 29 to 45 mass%, or 2 to 45 mass%, 2 to 40 mass%, 2 to 35 mass%, 2 to 30 mass%, 2 to 25 mass%, 2 to 20 mass%, 2 to 15 mass%, 2 to 10% by mass.

Further, the compound represented by the formula (II-3) is preferably a compound represented by the formula (12.1) to the formula (12.3), for example.

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

The content of the compound represented by the formula (12.1) or the formula (12.2) is 3% by mass or more based on 100% by mass based on the total amount of the liquid crystal composition of the present invention. The mass% or less is preferably 5% by mass or more and 40% by mass or less, more preferably 7% by mass or more and 40% by mass or less, more preferably 9% by mass or more and 40% by mass or less, and more preferably 11% by mass or more and 40% by mass or less. More preferably, it is more preferably 12% by mass or more and 40% by mass or less, more preferably 13% by mass or more and 40% by mass or less, and more preferably 18% by mass or more and 30% by mass or less, and more preferably 21% by mass or more and 25% by mass or less. Very good.

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

When both the compound represented by the formula (12.1) and the compound represented by the formula (12.2) are contained, the total mass of the two compounds is 15% by mass or more and 45% by mass or less based on the total mass of the liquid crystal composition of the present invention. Preferably, it is more 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 particularly 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 100% by mass of the total amount of the liquid crystal composition of the present invention, and more 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 more preferable.

Further, 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 a compound represented by the formula (II-3-1), for example.

(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 contain one to three kinds of these compounds in view of the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. .

The content of the compound represented by the formula (II-3-1) is preferably adjusted in accordance with the desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence, and is 1% by mass or more and 24%. The mass% or less is more preferably 4% by mass or more and 18% by mass or less, more preferably 5% by mass or more and 14% by mass or less.

Further, the compound represented by the formula (II-3-1) is preferably a compound represented by the formula (13.1) to the formula (13.4), and particularly preferably a compound represented by the formula (13.3).

In addition, the content of the compound represented by the formula (13.3) is preferably 4% by mass or more and 5% by mass or less based on 100% by mass of the total amount of the liquid crystal composition of the present invention.

Further, the compound represented by the formula (II) is preferably a compound represented by the formula (II-4), for example.

(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 compound which can be combined is not particularly limited, but it is preferred to include one or two of these compounds in view of the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. It is especially good to contain 1 to 3 types.

The content of the compound represented by the formula (II-4) is preferably from 1% by mass to 15% by mass based on 100% by mass of the total amount of the liquid crystal composition of the present invention, and more preferably from 2% by mass to 15% by mass. Preferably, it is more preferably 3 mass% or more and 15 mass% or less, more preferably 4 mass% or more and 12 mass% or less, and particularly preferably 5 mass% or more and 7 mass% or less.

Further, the compound represented by the formula (II-4) is, for example, a compound represented by the formula (14.1) to the formula (14.5), particularly, a compound represented by the formula (14.2) and/or the formula (14.5). For better.

Further, the compound represented by the formula (L) is preferably a compound selected from the group of 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).

The content of the compound represented by the formula (III) is preferably 3% 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 more preferably 6 mass% or more and 20 mass% or less, and more preferably 8 mass% or more and 15 mass% or less.

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

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

(R ³³ represents an alkenyl group having 2 to 5 carbon atoms, and R ³² each independently represents an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms).

The compound represented by the formula (III-1) is preferably adjusted in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence, and is preferably 4% by mass or more and 23% by mass. The following is preferable, and it is more preferably 6 mass% or more and 18 mass% or less, and more preferably 10 mass% or more and 13 mass% or less.

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

Further, the compound represented by the formula (III) is preferably a compound selected from the group of compounds represented by the 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 formula (III-2) is preferably adjusted in accordance with the desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence, and is 4% by mass or more and 23% by mass. The following is preferable, and it is more preferably 6 mass% or more and 18 mass% or less, and more preferably 10 mass% or more and 13 mass% or less.

Further, the compound represented by the formula (III-2) is, for example, preferably a compound selected from the group consisting of compounds represented by the formulae (17.1) to (17.3). Particularly, a compound represented by the formula (17.3) is preferred. The content of the compound represented by the formula (17.3) is preferably 5% by mass or more and 6% by mass or less based on 100% by mass of the total amount of the liquid crystal composition of the present invention.

Further, the compound represented by the formula (L) is preferably a compound represented by the formula (IV).

(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 kind of the compound which can be combined is not particularly limited, but is combined in accordance with the properties required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one 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 or more types.

Further, the compound represented by the formula (IV) is preferably a compound represented by the formula (IV-1), for example.

(wherein 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 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 necessary to adjust the performance.

The content of the above compound is, for example, 1 to 40% by mass in one embodiment, 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 40% by mass. 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 6 to 40% by mass. Further, in another embodiment of the present invention, the content is 8 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 18 to 40% by mass. Further, in another embodiment of the present invention, the content is 21 to 40% by mass.

Further, for example, in one embodiment of the present invention, the content of the compound is from 1 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 1% by mass to 30% by mass. Further, in another embodiment of the present invention, the content is 1 to 25% by mass. Further, in another embodiment of the present invention, the content is 1 to 20% by mass. Further, other embodiments of the present invention are The content is 1 to 15% 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, in another embodiment of the present invention, the content is 1% by mass to 4% by mass. Further, in another embodiment of the present invention, the content is 5 to 6% by mass.

Further, the compound represented by the formula (IV-1) is preferably a compound represented by the formula (18.1) to the formula (18.9), for example.

The type of the compound that can be combined is not particularly limited, but one to three types of these compounds are preferred, and one to four types are included. Better yet. Further, the molecular weight distribution of the selected compound is also effective for solubility, and for example, a compound represented by the formula (18.4) or (18.5) is selected from the compound represented by the formula (18.1) or (18.2). It is preferable to select one type of the compound represented by the formula (18.6) or the formula (18.7), and to select one type of the compound represented by the formula (18.8) or (18.9), and to select one of the compounds. Among them, a compound represented by the formula (18.1), the formula (18.3), the formula (18.4), the formula (18.6), and the formula (18.9) is preferred.

Further, the compound represented by the formula (IV) is preferably, for example, a compound represented by the formula (IV-2).

(wherein R ⁴⁵ and R ⁴⁶ each independently represent an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, but at least one represents an alkenyl group having 2 to 5 carbon atoms, X ⁴¹ And X ⁴² each independently represents a hydrogen atom or a fluorine atom).

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

The content of the compound represented by the formula (IV-2) depends on the solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dropping trace, afterimage, dielectric anisotropy, and the like. It is necessary to adjust the performance.

Specifically, the content of the compound represented by the formula (IV-2) is 0.5 to 40% by mass based on 100% by mass of the total amount of the liquid crystal composition of the present invention. The amount % is preferred. For better content, for example, 1 to 40% by mass, 2 to 40% by mass, 3 to 40% by mass, 5 to 40% by mass, 7 to 40% by mass, 9 to 40% by mass, and 12 to 40% can be exemplified. % by mass, 15 to 40% by mass, 20 to 40% by mass, or 1 to 40% by mass, 1 to 30% by mass, 1 to 25% by mass, 1 to 20% by mass, 1 to 15% by mass, 1 to 10% Mass%, 1 to 5% by mass, and 1 to 4% by mass.

Further, the compound represented by the formula (IV-2) is preferably a compound represented by the formula (19.1) to the formula (19.8), and a compound represented by the formula (19.2) is preferred.

The compound having a molecular weight distribution selected as a component of the liquid crystal composition is also effective for solubility. For example, each of the compounds represented by the formula (19.1) or (19.2) is selected to be one type, and the formula (19.3) or (19.4) The compound represented by the formula 1 is selected, and the compound represented by the formula (19.5) or the formula (19.6) is selected as one type, and the compound represented by the formula (19.7) or (19.8) is selected as the compound of the first type, and then The compound represented by the formula (19.9) is one selected from the group consisting of a compound selected from the formula (19.9).

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (19.4) is 3% 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. 25 mass% or less is preferable, 5% by mass or more and 20 mass% or less is more preferable, and 5 mass% or more and 15 mass% or less are preferable, and 7 mass% or more and 10 mass% or less are especially preferable.

Further, the compound represented by the formula (L) is preferably a compound selected from the group represented by the formula (V).

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

The type of the compound that can be combined is not particularly limited, but it is required for low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The combination of performance. 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.

The content of the above compound is, for example, 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 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 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 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 of the compound is from 2 to 30% by mass. 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. Furthermore, other embodiments of the present invention are as described above. The content of the compound is 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.

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

(wherein R ⁵¹ and R ⁵² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and X ⁵¹ and X ⁵² systems Each independently represents a fluorine atom or a hydrogen atom).

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

(wherein R ⁵¹ and R ⁵² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms).

The content of the compound represented by the formula (V-1-1) is preferably 1% by mass or more and 15% by mass or less based on 100% by mass of the total amount of the liquid crystal composition of the present invention, and is preferably 2% by mass or more and 15% by mass or more. The mass% or less is more preferably 3% by mass or more and 10% by mass or less, more preferably 4% by mass or more and 8% by mass or less.

Further, the compound represented by the formula (V-1-1) is preferably a compound represented by the formula (20.1) to the formula (20.4), and a compound represented by the formula (20.2) is more preferable.

The content of the compound represented by the formula (20.2) is preferably 3% by mass or more and 5% by mass or less based on 100% by mass of the total amount of the liquid crystal composition of the present invention.

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

(wherein R ⁵¹ and R ⁵² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms).

The content of the compound represented by the formula (V-1-2) is preferably 1% by mass or more and 15% by mass or less based on 100% by mass of the total amount of the liquid crystal composition of the present invention, and is preferably 2% by mass or more. The mass% or less is more preferably 3% by mass or more and 10% by mass or less, more preferably 4% by mass or more and 8% by mass or less.

Further, the compound represented by the formula (V-1-2) is preferably a compound represented by the formula (21.1) to the formula (21.3), and a compound represented by the formula (21.1) is more preferable.

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

(wherein R ⁵¹ and R ⁵² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms).

The content of the compound represented by the formula (V-1-3) is preferably 1% by mass or more and 15% by mass or less based on 100% by mass of the total amount of the liquid crystal composition of the present invention, and is preferably 2% by mass or more and 15% by mass. % or less is more preferable, and it is more preferably 3% by mass or more and 10% by mass or less, and particularly preferably 4% by mass or more and 8% by mass or less.

Further, the compound represented by the formula (V-1-3) is a compound represented by the formula (22.1) to the formula (22.3). The compound represented by the formula (22.1) is more preferable.

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

(Wherein, R ⁵¹ and R ⁵² each independently represents a line number of carbon atoms of an alkyl group having 1 to 5 carbon atoms, an alkenyl group of 2 to 5 carbon atoms or an alkoxy group of 1 to 4, X ⁵¹ and X ⁵² lines Each independently represents a fluorine atom or a hydrogen atom).

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

The content of the above compound is, for example, 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 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. Further, 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. Furthermore, other embodiments of the present invention are the aforementioned 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 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 of the compound is from 2 to 30% by mass. 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 is in the form of an embodiment of high Tni, it is preferable to make the content of the compound represented by the formula (V-2) into a plurality of cases, and the embodiment of the low viscosity is desirable, and the content is made. The less is better.

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

(wherein R ⁵¹ and R ⁵² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms).

Further, the compound represented by the formula (V-2-1) is preferably a compound represented by the formula (23.1) to the formula (23.4), and the compound represented by the formula (23.1) and/or the formula (23.2) is more. good.

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

(wherein R ⁵¹ and R ⁵² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms).

Further, the compound represented by the formula (V-2-2) is preferably a compound represented by the formula (24.1) to the formula (24.4), and the compound represented by the formula (24.1) and/or the formula (24.2) is more. good.

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

(wherein R ⁵¹ and R ⁵² each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms).

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

The content of the compound represented by the formula (V-3) is preferably 2% by mass or more and 16% by mass or less, and preferably 4% by mass or more, based on 100% by mass of the total amount of the liquid crystal composition of the present invention. The mass% or less is more preferably, and it is more preferably 7 mass% or more and 13 mass% or less, and particularly preferably 8 mass% or more and 11 mass% or less.

Further, the compound represented by the formula (V-3) is a formula (25.1) The compound represented by the formula (25.3) is preferred.

<About the compound represented by the formula (M)>

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

(wherein, R ^M1 represents an alkyl group having 1 to 8 carbon atoms, and one of the alkyl groups or two or more non-adjacent-CH ₂ - groups are independently independently -CH=CH-, -C≡ C-, -O-, -CO-, -COO- or -OCO-substituted, PM represents 0, 1, 2, 3 or 4, and C ^M1 and C ^M2 each independently represent a group selected from the group consisting of the following groups : (d) 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- 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 group (d), (e) each independently indicates that it may be substituted by a cyano group, a fluorine atom or a chlorine atom, and K ^M1 and K ^M2 each independently represent a single bond, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ - , -CH ₂ O-, -OCF ₂ -, -CF ₂ O-, -COO-, -OCO- or -C≡C-, PM is 2, 3 or 4 and K ^M1 is a plurality of cases. They may be the same or 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, a chlorine atom or a fluorine atom, X ^M2 represents a hydrogen atom, a fluorine atom, a chlorine atom , cyano, trifluoromethyl, fluoromethoxy, difluoromethoxy, trifluoromethoxy or 2,2,2-trifluoroethyl. Except for the compounds represented by the formula (i) .

The kind of the compound which can be combined is not particularly limited, but it is used in combination according to 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. 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 or more types.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (M) depends on the solubility at low temperature, the transfer temperature, the electrical reliability, the birefringence, the process suitability, the dripping trace, the afterimage, and the dielectric. It is necessary to adjust to the performance requested by the opposite sex.

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

Further, 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 of the compound is from 1 to 85% by mass. 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 other embodiments of the present invention The content of the aforementioned 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 high, 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 the case where the liquid crystal composition of the liquid crystal composition of the present invention having a high Tni and good temperature stability is required, it is necessary to set the lower limit value to a low value and to set the upper limit value to a low value. good. Further, in order to keep the driving voltage low and to increase the dielectric anisotropy, 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.

Further, R ^M1 is in the form of a ring bonded thereto as cyclohexane, meme, 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 chemical stability of the liquid crystal composition is sought, it is preferred that the compound represented by the formula (M) has no chlorine atom in its molecule.

Specifically, the content of the compound represented by the formula (M) containing a chlorine atom is preferably 3% by mass or less based on 100% by mass based on the total amount of the liquid crystal composition, and preferably 1% by mass or less, and preferably 0.5% by mass or less. The mass % or less is preferable, and it is preferable that it is substantially not contained. Also, substantially does not contain a liquid crystal group Only the compound containing an unintended chlorine atom such as a compound produced as an impurity in the production of the compound is mixed in the product.

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

(wherein 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 each independently represent a hydrogen atom or A fluorine atom, Y ⁸ represents a fluorine atom or -OCF ₃ ).

The kind of the compound which can be combined is not particularly limited, but it is used in combination according to 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. Further, 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 formula (VIII) depends on the solubility at low temperature, the transfer temperature, the electrical reliability, the birefringence, the process suitability, the dripping trace, the afterimage, and the dielectric. It is necessary to adjust to the performance requested by the opposite sex.

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

Further, the content of the above compound is, for example, 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 of the compound is from 2 to 30% by mass. In still another embodiment of the present invention, the content of the compound is from 2 to 25% by mass. In still another embodiment of the present invention, the content of the compound is from 2 to 21% by mass. In still another embodiment of the present invention, the content of the compound is from 2 to 16% by mass. In still other embodiments of the present invention The content of the aforementioned compound is 2 to 12% by mass. In still another embodiment of the present invention, the content of the compound is from 2 to 8% by mass. In still another embodiment of the present invention, the content of the compound is from 2 to 5% by mass.

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 high, it is preferable to set the lower limit value to a low value and the upper limit value to a low value. Further, in the case where the liquid crystal composition of the liquid crystal composition of the present invention having a high Tni and good temperature stability is required, 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 keep the driving voltage low and to increase the dielectric anisotropy, it is preferable to set the lower limit value to a high value and 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 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 kind of the compound which can be combined is not particularly limited, but it is used in combination according to 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.

Further, the compound represented by the formula (VIII-1), specifically, the compound represented by the formula (26.1) to the formula (26.4) is preferred, and the compound represented by the formula (26.1) or the formula (26.2) is preferred. Preferably, the compound represented by the formula (26.2) is more preferred.

The content of the compound represented by the formula (26.1) is from 1% by mass to 40% 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. It is more preferably 1% by mass or more and 30% by mass or less, more preferably 1% by mass or more and 20% by mass or less, more preferably 2% by mass or more and 15% by mass or less, and 2% by mass or more and 10% by mass or less. Preferably, 2% by mass or more and 9% by mass or less are particularly preferred. In a particularly preferable range, for example, 2% by mass or more and 7% 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 2% by mass or more can be exemplified. 5% by mass or less, 3% by mass or more and 9% by mass or less, 4% by mass or more and 9% by mass or less, 5% by mass or more and 9% by mass or less, and 6% by mass or more and 9% by mass or less the following.

The content of the compound represented by the formula (26.2) is 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 in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. It is more preferably 4% by mass or more and 30% by mass or less, more preferably 4% by mass or more and 20% by mass or less, and particularly preferably 4% by mass or more and 15% by mass or less. In a particularly preferable range, for example, 3 mass% or more and 12 mass% or less, 4 mass% or more and 10 mass% or less, 4 mass% or more and 8 mass% or less, 4 mass% or more, 6 mass% or less, and 6 mass% or more may be exemplified. The mass% or less, the 8% by mass or more and 15% by mass or less, the 10% by mass or more and 15% by mass or less, and 12% by mass or more and 15% by mass or less.

The total content of the compound represented by the formula (26.1) and the compound represented by the formula (26.2) is preferably 5 to 40% by mass, and 10 to 30% by mass based on the total mass of the liquid crystal composition of the present invention. More preferably, 10 to 25 mass% is more preferable, and 10 to 20 mass% is particularly good.

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

(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 type of the compound that can be combined is not particularly limited, but it depends on the solubility at low temperature, transfer temperature, electrical reliability, birefringence, and the like. Use it in combination with the desired performance. 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 formula (VIII-2) is preferably 2.5% by mass or more and 25% by mass or less, more preferably 3% by mass or more, in view of low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The mass% or less is more preferably 4% by mass and 20% by mass or less, more preferably 5% by mass or more and 15% by mass or less, and more preferably 7% by mass or more and 10% by mass or less.

Further, the compound represented by the formula (VIII-2) is preferably a compound represented by the formula (27.1) to the formula (27.4), and more preferably a compound represented by the formula (27.2).

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

(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 kind of the compound which can be combined is not particularly limited, but it is used in combination according to 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.

Further, the compound represented by the formula (VIII-3), specifically, the compound represented by the formula (26.11) to the formula (26.14) is preferably a compound represented by the formula (26.11) or the formula (26.12). Preferably, the compound represented by the formula (26.12) is more preferred.

Further, a compound represented by the formula (M), for example, a compound represented by the formula (IX) is preferred.

(wherein R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms; and X ⁹¹ and X ⁹² each independently represent a hydrogen atom or A fluorine atom, 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 used in combination according to 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. 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 or more types.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (IX) depends on the solubility at low temperature, the transfer temperature, the electrical reliability, the birefringence, the process suitability, the dripping trace, the afterimage, and the dielectric. It is suitable to adjust to the performance requested by the opposite sex.

The content of the above compound is, for example, 3 to 70% 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 from 5 to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 8 to 70% by mass. For example, in still another embodiment of the present invention, the aforementioned combination The content of the substance is 10 to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 12 to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 15 to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 17 to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 20 to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 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 from 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 70% 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 from 3 to 60% by mass. 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 other embodiments of the present invention, the aforementioned compound The content is 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 high, it is preferable to set the lower limit value to a low value and the upper limit value to a low value. Further, in the case where the liquid crystal composition of the liquid crystal composition of the present invention has a high T value and is difficult to cause image sticking, it is preferable to set the lower limit value to a low value and the upper limit value to a low value. Further, in order to keep the driving voltage low and to increase the dielectric anisotropy, it is preferable to set the lower limit value to a high value and the upper limit value to a high value.

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

(wherein 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; X ⁹² represents a hydrogen atom or a fluorine atom, and Y ⁹ represents Fluorine atom or -OCF ₃ ).

The kind of the compound which can be combined is not particularly limited, but it is used in combination according to 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. Further, other embodiments of the present invention are three types. Further, other embodiments of the present invention are four or more types.

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

(wherein 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 used in combination according to 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. Further, other embodiments of the present invention are three or more types.

The content of the compound represented by the formula (IX-1-1) has a preferred upper limit and a lower limit depending on the embodiment in consideration of low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

With respect to the total mass of the liquid crystal composition of the present invention, the lower limit of the content of the above compound is preferably 1% by mass, more preferably 5% by mass, and the upper limit of the content of the aforementioned compound. , the system is 25 mass% Preferably, 22% by mass is more preferable, 20% by mass is more preferable, and 19% by mass is particularly preferable.

When only one of the above-mentioned compounds is used, the lower limit of the content of the above compound is preferably 1% by mass, preferably 2% by mass, and more preferably 5% by mass, based on the total mass. 6 mass% is preferable, and the upper limit of the content of the above compound is preferably 25% by mass, more preferably 20% by mass, more preferably 15% by mass, and 12% by mass based on the total mass. More preferably, 10% by mass is particularly preferred, and 9% by mass is most preferred.

In the case of using two of the above-mentioned compounds, the total content of the above two compounds is preferably 8% by mass, more preferably 10% by mass, and more preferably 13% by mass, based on the total lower limit of the total mass. More preferably, the total content of the above two kinds of compounds is preferably 25% by mass, more preferably 22% by mass, even more preferably 20% by mass, and 19% by mass based on the upper limit of the total mass. For better.

When the solubility of the liquid crystal composition is important, it is preferable to use two kinds of the compounds represented by the above formula (IX-1-1), and it is preferable to increase the content of the compound represented by the formula (IX-1-1). In this case, it is preferred to use two kinds of the compounds.

The content of the above-mentioned compound is 1 to 25% by mass in one embodiment, 2 to 20% by mass in other embodiments, and 4 to 10% by mass in other embodiments, and further in other embodiments. The form is 10 to 30% by mass, and in other embodiments, it is 14 to 20% by mass, and in still other embodiments, it is 16 to 20% by mass, and in still other embodiments, it is 21 to 40% by mass.

Further, for example, the content of the compound is from 1 to 40% by mass in one embodiment, and from 1 to 35% by mass in other embodiments, relative to the total mass of the liquid crystal composition of the present invention. 1 to 30% by mass, and 1 to 25% by mass in other embodiments, and 1 to 10% by mass in other embodiments, and 1 to 7% by mass in other embodiments, and further implementation The form is 1 to 5 mass%.

Further, the compound represented by the formula (IX-1-1) is preferably a compound represented by the formula (28.1) to the formula (28.5), and the compound represented by the formula (28.3) and/or the formula (28.5) is more. good.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (28.3) is preferably 1% by mass or more and 30% by mass or less based on 100% by mass of the total amount of the liquid crystal composition of the present invention. In a more preferable example of the above content, 2% by mass or more and 20% by mass or less and 2% by mass are exemplified. 15 mass% or less, 2 mass% or more and 12 mass% or less, 2 mass% or more and 9 mass% or less, 2 mass% or more and 5% by mass or less, or 4 mass% or more and 20 mass% or less, and 6 mass% or more and 20 mass%. % or less, 8% by mass or more and 20% by mass or less, 10% by mass or more and 20% by mass or less, and 15% by mass or more and 20% by mass or less.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (28.5) is 2% 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. 25 mass% or less is preferable, 4 mass% or more and 20 mass% or less are more preferable, and 5 mass% or more and 15 mass% or less are preferable, and 7 mass% or more and 10 mass% or less are especially preferable.

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

(wherein 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, but it is preferable to combine one to three types in consideration of low-temperature solubility, transfer temperature, electrical reliability, birefringence, etc., and it is more preferable to combine one to four types.

The content of the compound represented by the formula (IX-1-2) is preferably 1% by mass or more and 30% by mass or less, and preferably 5% by mass or more and 30% by mass based on 100% by mass based on the total amount of the liquid crystal composition of the present invention. % or less is more preferable, and 8 mass% or more and 30 mass% or less are preferable, and 10 mass% or more and 25 mass% or less are preferable. Preferably, it is preferably 14% by mass or more and 22% by mass or less, and particularly preferably 16% by mass or more and 20% by mass or less.

Further, the compound represented by the formula (IX-1-2) is preferably a compound represented by the formula (29.1) to the formula (29.4), and the compound represented by the formula (29.2) and/or the formula (29.4) is more. good.

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

(wherein R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms; and X ⁹¹ and X ⁹² each independently represent a hydrogen atom or A fluorine atom, 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 1 The type is two types in other embodiments, three types in other embodiments, four types in other embodiments, five types in other embodiments, and six or more types in other embodiments. .

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

(wherein 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 it is preferable to combine one to three types in consideration of solubility at low temperature, transfer temperature, electrical reliability, birefringence, and the like.

The content of the compound represented by the formula (IX-2-1) has a preferable upper limit and lower limit in each embodiment in consideration of characteristics such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence. .

For example, in one embodiment of the present invention, the content of the compound 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, and in still other embodiments, the content of the compound is 4 to 40% by mass, and in still other embodiments, 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, and in still other embodiments, the content of the compound is 16 to 40% by mass, and in still other embodiments, the content of the compound is 21 ~40% by mass.

Also, for example, one of the present inventions with respect to the aforementioned total mass In one embodiment, the content of the compound is 1 to 40% by mass, and in other embodiments, the content of the compound is 1 to 35% by mass, and in still other embodiments, the content of the compound is 1 to 30% by mass, and In still another embodiment, the content of the compound is 1 to 25% by mass, and in still other embodiments, the content of the compound is 1 to 22% by mass, and in still other embodiments, the content of the compound is 1 to 20% by mass. %, in still another embodiment, the content of the compound is 1 to 10% by mass, and in still other embodiments, the content of the compound is 1 to 7% by mass, and in still other embodiments, the content of the compound is 1 to 5 mass%.

Further, the compound represented by the formula (IX-2-1) is preferably a compound represented by the formula (30.1) to the formula (30.4), and a compound represented by the formula (30.1) to the formula (30.2) is more preferable.

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

(wherein 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 is no limit to the type of compound that can be combined, but consider the dissolution of low temperature. It is preferable to combine one type to three types, such as solvability, transfer temperature, electrical reliability, birefringence, etc., and it is more preferable to combine one to four types.

The content of the compound represented by the formula (IX-2-2) has an upper limit and a lower limit in each embodiment 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 is from 1 to 40% by mass based on the total mass of the liquid crystal composition of the present invention, and in other embodiments, the content of the compound is from 2 to 40% by mass, and further In another embodiment, the content of the compound is 4 to 40% by mass, and in other embodiments, the content of the compound is 10 to 40% by mass, and in other embodiments, the content of the compound is 14 to 40% by mass. Further, in still another embodiment, the content of the compound is 16 to 40% by mass, and in still other embodiments, the content of the compound is 21 to 40% by mass.

Further, for example, in one embodiment of the present invention, the content of the compound is from 1 to 40% by mass based on the total mass, and in other embodiments, the content of the compound is from 1 to 35% by mass, and in still other embodiments The content of the compound is 1 to 30% by mass, and in other embodiments, the content of the compound is 1 to 25% by mass, and in still other embodiments, the content of the compound is 1 to 22% by mass, and further In another embodiment, the content of the compound is 1 to 15% by mass, and in still other embodiments, the content of the compound is 1 to 12% by mass, and in still other embodiments, the content of the compound is 1 to 8% by mass. Further, in still another embodiment, the content of the compound is from 1 to 4% by mass.

Further, the compound represented by the formula (IX-2-2) is a formula (31.1) The compound represented by the formula (31.4) is preferred, and the compound represented by the formula (31.1) to the formula (31.4) is more preferable.

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

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

The content of the compound represented by the formula (IX-2-3) is preferably 1% by mass or more and 30% by mass or less based on 100% by mass based on the total amount of the liquid crystal composition of the present invention, and is preferably 3% by mass or more and 20% by mass. % or less is more preferable, and 6 mass% or more and 15 mass% or less are preferable, and 8 mass% or more and 10 mass% or less are more preferable.

Further, the compound represented by the formula (IX-2-3) is preferably a compound represented by the formula (32.1) to the formula (32.4), and the compound represented by the formula (32.2) and/or the formula (32.4) is more. good.

The compound represented by the formula (IX-2) is preferably a compound represented by the formula (IX-2-4).

(wherein 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 formula (IX-2-4) is preferably 1% by mass or more and 30% by mass or less based on 100% by mass based on the total amount of the liquid crystal composition of the present invention, and is preferably 3% by mass or more and 20% by mass. % or less is more preferable, and 6 mass% or more and 15 mass% or less are preferable, and 8 mass% or more and 10 mass% or less are particularly preferable.

Further, the compound represented by the formula (IX-2-4) is preferably a compound represented by the formula (33.1) to the formula (33.6), and the compound represented by the formula (33.1) and/or the formula (33.3) is more. good.

The content of the compound represented by the above formula (33.1) is preferably 1% by mass or more and 11% by mass or less based on 100% by mass of the total amount of the liquid crystal composition of the present invention, and more preferably 3% by mass or more and 8% by mass or less. good.

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

(wherein 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 it can be used in combination in any of the embodiments in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. For example, one embodiment of the present invention is one type, two types in other embodiments, three types in other embodiments, and four or more types in other embodiments.

The content of the compound represented by the formula (IX-2-5) has an upper limit and a lower limit in each embodiment in consideration of characteristics such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

For example, an embodiment of the present invention is relative to the present invention In the total mass of the liquid crystal composition, the content of the compound is 4 to 45% by mass, and in other embodiments, the content of the compound is 8 to 45% by mass, and in other embodiments, the content of the compound is 12 to 45 mass. %, and in other embodiments, the content of the compound is 21 to 45% by mass, and in other embodiments, the content of the compound is 30 to 45% by mass, and in other embodiments, the content of the compound is 31 to 45 mass%, and in other embodiments, the content of the above compound is 34 to 45 mass%. Further, for example, in one embodiment of the present invention, the content of the compound is 4 to 45% by mass based on the total mass, and in other embodiments, the content of the compound is 4 to 40% by mass, and in other embodiments, The content of the compound is 4 to 35% by mass, and in other embodiments, the content of the compound is 4 to 32% by mass, and in still other embodiments, the content of the compound is 4 to 22% by mass, and further In another embodiment, the content of the compound is 4 to 13% by mass, and in still other embodiments, the content of the compound is 4 to 9% by mass, and in still other embodiments, the content of the compound is 4 to 8% by mass. Further, in still another embodiment, the content of the compound is 4 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 high, it is preferable to set the lower limit value to a low value and the upper limit value to a low value. Further, in the case where the liquid crystal composition of the liquid crystal composition of the present invention has a high T value and is difficult to cause image sticking, it is preferable to set the lower limit value to a low value and the upper limit value to a low value. Further, in order to keep the driving voltage low and to increase the dielectric anisotropy, the above lower limit is made high. It is preferable to set the value to a high value.

Further, the compound represented by the formula (IX-2-5) is preferably a compound represented by the formula (34.1) to the formula (34.7), and the formula (34.1), the formula (34.2), the formula (34.3) and/or The compound represented by the formula (34.5) is more preferable.

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

(wherein R ⁹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms; and X ⁹¹ and X ⁹² each independently represent a hydrogen atom or A fluorine atom, 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).

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

The content of the compound represented by the formula (IX-3-1) is preferably 3% by mass or more and 30% by mass or less, and preferably 7% by mass or more and 30% by mass based on 100% by mass based on the total amount of the liquid crystal composition of the present invention. % or less is more preferable, and 13% by mass or more and 20% by mass or less are preferable, and 15% by mass or more and 18% by mass or less are particularly preferable.

Further, the compound represented by the formula (IX-3-1) is preferably a compound represented by the formula (35.1) to the formula (35.4), and the compound represented by the formula (35.1) and/or the formula (35.2) is more. good.

Further, the compound represented by the formula (M) is preferably a compound represented by the formula (X). Except for the compound represented by the formula (i).

(wherein, X ¹⁰¹ to X ¹⁰⁴ each independently represent a fluorine atom or a hydrogen atom, Y ¹⁰ represents a fluorine atom, a chlorine atom, -OCF ₃ , Q ¹⁰ represents a single bond or -CF ₂ O-, and R ¹⁰ represents a carbon atom An alkyl group of 1 to 5, 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-stretch Phenyl or

However, the hydrogen atom on the 1,4-phenylene group may be replaced by a fluorine atom).

The compound which can be combined is not particularly limited, but it is suitably combined in each embodiment 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 formula (X) is an upper limit and a lower limit in each embodiment in consideration of characteristics such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

For example, in one embodiment of the present invention, the content of the compound is 2 to 45% by mass based on the total mass of the liquid crystal composition of the present invention, and in other embodiments, the content of the compound is 3 to 45% by mass, and further In another embodiment, the content of the compound is 6 to 45% by mass, and in other embodiments, the content of the compound is 8 to 45% by mass, and in other embodiments, the content of the compound is 9 to 45% by mass. Further, in still another embodiment, the content of the compound is 11 to 45% by mass, and in still another embodiment, the content of the compound is 12 to 45% by mass. Further, in still another embodiment, the content of the compound is from 18 to 45% by mass. In still another embodiment, the content of the compound is from 19 to 45% by mass. In still another embodiment, the content of the compound is 23 to 45% by mass. In still another embodiment, the content of the compound is from 25 to 45% by mass. Further, for example, in one embodiment of the present invention, the content of the compound is 2 to 45% by mass based on the total mass, and in another embodiment, the content of the compound is 2 to 35% by mass. In still another embodiment, the content of the compound is 2 to 30% by mass, and in still other embodiments, the content of the compound is 2 to 25% by mass, and in still other embodiments, the content of the compound is 2 to 20% by mass. %, in still another embodiment, the content of the compound is 2 to 13% by mass, and in still other embodiments, the content of the compound is 2 to 9% by mass, and in still other embodiments, the content of the compound is In another embodiment, the content of the compound is 2 to 3% by mass.

In the case where the liquid crystal composition having a high reaction rate is necessary, in order to keep the viscosity of the liquid crystal composition low, it is preferable to make the lower limit value and the upper limit value lower.

Further, in the case where a liquid crystal composition in which image sticking is hard to occur is necessary, it is preferable to make the lower limit value and the upper limit value lower.

Further, in order to keep the driving voltage low and to increase the dielectric anisotropy, it is preferable to make the lower limit value and the upper limit value higher.

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

(wherein, X ¹⁰¹ to X ¹⁰³ each independently represent a fluorine atom or a hydrogen atom, and R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkyl group having 1 to 4 carbon atoms; Oxy).

The compound which can be combined is not particularly limited, but may be appropriately combined in each embodiment 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, in other embodiments, there are four types. Further, in other embodiments, there are five or more types.

The content of the compound represented by the formula (X-1) has an upper limit and a lower limit in each embodiment 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 is 2 to 40% by mass based on the total mass of the liquid crystal composition of the present invention, and in other embodiments, the content of the compound is 3 to 40% by mass, and further In other embodiments, the content of the compound is 5 to 40% by mass, and in other embodiments, the content of the compound is 6 to 40% by mass, and in other embodiments, the content of the compound is 7 to 40% by mass. Further, in another embodiment, the content of the compound is 8 to 40% by mass, and in still other embodiments, the content of the compound is 9 to 40% by mass. In still another embodiment, the content of the compound is from 13 to 40% by mass. In still another embodiment, the content of the compound is from 18 to 40% by mass. In still another embodiment, the content of the compound is 23 to 40% by mass.

Further, for example, in one embodiment of the present invention, the content of the compound is 2 to 40% by mass based on the total mass, and in other embodiments, the content of the compound is 2 to 30% by mass, and in other embodiments, The content of the aforementioned compound is 2 to 25% by mass, and In other embodiments, the content of the compound is 2 to 20% by mass, and in 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. Further, in still another embodiment, the content of the compound is 2 to 6% by mass, and in still other embodiments, the content of the compound is 2 to 4% by 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).

(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 compound which can be combined is not particularly limited, but may be appropriately combined in each embodiment 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, it is four or more types.

The content of the compound represented by the formula (X-1-1) has an upper limit and a lower limit in each embodiment 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 is 2 to 30% by mass based on the total mass of the liquid crystal composition of the present invention, and in other embodiments, the content of the compound is 5 to 30% by mass. Further, in other embodiments, the content of the compound is 7 to 30% by mass, and in other embodiments, the content of the compound is 9 to 30% by mass, and in other embodiments, the content of the compound is 12~. 30% by mass, and in other embodiments, the content of the compound is 15 to 30% by mass, and in still other embodiments, the content of the compound is 18 to 30% by mass. In still another embodiment, the content of the compound is 21 to 30% by mass.

Further, for example, in one embodiment of the present invention, the content of the compound is from 3 to 30% by mass based on the total mass, and in other embodiments, the content of the compound is from 3 to 20% by mass, and in still other embodiments The content of the above compound is from 3 to 13% by mass, and in still other embodiments, the content of the compound is from 3 to 10% by mass, and in still other embodiments, the content of the compound is from 3 to 7% by mass.

Further, the compound represented by the formula (X-1-1) used in the liquid crystal composition of the present invention, specifically, the compound represented by the formula (36.1) to the formula (36.4) is preferable, and the formula ( The compound represented by 36.1) and/or formula (36.2) is preferred. The content of the compound represented by the formula (36.2) is preferably 2% by mass or more and 7% by mass or less.

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-1-3).

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

The content of the compound represented by the formula (X-1-3) is preferably 1% by mass or more, more preferably 2% by mass or more, and 6% by mass or more based on the total mass of the liquid crystal composition of the present invention. Better. Further, the maximum ratio is preferably 20% by mass or less, preferably 16% by mass or less, more preferably 12% by mass or less, and 10% by mass or less. good.

Further, the compound represented by the formula (X-1-3) used in the liquid crystal composition of the present invention, specifically, the compound represented by the formula (38.1) to the formula (38.4) is preferable, and the formula ( 38.2) The combination represented Better.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (38.2) is preferably 1% 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 2% by mass and 25% by mass. The following is more preferable, and 3 mass% or more and 20 mass% or less are more preferable, and 3 mass% or more and 15 mass% or less are more preferable, and 3 mass% or more and 10 mass% or less are more preferable, and 3 mass% or more and 8 mass% or less are more preferable. More preferably, 4% by mass or more and 5% by mass or less are particularly preferable.

The compound represented by the formula (X) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (X-2). Except for the compound represented by the formula (i).

(wherein, X ¹⁰² to 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, and 2 to 2 carbon atoms; 5 alkenyl or alkoxy having 1 to 4 carbon atoms).

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

Further, 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-2-1).

(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 compound to be combined is not particularly limited, and it is preferably one to two or more kinds in combination with low-temperature solubility, transfer temperature, electrical reliability, birefringence, etc., and more preferably one to three or more.

The content of the compound represented by the formula (X-2-1) 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. In the following, it is preferably 5% by mass or more and 16% by mass or less, more preferably 5% by mass or more and 12% by mass or less, and particularly preferably 6% by mass or more and 10% by mass or less.

Further, the compound represented by the formula (X-2-1) used in the liquid crystal composition of the present invention, specifically, the compound represented by the formula (39.1) to the formula (39.4) is preferable, and the formula ( 39.2) The combination represented Things are better. The content of the compound represented by the formula (39.2) is preferably 5% by mass or more and 6% by mass or less.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (39.2) is preferably 1% 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 2% by mass and 25% by mass. The following is more preferable, and it is more preferably 3 mass% or more and 20 mass% or less, more preferably 3 mass% or more and 15 mass% or less, more preferably 3 mass% or more and 10 mass% or less, and 4 mass% or more and 8 mass% or less. More preferably, 4% by mass or more and 6% by mass or less are particularly preferable.

Further, 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).

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

The content of the compound represented by the 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. In the following, it is preferably 6 mass% or more and 16 mass% or less, more preferably 9 mass% or more and 12 mass% or less, and particularly preferably 9 mass% or more and 10 mass% or less.

Further, the compound represented by the formula (X-2-2) used in the liquid crystal composition of the present invention, specifically, the compound represented by the formula (40.1) to the formula (40.4) is preferable, and the formula ( The compound represented by 40.2) is preferred.

Further, the compound represented by the formula (X) is a formula (X-3) The compound represented is preferred. Except for the compound represented by the formula (i).

(wherein, X ¹⁰² 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 4 or 5 carbon atoms or an alkyl group having 1 to 4 carbon atoms. Oxy).

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

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

(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 compound to be combined is not particularly limited, and it is preferably one to two or more kinds in combination with low-temperature solubility, transfer temperature, electrical reliability, birefringence, etc., and more preferably one to three or more.

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

(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 compound to be combined is not particularly limited, and it is preferably one to two or more kinds in combination with low-temperature solubility, transfer temperature, electrical reliability, birefringence, etc., and more preferably one to three or more.

The content of the compound represented by the formula (X-4-1) 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. In the following, 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 particularly preferably 10% by mass or more and 13% by mass or less.

Further, the compound represented by the formula (X-4-1) used in the liquid crystal composition of the present invention, specifically, the compound represented by the formula (42.1) to the formula (42.4) is preferable, and the formula ( The compound represented by 42.3) is more preferred.

Further, the compound represented by the formula (X) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (X-4-2).

(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 compound to be combined is not particularly limited, and it is preferably one to two or more kinds in combination with low-temperature solubility, transfer temperature, electrical reliability, birefringence, etc., and more preferably one to three or more.

The content of the compound represented by the 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. In the following, 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 particularly preferably 10% by mass or more and 13% by mass or less.

Further, the compound represented by the formula (X-4-2) used in the liquid crystal composition of the present invention, specifically, the compound represented by the formula (42.11) to the formula (42.14) is preferable, and the formula ( The compound represented by 42.13) or formula (42.14) is more preferred.

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

(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 compound to be combined is not particularly limited, and it is preferably one to two or more kinds in combination with low-temperature solubility, transfer temperature, electrical reliability, birefringence, etc., and more preferably one to three or more.

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

Further, the general formula used in the liquid crystal composition of the present invention The compound represented by (X-4-3), specifically, the compound represented by the formula (42.21) to the formula (42.24) is preferable, and the compound represented by the formula (42.22) is more preferably contained.

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

(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 compound to be combined is not particularly limited, and it is preferably one to two or more kinds in combination with low-temperature solubility, transfer temperature, electrical reliability, birefringence, etc., and more preferably one to three or more.

Further, the general formula used in the liquid crystal composition of the present invention The compound represented by (X-5) is preferably a compound represented by the formula (X-5-1).

(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 compound to be combined is not particularly limited, and it is preferably one to two or more kinds in combination with low-temperature solubility, transfer temperature, electrical reliability, birefringence, etc., and more preferably one to three or more.

Further, the compound represented by the formula (X-5-1) used in the liquid crystal composition of the present invention, specifically, the compound represented by the formula (43.1) to the formula (43.4) is preferable, and the formula ( The compound represented by 43.2) is more preferred.

The liquid crystal composition of the present invention is represented by the general formula (X) The compound represented by the formula (X-6) is preferred.

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

The content of the compound represented by the formula (X-6) has an upper limit and a lower limit in each embodiment in consideration of characteristics such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence.

With respect to the total mass of the liquid crystal composition of the present invention, the lower limit of the content of the above compound is preferably 1% by mass, more preferably 2% by mass, and the upper limit of the content of the above compound is preferably 25% by mass. 20% by mass is more preferable, 18% by mass is more preferable, and 16% by mass is particularly preferable.

When only one of the above compounds is used, the content of the above compound is preferably 1% by mass, more preferably 2% by mass, more preferably 3% by mass, and 4% by mass based on the total mass. Particularly preferably, the upper limit of the content of the compound of the total mass is preferably 15% by mass, more preferably 12% by mass, more preferably 10% by mass, and particularly preferably 8% by mass. 7% by mass is the best.

In the case of using two of the above-mentioned compounds, the lower limit of the total content of the above two compounds with respect to the total mass is preferably 5% by mass, more preferably 7% by mass, and 10% by mass. Better, as opposed to The upper limit of the total content of the above two compounds of the total mass is preferably 25% by mass, more preferably 20% by mass, more preferably 18% by mass, more preferably 15% by mass, and 13% by mass. % is better, 10% by mass is particularly good, and 9% by mass is the best.

Further, the compound represented by the formula (X-6) used in the liquid crystal composition of the present invention is specifically a compound represented by the formula (44.1) to the formula (44.4), which contains the formula (44.1). And / or a compound represented by the formula (44.2) is more preferable.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (44.1) is 1% by mass or more based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. 25 mass% or less is preferable, 3 mass% or more and 20 mass% or less are more preferable, and 3 mass% or more and 15 mass% or less are preferable, and 3 mass% or more and 10 mass% or less are especially preferable.

In the liquid crystal composition of the present invention, the formula represented by the formula (44.2) The content of the compound 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 is preferably 3% by mass or more and 20% by mass based on the low temperature solubility, transfer temperature, electrical reliability, and the like. % or less is more preferable, and 3 mass% or more and 15 mass% or less are preferable, and 3 mass% or more and 10 mass% or less are especially preferable.

In the liquid crystal composition of the present invention, the total content of the compound represented by the formula (44.1) and the compound represented by the formula (44.2) is considered to be low-temperature solubility, transfer temperature, electrical reliability, etc., with respect to the liquid crystal of the present invention. The total mass of the composition is preferably 5% by mass or more and 45% by mass or less, more preferably 7% by mass or more and 25% by mass or less, and more preferably 7% by mass or more and 20% by mass or less. In a particularly preferable range, for example, 7 mass% or more and 15 mass% or less, 7 mass% or more and 12 mass% or less, 7 mass% or more and 10 mass% or less, 10 mass% or more, 15 mass% or less, and 12 mass% or more may be exemplified. Below mass%.

The compound represented by the formula (X) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (X-7).

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

The content of the compound represented by the formula (X-7), considering the low temperature The properties of the solubility, the transfer temperature, the electrical reliability, and the birefringence have an upper limit and a lower limit in each embodiment.

For example, in one embodiment of the present invention, the content of the compound is 4 to 30% by mass based on the total mass of the liquid crystal composition of the present invention, and in other embodiments, the content of the compound is 5 to 30% by mass, and further In another embodiment, the content of the compound is 6 to 30% by mass, and in other embodiments, the content of the compound is 8 to 30% by mass, and in other embodiments, the content of the compound is 9 to 30% by mass. Further, in still another embodiment, the content of the compound is 11 to 30% by mass, and in still another embodiment, the content of the compound is 14 to 30% by mass. In still another embodiment, the content of the compound is from 18 to 30% by mass.

Further, for example, in one embodiment of the present invention, the content of the compound is 4 to 30% by mass based on the total mass, and in other embodiments, the content of the compound is 4 to 20% by mass, and in other embodiments, 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, specifically, the compound represented by the formula (44.11) to the formula (44.14) is preferable, and the formula (44.13) is contained therein. The compound represented is more preferred.

Further, the compound represented by the formula (M) is preferably a compound selected from the group represented by the formula (XI).

(wherein, X ¹¹¹ to X ¹¹⁷ each independently represent a fluorine atom or a hydrogen atom, and at least one of X ¹¹¹ to X ¹¹⁷ represents a fluorine atom, and R ¹¹ represents an alkyl group having 1 to 5 carbon atoms and 2 to 2 carbon atoms; An alkenyl group of 5 or an alkoxy group having 1 to 4 carbon atoms, and Y ¹¹ represents a fluorine atom or -OCF3).

The compound which can be combined is not particularly limited, but it is preferably one to three or more types in combination with low-temperature solubility, transfer temperature, electrical reliability, birefringence, and the like.

The content of the compound represented by the formula (XI) has an upper limit and a lower limit in each embodiment 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 is 2 to 30% by mass based on the total mass of the liquid crystal composition of the present invention, and in other embodiments, the content of the compound is 4 to 30% by mass. Further, in other embodiments, the content of the compound is 5 to 30% by mass, and in other embodiments, the content of the compound is 7 to 30% by mass, and in other embodiments, the content of the compound is 9~. 30% by mass, and in other embodiments, the content of the compound is 10 to 30% by mass, and in still other embodiments, the content of the compound is 12 to 30% by mass. Further, in still another embodiment, the content of the compound is from 13 to 30% by mass. Further, in still another embodiment, the content of the compound is 15 to 30% by mass. In still another embodiment, the content of the compound is from 18 to 30% 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, and in other embodiments, the content of the compound is 2 to 25% by mass, and in other embodiments, The content of the compound is 2 to 20% by mass, and in 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, and further 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 (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). 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 (XI) 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 (XI) small.

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

(wherein R ¹¹ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms).

The compound which can be combined is not particularly limited, but it can be appropriately combined in each embodiment 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, and two types are used in other embodiments, and three or more types are combined in still another embodiment.

The content of the compound represented by the formula (XI-1) is from 1% by mass to 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. Preferably, it is more preferably 3 mass% or more and 20 mass% or less, more preferably 4 mass% or more and 20 mass% or less, more preferably 5 mass% or more and 15 mass% or less, and most preferably 7 mass% or more and 12 mass% or less. .

Further, the compound represented by the formula (XI-1) used in the liquid crystal composition of the present invention is specifically a compound represented by the formula (45.1) to the formula (45.4), which contains the formula (45.2). The compound represented by the formula (45.4) is preferred, and the compound represented by the formula (45.2) is more preferred.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (45.2) is 1% by mass or more based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. 25 mass% or less is preferable, 3 mass% or more and 20 mass% or less are more preferable, and 3 mass% or more and 15 mass% or less are preferable, and 3 mass% or more and 10 mass% or less are especially preferable. In a particularly preferable range, for example, 3 mass% or more and 10 mass% or less, 3% by mass or more and 8% by mass or less, 3% by mass or more and 6% by mass or less, 3% by mass or more and 4% by mass or less, and 4% by mass or more, and 10% by mass or more may be exemplified. It is 5% by mass or less, 6% by mass or more and 10% by mass or less, and 8% by mass or more and 10% by mass or less.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (45.3) is 1% by mass or more based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. 25 mass% or less is preferable, 3 mass% or more and 20 mass% or less are more preferable, and 3 mass% or more and 15 mass% or less are preferable, and 3 mass% or more and 10 mass% or less are especially preferable. In the particularly good range, for example, 3 mass% can be exemplified 10% by mass or less, 3% by mass or more and 8% by mass or less, 3% by mass or more and 6% by mass or less, 3% by mass or more and 4% by mass or less, 4% by mass or more and 10% by mass or less, 65% by mass or more and 10% by mass or less. 8% by mass or more and 10% by mass or less.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (45.4) is 1% by mass or more based on the total mass of the liquid crystal composition of the present invention in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. 25 mass% or less is preferable, 3 mass% or more and 20 mass% or less are more preferable, and 3 mass% or more and 15 mass% or less are preferable, and 3 mass% or more and 10 mass% or less are especially preferable.

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

(wherein R ¹¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms).

The compound which can be combined is not particularly limited, 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, and two types are used in other embodiments, and three or more types are combined in still another embodiment.

The content of the compound represented by the 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 solubility at low temperature, transfer temperature, electrical reliability, and the like. Better 3 mass% or more and 20 mass% or less are more preferable, and 4 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 9 mass% or more and 12 mass% or less are especially preferable.

Further, the compound represented by the formula (XI-2) used in the liquid crystal composition of the present invention is specifically a compound represented by the formula (45.11) to the formula (45.14), which contains the formula (45.12). The compound represented by the formula (45.14) is preferred, and the compound represented by the formula (45.12) is more preferably contained.

Further, the compound represented by the formula (M) is preferably a compound represented by the formula (XII).

(wherein, X ¹²¹ to X ¹²⁶ each independently represent a fluorine atom or a hydrogen atom, and R ¹² represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkane having 1 to 4 carbon atoms. Oxy group, Y ¹² represents a fluorine atom or -OCF ₃ ).

The compound to be combined is not particularly limited, and it is preferably one to three or more kinds in combination with low-temperature solubility, transfer temperature, electrical reliability, birefringence, etc., and more preferably one to four or more.

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

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

The content of the compound represented by the formula (XII-1) is preferably 1% by mass or more and 15% by mass or less based on 100% by mass based on the total amount of the liquid crystal composition of the present invention, and is preferably 2% by mass or more and 10% by mass or less. More preferably, it is preferably 3 mass% or more and 8 mass% or less, and more preferably 4 mass% or more and 6 mass% or less.

Further, the compound represented by the formula (XII-1) used in the liquid crystal composition of the present invention, specifically, the compound represented by the formula (46.1) to the formula (46.4) is preferable, and the formula (46.2) is contained therein. The compound represented by the formula (46.4) is more preferable.

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

(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 compound to be combined is not particularly limited, and it is preferably one to two or more kinds in combination with low-temperature solubility, transfer temperature, electrical reliability, birefringence, etc., and more preferably one to three or more.

The content of the compound represented by the formula (XII-2) is preferably 1% by mass or more and 20% by mass or less based on 100% by mass based on the total amount of the liquid crystal composition of the present invention, and is preferably 3% by mass or more and 20% by mass or less. More preferably, it is preferably 4% by mass or more and 17% by mass or less, more preferably 6% by mass or more and 15% by mass or less, and particularly preferably 9% by mass or more and 13% by mass or less.

Further, the general formula used in the liquid crystal composition of the present invention The compound represented by the formula (4II) to the formula (47.4) is preferable, and the compound represented by the formula (47.2) to the formula (47.4) is more preferable.

Further, the compound represented by the formula (M) is preferably a compound represented by the following formula (XIII). Except for the compound represented by the formula (i).

(wherein, X ¹³¹ to X ¹³⁵ each independently represent a fluorine atom or a hydrogen atom, and R ¹³ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkane having 1 to 4 carbon atoms; Oxy group, Y ¹³ represents a fluorine atom or -OCF ₃ ).

The type of the compound which can be combined is not particularly limited, but one type to two types of these compounds are preferable, and one type to three types are more preferable, and one type to four types are more preferable.

The content of the compound represented by the formula (XIII), considering the dissolution at a low temperature The characteristics, the transfer temperature, the electrical reliability, the birefringence, and the like have an upper limit and a lower limit in each embodiment.

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, and in other embodiments, the content of the compound is 4 to 30% by mass, and further In another embodiment, the content of the compound is 5 to 30% by mass, and in other embodiments, the content of the compound is 7 to 30% by mass, and in other embodiments, the content of the compound is 9 to 30% by mass. Further, in still another embodiment, the content of the compound is 11 to 30% by mass, and in still another embodiment, the content of the compound is 13 to 30% by mass. In still another embodiment, the content of the compound is 14 to 30% by mass. In still another embodiment, the content of the compound is from 16 to 30% by mass. Further, in still another embodiment, the content of the compound is 20 to 30% 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, and in other embodiments, the content of the compound is 2 to 25% by mass, and in other embodiments, The content of the compound is 2 to 20% by mass, and in 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, and further In another embodiment, the content of the compound is 2 to 5% by mass.

Further, in the case where 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 preferred to form a plurality of compounds represented by the formula (XIII).

Moreover, in the case of a liquid crystal display element having a small driving voltage, The content of the compound represented by the formula (XIII) is preferably a plurality.

Further, in the case of a liquid crystal display device used in a low-temperature environment, it is suitable to make the content of the compound represented by the general 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 general formula (XIII) small.

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

(wherein R ¹³ 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 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. It is preferably 5% by mass or more and 20% by mass or less, and particularly preferably 10% by mass or more and 15% by mass or less.

Further, the compound represented by the formula (XIII-1) is preferably a compound represented by the formula (48.1) to the formula (48.4), and a compound represented by the formula (48.2) is preferred.

Further, the compound represented by the formula (M) is preferably a compound selected from the group of compounds represented by the formula (XIV). Except for the compounds represented by the general formula (i)

(wherein R ¹⁴ represents an alkyl group having 1 to 7 carbon atoms, an alkenyl group having 2 to 7 carbon atoms or an alkoxy group having 1 to 7 carbon atoms; and X ¹⁴¹ to X ¹⁴⁴ each independently represent 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-, m ¹⁴ is 0 or 1).

The type of the compound that can be combined is not limited, but may be appropriately combined in each embodiment 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, other embodiments of the present invention are two types. Alternatively, still another embodiment of the present invention is of three types. Further, still another embodiment of the present invention is of four types. Alternatively, still another embodiment of the present invention is of five types. Alternatively, still another embodiment of the present invention is six or more types.

The content of the compound represented by the formula (XIV), considering the low temperature The properties of the solubility, the transfer temperature, the electrical reliability, and the birefringence have an upper limit and a lower limit in each embodiment.

For example, in one embodiment of the present invention, the content of the compound is from 3 to 40% by mass based on the total mass of the liquid crystal composition of the present invention, and in other embodiments, the content of the compound is from 7 to 40% by mass, and further In other embodiments, the content of the compound is 8 to 40% by mass, and in other embodiments, the content of the compound is 11 to 40% by mass, and in other embodiments, the content of the compound is 12 to 40% by mass. Further, in still another embodiment, the content of the compound is 16 to 40% by mass, and in still other embodiments, the content of the compound is 18 to 40% by mass. In still another embodiment, the content of the compound is from 19 to 40% by mass. Further, in still another embodiment, the content of the compound is 22 to 40% by mass. In still another embodiment, the content of the compound is from 25 to 40% by mass.

Further, for example, in one embodiment of the present invention, the content of the compound is from 3 to 40% by mass based on the total mass, and in other embodiments, the content of the compound is from 3 to 35% by mass, and in still other embodiments The content of the compound is 3 to 30% by mass, and in other embodiments, the content of the compound is 3 to 25% by mass, and in still other embodiments, the content of the compound is 3 to 20% by mass, and further In another embodiment, the content of the compound is from 3 to 15% 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 compound having a content represented by the general formula (XIV). Further, in the case of a liquid crystal composition of a liquid crystal display element having a fast reaction speed, a compound represented by the general formula (XIV) is used. It is suitable to make the content less.

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

(wherein R ¹⁴ represents an alkyl group having 1 to 7 carbon atoms, an alkenyl group having 2 to 7 carbon atoms or an alkoxy group having 1 to 7 carbon atoms, 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 is preferable to combine one to three types in consideration of solubility at low temperature, transfer temperature, electrical reliability, birefringence, and the like.

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

(wherein R ¹⁴ represents an alkyl group having 1 to 7 carbon atoms, an alkenyl group having 2 to 7 carbon atoms or an alkoxy group having 1 to 7 carbon atoms).

The content of the compound represented by the formula (XIV-1-1) is preferably 2% by mass or more, more preferably 3% by mass or more, and 7 parts by mass based on 100% by mass of the total amount of the liquid crystal composition of the present invention. % or more is preferable, 10% by mass or more is preferable, and 18% by mass or more is particularly preferable. Further, in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like, the maximum ratio is preferably 30% by mass or less, preferably 27% by mass or less, more preferably 24% by mass or less, and even less than 21% by mass. Very good.

Further, the compound represented by the formula (XIV-1-1), specific The compound represented by the formula (51.1) to the formula (51.4) is preferred, and the compound represented by the formula (51.1) is more preferably contained.

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

(wherein R ¹⁴ represents an alkyl group having 1 to 7 carbon atoms, an alkenyl group having 2 to 7 carbon atoms or an alkoxy group having 1 to 7 carbon atoms).

The content of the compound represented by the formula (XIV-1-2) is preferably 1% by mass or more and 15% by mass or less, and preferably 3% by mass or more and 13% by mass based on 100% by mass of the total amount of the liquid crystal composition of the present invention. The following is more preferable, and 5 mass% or more and 11 mass% or less are preferable, and 7 mass% or more and 9 mass% or less are especially preferable.

Further, the compound represented by the formula (XIV-1-2), specifically, the compound represented by the formula (52.1) to the formula (52.4) is preferable, and the compound represented by the formula (52.4) is more preferably contained. .

Further, the compound represented by the formula (XIV) is preferably a compound represented by the formula (XIV-2). Except for the compounds indicated in (i).

(wherein R ¹⁴ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms; and X ¹⁴¹ to X ¹⁴⁴ each independently represent a fluorine atom or A hydrogen atom, 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 may be appropriately combined in each embodiment 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, other embodiments of the present invention are two types. Alternatively, still another embodiment of the present invention is of three types. Further, still another embodiment of the present invention is of four types. Alternatively, still another embodiment of the present invention is five or more types.

The content of the compound represented by the formula (XIV-2) has an upper limit and a lower limit in each embodiment in consideration of characteristics such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

For example, in one embodiment of the present invention, the content of the compound is from 3 to 40% by mass based on the total mass of the liquid crystal composition of the present invention, and in other embodiments, the content of the compound is from 7 to 40% by mass, and further In other embodiments, the content of the compound is 8 to 40% by mass, and in other embodiments, the content of the compound is 10 to 40% by mass, and in other embodiments, the content of the compound is 11 to 40% by mass. Further, in still another embodiment, the content of the compound is 12 to 40% by mass, and in still another embodiment, the content of the compound is 18 to 40% by mass. In still another embodiment, the content of the compound is from 19 to 40% by mass. Further, in still another embodiment, the content of the compound is from 21 to 40% by mass. Further, in still another embodiment, the content of the compound is 22 to 40% by mass.

Further, for example, in one embodiment of the present invention, the content of the compound is from 3 to 40% by mass based on the total mass, and in other embodiments, the content of the compound is from 3 to 35% by mass, and in still other embodiments The content of the compound is 3 to 25% by mass, and in other embodiments, the content of the compound is 3 to 20% by mass, and in still other embodiments, the content of the compound is 3 to 15% by mass, and further In another embodiment, the content of the compound is from 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 provide a plurality of compounds represented by the general formula (XIV-2). Also used for liquid crystal display with fast response speed In the case of the liquid crystal composition of the element, it is suitable to make the content of the compound represented by the formula (XIV-2) small.

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

(wherein R ¹⁴ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms).

The content of the compound represented by the formula (XIV-2-1) is preferably 1% by mass or more and 15% by mass or less based on 100% by mass based on the total amount of the liquid crystal composition of the present invention, and is preferably 3% by mass or more and 13% by mass. % or less is more preferable, and 5 mass% or more and 11 mass% or less are preferable, and 7 mass% or more and 9 mass% or less are particularly preferable.

Further, the compound represented by the formula (XIV-2-1), specifically, the compound represented by the formula (53.1) to the formula (53.4) is preferable, and the compound represented by the formula (53.4) is more preferably contained. .

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

(wherein R ¹⁴ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms).

The content of the compound represented by the formula (XIV-2-2) is preferably 2% by mass or more and 20% by mass or less based on 100% by mass of the total amount of the liquid crystal composition of the present invention, and is preferably 5% by mass or more and 18% by mass or less. The following is more preferable, and 9 mass% or more and 15 mass% or less are preferable, and 10 mass% or more and 14 mass% or less are preferable, and 10 mass% or more and 12 mass% or less are especially preferable.

Further, the compound represented by the formula (XIV-2-2), specifically, the compound represented by the formula (54.1) to the formula (54.4) is preferable, and the formula (54.2) and/or the formula (54.4) is contained therein. The compound represented is more preferred.

In the liquid crystal composition of the present invention, the content of the compound represented by the 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 5% by mass and 25% by mass. The amount is more preferably 5% by mass or more and 22% by mass or less, more preferably 8% by mass or more and 20% by mass or less, more preferably 10% by mass or more and 17% by mass or less, and more preferably 10% by mass or more and 15% by mass or less. Better, 10% by mass or more 12 quality % below is especially good.

Further, in the liquid crystal composition of the present invention, the content of the compound represented by the formula (54.4) is preferably 4% 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. The mass% or less is more preferably 5 mass% or more and 22 mass% or less.

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

(wherein R ¹⁴ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms).

The content of the compound represented by the formula (XIV-2-3) is preferably 5% by mass or more and 30% by mass or less, and 9% by mass or more and 27% by mass or less based on 100% by mass of the total amount of the liquid crystal composition of the present invention. The following is more preferable, and 12% by mass or more and 24% by mass or less are preferable, and 12% by mass or more and 20% by mass or less are particularly preferable.

Further, the compound represented by the formula (XIV-2-3), specifically, the compound represented by the formula (55.1) to the formula (55.4) is preferable, and the formula (55.2) and/or the formula (55.4) is contained therein. The compound represented is more preferred.

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

(wherein R ¹⁴ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms).

The type of the compound that can be combined is not limited, but it is 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, 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 formula (XIV-2-4) is an upper limit and a lower limit in each embodiment in consideration of characteristics such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence.

For example, in one embodiment of the present invention, the content of the compound is 2 to 35% by mass based on the total mass of the liquid crystal composition of the present invention, and in other embodiments, the content of the compound is 5 to 35% by mass. Further, in other embodiments, the content of the compound is 8 to 35 mass%, and in other embodiments, the content of the compound is 9 to 35 mass%, and in other embodiments, the content of the compound is 10~. In another embodiment, the content of the compound is 18 to 35 mass%, and in still another embodiment, the content of the compound is 21 to 35 mass%. In still another embodiment, the content of the compound is 22 to 35 mass%. In still another embodiment, the content of the compound is from 24 to 35% by mass.

Further, for example, in one embodiment of the present invention, the content of the compound is 2 to 35% by mass based on the total mass, and in other embodiments, the content of the compound is 2 to 30% by mass, and in other embodiments, The content of the compound is 2 to 25% by mass, and in 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 further In another embodiment, the content of the compound is 2 to 10% by mass. In still another embodiment, the content of the compound is from 8 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 general 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 suitable to make the content of the compound represented by the general formula (XIV-2-4) small.

Further, the compound represented by the formula (XIV-2-4), specifically, the compound represented by the formula (56.1) to the formula (56.4) is preferable, and the formula (56.1), the formula (56.2) and the formula are contained therein. The compound represented by (56.4) is more preferred. The content of the compound represented by the formula (56.2) relative to the liquid of the present invention The total amount of the crystal composition is preferably 100% by mass or more and 10% by mass or less.

Further, the compound represented by the formula (XIV) used in the liquid crystal composition of the present invention is preferably a compound represented by the formula (XIV-3).

(wherein R ¹⁴ represents an alkyl group having 1 to 7 carbon atoms, an alkenyl group having 2 to 7 carbon atoms or an alkoxy group having 1 to 7 carbon atoms).

The content of the compound represented by the formula (XIV-3) is 1% by mass or more and 15% by mass or less based on the total amount of the liquid crystal composition of the present invention, in consideration of solubility in a low temperature, a transfer temperature, electrical reliability, and the like. It is more preferably 4% by mass or more and 15% by mass or less, more preferably 4% by mass or more and 13% by mass, more preferably 4% by mass or more and 11% by mass or less, and particularly preferably 4% by mass or more and 9% by mass or less.

The compound used in the invention of the present invention does not have a peracid (-CO-OO-) structure in the molecule. Further, in view of the reliability and long-term stability of the liquid crystal composition, it is preferred not to use a compound having a carbonyl group. Further, in the case of the stability due to UV irradiation, it is desirable to use a compound which does not use a chlorine atom. It is also preferred to construct a compound having a 6-membered ring only for the ring within the molecule.

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 does not contain the best.

When the stability due to the UV irradiation is emphasized, the content of the chlorine atom-substituted compound is preferably 15% by mass or less based on the total mass of the composition, and more preferably 10% by mass or less, and more preferably 5% by mass or less. For better, it is not optimal for inclusion.

It is preferred that the content of the compound having a ring structure of all 6 members in the molecule is made into a plurality of compounds, and the content of the compound having a ring structure of all 6 members in the molecule is 80% by mass based on the total mass of the composition. The above is preferable, and it is more preferably 90% by mass or more, and more preferably 95% by mass or more, and it is preferable that the liquid crystal composition is substantially composed only of a compound having a ring structure of 6 members in the molecule.

In order to suppress deterioration due to oxidation of the liquid crystal composition, the content of the compound having a cyclohexene group as a ring structure is made small. The content of the compound having a cyclohexene group is preferably 10% by mass or less based on the total mass of the composition, more preferably 5% by mass or less, and most preferably not contained.

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.

(wherein, 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. For PSA display components, dimethacrylate derivatives are particularly good

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 compound which represents a single bond or one which is a single bond and the other represents an alkylene group having 1 to 8 carbon atoms or -O-(CH ₂ ) _s - is preferred. In this case, an alkyl group of 1 to 4 is preferred, and a 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. . C represents a ring structure other than a single bond, and a bond group other than the Z ²⁰¹ single bond is preferred, and M ²⁰¹ is a single bond, and a Z ²⁰¹ single bond is preferred.

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

(wherein 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, in terms of the polymerizable monomer, the general formula (XX-1) to the general formula (XX-4) are particularly preferable, and the general formula (XX-2) is preferred.

(wherein, 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).

(wherein 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 such that the oxygen atoms are not directly adjacent to each other. Substituted by -O-, -CH=CH-, -CO-, -OCO-, -COO-, -C≡C-, -CF ₂ O-, -OCF ₂ -, M ^Q represents trans-1,4 - a cyclohexyl group, a 1,4-phenylene group 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 -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 10 carbon atoms, A linear alkoxy group, a CH ₂ group substituted with -OCO- or -COO-, a linear alkyl group, a branched alkyl group, a branched alkoxy group, and a CH ₂ group substituted with -OCO- Or a branched alkyl group of -COO- is preferably a linear alkyl group having 1 to 20 carbon atoms, a linear alkyl group in which one CH ₂ group is substituted with -OCO- or -COO-, a branched alkane More preferably, the branched, branched alkoxy group, and one CH ₂ group are substituted with a branched alkyl group of -OCO- or -COO-. M ^Q represents a trans-1,4-cyclohexylene group, a 1,4-phenylene group or a single bond, but a trans-1,4-cyclohexylene group or a 1,4-phenylene group is preferred.

The compound represented by the formula (Q), more specifically, the compound represented by the following formula (Q-a) to formula (Q-d) is preferred.

In the 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 preferably 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 is a linear alkyl group having 1 to 8 carbon atoms or Branched chain alkyl groups are preferred. Among the compounds represented by the formula (Qa) to the formula (Qd), the compound represented by the formula (Qc) and the formula (Qd) is more preferable.

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

<Liquid crystal display element>

The liquid crystal display element containing the polymerizable compound of the present invention is a liquid crystal display element which is used to control the liquid crystal alignment ability by polymerization of the polymerizable compound contained in the ultraviolet light, and to control the amount of light transmitted by the birefringence of the liquid crystal composition. . For liquid crystal display elements, it can be used AM-LCD (active matrix liquid crystal display element), TN (nematic liquid crystal display element), STN-LCD (twisted nematic liquid crystal display element), OCB-LCD, and IPS-LCD (planar conversion liquid crystal display element), but Particularly useful for AM-LCDs, it can be used for transmissive or reflective liquid crystal display elements.

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, a thin film diode, or a metal insulator metal specific resistance element 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. It is more preferable that 1.5 to 10 μm is used, and in the case of using a polarizing plate, it is preferable to adjust the product of the refractive index anisotropy Δn of the liquid crystal and the thickness d of the liquid crystal cell in such a manner that the contrast is maximized. Also, when there are two polarizing plates, it can be adjusted. The polarization axis of each polarizing plate is adjusted so that the viewing angle or contrast becomes 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. In the case where the liquid crystal composition containing the polymerizable compound is polymerized in a state of being sandwiched between two substrates, at least the substrate on the irradiation surface side must be appropriately provided for the active energy ray. Transparency. 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 the plastic substrate, cellulose derivatives such as cellulose, triethyl fluorenyl cellulose, and diethyl hydrazine cellulose; polycycloolefin derivatives, polyethylene terephthalate, and poly naphthalene dicarboxylic acid can be used. Polyester such as ethylene glycol Polypropylene, polyethylene, etc., polycarbonate, polyvinyl alcohol, polyvinyl chloride, polyvinylidene chloride, polyamide, polyimine, polyamidamine, polystyrene, As the polyacrylate, the polymethyl methacrylate, the polyether oxime, and the 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 is usually nitrided by a chemical vapor phase epitaxy (CVD) technique or the like. Film (SiNx), oxide film (SiOx), and the like.

Further, the first alignment film 105 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 applied alignment agent solution is obtained by temporarily drying the solvent and evaporating the light having an arbitrary deflection (polarized light) to obtain an alignment film having an alignment ability in an arbitrary direction.

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 through 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 provided on the color filter 203 (the outer layer (201) is provided on the color filter 203 for the purpose of flattening the surface if necessary). The transparent electrode 204 is preferably a light transmittance, and the resistance is preferably The smaller one is better. 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. Fig. 2 is a view showing an exposure processing procedure in which a columnar spacer formed on a black matrix is used as a mask pattern.

Coating a columnar spacer on the transparent electrode 204 of the front plate Used (without colorant) resin solution. 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 was peeled off, and the resin layer was baked to complete the columnar spacer (302, 0304 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 water-soluble resin such as a PVA-strolbazo 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 a curable resin composition for adding a polymerization initiator to an epoxy-based or acrylic-based photocurable, thermosetting, or photo-curable resin can be used. Further, in order to control moisture permeability, elastic modulus, viscosity, and the like, a filler derived from an inorganic substance or an organic substance may be added. The shape of these fillers is not special Limited, spherical, fibrous, amorphous, and 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 such a manner that the liquid crystal does not leak), the sealing material coating shape is formed into a closed shape.

Liquid crystal is dropped into the closed 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, the front plate and the back plate are adsorbed on a stage having a mechanism for adsorbing the substrate such as an electrostatic chuck, and the first alignment film of the front plate and the first alignment film of the back plate are paired. Positioned in a position where the sealing material is not adjacent to the other substrate Set (distance). 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, "% by mass" in the compositions 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 295K (alias: birefringence)

△ ε: dielectric anisotropy in 295K

η: viscosity in 295K (mPa‧s)

Rotational viscosity (mPa‧s) in γ1: 295K

Initial voltage holding ratio (initial VHR): Voltage holding ratio (% by mass) at 50 ° C under the condition of a frequency of 60 Hz and a voltage of 4 V

Voltage holding ratio after heating (VHR after heating): Voltage holding ratio (% by mass) measured under the same conditions as the initial VHR after maintaining for 1 hour in an environment of 150 ° C

Afterimage:

The image sticking evaluation of the liquid crystal display element was performed after the designated fixed pattern was displayed for 1440 hours in the display area, and the degree of image sticking of the fixed pattern when the full screen was uniformly displayed was visually evaluated by the following four stages.

◎: no residual image

○: There is only residual image, which is tolerable.

△: There is residual image, and it is unacceptable.

×: There is a residual image, and it is quite poor.

Volatile/manufacturing device contamination:

The evaluation of the volatility of the liquid crystal material was carried out by observing the operating state of the vacuum stirring defoaming mixer with a stroboscope, and visual observation of the foaming of the liquid crystal material was carried out. Specifically, a liquid crystal composition of 0.8 kg was placed in a special container of a vacuum stirring defoaming mixer having a capacity of 2.0 L, and the vacuum was operated at a revolution speed of 15 S ^-1 and a rotation speed of 7.5 S ^-1 at a degassing rate of 4 kPa. The agitating defoaming mixer was carried out in accordance with the following four-stage evaluation depending on the time from the start of foaming.

◎: It takes 3 minutes or more to foam. The possibility of volatile contamination of the device is low.

○: The foaming time was 1 minute or more and less than 3 minutes. There are doubts about the device that is slightly contaminated by volatilization.

△: The foaming time was 30 seconds or more and less than 1 minute. Because the volatilization is contaminated by the device.

×: The foaming is within 30 seconds. There are concerns about significant contamination of the unit due to volatilization.

Process suitability:

The process suitability is based on the ODF process. Using a fixed metering pump, 40pL of liquid crystal is added to each drop and 100000 times, as follows: 0~200 times, 201~400 times, 401~600 times, ‧‧‧‧99801 The change in the amount of liquid crystal per 200 drops of ~100,000 times was evaluated in the following four stages.

◎: The change is extremely small (the liquid crystal display element can be stably produced)

○: Only changes are acceptable

△: There is a change and it is unacceptable (the yield will deteriorate due to the occurrence of spots)

×: There is a change and it is quite poor (liquid crystal leakage or vacuum bubbles will occur)

Low temperature solubility:

Evaluation of Solubility at Low Temperature After modulating the liquid crystal composition, 0.5 g of the liquid crystal composition was weighed in a 1 mL sample vial, and in a temperature-controlled test cell, 1 cycle of "-20 ° C (for 1 hour) → temperature rise was continued. (0.2 ° C / min) → 0 ° C (for 1 hour) → temperature (0.2 ° C / min) → 20 ° C (for 1 hour) → cooling (-0.2 ° C / min) → 0 ° C (for 1 hour) → The temperature change of the temperature drop (-0.2 ° C / minute) → -20 ° C" was observed by visual observation of the occurrence of precipitates of the liquid crystal composition, and the evaluation was carried out in the following four stages.

◎: No precipitate was observed for 600 hours or more.

○: No precipitate was observed for 300 hours or longer.

△: Precipitates were observed within 150 hours.

×: Precipitates were observed within 75 hours.

(Example 1 and Comparative Examples 1 to 3)

The liquid crystal composition having the composition shown in Table 1 was adjusted using the following compounds. The physical property values of the liquid crystal compositions obtained are shown in Table 2.

(Examples 2 to 4)

The liquid crystal composition having the composition shown in Table 3 was prepared using the following compounds. The physical property values of the liquid crystal compositions obtained are shown in Table 4.

(Examples 5 to 7)

The liquid crystal composition having the composition shown in Table 5 was adjusted using the following compounds. The physical property values of the liquid crystal compositions obtained are shown in Table 6.

(Examples 8 to 10)

The liquid crystal composition having the composition shown in Table 7 was adjusted using the following compounds. The physical property values of the liquid crystal compositions obtained are shown in Table 8.

(Examples 11 to 13)

The liquid crystal composition having the composition shown in Table 9 was adjusted using the following compounds. The physical property values of the liquid crystal compositions obtained are shown in Table 10. .

As shown in Table 1, the liquid crystal composition of Comparative Example 1 contained the compounds represented by the general formulae (ii-1) and (ii-2) with respect to Example 1, and the comparative example 1 was replaced with no compound and replaced with Formulas (3.1), (3.3), and (3.4) belonging to the general formula (1-2) having similar structures are contained. The liquid crystal composition of Comparative Example 1 had Δn equivalent to that of the liquid crystal composition of Example 1, and although it had a certain high Tni, the viscosity (η, γ1) was greatly improved.

The compound represented by the formula (37.2) contained in the formula (i) was contained in relation to Example 1, and the liquid crystal composition of Comparative Example 2 did not contain the compound, but contained (45.3) and (45.4) having similar structures. The compound represented is substituted. The liquid crystal composition of Comparative Example 2 had the same Δn as that of the liquid crystal composition of Example 1, and although it had a large Δε, Tni became low, and the viscosity (η, γ1) was greatly increased.

The compound represented by the formula (37.2) contained in the formula (i) is contained in the first embodiment, and the liquid crystal composition of the comparative example 3 is not contained, but contains a compound represented by (44.4) having a structure similar thereto. . Comparative Example 3 The crystal composition has Δn equivalent to that of the liquid crystal composition of Example 1, and although it has a large Δε, Tni becomes low, and the viscosity (η, γ1) greatly increases.

Further, as shown in Tables 4, 6, 8, and 10, in the liquid crystal compositions of Examples 2 to 13, the decrease in VHR after heating was small, and the image sticking, volatility, and process suitability were small. The evaluation of the solubility in low temperature gave good results.

Claims (5)

A liquid crystal composition containing at least one compound represented by the formula (i), at least one selected from the group consisting of a compound represented by the formula (ii-1) and a compound represented by the formula (ii-2) a compound represented by the formula (M), and a compound represented by the formula (L), wherein the compound represented by the formula (M) is a compound represented by the formula (X), and the formula (X) The compound represented by the formula (X-6) and/or the compound represented by the formula (XI-1), and the compound represented by the formula (L) is a compound represented by the formula (II-2). ^Wherein R ⁱ¹ represents an alkyl group having 1 to 8 carbon atoms, n ⁱ¹ represents 2, X ⁱ¹ represents a hydrogen atom or a fluorine atom, A ⁱ¹ represents a trans-1,4-cyclohexylene group or a hydrogen atom may be a fluorine atom. Or a 1,4-phenylene group substituted with a chlorine atom, Z ⁱ¹ represents a single bond, and each of A ⁱ¹ may be the same or different; In the formula, R ^M1 represents an alkyl group having 1 to 8 carbon atoms, and one or two or more of the -CH ₂ - groups which are not adjacent to each other may be independently -CH=CH-, -C≡C -, -O-, -CO-, -COO- or -OCO-substituted, PM represents 0, 1, 2, 3 or 4, and C ^M1 and C ^M2 each independently represent a group selected from the group consisting of: (d) 1,4-cyclohexylene, one of -CH ₂ - or two or more -CH ₂ - which are not adjacent to this group 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), group (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, which may be The same or different, PM is 2, 3 or 4 and C ^M2 is a plurality of cases, 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 group, a trifluoromethyl group, a fluoromethoxy group, a difluoromethoxy group, a trifluoromethoxy group or a 2,2,2-trifluoroethyl group; however, the compound represented by the formula (i) and the formula (ii) -1) a compound represented by the formula and a compound represented by the formula (ii-2); In the formula, R ^L1 and R ^L2 each independently represent an alkyl group having 1 to 8 carbon atoms, and one of the alkyl groups or two or more non-adjacent-CH ₂ - groups may 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 are each independently selected from the following The group of the group consisting of: (a) 1,4-cyclohexylene, one of the -CH ₂ - or the non-contiguous two or more -CH ₂ - present in the group may be substituted with -O-, And (b) 1,4-phenylene group, 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), a group (b) each independently substituted with a cyano group, a fluorine atom or a chlorine atom, and L ^L1 and L ^L2 each independently represent a single bond, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, -OCF ₂ -, -CF ₂ O-, -CH=NN=CH-, -CH=CH-, -CF=CF- or -C≡C- OL is 2 or 3 and L ^L2 is a plurality of cases. 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. Different from each other, the compound represented by the formula (i) and the compound represented by the formula (ii-1) Formula (ii-2) except the compound represented by; In the formula, X ¹⁰¹ to X ¹⁰⁴ represent a fluorine atom, Y ¹⁰ represents a fluorine atom, Q ¹⁰ represents -CF ₂ O-, and R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms and 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-phenylene or However, the hydrogen atom on the 1,4-phenylene group may be substituted by a fluorine atom; Wherein R ¹⁰ represents an alkyl group having 1 to 5 carbon atoms; Wherein R ¹¹ represents an alkyl group having 1 to 5 carbon atoms; R ²³ represents an alkenyl group having 2 to 5 carbon atoms, and R ²⁴ represents an alkyl group having 1 to 5 carbon atoms. The liquid crystal composition of claim 1, wherein A ⁱ¹ in the formula (i) is a trans-1,4-cyclohexylene group. A liquid crystal display element for active matrix driving, which is used as an application The liquid crystal composition of the first or second aspect of the patent. A liquid crystal display element for an IPS mode, an OCB mode, an ECB mode, a VA mode, a VA-IPS mode or an FFS mode, which is characterized in that a liquid crystal composition as in the first aspect of the patent application is used. A liquid crystal display using the liquid crystal display element for active matrix driving according to item 3 of the patent application or the liquid crystal display element for FFS mode according to claim 4 of the patent application.