TW201527501A - Liquid crystal composition, liquid crystal display element using same, and liquid crystal display using same - Google Patents

Abstract

The present invention provides a liquid crystal composition which comprises at least one compound of a general formula (i) and at least one compound of a general formula (ii): wherein R<SP>i1</SP> represents a C1 to C8 alkyl group; wherein A<SP>i1</SP> represents a 1,4-cyclohexylene group (in the 1,4-cyclohexylene group, one or more non-adjacent -CH2- groups may be replaced with -O-), a 1,4-phenylene group (one or more hydrogen atoms of the 1,4-phenylene group may be substituted by fluorine atoms) or a single bond; wherein R<SP>ii1</SP> represents a C1 to C8 alkyl group in which one or more non-adjacent -CH2- groups may be replaced, independently with -CH=CH-, -C ≡ C-, -O-, -CO-, -COO- or -OCO-; wherein R<SP>ii2</SP> represents fluorine atom, chlorine atom, cyano group, or a C1 to C8 alkyl group in which one or more non-adjacent -CH2- groups may be replaced, independently with -CH=CH-, -C ≡ C-, -O-, -CO-, -COO- or -OCO-, one or more hydrogen atoms of the alkyl group may be substituted by fluorine atoms or chlorine atoms; wherein A<SP>ii1</SP> and A<SP>ii2</SP> each independently represents a 1,4-cyclohexylene group (in the 1,4-cyclohexylene group, one or more non-adjacent -CH2- groups may be replaced with -O-), a 1,4-phenylene group (one or more hydrogen atoms of the 1,4-phenylene group may be substituted by fluorine atoms); wherein Z<SP>ii1</SP> and Z<SP>ii2</SP> each independently represents a single bond, -CH2CH2-, -(CH2)4-, -OCH2-, -CH2O-, -OCF2-, -CF2O-, -COO-, -OCO- or -C ≡ C-; wherein m<SP>ii1</SP> and m<SP>ii2</SP> each independently represents 0, 1, 2 or 3, with the proviso that m<SP>ii1</SP> plus m<SP>ii2</SP> equals 1, 2, 3 or 4; and when m<SP>ii1</SP> and/or m<SP>ii2</SP> represents 2 or 3, the multiple A<SP>ii1</SP> may be the same or different from each other, the multiple Z<SP>ii1</SP> may be the same or different from each other, the multiple A<SP>ii2</SP> may be the same or different from each other, and the multiple Z<SP>ii2</SP> may be the same or different from each other.

Description

Liquid crystal composition, liquid crystal display element, and liquid crystal display

The present invention relates to a nematic liquid crystal composition having a dielectric anisotropy (Δε) as a liquid crystal display material which has a positive or negative value (Δε), and a liquid crystal display element using the same And LCD display.

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, several kinds are used. The compound of the tens of types is composed of a liquid crystal composition.

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 a positive or negative value and the absolute value is large, the viscosity (η) is small, and the high nematic phase-isotropic liquid phase transition temperature (Tni) is required. Further, in order to set Δn × d of the product of Δn and the cell gap (d) to a predetermined value, it is necessary to adjust the Δn synergistic cell gap of the liquid crystal composition to an appropriate range. Further, when a liquid crystal display element is applied to a television or the like, since a high-speed reactivity is emphasized, a liquid crystal composition having a small rotational viscosity (γ ₁ ) is required.

In the composition of the liquid crystal composition which is aimed at high-speed reactivity, for example, a compound represented by the following formula (A-1) or formula (A-2) in which a combination of Δε is a positive liquid crystal compound and Δ are disclosed. ε is a liquid crystal composition used for the compound represented by the following formula (B) of a neutral liquid crystal compound. These liquid crystal compositions are characterized in that the liquid crystal compound having a positive liquid crystal compound of Δε has a structure of -CF ₂ O-, and the liquid crystal compound having a neutral Δε has an alkenyl group. These characteristics are widely known in the field of liquid crystal compositions (see Patent Documents 1 to 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 larger than 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 smart phones that have been popular recently are controlled within a certain range from the optimum value in order to minimize the amount of liquid crystal injection that is most suitable. It is difficult in itself. Therefore, in order to keep the yield of the liquid crystal display element high, for example, there is little influence on the sudden pressure change or impact in the dropping device 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 maintains the characteristics or performance desired for the liquid crystal display element which is a high-speed reaction property, and the high specific resistance which has been conventionally emphasized. In addition to the value, the 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 or negative Δ ε and a liquid crystal display element using the liquid crystal phase having a wide temperature range, low viscosity, and low temperature solubility. Good, high specific resistance or voltage holding ratio, stable heat or light, and good liquid crystal display element which is difficult to produce display defects such as image sticking or dripping marks and excellent display quality.

The present inventors reviewed various liquid crystal compounds and various chemical substances, and found that the above problems can be solved by combining specific liquid crystal compounds, and the present invention has been completed. That is, the first aspect of the present invention is the liquid crystal composition below, and the second aspect of the present invention is the liquid crystal element below, and the third aspect of the present invention is the liquid crystal display below.

[1] A liquid crystal composition containing any one or two or more of the compounds represented by the following formula (i) and containing any one of the compounds represented by the following formula (ii) or 2 or more types,

(wherein R ⁱ¹ represents an alkyl group having 1 to 8 carbon atoms, and A ⁱ¹ represents a 1,4-cyclohexylene group (1 -CH ₂ - present in the group or 2 or more -CH not adjacent) ₂ - may be substituted with -O-), 1,4-phenylene (one or more hydrogen atoms present in the group may be substituted with a fluorine atom) or a single bond, and R ⁱⁱ¹ represents a carbon number 1 to 8 alkyl groups, one of the alkyl groups or two or more non-adjacent -CH ₂ - may be independently -CH=CH-, -C≡C-, -O-, -CO- , -COO- or ^-OCO- substituted, R ⁱⁱ² represents a fluorine atom, a chlorine atom, a cyano group or an alkyl group having 1 to 8 carbon atoms, and one of the alkyl groups or two or more non-adjacent -CH ₂ - each independently may be substituted by -CH=CH-, -C≡C-, -O-, -CO-, -COO- or -OCO-, wherein one or more hydrogen atoms of the alkyl group are each Independently substituted by a fluorine atom, A ⁱⁱ¹ and A ⁱⁱ² each independently represent a 1,4-cyclohexylene group (one of the -CH ₂ - or a non-contiguous two or more -CH ₂ - present in the group may be substituted Is -O-), 1,4-phenylene (one or two or more hydrogen atoms present in the group may be substituted with a fluorine atom), and Z ⁱⁱ¹ and Z ⁱⁱ² 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-, m ⁱⁱ¹ and m ⁱⁱ² each independently represent 0, 1 2, 3, but m ⁱⁱ¹ + m ⁱⁱ² is 1, 2, 3 or 4, where A ⁱⁱ¹ and Z ⁱⁱ¹ are plural, each A ⁱⁱ¹ and each Z ⁱⁱ¹ may be the same or different from each other, A ⁱⁱ² and Z ⁱⁱ² is a plurality of cases, and each of A ⁱⁱ² and each of Z ⁱⁱ² may be the same or different from each other).

[2] The liquid crystal composition according to the above [1], which contains one or more kinds of R ⁱⁱ² in the above formula (ii), which is a fluorine atom, a trifluoromethyl group, a trifluoromethoxy group or a cyano group. compound of.

[3] The liquid crystal composition according to the above [1] or [2], wherein one or more of R ⁱⁱ² in the above formula (ii) is an alkyl group having 1 to 8 carbon atoms or a carbon atom. A compound having 1 to 8 alkoxy groups.

[4] The liquid crystal composition according to any one of [1] to [3] which contains one or more kinds of at least one 2,3-difluorobenzene-1,4-diyl group. The compound represented by the above formula (ii).

[5] The liquid crystal composition according to any one of the above [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 ( One of the b) and/or two or more hydrogen atoms may be independently substituted by a cyano group, a fluorine atom or a chlorine atom, and L ^L1 and L ^L2 each independently represent a single bond, -CH ₂ CH ₂ -, -( CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, -OCF ₂ -, -CF ₂ O-, -CH=NN=CH-, -CH=CH-, -CF=CF- or -C≡C-, 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 stored in plural In the case of the above, they may be the same or different. Except for the compounds represented by the formula (ii).

[6] The liquid crystal composition according to any one of the above [1] to [5], which contains a compound represented by the following formula (M), (wherein R ^M1 represents an alkyl group having 1 to 8 carbon atoms, and one of the alkyl groups or two or more non-adjacent -CH ₂ - groups may be independently -CH=CH-, -C≡C -, -O-, -CO-, -COO- or -OCO-substitution, PM represents 0, 1, 2, 3 or 4, and C ^M1 and C ^M2 each independently represent a group selected from the group consisting of: ( d) 1,4-cyclohexylene (one of -CH ₂ - or two or more non-contiguous -CH ₂ - may be substituted by -O- or -S-) and (e) 1,4-phenylene (one of -CH= or two or more non-contiguous -CH= may be substituted by -N=), the above-mentioned base (d), base (e) One or more than two or more hydrogen atoms 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 In the case of 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, X ^M1 and X ^M3 each independently represent a hydrogen atom, a chlorine atom or a fluorine atom, X ^M2 represents a hydrogen atom, An atom, a chlorine atom, a cyano group, a trifluoromethyl group, a fluoromethoxy group, a difluoromethoxy group, a trifluoromethoxy group or a 2,2,2-trifluoroethyl group; however, represented by the formula (ii) Except for compounds).

The liquid crystal composition of any one of the above [1] to [6] which contains the compound represented by the following General formula (X"), (wherein R ^X1 and R ^X2 independently of each other represent an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms or an alkenyl group having 2 to 10 carbon atoms, and 1 present in such a group The methylene group or two or more methylene groups which are not adjacent may be substituted with -O- or -S-, and one or more hydrogen atoms present in the groups may be substituted with a fluorine atom. Or a chlorine atom, u and v independently of each other represent 0, 1 or 2, but u+v is 2 or less, and M ^X1 , M ^X2 and M ^X3 independently of each other represent a group selected from the group consisting of: (a) trans -1,4-cyclohexylene (one methylene group present in this group or two or more methylene groups not adjacent to each other may be substituted with -O- or -S-), (b) 1,4 - a phenyl group (one of which is present in this group - CH = or two or more of which are not adjacent - CH = may be substituted with -N =), and the above-mentioned group (a) or group (b) Each of the hydrogen atoms may be substituted by a cyano group, a fluorine atom, a trifluoromethyl group, a trifluoromethoxy group or a chlorine atom, but M ^X2 and/or M ^{X3 may} be plural, and they may be the same. distinct, L ^X1, L ^X2 and ^X3 independently of one another, denote a single bond L, -COO -, - OCO -, - CH 2 CH 2 -, - (CH 2) 4 -, - OCH 2 -, - CH 2 O- _{-OCF 2 -, - CF 2 O} -, - CH = CH- or -C≡C-, L ^X1 and / or L ^X3 there is a case where a plurality of their different can also be the same, X ^X1 And X ^X2 independently of each other represents a trifluoromethyl group, a trifluoromethoxy group or a fluorine atom, but any of X ^X1 and X ^X2 represents a fluorine atom; however, the compound represented by the formula (ii) and the formula (L) Except for the compounds indicated).

[8] A liquid crystal display device characterized by using the liquid crystal composition according to any one of the above [1] to [7].

[9] A liquid crystal display device according to any one of the above [1] to [7], wherein the liquid crystal composition according to any one of the above [1] to [7] is used.

[10] A liquid crystal display device according to any one of [1] to [7], wherein the liquid crystal composition according to any one of the above [1] to [7] is used.

[11] A liquid crystal display device according to any one of the above [1] to [7], wherein a liquid crystal composition according to any one of the above [1] to [7] is used.

[12] A liquid crystal display device according to any one of [1] to [7], wherein the liquid crystal composition according to any one of the above [1] to [7] is used.

[13] A liquid crystal display device according to any one of the above [1] to [7], wherein the liquid crystal composition according to any one of the above [1] to [7] is used.

[14] A liquid crystal display device according to any one of the above [1] to [7], wherein a liquid crystal composition according to any one of the above [1] to [7] is used.

[15] A liquid crystal display device using the liquid crystal display device according to any one of the above [8] to [14].

The liquid crystal composition having positive or negative dielectric anisotropy of the present invention has a liquid crystal phase in a wide temperature range, has a viscosity which is more greatly reduced, has a good solubility at a low temperature, and has a specific resistance or voltage retention ratio. The degree of change in heat or light is minimal. Therefore, the liquid crystal composition of the present invention has high practicability (applicability) for a liquid crystal product, and a liquid crystal display element such as an IPS type or an FFS type using the liquid crystal composition can achieve a high-speed reaction. . In addition, the liquid crystal composition of the present invention can stably exhibit its performance, and the display defects caused by the manufacturing process can be suppressed, and the liquid crystal display element can be manufactured with high yield. And it is very useful.

[Formation of the Invention]

The liquid crystal composition having positive or negative dielectric anisotropy according to the first embodiment of the present invention has a component (A) having a positive or negative dielectric property. The component (A) is preferably one composed of a compound having a dielectric anisotropy of 2 or more or -2 or less. Further, the dielectric anisotropy of the compound refers to a value extrapolated from the measured value of the dielectric anisotropy of the composition prepared by adding the liquid crystal composition having a dielectric anisotropy of about 0 at 25 °C.

"%" in the following composition means "% by mass" unless otherwise specified.

The component (A) contains any one or two or more of the compounds represented by the following formula (i), and one or more of the compounds represented by the following formula (ii). .

<Compound represented by the formula (i)>

In the formula (i), R ⁱ¹ each independently represents an alkyl group having 1 to 8 carbon atoms, but the alkyl group is preferably linear.

In the formula (i), A ⁱ¹ represents a 1,4-cyclohexylene group (one of the -CH ₂ - or a non-contiguous two or more -CH ₂ - may be substituted with -O-) And 1,4-phenylene (one or two or more hydrogen atoms present in the group may be substituted with a fluorine atom) or a single bond. The 1,4-cyclohexylene group may be of a trans type or a cis type, but a trans form is preferred.

A ⁱ¹ is preferably a 1,4-cyclohexylene group or a 1,4-phenylene group, and more preferably a 1,4-cyclohexylene group.

The content of the compound represented by the formula (i) is 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 compound is preferably 0.001% by mass, preferably 0.005% by mass, more preferably 0.01% by mass, based on the above compound. The upper limit of the content is preferably 1% by mass, preferably 0.1% by mass, and preferably 0.05% by mass.

When the content of the compound represented by the formula (i) is large, the effect as an antioxidant material increases, but the initial current value to be described later increases. On the contrary, when the amount is small, the function as an antioxidant material is not fully exerted.

A preferred combination of the lower limit and the upper limit is, for example, 0.001 to 1% by mass, 0.005 to 0.1% by mass, and 0.01 to 0.05% by mass.

In the liquid crystal composition of the present invention, the formula represented by the formula (i) The compound is one or more selected from the group consisting of 1 to 5, preferably 1 or 2, more preferably.

The compound represented by the formula (i) is preferably a compound represented by the following formula (i-a) to formula (i-d).

In the formula (ia), R ^11a is preferably a linear alkyl group having 5 to 8 carbon atoms.

In the formula (ic), R ^13a is preferably a linear alkyl group having 1 to 5 carbon atoms.

In the formula (id), R ^13a is preferably a linear alkyl group having 1 to 5 carbon atoms.

Among the compounds represented by the formula (i-a) to the formula (i-d), the compound represented by the formula (i-a) and the formula (i-c) is more preferable.

<Compound represented by the formula (ii)>

In the formula (ii), R ⁱⁱ¹ represents an alkyl group having 1 to 8 carbon atoms, and one of the alkyl groups or two or more non-adjacent-CH ₂ - groups may independently be -CH=CH-, - C≡C-, -O-, -CO-, -COO- or -OCO-. The alkyl group may be linear or branched.

R ⁱⁱ¹ is a linear alkyl group, a linear alkenyl group or a linear alkoxy group which is not substituted with a hydrogen atom, a linear alkyl group having 1 to 5 carbon atoms or a linear alkyl group having 2 to 5 carbon atoms. Alkoxy groups having 1 to 4 carbon atoms or more, a linear alkyl group having 2 to 5 carbon atoms, and an alkenyl group described below

(wherein, the ring structure is bonded to the right end) or an alkoxy group having 1 to 4 carbon atoms is more preferable.

In the formula (ii), R ⁱⁱ² represents a fluorine atom, a chlorine atom, a cyano group or an alkyl group having 1 to 8 carbon atoms, and one of the alkyl groups or two or more non-adjacent-CH ₂ - are independently selected. It may be substituted by -CH=CH-, -C≡C-, -O-, -CO-, -COO- or -OCO-, and one or two or more hydrogen atoms in the alkyl group may be independently substituted by fluorine Atomic substitution.

R ^{ii 2} is a fluorine atom or a hydrogen atom which is a substituted linear alkyl group, a linear alkenyl group or a linear alkoxy group, and a fluorine atom or a linear alkyl group having 1 to 5 carbon atoms and a carbon atom number of 2 a linear alkenyl group of ~5 or an alkoxy group having 1 to 4 carbon atoms is more preferred, a fluorine atom or a linear alkyl group having 2 to 5 carbon atoms, and an alkenyl group described below

(wherein, the ring structure is bonded to the right end) or an alkoxy group having 1 to 4 carbon atoms is more preferable.

In the formula (ii), A ⁱⁱ¹ and A ⁱⁱ² each independently represent a 1,4-cyclohexylene group (one of -CH ₂ - or a non-contiguous two or more -CH ₂ - present in the group may be substituted It is -O-), 1,4-phenylene (one or two or more hydrogen atoms present in this group may be substituted with a fluorine atom) or a single bond. The 1,4-cyclohexylene group may be a cis type or a trans type, but a trans form is preferred.

In the formula (ii), m ⁱⁱ¹ and m ⁱⁱ² each independently represent 0, 1, 2 or 3. However, m ⁱⁱ¹ +m ⁱⁱ² is 1, 2, 3 or 4, and in the general formula (ii), any one of A ⁱⁱ¹ , A ⁱⁱ² , Z ⁱⁱ¹ and Z ⁱⁱ² is one or more plural, and they are present. Can be the same or different. That is, A ⁱⁱ¹ and Z ⁱⁱ¹ are plural cases, and each A ⁱⁱ¹ may be the same or different, and each Z ⁱⁱ¹ may be the same or different, and A ⁱⁱ² and Z ⁱⁱ² are plural. In this case, each of the A ⁱⁱ² systems may be the same or different, and each of the Z ⁱⁱ² systems may be the same or different.

In the case where the liquid crystal composition containing the compound represented by the formula (ii) is excellent in the reaction rate, m ⁱⁱ¹ + m ⁱⁱ² is preferably 1 or 2, and the improvement of the upper limit temperature of the liquid crystal phase is emphasized, m ⁱⁱ¹ + It is preferable that m ⁱⁱ² is 3 or 4, and it is preferable to emphasize the balance of them, m ⁱⁱ¹ + m ⁱⁱ² is 2 or 3.

The content of the compound represented by the formula (ii) is 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, 1% is preferred, 5% is preferred, 8% is preferred, and 10% is preferred, in view of the lower limit of the content of the above compound. % is preferred, 15% is preferred, 18% is preferred, and 20% is preferred. For the upper limit of the content of the aforementioned compound, 40% is preferred, 35% is preferred, and 30% is preferred. Preferably, 27% is preferred, 25% is preferred, 23% is preferred, 20% is preferred, 18% is preferred, 15% is preferred, 13% is preferred, and 10% is preferred. good. Add the formula of formula (ii) In the case of the compound shown, the reaction rate does not deteriorate and Δ ε increases. However, when the content of the compound represented by the formula (ii) is increased, the content of the compound represented by the formula (i) must be increased.

A preferred combination of the lower limit value and the upper limit value is, for example, 1 to 30% by mass, 5 to 15% by mass, and 8 to 10% by mass. Further, the combination may be 1 to 20% by mass, 1 to 13% by mass, or 1 to 8% by mass. Further, the combination may be 5 to 30% by mass, 10 to 23% by mass, or 10 to 18% by mass.

In the liquid crystal composition of the present invention, the compound represented by the formula (ii) is one or more selected from the group consisting of 1 to 5, more preferably 1 to 3, more preferably.

When only one type of the compound represented by the formula (ii) is used, the lower limit of the content of the compound is preferably 1%, more preferably 3%, and 6% is the total mass. Preferably, 8% is preferred, and the upper limit of the content of the above compound is preferably 30%, 20% is preferred, 15% is preferred, and 12% is preferred. .

A preferred combination of the lower limit value and the upper limit value is, for example, 1 to 30% by mass, 3 to 20% by mass, 6 to 15% by mass, and 8 to 12% by mass.

When two kinds of the compounds represented by the formula (ii) are used, the lower limit of the total content of the two compounds is preferably 1%, more preferably 3%, and 6 is preferred. % is preferably 8%, and the upper limit of the total content of the above two compounds is preferably 30%, preferably 20%, and preferably 15%, based on the total mass. 12% is preferred.

A preferred combination of the lower limit value and the upper limit value is, for example, 1 to 30% by mass, 3 to 20% by mass, 6 to 15% by mass, and 8 to 12% by mass.

In a preferred embodiment of the liquid crystal composition of the present invention, one or more of R ⁱⁱ² in the formula (ii) may be exemplified by a fluorine atom, a trifluoromethyl group, a trifluoromethoxy group or a cyanide. A liquid crystal composition of a compound of the group. For the compounds, for example, the compounds represented by the following formulae (ii-a) to (ii-c) can be exemplified.

In the general formula (ii), m ⁱⁱ¹ for the case of 0, m ⁱⁱ² system is preferably 2 or 3, m ⁱⁱ² train 3 is more preferably, a compound of the following formula based formula (ii) represented by (ii-a The compound represented is more preferred.

In the general formula ^{(ii-a), X ii11} , X ii12, X ii13 and ^X ii14 each independently represent a hydrogen atom or a fluorine atom.

^X ii11 ^X ii12 and at least one of a hydrogen atom preferred system, the two lines of ^X ii12 ^X ii11 and more preferably a hydrogen atom.

The ^ii13- based fluorine atom is preferred, the X ^ii14- based fluorine atom is preferred, and the X ⁱⁱ¹³ and X ^ii14- based fluorine atoms are more preferred.

The compound represented by the formula (ii-a) is preferably a compound represented by the following formula (X-6).

(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 limited, but a compound represented by the above formula (X-6) in combination of one type or two types or more is preferable in view of low-temperature solubility, transfer temperature, electrical reliability, birefringence and the like. .

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

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% by mass or less is more preferably 2% by mass or more and 15% by mass or less is more preferably 2% by mass or more and 10% by mass or less is more preferably 2% by mass or more and 8% by mass or less is particularly preferable, and 2% by mass or more is 6 or more. The mass % or less is optimal.

In the optimum range, the content may be 2% by mass or more and 5% by mass or less, and may be 2% by mass or more and 4% by mass or less, and may be 2% by mass or more and 3% by mass or less, and may be 3% by mass or more and 6% by mass or less. It may be 3% by mass or more and 5% by mass or less, may be 4% by mass or more and 6% by mass or less, and may be 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 (44.2) 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, 2 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 12 mass% or less are especially preferable.

In a particularly preferable range, the content may be 3% by mass or more and 10% by mass or less, may be 3% by mass or more and 7% by mass or less, may be 3% by mass or more and 6% by mass or less, and may be 3% by mass or more and 5% by mass or less. It may be 3 mass% or more and 4 mass% or less, may be 4 mass% or more and 12 mass% or less, may be 4 mass% or more and 10 mass% or less, may be 5 mass% or more and 12 mass% or less, and may be 6 mass% or less. The amount of the above 12% by mass or less may be 7 mass% or more and 12 mass% or less, and may be 10 mass% or more and 12 mass% or less.

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 the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. The total mass of the material is preferably 2% by mass or more and 40% by mass or less, more preferably 3% by mass or more and 30% by mass or less, and still more preferably 4% by mass or more and 20% by mass or less, and more preferably 5% by mass or more and 15% by mass or less. The following is especially good.

In the particularly preferred range, for the aforementioned content, for example, 5 mass can be exemplified. %% or more and 12% by mass or less, 5% by mass or more and 10% by mass or less, 5% by mass or more and 9% by mass or less, 5% by mass or more and 8% by mass or less, 8% by mass or more and 15% by mass or less, and 85% by mass or more and 10% by mass or less. Hereinafter, it is 9% by mass or more and 15% by mass or less, and 10% by mass or more and 15% by mass or less.

In the case where the formula (ii) and m ⁱⁱ¹ are 1, A ⁱⁱ¹ is a 1,4-cyclohexylene group, and a Z ⁱⁱ¹ single bond is preferred. When m ⁱⁱ¹ is 1, m ⁱⁱ² is preferably 1 and the compound represented by the formula (ii) is more preferably a compound represented by the following formula (ii-b).

In the general formula (ii-b), X ⁱⁱ¹ and X ⁱⁱ² lines each independently represent a hydrogen atom or a fluorine atom identical, Z ^ii2, Z ⁱⁱ² R ⁱⁱ¹ and R ⁱⁱ² system and the formula (ii) is, R ⁱⁱ¹ and R ⁱⁱ² .

The compound represented by the formula (ii-b) is preferably a compound represented by the following formula (ii-b-n).

In the general formula (ii-bn), the same as R R ⁱⁱ¹ system and the formula (ii) of ^ii1.

The compound represented by the formula (ii-b-n) is more preferably a compound represented by the following formula (ii-b-1) to (ii-b-6). Among these, it is preferred to contain the formula (ii-b-3) and/or (ii-b-5) in the liquid crystal composition of the present invention.

In the liquid crystal composition of the present invention, the total content of the compound represented by the formula (ii-bn) is in consideration of the solubility at low temperature, the transfer temperature, electrical reliability, etc., with respect to the total mass of the liquid crystal composition of the present invention. The mass% or more is preferably 25% by mass or less, more preferably 3% by mass or more and 20% by mass or less, more preferably 6% by mass or more and 15% by mass or less, and particularly preferably 8% by mass or more and 12% by mass or less.

In a preferred embodiment of the liquid crystal composition of the present invention, one or two or more kinds of the R ii 2 ^-type alkyl group having 1 to 8 carbon atoms or the number of carbon atoms in the formula (ii) are contained. A liquid crystal composition of a compound of 8 alkoxy groups. As such a compound, for example, a compound represented by the following formula (ii-c) can be exemplified.

In a preferred embodiment of the liquid crystal composition of the present invention, one or two or more kinds of the formula (ii) having at least one 2,3-difluorobenzene-1,4-diyl group are exemplified. A liquid crystal composition of the compound shown. As such a compound, for example, a compound represented by the following formula (ii-c) can be exemplified.

In the case where the formula (ii) and m ⁱⁱ¹ are 2, m ⁱⁱ² is preferably 0, and the compound represented by the formula (ii) is more preferably a compound represented by the following formula (ii-c).

In the general formula (ii-c), X ⁱⁱ⁵ and X ⁱⁱ⁶ lines each independently represent a hydrogen atom or a fluorine atom identical, A ^ii2, A ⁱⁱ² R ⁱⁱ¹ and R ⁱⁱ² system and the formula (ii) is, R ⁱⁱ¹ and R ⁱⁱ² .

^{Any of} X ⁱⁱ⁵ and X ⁱⁱ⁶ is preferably a fluorine atom, and both of them are preferably a fluorine atom.

A ⁱⁱ² is preferably a 1,4-cyclohexylene group.

The compound represented by the formula (ii-c) is preferably a compound represented by the following formula (ii-c-n).

In the formula (ii-cn), R ⁱⁱ³ is preferably an alkyl group having 1 to 6 carbon atoms, a linear alkyl group having 1 to 4 carbon atoms, and an alkyl group having 1 to 2 carbon atoms. Better.

In the formula (ii-cn), R ⁱⁱ⁴ is an alkyl group having 1 to 8 carbon atoms or an alkenyl group having 2 to 8 carbon atoms, preferably a linear alkyl group having 1 to 5 carbon atoms or a carbon atom. 2 to 5 alkenyl groups are more preferred.

The compound represented by the formula (ii-c-n) is preferably a compound represented by the following formula (ii-c-1) to (ii-c-10). Among these, the liquid crystal composition of the present invention preferably contains one to three of the formula (ii-c-3), the formula (ii-b-5) and the formula (ii-c-6).

In the liquid crystal composition of the present invention, the total content of the compound represented by the formula (ii-cn) is in consideration of the solubility at low temperature, the transfer temperature, electrical reliability, etc., with respect to the total mass of the liquid crystal composition of the present invention. The mass% or more is 60% by mass or less, preferably 10% by mass or more and 50% by mass or less, more preferably 20% by mass or more and 40% by mass or less, and more preferably 30% by mass or more and 40% by mass or less.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (ii-c-3) is considered to be the low-temperature solubility, the transfer temperature, the electrical reliability, etc., with respect to the total mass of the liquid crystal composition of the present invention. 1% by mass or more and 30% by mass or less is more preferable, and 3% by mass or more and 25% by mass or less is more preferable, and 5% by mass or more and 20% by mass or less are more preferably 8 8% by mass or more and 16% by mass or less.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (ii-c-5) is considered to be the low-temperature solubility, the transfer temperature, the electrical reliability, etc., with respect to the total mass of the liquid crystal composition of the present invention. 1% by mass or more and 30% by mass or less is more preferable, and 3% by mass or more and 25% by mass or less is more preferable, and 5% by mass or more and 20% by mass or less are more preferably 8 8% by mass or more and 16% by mass or less.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (ii-c-7) is considered to be the low-temperature solubility, the transfer temperature, the electrical reliability, etc., with respect to the total mass of the liquid crystal composition of the present invention. 1% by mass or more and 30% by mass or less is more preferable, and 3% by mass or more and 25% by mass or less is more preferable, and 5% by mass or more and 20% by mass or less are more preferably 8 8% by mass or more and 16% by mass or less.

In the liquid crystal composition of the present invention, the total content of the three compounds represented by the formula (ii-c-3), the formula (ii-c-5), and the formula (ii-c-7) is considered to be low-temperature solubility, The transfer temperature, electrical reliability, and the like are preferably 1% by mass or more and 60% by mass or less based on the total mass of the liquid crystal composition of the present invention, and more preferably 10% by mass or more and 50% by mass or less, and more preferably 20% by mass or more. The mass % or less is more preferably, and 30% by mass or more and 40% by mass or less is particularly preferable.

Further, as the compound represented by the formula (ii) used in the liquid crystal composition of the present invention, a compound represented by the formula (X-4-2) can be used.

(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 limited, but one to two kinds of the plural compounds represented by the above formula (X-4-2) are combined in consideration of solubility at low temperature, transfer temperature, electrical reliability, birefringence, and the like. The above is preferable, and a combination of one to three or more types is more preferable.

The content of the compound represented by the formula (X-4-2) is 1% by mass or more and 30% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. The following is preferable, and it is more preferably 3 mass% or more and 20 mass% or less, and more preferably 5 mass% or more and 15 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 preferred. Among these, the liquid crystal composition of the present invention contains a compound represented by the formula (42.13) or the formula (42.14) more preferably.

Further, as the compound represented by the above formula (ii), a compound represented by the formula (X'-7) can be used.

(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 limited, but one type to two or more types of the plurality of compounds represented by the above formula (X'-7) are considered in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. Preferably.

The content of the compound represented by the formula (X'-7) 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 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. In still another embodiment, the content of the compound is 6 to 30% by mass, and in still other embodiments, the content of the compound is 8 to 30. In other embodiments, the content of the compound is 9 to 30% by mass, and in still other embodiments, the content of the compound is 11 to 30% by mass, and in still other embodiments, the content of the compound is It is 14 to 30% by mass. In still another embodiment, the content of the compound is 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. The content of the 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.

As the compound represented by the above formula (ii), a compound represented by the following formula (XIII"-40) to (XIII"-43) can be used.

In the general formula (XIII "-40) ~ (XIII " -43), R X1 and R ^X2 represent the same formula (X ") described later in the R ^X1 and R ^X2 significance.

In the above formula, R ^X1 represents an alkyl group having 1 to 8 carbon atoms and an alkenyl group having 2 to 8 carbon atoms, preferably an alkyl group having 1 to 8 carbon atoms, more preferably 2 carbon atoms. The alkyl group of ~5 is more preferred, and the linear chain is preferred.

In the above formula, R ^X2 represents an alkyl group having 1 to 8 carbon atoms, an alkenyl group having 2 to 8 carbon atoms, an alkoxy group having 1 to 8 carbon atoms or an alkenyloxy group having 2 to 8 carbon atoms. Preferably, it is preferably an alkyl group having 1 to 8 carbon atoms or an alkoxy group having 1 to 8 carbon atoms, and an alkyl group having 2 to 5 carbon atoms or an alkoxy group having 2 to 4 carbon atoms is preferably More preferably, a straight chain is preferred.

When the reaction rate of the liquid crystal display device of the present invention is improved, the R ^X2 -based alkenyl group is preferable, and the reliability of the voltage holding ratio or the like is considered. The R ^X2 -based alkyl group is preferred.

Among the compounds represented by the formula (XIII"-40) to (XIII"-43), the compounds represented by (XIII"-40) and (XIII"-42) are preferred. The compound represented by (XIII"-40) is more preferable.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (XIII"-40) is considered to be the low-temperature solubility, the transfer temperature, the electrical reliability, etc., with respect to the total mass of the liquid crystal composition of the present invention. 1% by mass or more and 30% by mass or less is more preferable, and 1% by mass or more and 20% by mass or less is more preferable, and 5% by mass or more and 15% by mass or less is more preferably 7% by mass or more and 13% by mass or less is particularly preferable.

The liquid crystal composition of the first embodiment of the present invention may contain any one or two or more kinds of the compounds 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 ( One of the b) and/or two or more hydrogen atoms may be independently substituted by a cyano group, a fluorine atom or a chlorine atom, and L ^L1 and L ^L2 each independently represent a single bond, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, -OCF ₂ -, -CF ₂ O-, -CH=NN=CH-, -CH=CH-, - CF=CF- or -C≡C-, 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 stored in plural In the case of the above, they may be the same or different. Except for the compounds represented by the above formula (ii) ).

The type of the compound which can be combined is not particularly limited, but a plurality of compounds represented by the above formula (L) may be suitably combined in accordance with the desired properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence. use. 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. Furthermore, 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. Furthermore, 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 formula (L) is dependent on the solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dripping trace, afterimage, and It is suitable to adjust the performance requested by electrical anisotropy or the like.

The content of the above compound is, for example, 1 to 95% by mass based on the total mass of the liquid crystal composition of the present invention. Or another embodiment of the present invention is that the content is from 10 to 95% by mass. Further, other embodiments of the present invention are the aforementioned contents. It 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% in one form of the present invention with respect to the total mass of the liquid crystal composition of the present invention. Further, in another embodiment of the present invention, the content is 1% to 85%. Further, in another embodiment of the present invention, the content is 1 to 75%. Further, in another embodiment of the present invention, the content is 1% to 65%. Further, in another embodiment of the present invention, the content is 1 to 55%. Further, in another embodiment of the present invention, the content is 1% to 45%. Further, in another embodiment of the present invention, the content is 1 to 35%. Further, in another embodiment of the present invention, the content is 1% to 25%.

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

R ^L1 and R ^{L2 are} in the case where the ring to which the bond is bonded is a phenyl group (aromatic), a linear alkyl group having 1 to 5 carbon atoms, and a linear carbon atom having 1 to 4 (or more) Alkoxy group and alkenyl group having 4 to 5 carbon atoms are preferred, and the ring structure of the bond 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.

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

The compound represented by the formula (L) is preferably a compound selected from the group consisting of compounds represented by the formula (I).

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 a carbon number; 2 to 5 alkenyl groups, A ¹¹ and A ¹² each independently represent 1,4-cyclohexylene, 1,4-phenylene, 2-fluoro-1,4-phenylene or 3-fluoro-1,4 - Stretch phenyl).

The type of the compound which can be combined is not particularly limited, but may be appropriately combined with the plural compound represented by the above formula (I) in view of the low-temperature solubility, transfer temperature, electrical reliability, and birefringence. . The type of compound used, for example, in the context of the present invention In the case of the form, it is one type. 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 (I) is dependent on the solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dripping trace, afterimage, and It is suitable to adjust the performance requested by electrical anisotropy or the like.

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 in one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Further, in another embodiment of the present invention, the content is from 3 to 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.

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

R ^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 a carbon atom. The number of alkenyl groups of 4 to 5 is preferred, and the ring structure of the bond is cyclohexane, megbrane and In the case of a saturated ring structure such as an alkane, 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).

(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 the complex compound represented by the above formula (I-1) can be suitably combined in view of the low-temperature solubility, transfer temperature, electrical reliability, and birefringence. To use. 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) is required to satisfy the solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dripping trace, and afterimage. It is suitable to adjust the properties required for dielectric anisotropy and 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 According to still another embodiment of the present invention, the content is 47% to 70% by mass. Further, in another embodiment of the present invention, the content is 50% to 70% by mass. Further, in another embodiment of the present invention, the content is 53 to 70% by mass. Further, in another embodiment of the present invention, the content is 56 to 70% by mass.

The content of the above 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.

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

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

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

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

The content of the 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. Furthermore, in another embodiment of the present invention, the content is 2 to 50% by mass. . Further, in another embodiment of the present invention, the content is 2 to 40% by mass. Further, in another embodiment of the present invention, the content is 2 to 35% by mass. Further, in another embodiment of the present invention, the content is 2 to 30% by mass. Further, in another embodiment of the present invention, the content is 2 to 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, 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 preferred, and in particular, the compound represented by the formula (1.3) is preferred.

When the compounds represented by the formula (1.2) or the formula (1.3) are used singly or in combination, the high content of the compound represented by the formula (1.2) is effective for improving the reaction rate, and the compound represented by the formula (1.3) The content in the range shown below can be preferably a liquid crystal composition having a fast reaction rate and high electrical and optical reliability.

The compound represented by the formula (1.3) is preferably contained in an amount of 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, more preferably 2% by mass or more and 25% by mass or less, and more preferably 3 parts by mass. More than 20% by mass or less is more preferable.

In a more preferable range, it may be 4 to 15% by mass, may be 4 to 10% by mass, may be 4 to 7 mass%, may be 3 to 4 mass%, may be 7 to 15 mass%, may be 10 to 15 The mass % can also be 15 to 20% by mass.

Further, the compound represented by the formula (I-1) is preferably a compound selected from the group consisting of compounds represented by the formula (I-1-2).

(wherein R ¹² each independently 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 may be suitably combined with the above-mentioned general formula (I-1-2) in view of the low-temperature solubility, transfer temperature, electrical reliability, and birefringence. Multiple compounds are used. The type of the compound to be used is, for example, one type in one embodiment of the present invention. Or other embodiments of the present invention are two types. Further, other embodiments of the present invention are three types.

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

The content of the above compound is, for example, 7 to 60% 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 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. Furthermore, other embodiments of the invention are The aforementioned content is 24 to 60% by mass. Further, in another embodiment of the present invention, 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 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, 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 formulae (2.1) to (2.4), and represented by the formulae (2.2) to (2.4). The compound is preferred. In particular, the compound represented by the formula (2.2) is particularly preferable because it improves the reaction rate of the liquid crystal composition of the present invention. Further, in the case of seeking Tni having a higher reaction rate, it is preferred to use a compound represented by the formula (2.3) or the formula (2.4). Formula (2.3) and (2.4) The content of the compound shown is preferably 30% or more in order to improve the solubility at a low temperature.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (2.2) 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, 50% by mass or less, 20% by mass or more and 40% by mass or less, 20% by mass or more and 35% by mass or less, 20% by mass or more and 30% by mass or less, and 20% by mass. 25 mass% or less, 10 mass% or more, 20 mass% or less, 25 mass% or more, 50 mass% or less, 30 mass% or more, 50 mass% or less, 35 mass% or more, 50 mass% or less, 40 mass% or more, 50 mass% or less. .

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (2.3) is preferably 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, and 5% by mass and 45% by mass. The following is more preferable, and 5 mass% or more and 35 mass% or less are more preferable, and 5 mass% or more and 25 mass% or less are more preferable, and 10 mass% or more and 25 mass% or less are more preferable.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (2.4) is based on the total mass of the liquid crystal composition of the present invention. The mass% or more is 55 mass% or less, preferably 1 mass% and 40 mass% or less, more preferably 10 mass% or more and 40 mass% or less, more preferably 20 mass% or more and 40 mass% or less, and more preferably 25% by mass. The above 35 mass% or less is particularly preferable.

Further, the compound represented by the formula (I) is preferably a compound selected from the group of compounds represented by the formula (I-2).

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

The type of the compound to be combined is not particularly limited, but a plurality of compounds represented by the above formula (I-2) may be combined in view of the low-temperature solubility, transfer temperature, electrical reliability, birefringence, and the like. . 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) is required to correspond to low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, dripping trace, and afterimage. It is suitable to adjust the properties required for dielectric anisotropy and the like.

The content of the above compound is, for example, 3 to 60% 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 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, other embodiments of the present invention are 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, 3 to 60% by mass in one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. 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 seeking Tni having a higher reaction rate, it is preferred to use a compound represented by the formula (3.3) or the formula (3.4). Formula (3.3) and The content of the compound represented by the formula (3.4) is preferably 20% or more in order to improve the solubility at a low temperature.

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 (3.1) is 1% by mass or more based on the total mass of the liquid crystal composition of the present invention in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. The mass% or less is preferably 5% by mass or more and 25% by mass or less, more preferably 10% by mass or more and 20% by mass or less, and particularly preferably 12% by mass or more and 18% by mass or less.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (3.3) is 1% by mass or more based on the total mass of the liquid crystal composition of the present invention in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. The mass% or less is more preferably 1% by mass or more and 15% by mass or less, more preferably 1% by mass or more and 10% by mass or less, and more preferably 2% by mass or more and 8% by mass or less.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (3.4) 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. 30% by mass or less is preferable, and 1% by mass or more and 20% by mass or less is more preferable, and 3% by mass or more and 12% by mass or less are more preferably, and 5% by mass or more and 10% by mass or less are particularly preferable.

Further, the compound represented by the formula (I) is preferably a compound selected from the group of compounds 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 type of the compound which can be combined is not particularly limited, but a plurality of compounds represented by the above formula (I-3) may be combined in view of the low-temperature solubility, transfer temperature, electrical reliability, birefringence, and the like. . 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) is required to correspond to low-temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, dripping trace, and afterimage. It is suitable to adjust the properties required for dielectric anisotropy and 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, other embodiments of the present invention are the aforementioned The amount 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-mentioned compound, for example, in one aspect of the present invention, 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 set to be high when the content is set to be small. Further, in the case of improving the characteristics of dripping marks or afterimages, it is preferred to set the range of the content to be intermediate.

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

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 the total amount of the liquid crystal composition of the present invention.

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 type of the compound which can be combined is not particularly limited, but a plurality of compounds represented by the above formula (I-4) can be combined in view of the low-temperature solubility, transfer temperature, electrical reliability, and birefringence. . The type of the compound to be used is, for example, one type in one embodiment of the present invention. Or other embodiments of the present invention are two types.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (I-4) is required to satisfy the solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dripping trace, and afterimage. It is suitable to adjust the properties required for dielectric anisotropy and 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 the aforementioned content of 5 ~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.

In addition, 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 dripping marks or afterimages, it is preferred to set the range of the content to be intermediate.

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

The content of the compound represented by the formula (5.3) is preferably 1% by mass or more and 30% by mass or less based on the total mass of the liquid crystal composition of the present invention, and more preferably 2% by mass or more and 20% by mass or less, and 2% by mass. More than 10% by mass or less is more preferable.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (5.4) is 1% by mass or more based on the total mass of the liquid crystal composition of the present invention in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. The mass% or less is more preferably 1% by mass or more and 20% by mass or less, more preferably 1% by mass or more and 10% by mass or less, and particularly preferably 1% by mass or more and 5% by mass or less.

Further, the compound represented by the formula (I) is preferably a compound selected from the group of compounds represented by the formula (I-5).

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

The type of the compound which can be combined is not particularly limited, but a plurality of compounds represented by the above formula (I-5) can be combined in view of the low-temperature solubility, transfer temperature, electrical reliability, birefringence, and the like. . 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) is required to satisfy the solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dripping trace, and afterimage. It is suitable to adjust the properties required for dielectric anisotropy and the like.

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

Further, the content of the above compound is, for example, one aspect of the present invention, relative to the total mass of the liquid crystal composition of the present invention. 50%. Further, in another embodiment of the present invention, the content is 1% to 40%. Further, in another embodiment of the present invention, the content is 1 to 35%. Further, in another embodiment of the present invention, the content is 1% to 30%. Further, in another embodiment of the present invention, the content is 1% to 20%. Further, in another embodiment of the present invention, the content is 1% to 15%. Further, in another embodiment of the present invention, the content is 1% to 10%. Further, in another embodiment of the present invention, the content is 1% to 5%.

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

Further, the compound represented by the 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 preferred.

In addition, the content of the compound represented by the formula (6.3) is preferably 2% by mass or more and 30% by mass or less based on the total mass of the liquid crystal composition of the present invention, and more preferably 4% by mass or more and 25% by mass or less. More preferably, it is 6 mass% or more and 20 mass% or less.

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

The content of the compound represented by the adjustment formula (6.7) is preferably in accordance with the properties of solubility at low temperature, transfer temperature, electrical reliability, birefringence, etc., and is contained in the total mass of the liquid crystal composition of the present invention. The compound 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, and X ¹¹ and X ¹² are each independently It 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 mass% or more and 30 mass% or less is more preferable, and 6 mass% or more and 30 mass% or less are more. Preferably, 9% 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 14% by mass or more and 30% by mass or less, and more preferably 16% by mass or more and 30% by mass or less. 18% by mass or more and 25% by mass or less is more preferable, and 20% by mass or more and 24% by mass or less are more preferable, and 22% by mass or more and 23% by mass or less are 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 X ¹² each independently represents a fluorine atom. 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 the total mass of the liquid crystal composition of the present invention, and more preferably 2% by mass or more and 30% by mass or less. 3 mass% or more and 30 mass% or less are more preferable, and 4 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 8 mass% or more and 30 mass% or less are more preferable. More preferably, the mass% is 30% by mass or less, more preferably 12% by mass or more and 30% by mass or less, and more preferably 15% by mass or more and 25% by mass. The following is more preferable, and 18% by mass or more and 24% by mass or less are more preferable, and 21% by mass or more and 22% by mass or less are particularly preferable.

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 combined with the complex compound represented by the above formula (I-8) in view of the low-temperature solubility, transfer temperature, electrical reliability, birefringence, and the like. 1 to 3 types are preferred. The content of the compound represented by the formula (I-8) depends on the solubility at low temperature, the transfer temperature, the electrical reliability, the birefringence, the process suitability, the dropping trace, the afterimage, the dielectric anisotropy, and the like. The performance is preferably 5% by mass or more and 65% by mass or less based on the total mass of the liquid crystal composition of the present invention, more preferably 10% by mass or more and 65% by mass or less, and even more preferably 15% by mass or more and 65% by mass or less. 20% by mass or more and 65% by mass or less is more preferably 25% by mass or more and 65% by mass or less, more preferably 30% by mass or more and 65% by mass or less, and more preferably 35% by mass or more and 65% by mass or less. More preferably, the mass% or more is 65 mass% or less, more preferably 45 mass% or more and 60 mass% or less, and more preferably 50 mass% or more and 58 mass%. The following is more preferable, and 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 preferred.

Further, a compound represented by the formula (L), for example, a compound selected from the compounds represented by the formula (II) is preferred.

(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-cyclohexylene group. Or 1,4-phenylene, Q ² represents a single bond, -COO-, -CH ₂ -CH ₂ - or -CF ₂ O-).

The types of compounds that can be combined are not particularly limited, but The plurality of compounds represented by the above formula (II) may be combined in accordance with the properties of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one type in one embodiment of the present invention. Or other embodiments of the present invention are two types. Further, 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, the electrical reliability, the birefringence, the process suitability, the dripping trace, the afterimage, and the It is suitable to adjust the performance requested by 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 total mass of the liquid crystal composition relative to the present invention The content of the above compound is, for example, 3 to 50% by mass in one embodiment 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.

Further, the compound represented by the formula (II), for example, a compound selected from the group of compounds represented by the formula (II-1) is preferred.

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

The content of the compound represented by the formula (II-1) is preferably adjusted in accordance with the low-temperature solubility, transfer temperature, electrical reliability, and birefringence, and is preferably 4% by mass or more and 24% by mass or less. Preferably, it is 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 selected from the group of compounds 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 type of the compound which can be combined is not particularly limited, but a plurality of compounds represented by the above formula (II-2) can be combined in view of the low-temperature solubility, transfer temperature, electrical reliability, birefringence, and the like. . 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) is required to satisfy the low temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, dripping trace, and afterimage. It is suitable to adjust the properties required for dielectric anisotropy and 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. In addition, other aspects of the invention The above-mentioned 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 in one embodiment of the present invention, based on the total mass of the liquid crystal composition of the present invention. Further, in another embodiment of the present invention, the content is from 3 to 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.

Further, a 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 of solubility at low temperature, transfer temperature, electrical reliability, and birefringence, and may also contain a compound represented by the formula (11.2), or may be a formula (11.1). Both the compound represented by the formula and the compound represented by the formula (11.2) may also contain a formula (11.1) All of the compounds represented by the formula (11.3). The content of the compound represented by the formula (11.1) or 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 is preferably 5% by mass or more and 5% by mass or less. More preferably, it is more preferably 5 mass% or more and 30 mass% or less, and most preferably 5 mass% or more and 25 mass% or less, and most preferably 5 mass% or more and 20 mass% or less.

In addition, the content of the compound represented by the formula (11.1) is preferably 1% 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 2% by mass or more and 25% by mass or less. 3% by mass or more and 20% by mass or less are more preferably, and 5 mass% or more and 15% by mass or less are particularly preferable.

In the particularly preferred range, the content may be 5 to 10% by mass, may be 5 to 8% by mass, may be 8 to 15% by mass, may be 10 to 15% by mass, and may be 12 to 15% by mass.

In addition, the content of the compound represented by the formula (11.2) is preferably 1% 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 2% by mass or more and 30% by mass or less. More preferably, it is more preferably 3 mass% or more and 20 mass% or less, and more preferably 4 mass% or more and 15 mass% or less.

In a more preferable range, for example, 4% by mass or more and 12% by mass or less, 4% by mass or more and 8% by mass or less, 4% by mass or more and 6% by mass or less, 65% by mass or more and 15% by mass or less, and 85% by mass or more can be exemplified. The content is 5% by mass or less, 10% by mass or more and 15% by mass or less, and 12% by mass or more and 15% by mass or less.

Containing the compound represented by formula (11.1) and formula (11.2) In the case of both of the compounds, the total mass of the compounds of the present invention is preferably 10% by mass or more and 45% by mass or less based on the total mass of the liquid crystal composition of the present invention, and more preferably 10% by mass or more and 35% by mass or less. Preferably, 14% by mass or more and 23% by mass or less are more preferably.

Further, the compound represented by the formula (II), for example, a compound selected from the group of compounds represented by the formula (II-3) is preferred.

(R ²⁵ represents an alkyl group having 1 to 5 carbon atoms, and R ²⁴ represents an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms).

The type of the compound to be combined is not particularly limited, but it is contained in the plural compound represented by the above formula (II-3) in view of the low-temperature solubility, transfer temperature, electrical reliability, and birefringence. One to three types are preferred.

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. The performance of the beggar is suitable for adjustment. For the preferred content, for example, the content of the above compound is from 2 to 45% by mass based on the total mass of the liquid crystal composition of the present invention. For better content, 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%, and 23 to 45 can be exemplified. Mass %, 26 to 45 mass%, 29 to 45 mass%, or 2 to 45 mass%, 2 to 40 mass%, 2 to 35 mass%, 2 to 30 mass%, 2 to 25 mass%, 2 to 20 mass %, 2 to 15% by mass, and 2 to 10% by mass.

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

The compound represented by the formula (12.1) may be contained in accordance with the properties of solubility at low temperature, transfer temperature, electrical reliability, birefringence, etc., and may also contain a compound represented by the formula (12.2), or may contain a formula ( 12.1) Both the compound represented by the formula and the compound represented by the formula (12.2). The content of the compound represented by the formula (12.1) or 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. Further, the content of the compound represented by the formula (12.2) is preferably 3% by mass or more and 40% by mass or less based on the total mass of the liquid crystal composition of the present invention. When both the compound represented by the formula (12.1) and the compound represented by the formula (12.2) are contained, the total mass of the compound of the two is 15% by mass or more and 45% by mass based on the total mass of the liquid crystal composition of the present invention. The following are preferred.

Further, the content of the compound represented by the formula (12.3) is preferably 0.05% by mass or more and 2% by mass or less based on the total mass of the liquid crystal composition of the present invention. The compound represented by the formula (12.3) may be an optically active compound.

Further, the compound represented by the formula (II-3), for example, a compound selected from the group of compounds represented by the formula (II-3-1) is preferred.

(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 the complex compound represented by the above formula (II-3-1) is contained in view of the low-temperature solubility, transfer temperature, electrical reliability, and birefringence. One of the ~3 types is preferred.

The content of the compound represented by the formula (II-3-1) is preferably adjusted in accordance with the low-temperature solubility, transfer temperature, electrical reliability, and birefringence, and is preferably 1% by mass or more and 24% by mass. The following is preferable, and it is more preferably 4% by mass or more and 18% by mass or less, and more preferably 8% by mass or more and 14% by mass or less.

Further, the compound represented by the formula (II-3-1), for example, a compound represented by the formula (13.1) to the formula (13.4) is preferred, and in particular, the compound represented by the formula (13.3) is preferred.

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 of the present invention. 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), for example, a compound represented by the formula (15.1) or the formula (15.2) is preferred, and in particular, the compound represented by the formula (15.1) is preferred.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (15.1) is 1% by mass or more based on the total mass of the liquid crystal composition of the present invention in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. 30% by mass or less is preferable, and 1% by mass or more and 20% by mass or less is more preferable, and 1% by mass or more and 10% by mass or less is more preferably 2% by mass or more and 8% by mass or less.

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 dissolved at a low temperature The content, the transfer temperature, the electrical reliability, the birefringence, and the like are preferably adjusted, and the content is preferably 4% by mass or more and 23% by mass or less, more preferably 6% by mass or more and 18% by mass or less. More preferably, the mass% is more than 13% by mass.

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 low-temperature solubility, transfer temperature, electrical reliability, and birefringence, and is preferably 4% by mass or more and 23% by mass or less. Preferably, 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 preferably a compound selected from the group consisting of compounds represented by the formulae (17.1) to (17.3), and particularly preferably a compound represented by the formula (17.3). .

Further, the compound represented by the formula (L) is preferably selected from the group 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 type of the compound which can be combined is not particularly limited, but a plurality of compounds represented by the above formula (IV) may be combined in view of the low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one type in one embodiment of the present invention. Or other embodiments of the present invention are two types. Further, other embodiments of the present invention are three types. 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), for example, a compound selected from the group of compounds represented by the formula (IV-1) is preferred.

(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) is necessary It is suitably adjusted in response to the properties required for low temperature solubility, transfer temperature, electrical reliability, birefringence, process suitability, dripping marks, afterimage, dielectric anisotropy, and the like.

The content of the above compound is, for example, 1 to 40% by mass based on the total mass of the liquid crystal composition of the present invention. Further, in another embodiment of the present invention, the content is 2 to 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 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 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, 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. Further, in another embodiment of the present invention, the content is 1% by mass to 4% by mass.

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

The type of the compound which can be combined is not particularly limited, but one to three kinds of these compounds are preferable, and one to four types are more preferable. Further, the molecular weight distribution of the selected compound is also broadly effective for solubility, and for example, one of the compounds represented by the formula (18.1) or (18.2) is selected, and the compound represented by the formula (18.4) or (18.5) is selected. One type, a compound represented by the formula (18.6) or the formula (18.7) is selected as one type, and a compound represented by the formula (18.8) or (18.9) is selected as one type of compound. A suitable combination is preferred. 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), for example, a compound selected from the group of compounds represented by the formula (IV-2) is preferred.

(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 type of the compound which can be combined is not particularly limited, but a plurality of compounds represented by the above formula (IV-2) can be combined in view of the 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, etc. The performance of the beggar is suitable for adjustment. For example, the content of the above compound is preferably from 0.5 to 40% by mass based on the total mass of the liquid crystal composition of the present invention. 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, a compound represented by the formula (IV-2), for example, a compound represented by the formula (19.1) to the formula (19.8) is preferred, and a compound represented by the formula (19.2) is preferred.

The broad molecular weight distribution of the compound selected as the 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 from the formula (19.3) or 19.4) Selecting one type of the compound, selecting one type of the compound represented by the formula (19.5) or the formula (19.6), and selecting one type of compound from the compound represented by the formula (19.7) or (19.8), and the like. A suitable combination is preferred.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (19.2), considering the solubility at low temperature, the transfer temperature, and the electrical reliability The total mass of the liquid crystal composition of the present invention is preferably 0.5% by mass or more and 15% by mass or less.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (19.4) 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% by mass or more and 20 mass% or less are more preferable, and 5% by mass or more and 15% by mass or less are more preferably, and 7 mass% or more and 13 mass% or less are particularly 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 are each independently 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 which can be combined is not particularly limited, but a plurality of compounds represented by the above formula (V) may be combined in view of the low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one type in one embodiment of the present invention. Or other embodiments of the present invention are two types. Further, other embodiments of the present invention are three types. Further, other embodiments of the present invention are of four types.

Relative to the total mass of the liquid crystal composition of the present invention, the foregoing The content of the compound is, for example, one embodiment of from 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 7 to 40% by mass. Further, in another embodiment of the present invention, the content is 10 to 40% by mass. Further, in another embodiment of the present invention, the content is from 12 to 40% by mass. Further, in another embodiment of the present invention, the content is 15 to 40% by mass. Further, in another embodiment of the present invention, the content is 17 mass% to 40% by mass. Further, in another embodiment of the present invention, the content is from 18 to 40% by mass. Further, in another embodiment of the present invention, the content is 20 to 40% by mass. Further, in another embodiment of the present invention, the content is 22 to 40% by mass.

Further, for example, in one embodiment of the present invention, the content of the compound is 2 to 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.

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 are each independently Indicates 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 compound represented by the formula (V-1-1) is preferably contained in an amount of 1% by mass or more and 15% by mass or less based on the total mass of the liquid crystal composition of the present invention, and is contained in an amount of 2% by mass or more and 15% by mass or less. More preferably, 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-1-1) 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 preferred.

The content of the compound represented by formula (20.2), considering the low temperature The solubility, the transfer temperature, the electrical reliability, the birefringence, and the like are preferably 1% by mass or more and 30% by mass or less based on the total mass of the liquid crystal composition of the present invention, and more preferably 1% by mass or more and 15% by mass or less. Preferably, it is more preferably 1% by mass or more and 10% by mass or less, and particularly preferably 2% 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 (20.5) to the formula (20.8). In the above, the liquid crystal composition of the present invention preferably contains a compound represented by the formula (20.7) and/or a compound represented by the formula (20.8).

The content of the compound represented by the formula (20.7) is 1% by mass or more and 30% by mass or less based on the total mass of the liquid crystal composition of the present invention in consideration of low-temperature solubility, transfer temperature, electrical reliability, and birefringence. It is more preferably 1% by mass or more and 15% by mass or less, more preferably 1% by mass or more and 10% by mass or less, and particularly preferably 2% by mass or more and 8% by mass or less.

The content of the compound represented by the formula (20.8) is preferably 1% by mass or more and 30% by mass or less based on the total mass of the liquid crystal composition of the present invention in consideration of low-temperature solubility, transfer temperature, electrical reliability, and birefringence. Preferably, it is more preferably 1% by mass or more and 15% by mass or less, and 1% by mass is It is more preferable that it is 10 mass% or less, and it is especially preferable that it is 2 mass% or more and 8 mass% or less.

The total content of the two kinds of compounds represented by the formula (20.7) and the formula (20.8) is considered to be the low-temperature solubility, the transfer temperature, the electrical reliability, the birefringence, etc., with respect to the total mass of the liquid crystal composition of the present invention. It is preferably 1% by mass or more and 30% by mass or less, more preferably 3% by mass or more and 20% by mass or less, more preferably 5% by mass or more and 15% by mass or less, and particularly preferably 7% by mass or more and 13% by mass or less.

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

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

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

(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 are each independently Indicates a fluorine atom or a hydrogen atom).

The type of the compound which can be combined is not particularly limited, but a plurality of compounds represented by the above formula (V-2) may be combined in view of the low-temperature solubility, transfer temperature, electrical reliability, birefringence, and the like. . 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. Further, in another embodiment of the present invention, the content of the compound is from 18 to 40% by mass. Further, in another embodiment of the present invention, the content of the compound is from 20 to 40% by mass. Further, in another embodiment of the present invention, the content of the compound is from 22 to 40% by mass.

Further, for example, in one embodiment of the present invention, the content of the compound is 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 a high Tni, it is preferable to make the content of the compound represented by the formula (V-2) into a plurality of cases, and to look at the low viscosity embodiment, the content is made smaller. It 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 a compound represented by the formula (23.1) or the formula (23.2) is preferred.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (23.1) 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.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (23.2) 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.

In the liquid crystal composition of the present invention, the total content of the compound represented by the formula (23.1) and the compound represented by the formula (23.2) is considered to be the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. The total mass of the substance is preferably 1% by mass or more and 25% by mass or less.

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 a compound represented by the formula (24.1) or the formula (24.2) is preferred.

The liquid crystal composition of the present invention contains any one or more of the compounds represented by the following formula (M).

(wherein R ^M1 represents an alkyl group having 1 to 8 carbon atoms, and one of the alkyl groups or two or more non-adjacent -CH ₂ - groups may be independently -CH=CH-, -C≡C -, -O-, -CO-, -COO- or -OCO-substitution, PM represents 0, 1, 2, 3 or 4, and C ^M1 and C ^M2 each independently represent a group selected from the group consisting of: ( d) 1,4-cyclohexylene (one of -CH ₂ - or two or more of -CH ₂ - not adjacent to this group may be substituted with -O- or -S-), and (e 1,4-phenylene (one of -CH= or two or more non-contiguous -CH= may be substituted by -N=), the above-mentioned base (d), base (e Each of them may be independently substituted by a cyano group, a fluorine atom or a chlorine atom, and K ^M1 and K ^M2 each independently represent a single bond, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O -, -OCF ₂ -, -CF ₂ O-, -COO-, -OCO- or -C≡C-, PM is 2, 3 or 4 and K ^M1 is a plurality of cases, they may be the same Alternatively, PM is 2, 3 or 4 and C ^M2 is a plurality of cases, and they may be the same or different, and X ^M1 and X ^M3 each independently represent a hydrogen atom, a chlorine atom or a fluorine atom. X ^M2 represents a hydrogen atom, a fluorine atom, a chlorine atom, a cyano group, a trifluoromethyl Group, fluoromethoxy, difluoromethoxy, trifluoromethoxy or 2,2,2-trifluoroethyl. However, except for the compound of formula (ii) represented).

The type of the compound which can be combined is not particularly limited, but a plurality of compounds represented by the above formula (M) may be used in combination depending on the desired properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one type in one embodiment of the present invention. Or other embodiments of the present invention are two types. Further, other embodiments of the present invention are three types. Further, 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) is dependent on the solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dripping trace, afterimage, and It is suitable to adjust the performance requested by electrical anisotropy or the like.

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

Further, the content of the above compound is, for example, 1 to 95% by mass based on the total mass of the liquid crystal composition of the present invention. 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. On this issue In still another embodiment, the content of the compound is from 1 to 65% by mass. In still another embodiment of the present invention, the content of the compound is from 1 to 55% by mass. In still another embodiment of the present invention, the content of the compound is from 1 to 45% by mass. In still another embodiment of the present invention, the content of the compound is from 1 to 35% by mass. In still another embodiment of the present invention, the content of the compound is from 1 to 25% by mass.

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

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

When the compound represented by the formula (M) is required to satisfy the chemical stability of the liquid crystal composition, it is preferred that the compound does not have a chlorine atom in the molecule. Further, the compound having a chlorine atom in the liquid crystal composition is 5% or less. Preferably, 3% or less is preferred, 1% or less is preferred, and 0.5% or less is preferred, and substantially no content is preferred. The term "substantially not contained" means that only a compound containing an unintended chlorine atom such as a compound formed as an impurity in the production of a compound is mixed in the liquid crystal composition.

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

(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 fluorine. An atom, Y ⁸ represents a fluorine atom or -OCF ₃ ).

The kind of the compound which can be combined is not particularly limited, but the complex compound represented by the above formula (VIII) can be used in combination with the desired properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one type in one embodiment of the present invention. Or other embodiments of the present invention are two types. Further, other embodiments of the present invention are three or more types.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (VIII) is dependent 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 suitable to adjust the performance requested by electrical anisotropy or the like.

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. Moreover, for example, in other embodiments of the invention The content of the aforementioned compound is 4 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is 5 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 6 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is 7 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 8 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 9 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 10 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 11 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 12 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is 14 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is 15 to 40% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 21 to 40% by mass. For example, 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 2 to 30% by mass. In still another embodiment of the present invention, the content of the compound is 2 to 25% by mass. In still another embodiment of the present invention, the content of the compound is 2 to 21% by mass. In still other embodiments of the present invention, the aforementioned compound The content is 2 to 16% by mass. In still another embodiment of the present invention, the content of the compound is from 2 to 12% by mass. In still another embodiment of the present invention, the content of the compound is from 2 to 8% by mass. In still another embodiment of the present invention, the content of the compound is 2 to 5% by mass.

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

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

(In the 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 the complex compound represented by the above formula (VIII-1) can be combined in view of the desired properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence. use. 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 Above class.

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 preferably 1% by mass or more and 20% by mass or less, more preferably 1% by mass or more and 10% by mass or less, and more preferably 1% by mass or more and 5% by mass or less.

The content of the compound represented by the formula (26.2) is preferably 1% by mass or more and 30% by mass or less based on the total mass of the liquid crystal composition of the present invention in consideration of low-temperature solubility, transfer temperature, electrical reliability, and birefringence. Preferably, it is more preferably 2% by mass or more and 25% by mass or less, and more preferably 3% by mass. The upper 20% by mass or less is more preferably, and the 4% by mass or more and 15% by mass or less is particularly preferable.

In a particularly preferred range, the content may be 4% by mass or more and 10% by mass or less, or may be 4% by mass or more and 7% by mass or less, or may be 4% by mass or more and 6% by mass or less, or may be 4% by mass or more. The mass% or less may be 5% by mass or more and 15% by mass or less, may be 6% by mass or more and 15% by mass or less, may be 7% by mass or more and 15% by mass or less, and may be 10% by mass or more and 15% by mass or less. the following.

The total content of the compound represented by the formula (26.1) and the compound represented by the formula (26.2) is preferably from 1 to 40% by mass, and more preferably from 3 to 30% by mass based on the total mass of the liquid crystal composition of the present invention. Good, 5~20% by mass is better, and 8~16% by mass is especially 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 kind of the compound which can be combined is not particularly limited, but the complex compound represented by the above formula (VIII-2) can be combined in view of the desired properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence. use. 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 8% by mass or more and 25% by mass, in view of low-temperature solubility, transfer temperature, electrical reliability, and birefringence. % or less is preferable, 10% by mass and 20% by mass or less is more preferable, and 12% by mass or more and 15% by mass or less is more preferable.

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 a compound represented by the formula (27.2) is preferred.

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 the complex compound represented by the above formula (VIII-3) can be combined in view of the desired properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence. use. 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, the compound represented by the formula (M), for example, a compound selected from the group of compounds represented by the formula (IX) is preferred. However, the compound represented by the above formula (i) is excluded.

(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. The atom, Y ⁹ represents a fluorine atom, a chlorine atom or -OCF ₃ , and U ⁹ represents a single bond, -COO- or -CF ₂ O-).

The type of the compound which can be combined is not particularly limited, but the complex compound represented by the above formula (IX) can be used in combination with 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, another embodiment of the present invention is 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) is dependent on the solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dripping trace, afterimage, and It is suitable to adjust the performance requested by electrical anisotropy or the like.

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 5 to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 8 to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 10 to 70% by mass. For example, still another embodiment of the present invention The content of the above compound is 12 to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is 15 to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is from 17 to 70% by mass. For example, in still another embodiment of the present invention, the content of the compound is 20 to 70% by mass. For example, in still 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 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 another embodiment of the present invention, the content of the compound is from 3 to 45% by mass. In still another embodiment of the present invention, the content of the compound is from 3 to 40% by mass. Still other aspects of the invention In an embodiment, the content of the compound is from 3 to 35% by mass. In still another embodiment of the present invention, the content of the compound is from 3 to 30% by mass. In still another embodiment of the present invention, it is 25% by mass. In still another embodiment of the present invention, the content of the compound is from 3 to 20% by mass. In still another embodiment of the present invention, the content of the compound is from 3 to 15% by mass. In still another embodiment of the present invention, the content of the compound is from 3 to 10% by mass.

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

Further, the compound represented by the 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 type of the combinable compound is not particularly limited, but it depends on the solubility at low temperature, transfer temperature, electrical reliability, birefringence, and the like. For the desired properties, the plural compounds represented by the above formula (IX-1) can be used in combination. The type of the compound to be used is, for example, one type in one embodiment of the present invention. Or other embodiments of the present invention are two types. Further, other embodiments of the present invention are three types. Further, other embodiments of the present invention are 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 the complex number represented by the above formula (IX-1-1) can be combined in view of the desired properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence. Compounds are used. 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 of two types.

The content of the compound represented by the above formula (IX-1-1) is considered to be low temperature solubility, transfer temperature, electrical reliability, birefringence, etc., depending on the total mass of the liquid crystal composition of the present invention. The upper limit and the lower limit are preferred.

The content of the above compound is from 1 to 40% by mass in one embodiment, from 1 to 35% by mass in other embodiments, and from 1 to 30% by mass in other embodiments, and is further carried out in accordance with the total mass. The form is 1 to 25% by mass, and in still other embodiments, it is 1 to 10% by mass. Still other embodiments are 1 to 7 mass%, and still other embodiments are 1 to 5 mass%.

Further, the compound represented by the above formula (IX-1-1) is preferably a compound represented by the formula (28.1) to the formula (28.5). It is preferred that the liquid crystal composition contains one or two of the compounds represented by the formula (28.3) and the formula (28.5).

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (28.3) is 1% by mass or more and 30% by mass based on the total mass of the liquid crystal composition, in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. % or less is more preferably 1% by mass or more and 20% by mass or less is more preferably 1% by mass or more and 15% by mass or less is more preferably 2% by mass or more and 10% by mass or less is particularly preferable.

In a particularly preferred range, the content may be 2% by mass or more and 8% by mass or less. It may be 2% by mass or more and 7% by mass or less, may be 2% by mass or more and 5% by mass or less, may be 5% by mass or more and 10% by mass or less, or may be 7% by mass or more and 10% by mass or less. It may be 8 mass% or more and 10 mass% or less, and may be 9 mass% or more and 10 mass% or less.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (28.5) is 1% by mass or more and 30% by mass based on the total mass of the liquid crystal composition in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. % or less is more preferably 2% by mass or more and 20% by mass or less, more preferably 3% by mass or more and 15% by mass or less, and even more preferably 5% by mass or more and 10% by mass or less.

In a particularly preferred range, the content may be 5% by mass or more and 7% by mass or less, and may be 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 (28.3) and the compound represented by the formula (28.5) is 5% by mass or more and 35% by mass or less based on the total mass of the liquid crystal composition. Preferably, it is more preferably 10% by mass or more and 25% by mass or less, and more preferably 15% by mass or more and 18% by mass or less.

In a more preferable range, the content may be 15% by mass or more and 16% by mass or less, and may be 17% by mass or more and 18% by mass or less.

In the case where the liquid crystal composition contains the compound represented by the above formula (28.3) and the compound represented by the above formula (28.5), the relative content thereof may be a compound having a compound represented by the above formula (28.3). The content of the compound represented by the above formula (28.5) is a large amount. However, from the viewpoint of increasing the Tni of the liquid crystal composition, the content of the compound represented by the above formula (28.5) is preferably a plurality.

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 that can be combined is not limited, but one of the plurality of compounds represented by the above formula (IX-1-2) is combined in consideration of solubility at low temperature, transfer temperature, electrical reliability, birefringence, and the like. The 3 types are preferred, and the combination of 1 to 4 types is more preferable.

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

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 a compound represented by the formula (29.2) or the formula (29.4) is preferred.

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. An 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 in consideration of solubility at low temperature, transfer temperature, electrical reliability, birefringence, and the like, the plural compounds represented by the above formula (IX-2) can be appropriately combined in each embodiment. use. For example, one embodiment of the present invention is one type, and two types in other embodiments, and three types in other embodiments, and four types in still other embodiments, and five other types in other embodiments. Still other embodiments are combinations of six or more types.

(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 are no restrictions on the types of compounds that can be combined, but considering the solubility at low temperature, transfer temperature, electrical reliability, birefringence, etc., combination 1 The plural compounds represented by the above-mentioned general formula (IX-2-2) of three kinds are preferable, 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 low-temperature solubility, transfer temperature, electrical reliability, and birefringence. For example, in one embodiment of the present invention, the content of the compound is 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 2 to 40% by mass. In still another embodiment, 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, and in still other embodiments, the content of the compound is 14 to 40% by mass. In still another embodiment, the content of the compound is 16 to 40% by mass, 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 1 to 40% by mass based on the total mass, and in other embodiments, the content of the compound is 1 to 35% by mass. The content of the compound is 1 to 30% by mass, and in still 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. In still 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. In still another embodiment, the content of the compound is 1 to 4% by mass.

Further, the compound represented by the formula (IX-2-2) is preferably a compound represented by the formula (31.1) to the formula (31.4), and the formula (31.2) to the formula The compound represented by (31.4) is more preferably, and the compound represented by the formula (31.2) is more preferable.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (31.2) 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 or more and 20% by mass. % or less is more preferable, and 3 mass% or more and 10 mass% or less are more preferably, and 5 mass% or more and 8 mass% or less are particularly preferable.

In the particularly preferred range, the content may be 5 to 6% by mass, or may be 7 to 8% by mass.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (31.4) 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 is preferably 1% by mass or more and 20% by mass. % or less is more preferably 1% by mass or more and 10% by mass or less is more preferably 1% by mass or more and 5% by mass or less is particularly preferable.

In the liquid crystal composition of the present invention, the total amount of the compound represented by the formula (31.2) and the compound represented by the formula (31.4) is 2% by mass or more and 35% by mass or less based on the total mass of the liquid crystal composition of the present invention. Preferably, it is more preferably 5% by mass or more and 25% by mass or less, and more preferably 7% by mass or more and 15% by mass or less.

Further, the compound represented by the formula (IX-2) is a general formula The compound represented by (IX-2-4) 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).

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

Further, the compound represented by the formula (IX-2-4) is preferably a compound represented by the formula (33.1) to the formula (33.5), and the compound represented by the formula (33.1) and/or the formula (33.3) is more preferred. 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 in consideration of solubility at low temperature, transfer temperature, electrical reliability, birefringence, and the like, the plural represented by the above formula (IX-2-5) can be appropriately combined in each embodiment. Compounds are used. For example, one embodiment of the present invention is one type, and two types in other embodiments, and three types in other embodiments, and four or more types in still other embodiments.

The content of the compound represented by the 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, in one embodiment of the present invention, the content of the compound is 4 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 8 to 45% by mass. In still another embodiment, the content of the compound is 12 to 45% by mass, and in still other embodiments, the content of the compound is 21 to 45% by mass, and in still other embodiments, the content of the compound is 30 to 45% by mass. In still another embodiment, the content of the compound is 31 to 45% by mass, and in still other embodiments, the content of the compound is 34 to 45% by mass. Also, for example, in one embodiment of the present invention with respect to the aforementioned total mass 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 further In another embodiment, 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 in still other embodiments, the content of the compound is 4 to 13% by mass. In still another embodiment, 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, and in still other embodiments, the content of the compound is 4~ 5 mass%.

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

Further, the compound represented by the formula (IX-2-5) is preferably a compound represented by the formula (34.1) to the formula (34.5), 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 (M) is preferably a compound represented by the formula (X). Except for the compound represented by the formula (ii).

(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 number of 1 An alkyl group of ~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 a 1,4-cyclohexylene group and a 1,4-phenylene group. or However, the hydrogen atom on the 1,4-phenylene group may be substituted by a fluorine atom).

The compound which can be combined is not limited, but a plurality of compounds represented by the above formula (X) can be appropriately combined in each embodiment in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. For example, one embodiment of the present invention is one type. Further, another embodiment of the present invention is of two types. Still other embodiments are three types. Still other embodiments are four types. Still other embodiments are five or more types.

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 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 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. In still another embodiment, the content of the compound is 6 to 45% by mass, and in still other embodiments, the content of the compound is 8 to 45% by mass, and in still other embodiments, the content of the compound is 9 to 45% by mass. In still another embodiment, the content of the compound is 11 to 45% by mass, and in still other embodiments, the content of the compound is 12 to 45% by mass. In still another embodiment, the content of the compound is 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 25 to 45% by mass. Also, for example, one of the present invention with respect to the aforementioned total mass In another embodiment, the content of the compound is 2 to 45% by mass. In other embodiments, the content of the compound is 2 to 35% by mass. In still other embodiments, the content of the compound is 2 to 30% by mass. In another embodiment, 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, and in still other embodiments, the content of the compound is 2 to 13% by mass. In still another embodiment, the content of the compound is 2 to 9% by mass, and in still other embodiments, the content of the compound is 2 to 6% by mass, and in still other embodiments, the content of the compound is 2 ~3 mass%.

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

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

(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 alkoxy group having 1 to 4 carbon atoms; base).

The compound which can be combined is not limited, and a plurality of compounds represented by the above formula (X-1) can be appropriately combined in each embodiment in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. For example, one embodiment of the present invention is one type. Further, another embodiment of the present invention is of two types. Still other embodiments are three types. Still other embodiments are four types. Still other embodiments 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 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 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. In still another embodiment, the content of the compound is 5 to 40% by mass, and in still other embodiments, the content of the compound is 6 to 40% by mass, and in still other embodiments, the content of the compound is 7 to 40% by mass. In still 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 18 to 40% by mass. In still another embodiment, the content of the compound is from 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. 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 15% by mass, and in still other embodiments, the content of the compound is 2 to 10% by mass, and in still other embodiments, the content of the compound is 2 to 6% by mass. In still another embodiment, 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 limited, but in view of solubility in low temperature, transfer temperature, electrical reliability, birefringence, etc., in the respective embodiments, a plurality of compounds represented by the above formula (X-1-1) can be appropriately combined. . For example, one embodiment of the present invention is one type. Further, another embodiment of the present invention is of two types. Still other embodiments are three types. Still other embodiments are 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 3 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. In still another embodiment, the content of the compound is 6 to 30% by mass, and still other embodiments The content of the compound is 9 to 30% by mass, and in still other embodiments, the content of the compound is 12 to 30% by mass, and in still other embodiments, the content of the compound is 15 to 30% by mass. In still another embodiment, 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 3 to 30% by mass based on the total mass, and in other embodiments, the content of the compound is 3 to 20% by mass. The content of the compound is 3 to 13% by mass, and in still other embodiments, the content of the compound is 3 to 10% by mass, and in still other embodiments, the content of the compound is 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 (36.1) is contained therein. And a compound represented by the formula (36.2) is preferred.

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-1-2).

(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 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, in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like, the maximum ratio is preferably 20% by mass or less, more preferably 16% by mass or less, more preferably 12% by mass or less, and 10% by mass or less. Very good.

In a more specific preferred embodiment, the content may be 1 to 10% by mass, 2 to 8% by mass, 2 to 7 mass%, 2 to 5 mass%, 4 to 8 mass%, and 5 to 8 The embodiment of mass %.

The compound represented by the above formula (X-1-2) is specifically preferably a compound represented by the formula (37.1) to the formula (37.4), and a compound represented by the formula (37.2) is preferred.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (37.2) 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 preferred, 3-20 mass% is more preferable, 5-15 mass% is more preferable, and 7-13 mass% is particularly preferable.

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 limited, but a compound represented by the above formula (X-1-3) in combination of one type or two types or more is considered in consideration of solubility at low temperature, transfer temperature, electrical reliability, birefringence and the like. Preferably.

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, in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like, the maximum ratio is preferably 20% by mass or less, more preferably 16% by mass or less, and even more preferably 12% by mass. The next is better, and 10% by mass or less is particularly good.

In a more specific preferred embodiment, the content is 1 to 10% by mass, 3 to 8% by mass, 2 to 6% by mass, 2 to 5% by mass, 2 to 4% by mass, and 3 to 6 by mass. %, 4 to 6 mass%, and 5 to 6 mass% of the embodiment.

The compound represented by the above formula (X-1-3) is specifically preferably a compound represented by the formula (38.1) to the formula (38.4), and a compound represented by the formula (38.2) is preferred.

In the liquid crystal composition of the present invention, the content of the compound represented by the 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.

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).

(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 5 carbon atoms; An alkenyl group or an alkoxy group having 1 to 4 carbon atoms).

The compound which can be combined is not limited, but one type to two or more types of the plural compounds represented by the above formula (X-2) are considered in consideration of solubility at low temperature, transfer temperature, electrical reliability, birefringence and the like. good.

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 which can be combined is not limited, but one to two kinds of the plural compounds represented by the above formula (X-2-1) are combined in consideration of solubility at low temperature, transfer temperature, electrical reliability, birefringence, and the like. The above is preferable, and it is more preferable to combine 1 to 3 or more.

The content of the compound represented by the formula (X-2-1) is 1% by mass or more and 30% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. The following is preferable, and it is more preferably 1% by mass or more and 20% by mass or less, and more preferably 1% 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) is contained therein. The compound represented is preferred.

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 30% by mass or less based on the total mass of the liquid crystal composition of the present invention, and 1% by mass and 20% by mass. The following is more preferable, and 1% by mass or more and 10% by mass or less is more 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 limited, but one to two kinds of the plural compounds represented by the above formula (X-2-2) are combined in consideration of solubility at low temperature, transfer temperature, electrical reliability, birefringence, and the like. The above is preferred.

The content of the compound represented by the 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. The following is preferable, and it is more 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 (40.2) is contained therein. The compound represented is preferred.

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

(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 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms; base).

The compound which can be combined is not limited, and one type to two or more types of the plurality of compounds represented by the above formula (X-3) are considered in consideration of low-temperature solubility, transfer temperature, electrical reliability, birefringence and the like. Preferably.

Further, the compound represented by the formula (X-3) used in the liquid crystal composition of the present invention is preferably a compound represented by the 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 limited, but one to two kinds of the plural compounds represented by the above formula (X-3-1) are combined in consideration of solubility at low temperature, transfer temperature, electrical reliability, birefringence, and the like. The above is preferred.

The content of the compound represented by the formula (X-3-1) is preferably 1% by mass or more, more preferably 2% by mass or more, and 3% by mass or more based on the total mass of the liquid crystal composition of the present invention. Better. Also, consider low temperature The solubility, the transfer temperature, the electrical reliability, and the like are preferably limited to 10% by mass or less, more preferably 8% by mass or less, more preferably 6% by mass or less, and particularly preferably 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 (41.2) is contained therein. The compound represented is preferred.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (41.2) is preferably 0.5% by mass or more and 15% by mass or less based on the total mass of the liquid crystal composition of the present invention, and is preferably 1% by mass or more and 10% by mass. % below is better.

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 which can be combined is not limited, and one type to two or more types of the plurality of compounds represented by the above formula (X-4) are considered in consideration of low-temperature solubility, transfer temperature, electrical reliability, birefringence and the like. Preferably, it is more preferable to combine 1 to 3 or more types.

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

(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 limited, but one to two kinds of the plural compounds represented by the above formula (X-4-1) are combined in consideration of solubility at low temperature, transfer temperature, electrical reliability, birefringence, and the like. The above is preferable, and it is more preferable to combine 1 to 3 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. The following is preferable, and 5 mass% or more and 17 mass% or less are more preferable, and 10 mass% or more is 15 or more. The mass % or less is more preferably, and 10% by mass or more and 13% by mass or less is particularly preferable.

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 (42.3) is contained therein. The compound represented is 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 that can be combined is not limited, but considering the solubility at low temperature, transfer temperature, electrical reliability, birefringence, etc. One to two or more of the plurality of compounds represented by the formula (X-4-3) is more preferably one or more than 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 even more preferably 10% by mass or more and 13% by mass or less.

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

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 which can be combined is not limited, but one type to two or more types of the plurality of compounds represented by the above formula (X-5) are considered in consideration of solubility at low temperature, transfer temperature, electrical reliability, birefringence and the like. Preferably, it is more preferable to combine 1 to 3 or more types.

Further, the compound represented by the formula (X-5) used in the liquid crystal composition of the present invention 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 which can be combined is not limited, but one to two kinds of the plural compounds represented by the above formula (X-5-1) are combined in consideration of solubility at low temperature, transfer temperature, electrical reliability, birefringence and the like. The above is preferable, and it is more preferable to combine 1 to 3 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 (43.2) is contained therein. The compound represented is preferred.

Further, the compound represented by the formula (X) 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, at least one of X ¹¹¹ to X ¹¹⁷ represents a fluorine atom, and R ¹¹⁰ represents an alkyl group having 1 to 5 carbon atoms and a carbon number of 2 to 5; An alkenyl group or an alkoxy group having 1 to 4 carbon atoms, and Y ¹¹ represents a fluorine atom or -OCF ₃ ).

The compound which can be combined is not limited, and it is preferable to combine one to three or more of the plurality of compounds represented by the above formula (XI) in consideration of low-temperature solubility, transfer temperature, electrical reliability, birefringence and the like. .

The content of the compound represented by the formula (XI) is considered in view of low temperature solubility, transfer temperature, electrical reliability, birefringence and the like. In each embodiment, there are upper limit values and lower limit values. 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. In still another embodiment, the content of the compound is 5 to 30% by mass, and in still other embodiments, the content of the compound is 7 to 30% by mass, and in still other embodiments, the content of the compound is 9 to 30% by mass. In still another embodiment, 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. 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 15 to 30% by mass. In still another embodiment, the content of the compound is 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. The content of the compound is 2 to 20% by mass, and in still other embodiments, the content of the compound is 2 to 15% by mass, and in still other embodiments, the content of the compound is 2 to 10% by mass. In still another embodiment, the content of the compound is 2 to 5% by mass.

When the liquid crystal composition of the present invention is used for a liquid crystal display device having a small liquid crystal cell gap, it is suitable to use a plurality of compounds represented by the general formula (XI). When it is used for a liquid crystal display element having a small driving voltage, it is suitable to form a plurality of compounds represented by the general formula (XI). Moreover, it is used for liquid crystal display elements used in low temperature environments. In this case, it is suitable to make the content of the compound represented by the general 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 general 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 ¹¹⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms).

The compound which can be combined is not limited, but a plurality of compounds represented by the above formula (XI-1) can be appropriately combined in each embodiment in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. For example, in one embodiment of the present invention, one type is used, and in another embodiment, two types are combined, and in still other embodiments, three types or more are combined.

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 6 mass% or more and 15 mass% or less, and even more preferably 9 mass% or more and 12 mass% or less. Very good.

Further, the compound represented by the formula (XI-1) used in the liquid crystal composition of the present invention is specifically a formula (45.1) to a formula (45.4). The compound represented by the formula (45.2) to the formula (45.4) is preferred, and the compound represented by the formula (45.2) and/or the formula (45.3) 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. 30% by mass or less is more preferable, 2% by mass or more and 20% by mass or less is more preferable, and 2% by mass or more and 10% by mass or less is more preferably 2% by mass or more and 5% by mass or less.

In the above-mentioned range, the content is, for example, 2% by mass or more and 4% by mass or less, 2% by mass or more and 3% by mass or less, 2% by mass or more and 2.5% by mass or less, 2.5% by mass or more and 5% by mass or less. 3% by mass or more and 5% by mass or less, 4% by mass or more and 5% by mass or less, and 4.5% by mass or more and 5% by mass or less.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (45.3), considering the solubility at low temperature, the transfer temperature, and the electrical reliability The amount of the liquid crystal composition of the present invention is preferably 1% by mass or more and 25% by mass or less, more preferably 1% by mass or more and 20% by mass or less, and more preferably 1% by mass or more and 10% by mass or less. Preferably, 1% by mass or more and 5% by mass or less are particularly preferred.

In the case where the liquid crystal composition of the present invention contains the compound represented by the formula (45.2) and the compound represented by the formula (45.3), the total content thereof is 1% by mass or more based on the total mass of the liquid crystal composition of the present invention. 25 mass% or less is preferable, 2 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 7 mass% or less are especially preferable.

In the particularly preferred range, the content may be 3 to 5% by mass, or may be 6 to 7% by mass.

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, 2 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 7 mass% or less are especially preferable.

In the case where the liquid crystal composition of the present invention contains three kinds of compounds represented by the formula (45.2) to the formula (45.4), the total content thereof is 1% by mass or more and 35% by mass based on the total mass of the liquid crystal composition of the present invention. It is more preferable that it is 5% or more and 25% by mass or less, and more preferably 10% by mass or more and 20% by mass or less.

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 limited, and the complex compound represented by the above formula (XI-2) can be suitably combined in each embodiment in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. For example, in one embodiment of the present invention, one type is used, and in another embodiment, two types are combined, and in still other embodiments, three types or more are combined.

The content of the compound represented by the 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. 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 6 mass% or more and 15 mass% or less, and even more preferably 9 mass% or more and 12 mass% or less. Very good.

Further, the compound represented by the formula (XI-2) used in the liquid crystal composition of the present invention, specifically, the compound represented by the formula (45.11) to the formula (45.14) is preferable, and the formula (45.12) is contained therein. 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 (X) is preferably a compound selected from the group represented by the formula (XII).

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

The compound which can be combined is not limited, and it is preferable to combine one to three or more of the plurality of compounds represented by the above formula (XII) in consideration of low-temperature solubility, transfer temperature, electrical reliability, birefringence and the like. It is more preferable to combine 1 to 4 or more.

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

(wherein R ¹²⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms).

The compound which can be combined is not limited, but one type to two or more types of the plurality of compounds represented by the above formula (XII-1) are considered in consideration of low-temperature solubility, transfer temperature, electrical reliability, birefringence and the like. Preferably, it is more preferable to combine 1 to 3 or more types.

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

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

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

(wherein R ¹²⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms).

The compound which can be combined is not limited, but one type to two or more types of the plurality of compounds represented by the above formula (XII-2) are considered in consideration of low-temperature solubility, transfer temperature, electrical reliability, birefringence and the like. Preferably, it is more preferable to combine 1 to 3 or more types.

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

Further, the compound represented by the formula (XII-2) used in the liquid crystal composition of the present invention, specifically, the compound represented by the formula (47.1) to the formula (47.4) is preferable, and the formula (47.2) is contained therein. The compound represented by the formula (47.4) is preferred.

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

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

The type of the compound which can be combined is not particularly limited, but one or two kinds of the plural compounds represented by the above formula (XIII) are preferred, and one to three types are more preferable, and one type is used. The type is better.

The content of the compound represented by the formula (XIII) 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. In still another embodiment, the content of the compound is 5 to 30% by mass, and in still other embodiments, the content of the compound is 7 to 30. In other embodiments, the content of the compound is 9 to 30% by mass, and in still other embodiments, the content of the compound is 11 to 30% by mass, and in still other embodiments, the content of the compound is It 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 16 to 30% by mass. 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. The content of the compound is 2 to 20% by mass, and in still other embodiments, the content of the compound is 2 to 15% by mass, and in still other embodiments, the content of the compound is 2 to 10% by mass. In still another embodiment, the content of the compound is 2 to 5% by mass.

When the liquid crystal composition of the present invention is used for a liquid crystal display device having a small liquid crystal cell gap, it is suitable to use a compound having a content represented by the formula (XIII). When it is used for a liquid crystal display element having a small driving voltage, it is suitable to form a plurality of compounds represented by the general formula (XIII). Moreover, in the case of being used for a liquid crystal display element used in a low-temperature environment, it is suitable to make the content of the compound represented by the 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-I).

(wherein R ¹³⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms).

The compound represented by the formula (XIII-1) is preferably contained in an amount of 1% by mass or more and 25% by mass or less based on the total mass of the liquid crystal composition of the present invention, and more preferably 3% by mass or more and 25% by mass or less. It is more preferably 5 mass% or more and 20 mass% or less, and more preferably 10 mass% or more and 15 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 (XIII) is preferably a compound represented by the formula (XIII-2).

(wherein R ¹³⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms).

The type of the compound which can be combined is not particularly limited, and it is preferred to contain one to two or more of the plurality of compounds represented by the above formula (XIII-2).

The compound represented by the formula (XIII-2) is preferably 5% by mass or more and 25% by mass or less based on the total mass of the liquid crystal composition of the present invention, and more preferably 6% by mass or more and 25% by mass or less. It is more preferably 8 mass% or more and 20 mass% or less, and more preferably 10 mass% or more and 15 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) or the formula (49.2) is preferred.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (49.2) is 1% by mass or more based on the total mass of the liquid crystal composition of the present invention in consideration of low-temperature solubility, transfer temperature, electrical reliability, and the like. 25 mass% or less is preferable, 1 mass% or more and 15 mass% or less are more preferable, 2 mass% or more and 10 mass% or less are more preferable, and 3 mass% or more and 7 mass% or less are especially preferable.

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

(wherein R ¹³⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms).

The type of the compound which can be combined is not particularly limited, and it is preferred to contain one to two kinds of the plural compounds represented by the above formula (XIII-3).

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

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

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

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

The type of the compound that can be combined is not limited, but in consideration of solubility at low temperature, transfer temperature, electrical reliability, birefringence, and the like, the complex combination represented by the above formula (XIV) can be appropriately combined in each embodiment. Things. 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) 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 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. In still another embodiment, the content of the compound is 8 to 40% by mass, and in still other embodiments, the content of the compound is 11 to 40% by mass, and in still other embodiments, the content of the compound is 12 to 40% by mass. 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. 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 25 to 40% by mass.

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

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

(wherein R ¹⁴⁰ represents an alkyl group having 1 to 7 carbon atoms, an alkenyl group having 2 to 7 carbon atoms or an alkoxy group having 1 to 7 carbon atoms).

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

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 preferably a compound. .

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

(wherein R ¹⁴⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and X ¹⁴¹ to X ¹⁴⁴ each independently represent a fluorine atom or hydrogen. An atom, Y ¹⁴ represents a fluorine atom, a chlorine atom or -OCF ₃ ).

The type of the compound which can be combined is not limited, and the complex compound represented by the above formula (XIV-2) can be suitably combined in each embodiment in consideration of solubility at low temperature, transfer temperature, electrical reliability, and birefringence. For example, one embodiment of the present invention is one type. Further, other embodiments of the present invention are two types. Alternatively, still another embodiment of the present invention is three types. Further, still another embodiment of the present invention is of four types. Alternatively, still another embodiment of the present invention is five or more types.

The content of the compound represented by the formula (XIV-2) is considered The properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence have upper limit values and lower limit values in the respective embodiments.

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. In still another embodiment, the content of the compound is 8 to 40% by mass, and in still other embodiments, the content of the compound is 10 to 40% by mass, and in still other embodiments, the content of the compound is 11 to 40% by mass. In still another embodiment, the content of the compound is 12 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. In still another embodiment, the content of the compound is from 21 to 40% by mass. 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 3 to 40% by mass based on the total mass, and in other embodiments, the content of the compound is 3 to 35% by mass. 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 in still other embodiments, the content of the compound is 3 to 15% by mass. In still 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). Further, in the case of a liquid crystal composition of a liquid crystal display element having a fast reaction speed, the compound represented by the general formula (XIV-2) is used. It is suitable to make the content of the substance less.

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

(wherein R ¹⁴⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms).

The content of the compound represented by the formula (XIV-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. The following is preferable, and it is more preferably 6 mass% or more and 17 mass% or less, more preferably 9 mass% or more and 15 mass% or less, and particularly preferably 12 mass% or more and 14 mass% or less.

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 preferred.

In the liquid crystal composition of the present invention, the formula represented by the formula (54.2) 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, more preferably 1% by mass or less and 10% by mass or less, and 2% by mass or more and 8% by mass or less. Better.

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

(wherein R ¹⁴⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms).

The content of the compound represented by the formula (XIV-2-3) is 5% by mass or more and 30% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. In the following, it is preferably 9% by mass or more and 27% by mass or less, more preferably 12% by mass or more and 24% by mass or less, and particularly preferably 12% by mass or more and 20% by mass or less.

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 preferred.

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

(wherein R ¹⁴⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms).

The type of the compound that can be combined is not limited, but in consideration of solubility at low temperature, transfer temperature, electrical reliability, birefringence, and the like, the plural represented by the above formula (XIV-2-4) can be appropriately combined in each embodiment. Compound. 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) 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 35 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 mass%. In still another embodiment, the content of the compound is 8 to 35% by mass, and in still other embodiments, the content of the compound is 9 to 35. In other embodiments, the content of the compound is 10 to 35 mass%, and in still other embodiments, the content of the compound is 18 to 35 mass%, and in still other embodiments, the content of the compound is It 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 24 to 35 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. The content of the compound is 2 to 25% by mass. In still another embodiment, 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. In still another embodiment, the content of the compound is 2 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 / or a compound represented by the formula (56.4) is preferred.

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

(wherein R ¹⁴⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms).

The content of the compound represented by the formula (XIV-2-5) is 5% by mass or more and 25% by mass based on the total mass of the liquid crystal composition of the present invention in consideration of solubility at low temperature, transfer temperature, electrical reliability, and the like. The following is preferable, and 10% by mass or more and 22% by mass or less are more preferable, and 13% by mass or more and 18% by mass or less are more preferably, and 13% by mass or more and 15% by mass or less are particularly preferable.

Further, the compound represented by the formula (XIV-2-5), specifically, the compound represented by the formula (57.1) to the formula (57.4). Among them, a compound represented by the formula (57.1) is preferred.

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

(wherein R ¹⁴⁰ represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms).

The content of the compound represented by the formula (XIV-2-6) is 5% by mass or more and 25% 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 10% by mass or more and 22% by mass or less, more preferably 15% by mass or more and 20% by mass or less, and particularly 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 preferably contained. .

The liquid crystal composition of the first embodiment of the present invention may contain any one or two or more kinds of the compounds represented by the following formula (X). However, the compound represented by the formula (ii) and the compound Except for the compound represented by the formula (L).

In the general formula (X"), R ^X1 and R ^X2 independently represent an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms or an alkenyl group having 2 to 10 carbon atoms.

The alkyl group, the alkoxy group, and one methylene group present in the alkenyl group or two or more methylene groups which are not adjacent may be substituted with -O- or -S-.

One or two or more hydrogen atoms present in the alkyl group, the alkoxy group and the above alkenyl group may be substituted with a fluorine atom or a chlorine atom.

In the general formula (X"), u and v independently of each other represent 0, 1, or 2, but u+v is 2 or less.

In the general formula (X"), M ^X1 , M ^X2 and M ^X3 independently of each other represent a group selected from the group consisting of: (a) trans-1,4-cyclohexylene (one present in this group) The methylene group or two or more methylene groups which are not adjacent may be substituted with -O- or -S-), and (b) 1,4-phenylene group (one of which exists in the group -CH= Or more than two non-contiguous -CH= can be replaced by -N=).

Each of the hydrogen atoms contained in the above-mentioned group (a) or the group (b) may be substituted with a cyano group, a fluorine atom, a trifluoromethyl group, a trifluoromethoxy group or a chlorine atom. M ^X2 and/or M ^X3 are in the case of a plurality of cases, and they may be the same or different.

In the general formula (X"), L ^X1 , L ^X2 and L ^X3 independently of each other represent a single bond, -COO-, -OCO-, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -OCF ₂ -, -CF ₂ O-, -CH=CH- or -C≡C-. L ^X1 and/or L ^X3 are in the case of a plurality of cases, which may be the same Can be different.

In the general formula (X"), X ^X1 and X ^X2 each independently represent a trifluoromethyl group, a trifluoromethoxy group or a fluorine atom, but any of X ^X1 and X ^X2 means a fluorine atom.

In the general formula (X"), the ring structure in which R ^{X1 is} bonded is a phenyl group (aromatic), R ^X1 is a linear alkyl group having 1 to 5 carbon atoms, and the linear carbon number is 1 The alkoxy group of ~4 (or more) and the alkenyl group having 4 to 5 carbon atoms are preferred. The ring structure in which R ^{X1 is} bonded is cyclohexane, meme and two. In the case of a saturated ring structure such as an alkane or the like, R ^X1 is 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 chain. The alkenyl group having 2 to 5 carbon atoms is preferred.

In the general formula (X"), the ring structure in which R ^{X2 is} bonded is a phenyl group (aromatic), R ^X2 is a linear alkyl group having 1 to 5 carbon atoms, and the linear carbon number is 1 The alkoxy group of ~4 (or more) and the alkenyl group having 4 to 5 carbon atoms are preferred. The ring structure of the R ^X2 bond is cyclohexane, megbrane and In the case of a saturated ring structure such as an alkane, R ^X2 is 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 chain. The alkenyl group having 2 to 5 carbon atoms is preferred.

When the reaction rate of the liquid crystal display device of the present invention is improved, R ^X1 and/or R ^X2 alkenyl group is preferable, and reliability such as voltage holding ratio is considered, and R ^X1 and/or R ^X2 is an alkyl group. It is better. In the case of the above alkenyl group, the structure represented by the formula (Alkenyl-1) to (Alkenyl-4) described below is preferred. In each formula, each alkenyl ring structure is bonded to the right end of the ring.

In the case where the liquid crystal composition of the present invention contains a reactive monomer, the structure represented by the formula (Alkenyl-2) and the formula (Alkenyl-4) is preferred, and the structure represented by the formula (Alkenyl-2) is more preferable.

In the case where the compound represented by the formula (X") is required to satisfy the chemical stability of the liquid crystal composition, it is preferred that the compound does not have a sulfur atom, a nitrogen atom, an ester group, a cyano group or a chlorine atom in the molecule.

In the case of using the compound represented by the general formula (X"), the dielectric anisotropy Δε value of the liquid crystal composition is preferably from -2.0 to -6.0 at 25 °C. , -2.5 to -5.0 is better, -2.5 to -4.0 is particularly good, but when it is more detailed, the situation of the reaction speed is emphasized, and the range of -2.5 to -3.4 is preferred, and the driving voltage is emphasized. ~-4.0 is preferred.

The type of the combinable compound is not particularly limited, but it is preferably used in combination with a compound represented by the formula (X)) in view of desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound is, for example, one type according to one embodiment of the present invention, or two types of other embodiments of the present invention. Further, other embodiments of the present invention are three types. Further, other embodiments of the present invention are There are four types of other embodiments of the present invention. Other embodiments of the present invention are six types. Other embodiments of the present invention are seven types. 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 formula (X") depends on the solubility at low temperature, transfer temperature, electrical reliability, birefringence, process suitability, dripping marks, afterimage, It is suitable to adjust the properties required for dielectric anisotropy and the like.

The lower limit of the preferred content is, for example, 1% in terms of one embodiment of the present invention with respect to the total amount of the liquid crystal composition of the present invention. Or other embodiments of the invention are 10%. Further, another embodiment of the present invention is 20%. Further, other embodiments of the present invention are 30%. Further, other embodiments of the present invention are 40%. Further, other embodiments of the present invention are 50%. Further, another embodiment of the present invention is 55%. Further, other embodiments of the present invention are 60%. Further, the present invention His implementation is 65%. Further, other embodiments of the present invention are 70%. Further, other embodiments of the present invention are 75%. Further, other embodiments of the present invention are 80%.

Further, the upper limit of the preferable content is, for example, 95% in one embodiment of the present invention with respect to the total amount of the liquid crystal composition of the present invention. Further, another embodiment of the present invention is 85%. Further, other embodiments of the present invention are 75%. Further, other embodiments of the present invention are 65%. Further, another embodiment of the present invention is 55%. Further, other embodiments of the present invention are 45%. Further, another embodiment of the present invention is 35%. Further, other embodiments of the present invention are 25%.

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

The value of the refractive index anisotropy Δn of the liquid crystal composition containing the compound represented by the general formula (X") is preferably 0.08 to 0.13 at 25 ° C, but more preferably 0.09 to 0.12. More specifically, Corresponding to the case of a thin liquid crystal cell gap, 0.10 to 0.12 is preferable, and in the case of a thick liquid crystal cell gap, 0.08 to 0.10 is preferable.

The liquid crystal composition of the present invention has a rotational viscosity (γ1) of preferably 150 or less, more preferably 130 or less, and particularly preferably 120 or less.

Further, the compound represented by the formula (X") is preferably a compound represented by the formula (XI").

Formula (XI ") in, R ^X1 represents general formula (X") in the same meaning R ^X1, M ^X1 represents general formula (X ") in the same meaning as M ^X1, R ^X2 represents general formula ( The meaning of R ^X2 in X") is the same.

The lower limit of the preferable content in the case of containing the compound represented by the formula (XI") is, for example, 1% in terms of the total amount of the liquid crystal composition of the present invention. Another embodiment of the present invention is 5%, or another embodiment of the present invention is 10%. Further, another embodiment of the present invention is 11%. Further, another embodiment of the present invention is 14%. Further, the present invention is other The embodiment is 15%, and another embodiment of the present invention is 16%. Further, another embodiment of the present invention is 17%. Further, another embodiment of the present invention is 18%. Further, other embodiments of the present invention Further, another embodiment of the present invention is 20%, and another embodiment of the present invention is 21%. Further, another embodiment of the present invention is 22%. Further, another embodiment of the present invention is 23 Further, other embodiments of the present invention are 25%.

Further, the upper limit of the preferable content is, for example, 50% in one embodiment of the present invention with respect to the total amount of the liquid crystal composition of the present invention. Further, another embodiment of the present invention is 45%. Further, other embodiments of the present invention are 40%. Further, another embodiment of the present invention is 35%. In addition Another embodiment of the present invention is 30%. Further, other embodiments of the present invention are 25%. Further, other embodiments of the present invention are 24%. Further, other embodiments of the present invention are 23%. Further, other embodiments of the present invention are 22%. Further, other embodiments of the present invention are 21%. Further, other embodiments of the present invention are 20%.

In the case where the liquid crystal composition of the present invention contains the compound represented by the formula (XI), the compound represented by the formula (XI") is contained in an amount of 5 to 35% by mass based on the total mass of the liquid crystal composition. Preferably, it is preferably 10 to 30% by mass, more preferably 15 to 25% by mass, and particularly preferably 19 to 23% by mass.

In the formula (XI"), R ^X1 represents an alkyl group having 1 to 8 carbon atoms and an alkenyl group having 2 to 8 carbon atoms, and preferably an alkyl group having 1 to 8 carbon atoms is more preferably carbon. The alkyl group having 3 to 5 atoms is more preferably an alkyl group having 3 or 5 carbon atoms, more preferably a straight chain, and a linear chain is preferred.

In the formula (XI"), R ^X2 represents an alkyl group having 1 to 8 carbon atoms, an alkenyl group having 2 to 8 carbon atoms, an alkoxy group having 1 to 8 carbon atoms or an alkene having 2 to 8 carbon atoms. The oxy group is preferably an alkyl group having 1 to 8 carbon atoms or an alkoxy group having 1 to 8 carbon atoms, and preferably an alkyl group having 3 to 5 carbon atoms or an alkyl group having 2 to 4 carbon atoms. The oxy group is more preferably an alkyl group having 3 or 5 carbon atoms or an alkoxy group having 2 or 4 carbon atoms, more preferably an alkoxy group having 2 or 4 carbon atoms, and a linear chain. Preferably.

When the reaction rate of the liquid crystal display device of the present invention is improved, the R ^{X 2} -based alkenyl group is preferable, and the reliability of the voltage holding ratio or the like is important, and the R ^X2 -based alkyl group is preferable.

The type of the compound which can be combined is not particularly limited, but it is preferably used in combination with a compound represented by the formula (XI) in view of the desired properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence. The type of the compound is, for example, one type according to one embodiment of the present invention, or two types of other embodiments of the present invention. Further, other embodiments of the present invention are three types. Further embodiments of the present invention There are four types of other embodiments of the present invention. In addition, the other embodiments of the present invention are six types. In addition, other embodiments of the present invention are seven 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 case of using only one type of the compound represented by the formula (XI), it is preferred to use two or more kinds, and it is preferred to use three or more kinds. In the case of using two or more compounds represented by the formula (XI)) , a combination of R ^X1 represents a carbon atom of an alkyl group having 3 to 5, R ^X2 represents an alkoxy compound having 2 to 4 carbon atoms, a group of formula (XI ") represented by (hereinafter sometimes referred to as compound [alpha]) to When it is used in combination with a compound represented by the formula (XI) other than the compound α, the content of the compound α is based on the total mass of the plurality of compounds represented by the formula (XI). 50% by mass or more is preferable, 70% by mass or more is more preferable, and 80% by mass or more is more preferable.

In the formula (XI"), M ^X1 represents 1,4-cyclohexylene, 1,4-phenylene or tetrahydropyran-2,5-diyl. M ^X1 represents 1,4-phenylene In this case, one or more hydrogen atoms of the 1,4-phenylene group may be substituted with a fluorine atom. M ^X1 is preferably a 1,4-cyclohexylene group or a 1,4-phenylene group.

More specifically, in the case of using a liquid crystal display device and a liquid crystal display produced by using the liquid crystal composition of the present invention, the reaction rate is emphasized, and M ^X1 is preferably a 1,4-phenylene group. On the other hand, in the case where the operating temperature range on the high temperature side is broadened (increased Tni), it is preferable that M ^X1 represents 1,4-cyclohexylene. Further, when Tni is emphasized, M ^X1 represents a case where 1,4-phenylene is present, and one or more hydrogen atoms in the benzene ring may be substituted with fluorine, but 0 to 2 hydrogen atoms are substituted with fluorine. The atom is preferably one, and it is more preferable that 0 of the hydrogen atoms are substituted with a fluorine atom (unsubstituted 1,4-phenylene group). In the case where the two hydrogen atoms of the above-mentioned phenyl group are substituted with a fluorine atom, M ^X1 represents a 2,3-difluoro-1,4-phenylene group.

The compound represented by the formula (XI") is preferably a compound selected from the group consisting of the following formula (XI"-1) and/or the formula (XI"-2).

In the above formula, R ^X11 , R ^X21 , R ^X12 and R ^X22 each independently represent an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms or carbon. The number of atoms is 2 to 5 alkenyloxy).

When R ^X21 , R ^X12 and R ^X22 are alkenyl groups, the number of carbon atoms of the alkenyl group is preferably 4 to 5. R ^X11 is preferably an alkyl group or an alkenyl group, and more preferably an alkyl group. R ^X21 and R ^X22 are preferably an alkyl group or an alkoxy group. R ^X12 is preferably an alkyl group or an alkenyl group, and more preferably an alkyl group.

When the absolute value of Δε of the compound represented by the above formula is increased, R ^X11 , R ^X21 , R ^X12 and R ^X22 are preferably an alkoxy group or an alkenyloxy group, and an alkoxy group is more preferable.

The compound represented by the formula (XI") is specifically the following formula (XI"-1-1) to (XI"-1-8) and the formula (XI"-2-1) to the formula (XI). The compound represented by -2-4) is preferred.

Formula (XI"- in the compound represented by the above formula (XI"-1-1) to (XI"-1-8) and formula (XI"-2-1) to formula (XI"-2-4) 1-1)~ Compounds represented by formula (XI"-1-4), formula (XI"-2-1) and formula (XI"-2-2) are more preferable, formula (XI"-1-1 The compound represented by the formula (XI"-1-3), the formula (XI"-2-1) and the formula (XI"-2-2) is more preferably, the formula (XI"-1-1), The compounds represented by the formula (XI"-1-3) and the formula (XI"-2-1) are particularly preferred.

The refractive index required for the liquid crystal composition of the present invention has a relatively low value of the refractive index Δn (substantially less than 0.100), and the formula (XI"-1-1) The compound represented by the formula (XI"-1-3) is most preferable. When the value of the refractive index required for the liquid crystal composition of the present invention is relatively high (approximately 0.100 or more). The compound represented by XI"-2-1) is optimal.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (XI"-1-1) is considered in relation to 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. 3 mass% or more and 20 mass% or less are preferable, and 5 mass% or more and 18 mass% or less are more preferable, and 7 mass% or more and 15 mass% or less are more preferable, and 9 mass% or more and 13 mass% or less are especially preferable.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (XI"-2-1) is considered to be the low-temperature solubility, the transfer temperature, the electrical reliability, etc., with respect to the total mass of the liquid crystal composition of the present invention. 3 mass% or more and 30 mass% or less are preferable, and 4 mass% or more and 18 mass% or less are more preferable, and 5 mass% or more and 15 mass% or less are more preferable, and 7 mass% or more and 13 mass% or less are especially preferable.

In the liquid crystal composition of the present invention, when the compound represented by the formula (XI"-1-1) and the compound represented by the formula (XI"-2-1) are used, the total content of the two compounds is relatively The total mass of the liquid crystal composition is preferably 10% by mass or more and 30% by mass or less, more preferably 15% by mass or more and 25% by mass or less, and still more preferably 19% by mass or more and 23% by mass or less.

When the compound represented by the formula (XI") has an alkenyl group, the compound represented by the formula (XI") is specifically selected from the following formula (XI"-1-10) to (XI"-1. -13) and a compound of the group represented by the formula (XI"-2-10) to the formula (XI"-2-11) are preferred. In the formula, R ^X22 represents the same meaning as R ^X22 in the formula (XI"-2).

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

Of formula (XII ") in, R ^X1 represents general formula (X") in the same meaning R ^X1, M ^X2 represents general formula (X ") in the same meaning as M ^X2, R ^X2 represents general formula ( The meaning of R ^X2 in X") is the same.

The lower limit of the preferable content of the case where the compound represented by the formula (XII") is contained, relative to the total amount of the liquid crystal composition of the present invention, For example, in one embodiment of the invention, it is 1%. Or other embodiments of the invention are 5%. Or other embodiments of the invention are 10%. Further, another embodiment of the present invention is 11%. Further, another embodiment of the present invention is 15%. Further, another embodiment of the present invention is 18%. Further, other embodiments of the present invention are 19%. Further, other embodiments of the present invention are 20%. Further, other embodiments of the present invention are 23%. Further, other embodiments of the present invention are 25%. Further, other embodiments of the present invention are 26%. Further, other embodiments of the present invention are 27%. Further, other embodiments of the present invention are 28%. Further, other embodiments of the present invention are 29%. Further, other embodiments of the present invention are 30%.

Further, the upper limit of the preferable content is, for example, 50% in one embodiment of the present invention with respect to the total amount of the liquid crystal composition of the present invention. Further, another embodiment of the present invention is 45%. Further, other embodiments of the present invention are 43%. Further, other embodiments of the present invention are 42%. Further, other embodiments of the present invention are 41%. Further, other embodiments of the present invention are 40%. Further, other embodiments of the present invention are 39%. Further, other embodiments of the present invention are 38%. Further, another embodiment of the present invention is 35%. Further, another embodiment of the present invention is 33%. Further, other embodiments of the present invention are 30%.

In the formula (XII"), R ^X1 represents an alkyl group having 1 to 8 carbon atoms, an alkenyl group having 2 to 8 carbon atoms, an alkoxy group having 1 to 8 carbon atoms or an alkene having 2 to 8 carbon atoms. The oxy group is preferably an alkyl group having 1 to 8 carbon atoms or an alkenyl group having 2 to 8 carbon atoms, preferably an alkyl group having 1 to 8 carbon atoms, more preferably 2 to 8 carbon atoms. Further, the alkyl group of 5 is more preferably an alkyl group having 3 to 5 carbon atoms, and the alkyl group and the alkenyl group are preferably linear.

In the formula (XII"), R ^X2 represents an alkyl group having 1 to 8 carbon atoms, an alkenyl group having 2 to 8 carbon atoms, an alkoxy group having 1 to 8 carbon atoms or an alkene having 2 to 8 carbon atoms. The oxy group is preferred. Among these groups, R ^X2 represents an alkyl group having 1 to 8 carbon atoms or an alkoxy group having 1 to 8 carbon atoms, preferably an alkyl group having 1 to 5 carbon atoms or The alkoxy group having 1 to 4 carbon atoms is more preferably an alkoxy group having 1 to 4 carbon atoms, more preferably an alkoxy group having 2 or 3 carbon atoms. Straight chain is preferred.

In the case where the liquid crystal display element of the present invention has an improved reaction rate, the R ^X2 alkenyl group is preferable, and the reliability of the voltage holding ratio or the like is important, and the R ^X2 alkyl group is preferable.

The compound represented by the formula (XII") is further preferably a compound represented by the formula (XII"-1) and the formula (XII"-2).

In the above formulas, R ^X1 represents "the same meaning of R ^X1, R ^X2 represents general formula (X in the general formula (X)") R ^X2 in the same sense.

The compound represented by the formula (XII"-1) is specifically a compound represented by the following formula (XII"-1-1) to (XII"-1-6).

Among the compounds represented by the formula (XII"-1-1) to (XII"-1-6), the compound represented by the formula (XII"-1-1) to the formula (XII"-1-4) is more Preferably, the compound represented by the formula (XII"-1-1) to the formula (XII"-1-3) is more preferably, the formula (XII"-1-1) and the formula (XII"-1-2) The compound represented is particularly preferred.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (XI"-1-2) is considered in relation to 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. 1% by mass or more and 30% by mass or less is more preferable, and 5% by mass or more and 20% by mass or less are more preferable, and 8% by mass or more and 18% by mass or less are more preferably 10% by mass or more and 15% by mass or less.

When the compound represented by the formula (XII"-1) has an alkenyl group, specifically, a compound represented by the following formula (XII"-1-10) to (XII"-1-13) is preferred. In the formula, R ^X2 represents the same meaning as R ^X2 in the formula (X").

The compound represented by the formula (XII"-2) is specifically a compound represented by the following formula (XII"-2-1) to (XII"-2-6).

Among the compounds represented by the formula (XII"-2-1) to (XII"-2-6), the compound represented by the formula (XII"-2-1) to the formula (XII"-2-4) is more preferable. Further, the compound represented by the formula (XII"-2-1) to the formula (XII"-2-3) is more preferably represented by the formula (XII"-2-1) and the formula (XII"-2-3). The compound is particularly good.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (XII"-2-1) is considered in relation to 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. 1% by mass The above 30% by mass or less is preferable, and 1% by mass or more and 20% by mass or less is more preferable, and 1% by mass or more and 15% by mass or less is more preferably, and 3% by mass or more and 9% by mass or less is particularly preferable.

When the compound represented by the formula (XII"-2) has an alkenyl group, the compound represented by the formula (XII"-2), specifically, the following formula (XII"-2-10) to (XII) The compound represented by -2-13) is preferred. In the formula, R ^X2 represents the same meaning as R ^X2 in the formula (X").

The kind of the compound which can be combined is not particularly limited, but it is suitable to use the compound represented by the formula (XII"-2) in view of the desired properties such as solubility at low temperature, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one type according to one embodiment of the present invention, or two types of other embodiments of the present invention. Further, other embodiments of the present invention are three types. The other embodiments of the present invention are five types. The other embodiments of the present invention are six types. In addition, other embodiments of the present invention are seven types. There are eight types. Other embodiments of the present invention are nine types. Further, other embodiments of the present invention are 10 or more types.

In the case of using a compound represented by the above formula (XII"), it is preferred to use a compound represented by the formula (XII"-2-1) to the formula (XII"-2-4), and the formula (XII) is preferred. The content of the compound represented by the formula (XII)-2-4) is preferably 50% by mass or more based on the total mass of the compound represented by the formula (XII"), and is preferably 70% by mass or more. More preferably, 80% by mass or more is more preferable.

In the case of using a compound represented by the general formula (XII"), a compound represented by the formula (XII"-2-1) to the formula (XII"-2-3) is preferably used, and the formula (XII) is preferred. The content of the compound represented by the formula (XII)-2-3 is preferably 50% by mass or more based on the total mass of the compound represented by the formula (XII"), and is preferably 70% by mass or more. More preferably, 80% by mass or more is more preferable.

In the case of using a compound represented by the general formula (XII"), a compound represented by the formula (XII"-2-1) and the formula (XII"-2-3) is preferably used, and the formula (XII) is preferred. The content of the compound represented by the formula (-2-1) and the formula (XII"-2-3) is preferably 50% by mass or more based on the total mass of the compound represented by the formula (XII"), and is preferably 70% by mass or more. More preferably, 80% by mass or more is more preferable.

Further, as the compound represented by the formula (X"), a compound represented by the formula (XIII") can be used.

In the formula (XIII"), R ^X1 represents the same meaning as R ^X1 in the formula (X"), M ^X31 represents the same meaning as M ^X1 in the formula (X"), and R ^X2 represents a formula ( X X) has the same meaning of R ^X2 , W represents 0 or 1, X ³¹ ~ X ³⁶ represents a hydrogen atom or a fluorine atom, but a combination of X ³¹ and X ³² , a combination of X ³³ and X ³⁴ , X ³⁵ and X A combination of at least one of the combinations of ³⁶ is a fluorine atom.

The type of the compound which can be combined is not particularly limited, but it is preferably used in combination with a compound represented by the formula (XIII") in view of the desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound is, for example, one type according to one embodiment of the present invention, or two types of other embodiments of the present invention. Further, other embodiments of the present invention are three types. Further embodiments of the present invention There are four types of other embodiments of the present invention. In addition, the other embodiments of the present invention are six types. In addition, other embodiments of the present invention are seven types. Further, other embodiments of the present invention are nine types. Further, other embodiments of the present invention are 10 or more types.

The lower limit of the preferable content in the case of containing the compound represented by the formula (XIII") is, for example, 1% in terms of the total amount of the liquid crystal composition of the present invention. Another embodiment of the present invention is 5%, or another embodiment of the present invention is 10%. Further, another embodiment of the present invention is 11%. Further, another embodiment of the present invention is 14%. Further, the present invention is other The embodiment is 20%. Further, another embodiment of the present invention is 30%. Further, another embodiment of the present invention is 40%. Further, another embodiment of the present invention is 50%. Further, another embodiment of the present invention 55%. In addition, this hair Other embodiments of Ming are 60%. Further, other embodiments of the present invention are 65%. Further, other embodiments of the present invention are 70%. Further, other embodiments of the present invention are 75%. Further, other embodiments of the present invention are 80%.

Further, the upper limit of the preferable content is, for example, 95% in one embodiment of the present invention with respect to the total amount of the liquid crystal composition of the present invention. Further, another embodiment of the present invention is 85%. Further, other embodiments of the present invention are 75%. Further, other embodiments of the present invention are 65%. Further, another embodiment of the present invention is 55%. Further, other embodiments of the present invention are 45%. Further, another embodiment of the present invention is 35%. Further, other embodiments of the present invention are 30%. Further, other embodiments of the present invention are 28%. Further, other embodiments of the present invention are 27%. Further, other embodiments of the present invention are 25%.

When the compound represented by the formula (XIII") is contained, it is preferably 0 to 30% by mass, more preferably 0 to 25% by mass, based on the total mass of the liquid crystal composition of the present invention.

In the formula (XIII"), R ^X1 and R ^X2 each independently represent an alkyl group having 1 to 8 carbon atoms, an alkenyl group having 2 to 8 carbon atoms, an alkoxy group having 1 to 8 carbon atoms or a carbon number. The alkenyloxy group having 2 to 8 is preferably an alkyl group having 1 to 8 carbon atoms or an alkenyl group having 2 to 8 carbon atoms, more preferably an alkyl group having 1 to 8 carbon atoms. The alkyl group having 2 to 5 carbon atoms is particularly preferred, and the alkyl group having 3 to 5 carbon atoms is most preferred. In this case, the number of carbon atoms of R ^X1 and R ^X2 is preferably different from each other. The above alkyl group, alkenyl group, alkoxy group and alkenyloxy straight chain are preferred.

More specifically, in the case of the compound represented by the formula (XIII"), a compound wherein R ^X1 represents a propyl group and R ^X2 represents an ethyl group, or a compound wherein R ^X1 represents a butyl group and R ^X2 represents an ethyl group is preferred. .

In the general formula (XIII"), X ³¹ to X ³⁶ each independently represent a hydrogen atom or a fluorine atom, and 2 to 5 of X ³¹ to X ³⁶ represent a fluorine atom more preferably, and 2 of X ³¹ to X ³⁶ ~4 indicates that the fluorine atom is more preferable, and 2 to 3 of X ³¹ to X ³⁶ indicate that the fluorine atom is particularly preferable, and two of X ³¹ to X ³⁶ indicate that the fluorine atom is the best.

In this case, in the case where two fluorine atoms are present, two of X ³³ to X ³⁶ represent a fluorine atom, and a combination of X ³³ and X ³⁴ represents a fluorine atom, or a combination of X ³⁵ and X ³⁶ represents A fluorine atom is preferred, and a combination of X ³³ and X ³⁴ preferably represents a fluorine atom. In the case where the fluorine atom is three or more, at least the combination of X ³³ and X ³⁴ represents a fluorine atom, or at least a combination of X ³⁵ and X ³⁶ represents a fluorine atom, and at least a combination of X ³³ and X ³⁴ represents a fluorine atom. For better.

In the formula (XIII"), M ^X31 represents 1,4-cyclohexylene, 1,4-phenylene or tetrahydropyran-2,5-diyl. Preferably, the formula (XIII) is used. In the liquid crystal display device and the liquid crystal display produced by the liquid crystal composition of the compound represented by the above, M ^X31 represents 1,4-phenylene or tetrahydropyran-2,5-diyl when the reaction rate is emphasized. Preferably, 1,4-phenylene is more preferred. In the case of the liquid crystal display device and the liquid crystal display, when the driving voltage is emphasized, M ^X31 represents 1,4-phenylene or tetrahydropyran-2,5-diyl, preferably tetrahydropyran-2. 5-diyl is more preferred. In the liquid crystal display device and the liquid crystal display, the operating temperature range is emphasized, that is, the high operating temperature range is necessary (in the case of increasing Tni), and in the liquid crystal display element and the liquid crystal display, M ^X31 represents 1,4-extension ring. A hexyl or tetrahydropyran-2,5-diyl group is preferred, and a 1,4-cyclohexylene group is more preferred. M ^X31 represents a case where 1,4-phenylene is present, and one or more hydrogen atoms in the benzene ring may be substituted with a fluorine atom, but it is preferred that 0 to 2 hydrogen atoms are substituted with a fluorine atom. In the case where the two hydrogen atoms of the above-mentioned phenylene group are substituted with a fluorine atom, M ^X31 represents a 2,3-difluorobenzene-1,4-diyl group.

In the general formula (XIII"), W represents 0 or 1. In the case of the liquid crystal display device and the liquid crystal display, the reaction speed is emphasized, and W is preferably 0. In the liquid crystal display device and the liquid crystal display, attention is paid to the operation. In the case of the temperature range, that is, the high operating temperature range is necessary (in the case of increasing Tni), the W system indicates that 1 is preferable.

The compound represented by the formula (XIII") is preferably a compound represented by the following formula (XIII"-1) to (XIII"-23). In each formula, R ^X1 represents a formula (X") same meanings as in R ^X1, R ^X2 represent the same meaning as R ^X2 in the general formula (X ") in.

Among the compounds represented by the formula (XIII"-1) to (XIII"-23), the formula (XIII"-1) to (XIII"-10), (XIII"-12), (XIII"-20) And a compound represented by (XIII"-22) is preferred, and the formula (XIII"-1), (XIII"-2), (XIII"-10), (XIII"-12), (XIII"-20 And the compound represented by (XIII)-22) is more preferable, and the compound represented by the formula (XIII"-1) and (XIII"-2) is more preferably represented by the formula (XIII"-1) The compound is particularly good.

The compound represented by the formula (XIII"-1), specifically, the compound represented by the formula (XIII"-1-1) to the formula (XIII"-1-16) is preferred.

Among the compounds represented by the formula (XIII"-1-1) to the formula (XIII"-1-16), the compound represented by the formula (XIII"-1-1) to the formula (XIII"-1-6) is Preferably, the compound represented by the formula (XIII"-1-1), the formula (XIII"-1-2) and the formula (XIII"-1-4) is more preferably, the formula (XIII"-1-2) and the formula The compound represented by (XIII "1-4) is more preferable.

In the liquid crystal composition of the present invention, the content of the compound represented by the formula (XIII"-1-2) is considered in view of the low-temperature solubility, the transfer temperature, the electrical reliability, etc., with respect to the total mass of the liquid crystal composition of the present invention. It is 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 1% by mass or more and 10% by mass or less, and particularly preferably 2% by mass or more and 8% by mass or less.

In the case where the dielectric anisotropy Δ ε of the liquid crystal composition of the present invention is negative, the value of Δ ε is 25 ° C, preferably -2.0 to -6.0, more preferably -2.5 to -5.0, -2.5. To -4.0 is especially good. More specifically, when the reaction speed is emphasized, the range of -2.5 to -3.4 is preferred, and the driving voltage is emphasized. The -3.4 to -4.0 is preferred.

The refractive index of the liquid crystal composition of the present invention has a value of ΔN of 295 K, preferably 0.08 to 0.13, more preferably 0.08 to 0.105. More specifically, in the case of a thin liquid crystal cell gap, 0.10 to 0.12 is preferable, and in the case of a thick liquid crystal cell gap, 0.08 to 0.10 is preferable.

The liquid crystal composition of the present invention has a rotational viscosity (?1) (unit: mPa‧s) of 295 K, preferably 150 or less, more preferably 130 or less, and particularly preferably 120 or less.

The compound used in the present invention is used for the liquid crystal composition In the case of chemical stability, it is preferred that the molecule does not have a chlorine atom. Further, the compound having a chlorine atom in the liquid crystal composition is preferably 5% or less, preferably 3% or less, more preferably 1% or less, more preferably 0.5% or less, and most preferably not contained. The term "substantially not contained" means that the liquid crystal composition contains only a compound which is not intended to contain a chlorine atom, such as a compound formed as an impurity in the production of a compound.

The compounds used in the present invention do 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 cyano group or 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. Compounds having a ring structure of only 6 members in the molecule are also preferred.

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

When the reliability and long-term stability of the liquid crystal composition are emphasized, the content of the compound having a carbonyl group is preferably 5% by mass or less, more preferably 3% by mass or less, and more preferably 1% by mass or less based on the total mass of the composition. It is better, and it is not optimal for it.

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. The following is better and is not included as optimal.

It is preferable to make a compound having a ring structure of all 6 members in the molecule, and a compound having a ring structure of 6 rings in the molecule is preferable. The content is preferably 80% by mass or more, more preferably 90% by mass or more, and more preferably 95% by mass or more, based on the total mass of the above-mentioned composition, and more preferably 95% by mass or more. The liquid crystal composition of the 6-membered ring compound is optimal.

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

When the improvement of the viscosity and the improvement of the Tni are emphasized, it is preferable that the content of the compound having a hydrogen atom which can be substituted with a halogen of 2-methylbenzene-1,4-diyl is preferable, and the above 2 is contained in the molecule. The content of the -methylbenzene-1,4-diyl compound 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 more 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. In the case where the above alkenyl group is bonded to benzene, the number of carbon atoms of the alkenyl group is preferably 4 to 5, and the unsaturated bond of the alkenyl group is not directly bonded to benzene.

In 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. The polymerizable compound which can be used is, for example, a photopolymerizable monomer which is polymerized by an energy ray such as light, and the structure is, for example, a biphenyl derivative or a triphenyl derivative. A polymerizable compound having a liquid crystal skeleton in which a six-membered ring is a plurality of members, 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 from 2 to 7, the oxygen atom is bonded to the aromatic ring), and Z ²⁰¹ represents -OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, -CF ₂ O-, - OCF ₂ -, -CH ₂ CH ₂ -, -CF ₂ CF ₂ -, -CH=CH-COO-, -CH=CH-OCO-, -COO-CH=CH-, -OCO-CH=CH-, -COO-CH ₂ CH ₂ -, -OCO-CH ₂ CH ₂ -, -CH ₂ CH ₂ -COO-, -CH ₂ CH ₂ -OCO-, -COO-CH ₂ -, -OCO-CH ₂ -, -CH ₂ -COO-, -CH ₂ -OCO-, -CY ¹ =CY ² - (wherein Y ¹ and Y ² each independently represent a fluorine atom or a hydrogen atom), -C≡C- or a single bond, M ²⁰¹ represents a 1,4-phenylene group, a trans-1,4-cyclohexylene group or a single bond, and all of the 1,4-phenylene groups in the formula may be substituted by a fluorine atom.

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

Sp ²⁰¹ and Sp ²⁰² are each independently represented by 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. The compound which represents a single bond or one which is a single bond and the other is an alkylene group having 1 to 8 carbon atoms or -O-(CH ₂ ) _s - is preferred. In this case, an alkyl group having 1 to 4 carbon atoms is preferred, and an s system of 1 to 4 is preferred.

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

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

From this point of view, the ring structure between the general formula (XX), Sp ²⁰¹ and Sp ²⁰² is specifically a 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-1) is represented by the formula (XXa-1). ) to the formula (XXa-3) is more preferable, and the expression (XXa-1) is particularly preferable.

(wherein both ends are bonded to Sp ²⁰¹ or Sp ²⁰² ).

The polymerizable compound containing these skeletons 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 can be obtained.

From the above, in terms of the polymerizable monomer, the formula (XX-1) to the formula (XX-4) are particularly preferable, and the formula (XX-2) is the most preferable.

(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 in the case where the polymerization initiator is not present, but may contain a polymerization initiator 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.

<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. . As for the liquid crystal display element, it can be used for ECB-LCD, VA-LCD, FFS-LCD, AM-LCD (active matrix liquid crystal display element), TN (nematic liquid crystal display element), STN-LCD (twisted nematic) A liquid crystal display element), an OCB-LCD, and an IPS-LCD (planar conversion liquid crystal display element), but particularly used in an AM-LCD, can be used for a transmissive or reflective liquid crystal display element.

For the two substrates of the liquid crystal cell used for the liquid crystal display element, glass or a soft and transparent material such as plastic may be used, or one of them may be an opaque material such as tantalum. The transparent substrate having a transparent electrode layer can be obtained, for example, by sputtering indium tin oxide (ITO) on a transparent substrate such as a glass plate.

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

The substrate is oriented such that the transparent electrode layer is inside. At this time, the interval between the substrates can also be adjusted by the spacer. At this time, it is preferable to adjust the thickness of the obtained light control layer to 1 to 100 μm. 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. Further, in the case of two polarizing plates, the polarizing axes of the respective polarizing plates can be adjusted to adjust the viewing angle or contrast to be good. Further, a phase difference film for increasing the viewing angle can also be used. The spacer may, for example, be a columnar spacer including glass particles, plastic particles, alumina particles, a photoresist material, or the like. Thereafter, a sealant such as an epoxy thermosetting composition is screen-printed on the substrate in a shape in which a liquid crystal injection port is provided, and the substrates are bonded to each other to heat and cure the sealant.

A method of sandwiching a liquid crystal composition containing a polymerizable compound between two substrates can be carried out by a usual vacuum injection method or ODF method. However, although the vacuum injection method does not cause a dripping mark, there is a problem that the injected trace remains, but in the present invention, it can be preferably used for a display element manufactured by the ODF method. In the manufacturing process of the liquid crystal display element of the ODF method, in the substrate of either the backplane or the frontplane, the epoxy-based photothermal heat is used together with a sealant such as curability, and a dispenser is used to close the circuit. Retaining the earth, which is dripped under degassing After the liquid crystal composition is quantified, 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 the two substrates, at least the substrate on the irradiation surface side is required to have appropriate transparency to the active energy ray. Further, when a specific portion is polymerized by using a mask after light irradiation, the alignment state of the unpolymerized portion is changed by changing conditions such as an electric field, a magnetic field, or a temperature, and further, polymerization can be performed by using an irradiation active energy ray. s method. In particular, in the case of ultraviolet light exposure, it is preferred to perform ultraviolet exposure while applying an alternating electric field to the liquid crystal composition containing the polymerizable compound. The applied alternating electric field is preferably an alternating current having a frequency of 10 Hz to 10 kHz, and a frequency of 60 Hz to 10 kHz is more preferable, and the voltage is selected in accordance with a desired pre-tilt angle of the liquid crystal display element. That is, the pretilt angle of the liquid crystal display element can be controlled by the applied voltage. In the liquid crystal display element of the transverse electric field type MVA mode, it is preferable to control the pretilt angle to 80 to 89.9 degrees from the viewpoint of alignment stability and contrast.

The temperature at the time of irradiation is preferably in a temperature range in which the liquid crystal state of the liquid crystal composition of the present invention is maintained. The polymerizer is preferred at a temperature close to room temperature, i.e., typically at a temperature of from 15 to 35 °C. As the lamp for causing ultraviolet rays, a metal halide lamp, a high pressure mercury lamp, an ultrahigh pressure mercury lamp, or the like can be used. Further, in terms of the wavelength of the ultraviolet ray to be irradiated, it is preferred to irradiate the ultraviolet ray in the wavelength region of the absorption wavelength region of the non-liquid crystal composition, and it is preferable to use the ultraviolet ray to remove the ultraviolet ray. The intensity of the ultraviolet ray to be irradiated is preferably 0.1 mW/cm ² to 100 W/cm ^{2 , more} preferably 2 mW/cm ² to 50 W/cm ² . The energy of the ultraviolet ray to be irradiated can be appropriately adjusted, but it is preferably 10 mJ/cm ² to 500 J/cm ^{2 , more} preferably 100 mJ/cm ² to 200 J/cm ² . When the ultraviolet rays are irradiated, the intensity can be changed. The time for irradiating the ultraviolet rays is appropriately selected depending on the intensity of the ultraviolet rays to be irradiated, but 10 seconds to 3,600 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, VA-IPS mode or ECB mode liquid crystal display element.

Hereinafter, preferred embodiments of the liquid crystal display device (liquid crystal display) of the present invention will be described in detail.

In the example of the liquid crystal display element, a liquid crystal display element having 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 can be exemplified.

Specifically, a liquid crystal display element is provided in which a TFT layer and a pixel electrode are provided on a first substrate, and a passivation film and a first alignment film are provided thereon. a black matrix, a color filter, and a flattening film (coating) are provided on the second substrate. An overcoat layer and a transparent electrode, wherein a second alignment film is provided thereon, a front plate facing the back plate, a sealing material disposed between the substrates, and a seal surrounded by the sealing material In the liquid crystal layer of the region, protrusions (columnar spacers) are provided on the substrate surface adjacent to the sealing material.

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. Polyesters such as ethylene glycol; polyolefins such as polypropylene, polyethylene, polycarbonate, polyvinyl alcohol, polyvinyl chloride, polyvinylidene chloride, polyamide, polyimine, polyimine Indoleamine, polystyrene, polyacrylate, polymethyl methacrylate, polyether oxime, polyarylate compound, inorganic-organic composite materials such as glass fiber-epoxy resin, glass fiber-acrylic resin, etc. .

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 first material or the second substrate may be the same material or a different material, 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. In addition, if it is a plastic substrate, it is suitable for a roll-to-roll process and is suitable for weight reduction or It is preferred to be flexible. 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 or the second substrate is used.

The back plate is provided with a TFT layer and a pixel electrode on the first substrate. These are manufactured in the usual array steps. A passivation film and a first alignment film are provided thereon to obtain a back sheet.

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

Further, the first alignment film has 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. In the case of organic materials in the photo-alignment method, There are materials containing dichroic dyes. 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.

In the former substrate, a black matrix, a color filter, a planarization film, a transparent electrode, and a second alignment film are provided on the second substrate.

The black matrix is produced, for example, by a pigment dispersion method. Specifically, a coloring layer is formed by applying a color resin liquid in which a black matrix forming black coloring agent is uniformly dispersed on a second substrate provided with a barrier film. 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.

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.

The color filter 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 to the second base. After the bake is hardened on the plate, the photoresist is coated on the plate and pre-baked. After the photoresist is exposed through the mask pattern, development is performed to form a pattern. The photoresist layer is then stripped and baked again to complete the (red) color filter. The order of coloring is not particularly limited. Similarly, a green filter and a blue filter are formed.

The transparent electrode is provided on the color filter (if necessary, a flat layer is provided on the color filter for the surface to be flattened). The transparent electrode is preferably one having a high light transmittance, and the small one is preferably a small one. The transparent electrode is formed into an oxide film of ITO or the like by a sputtering method.

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

The second alignment film system is the same as the first alignment film 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 disposed on the first substrate by a gravure printing method or a solution droplet discharge method. The surface on which the sealing material on the plate abuts. 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. An example of an exposure processing procedure using a columnar spacer formed on a black matrix as a mask pattern will be described.

A resin liquid for forming a columnar spacer (excluding a colorant) is applied to the transparent electrode of the front plate. Next, the resin layer is baked and hardened. The photoresist is coated thereon and pre-baked. After the photoresist is exposed through the mask pattern, 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.

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.

So, set on the surface of the front panel that becomes the sealing area. After the columnar spacers, a sealing material is applied to the surface adjacent to the sealing material of the backing plate.

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 particularly limited and may be spherical, fibrous, amorphous or the like. Further, in order to favorably control the cell gap, a spherical or fibrous spacer having a monodisperse diameter may be mixed, and in order to further strengthen the adhesion to the substrate, a fibrous substance which is easily entangled with the protrusion on the substrate may be mixed. The diameter of the fibrous material used at this time is about 1/5 to 1/10 of the cell gap, and it is desirable that the length of the fibrous material is shorter than the seal coating width.

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

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

The liquid crystal is dropped into the closed circuit shape (sealing region) of the front plate to which the sealing material is applied. A dispenser is usually used. The amount of liquid crystal dropped is the height and seal of the column spacer in order to match the volume of the liquid crystal cell. The volume of the product of the coated areas is the same amount as the basic. 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. The position is placed at a position (distance) where the sealing material is not adjacent to the other substrate. In this state, the system is depressurized. After the decompression is completed, the positions of the two substrates are adjusted while adjusting the bonding position between the front plate and the back plate (calibration operation). At the end of the adjustment of the bonding position, the substrate is brought close to the position where the sealing material on the front plate abuts the backing plate. In this state, the inert gas is filled in the system, and the pressure is gradually released while returning to the normal pressure. At this time, the front plate and the back plate are bonded together by the atmospheric pressure, and the cell gap is formed at the height position of the column spacer. In this state, the sealing material is irradiated with ultraviolet rays and the sealing material is cured to form a liquid crystal cell. Thereafter, the heating step is added as appropriate and the sealing material is allowed to harden. In order to enhance the adhesion of the sealing material or to improve the reliability of the electrical characteristics, a heating step is often added.

[Examples]

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

In the examples, the measured characteristics are as follows.

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

Δn: refractive index anisotropy in 295K (alias: birefringence)

△ ε: dielectric anisotropy in 295K

η: viscosity in 295K (mPa‧s)

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

<Image review>

The image sticking evaluation of the liquid crystal display element was performed after the display of the designated fixed pattern 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.

<Evaluation of Volatile (Contamination of Manufacturing Equipment)>

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.

<Evaluation of process suitability>

The process suitability is based on the ODF process. Using a fixed metering pump, add 40pL of liquid crystal per drop and perform 100,000 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)

<Solubility evaluation in low temperature>

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) →降 The temperature change of the temperature (-0.2 ° C / min) - -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.

[Examples 1 to 2 and Comparative Examples 1 to 2]

The liquid crystal composition of the compound represented by the chemical formula shown below was prepared, and the physical property was measured. The results are shown in Table 1.

The numerical values of the respective formulas of Table 1 indicate the ratio (unit: mass%) of each compound contained in each composition.

The evaluation of the initial VHR of the liquid crystal compositions of Examples 1 to 2 and Comparative Examples 1 and 2, the VHR after heating (150 ° C, 1 hour), the evaluation of the afterimage, and the evaluation of the process suitability are shown in Table 2.

In Example 1, 100 parts by weight of the liquid crystal composition of Comparative Example 1 had a composition in which 0.3 parts by weight of the compound represented by the formula (i-c-2) was added. Addition of the compound represented by the formula (i-c-2) to Tni, Δn, Δε And the physical properties of η have no effect. That is, the physical properties of Example 1 were the same as those of Comparative Example 1.

The liquid crystal composition of Example 1 was excellent in image sticking evaluation and process suitability.

In Example 2, with respect to 100 parts by weight of the liquid crystal composition of Comparative Example 2, a composition having 0.3 parts by weight of a compound represented by the formula (i-c-2) was added. The addition of the compound represented by the formula (i-c-2) has no effect on the physical properties of Tni, Δn, Δε and η. That is, the physical properties of Example 2 were the same as those of Comparative Example 2.

The liquid crystal composition of Example 2 was excellent in image sticking evaluation and process suitability.

In the liquid crystal composition of the present invention, it is considered that the compound represented by the formula (44.1) and the formula (44.2) is oxidized and has a cyclic ether structure (perylene structure) in which peracid is easily formed. ). In other words, it is considered that the solubility of the liquid crystal composition is improved by the compound represented by the formula (ii) having a melan structure, and the viscosity is lowered, so that the process suitability is improved and the oxidation of the melan structure is generalized. (i) inhibition of the compounds indicated. Therefore, the above effects are particularly remarkable effects exhibited by the combination of the compound represented by the general formula (i) and the compound represented by the general formula (ii).

[Example 3, Comparative Example 3]

The composition of the compound represented by the chemical formula shown below was prepared, and the physical property was measured. The results are shown in Table 3.

The numerical values of the respective formulas of Table 3 indicate the ratio (unit: mass%) of each compound contained in each composition.

The evaluation of the VHR of the liquid crystal composition of Example 3 and Comparative Example 3, the VHR after heating (150 ° C, 1 hour), the evaluation of the afterimage, and the evaluation of the process suitability are shown in Table 4.

In Example 3, the composition of the compound represented by the formula (i-c-2) was added in an amount of 0.3 part by weight based on 100 parts by weight of the liquid crystal composition of Comparative Example 3. The addition of the compound represented by the formula (i-c-2) has no effect on the physical properties of Tni, Δn, Δε and η. That is, the physical properties of Example 3 were the same as those of Comparative Example 3.

The liquid crystal composition of Example 3 was excellent in image sticking evaluation and process suitability.

In the liquid crystal composition of the present invention, the compound represented by the formula (ii-c-3), the formula (ii-c-5) and the formula (ii-c-7) is generally considered to have a cause for the above effects. A cyclic ether structure (perme structure) which is oxidized to easily generate peracid. That is, it is considered that the solubility of the liquid crystal composition is improved by the compound represented by the formula (ii) having a melan structure, and the viscosity is lowered to improve the process suitability, and the oxidation of the melan structure is expressed by the formula (i). The compound represented by the inhibition. Therefore, the above effects are particularly remarkable effects by combining the compound represented by the general formula (i) with the compound represented by the general formula (ii).

[Example 1 and Comparative Examples 4 to 6]

The composition of the compound represented by the chemical formula shown below was prepared, and the physical property was measured. The results are shown in Table 5. Example 1 of Table 5 is the same as Example 1 of Table 1.

The numerical values of the respective formulas of Table 5 indicate the ratio (unit: mass%) of each compound contained in each composition. In Table 5, the physical property values of Tni, Δn, Δε, and η of Example 1 were substituted for the respective physical property values of Comparative Example 1 of Table 1.

The evaluation of the VHR of the liquid crystal composition of Example 1 and Comparative Examples 4 to 6, the VHR after heating (150 ° C, 1 hour), the evaluation of the afterimage, and the evaluation of the process suitability are shown in Table 6.

Comparative Example 4 was obtained by removing the liquid crystal composition of Example 1. a compound represented by the formula (i) (a compound represented by the formula (ic-2)) and a compound represented by the formula (ii) (a compound represented by the formula (44.1) and the formula (44.2)), A liquid crystal composition containing a large amount of the compound represented by the formula (45.2).

When the physical property values of Example 1 and Comparative Example 4 were compared, the Tni of Comparative Example 4 was drastically lowered, and the viscosity η was increased. Thus, the aspect of Embodiment 1 is that the temperature of Tni is high and it is possible to use it in a wide temperature range. Further, in the aspect of the first embodiment, the viscosity is low, and a case where the liquid crystal display element is used can obtain a fast reaction speed. Further, the liquid crystal composition of Example 1 was evaluated as excellent in residual image. The reason why the liquid crystal composition of Example 1 is excellent in the above evaluation is as described above.

In Comparative Example 5, the compound represented by the formula (i) (the compound represented by the formula (ic-2)) and the compound represented by the formula (ii) contained in the liquid crystal composition of Example 1 were removed. 44.1) A liquid crystal composition of the compound represented by the formula (37.2) and the formula (41.2) is added together with the compound represented by the formula (44.2).

When the physical property values of Example 1 and Comparative Example 5 were compared, the Δε of Comparative Example 5 was greatly lowered. Thus, the aspect of Embodiment 1 can be used at a low driving voltage in the case of a liquid crystal display element. Further, the liquid crystal composition of Example 1 was evaluated as excellent in residual image. The reason why the liquid crystal composition of Example 1 is excellent in the above evaluation is as described above.

In Comparative Example 6, the compound represented by the formula (i) (the compound represented by the formula (ic-2)) and the compound represented by the formula (ii) contained in the liquid crystal composition of Example 1 were removed. 44.1) and a compound represented by the formula (44.2), and containing a plurality of compounds represented by the formula (26.2) and the formula (45.2) Liquid crystal composition. The Δn and the viscosity η of the liquid crystal compositions of Comparative Example 6 and Example 1 were made equal.

When the physical property values of Example 1 and Comparative Example 6 were compared, the Tni of Comparative Example 6 was drastically lowered. Thus, in the aspect of Embodiment 1, the temperature of Tni is high and can be used in a wide temperature range. Further, the liquid crystal composition of Example 1 was evaluated as excellent in residual image. The reason why the liquid crystal composition of Example 1 is excellent in the above evaluation is as described above.

[Example 4]

The composition of the compound represented by the chemical formula shown below was prepared, and the physical property was measured. The results are shown in Table 7.

The numerical values of the respective formulas of Table 7 indicate the ratio (unit: mass%) of each compound contained in each composition. In the example 4, the composition of the compound represented by the formula (i-c-2) is added in an amount of 0.3 part by weight based on 100 parts by weight of the liquid crystal composition containing the compound represented by the formula (26.2) to the formula (28.3).

The evaluation of the initial VHR of the liquid crystal composition of Example 4, the VHR after heating (150 ° C, 1 hour), the evaluation of the afterimage, and the evaluation of the process suitability are shown in Table 8.

[Example 5]

The composition of the compound represented by the chemical formula shown below was prepared, and the physical property was measured. The results are shown in Table 9.

The numerical values of the respective formulas of Table 9 indicate the ratio (unit: mass%) of each compound contained in each composition. In Example 5, the composition of the compound represented by the formula (i-c-2) was added in an amount of 0.3 part by weight based on 100 parts by weight of the liquid crystal composition containing the compound represented by the formula (1.3) to the formula (19.4).

The evaluation of the initial VHR of the liquid crystal composition of Example 5, the VHR after heating (150 ° C, 1 time), the evaluation of the afterimage, and the evaluation of the process suitability are shown in Table 10.

[Embodiment 6]

The composition of the compound represented by the chemical formula shown below was prepared, and the physical property was measured. The results are shown in Table 11.

The numerical values of the respective formulas of Table 11 indicate the ratio (unit: mass%) of each compound contained in each composition. In Example 6, 100 parts by weight of the liquid crystal composition containing the compound represented by the formula (26.2) to the formula (20.2) had a composition in which 0.3 part by weight of the compound represented by the formula (i-c-2) was added.

The evaluation of the initial VHR of the liquid crystal composition of Example 6, the VHR after heating (150 ° C, 1 hour), the evaluation of the afterimage, and the evaluation of the process suitability are shown in Table 12.

[Embodiment 7]

The composition of the compound represented by the chemical formula shown below was prepared, and the physical property was measured. The results are shown in Table 13.

The numerical values of the respective formulas of Table 13 indicate the ratio (unit: mass%) of each compound contained in each composition. In the present invention, the composition of the compound represented by the formula (i-c-2) is added in an amount of 0.3 part by weight based on 100 parts by weight of the liquid crystal composition of the compound represented by the formula (26.2) to the formula (26.1).

The evaluation of the initial VHR of the liquid crystal composition of Example 7 and the VHR after heating (150 ° C, 1 hour), the evaluation of the afterimage, and the evaluation of the process suitability are shown in Table 14.

[Example 8 and Comparative Example 7]

The composition of the compound represented by the chemical formula shown below was prepared, and the physical property was measured. The results are shown in Table 15.

The numerical values of the respective formulas of Table 15 indicate the ratio (unit: mass%) of each compound contained in each composition.

The evaluation of the initial VHR of the liquid crystal compositions of Example 8 and Comparative Example 7, VHR after heating (150 ° C, 1 hour), evaluation of residual image, and evaluation of process suitability are shown in Table 16.

In Example 8, 100 parts by weight of the liquid crystal composition of Comparative Example 7 had a composition in which 0.3 parts by weight of the compound represented by the formula (i-c-2) was added. The addition of the compound represented by the formula (i-c-2) has no influence on the physical properties of Tni, Δn, Δε and η. That is, the physical properties of Example 8 were the same as those of Comparative Example 7.

The liquid crystal composition of Example 8 was excellent in both the initial VHR and the heated VHR.

The components, the combinations thereof, and the like in the respective embodiments described above are examples, and the addition, omission, substitution, and other changes of the components are possible without departing from the scope of the invention. Further, the present invention is not limited by the embodiments, but is limited only by the scope of the claims (the scope of the patent application).

[Industrial availability]

The liquid crystal composition of the present invention can be widely applied to the fields of liquid crystal display elements and liquid crystal displays.

Claims (7)

A liquid crystal composition containing any one or two or more of the compounds represented by the following formula (i) and one or two of the compounds represented by the following formula (ii) The above liquid crystal composition: (wherein R ⁱ¹ represents an alkyl group having 1 to 8 carbon atoms, and A ⁱ¹ represents a 1,4-cyclohexylene group (1 -CH ₂ - present in the group or 2 or more -CH not adjacent) ₂ - may be substituted with -O-), 1,4-phenylene (one or more hydrogen atoms present in the group may be substituted with a fluorine atom) or a single bond, and R ⁱⁱ¹ represents a carbon number 1 to 8 alkyl groups, one of the alkyl groups or two or more non-adjacent -CH ₂ - may be independently -CH=CH-, -C≡C-, -O-, -CO- , -COO- or ^-OCO- substituted, R ⁱⁱ² represents a fluorine atom, a chlorine atom, a cyano group or an alkyl group having 1 to 8 carbon atoms, and one of the alkyl groups or two or more non-adjacent -CH ₂ - each independently may be substituted by -CH=CH-, -C≡C-, -O-, -CO-, -COO- or -OCO-, wherein one or more hydrogen atoms of the alkyl group are each Independently substituted by a fluorine atom, A ⁱⁱ¹ and A ⁱⁱ² each independently represent a 1,4-cyclohexylene group (one of the -CH ₂ - or a non-contiguous two or more -CH ₂ - present in the group may be substituted Is -O-), 1,4-phenylene (one or two or more hydrogen atoms present in the group may be substituted with a fluorine atom), and Z ⁱⁱ¹ and Z ⁱⁱ² 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-, m ⁱⁱ¹ and m ⁱⁱ² each independently represent 0, 1 2, 3, but m ⁱⁱ¹ + m ⁱⁱ² is 1, 2, 3 or 4, where A ⁱⁱ¹ and Z ⁱⁱ¹ are plural, each A ⁱⁱ¹ and each Z ⁱⁱ¹ may be the same or different from each other, A ⁱⁱ² and When Z ⁱⁱ² is plural, each A ⁱⁱ² and each Z ⁱⁱ² may be the same or different from each other; wherein one or more of R ⁱⁱ² in the formula (ii) is a carbon number of 1~ A compound having 8 alkyl groups or an alkoxy group having 1 to 8 carbon atoms. The liquid crystal composition of claim 1, which contains one or more compounds represented by the formula (ii) having at least one 2,3-difluorobenzene-1,4-diyl group. The liquid crystal composition of claim 1, 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 group: (a) 1,4- cyclohexylene (this group present in one of the -CH ₂ - or of two or more 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 ( One of the b) and/or two or more hydrogen atoms may be independently substituted by a cyano group, a fluorine atom or a chlorine atom, and L ^L1 and L ^L2 each independently represent a single bond, -CH ₂ CH ₂ -, -( CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, -OCF ₂ -, -CF ₂ O-, -CH=NN=CH-, -CH=CH-, -CF=CF- or -C≡C-, 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 stored in plural In case of the same, they may be the same or different; except for the compounds represented by the general formula (ii) The liquid crystal composition of claim 1, which contains a compound represented by the following formula (M), (wherein R ^M1 represents an alkyl group having 1 to 8 carbon atoms, and one of the alkyl groups or two or more non-adjacent-CH ₂ - groups are independently capable of being -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 (this group present in one of the -CH ₂ - or of two or more adjacent -CH ₂ - may be substituted with -O- or -S-) and (e 1,4-phenylene (one of -CH= or two or more non-contiguous -CH= may be substituted by -N=), the above-mentioned base (d), base (e One or more or two or more hydrogen atoms 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 case where there are plural numbers, and they 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, X ^M1 and X ^M3 independently represents a hydrogen atom, a chlorine atom or a fluorine atom, X ^M2 represents a hydrogen atom a fluorine atom, a chlorine atom, a cyano group, a trifluoromethyl group, a fluoromethoxy group, a difluoromethoxy group, a trifluoromethoxy group or a 2,2,2-trifluoroethyl group; however, the formula (ii) Except for the compounds indicated). The liquid crystal composition of claim 1, which contains a compound represented by the following formula (X"), (wherein R ^X1 and R ^X2 independently of each other represent an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms or an alkenyl group having 2 to 10 carbon atoms, and 1 present in such a group The methylene group or two or more methylene groups which are not adjacent may be substituted with -O- or -S-, and one or more hydrogen atoms present in the groups may be substituted with a fluorine atom. Or a chlorine atom, u and v independently of each other represent 0, 1 or 2, but u+v is 2 or less, and M ^X1 , M ^X2 and M ^X3 independently of each other represent a group selected from the group consisting of: (a) trans -1,4-cyclohexylene (one methylene group present in this group or two or more methylene groups not adjacent to each other may be substituted with -O- or -S-), (b) 1,4 - a phenyl group (one of which is present in this group - CH = or two or more of which are not adjacent - CH = may be substituted with -N =), and the above-mentioned group (a) or group (b) Each of the hydrogen atoms may be substituted by a cyano group, a fluorine atom, a trifluoromethyl group, a trifluoromethoxy group or a chlorine atom, but M ^X2 and/or M ^{X3 may} be plural or plural, and they may be the same or may be the same. Iso, L ^X1 , L ^X2 and L ^X3 independently of each other represent a single bond, -COO-, -OCO-, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -OCF ₂ -, -CF ₂ O-, -CH=CH- or -C≡C-, L ^X1 and/or L ^X3 are in a plurality of cases, and they may be the same or different, X ^X1 And X ^X2 independently of each other represents a trifluoromethyl group, a trifluoromethoxy group or a fluorine atom, but any of X ^X1 and X ^X2 represents a fluorine atom; however, the compound represented by the formula (ii) and the formula (L) Except for the compounds indicated). A liquid crystal display element using the liquid crystal composition of claim 1. 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 uses the liquid crystal composition of claim 1.