KR20200096502A - Liquid crystal display element - Google Patents

Abstract

로 표시되는 화합물을 함유하고, 추가로 일반식 (N-1d)

및 (N-1)

로 표시되는 화합물군으로부터 선택되는 1종 또는 2종 이상의 화합물을 함유하는 액정 조성물을 제공한다. 특히 유전율 이방성이 음인 n형 화합물을 함유하는 n형 액정 조성물로서 유용하다. 아울러 이들을 사용한 액정 표시 소자를 제공한다.The problem to be solved by the present invention is to provide a liquid crystal composition having improved response speed and contrast ratio while satisfying various characteristics required for a liquid crystal composition, and to provide a liquid crystal display device using the same. General formula (i)

It contains the compound represented by, and further general formula (N-1d)

And (N-1)

A liquid crystal composition containing one or two or more compounds selected from the group of compounds represented by is provided. It is particularly useful as an n-type liquid crystal composition containing an n-type compound having negative dielectric anisotropy. In addition, it provides a liquid crystal display device using these.

Description

Liquid crystal display element

The present invention relates to a liquid crystal composition and a liquid crystal display device using the same.

Liquid crystal display elements are used in various household electrical equipment, industrial measuring equipment, automobile panels, mobile phones, smartphones, notebook PCs, tablet PCs, televisions, including watches and calculators. Typical liquid crystal display systems are TN (twisted nematic) type, STN (super twisted nematic) type, GH (guest host) type, IPS (in-plane switching) type, FFS (fringe field switching) type, OCB ( Optical compensation birefringence) type, ECB (voltage controlled birefringence) type, VA (vertical orientation) type, CSH (color super homeotropic) type, FLC (ferroelectric liquid crystal), and the like. Further, as the driving method, there may be mentioned static driving, multiplex driving, simple matrix method, and active matrix (AM) method driven by TFT (thin film transistor) or TFD (thin film diode). In these display systems, IPS-type, FFS-type, ECB-type, VA-type, CSH-type, etc. exhibit advantageous properties when a liquid crystal composition (n-type liquid crystal composition) having a negative dielectric anisotropy (Δε) is used. Is known.

The mainstream display method using n-type liquid crystal composition is VA type, but vertical alignment typified by PSA (Polymer Sustained Alignment) type or PSVA (Polymer Stabilized Vertical Alignment) type in which alignment is controlled by polymerizing additionally polymerizable compounds in a liquid crystal phase. There is a method and a horizontal orientation method represented by IPS type or FFS type. The vertical orientation method is characterized by a wide viewing angle, high transmittance, high contrast, and fast response speed, and is mainly used for large display devices such as TVs and monitors. On the other hand, the horizontal alignment method is adopted in mobile devices such as smartphones and tablet PCs from the viewpoint of wide viewing angle, high transmittance, low power consumption, and optimality with a touch panel, and furthermore, it is adopted for liquid crystal TVs. Also in progress.

As a liquid crystal composition in which Δε is negative, a liquid crystal composition using liquid crystal compounds (A) and (B) (see Patent Document 1) having the following 2,3-difluorophenylene skeletons is disclosed.

Although this liquid crystal composition uses liquid crystal compounds (C) and (D) as liquid crystal compounds having Δε of almost 0, it has not been able to achieve sufficiently low viscosity in liquid crystal compositions requiring high-speed response such as liquid crystal TVs. .

On the other hand, a liquid crystal composition using a liquid crystal compound (E) has already been disclosed, but a liquid crystal composition having a small refractive index anisotropy (Δn) in combination with the liquid crystal compound (D) (see Patent Document 2) The liquid crystal composition to which the compound (F) was added (refer to patent document 3) is introduced.

Moreover, although a liquid crystal composition using the liquid crystal compound (G) and the liquid crystal compound (F) has already been disclosed (refer to Patent Document 4), an additional fast response speed has been required.

In addition, a liquid crystal compound (I) having a large Δn and a large elastic constant (K ₃₃ ) of bending

A liquid crystal composition (refer to Patent Document 5) incorporating is disclosed, but additional fast response speed and high voltage retention (VHR) are required.

From the above, any liquid crystal composition is required to achieve a higher level of both a fast response speed and a high VHR required for a liquid crystal display device.

In Patent Document 6, it is disclosed to improve the response speed of a homeotropic liquid crystal cell by using a liquid crystal material having a large index represented by (Formula 1). However, the disclosed liquid crystal material did not exhibit sufficient performance.

(In the formula, K ₃₃ represents an elastic constant, Δn represents refractive index anisotropy, and γ1 represents rotational viscosity.)

In addition, in Non-Patent Document 1, it is known that the response speed of a liquid crystal material is expressed by the following equation regardless of the driving method.

Here, τ _off is the response speed when the voltage is applied to the non-voltage state, γ ₁ is the rotational viscosity of the liquid crystal material, d is the thickness of the liquid crystal layer, and k is the elastic constant. Therefore, it can be seen that reduction of γ ₁ and increase of k are generally effective in reducing the response speed.

Next, the front contrast ratio (hereinafter, contrast) in the liquid crystal display device is determined by the effective transmittance of the liquid crystal panel since the luminance in black display is not zero but has a finite value (hereinafter, black luminance). It is defined as a value obtained by dividing the luminance (hereinafter, white luminance) in white display to be obtained by the black luminance. Therefore, the contrast can be increased by making the white luminance as large as possible and/or the black luminance as small as possible. In general, reducing the black luminance makes a big contribution.

It is known that since the liquid crystal material undergoes thermal motion, light scattering occurs and the contrast decreases by increasing the black luminance. The factor that increases the black luminance referred to herein is light leakage in the front direction of the liquid crystal display (a direction perpendicular to the liquid crystal layer). This effect is generally greater in the horizontal orientation mode than in the vertical orientation mode.

In Patent Literature 7 and Non-Patent Literature 2, the following formula has been proposed for light leakage due to the liquid crystal layer, and has been confirmed experimentally.

Here, I in the formula is the intensity of light leakage (transmittance observed when arranged between orthogonal polarizing plates) of the liquid crystal layer, S _lc is a scattering index, Δn is the refractive index anisotropy of the liquid crystal material, n _e is the refractive index of abnormal light, n _o is the ordinary refractive index, d is the thickness of the liquid crystal layer, K is the average elastic constant, and can be expressed as (K ₁₁ +K ₂₂ +K ₃₃ )/3. In addition, K ₁₁ represents the elastic constant of splay, K ₂₂ represents the elastic constant of twist, and K ₃₃ represents the elastic constant of bend. Since these Δn, n _e , n _o and d are almost fixed in panel design, in the liquid crystal composition, while satisfying Δn, n _e , and n _o (Δn×d needs to be a constant value), K is increased. It is required to do so, and by achieving this, the black luminance of the liquid crystal display element can be reduced, and the contrast can be improved.

From the above, in the liquid crystal composition, the nematic phase-isotropic liquid phase transition temperature (T _NI ) is high, the solid phase-nematic phase transition temperature (T _CN ) is low, excellent low-temperature storage stability is essential, and rotational viscosity (γ ₁₎ ) Is sufficiently small, the refractive index anisotropy (Δn) is large, and the elastic constant (k or K) is required to be large, and the liquid crystal display elements in these applications are required to achieve both a fast response speed and a high contrast. .

Japanese Patent Publication No. Hei 8-104869 European Patent Application Publication No. 0474062 Japanese Patent Publication No. 2006-037054 Japanese Patent Publication No. 2001-354967 Japanese Patent Publication No. 2017-52960 Japanese Patent Publication No. 2006-301643 Japanese Patent No. 4824 376

EKISHO Vol. 5 No. 3 p. 253(63) 2001 EKISHO Vol. 13 No. 2 p. 119(35) 2009

A problem to be solved by the present invention is to provide a liquid crystal composition having improved response speed and contrast ratio while satisfying the above characteristics required for a liquid crystal composition, and to provide a liquid crystal display device using the same.

The present inventors have studied various liquid crystal compounds and various chemical substances, and have found that the above problems can be solved by selecting and adjusting their content, thereby completing the present invention.

The liquid crystal composition of the present invention has improved response speed and contrast ratio while satisfying various characteristics required for the liquid crystal composition, and has excellent display characteristics. In particular, excellent properties are exhibited by setting it as a liquid crystal composition having a negative dielectric anisotropy (Δε). The liquid crystal display element of the present invention can provide a liquid crystal display element such as VA type, FFS type, or IPS type. This liquid crystal display element is suitable for a mobile phone, a smart phone, a note PC, a tablet PC, an in-vehicle LCD, a public information display (PID), a TV or a monitor, and the like.

Hereinafter, unless otherwise specified,% means mass%.

The composition of the present invention contains a compound represented by formula (i), and further comprises one or two or more compounds selected from the group of compounds represented by the general formula (N-1d) and the general formula (N-1). Contains.

(In the formula, R ^Nd11 and R ^Nd12 each independently represent an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent -CH ₂ ^-s in the alkyl group are each independently -CH=CH-, -C≡C-, -O-, -CO-, -COO- or -OCO- may be substituted,

n ^Nd11 represents 1, 2 or 3.)

(In the formula, R ^N11 and R ^N12 each independently represent an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent -CH ₂ -s in the alkyl group are each independently -CH=CH-, -C≡C-, -O-, -CO-, -COO- or -OCO- may be substituted,

n ^N11 and n ^N12 each independently represent 0, 1, 2 or 3, n ^N11 + n ^N12 represents 1, 2 or 3,

A ^N11 and A ^N12 are each independently,

(a) 1,4-cyclohexylene group (one -CH ₂ -present in this group or two or more non-adjacent -CH ₂ -s may be substituted with -O-),

(b) a 1,4-phenylene group (one -CH= present in this group or two or more non-adjacent -CH=s may be substituted with -N=), and

(c) Naphthalene-2,6-diyl group, 1,2,3,4-tetrahydronaphthalene-2,6-diyl group or decahydronaphthalene-2,6-diyl group (naphthalene-2,6-diyl group Alternatively, one -CH= present in the 1,2,3,4-tetrahydronaphthalene-2,6-diyl group or two or more non-adjacent -CH=s may be substituted with -N=.)

Represents a group selected from the group consisting of, and the groups (a), (b) and (c) are each independently an alkyl group (one -CH ₂ -present in this group or two or more not adjacent -CH ₂ - is optionally substituted with -O-), an alkenyl group (the group 1 -CH ₂ present in the - at least two are not adjacent, or -CH ₂ - is optionally substituted by -O-. ), may be substituted with a cyano group, a fluorine atom or a chlorine atom,

Z ^N11 and Z ^N12 are each independently a single bond, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, -OCF ₂ -, -CF ₂ O-, -CH=NN=CH-, -CH=CH-, -CF=CF- or -C≡C-,

When a plurality of A ^N11 and/or A ^N12 are present, they may be the same or different, and when a plurality of Z ^N11 and/or Z ^N12 are present, they may be the same or different, but the general formula (N-1d ) Excluding compounds denoted.)

The lower limit of the preferable content of the compound represented by formula (i) in the liquid crystal composition of the present application is 1%, 2%, 3%, 5%, 6%, and the upper limit of the preferable content is 15%, 13 %, 12%, 10%, 8%, and 7%. In order to improve the response speed and contrast ratio, it is preferable that the content is large, but when the storage stability at low temperature is important, it is not preferable to increase the content too much.

The compound represented by the general formula (N-1d) corresponds to a compound that is genetically negative (the sign of Δε is negative and its absolute value is greater than 2).

Although only 1 type may be used for the compound represented by general formula (N-1d), it may be used in combination of 2 or more types. It can also be used in combination of 3 types or 4 or more types.

Preferred of the compound represented by the formula (i) relative to the total amount of the composition of the present invention, the compound represented by the general formula (N-1d) when contained, and the compound represented by the general formula (N-1) when contained The lower limit of the content is 1%, 10%, 20%, 30%, 40%, 50%, 55%, 60%, 65%, 70%, 75%, 80 %to be. The upper limit of the preferable content is 95%, 85%, 75%, 65%, 55%, 45%, 35%, and 25%.

The compound denoted by the general formula (N-1d) is the following compound.

(In the formula, R ^Nd11 and R ^Nd12 each independently represent an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent -CH ₂ ^-s in the alkyl group are each independently -CH=CH-, -C≡C-, -O-, -CO-, -COO- or -OCO- may be substituted,

n ^Nd11 represents 1, 2 or 3.)

Although only 1 type may be used for the compound represented by general formula (N-1d), 2 or more types may be used.

In the general formula (N-1d), R ^Nd11 is an alkyl group having 1 to 8 carbon atoms, an alkoxy group having 1 to 8 carbon atoms, an alkenyl group having 2 to 8 carbon atoms, or an egg having 2 to 8 carbon atoms. A kenyloxy group is preferred, an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkenyloxy group having 2 to 5 carbon atoms is preferred, and carbon More preferably an alkyl group having 1 to 5 atoms or an alkenyl group having 2 to 5 carbon atoms, more preferably an alkyl group having 2 to 5 carbon atoms or an alkenyl group having 2 to 3 carbon atoms, Alkenyl groups (propenyl groups) are particularly preferred. A linear C1-C5 alkyl group, a linear C1-C4 alkoxy group, and a linear C2-C5 alkenyl group are preferable. In order to stabilize the nematic phase, it is preferable that the total of carbon atoms and oxygen atoms, if present, is 5 or less, and is preferably linear.

Especially preferred are ethyl group and propyl group.

R ^Nd12 is preferably an alkyl group having 1 to 8 carbon atoms, an alkoxy group having 1 to 8 carbon atoms, an alkenyl group having 2 to 8 carbon atoms, or an alkenyloxy group having 2 to 8 carbon atoms, and An alkyl group having 1 to 5, an alkoxy group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkenyloxy group having 2 to 5 carbon atoms are preferable, and an alkyl group or carbon having 1 to 5 carbon atoms An alkenyl group having 2 to 5 atoms is more preferred, an alkyl group having 2 to 5 carbon atoms or an alkenyl group having 2 to 3 carbon atoms is more preferred, and an alkenyl group having 3 carbon atoms (propenyl group) is particularly preferred Do. A linear C1-C5 alkyl group, a linear C1-C4 alkoxy group, and a linear C2-C5 alkenyl group are preferable. In order to stabilize the nematic phase, it is preferable that the total of carbon atoms and oxygen atoms, if present, is 5 or less, and is preferably linear.

Especially preferred are a methoxy group and an ethoxy group.

n ^Nd11 is preferably 1 or 2, and a compound in which n ^Nd11 is 1 and a compound in which n ^Nd11 is 2 are preferably contained together.

One or two types of compounds in which ^nNd11 is 1 can be used, but from the viewpoint of improvement of the nematic upper and lower limit temperature, two types are preferably used, and when two types are used, it is preferable to use R ^Nd11 as the same substituent. .

One or two types of compounds in which ^nNd11 is 2 can be used, but from the viewpoint of improving the nematic upper and lower limit temperature, two types are preferably used, and when two types are used, R ^Nd12 is preferably used as the same substituent. .

n When ^Nd11 the use of compound 1 and n is ^Nd11 together two compounds, n is ^Nd11 is preferred to use more than two compounds.

The compound denoted by general formula (N-1d) is preferably a compound denoted by general formula (N-1-10) and a compound denoted by general formula (N-1-11).

A compound denoted by a general formula (N-1-10) is the following compound.

(In the formula, R ^N1101 and R ^N1102 each independently represent the same meaning as R ^N11 and R ^N12 in General Formula (N).)

R ^N1101 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably an ethyl group, a propyl group, a butyl group, a vinyl group, or a 1-propenyl group. R ^N1102 is preferably 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 is preferably an ethoxy group, a propoxy group, or a butoxy group.

The compound denoted by the general formula (N-1-10) may be used alone, or two or more compounds may be used in combination. Although there is no particular limitation on the kind of compound that can be combined, it is appropriately combined and used according to the required performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The kind of compound to be used is, for example, 1 type, 2 types, 3 types, 4 types, and 5 or more types as an embodiment of the present invention.

If you value the improvement of Δε, it is preferable to set the content slightly higher. If you value solubility at low temperatures, setting the content slightly higher will increase the effect. If you value T _NI , setting the content slightly higher The effect is high. In addition, in the case of improving the dripping mark or seizure characteristic, it is preferable to set the range of the content to the middle.

The lower limit of the preferred content of the compound represented by the formula (N-1-10) relative to the total amount of the composition of the present invention is 5%, 10%, 13%, 15%, 17%, and 20%. . The upper limit of the preferred content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, based on the total amount of the composition of the present invention. .

Further, the compound represented by the general formula (N-1-10) is preferably a compound selected from the group of compounds represented by the formula (N-1-10.1) to the formula (N-1-10.21), and the formula ( It is preferably a compound represented by N-1-10.1) to (N-1-10.5), formula (N-1-10.20) and formula (N-1-10.21), and formula (N-1-10.1), Compounds represented by formula (N-1-10.2), formula (N-1-10.20) and formula (N-1-10.21) are preferred, and formula (N-1-10.1) and formula (N-1-10.2 ) Is preferred, and the compound represented by formula (N-1-10.2) is preferred.

Compounds represented by formula (N-1-10.1), formula (N-1-10.2), formula (N-1-10.20) and formula (N-1-10.21) are used alone or in combination. It is also possible, but the lower limit of the preferred content of these compounds alone or with respect to the total amount of the composition of the present invention is 3%, 5%, 8%, 10%, 13%, and 15%. The upper limit of the preferred content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention.

A compound denoted by a general formula (N-1-11) is the following compound.

(In the formula, R ^N1111 and R ^N1112 each independently represent the same meaning as R ^N11 and R ^N12 in General Formula (N).)

R ^N1111 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably an ethyl group, a propyl group, a butyl group, a vinyl group, or a 1-propenyl group. R ^N1112 is preferably 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 preferably an ethoxy group, a propoxy group, or a butoxy group.

The compound denoted by the general formula (N-1-11) may be used alone, or two or more compounds may be used in combination. Although there is no particular limitation on the kind of compound that can be combined, it is appropriately combined and used according to the required performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The kind of compound to be used is, for example, 1 type, 2 types, 3 types, 4 types, and 5 or more types as an embodiment of the present invention.

If you value the improvement of Δε, it is desirable to set the content slightly higher. If you value solubility at low temperatures, setting the content slightly lower will increase the effect, and if you value T _NI , setting the content slightly higher The effect is high. In addition, in the case of improving the dripping mark or the firing characteristics, it is preferable to set the range of the content in the middle.

The lower limit of the preferred content of the compound represented by the formula (N-1-11) relative to the total amount of the composition of the present invention is 5%, 10%, 13%, 15%, 17%, and 20%. . The upper limit of the preferred content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, based on the total amount of the composition of the present invention. .

Further, the compound represented by the general formula (N-1-11) is preferably a compound selected from the group of compounds represented by the formula (N-1-11.1) to the formula (N-1-11.14), and the formula ( It is preferable that it is a compound represented by N-1-11.2), a formula (N-1-11.4), a formula (N-1-11.11), and (N-1-11.14).

The compounds represented by the formulas (N-1-11.2) and (N-1-11.4) may be used alone or in combination, but the preferred content of these compounds alone or with respect to the total amount of the composition of the present invention The lower limits of are 3%, 5%, 8%, 10%, 13%, and 15%. The upper limit of the preferred content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, based on the total amount of the composition of the present invention. .

Formula (N-1-10.1), formula (N-1-10.2), formula (N-1-11.2), formula (N-1-11.4), formula (N-1-11.11) and formula (N-1 It is preferable to use 3 to 6 compounds selected from the compounds represented by -11.14), and represented by formulas (N-1-10.1), (N-1-11.2) and (N-1-11.4) It is preferable to use a combination of the compounds represented by the formula (N-1-10.1), formula (N-1-10.2), formula (N-1-11.2) and the compound represented by the formula (N-1-11.4). It is preferable to use a combination, and it is preferable to use a combination of the compounds represented by the formula (N-1-10.2), the formula (N-1-11.11) and the formula (N-1-11.14).

Although only 1 type may be used for the compound represented by General formula (N-1), 2 or more types may be used. The compound represented by the general formula (N-1) corresponds to a compound that is genetically negative (the sign of Δε is negative and its absolute value is greater than 2).

The compound denoted by General Formula (N-1) is the following compound.

(In the formula, R ^N11 and R ^N12 each independently represent an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent -CH ₂ -s in the alkyl group are each independently -CH=CH-, -C≡C-, -O-, -CO-, -COO- or -OCO- may be substituted,

n ^N11 and n ^N12 represent 0, 1, 2 or 3, where n ^N11 + n ^N12 represents 1, 2 or 3,

A ^N11 and A ^N12 are each independently

(a) 1,4- cyclohexylene group (the group 1 -CH ₂ present in the - at least two are not adjacent, or -CH ₂ -. is or may be substituted with -O-), and

(b) 1,4-phenylene group (one -CH= present in this group or two or more non-adjacent -CH=s may be substituted with -N=.)

(c) Naphthalene-2,6-diyl group, 1,2,3,4-tetrahydronaphthalene-2,6-diyl group or decahydronaphthalene-2,6-diyl group (naphthalene-2,6-diyl group Alternatively, one -CH= present in the 1,2,3,4-tetrahydronaphthalene-2,6-diyl group or two or more non-adjacent -CH=s may be substituted with -N=.)

Represents a group selected from the group consisting of, and the groups (a), (b) and (c) are each independently an alkyl group (one -CH ₂ -present in this group or two or more not adjacent -CH ₂ - is optionally substituted with -O-), an alkenyl group (the group 1 -CH ₂ present in the - at least two are not adjacent, or -CH ₂ - is optionally substituted by -O-. ), may be substituted with a cyano group, a fluorine atom or a chlorine atom,

Z ^N11 and Z ^N12 are each independently a single bond, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, -OCF _2- , -CF ₂ O-, -CH=NN=CH-, -CH=CH-, -CF=CF- or -C≡C-,

When a plurality of A ^N11 and/or A ^N12 are present, they may be the same or different, and when a plurality of Z ^N11 and/or Z ^N12 are present, they may be the same or different, but the general formula (N-1 The compound represented by) excludes the compound represented by the general formula (N-1d).)

It is preferable that the compound represented by general formula (N-1) is a compound in which Δε is negative and its absolute value is greater than 3.

In general formula (N-1), R ^N11 and R ^N12 are each independently an alkyl group having 1 to 8 carbon atoms, an alkoxy group having 1 to 8 carbon atoms, an alkenyl group having 2 to 8 carbon atoms or a carbon atom An alkenyloxy group having 2 to 8 atoms is preferred, and an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms An oxy group is preferred, an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms is more preferred, an alkyl group having 2 to 5 carbon atoms or an alkenyl group having 2 to 3 carbon atoms is more preferred, , An alkenyl group (propenyl group) having 3 carbon atoms is particularly preferable.

In addition, when the ring structure to which it 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 an alkenyl having 4 to 5 carbon atoms If a group is preferable and the ring structure to which it is bonded is a saturated ring structure such as cyclohexane, pyran, and dioxane, a straight-chain alkyl group having 1 to 5 carbon atoms or a straight-chain alkoxy group having 1 to 4 carbon atoms A group and a straight chain alkenyl group having 2 to 5 carbon atoms are preferable. In order to stabilize the nematic phase, it is preferable that the total of carbon atoms and oxygen atoms, if present, is 5 or less, and is preferably linear.

As the alkenyl group, it is preferable to be selected from groups represented by any one of formulas (R1) to (R5) (black dots in each formula represent carbon atoms in the ring structure).

Preferably, they are an alkyl group having 1 to 5 carbon atoms and an alkoxy group having 1 to 5 carbon atoms, and they are a methyl group, an ethyl group, a propyl group, a methoxy group, an ethoxy group, and a propoxy group.

When A ^N11 and A ^N12 are each independently required to increase Δn, it is preferably aromatic, in order to improve response speed, it is preferably aliphatic, and trans-1,4-cyclohexylene group, 1,4 -Phenylene group, 2-fluoro-1,4-phenylene group, 3-fluoro-1,4-phenylene group, 3,5-difluoro-1,4-phenylene group, 2,3-difluoro -1,4-phenylene group, 1,4-cyclohexenylene group, 1,4-bicyclo[2.2.2]octylene group, piperidine-1,4-diyl group, naphthalene-2,6-diyl group , Decahydronaphthalene-2,6-diyl group or 1,2,3,4-tetrahydronaphthalene-2,6-diyl group is preferably represented, more preferably the following structure is represented,

A trans-1,4-cyclohexylene group, 1,4-cyclohexenylene group, or 1,4-phenylene group is preferable, and a trans-1,4-cyclohexylene group or 1,4-phenylene group is more preferable. Do.

Z ^N11 and Z ^N12 each independently represent -CH ₂ O-, -CF ₂ O-, -CH ₂ CH ₂ -, -CF ₂ CF ₂ -or a single bond, and -CH ₂ O-,- CH ₂ CH ₂ -or a single bond is more preferred, and -CH ₂ O- or a single bond is particularly preferred.

n ^N11 + n ^N12 is preferably 1 or 2, n ^N11 is 1 and n ^N12 is 0, n ^N11 is 2 and n ^N12 is 0, n ^N11 is 1 and n ^N12 is 1, n Combinations in which ^N11 is 2 and n ^N12 is 1 are preferred.

However, the compound represented by the general formula (N-1d) is excluded.

The lower limit of the preferred content of the compound represented by the general formula (N-1) relative to the total amount of the composition of the present invention is 1%, 10%, 20%, 30%, 40%, 50%, 55%, 60%, 65%, 70%, 75%, 80%. The upper limit of the preferable content is 95%, 85%, 75%, 65%, 55%, 45%, 35%, 25%, and 20%.

The lower limit of the preferred content of the sum of the compound represented by the general formula (N-1d) and the compound represented by the general formula (N-1) relative to the total amount of the composition of the present invention is 1%, 10%, and 20% Is, 30%, 40%, 50%, 55%, 60%, 65%, 70%, 75%, and 80%. The upper limit of the preferable content is 95%, 85%, 75%, 65%, 55%, 45%, 35%, 25%, and 20%.

When the viscosity of the composition of the present invention is kept low and a composition having a fast response speed is required, it is preferable that the lower limit is low and the upper limit is low. In addition, when the composition of the present invention maintains high Tni and a composition having good temperature stability is required, it is preferable that the lower limit is low and the upper limit is low. In addition, when it is desired to increase the dielectric anisotropy in order to keep the driving voltage low, it is preferable that the above lower limit is high and the upper limit is high.

As the compound represented by the general formula (N-1), a group of compounds represented by the following general formulas (N-1a) to (N-1g) can be mentioned.

(In the formulas, R ^N11 and R ^N12 represents the same meaning as R ^N11 and R ^N12 in the formula (N-1), n ^Na11 is 0 or 1, n ^Nb11 represents 1 or 2, n ^Nc11 represents 0 or 1, n ^Ne11 represents 1 or 2, n ^Nf11 represents 1 or 2, n ^Ng11 represents 1 or 2, and A ^Ne11 represents a trans-1,4-cyclohexylene group or 1 , 4-phenylene group, A ^Ng11 represents a trans-1,4-cyclohexylene group, a 1,4-cyclohexenylene group, or a 1,4-phenylene group, at least one of which is 1,4-cyclohexenyl ^{Represents a ren} group, and Z ^Ne11 represents a single bond or ethylene, and at least one represents ethylene.)

More specifically, the compound represented by the general formula (N-1) is preferably a compound selected from the group of compounds represented by the general formula (N-1-1) to (N-1-21).

The compound denoted by general formula (N-1-1) is the following compound.

(In the formula, R ^N111 and R ^N112 each independently represent the same meaning as R ^N11 and R ^N12 in General Formula (N).)

R ^N111 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably a propyl group, a pentyl group, or a vinyl group. R ^N112 is preferably 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 an ethoxy group or a butoxy group is preferable.

The compound denoted by the general formula (N-1-1) may be used alone, or two or more compounds may be used in combination. Although there is no particular limitation on the kind of compound that can be combined, it is appropriately combined and used according to the required performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The kind of compound to be used is, for example, 1 type, 2 types, 3 types, 4 types, and 5 or more types as an embodiment of the present invention.

If you value the improvement of Δε, it is desirable to set the content slightly higher. If you value solubility at low temperatures, setting a slightly higher content will increase the effect, and if you value T _NI , setting a slightly lower content will The effect is high. In addition, in the case of improving the dripping mark or the firing characteristics, it is preferable to set the range of the content in the middle.

The lower limit of the preferred content of the compound represented by the formula (N-1-1) relative to the total amount of the composition of the present invention is 5%, 10%, 13%, 15%, 17%, and 20%. , 23%, 25%, 27%, 30%, 33%, and 35%. The upper limit of the preferred content is 50%, 40%, 38%, 35%, 33%, 30%, 28%, 25%, 23%, based on the total amount of the composition of the present invention. , 20%, 18%, 15%, 13%, 10%, 8%, 7%, 6%, 5%, 3%.

In addition, the compound represented by the general formula (N-1-1) is preferably a compound selected from the group of compounds represented by the formula (N-1-1.1) to the formula (N-1-1.23), and the formula ( It is preferably a compound represented by N-1-1.1) to (N-1-1.4), and a compound represented by formula (N-1-1.1) and formula (N-1-1.3) is preferred.

The compounds represented by the formulas (N-1-1.1) to (N-1-1.22) may be used alone or in combination, but with respect to the total amount of the composition of the present invention, alone or in the preferred content of these compounds The lower limit is 5%, 10%, 13%, 15%, 17%, 20%, 23%, 25%, 27%, 30%, 33%, and 35%. . The upper limit of the preferred content is 50%, 40%, 38%, 35%, 33%, 30%, 28%, 25%, 23%, based on the total amount of the composition of the present invention. , 20%, 18%, 15%, 13%, 10%, 8%, 7%, 6%, 5%, 3%.

A compound denoted by a general formula (N-1-2) is the following compound.

(In the formula, R ^N121 and R ^N122 each independently represent the same meaning as R ^N11 and R ^N12 in General Formula (N).)

R ^N121 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably an ethyl group, a propyl group, a butyl group or a pentyl group. R ^N122 is preferably 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, preferably a methyl group, a propyl group, a methoxy group, an ethoxy group or a propoxy group. .

The compound denoted by the general formula (N-1-2) may be used alone, or two or more compounds may be used in combination. Although there is no particular limitation on the kind of compound that can be combined, it is appropriately combined and used according to the required performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The kind of compound to be used is, for example, 1 type, 2 types, 3 types, 4 types, and 5 or more types as an embodiment of the present invention.

If you value the improvement of Δε, it is desirable to set the content slightly higher. If you value solubility at low temperatures, setting a little less content will increase the effect. If you value T _NI , setting a little higher content will The effect is high. In addition, in the case of improving the dripping mark or the firing characteristics, it is preferable to set the range of the content in the middle.

The lower limit of the preferred content of the compound represented by the formula (N-1-2) relative to the total amount of the composition of the present invention is 5%, 7%, 10%, 13%, 15%, and 17%. , 20%, 23%, 25%, 27%, 30%, 33%, 35%, 37%, 40%, and 42%. The upper limit of the preferred content is 50%, 48%, 45%, 43%, 40%, 38%, 35%, 33%, and 30%, based on the total amount of the composition of the present invention. , 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 7%, 6%, 5%.

Moreover, it is preferable that the compound represented by general formula (N-1-2) is a compound selected from the compound group represented by formula (N-1-2.1)-formula (N-1-2.22), and formula ( N-1-2.3) ~ formula (N-1-2.7), formula (N-1-2.10), formula (N-1-2.11), formula (N-1-2.13) and formula (N-1-2.20 ) Is preferably a compound represented by, and when the improvement of Δε is important, a compound represented by the formula (N-1-2.3) to (N-1-2.7) is preferable, and the improvement of T _NI is important. In this case, it is preferably a compound represented by formula (N-1-2.10), formula (N-1-2.11), and formula (N-1-2.13), and when emphasis is placed on improving response speed, formula (N- It is preferably a compound represented by 1-2.20).

The compounds represented by the formulas (N-1-2.1) to (N-1-2.22) may be used alone or in combination, but the preferred content of these compounds alone or with respect to the total amount of the composition of the present invention The lower limit of is 5%, 10%, 13%, 15%, 17%, 20%, 23%, 25%, 27%, 30%, 33%, 35% to be. The upper limit of the preferred content is 50%, 40%, 38%, 35%, 33%, 30%, 28%, 25%, 23%, based on the total amount of the composition of the present invention. , 20%, 18%, 15%, 13%, 10%, 8%, 7%, 6%, 5%, 3%.

A compound denoted by a general formula (N-1-3) is the following compound.

(In the formula, R ^N131 and R ^N132 each independently represent the same meaning as R ^N11 and R ^N12 in General Formula (N).)

R ^N131 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably an ethyl group, a propyl group, or a butyl group. R ^N132 is preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 3 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and preferably a 1-propenyl group, an ethoxy group, a propoxy group or a butoxy group. Do.

The compound denoted by the general formula (N-1-3) may be used alone, or two or more compounds may be used in combination. Although there is no particular limitation on the kind of compound that can be combined, it is appropriately combined and used according to the required performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The kind of compound to be used is, for example, 1 type, 2 types, 3 types, 4 types, and 5 or more types as an embodiment of the present invention.

If you value the improvement of Δε, it is desirable to set the content slightly higher. If you value solubility at low temperatures, setting a little higher content will increase the effect, and if you value T _NI , setting a little higher content will The effect is high. In addition, in the case of improving the dripping mark or the firing characteristics, it is preferable to set the range of the content in the middle.

The lower limit of the preferred content of the compound represented by the formula (N-1-3) relative to the total amount of the composition of the present invention is 5%, 10%, 13%, 15%, 17%, and 20%. . The upper limit of the preferred content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, based on the total amount of the composition of the present invention. .

In addition, the compound represented by the general formula (N-1-3) is preferably a compound selected from the group of compounds represented by the formula (N-1-3.1) to the formula (N-1-3.21), and the formula ( It is preferably a compound represented by N-1-3.1) to (N-1-3.7) and a formula (N-1-3.21), and a formula (N-1-3.1), a formula (N-1-3.2), A compound represented by a formula (N-1-3.3), a formula (N-1-3.4) and a formula (N-1-3.6) is preferred.

Compounds represented by formula (N-1-3.1) to formula (N-1-3.4), formula (N-1-3.6) and formula (N-1-3.21) may be used alone or in combination. It is also possible, but from the combination of formula (N-1-3.1) and formula (N-1-3.2), formula (N-1-3.3), formula (N-1-3.4) and formula (N-1-3.6) A combination of two or three selected types is preferable. The lower limit of the preferable content of these compounds alone or with respect to the total amount of the composition of the present invention is 5%, 10%, 13%, 15%, 17%, and 20%. The upper limit of the preferred content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, based on the total amount of the composition of the present invention. .

A compound denoted by a general formula (N-1-4) is the following compound.

(In the formula, R ^N141 and R ^N142 each independently represent the same meaning as R ^N11 and R ^N12 in General Formula (N).)

R ^N141 and R ^N142 are each independently 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 a methyl group, a propyl group, an ethoxy group, or a butoxide The timing is desirable.

The compound denoted by the general formula (N-1-4) may be used alone, or two or more compounds may be used in combination. Although there is no particular limitation on the kind of compound that can be combined, it is appropriately combined and used according to the required performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The kind of compound to be used is, for example, 1 type, 2 types, 3 types, 4 types, and 5 or more types as an embodiment of the present invention.

If you value the improvement of Δε, it is desirable to set the content slightly higher. If you value solubility at low temperatures, setting a slightly higher content will increase the effect, and if you value T _NI , setting a slightly lower content will The effect is high. In addition, in the case of improving the dripping mark or the firing characteristics, it is preferable to set the range of the content in the middle.

The lower limit of the preferred content of the compound represented by the formula (N-1-4) relative to the total amount of the composition of the present invention is 3%, 5%, 7%, 10%, 13%, and 15%. , 17%, and 20%. The upper limit of the preferred content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, based on the total amount of the composition of the present invention. , 11%, 10%, and 8%.

In addition, the compound represented by the general formula (N-1-4) is preferably a compound selected from the group of compounds represented by the formula (N-1-4.1) to the formula (N-1-4.14), and the formula ( It is preferably a compound represented by N-1-4.1) to (N-1-4.4), and by formula (N-1-4.1), formula (N-1-4.2) and formula (N-1-4.4) The displayed compound is preferable.

The compounds represented by the formulas (N-1-4.1) to (N-1-4.14) may be used alone or in combination, but with respect to the total amount of the composition of the present invention, alone or in a preferred content of these compounds The lower limit values are 3%, 5%, 7%, 10%, 13%, 15%, 17%, and 20%. The upper limit of the preferred content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, based on the total amount of the composition of the present invention. , 11%, 10%, and 8%.

A compound denoted by a general formula (N-1-5) is the following compound.

(In the formula, R ^N151 and R ^N152 each independently represent the same meaning as R ^N11 and R ^N12 in General Formula (N).)

R ^N151 and R ^N152 are each independently 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 an ethyl group, a propyl group, or a butyl group is preferable.

The compound denoted by the general formula (N-1-5) may be used alone, or two or more compounds may be used in combination. Although there is no particular limitation on the kind of compound that can be combined, it is appropriately combined and used according to the required performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The kind of compound to be used is, for example, 1 type, 2 types, 3 types, 4 types, and 5 or more types as an embodiment of the present invention.

If you value the improvement of Δε, it is desirable to set the content slightly higher. If you value solubility at low temperatures, setting a little less content will increase the effect. If you value T _NI , setting a little higher content will The effect is high. In addition, in the case of improving the dripping mark or the firing characteristics, it is preferable to set the range of the content in the middle.

The lower limit of the preferred content of the compound represented by the formula (N-1-5) relative to the total amount of the composition of the present invention is 5%, 8%, 10%, 13%, 15%, and 17%. , 20%. The upper limit of the preferred content is 35%, 33%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, based on the total amount of the composition of the present invention. , 13%.

Moreover, it is preferable that the compound represented by general formula (N-1-5) is a compound selected from the compound group represented by formula (N-1-5.1)-formula (N-1-5.6), and formula ( Compounds represented by N-1-5.1), formula (N-1-5.2) and formula (N-1-5.4) are preferred.

The compounds represented by formula (N-1-5.1), formula (N-1-5.2) and formula (N-1-5.4) may be used alone or in combination, but the total amount of the composition of the present invention The lower limit of the preferable content of either alone or of these compounds is 5%, 8%, 10%, 13%, 15%, 17%, and 20%. The upper limit of the preferred content is 35%, 33%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, based on the total amount of the composition of the present invention. , 13%.

A compound denoted by a general formula (N-1-12) is the following compound.

(In the formula, R ^N1121 and R ^N1122 each independently represent the same meaning as R ^N11 and R ^N12 in General Formula (N).)

R ^N1121 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably an ethyl group, a propyl group, or a butyl group. R ^N1122 is preferably 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 preferably an ethoxy group, a propoxy group, or a butoxy group.

The compound denoted by the general formula (N-1-12) may be used alone, or two or more compounds may be used in combination. Although there is no particular limitation on the kind of compound that can be combined, it is appropriately combined and used according to the required performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The kind of compound to be used is, for example, 1 type, 2 types, 3 types, 4 types, and 5 or more types as an embodiment of the present invention.

If you value the improvement of Δε, it is desirable to set the content slightly higher. If you value solubility at low temperatures, setting a little higher content will increase the effect, and if you value T _NI , setting a little higher content will The effect is high. In addition, in the case of improving the dripping mark or the firing characteristics, it is preferable to set the range of the content in the middle.

The lower limit of the preferred content of the compound represented by the formula (N-1-12) relative to the total amount of the composition of the present invention is 5%, 10%, 13%, 15%, 17%, and 20%. . The upper limit of the preferred content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, based on the total amount of the composition of the present invention. .

A compound denoted by a general formula (N-1-13) is the following compound.

(In the formula, R ^N1131 and R ^N1132 each independently represent the same meaning as R ^N11 and R ^N12 in General Formula (N).)

R ^N1131 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably an ethyl group, a propyl group, or a butyl group. R ^N1132 is preferably 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 an ethoxy group, a propoxy group, or a butoxy group is preferable.

The compound denoted by the general formula (N-1-13) may be used alone, or two or more compounds may be used in combination. Although there is no particular limitation on the kind of compound that can be combined, it is appropriately combined and used according to the required performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The kind of compound to be used is, for example, 1 type, 2 types, 3 types, 4 types, and 5 or more types as an embodiment of the present invention.

If you value the improvement of Δε, it is desirable to set the content slightly higher. If you value solubility at low temperatures, setting a little higher content will increase the effect, and if you value T _NI , setting a little higher content will The effect is high. In addition, in the case of improving the dripping mark or the firing characteristics, it is preferable to set the range of the content in the middle.

The lower limit of the preferred content of the compound represented by the formula (N-1-13) relative to the total amount of the composition of the present invention is 5%, 10%, 13%, 15%, 17%, and 20%. . The upper limit of the preferred content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, based on the total amount of the composition of the present invention. .

A compound denoted by a general formula (N-1-14) is the following compound.

(In the formula, R ^N1141 and R ^N1142 each independently represent the same meaning as R ^N11 and R ^N12 in General Formula (N).)

R ^N1141 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably an ethyl group, a propyl group, or a butyl group. R ^N1142 is preferably 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 preferably an ethoxy group, a propoxy group or a butoxy group.

The compound denoted by the general formula (N-1-14) may be used alone, or two or more compounds may be used in combination. Although there is no particular limitation on the kind of compound that can be combined, it is appropriately combined and used according to the required performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The kind of compound to be used is, for example, 1 type, 2 types, 3 types, 4 types, and 5 or more types as an embodiment of the present invention.

If you value the improvement of Δε, it is desirable to set the content slightly higher. If you value solubility at low temperatures, setting a little higher content will increase the effect, and if you value T _NI , setting a little higher content will The effect is high. In addition, in the case of improving the dripping mark or the firing characteristics, it is preferable to set the range of the content in the middle.

The lower limit of the preferred content of the compound represented by the formula (N-1-14) relative to the total amount of the composition of the present invention is 5%, 10%, 13%, 15%, 17%, and 20%. . The upper limit of the preferred content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, based on the total amount of the composition of the present invention. .

A compound denoted by a general formula (N-1-15) is the following compound.

(In the formula, R ^N1151 and R ^N1152 each independently represent the same meaning as R ^N11 and R ^N12 in General Formula (N).)

R ^N1151 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably an ethyl group, a propyl group, or a butyl group. R ^N1152 is preferably 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 preferably an ethoxy group, a propoxy group, or a butoxy group.

The compound denoted by the general formula (N-1-15) may be used alone, or two or more compounds may be used in combination. Although there is no particular limitation on the kind of compound that can be combined, it is appropriately combined and used according to the required performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The kind of compound to be used is, for example, 1 type, 2 types, 3 types, 4 types, and 5 or more types as an embodiment of the present invention.

If you value the improvement of Δε, it is desirable to set the content slightly higher. If you value solubility at low temperatures, setting a little higher content will increase the effect, and if you value T _NI , setting a little higher content will The effect is high. In addition, in the case of improving the dripping mark or the firing characteristics, it is preferable to set the range of the content in the middle.

The lower limit of the preferred content of the compound represented by the formula (N-1-15) relative to the total amount of the composition of the present invention is 5%, 10%, 13%, 15%, 17%, and 20%. . The upper limit of the preferred content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, based on the total amount of the composition of the present invention. .

A compound denoted by a general formula (N-1-16) is the following compound.

(Wherein, R and R ^{N1161 N1162} has the same meaning as R ^N11 and R ^N12 in each, independently, formula (N).)

R ^N1161 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably an ethyl group, a propyl group, or a butyl group. R ^N1162 is preferably 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 preferably an ethoxy group, a propoxy group, or a butoxy group.

Although the compound denoted by the general formula (N-1-16) may be used alone, it may be used in combination of two or more compounds. Although there is no particular limitation on the kind of compound that can be combined, it is appropriately combined and used according to the required performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The kind of compound to be used is, for example, 1 type, 2 types, 3 types, 4 types, and 5 or more types as an embodiment of the present invention.

If you value the improvement of Δε, it is desirable to set the content slightly higher. If you value solubility at low temperatures, setting a little higher content will increase the effect, and if you value T _NI , setting a little higher content will The effect is high. In addition, in the case of improving the dripping mark or the firing characteristics, it is preferable to set the range of the content in the middle.

The lower limit of the preferred content of the compound represented by the formula (N-1-16) relative to the total amount of the composition of the present invention is 5%, 10%, 13%, 15%, 17%, and 20%. . The upper limit of the preferred content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, based on the total amount of the composition of the present invention. .

A compound denoted by a general formula (N-1-17) is the following compound.

(In the formula, R ^N1171 and R ^N1172 each independently represent the same meaning as R ^N11 and R ^N12 in General Formula (N).)

R ^N1171 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably an ethyl group, a propyl group, or a butyl group. R ^N1172 is preferably 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 preferably an ethoxy group, a propoxy group, or a butoxy group.

Although the compound denoted by the general formula (N-1-17) may be used alone, it may be used in combination of two or more compounds. Although there is no particular limitation on the kind of compound that can be combined, it is appropriately combined and used according to the required performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The kind of compound to be used is, for example, 1 type, 2 types, 3 types, 4 types, and 5 or more types as an embodiment of the present invention.

If you value the improvement of Δε, it is desirable to set the content slightly higher. If you value solubility at low temperatures, setting a little higher content will increase the effect, and if you value T _NI , setting a little higher content will The effect is high. In addition, in the case of improving the dripping mark or the firing characteristics, it is preferable to set the range of the content in the middle.

The lower limit of the preferred content of the compound represented by the formula (N-1-17) relative to the total amount of the composition of the present invention is 5%, 10%, 13%, 15%, 17%, and 20%. . The upper limit of the preferred content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, and 13% based on the total amount of the composition of the present invention. .

A compound denoted by a general formula (N-1-18) is the following compound.

(In the formula, R ^N1181 and R ^N1182 each independently represent the same meaning as R ^N11 and R ^N12 in General Formula (N).)

R ^N1181 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably a methyl group, an ethyl group, a propyl group or a butyl group. R ^N1182 is preferably 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 preferably an ethoxy group, a propoxy group, or a butoxy group.

Although the compound denoted by the general formula (N-1-18) may be used alone, it may be used in combination of two or more compounds. Although there is no particular limitation on the kind of compound that can be combined, it is appropriately combined and used according to the required performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The kind of compound to be used is, for example, 1 type, 2 types, 3 types, 4 types, and 5 or more types as an embodiment of the present invention.

If you value the improvement of Δε, it is desirable to set the content slightly higher. If you value solubility at low temperatures, setting a little higher content will increase the effect, and if you value T _NI , setting a little higher content will The effect is high. In addition, in the case of improving the dripping mark or the firing characteristics, it is preferable to set the range of the content in the middle.

The lower limit of the preferred content of the compound represented by the formula (N-1-18) relative to the total amount of the composition of the present invention is 5%, 10%, 13%, 15%, 17%, and 20%. . The upper limit of the preferred content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, based on the total amount of the composition of the present invention. .

In addition, the compound represented by the general formula (N-1-18) is preferably a compound selected from the group of compounds represented by the formulas (N-1-18.1) to (N-1-18.5), and the formula ( It is preferably a compound represented by N-1-18.1) to (N-1-11.3), and a compound represented by a formula (N-1-18.2) and a formula (N-1-18.3) is preferred.

The compound denoted by the general formula (N-1-20) is the following compound.

(In the formula, R ^N1201 and R ^N1202 each independently represent the same meaning as R ^N11 and R ^N12 in General Formula (N).)

R ^N1201 and R ^N1202 are each independently an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and an ethyl group, a propyl group, or a butyl group is preferable.

The compound denoted by the general formula (N-1-20) may be used alone, or two or more compounds may be used in combination. Although there is no particular limitation on the kind of compound that can be combined, it is appropriately combined and used according to the required performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The kind of compound to be used is, for example, 1 type, 2 types, 3 types, 4 types, and 5 or more types as an embodiment of the present invention.

If you value the improvement of Δε, it is desirable to set the content slightly higher. If you value solubility at low temperatures, setting a little higher content will increase the effect, and if you value T _NI , setting a little higher content will The effect is high. In addition, in the case of improving the dripping mark or the firing characteristics, it is preferable to set the range of the content in the middle.

The lower limit of the preferred content of the compound represented by the formula (N-1-20) relative to the total amount of the composition of the present invention is 5%, 10%, 13%, 15%, 17%, and 20%. . The upper limit of the preferred content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, and 13% based on the total amount of the composition of the present invention. .

A compound denoted by a general formula (N-1-21) is the following compound.

(In the formula, R ^N1211 and R ^N1212 each independently represent the same meaning as R ^N11 and R ^N12 in General Formula (N).)

R ^N1211 and R ^N1212 are each independently an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and an ethyl group, a propyl group, or a butyl group is preferable.

Although the compound denoted by the general formula (N-1-21) may be used alone, it may be used in combination of two or more compounds. Although there is no particular limitation on the kind of compound that can be combined, it is appropriately combined and used according to the required performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The kind of compound to be used is, for example, 1 type, 2 types, 3 types, 4 types, and 5 or more types as an embodiment of the present invention.

If you value the improvement of Δε, it is desirable to set the content slightly higher. If you value solubility at low temperatures, setting a little higher content will increase the effect, and if you value T _NI , setting a little higher content will The effect is high. In addition, in the case of improving the dripping mark or the firing characteristics, it is preferable to set the range of the content in the middle.

The lower limit of the preferred content of the compound represented by the formula (N-1-21) relative to the total amount of the composition of the present invention is 5%, 10%, 13%, 15%, 17%, and 20%. . The upper limit of the preferred content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, based on the total amount of the composition of the present invention. .

A compound denoted by a general formula (N-1-22) is the following compound.

(In the formula, R ^N1221 and R ^N1222 each independently represent the same meaning as R ^N11 and R ^N12 in General Formula (N).)

Each of R ^N1221 and R ^N1222 is independently an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and an ethyl group, a propyl group, or a butyl group is preferable.

Although the compound denoted by the general formula (N-1-22) may be used alone, it may be used in combination of two or more compounds. Although there is no particular limitation on the kind of compound that can be combined, it is appropriately combined and used according to the required performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The kind of compound to be used is, for example, 1 type, 2 types, 3 types, 4 types, and 5 or more types as an embodiment of the present invention.

If you value the improvement of Δε, it is desirable to set the content slightly higher. If you value solubility at low temperatures, setting a little higher content will increase the effect, and if you value T _NI , setting a little higher content will The effect is high. In addition, in the case of improving the dripping mark or the firing characteristics, it is preferable to set the range of the content in the middle.

The lower limit of the preferred content of the compound represented by the formula (N-1-21) relative to the total amount of the composition of the present invention is 1%, 5%, 10%, 13%, 15%, and 17%. , 20%. The upper limit of the preferred content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, based on the total amount of the composition of the present invention. , 10% and 5%.

In addition, the compound represented by the general formula (N-1-22) is preferably a compound selected from the group of compounds represented by the formulas (N-1-22.1) to (N-1-22.12), and the formula ( It is preferably a compound represented by N-1-22.1) to (N-1-22.5), and a compound represented by formulas (N-1-22.1) to (N-1-22.4) is preferable.

It is preferable that the liquid crystal composition of this invention contains 1 type or 2 or more types of compounds represented by general formula (L).

The compound represented by the general formula (L) corresponds to a genetically almost neutral compound (Δε value of -2 to 2).

However, compounds represented by General Formula (i), General Formula (N-1d) and General Formula (N-1) are excluded.

The compound denoted by the general formula (L) may be used alone, or may be used in combination. There is no particular limitation on the types of compounds that can be combined, but they are appropriately combined and used according to desired performances such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The kind of compound to be used is, for example, one type as an embodiment of the present invention. Or in another embodiment of the present invention, there are 2 types, 3 types, 4 types, 5 types, 6 types, 7 types, 8 types, 9 types, and 10 or more types.

In the composition of the present invention, the content of the compound represented by the general formula (L) is the required performance such as solubility at low temperature, transition temperature, electrical reliability, birefringence, process suitability, drip marks, baking, dielectric anisotropy, etc. It needs to be adjusted accordingly.

The compound represented by the general formula (L) is a so-called nonpolar compound in which Δε is near 0. Therefore, the number of polar groups such as halogen atoms in the molecule is preferably 2 or less, preferably 1 or less, and is preferably 1 in order to improve the solubility with other liquid crystal compounds, and when paying attention to viscosity It is preferable that it is not substituted.

The lower limit of the preferred content of the compound represented by the general formula (L) relative to the total amount of the composition of the present invention is 1%, 10%, 20%, 30%, 40%, 50%, 55% Is, 60%, 65%, 70%, 75%, and 80%. The upper limit of the preferable content is 95%, 85%, 75%, 65%, 55%, 45%, 35%, and 25%.

The lower limit of the preferred content of the compound represented by the general formula (i) and general formula (L) relative to the total amount of the composition of the present invention is 1%, 10%, 20%, 30%, 40%, 50%, 55%, 60%, 65%, 70%, 75%, 80%. The upper limit of the preferable content is 95%, 85%, 75%, 65%, 55%, 45%, 35%, and 25%.

When the viscosity of the composition of the present invention is kept low and a composition having a fast response speed is required, it is preferable that the above lower limit is high and the upper limit is high. In addition, when a composition having a high Tni of the composition of the present invention and a good temperature stability is required, it is preferable that the above lower limit is high and the upper limit is high. In addition, when it is desired to increase the dielectric anisotropy in order to keep the driving voltage low, it is preferable that the lower limit value is low and the upper limit value is low.

When reliability is important, both R ^L1 and R ^L2 are preferably an alkyl group, when it is important to reduce the volatility of the compound, it is preferably an alkoxy group, and when reducing viscosity, at least one is an alkenyl group. It is desirable.

The number of halogen atoms present in the molecule is preferably 0, 1, 2 or 3, preferably 0 or 1, and 1 is preferable when compatibility with other liquid crystal molecules is important.

R ^L1 and R ^L2 are, when the ring structure to which they are 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 4 carbon atoms When the alkenyl group of ~5 is preferable, and the ring structure to which it is bonded is a saturated ring structure such as cyclohexane, pyran and dioxane, a linear alkyl group having 1 to 5 carbon atoms, and a straight chain carbon atom number An alkoxy group of 1 to 4 and a linear alkenyl group having 2 to 5 carbon atoms are preferable. In order to stabilize the nematic phase, it is preferable that the total of carbon atoms and oxygen atoms, if present, is 5 or less, and is preferably linear.

As the alkenyl group, it is preferable to be selected from groups represented by any one of formulas (R1) to (R5) (black dots in each formula represent carbon atoms in the ring structure).

n ^L1 is preferably 0 when the response speed is important, 2 or 3 is preferable in order to improve the upper limit temperature of the nematic phase, and 1 is preferable in order to balance these. It is also preferred to combine compounds of different values in order to meet the properties required as a composition.

A ^L1 , A ^L2 and A ^L3 are preferably aromatic when required to increase Δn, and are preferably aliphatic in order to improve response speed, and each independently a trans-1,4-cyclohexylene group, 1,4-phenylene group, 2-fluoro-1,4-phenylene group, 3-fluoro-1,4-phenylene group, 3,5-difluoro-1,4-phenylene group, 1,4- Cyclohexenylene group, 1,4-bicyclo[2.2.2]octylene group, piperidine-1,4-diyl group, naphthalene-2,6-diyl group, decahydronaphthalene-2,6-diyl group or It is preferable to show a 1,2,3,4-tetrahydronaphthalene-2,6-diyl group, more preferably to show the following structure,

It is more preferable to represent a trans-1,4-cyclohexylene group or a 1,4-phenylene group.

Z ^L1 and Z ^L2 are preferably single bonds when the response speed is important.

The compound represented by the general formula (L) preferably has 0 or 1 halogen atom in its molecule.

The compound represented by General Formula (L) is preferably a compound selected from the group of compounds represented by General Formulas (L-1) to (L-7).

The compound denoted by the general formula (L-1) is the following compound.

(In the formula, R ^L11 and R ^L12 each independently represent the same meaning as R ^L1 and R ^L2 in General Formula (L).)

R ^L11 and R ^L12 are preferably a linear alkyl group having 1 to 5 carbon atoms, a linear alkoxy group having 1 to 4 carbon atoms, and an alkenyl group having 2 to 5 carbon atoms.

The compound denoted by the general formula (L-1) may be used alone, or two or more compounds may be used in combination. Although there is no particular limitation on the kind of compound that can be combined, it is appropriately combined and used according to the required performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The kind of compound to be used is, for example, 1 type, 2 types, 3 types, 4 types, and 5 or more types as an embodiment of the present invention.

The preferable lower limit of the content is 1%, 2%, 3%, 5%, 7%, and 10% with respect to the total amount of the composition of the present invention. The upper limit of the preferred content is 40%, 35%, 33%, 30%, and 25% with respect to the total amount of the composition of the present invention.

When the viscosity of the composition of the present invention is kept low and a composition having a fast response speed is required, it is preferable that the above lower limit is high and the upper limit is high. Further, when the composition of the present invention maintains high Tni and a composition having good temperature stability is required, it is preferable that the above lower limit is intermediate and the upper limit is intermediate. In addition, when it is desired to increase the dielectric anisotropy in order to keep the driving voltage low, it is preferable that the lower limit value is low and the upper limit value is low. In order to improve the viewing angle characteristic, it is not desirable to increase the upper limit.

The compound represented by the general formula (L-1) is preferably a compound selected from the group of compounds represented by the general formula (L-1-1).

(In the formula, R ^L12 represents the same meaning as the meaning in General Formula (L-1).)

The compound represented by the general formula (L-1-1) is preferably a compound selected from the compound group represented by the formula (L-1-1.1) to the formula (L-1-1.3), and the formula (L- It is preferably a compound represented by 1-1.2) or formula (L-1-1.3), and particularly preferably a compound represented by formula (L-1-1.3).

The lower limit of the preferred content of the compound represented by the formula (L-1-1.3) relative to the total amount of the composition of the present invention is 1%, 2%, 3%, 5%, 7%, and 10%. . The upper limit of the preferred content is 20%, 15%, 13%, 10%, 8%, 7%, 6%, 5%, and 3% based on the total amount of the composition of the present invention. .

The compound represented by the general formula (L-1) is preferably a compound selected from the group of compounds represented by the general formula (L-1-2).

(In the formula, R ^L12 represents the same meaning as the meaning in General Formula (L-1).)

The lower limit of the preferred content of the compound represented by the formula (L-1-2) relative to the total amount of the composition of the present invention is 1%, 5%, 10%, 15%, 17%, and 20%. , 23%, 25%, 27%, 30%, and 35%. The upper limit of the preferred content is 60%, 55%, 50%, 45%, 42%, 40%, 38%, 35%, 33%, based on the total amount of the composition of the present invention. , 30%.

Moreover, it is preferable that the compound represented by general formula (L-1-2) is a compound selected from the compound group represented by formula (L-1-2.1)-formula (L-1-2.4), and formula ( It is preferable that it is a compound represented by L-1-2.2)-formula (L-1-2.4). In particular, the compound represented by the formula (L-1-2.2) is preferable because it particularly improves the response speed of the composition of the present invention. In addition, when Tni higher than the response rate is requested, it is preferable to use a compound represented by the formula (L-1-2.3) or (L-1-2.4). The content of the compound represented by the formula (L-1-2.3) and (L-1-2.4) is not preferably 30% or more in order to improve the solubility at low temperatures.

The lower limit of the preferred content of the compound represented by the formula (L-1-2.2) relative to the total amount of the composition of the present invention is 10%, 15%, 18%, 20%, 23%, 25%. , 27%, 30%, 33%, 35%, 38%, and 40%. The upper limit of the preferred content is 60%, 55%, 50%, 45%, 43%, 40%, 38%, 35%, and 32%, based on the total amount of the composition of the present invention. , 30%, 27%, 25%, and 22%.

The lower limit of the preferred content of the sum of the compound represented by the formula (L-1-1.3) and the compound represented by the formula (L-1-2.2) relative to the total amount of the composition of the present invention is 10% and 15%, 20%, 25%, 27%, 30%, 35%, and 40%. The upper limit of the preferred content is 60%, 55%, 50%, 45%, 43%, 40%, 38%, 35%, and 32%, based on the total amount of the composition of the present invention. , 30%, 27%, 25%, and 22%.

The compound represented by the general formula (L-1) is preferably a compound selected from the group of compounds represented by the general formula (L-1-3).

(In the formula, R ^L13 and R ^L14 each independently represent an alkyl group having 1 to 8 carbon atoms or an alkoxy group having 1 to 8 carbon atoms.)

R ^L13 and R ^L14 are preferably a linear alkyl group having 1 to 5 carbon atoms, a linear alkoxy group having 1 to 4 carbon atoms, and an alkenyl group having 2 to 5 carbon atoms.

The lower limit of the preferred content of the compound represented by the formula (L-1-3) relative to the total amount of the composition of the present invention is 1%, 5%, 10%, 13%, 15%, and 17%. , 20%, 23%, 25%, and 30%. The upper limit of the preferred content is 60%, 55%, 50%, 45%, 40%, 37%, 35%, 33%, and 30%, based on the total amount of the composition of the present invention. , 27%, 25%, 23%, 20%, 17%, 15%, 13%, 10%.

In addition, it is preferable that the compound represented by general formula (L-1-3) is a compound selected from the compound group represented by formula (L-1-3.1)-formula (L-1-3.12), and formula ( It is preferably a compound represented by L-1-3.1), formula (L-1-3.3) or formula (L-1-3.4). In particular, the compound represented by the formula (L-1-3.1) is preferable because it particularly improves the response speed of the composition of the present invention. In addition, when requesting Tni higher than the response rate, the compound represented by formula (L-1-3.3), formula (L-1-3.4), formula (L-1-3.11) and formula (L-1-3.12) It is preferable to use. The total content of the compound represented by the formula (L-1-3.3), formula (L-1-3.4), formula (L-1-3.11) and formula (L-1-3.12) indicates the solubility at low temperature. It is not preferable to set it as 20% or more in order to make it favorable.

The lower limit of the preferred content of the compound represented by the formula (L-1-3.1) relative to the total amount of the composition of the present invention is 1%, 2%, 3%, 5%, 7%, and 10%. , 13%, 15%, 18%, and 20%. The upper limit of the preferable content is 20%, 17%, 15%, 13%, 10%, 8%, 7%, and 6% with respect to the total amount of the composition of the present invention.

The compound represented by the general formula (L-1) is preferably a compound selected from the group of compounds represented by the general formula (L-1-4) and/or (L-1-5).

(In the formula, R ^L15 and R ^L16 each independently represent an alkyl group having 1 to 8 carbon atoms or an alkoxy group having 1 to 8 carbon atoms.)

R ^L15 and R ^L16 are preferably a linear alkyl group having 1 to 5 carbon atoms, a linear alkoxy group having 1 to 4 carbon atoms, and an alkenyl group having 2 to 5 carbon atoms.

The lower limit of the preferred content of the compound represented by the formula (L-1-4) relative to the total amount of the composition of the present invention is 1%, 5%, 10%, 13%, 15%, and 17%. , 20%. The upper limit of the preferred content is 25%, 23%, 20%, 17%, 15%, 13%, and 10% with respect to the total amount of the composition of the present invention.

The lower limit of the preferred content of the compound represented by the formula (L-1-5) relative to the total amount of the composition of the present invention is 1%, 5%, 10%, 13%, 15%, and 17%. , 20%. The upper limit of the preferred content is 25%, 23%, 20%, 17%, 15%, 13%, and 10% with respect to the total amount of the composition of the present invention.

In addition, the compound represented by general formula (L-1-4) and (L-1-5) is selected from the compound group represented by formula (L-1-4.1) to formula (L-1-5.3) It is preferable that it is a compound, and it is preferable that it is a compound represented by a formula (L-1-4.2) or a formula (L-1-5.2).

The lower limit of the preferred content of the compound represented by the formula (L-1-4.2) relative to the total amount of the composition of the present invention is 1%, 2%, 3%, 5%, 7%, and 10%. , 13%, 15%, 18%, and 20%. The upper limit of the preferable content is 20%, 17%, 15%, 13%, 10%, 8%, 7%, and 6% with respect to the total amount of the composition of the present invention.

Formula (L-1-1.3), formula (L-1-2.2), formula (L-1-3.1), formula (L-1-3.3), formula (L-1-3.4), formula (L-1 It is preferable to combine two or more types of compounds selected from compounds represented by -3.11) and formula (L-1-3.12), and formula (L-1-1.3), formula (L-1-2.2), formula ( It is preferable to combine two or more compounds selected from compounds represented by L-1-3.1), formula (L-1-3.3), formula (L-1-3.4) and formula (L-1-4.2), , The lower limit of the preferred content of the total content of these compounds is 1%, 2%, 3%, 5%, 7%, 10%, 13%, based on the total amount of the composition of the present invention. , 15%, 18%, 20%, 23%, 25%, 27%, 30%, 33%, 35%, the upper limit is 80, based on the total amount of the composition of the present invention %, 70%, 60%, 50%, 45%, 40%, 37%, 35%, 33%, 30%, 28%, 25%, 23% , 20%. When placing importance on the reliability of the composition, combining two or more compounds selected from compounds represented by formula (L-1-3.1), formula (L-1-3.3) and formula (L-1-3.4) It is preferable, and when the response speed of a composition is important, it is preferable to combine two or more types of compounds selected from the compound represented by Formula (L-1-1.3) and Formula (L-1-2.2).

The compound represented by the general formula (L-1) is preferably a compound selected from the group of compounds represented by the general formula (L-1-6).

(In the formula, R ^L17 and R ^L18 each independently represent a methyl group or a hydrogen atom.)

The lower limit of the preferred content of the compound represented by the formula (L-1-6) relative to the total amount of the composition of the present invention is 1%, 5%, 10%, 15%, 17%, and 20%. , 23%, 25%, 27%, 30%, and 35%. The upper limit of the preferred content is 60%, 55%, 50%, 45%, 42%, 40%, 38%, 35%, 33%, based on the total amount of the composition of the present invention. , 30%.

In addition, it is preferable that the compound represented by general formula (L-1-6) is a compound selected from the compound group represented by formula (L-1-6.1)-formula (L-1-6.3).

In order to secure a balance between response speed and reliability, the compound represented by the general formula (L-1) is preferably (L-1-1), (L-1-2) and/or (L-1-3). And (L-1-2) and/or (L-1-3) are particularly preferred.

A compound denoted by General Formula (L-2) is the following compound.

(In the formula, R ^L21 and R ^L22 each independently represent the same meaning as R ^L1 and R ^L2 in General Formula (L).)

R ^L21 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and R ^L22 is an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms, or 1-4 alkoxy groups are preferable.

The compound denoted by the general formula (L-2) may be used alone, or two or more compounds may be used in combination. Although there is no particular limitation on the kind of compound that can be combined, it is appropriately combined and used according to the required performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The kind of compound to be used is, for example, 1 type, 2 types, 3 types, 4 types, and 5 or more types as an embodiment of the present invention.

When the solubility at low temperature is important, the effect is high if the content is set a little higher, whereas, when the response speed is important, the effect is high if the content is set slightly smaller. In addition, in the case of improving the dripping mark or the firing characteristics, it is preferable to set the range of the content in the middle.

The lower limit of the preferred content of the compound represented by the formula (L-2) relative to the total amount of the composition of the present invention is 1%, 2%, 3%, 5%, 7%, and 10%. The upper limit of the preferred content is 20%, 15%, 13%, 10%, 8%, 7%, 6%, 5%, and 3% based on the total amount of the composition of the present invention. .

In addition, the compound represented by the general formula (L-2) is preferably a compound selected from the group of compounds represented by the formulas (L-2.1) to (L-2.6), and the formula (L-2.1), It is preferably a compound selected from the group of compounds represented by (L-2.3), formula (L-2.4) and formula (L-2.6), and a compound represented by formula (L-2.3) and formula (L-2.4) It is preferably a compound selected from the group.

The compound denoted by General Formula (L-3) is the following compound.

(In the formula, R ^L31 and R ^L32 each independently represent the same meaning as R ^L1 and R ^L2 in General Formula (L).)

R ^L31 and R ^L32 each independently preferably have 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 compound denoted by the general formula (L-3) may be used alone, or two or more compounds may be used in combination. Although there is no particular limitation on the kind of compound that can be combined, it is appropriately combined and used according to the required performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The kind of compound to be used is, for example, 1 type, 2 types, 3 types, 4 types, and 5 or more types as an embodiment of the present invention.

The lower limit of the preferred content of the compound represented by the formula (L-3) relative to the total amount of the composition of the present invention is 1%, 2%, 3%, 5%, 7%, and 10%. The upper limit of the preferred content is 20%, 15%, 13%, 10%, 8%, 7%, 6%, 5%, and 3% based on the total amount of the composition of the present invention. .

In the case of obtaining a high birefringence, the effect is high if the content is set a little higher. Conversely, when the high Tni is emphasized, the effect is high if the content is set a little less. In addition, in the case of improving the dripping mark or the firing characteristics, it is preferable to set the range of the content in the middle.

In addition, the compound represented by the general formula (L-3) is preferably a compound selected from the group of compounds represented by the formulas (L-3.1) to (L-3.6), and the formula (L-3.1), It is preferably a compound selected from the group of compounds represented by (L-3.3), formula (L-3.5) or formula (L-3.6), and preferably a compound represented by formula (L-3.1).

The compound denoted by the general formula (L-4) is the following compound.

(In the formula, R ^L41 and R ^L42 each independently represent the same meaning as R ^L1 and R ^L2 in General Formula (L).)

R ^L41 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and R ^L42 is an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms, or 1-4 alkoxy groups are preferable.)

The compound denoted by the general formula (L-4) may be used alone, or two or more compounds may be used in combination. Although there is no particular limitation on the kind of compound that can be combined, it is appropriately combined and used according to the required performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The kind of compound to be used is, for example, 1 type, 2 types, 3 types, 4 types, and 5 or more types as an embodiment of the present invention.

In the composition of the present invention, the content of the compound represented by the general formula (L-4) is required for solubility at low temperatures, transition temperature, electrical reliability, birefringence, process suitability, drip marks, baking, dielectric anisotropy, etc. It needs to be adjusted appropriately according to the performance being performed.

The lower limit of the preferred content of the compound represented by the formula (L-4) relative to the total amount of the composition of the present invention is 1%, 2%, 3%, 5%, 7%, 10%, 14 %, 16%, 20%, 23%, 26%, 30%, 35%, 40%. The upper limit of the preferred content of the compound represented by the formula (L-4) relative to the total amount of the composition of the present invention is 50%, 40%, 35%, 30%, 20%, 15%, 10 %, and 5%.

It is preferable that the compound represented by general formula (L-4) is, for example, a compound represented by formulas (L-4.1) to (L-4.3).

Depending on the required performance such as solubility at low temperature, transition temperature, electrical reliability, birefringence, etc., a compound represented by formula (L-4.1) may be contained, or a compound represented by formula (L-4.2) is contained. May contain both the compound represented by the formula (L-4.1) and the compound represented by the formula (L-4.2), and may be represented by the formula (L-4.1) to the formula (L-4.3) You may contain all of the compounds. The lower limit of the preferred content of the compound represented by formula (L-4.1) or formula (L-4.2) relative to the total amount of the composition of the present invention is 3%, 5%, 7%, 9%, and 11% Is, 12%, 13%, 18%, 21%, and the preferred upper limit is 45%, 40%, 35%, 30%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, and 8%.

When both the compound represented by the formula (L-4.1) and the compound represented by the formula (L-4.2) are contained, the lower limit of the preferred content of both compounds relative to the total amount of the composition of the present invention is 15%. , 19%, 24%, 30%, preferred upper limits are 45%, 40%, 35%, 30%, 25%, 23%, 20%, 18%, 15 %, and 13%.

The compound represented by general formula (L-4) is preferably a compound represented by formula (L-4.4) to formula (L-4.6), and is a compound represented by formula (L-4.4) desirable.

Depending on the required performance such as solubility at low temperature, transition temperature, electrical reliability, birefringence, etc., a compound represented by formula (L-4.4) may be contained, or a compound represented by formula (L-4.5) is contained. It may be carried out, and both of the compound represented by the formula (L-4.4) and the compound represented by the formula (L-4.5) may be contained.

The lower limit of the preferred content of the compound represented by formula (L-4.4) or formula (L-4.5) relative to the total amount of the composition of the present invention is 3%, 5%, 7%, 9%, and 11% Is, 12%, 13%, 18%, and 21%. Preferred upper limits are 45%, 40%, 35%, 30%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8% to be.

When both the compound represented by the formula (L-4.4) and the compound represented by the formula (L-4.5) are contained, the lower limit of the preferred content of both compounds relative to the total amount of the composition of the present invention is 15%. , 19%, 24%, 30%, preferred upper limits are 45%, 40%, 35%, 30%, 25%, 23%, 20%, 18%, 15 %, and 13%.

The compound represented by the general formula (L-4) is preferably a compound represented by the formula (L-4.7) to the formula (L-4.10), and in particular, the compound represented by the formula (L-4.9) is preferred. .

The compound denoted by the general formula (L-5) is the following compound.

(In the formula, R ^L51 and R ^L52 each independently represent the same meaning as R ^L1 and R ^L2 in General Formula (L).)

R ^L51 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and R ^L52 is an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms, or 1-4 alkoxy groups are preferable.

The compound denoted by the general formula (L-5) may be used alone, or two or more compounds may be used in combination. Although there is no particular limitation on the kind of compound that can be combined, it is appropriately combined and used according to the required performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The kind of compound to be used is, for example, 1 type, 2 types, 3 types, 4 types, and 5 or more types as an embodiment of the present invention.

In the composition of the present invention, the content of the compound represented by the general formula (L-5) is required for solubility at low temperature, transition temperature, electrical reliability, birefringence, process suitability, drip marks, seizure, dielectric anisotropy, etc. It needs to be adjusted appropriately according to the performance being performed.

The lower limit of the preferred content of the compound represented by the formula (L-5) relative to the total amount of the composition of the present invention is 1%, 2%, 3%, 5%, 7%, 10%, 14 %, 16%, 20%, 23%, 26%, 30%, 35%, 40%. The upper limit of the preferred content of the compound represented by the formula (L-5) relative to the total amount of the composition of the present invention is 50%, 40%, 35%, 30%, 20%, 15%, 10 %, and 5%.

The compound represented by the general formula (L-5) is preferably a compound represented by the formula (L-5.1) or the formula (L-5.2), and particularly preferably a compound represented by the formula (L-5.1). Do.

The lower limit of the preferred content of these compounds relative to the total amount of the composition of the present invention is 1%, 2%, 3%, 5%, and 7%. The upper limit of the preferable content of these compounds is 20%, 15%, 13%, 10%, and 9%.

The compound represented by the general formula (L-5) is preferably a compound represented by the formula (L-5.3) or the formula (L-5.4).

The lower limit of the preferred content of these compounds relative to the total amount of the composition of the present invention is 1%, 2%, 3%, 5%, and 7%. The upper limit of the preferable content of these compounds is 20%, 15%, 13%, 10%, and 9%.

The compound represented by the general formula (L-5) is preferably a compound selected from the group of compounds represented by the formulas (L-5.5) to (L-5.7), and in particular, the compound represented by the formula (L-5.7) It is preferably a compound.

The lower limit of the preferred content of these compounds relative to the total amount of the composition of the present invention is 1%, 2%, 3%, 5%, and 7%. The upper limit of the preferable content of these compounds is 20%, 15%, 13%, 10%, and 9%.

The compound denoted by the general formula (L-6) is the following compound.

(In the formula, R ^L61 and R ^L62 each independently represent the same meaning as R ^L1 and R ^L2 in the general formula (L), and X ^L61 and X ^L62 each independently represent a hydrogen atom or a fluorine atom. )

R ^L61 and R ^L62 are each independently preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and one of X ^L61 and X ^L62 is preferably a fluorine atom and the other is a hydrogen atom. .

The compound denoted by the general formula (L-6) may be used alone, or two or more compounds may be used in combination. Although there is no particular limitation on the kind of compound that can be combined, it is appropriately combined and used according to the required performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The kind of compound to be used is, for example, 1 type, 2 types, 3 types, 4 types, and 5 or more types as an embodiment of the present invention.

The lower limit of the preferred content of the compound represented by the formula (L-6) relative to the total amount of the composition of the present invention is 1%, 2%, 3%, 5%, 7%, 10%, 14 %, 16%, 20%, 23%, 26%, 30%, 35%, 40%. The upper limit of the preferred content of the compound represented by the formula (L-6) relative to the total amount of the composition of the present invention is 50%, 40%, 35%, 30%, 20%, 15%, 10 %, and 5%. When an emphasis is placed on increasing Δn, it is preferable to increase the content, and when an emphasis is placed on precipitation at a low temperature, the smaller content is preferable.

It is preferable that the compound represented by general formula (L-6) is a compound represented by formula (L-6.1)-formula (L-6.9).

Although there is no restriction|limiting in particular in the kind of compound which can be combined, It is preferable to contain 1 type-3 types among these compounds, and it is more preferable to contain 1 type-4 types. In addition, since the wide molecular weight distribution of the selected compound is also effective for solubility, for example, one type from the compound represented by the formula (L-6.1) or (L-6.2), the formula (L-6.4) or (L One type from the compound represented by -6.5), one type from the compound represented by the formula (L-6.6) or the formula (L-6.7), 1 type from the compound represented by the formula (L-6.8) or (L-6.9) It is preferable to select a kind of compound and to combine these appropriately. Especially, it is preferable to contain the compound represented by a formula (L-6.1), a formula (L-6.3), a formula (L-6.4), a formula (L-6.6), and a formula (L-6.9).

In addition, the compound represented by the general formula (L-6) is preferably a compound represented by the formula (L-6.10) to the formula (L-6.17), and among them, the compound represented by the formula (L-6.11). It is preferable that it is a displayed compound.

The lower limit of the preferred content of these compounds relative to the total amount of the composition of the present invention is 1%, 2%, 3%, 5%, and 7%. The upper limit of the preferable content of these compounds is 20%, 15%, 13%, 10%, and 9%.

A compound denoted by General Formula (L-7) is the following compound.

(In the formula, R ^L71 and R ^L72 each independently represent the same meaning as R ^L1 and R ^L2 in the general formula (L), and A ^L71 and A ^L72 are each independently A in the general formula (L) ^L2 and A ^L3 have the same meaning, but the hydrogen atoms on A ^L71 and A ^L72 may each independently be substituted by a fluorine atom, and Z ^L71 has the same meaning as Z ^L2 in the general formula (L), X ^L71 and X ^L72 each independently represent a fluorine atom or a hydrogen atom.)

In the formula, R ^L71 and R ^L72 are each independently an alkyl group having 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 ^L71 and A ^L72 are each Independently, 1,4-cyclohexylene group or 1,4-phenylene group is preferred, and the hydrogen atoms on A ^L71 and A ^L72 may each independently be substituted with a fluorine atom, and Z ^L71 is a single bond or COO- Is preferable, a single bond is preferable, and a hydrogen atom is preferable for X ^L71 and X ^L72 .

There is no particular limitation on the type of compound that can be combined, but it is combined according to the required performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The kind of compound to be used is, for example, one type, two types, three types, and four types as an embodiment of the present invention.

In the composition of the present invention, the content of the compound represented by the general formula (L-7) is required for solubility at low temperature, transition temperature, electrical reliability, birefringence, process suitability, drip marks, baking, dielectric anisotropy, etc. It needs to be adjusted appropriately according to the performance being performed.

The lower limit of the preferred content of the compound represented by the formula (L-7) relative to the total amount of the composition of the present invention is 1%, 2%, 3%, 5%, 7%, 10%, 14 %, 16%, and 20%. The upper limit of the preferred content of the compound represented by the formula (L-7) relative to the total amount of the composition of the present invention is 30%, 25%, 23%, 20%, 18%, 15%, 10 %, and 5%.

When an embodiment of Tni having a high composition of the present invention is desired, it is preferable to increase the content of the compound represented by the formula (L-7) slightly, and when an embodiment of low viscosity is desired, the content is decreased slightly. It is desirable.

In addition, the compound represented by the general formula (L-7) is preferably a compound represented by the formula (L-7.1) to the formula (L-7.4), and is preferably a compound represented by the formula (L-7.2). Do.

In addition, the compound represented by the general formula (L-7) is preferably a compound represented by the formula (L-7.11) to the formula (L-7.13), and is preferably a compound represented by the formula (L-7.11). Do.

In addition, a compound denoted by a general formula (L-7) is a compound denoted by a formula (L-7.21) to a formula (L-7.23). It is preferable that it is a compound represented by formula (L-7.21).

In addition, the compound represented by the general formula (L-7) is preferably a compound represented by the formula (L-7.31) to the formula (L-7.34), and the formula (L-7.31) or/and the formula (L- It is preferably a compound represented by 7.32).

In addition, the compound represented by the general formula (L-7) is preferably a compound represented by the formula (L-7.41) to the formula (L-7.44), and the formula (L-7.41) or/and the formula (L- It is preferably a compound represented by 7.42).

In addition, it is preferable that the compound represented by General Formula (L-7) is a compound represented by Formula (L-7.51)-Formula (L-7.53).

Preferred content of the sum of the compounds represented by the general formula (i), general formula (ii), general formula (N-1d), general formula (N-1) and general formula (L) with respect to the total amount of the composition of the present invention The lower limit of is 80%, 85%, 88%, 90%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, and 99% And 100%. The upper limit of the preferable content is 100%, 99%, 98%, and 95%.

The lower limit of the preferred content of the sum of the compounds represented by the general formula (i) in the neutral compound (the compound represented by the general formula (i) and the compound represented by the general formula (L)) is 2%, and 4 %, 6%, 8%, 10%, 12%, 14%, and 16%. Preferred upper limits are 30%, 25%, 20%, 18%, 16%, 14%, and 12%.

The lower limit of the preferred content of the sum of the compounds represented by the general formula (i) and general formula (L) relative to the total amount of the composition of the present invention is 5%, 10%, 15%, 20%, 25% to be. The upper limit of the preferable content is 70%, 60%, 55%, 50%, 45%, and 40%.

When the response speed is important, it is preferable to include a compound having an alkenyl group. The upper limit of the preferred content of the sum of the compounds having an alkenyl group relative to the total amount of the composition of the present invention is 95%, 90%, 85%, 80%, 75%, 70%, 65%, 60%, 55%, 50%, 45%, 40%, 35%, 30%, 25%, 20%, 15%, 10%, 5%.

When reliability is important, it is preferable to reduce the number of compounds having an alkenyl group. The upper limit of the preferred content of the sum of the compounds containing an alkenyl group relative to the total amount of the composition of the present invention is 30%, 25%, 20%, 15%, 13%, 10%, and 8%. , 5%, 3%, 2%, 1%, and preferably substantially not contained.

A liquid crystal composition for use in a liquid crystal display device is required to design an appropriate property value as a basic performance. Examples include nematic phase-isotropic liquid phase transition temperature (T _ni ), refractive index anisotropy (Δn), dielectric anisotropy (Δε), rotational viscosity (γ ₁ ), and various elastic constants (elastic constant of spread: K ₁₁ , elastic constant of torsion: K ₂₂ , the elastic constant of bending: K ₃₃ , their average value K _ave. ).

In order to represent low γ ₁ , it is preferable to contain the compound represented by the general formula (L-1), and the general formula (L-1-1), the general formula (L-1-2) and/or the general formula ( It is preferable to contain the compound represented by L-1-3).

The compound represented by the general formula (L-1-1) is preferably a compound selected from the compound group represented by the formula (L-1-1.1) to the formula (L-1-1.3), and the formula (L- It is preferably a compound represented by 1-1.2) or formula (L-1-1.3), and particularly preferably a compound represented by formula (L-1-1.3).

The compound represented by the general formula (L-1-2) is preferably a compound selected from the group of compounds represented by the formulas (L-1-2.1) to (L-1-2.4), and the formula (L- It is preferable that it is a compound represented by 1-2.2)-formula (L-1-2.4). In particular, the compound represented by the formula (L-1-2.2) is preferable because it particularly improves the response speed of the composition of the present invention.

The compound represented by the general formula (L-1-3) is preferably a compound selected from the group of compounds represented by the formulas (L-1-3.1) to (L-1-3.12), and the formula (L- It is preferable that it is a compound represented by 1-3.1), a formula (L-1-3.3), or a formula (L-1-3.4). In particular, the compound represented by the formula (L-1-3.1) is preferable because it particularly improves the response speed of the composition of the present invention.

In order to design a liquid crystal composition showing an appropriate Δn, it is preferable to contain an appropriate amount of a compound having a large Δn in addition to the compound represented by the general formula (L-1) showing a small Δn. As a genetically neutral compound showing a large ?n, it is preferable to contain a compound represented by the general formula (L-3) and/or the general formula (L-5).

The compound represented by General Formula (L-3) is preferably a compound selected from the group of compounds represented by Formulas (L-3.1) to (L-3.6), and Formulas (L-3.1) and (L It is preferably a compound selected from the group of compounds represented by -3.3), formula (L-3.5) or formula (L-3.6), and preferably a compound represented by formula (L-3.1).

The compound represented by the general formula (L-5) is preferably a compound represented by the formula (L-5.1) or the formula (L-5.2), and particularly preferably a compound represented by the formula (L-5.1). Do.

In order to design a liquid crystal composition exhibiting an appropriate Δε, it is preferable to contain an appropriate amount of a compound representing a large Δε in addition to the compound represented by the general formula (L-1) representing a small Δn. As the compound showing a large Δε, it is preferable to contain a compound represented by the general formula (N-1d) and/or the general formula (N-1), and the general formula (N-1-10) and the general formula (N-1 -11), general formula (N-1-1), general formula (N-1-2), general formula (N-1-3), general formula (N-1-4), general formula (N-1 It is preferable to contain a compound denoted by -5), general formula (N-1-18) and/or general formula (N-1-22).

The compound represented by the general formula (N-1-10) is preferably a compound selected from the compound group represented by the formula (N-1-10.1) to the formula (N-1-10.21), and the formula (N- 1-10.1) to (N-1-10.5), a compound represented by a formula (N-1-10.20) and a formula (N-1-10.21), and a formula (N-1-10.1), a formula ( N-1-10.2), the compound represented by the formula (N-1-10.20) and the formula (N-1-10.21) are preferred, and the formula (N-1-10.1) and the formula (N-1-10.2) The compound represented is preferred, and the compound represented by the formula (N-1-10.2) is preferred.

The compound represented by the general formula (N-1-11) is preferably a compound selected from the group of compounds represented by the formulas (N-1-11.1) to (N-1-11.14), and the formula (N- It is preferably a compound represented by 1-11.2), formula (N-1-11.4), formula (N-1-11.11) and (N-1-11.14).

The compound represented by the general formula (N-1-1) is preferably a compound selected from the compound group represented by the formula (N-1-1.1) to the formula (N-1-1.23), and the formula (N- It is preferably a compound represented by 1-1.1) to (N-1-1.4), and a compound represented by formula (N-1-1.1) and formula (N-1-1.3) is preferred.

The compound represented by the general formula (N-1-2) is preferably a compound selected from the compound group represented by the formula (N-1-2.1) to the formula (N-1-2.22), and the formula (N- 1-2.3) to formula (N-1-2.7), formula (N-1-2.10), formula (N-1-2.11), formula (N-1-2.13) and formula (N-1-2.20) It is preferable that it is a compound represented, and a compound represented by Formula (N-1-2.4) is preferable.

The compound represented by the general formula (N-1-3) is preferably a compound selected from the group of compounds represented by the formula (N-1-3.1) to the formula (N-1-3.21), and the formula (N- It is preferable that it is a compound represented by 1-3.1)-(N-1-3.7) and formula (N-1-3.21), and formula (N-1-3.1), formula (N-1-3.2), formula ( Compounds represented by N-1-3.3), formula (N-1-3.4) and formula (N-1-3.6) are preferred.

The compound represented by the general formula (N-1-4) is preferably a compound selected from the compound group represented by the formula (N-1-4.1) to the formula (N-1-4.14), and the formula (N- It is preferably a compound represented by 1-4.1) to (N-1-4.4), and is represented by formula (N-1-4.1), formula (N-1-4.2) and formula (N-1-4.4) Compounds are preferred.

The compound represented by the general formula (N-1-5) is preferably a compound selected from the group of compounds represented by the formula (N-1-5.1) to the formula (N-1-5.6), and the formula (N- 1-5.1), a compound represented by a formula (N-1-5.2) and a formula (N-1-5.4) are preferred.

The compound represented by the general formula (N-1-18) is preferably a compound selected from the group of compounds represented by the formulas (N-1-18.1) to (N-1-18.5), and the formula (N- It is preferably a compound represented by 1-18.1) to (N-1-11.3), and a compound represented by a formula (N-1-18.2) and a formula (N-1-18.3) is preferred.

The compound represented by the general formula (N-1-22) is preferably a compound selected from the compound group represented by the formula (N-1-22.1) to the formula (N-1-22.12), and the formula (N- It is preferable that it is a compound represented by 1-22.1)-(N-1-22.5), and a compound represented by formula (N-1-22.1)-(N-1-22.4) is preferable.

When Δn is increased, a group of compounds represented by general formula (N-1-3), general formula (N-1-4), general formula (N-1-5), and general formula (N-1-18) It is preferable to contain one type or two or more types of compounds selected from, and particularly preferably, two or more types.

It is preferable to contain two or more kinds of compounds selected from the compound group represented by General Formula (N-1-3), General Formula (N-1-4) and General Formula (N-1-18), and It is preferable to contain two or more compounds selected from the group of compounds represented by (N-1-3) and general formula (N-1-4), and the compound represented by general formula (N-1-3) It is preferable to contain two or more types.

The upper limit of the preferred content of the sum of the compounds having an alkenyl group in the compound represented by the general formula (N-1d) and the compound represented by the general formula (N-1) relative to the total amount of the composition of the present invention is 20%, It is preferably 18%, 15%, 13%, 10%, 8%, 5%, 3%, 2%, 1%, and substantially not contained.

It is preferable that the composition of the present invention does not contain a compound having a structure in which oxygen atoms such as a peracid (-CO-OO-) structure are bonded to each other in a molecule.

When the reliability and long-term stability of the composition are important, the content of the compound having a carbonyl group is preferably 5% or less, more preferably 3% or less, and 1% or less based on the total mass of the composition. It is more preferable, and it is most preferable that it does not contain substantially.

When the stability by UV irradiation is important, the content of the compound substituted by the chlorine atom is preferably 15% or less, preferably 10% or less, and 8% or less based on the total mass of the composition. It is preferable, and it is more preferable to set it as 5% or less, it is preferable to set it as 3% or less, and it is still more preferable to do not contain substantially.

It is preferable to increase the content of the compound in which all the ring structures in the molecule are 6-membered rings, and the content of the compound in which all the ring structures in the molecule are 6-membered rings is 80% or more with respect to the total mass of the composition, and 90% It is more preferable to use the above, more preferably 95% or more, and it is most preferable to constitute the composition only of compounds having substantially all 6-membered rings in the molecule.

In order to improve the tilt stability of the composition, it is preferable to increase the content of the compound in which the side chain is an alkyl group and an alkoxy group, and the content of the compound in which the side chain is an alkyl group and an alkoxy group is 85% or more with respect to the total mass of the composition , 87% or more is preferable, 90% or more is preferable, 93% or more is preferable, 95% or more is preferable, 98% or more is preferable, and substantially 100% It is more preferable to do it. Substantially 100% means 100% excluding polymerizable compounds, stabilizers and additionally incorporated impurities.

In order to suppress deterioration due to oxidation of the composition, it is preferable to reduce the content of the compound having a cyclohexenylene group as a cyclic structure, and the content of the compound having a cyclohexenylene group is 10% or less based on the total mass of the composition. It is preferable to set it as, it is preferable to set it as 8% or less, it is more preferable to set it as 5% or less, it is preferable to set it as 3% or less, and it is still more preferable to do not contain substantially.

When emphasis is placed on improving viscosity and improving Tni, it is preferable to reduce the content of the compound having a 2-methylbenzene-1,4-diyl group in the molecule, which may be substituted with halogen, and the 2-methyl The content of the compound having a benzene-1,4-diyl group in the molecule is preferably 10% or less, preferably 8% or less, more preferably 5% or less, based on the total mass of the composition. It is preferable to set it as 3% or less, and it is more preferable not to contain substantially.

In the present application, "substantially not contained" means "not contained except for unintentionally contained".

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

The average elastic constant (K _AVG ) of the liquid crystal composition used in the present invention is preferably 10 to 25, and as its lower limit, 10 is preferable, 10.5 is preferable, 11 is preferable, 11.5 is preferable, and 12 is preferable. And 12.3 is preferable, 12.5 is preferable, 12.8 is preferable, 13 is preferable, 13.3 is preferable, 13.5 is preferable, 13.8 is preferable, 14 is preferable, 14.3 is preferable, and 14.5 is preferable. And 14.8 is preferable, 15 is preferable, 15.3 is preferable, 15.5 is preferable, 15.8 is preferable, 16 is preferable, 16.3 is preferable, 16.5 is preferable, 16.8 is preferable, and 17 is preferable. And, 17.3 is preferable, 17.5 is preferable, 17.8 is preferable, 18 is preferable, and as an upper limit, 25 is preferable, 24.5 is preferable, 24 is preferable, 23.5 is preferable, and 23 is preferable. , 22.8 is preferred, 22.5 is preferred, 22.3 is preferred, 22 is preferred, 21.8 is preferred, 21.5 is preferred, 21.3 is preferred, 21 is preferred, 20.8 is preferred, 20.5 is preferred, , 20.3 is preferable, 20 is preferable, 19.8 is preferable, 19.5 is preferable, 19.3 is preferable, 19 is preferable, 18.8 is preferable, 18.5 is preferable, 18.3 is preferable, and 18 is preferable. , 17.8 is preferable, 17.5 is preferable, 17.3 is preferable, and 17 is preferable. If an emphasis on power consumption reduction is effective to suppress the amount of light of the backlight, and a liquid crystal display device is preferable to improve the optical transmittance, it is preferable to set the value of the lower bit K _AVG To do so. When emphasis is placed on improving response speed and contrast, it is desirable to set the value of K _AVG slightly higher.

The composition of the present invention may contain one or two or more polymerizable compounds in order to manufacture a liquid crystal display device such as a vertically aligned PSA mode, a vertically aligned PSVA mode, a transverse electric field type PSA mode, or a transverse electric field type PSVA mode. have.

The liquid crystal composition of the present invention is the general formula (II)

(In the formula, R ²⁰¹ , R ²⁰² , R ²⁰³ , R ²⁰⁴ , R ²⁰⁵ , R ²⁰⁶ , R ²⁰⁷ , R ²⁰⁸ , R ²⁰⁹ and R ²¹⁰ are each independently P ²¹ -S ²¹ -, even if substituted with a fluorine atom A C1-C18 alkyl group, a C1-C18 alkoxy group which may be substituted with a fluorine atom, a fluorine atom, or a hydrogen atom,

P ²¹ is each independently, formula (R-1) to formula (R-9)

(In the formula, R ¹¹ , R ¹² , R ¹³ , R ¹⁴ and R ¹⁵ each independently represent either an alkyl group having 1 to 5 carbon atoms, a fluorine atom or a hydrogen atom, and m ^r5 , m ^r7 , n ^r5 and n ^r7 each independently represent 0, 1, or 2) a polymerizable group selected from,

S ²¹ represents a single bond or an alkylene group having 1 to 15 carbon atoms, and one or two or more of -CH ₂ -in the alkylene group is -O-, -OCO- or -COO so that oxygen atoms are not directly adjacent. May be substituted with -,

n ²¹ represents 0, 1 or 2,

A ²¹ is,

(a) 1,4-cyclohexylene group (one -CH ₂ -present in this group or two or more non-adjacent -CH ₂ -s may be substituted with -O-.)

(b) a 1,4-phenylene group (one -CH= present in this group or two or more non-adjacent -CH=s may be substituted with -N=), and

(c) Naphthalene-2,6-diyl group, 1,2,3,4-tetrahydronaphthalene-2,6-diyl group or decahydronaphthalene-2,6-diyl group (naphthalene-2,6-diyl group Alternatively, one -CH= present in the 1,2,3,4-tetrahydronaphthalene-2,6-diyl group or two or more non-adjacent -CH=s may be substituted with -N=.)

Represents a group selected from the group consisting of, and the groups (a), (b) and (c) described above are each independently an alkyl group having 1 to 12 carbon atoms, an alkoxy group having 1 to 12 carbon atoms, It may be substituted with halogen, cyano group, nitro group or P ²¹ -S ²¹ -,

Having at least one or more P ²¹ -S ²¹ -in one molecule of the general formula (II),

L ²¹ is a single bond, -OCH ₂ -, -CH ₂ O-, -C ₂ H ₄ -, -OC ₂ H ₄ O-, -COO-, -OCO-, -CH=CR ^a -COO-,- CH=CR ^a -OCO-, -COO-CR ^a =CH-, -OCO-CR ^a =CH-, -(CH ₂ ) _z -COO-, -(CH ₂ ) _z -OCO-, -OCO-( CH ₂ ) _z -, -COO-(CH ₂ ) _z -, -CH=CH-, -CF ₂ O-, -OCF ₂ -or -C≡C-(wherein R ^a is each independently a hydrogen atom Or an alkyl group having 1 to 3 carbon atoms, and in the above formula, z each independently represents an integer of 1 to 4;

When a plurality of P ²¹ , S ²¹ , and A ²¹ are present, a polymerizable compound represented by each may be the same or different.) is preferable.

In the general formula (II), it is preferable to have one or more P ²¹ -S ²¹ -in one molecule of the compound represented by the general formula (II), and having 4 or less P ²¹ -S ^21- Preferably, the number of P ²¹ -S ²¹ -present in one molecule of the general formula (II) is preferably 1 or more and 4 or less, more preferably 1 or more and 3 or less, and is represented by the general formula (II). It is particularly preferable that the number of P ²¹ -S ²¹ -in the molecule of the compound to be displayed is 2 or 3.

That is, the compound represented by the general formula (II) is a structure in which at least two benzene rings and ring A ²¹ are connected as necessary, and at least one of P ²¹ -S ²¹ -in the plurality of benzene rings and ring A ²¹ From the point of having, the compound represented by the general formula (II) exhibits an action/effect as a polymerizable compound.

In the general formula (II), one or two or more selected from the group consisting of R ²⁰¹ , R ²⁰² , R ²⁰³ , R ²⁰⁴ , R ²⁰⁵ , R ²⁰⁶ , R ²⁰⁷ , R ²⁰⁸ , R ²⁰⁹ and R ²¹⁰ the P ²¹ -S ²¹ - if the is, R ^201, R ^202, R ^204, R ^207, R ²⁰⁹ or R any one or two or more kinds of the ²¹⁰ P ²¹ -S ²¹ - which is preferred, and R ²⁰¹ And R ²¹⁰ is more preferably P ²¹ -S ²¹ -.

In the general formula (II), R ²⁰¹ and R ²¹⁰ are each independently preferably P ²¹ -S ²¹ -, and in this case, R ²⁰¹ and R ²¹⁰ may be the same P ²¹ -S ²¹ -, It may be different P ²¹ -S ²¹ -.

In the general formula (II), R ²⁰¹ , R ²⁰² , R ²⁰³ , R ²⁰⁴ , R ²⁰⁵ , R ²⁰⁶ , R ²⁰⁷ , R ²⁰⁸ , R ²⁰⁹ and R ²¹⁰ are each independently, P ²¹ -S ^21- , An alkyl group having 1 to 18 carbon atoms that may be substituted with a fluorine atom, an alkoxy group having 1 to 18 carbon atoms that may be substituted with a fluorine atom, a fluorine atom, or a hydrogen atom.In this case, the alkyl group and the alkoxy group are preferred The number of carbon atoms is 1 to 16, more preferably 1 to 10, more preferably 1 to 8, even more preferably 1 to 6, even more preferably 1 to 4, particularly preferably Is 1 to 3. Further, the alkyl group and the alkoxy group may be linear or branched, but linear is particularly preferable.

In the general formula (II), R ²⁰² , R ²⁰³ , R ²⁰⁴ , R ²⁰⁵ , R ²⁰⁶ , R ²⁰⁷ , R ²⁰⁸ and R ²⁰⁹ are each independently P ²¹ -S ²¹ -, and 1 to carbon atoms It is preferably an alkyl group of 3, a fluorine atom or a hydrogen atom, more preferably P ²¹ -S ²¹ -, a fluorine atom or a hydrogen atom, and more preferably a fluorine atom or a hydrogen atom.

P ²¹ is preferably a formula (R-1), more preferably an acrylic group or a methacrylic group, and still more preferably a methacrylic group.

S ²¹ is preferably a single bond or an alkylene group having 1 to 3 carbon atoms, and more preferably a single bond.

In the general formula (II), n ²¹ is preferably 0 or 1.

In the general formula (II), A ²¹ is preferably a 1,4-phenylene group or a naphthalene-2,6-diyl group, and more preferably a 1,4-phenylene group.

In the general formula (II), L ²¹ is a single bond, -OCH ₂ -, -CH ₂ O-, -C ₂ H ₄ -, -COO-, -OCO-, -CH=CH-COO-, -CH=CH-OCO-, -COO-CH=CH-, -OCO-CH=CH-, -C ₂ H ₄ -COO-, -C ₂ H ₄ -OCO-, -OCO-C ₂ H _4- , -COO-C ₂ H ₄ -, -CH=CH-, -CF ₂ O-, -OCF ₂ -or -C≡C- is preferred.

The total content of the polymerizable compound represented by the general formula (II) is 0.01 to 5% by mass, but the lower limit of the content is preferably 0.02% by mass, preferably 0.03% by mass, preferably 0.04% by mass, and 0.05 Mass% is preferable, 0.06 mass% is preferable, 0.07 mass% is preferable, 0.08 mass% is preferable, 0.09 mass% is preferable, 0.1 mass% is preferable, 0.15 mass% is preferable, and 0.2 mass % Is preferable, 0.25 mass% is preferable, 0.3 mass% is preferable, 0.35 mass% is preferable, 0.4 mass% is preferable, 0.5 mass% is preferable, 0.55 mass% is preferable, and the upper limit of the content Silver, 4.5% by mass is preferable, 4% by mass is preferable, 3.5% by mass is preferable, 3% by mass is preferable, 2.5% by mass is preferable, 2% by mass is preferable, and 1.5% by mass is preferable. , 1 mass% is preferred, 0.95 mass% is preferred, 0.9 mass% is preferred, 0.85 mass% is preferred, 0.8 mass% is preferred, 0.75 mass% is preferred, 0.7 mass% is preferred, 0.65 mass% is preferable, 0.6 mass% is preferable, and 0.55 mass% is preferable.

The compound represented by the general formula (II) according to the present invention is preferably a polymerizable compound represented by the general formula (IV).

In the general formula (IV), R ⁷ and R ⁸ each independently represent any one of the above formulas (R-1) to (R-9), and X ¹ to X ⁸ are each independently , A trifluoromethyl group, a fluorine atom, a hydrogen atom, or an alkoxy group having 1 to 5 carbon atoms.

In the general formula (IV), R ⁷ and R ⁸ are each independently preferably a methacrylic group or an acrylic group.

The compound represented by the general formula (IV) is more preferably one or two or more selected from the group consisting of formulas (IV-11) to (IV-19), and formulas (IV-11) and It is particularly preferable that it is (IV-16) and formula (IV-17).

The compound represented by the general formula (II) according to the present invention is specifically, for example, a compound represented by the formula (XX-1) to the general formula (XX-21) is preferable, and the formula (XX-1) ~ Formula (XX-7), Formula (XX-14) ~ Formula (XX-29) are more preferable.

In formula (XX-1) to general formula (XX-29), Sp ^xx is an alkylene group having 1 to 8 carbon atoms or -O-(CH ₂ ) _s- (in the formula, s is an integer of 1 to 7 And the oxygen atom is supposed to be bonded to the ring.)

In formula (XX-1) to general formula (XX-29), the hydrogen atom in the 1,4-phenylene group is also -F, -Cl, -CF ₃ , -CH ₃ or formula (R-1) You may be substituted by any one of formula (R-15).

Moreover, as a compound represented by general formula (II), a polymeric compound represented by formula (M1)-formula (M18) is preferable, for example.

Moreover, a polymerizable compound like formula (M19)-formula (M34) is also preferable.

The hydrogen atom in the 1,4-phenylene group and the naphthalene group in Formulas (M19) to (M34) may be further substituted by -F, -Cl, -CF ₃ or -CH ₃ .

In addition, the compound represented by General Formula (II) is also preferably a polymerizable compound represented by Formulas (M35) to (M65).

In the polymerizable compound-containing liquid crystal composition according to the present invention, the content of the polymerizable compound represented by formulas (M1) to (M65) relative to the entire liquid crystal composition is 0.01 to 5% by mass, but the lower limit of the content is 0.02 Mass% is preferable, 0.03 mass% is preferable, 0.04 mass% is preferable, 0.05 mass% is preferable, 0.06 mass% is preferable, 0.07 mass% is preferable, 0.08 mass% is preferable, and 0.09 mass% % Is preferred, 0.1 mass% is preferred, 0.15 mass% is preferred, 0.2 mass% is preferred, 0.25 mass% is preferred, 0.3 mass% is preferred, 0.35 mass% is preferred, 0.4 mass% Is preferably, 0.5% by mass is preferable, 0.55% by mass is preferable, and the upper limit of the content is preferably 4.5% by mass, preferably 4% by mass, preferably 3.5% by mass, and 3% by mass is preferable, 2.5 mass% is preferable, 2 mass% is preferable, 1.5 mass% is preferable, 1 mass% is preferable, 0.95 mass% is preferable, 0.9 mass% is preferable, 0.85 mass% is preferable, and 0.8 The mass% is preferable, 0.75 mass% is preferable, 0.7 mass% is preferable, 0.65 mass% is preferable, 0.6 mass% is preferable, and 0.55 mass% is preferable.

In the case of adding a monomer to the composition of the present invention, the polymerization proceeds even when no polymerization initiator is present, but a polymerization initiator may be contained in order to accelerate polymerization. Examples of the polymerization initiator include benzoin ethers, benzophenones, acetophenones, benzyl ketals, acylphosphine oxides, and the like.

The composition in the present invention may further contain a compound represented by General Formula (Q).

(In the formula, R ^Q represents a linear alkyl group or branched chain alkyl group having 1 to 22 carbon atoms, and one or two or more CH ₂ groups in the alkyl group are -O-, -CH= so that oxygen atoms are not directly adjacent to each other. It may be substituted with CH-, -CO-, -OCO-, -COO-, -C≡C-, -CF ₂ O-, -OCF ₂ -, and the hydrogen atom in R ^Q is 4-hydroxy-3, May be substituted with a 5-di-t-butylphenyl group, M ^Q represents a trans-1,4-cyclohexylene group, 1,4-phenylene group or a single bond, trans-1,4-cyclohexylene group One of them or two non-adjacent -CH ₂ -may be substituted with -O-.)

R ^Q represents a straight chain alkyl group or branched chain alkyl group having 1 to 22 carbon atoms, and one or two or more CH ₂ groups in the alkyl group are -O-, -CH=CH-,-so that oxygen atoms are not directly adjacent to each other. Although it may be substituted with CO-, -OCO-, -COO-, -C≡C-, -CF ₂ O-, -OCF ₂ -, a straight chain alkyl group having 1 to 10 carbon atoms, a straight chain alkoxy group, and one CH ₂ A straight-chain alkyl group, a branched-chain alkyl group, a branched alkoxy group in which the group is substituted with -OCO- or -COO-, and a branched-chain alkyl group in which one CH ₂ group is substituted with -OCO- or -COO- is preferable, and has 1 to 20 carbon atoms Of a straight-chain alkyl group, a straight-chain alkyl group in which one CH ₂ group is substituted with -OCO- or -COO-, a branched-chain alkyl group, a branched alkoxy group, and a branched-chain alkyl group in which one CH ₂ group is substituted with -OCO- or -COO- desirable. M ^Q represents a trans-1,4-cyclohexylene group, a 1,4-phenylene group or a single bond, but a trans-1,4-cyclohexylene group or a 1,4-phenylene group is preferable.

As for the compound represented by general formula (Q), more specifically, the compound represented by the following general formula (Q-a)-general formula (Q-e) is preferable.

In the formula, R ^Q1 is preferably a linear alkyl group or branched alkyl group having 1 to 10 carbon atoms, R ^Q2 is preferably a linear alkyl group or branched chain alkyl group having 1 to 20 carbon atoms, and R ^Q3 is 1 carbon atom A linear alkyl group of to 8, a branched alkyl group, a linear alkoxy group or a branched alkoxy group is preferable, and L ^Q is preferably a linear alkylene group or branched chain alkylene group having 1 to 8 carbon atoms. Among the compounds represented by the general formula (Qa) to the general formula (Qe), compounds represented by the general formula (Qa), the general formula (Qc) and the general formula (Qe) are more preferable.

As a specific compound represented by general formula (Q), formulas (Q-11) to (Q-15) are particularly preferred.

In the composition of the present invention, it is preferable to contain 1 type or 2 types of compounds represented by the general formula (Q), more preferably 1 type to 5 types, and the lower limit of the preferable content is 0.0001%, 0.0002%, 0.0005%, 0.001%, 0.002%, 0.005%, 0.01%, 0.015%, 0.02%, 0.05%, 0.75%, 0.01%, the upper limit of the preferred content is 1 %, 1%, 0.9%, 0.8%, 0.7%, 0.6%, 0.5%, 0.4%, 0.3%, 0.25%, 0.2%, 0.19%, 0.18% , 0.17%, 0.16%, and 0.15%.

The liquid crystal composition of the present invention may contain at least one or more compounds represented by General Formula (I-1).

In General Formula (I-1), although R ^HS each independently represents a hydrogen atom or an alkyl group having 1 to 10 carbon atoms, it is particularly preferably a hydrogen atom. In the case of an alkyl group, it is preferably 1 to 8 carbon atoms, preferably 1 to 5 carbon atoms, preferably 1 to 3 carbon atoms, and more preferably 1 carbon atom. When multiple R ^HS exist, they may be the same or different.

M ^HS is n ^HS cases representing 1 represents an alkyl group of carbon atoms from 1 to 15, n ^HS is from 2 to 6 carbon atoms indicate the integer represents 1-15 alkylene group of 1 existing in the M ^HS At least one -CH ₂ -is -O-, -CH=CH-, -C≡C-, -CO-, -OCO-, -COO-, trans-1,4-cyclohexylene group, 1,4- Although it may be substituted with a phenylene group or a naphthalene-2,6-diyl group, considering the viscosity imparted to the liquid crystal composition and its volatility, M ^HS is preferably an alkyl group or alkylene group having 2 to 10 carbon atoms, and a carbon atom An alkyl group or an alkylene group having 2 to 8 carbon atoms is preferable, an alkyl group or an alkylene group having 4 to 8 carbon atoms is preferable, and an alkyl group or an alkylene group having 6 or 8 carbon atoms is preferable. M ^HS may be linear or branched.

n ^HS represents the integer of 1-6, but it is preferable that it is 2-4.

When n ^HS represents 1, the compound represented by the general formula (I-1) is a compound represented by the general formula (I-11), the general formula (I-12), or the general formula (I-13). desirable.

(In the formula, R ^H11 each independently represents a hydrogen atom or an alkyl group having 1 to 10 carbon atoms, and M represents an alkylene group having 1 to 13 carbon atoms.)

(In the formula, R ^H12 and R ¹¹² each independently represent a hydrogen atom or an alkyl group having 1 to 10 carbon atoms.)

(In the formula, R ^H13 and R ¹¹³ each independently represent a hydrogen atom or an alkyl group having 1 to 30 carbon atoms.)

When n ^HS represents 2, the compound represented by the general formula (I-1) is preferably a compound represented by the general formula (I-2).

(In the formula, R ^H1 and R ^H2 each independently represent a hydrogen atom or an alkyl group having 1 to 10 carbon atoms, and M represents an alkylene group having 1 to 15 carbon atoms, and one or more- CH ₂ -is -O-, -CH=CH-, -C≡C-, -CO-, -OCO-, -COO-, trans-1,4-cyclohexylene group, 1,4-phenylene group, It may be substituted with a naphthalene-2,6-diyl group.)

In General Formula (I-2), it is particularly preferable that R ^H1 and R ^H2 are hydrogen atoms. In the case of an alkyl group, it is preferably 1 to 8 carbon atoms, preferably 1 to 5 carbon atoms, preferably 1 to 3 carbon atoms, and more preferably 1 carbon atom.

In General Formula (I-2), M represents an alkylene group having 1 to 15 carbon atoms, but considering the viscosity imparted to the liquid crystal composition and its volatility, M is preferably an alkylene having 2 to 10 carbon atoms. And alkylene having 4 to 8 carbon atoms is preferable, and alkylene having 6 or 8 carbon atoms is preferable.

Specifically, a compound represented by a general formula (I-24), a general formula (I-26), and a general formula (I-28) can be mentioned. In these formulas, R ^H1 and R ^H2 are as described above.

In more detail, compounds represented by the general formula (I-24H), the general formula (I-26H) and the general formula (I-28H) can be exemplified, but bis represented by the general formula (I-28H) ( 2,2,6,6-tetramethyl-4-piperidyl)sebacate is most suitable.

Moreover, when n ^HS represents the integer of 3-6, it is preferable that the compound represented by general formula (I-1) is a compound represented by general formula (I-3). Since the compound represented by the general formula (I-3) has a high effective amine concentration, it is a compound that acts more effectively. In addition, in the compound represented by the general formula (I-1), those having a small molecular weight are adsorbed to the alignment film in the liquid crystal display element and cause uneven display. Since the compound has a large molecular weight, it is possible to prevent the occurrence of uneven display.

(In the formula, R ^H3 , R ^H4 and R ^H5 each independently represent a hydrogen atom or an alkyl group having 1 to 10 carbon atoms. n ^H1 and n ^H2 each independently represent 0 or 1. n ^H3 is 1 It represents the integer of-4. When n ^H3 is 2, 3, or 4, and multiple R ^H5 exist, they may be the same or different.)

In General Formula (I-3), it is particularly preferable that R ^H3 , R ^H4 and R ^H5 are hydrogen atoms. In the case of an alkyl group, it is preferably 1 to 8 carbon atoms, preferably 1 to 5 carbon atoms, preferably 1 to 3 carbon atoms, and more preferably 1 carbon atom.

Specifically, a compound represented by a general formula (I-31), a general formula (I-32) and a general formula (I-33) is preferable. In these formulas, R ^H3 , R ^H4 and R ^H5 are as described above.

More specifically, a compound represented by a formula (I-31H), a formula (I-31C), a formula (I-32H), and a formula (I-33H) is preferable.

In the liquid crystal composition, the compound represented by the general formula (I-1) is preferably contained in the composition as a lower limit of 0.01% or more, preferably 0.02% or more, and preferably 0.03% or more, It is preferably contained at least 0.05%, preferably at least 0.07%, preferably at least 0.1%, preferably at least 0.15%, preferably at least 0.2%, and at least 0.25% It is preferable, it is preferable to contain 0.3% or more, it is preferable to contain 0.5% or more, and it is preferable to contain 1% or more. In addition, as an upper limit, it is preferable to contain 5% or less, preferably 3% or less, preferably 1% or less, preferably 0.5% or less, preferably 0.45% or less, and 0.4 % Or less, preferably 0.35% or less, preferably 0.3% or less, preferably 0.25% or less, preferably 0.2% or less, and 0.15% or less It is preferable to contain 0.1% or less, preferably 0.07% or less, preferably 0.05% or less, and preferably 0.03% or less.

More specifically, it is preferable to contain 0.01-5 mass %, it is preferable that it is 0.01-0.3 mass %, it is more preferable that it is 0.02-0.35 mass %, It is especially preferable that it is 0.05-0.25 mass %. In more detail, when the suppression of precipitation at low temperature is emphasized, the content is preferably 0.01 to 0.1% by mass.

Further, the liquid crystal composition of the present invention may further contain an antioxidant and/or a photostabilizer. More specifically, the compounds represented by the following (III-1) to (III-38) are preferable.

(In the formula, n represents the integer of 0-20.)

The composition of the present invention is a compound represented by the general formula (Q), a compound represented by the general formula (I-1), an antioxidant represented by the general formula (III-1) to (III-38) and/or a light eye A compound selected from tablets may be combined and contained. In the liquid crystal composition, the content of these additives is preferably 0.01% or more, preferably 0.02% or more, preferably 0.03% or more, and preferably 0.05% or more, as a lower limit value in the composition. And, preferably 0.07% or more, preferably 0.1% or more, preferably 0.15% or more, preferably 0.2% or more, preferably 0.25% or more, and 0.3% or more It is preferable to contain, it is preferable to contain 0.5% or more, and it is preferable to contain 1% or more. In addition, as an upper limit, it is preferable to contain 5% or less, preferably 3% or less, preferably 1% or less, preferably 0.5% or less, preferably 0.45% or less, and 0.4 % Or less, preferably 0.35% or less, preferably 0.3% or less, preferably 0.25% or less, preferably 0.2% or less, and 0.15% or less It is preferable to contain 0.1% or less, preferably 0.07% or less, preferably 0.05% or less, and preferably 0.03% or less.

More specifically, it is preferable to contain 0.01-5 mass %, it is preferable that it is 0.01-0.3 mass %, it is more preferable that it is 0.02-0.35 mass %, It is especially preferable that it is 0.05-0.25 mass %. In more detail, when the suppression of precipitation at low temperature is emphasized, the content is preferably 0.01 to 0.1% by mass.

In general, various parameters calculated from the physical property values of the liquid crystal composition are used as a method of expressing the characteristics of the liquid crystal display device. They include γ ₁ /K ₃₃ or γ ₁ /K _{ave as} a parameter governing the response speed, K ₁₁ /K _{33 as} a parameter governing the steepness of the electro-optical effect, and |K ₃₃ / as a parameter governing the driving voltage. Δε| Or |K _ave /Δε| And K _ave , which strongly dominates the contrast. The liquid crystal composition of the present invention has both high-speed response, low driving voltage, good low-temperature storage stability, high transmittance, and high contrast. In addition, K _ave in this specification is defined as the average value of K ₁₁ and K ₃₃ .

Therefore, the parameters which dominate the response speed of the vertically aligned liquid crystal display element γ ₁ / K ₃₃ was 10.0mPa · s · pN ^-1 or less, and is preferably, 9.8mPa · s ^-1 · pN or less is preferable, 9.5mPa · s·pN ^-1 or less is preferable, 9.2 mPa·s·pN ^-1 or less is preferable, 9.0 mPa·s·pN ^-1 or less is preferable, 8.8 mPa·s·pN ^-1 or less is preferable, and 8.6 mPa · s · pN ^-1 or less are preferred, 8.4mPa · s · and the pN ^-1 or less preferably, 8.2mPa · s · pN ^-1 or less are preferred, 8.0mPa · s ^-1 · pN or less is preferred, and , 7.8 mPa·s·pN ^-1 or less is preferable, 7.6 mPa·s·pN ^-1 or less is preferable, 7.4 mPa·s·pN ^-1 or less is preferable, and 7.2 mPa·s·pN ^-1 or less is Preferably, 7.0 mPa·s·pN ^-1 or less is preferable, 6.8 mPa·s·pN ^-1 or less is preferable, and 6.6 mPa·s·pN ^-1 or less is particularly preferable.

Which is a parameter that controls the response time of a homogeneous alignment liquid crystal display element γ ₁ / K _ave is 10.0mPa · s · pN ^-1 or less is preferable, and 9.8mPa · s · pN ^-1 or less, and preferably, 9.5mPa · s · pN ^-1 or less is preferable, 9.2 mPa·s·pN ^-1 or less is preferable, 9.0 mPa·s·pN ^-1 or less is preferable, 8.8 mPa·s·pN ^-1 or less is preferable, and 8.6 mPa· s·pN ^-1 or less is preferable, 8.4 mPa·s·pN ^-1 or less is preferable, 8.2 mPa·s·pN ^-1 or less is preferable, 8.0 mPa·s·pN ^-1 or less is preferable, and 7.8 mPa · s · pN ^-1 or less are preferred, 7.6mPa · s · and the pN ^-1 or less preferably, 7.4mPa · s · pN ^-1 or less are preferred, 7.2mPa · s ^-1 · pN or less is preferred, and , 7.0 mPa·s·pN ^-1 or less is preferable, 6.8 mPa·s·pN ^-1 or less is preferable, and 6.6 mPa·s·pN ^-1 or less is particularly preferable.

In a vertically aligned liquid crystal display element, K ₁₁ /K _{33, which} is a parameter governing the steepness of the electro-optical effect, is preferably 1.30 or less, preferably 1.25 or less, preferably 1.20 or less, preferably 1.18 or less, and 1.15 or less Is preferable, 1.12 or less is preferable, 1.10 or less is preferable, 1.08 or less is preferable, 1.06 or less is preferable, 1.04 or less is preferable, 1.02 or less is preferable, and 1.00 or less is especially preferable.

|K ₃₃ /Δε|, which is a parameter governing the driving voltage of the vertically aligned liquid crystal display element, is preferably 6.0 pN or less, preferably 5.9 pN or less, preferably 5.8 pN or less, 5.7 pN or less, and 5.6 pN The following are preferable, 5.5 pN or less is preferable, 5.4 pN or less is preferable, 5.3 pN or less is preferable, 5.2 pN or less is preferable, 5.1 pN or less is preferable, 5.0 pN or less is preferable, 4.9 pN or less Is preferred, and 4.8 pN or less is particularly preferred.

|K _ave /Δε|, which is a parameter governing the driving voltage of a horizontally aligned liquid crystal display element, is preferably 6.0 pN or less, preferably 5.9 pN or less, preferably 5.8 pN or less, 5.7 pN or less, and 5.6 pN The following are preferable, 5.5 pN or less is preferable, 5.4 pN or less is preferable, 5.3 pN or less is preferable, 5.2 pN or less is preferable, 5.1 pN or less is preferable, 5.0 pN or less is preferable, 4.9 pN or less Is preferred, and 4.8 pN or less is particularly preferred.

K _{ave, which} is a parameter governing the contrast of a liquid crystal display element, is preferably 10.0 pN or more, preferably 10.5 pN or more, preferably 11.0 pN or more, preferably 11.5 pN or more, 12.0 pN or more, and 12.5 pN. More preferably, 13.0 pN or more is preferable, 13.0 pN or more is preferable, 14.0 pN or more is preferable, 14.2 pN or more is preferable, 14.4 pN or more is preferable, 14.6 pN or more is preferable, 14.8 pN or more This is preferable, 15.0 pN or more is preferable, 15.2 pN or more is preferable, 15.4 pN or more is preferable, 15.6 pN or more is preferable, 15.8 pN or more is preferable, 16.0 pN or more is preferable, and 16.2 pN or more is Preferably, 16.4 pN or more is preferable, 16.6 pN or more is preferable, 16.8 pN or more is preferable, 17.0 pN or more is preferable, 17.2 pN or more is preferable, 17.4 pN or more is preferable, and 17.6 pN or more is preferable. And 17.8 pN or more is preferable, and 18.0 pN or more is particularly preferable.

In particular, in the case of a horizontal alignment liquid crystal display device that is disadvantageous in contrast, 16.0 pN or more is preferable, 16.2 pN or more is preferable, 16.4 pN or more is preferable, 16.6 pN or more is preferable, 16.8 pN or more is preferable, and 17.0 pN or more. This is preferable, 17.2 pN or more is preferable, 17.4 pN or more is preferable, 17.6 pN or more is preferable, 17.8 pN or more is preferable, and 18.0 pN or more is particularly preferable.

The composition containing the polymerizable compound of the present invention is used in a liquid crystal display device in which the polymerizable compound contained therein is polymerized by irradiation with ultraviolet rays to give a liquid crystal alignment ability, and to control the amount of transmitted light by using the birefringence of the composition. .

The liquid crystal display device using the composition of the present invention is useful in both high-speed response and suppression of display defects, and is particularly useful for active matrix driving liquid crystal display devices, and is useful in VA mode, PSVA mode, PSA mode, IPS mode, FFS mode. Alternatively, it can be applied to a liquid crystal display device for ECB mode.

In addition, in the manufacturing process of a liquid crystal display device by the ODF method, it is necessary to drop the optimal liquid crystal injection amount depending on the size of the liquid crystal display device, but the liquid crystal composition of the present invention is, for example, dropping generated during liquid crystal dropping. Since there is little influence on sudden pressure change or impact in the device, and it is possible to stably drop liquid crystal over a long period of time, the yield of the liquid crystal display element can be maintained high. In particular, small liquid crystal display devices that are widely used in smartphones, which are popular in recent years, are difficult to control the deviation from the optimum value within a certain range because the optimal liquid crystal injection amount is small, but by using the liquid crystal composition of the present invention, Even in a small liquid crystal display element, a stable discharge amount of a liquid crystal material can be realized.

[Example]

Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples. In addition, "%" in the compositions of the following examples and comparative examples means "mass%".

In Examples, the measured properties are as follows.

T _ni : Nematic phase-isotropic liquid phase transition temperature (℃)

Δn: refractive index anisotropy at 293K

Δε: dielectric anisotropy at 293K

γ ₁ : rotational viscosity at 293K (mPa·s)

K ₁₁ : Spreading elastic constant (pN) at 293K

K ₂₂ : Torsion elastic constant (pN) at 293K

K ₃₃ : Elastic constant of bending at 293K (pN)

K _ave. : Average elastic constant (pN) at 293K

In addition, the following abbreviations are used for the description of the compound in Examples.

(Ring structure)

(Side chain structure)

(However, n in the table is a natural number.)

(Connection structure)

(However, n in the table is a natural number.)

(Criteria)

In the case of evaluating the characteristics as a horizontally aligned liquid crystal display element, the prepared liquid crystal composition is injected into a comb-shaped ITO cell that has been subjected to a rubbing treatment by applying a polyimide alignment film that induces homogeneous alignment, respectively, by a vacuum injection method. A switching (IPS) liquid crystal display device was obtained. Electro-optical properties were measured for these obtained IPS liquid crystal display elements, and evaluations such as driving voltage, response speed, transmittance, and contrast were performed. The results were judged in three stages: "○: a level without a problem", "Δ: a slightly insufficient and unacceptable level", and "x: an unacceptable level". When evaluating a liquid crystal composition in which Δn is less than 0.105, a cell with a cell gap of 2.8 μm was used, and when evaluating a liquid crystal composition in which Δn is 0.105 or more, a cell with a cell gap of 2.6 μm was used.

In the case of evaluating the characteristics as a vertically aligned liquid crystal display device, a vertically aligned (VA) liquid crystal display device was prepared by injecting the prepared liquid crystal composition into a cell with ITO coated with a polyimide alignment film that induces homeotropic alignment, respectively, by a vacuum injection method. Got it. Electro-optical properties were measured for these obtained VA liquid crystal display elements, and evaluations such as driving voltage, response speed, transmittance, and contrast were performed. The results were judged in three stages: "○: a level without a problem", "Δ: a slightly insufficient and unacceptable level", and "x: an unacceptable level". When evaluating a liquid crystal composition in which Δn is less than 0.105, a cell with a cell gap of 3.3 μm was used, and when evaluating a liquid crystal composition in which Δn is 0.105 or more, a cell with a cell gap of 3.0 μm was used.

In the case of evaluating a liquid crystal display device that regulates the alignment of liquid crystal molecules by photopolymerization by adding a polymerizable compound to a liquid crystal composition, typified by polymer stabilized vertical alignment (PSVA), In this case, the liquid crystal display device is exposed to about 10 J with a UV lamp with an intensity of about 100 mW/cm ^-2 (365 nm) while applying a rectangular wave of 10 V and 100 Hz, and also by exposing about 100 J with the voltage off. A stabilized vertical alignment (PSVA) liquid crystal display device was obtained. In the case of an IPS or FFS liquid crystal display device, a polymer stabilized horizontal alignment (PS-IPS or PS-FFS) liquid crystal display device was obtained by exposing about 100 J as it is without applying a voltage. Electro-optical properties were measured for these obtained liquid crystal display elements, and evaluations such as driving voltage, response speed, transmittance, and contrast were performed. The results were judged in three stages: "○: a level without a problem", "Δ: a slightly insufficient and unacceptable level", and "x: an unacceptable level".

(Comparative Example 1 and Example 1)

The liquid crystal composition of LC-A as a comparative example and LC-1 as an example were prepared, and the physical property values were measured. The configuration of the liquid crystal composition and the results of its physical properties are shown below.

LC-1 (Example 1) and LC-A (Comparative Example 1) are parameters governing the response speed, γ ₁ /K _ave. Is small enough, and |K _ave. It turned out that /Δε| is a sufficiently low liquid crystal composition. On the other hand, it was found that Δn was significantly reduced in LC-A compared to LC-1.

Next, a horizontal alignment liquid crystal display element and a vertical alignment liquid crystal display element were obtained using these liquid crystal compositions, and it was confirmed that all of these liquid crystal display elements exhibit high-speed response and low driving voltage. However, a display element made using LC-A has a lower transmittance than a liquid crystal display element made using LC-1, and accordingly, a remarkable decrease in contrast was observed.

From the above, it was found that the liquid crystal composition of the present invention is an excellent liquid crystal composition that can achieve both high-speed response, low driving voltage, high transmittance, and high contrast.

(Comparative Example 2 and Example 2)

The liquid crystal composition of LC-B as a comparative example and LC-2 as an example were prepared, and the physical property values were measured. The configuration of the liquid crystal composition and the results of its physical properties are shown below.

LC-2 (Example 2) and LC-B (Comparative Example 2) were |K _ave. It turned out that /Δε| is a sufficiently low liquid crystal composition. On the other hand, compared to LC-2, LC-B is a parameter governing the driving voltage, response speed and contrast, K _ave. Is small, the parameter that governs the response speed, γ ₁ /K _ave. I could see that is getting bigger.

Next, a horizontal alignment liquid crystal display element and a vertical alignment liquid crystal display element were obtained using these liquid crystal compositions, and it was confirmed that all of these liquid crystal display elements exhibit a low driving voltage. However, it was found that the liquid crystal display device prepared by using LC-B has a slow response speed and low contrast compared to the liquid crystal display device created by using the LC-2.

From the above, it was found that the liquid crystal composition of the present invention is an excellent liquid crystal composition that can achieve both high-speed response, low driving voltage, high transmittance, and high contrast.

(Examples 3, 4 and 5)

As an example, liquid crystal compositions of LC-3, LC-4 and LC-5 were prepared, and the physical property values were measured. The configuration of the liquid crystal composition and the results of its physical properties are shown below.

From the above, it was found that the liquid crystal composition of the present invention is an excellent liquid crystal composition that can achieve both high-speed response, low driving voltage, high transmittance, and high contrast in a liquid crystal display device.

(Examples 6, 7 and 8)

As an example, liquid crystal compositions of LC-6, LC-7 and LC-8 were prepared, and the physical property values were measured. The configuration of the liquid crystal composition and the results of its physical properties are shown below.

From the above, it was found that the liquid crystal composition of the present invention is an excellent liquid crystal composition that can achieve both high-speed response, low driving voltage, high transmittance, and high contrast in a liquid crystal display device.

(Example 9 to Example 40)

To the prepared liquid crystal compositions LC-1 to LC-8, a polymerizable compound represented by XX-2, XX-5, XX-15 and M65 as a polymerizable compound was added, and the polymerizable compound-containing liquid crystal composition MLC-1 to MLC-32 (Examples 9-40) was prepared.

The configuration of the obtained polymerizable compound-containing liquid crystal composition is shown below.

After obtaining a horizontal alignment liquid crystal display element and a vertical alignment liquid crystal display element using these polymerizable compound-containing liquid crystal compositions, a polymer stabilized liquid crystal display element was obtained by UV treatment. It was confirmed that all of these polymer stabilized liquid crystal display devices exhibited the same or higher characteristics as those of the liquid crystal display devices prepared in Examples 1 to 8.

From the above, it was found that the liquid crystal composition of the present invention is an excellent liquid crystal composition that can achieve both high-speed response, low driving voltage, high transmittance, and high contrast even in a polymer liquid crystal display device.

Claims (12)

Equation (i)

It contains the compound represented by, and further general formula (N-1d)

(In the formula, R ^Nd11 and R ^Nd12 each independently represent an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent -CH ₂ ^-s in the alkyl group are each independently -CH=CH-, -C≡C-, -O-, -CO-, -COO- or -OCO- may be substituted,
n ^Nd11 represents 1, 2 or 3.)
And general formula (N-1)

(In the formula, R ^N11 and R ^N12 each independently represent an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent -CH ₂ -s in the alkyl group are each independently -CH=CH-, -C≡C-, -O-, -CO-, -COO- or -OCO- may be substituted,
n ^N11 and n ^N12 each independently represent 0, 1, 2 or 3, n ^N11 + n ^N12 represents 1, 2 or 3,
A ^N11 and A ^N12 are each independently,
(a) 1,4-cyclohexylene group (one -CH ₂ -present in this group or two or more non-adjacent -CH ₂ -s may be substituted with -O-),
(b) a 1,4-phenylene group (one -CH= present in this group or two or more non-adjacent -CH=s may be substituted with -N=), and
(c) Naphthalene-2,6-diyl group, 1,2,3,4-tetrahydronaphthalene-2,6-diyl group or decahydronaphthalene-2,6-diyl group (naphthalene-2,6-diyl group Alternatively, one -CH= present in the 1,2,3,4-tetrahydronaphthalene-2,6-diyl group or two or more non-adjacent -CH=s may be substituted with -N=.)
Represents a group selected from the group consisting of, and the groups (a), (b) and (c) are each independently an alkyl group (one -CH ₂ -present in this group or two or more not adjacent -CH ₂ - is optionally substituted with -O-), an alkenyl group (the group 1 -CH ₂ present in the - at least two are not adjacent, or -CH ₂ - is optionally substituted by -O-. ), may be substituted with a cyano group, a fluorine atom or a chlorine atom,
Z ^N11 and Z ^N12 are each independently a single bond, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, -OCF ₂ -, -CF ₂ O-, -CH=NN=CH-, -CH=CH-, -CF=CF- or -C≡C-,
When a plurality of A ^N11 and/or A ^N12 are present, they may be the same or different, and when a plurality of Z ^N11 and/or Z ^N12 are present, they may be the same or different, but the general formula (N-1 The compound represented by) excludes the compound represented by the general formula (N-1d).)
A liquid crystal composition containing one or two or more compounds selected from the compound group represented by. The method according to claim 1,
As a compound represented by general formula (N-1), general formula (N-1c)

(Wherein, R ^N11 and R ^N12 represents the same meaning as R ^N11 and R ^N12 in the formula (N-1), n ^Nc11 represents 0 or 1.)
A liquid crystal composition containing a compound represented by. The method according to claim 1 or 2,
As a compound represented by general formula (N-1), general formula (N-1e)

( ^Wherein , R ^N11 and R ^N12 represent the same meaning as R ^N11 and R ^N12 in General Formula (N-1), n ^Ne11 represents 1 or 2, and A ^Ne11 represents trans-1,4-cyclo ^{Represents a} hexylene group or a 1,4-phenylene group, and Z ^Ne11 represents a single bond or ethylene, at least one representing ethylene.)
A liquid crystal composition containing a compound represented by. The method according to any one of claims 1 to 3,
As a compound represented by general formula (N-1), general formula (N-1b)

(Wherein, R ^N11 and R ^N12 represents the same meaning as R ^N11 and R ^N12 in the formula (N-1), n ^Nb11 represents 1 or 2.)
A liquid crystal composition containing a compound represented by. The method according to any one of claims 1 to 4,
A liquid crystal composition containing a compound represented by General Formula (N-1d). The method according to any one of claims 1 to 5,
As a compound represented by general formula (N-1), general formula (N-1g)

( ^Wherein , R ^N11 and R ^N12 represent the same meaning as R ^N11 and R ^N12 in the general formula (N-1), n ^Ng11 represents 1 or 2, A ^Ng11 represents trans-1,4-cyclo It represents a hexylene group, a 1,4-cyclohexenylene group, or a 1,4-phenylene group, but at least one represents a 1,4-cyclohexenylene group.)
A liquid crystal composition containing a compound represented by. The method according to any one of claims 1 to 6,
In addition, general formula (L)

(In the formula, R ^L1 and R ^L2 each independently represent an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent -CH ₂ -s in the alkyl group are each independently -CH=CH-, May be substituted by -C≡C-, -O-, -CO-, -COO- or -OCO-, and A ^L1 , A ^L2 and A ^L3 are each independently,
(a) 1,4-cyclohexylene group (one -CH ₂ -present in this group or two or more non-adjacent -CH ₂ -s may be substituted with -O-),
(b) a 1,4-phenylene group (one -CH= present in this group or two or more non-adjacent -CH=s may be substituted with -N=), and
(c) Naphthalene-2,6-diyl group, 1,2,3,4-tetrahydronaphthalene-2,6-diyl group or decahydronaphthalene-2,6-diyl group (naphthalene-2,6-diyl group Alternatively, one -CH= present in the 1,2,3,4-tetrahydronaphthalene-2,6-diyl group or two or more non-adjacent -CH=s may be substituted with -N=.)
Represents a group selected from the group consisting of, and the groups (a), (b), and (c) are each independently an alkyl group (one -CH ₂ -present in this group or two or more not adjacent -CH ₂ - is optionally substituted with -O-), an alkenyl group (the group 1 -CH ₂ present in the - at least two are not adjacent, or -CH ₂ - is optionally substituted by -O-. ), may be substituted with a cyano group, a fluorine atom or a chlorine atom,
Z ^L1 and Z ^L2 are each independently 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-,
n ^L1 represents 0, 1, 2 or 3,
When multiple A ^L2 exists, they may be the same or different, and when multiple Z ^L2 exist, they may be the same or different.)
A liquid crystal composition containing 1 type or 2 or more types of compounds represented by. The method according to any one of claims 1 to 7,
A liquid crystal composition further containing a polymerizable compound. The method of claim 8,
The polymerizable compound is general formula (II)

(In the formula, R ²⁰¹ , R ²⁰² , R ²⁰³ , R ²⁰⁴ , R ²⁰⁵ , R ²⁰⁶ , R ²⁰⁷ , R ²⁰⁸ , R ²⁰⁹ and R ²¹⁰ are each independently P ²¹ -S ²¹ -, even if substituted with a fluorine atom A C1-C18 alkyl group, a C1-C18 alkoxy group which may be substituted with a fluorine atom, a fluorine atom, or a hydrogen atom,
P ²¹ is each independently, formula (R-1) to formula (R-9)

(In the formula, R ¹¹ , R ¹² , R ¹³ , R ¹⁴ and R ¹⁵ each independently represent either an alkyl group having 1 to 5 carbon atoms, a fluorine atom or a hydrogen atom, and m ^r5 , m ^r7 , n ^r5 and n ^r7 each independently represent a polymerizable group selected from 0, 1, or 2),
S ²¹ represents a single bond or an alkylene group having 1 to 15 carbon atoms, and one or two or more -CH ₂ -in the alkylene group is -O-, -OCO-, or -COO so that oxygen atoms are not directly adjacent. May be substituted with -,
n ²¹ represents 0, 1 or 2,
A ²¹ is,
(a) 1,4-cyclohexylene group (one -CH ₂ -present in this group or two or more non-adjacent -CH ₂ -s may be substituted with -O-.)
(b) a 1,4-phenylene group (one -CH= present in this group or two or more non-adjacent -CH=s may be substituted with -N=), and
(c) Naphthalene-2,6-diyl group, 1,2,3,4-tetrahydronaphthalene-2,6-diyl group or decahydronaphthalene-2,6-diyl group (naphthalene-2,6-diyl group Alternatively, one -CH= present in the 1,2,3,4-tetrahydronaphthalene-2,6-diyl group or two or more non-adjacent -CH=s may be substituted with -N=.)
Represents a group selected from the group consisting of, and the groups (a), (b) and (c) are each independently an alkyl group having 1 to 12 carbon atoms, an alkoxy group having 1 to 12 carbon atoms, May be substituted with halogen, cyano group, nitro group or P ²¹ -S ²¹ -,
Has at least one or more P ²¹ -S ²¹ -in one molecule of the general formula (II),
L ²¹ is a single bond, -OCH ₂ -, -CH ₂ O-, -C ₂ H ₄ -, -OC ₂ H ₄ O-, -COO-, -OCO-, -CH=CR ^a -COO-,- CH=CR ^a -OCO-, -COO-CR ^a =CH-, -OCO-CR ^a =CH-, -(CH ₂ ) _z -COO-, -(CH ₂ ) _z -OCO-, -OCO-( CH ₂ ) _z -, -COO-(CH ₂ ) _z -, -CH=CH-, -CF ₂ O-, -OCF ₂ -or -C≡C-(wherein R ^a is each independently a hydrogen atom Or an alkyl group having 1 to 3 carbon atoms, and in the formula, z each independently represents an integer of 1 to 4.)
Represented by, a liquid crystal composition. A liquid crystal display device using the liquid crystal composition according to any one of claims 1 to 9. A vertical alignment type liquid crystal display device using the liquid crystal composition according to any one of claims 1 to 9. A horizontal alignment type liquid crystal display element using the liquid crystal composition according to any one of claims 1 to 9.