JP2019203132A - Liquid crystal display element - Google Patents

Abstract

To provide: a liquid crystal composition which is improved in the response speed and the contrast ratio while satisfying various properties required for a liquid crystal composition; and a liquid crystal display element that employs the same.SOLUTION: Provided is a liquid crystal composition comprising a compound represented by general formula (i) and one or more types of compounds selected from the group consisting of compounds represented by general formulas (N-1d) and (N-1). Also provided is a liquid crystal display element employing such a composition. Such a composition is particularly useful as an n-type liquid crystal composition comprising an n-type compound having a negative dielectric constant anisotropy.SELECTED DRAWING: None

Description

  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 electric appliances for home use, industrial measuring instruments, automobile panels, mobile phones, smartphones, notebook PCs, tablet PCs, televisions, etc., including watches and calculators. Typical liquid crystal display methods include TN (twisted nematic), STN (super twisted nematic), GH (guest / host), IPS (in-plane switching), and FFS (fringe field switching). OCB (optical compensation birefringence) type, ECB (voltage controlled birefringence) type, VA (vertical alignment) type, CSH (color super homeotropic) type, FLC (ferroelectric liquid crystal) and the like. Examples of the driving method include static driving, multiplex driving, simple matrix method, active matrix (AM) method driven by TFT (thin film transistor), TFD (thin film diode), and the like. In these display methods, a liquid crystal composition (n-type liquid crystal composition) having a negative dielectric anisotropy (Δε) is used for IPS type, FFS type, ECB type, VA type, CSH type, and the like. It is known to exhibit advantageous properties.

  Typical display systems using n-type liquid crystal compositions are VA type and PSA (Polymer Sustained Alignment) type or PSVA (Polymer Stabilized Vertical Alignment) type in which the orientation is controlled by polymerizing a polymerizable compound in the liquid crystal phase. Vertical alignment methods, and horizontal alignment methods represented by IPS and FFS types. The vertical alignment method is characterized by a wide viewing angle, high transmittance, high contrast, and fast response speed, and is mainly used for large display elements such as TVs and monitors. On the other hand, the horizontal alignment method is used in mobile devices such as smartphones and tablet PCs from the viewpoint of wide viewing angle, high transmittance, low power consumption, and optimality with touch panels, and further adopted in liquid crystal televisions. Is also progressing.

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

  In this liquid crystal composition, liquid crystal compounds (C) and (D) are used as the liquid crystal compound having Δε of approximately 0. However, in a liquid crystal composition that requires a high-speed response such as a liquid crystal television, the liquid crystal composition has a sufficiently low viscosity. It has not been realized.

  On the other hand, although a liquid crystal composition using the liquid crystal compound (E) has already been disclosed, a liquid crystal composition having a small refractive index anisotropy (Δn) in combination with the liquid crystal compound (D) (see Patent Document 2). In addition, a liquid crystal composition to which a liquid crystal compound (F) is added for improving the response speed has been introduced (see Patent Document 3).

  In addition, a liquid crystal composition using the liquid crystal compound (G) and the liquid crystal compound (F) has already been disclosed (see Patent Document 4), but a further faster response speed has been demanded.

Further, the liquid crystal compound (I) having a large Δn and a large elastic constant (K ₃₃ ) of bending.

Although a liquid crystal composition (see Patent Document 5) that combines these is disclosed, a faster response speed and a higher voltage holding ratio (VHR) have been demanded.

  From the above, all liquid crystal compositions are required to satisfy both a high response speed required for a liquid crystal display element and a high VHR at a higher level.

  Patent Document 6 discloses that the response speed of a homeotropic liquid crystal cell is improved by using a liquid crystal material having a large index represented by (Expression 1). However, the disclosed liquid crystal material does not exhibit sufficient performance.

_{(Wherein, K 33} is the elastic constant, [Delta] n is the refractive index anisotropy, .gamma.1 represents rotational viscosity.)
Further, in Non-Patent Document 1, it is known that the response speed of the liquid crystal material is expressed by the following equation regardless of the driving method.

Here, τ _off is the response speed when the voltage application state is changed to the voltage non-application 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 understood that the reduction of γ ₁ and the increase of k are universally effective in reducing the response speed.

  Next, since the front contrast ratio (hereinafter referred to as contrast) in the liquid crystal display device has a finite value (hereinafter referred to as black luminance) in the black display, the luminance in the white display determined by the effective transmittance of the liquid crystal panel. It is defined as a value obtained by dividing luminance (hereinafter, white luminance) by black luminance. Therefore, the contrast can be increased by increasing the white luminance as much as possible and / or by setting the black luminance to a low value. In general, reducing the black luminance greatly contributes.

  It is known that the liquid crystal material undergoes thermal motion and thus light scattering occurs and the contrast is lowered by increasing the black luminance. The factor that increases the black luminance here is light leakage in the front direction of the liquid crystal display (perpendicular to the liquid crystal layer). This effect is generally greater in the horizontal alignment mode than in the vertical alignment mode.

  In Patent Document 7 and Non-Patent Document 2, the following formula is proposed for light leakage caused by the liquid crystal layer, and it is confirmed experimentally.

Here, I in the formula is the light leakage of the liquid crystal layer (transmittance is observed when placed orthogonally polarizing plates) intensity, S _lc scattering index, [Delta] n is the refractive index anisotropy of the liquid crystal material, n _e the extraordinary refractive index, n _o is the ordinary refractive index, d is the thickness of the liquid crystal layer, K is means an average elastic constant _can be expressed as _{(K 11 + K 22 + K} 33) / 3. Here, K ₁₁ is an elastic constant of spreading, K ₂₂ is an elastic constant of twist, and K ₃₃ is an elastic constant of bending. Since these [Delta] n, n _e, n _o and d is substantially fixed in the panel design, the liquid crystal composition, [Delta] n, n _e, while satisfying n _o (required to a value of going to [Delta] n × d.) , K is required to be increased, and by achieving this, the black luminance of the liquid crystal display element can be lowered 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, and excellent low-temperature storage stability is essential. Furthermore, the 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. It has been required to achieve both a fast response speed and high contrast.

JP-A-8-104869 European Patent Application No. 0474402 JP 2006-037054 A JP 2001-354967 A JP 2017-52960 A JP 2006-301643 A Japanese Patent No. 4682376

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

  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 the various characteristics required for the liquid crystal composition, and also to provide a liquid crystal display device using the same. That is.

  The present inventor has studied the various liquid crystal compounds and various chemical substances, found that the problems can be solved by selecting and adjusting the content thereof, and completed the present invention. .

  The liquid crystal composition of the present invention has excellent display characteristics with improved response speed and contrast ratio while satisfying various characteristics required for the liquid crystal composition. In particular, excellent characteristics are exhibited by using 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 a VA type, an FFS type, or an IPS type. This liquid crystal display element is suitable for a mobile phone, a smartphone, a notebook PC, a tablet PC, an in-vehicle LCD, a PID (Public Information Display), a TV, a monitor, or the like.

  Hereinafter, unless otherwise specified,% means mass%.

  The composition of this invention contains the compound represented by Formula (i), and also 1 type or 2 types chosen from the compound group represented by General formula (N-1d) and General formula (N-1) Contains the above compounds.

(In the formula, R ^Nd11 and R ^Nd12 each independently represent an alkyl group having 1 to 8 carbon atoms, and one or non-adjacent two or more —CH ₂ — in the alkyl group are each independently -CH = CH-, -C≡C-, -O-, -CO-, -COO- or -OCO-
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 — in the alkyl group are each independently selected. -CH = CH-, -C≡C-, -O-, -CO-, -COO- or -OCO-
n ^N11 and n ^N12 each independently represent 0, 1, 2, or 3, while 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 — may be replaced by —O—),
(B) a 1,4-phenylene group (one —CH═ present in the group or two or more non-adjacent —CH═ may be replaced by —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 or 1,2 , 3,4-tetrahydronaphthalene-2,6-diyl group, one —CH═ or two or more non-adjacent —CH═ may be replaced by —N═.
The group (a), the group (b) and the group (c) are each independently an alkyl group (one —CH ₂ — present in this group or adjacent to each other). Two or more —CH ₂ — not present may be replaced by —O—), an alkenyl group (one —CH ₂ — present in the group or two or more —CH 2 not adjacent to each other). _2- may be replaced with -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═N—N═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 are the same or different. However, the compound represented by the general formula (N-1d) is excluded. )
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 preferable. The upper limit of the 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.

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

  Only 1 type may be used for the compound represented by general formula (N-1d), but you may use it in combination of 2 or more type. Three or four or more types can be used in combination.

  The compound represented by the formula (i) with respect to the total amount of the composition of the present invention, the compound represented by the general formula (N-1d) when contained, and the general formula (N-1) contained. The lower limit of the preferable content of the compound represented 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%.

  The compound represented by 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 non-adjacent two or more —CH ₂ — in the alkyl group are each independently -CH = CH-, -C≡C-, -O-, -CO-, -COO- or -OCO-
n ^Nd11 represents 1, 2 or 3. )
As for the compound represented by general formula (N-1d), only 1 type may be used, but 2 or more types may be used.

In the general formula (N-1d), R ^Nd11 represents 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 alkenyl having 2 to 8 carbon atoms. An oxy group is preferable, 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 preferable, and a carbon atom An alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms is more preferable, an alkyl group having 2 to 5 carbon atoms or an alkenyl group having 2 to 3 carbon atoms is more preferable, and an alkenyl group having 3 carbon atoms. A group (propenyl group) is particularly preferred. A linear alkyl group having 1 to 5 carbon atoms, a linear alkoxy group having 1 to 4 carbon atoms, and a linear alkenyl group having 2 to 5 carbon atoms are preferable. In order to stabilize the nematic phase, the total of carbon atoms and oxygen atoms, if present, is preferably 5 or less, and is preferably linear.

  Particularly preferred are an ethyl group and a 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, 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 preferable, and 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, and an alkenyl group having 3 carbon atoms (propenyl group) is particularly preferred. . A linear alkyl group having 1 to 5 carbon atoms, a linear alkoxy group having 1 to 4 carbon atoms, and a linear alkenyl group having 2 to 5 carbon atoms are preferable. In order to stabilize the nematic phase, the total of carbon atoms and oxygen atoms, if present, is preferably 5 or less, and is preferably linear.

  Particularly preferred are a methoxy group and an ethoxy group.

n ^Nd11 is preferably 1 or 2, and preferably contains both a compound in which n ^Nd11 is 1 and a compound in which n ^Nd11 is 2.

n ^Nd11 is 1 or 2 compounds, but from the viewpoint of improving the nematic phase lower limit temperature, it is preferable to use 2 types, and when 2 types are used, R ^Nd11 is used. The same substituent is preferred.

n ^Nd11 is 1 or 2 compounds, but from the viewpoint of improving the nematic phase lower limit temperature, it is preferable to use 2 compounds, and when using 2 compounds, R ^Nd12 is used. The same substituent is preferred.

In the case where both a compound in which n ^Nd11 is 1 and a compound in which n ^Nd11 is 2 are used, it is preferable to use a larger number of compounds in which n ^Nd11 is 2.

  The compound represented by the general formula (N-1d) is preferably a compound represented by the compound represented by the general formula (N-1-10) or the compound represented by the general formula (N-1-11). .

  The compound represented by the 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 preferably an ethoxy group, a propoxy group, or a butoxy group.

  Although the compound represented by general formula (N-1-10) can also be used independently, it can also be used in combination of 2 or more compounds. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence. The kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.

When emphasizing the improvement of Δε, it is preferable to set the content higher. When emphasizing the solubility at low temperature, setting the content higher is more effective. When emphasizing _TNI , the content is high. Setting to a higher value is more effective. Furthermore, when improving dripping marks and image sticking characteristics, it is preferable to set the content range in the middle.

  The lower limit of the preferable content of the compound represented by the formula (N-1-10) 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 preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, and 13%.

  Furthermore, the compound represented by the general formula (N-1-10) is a compound selected from the group of compounds represented by the formula (N-1-10.1) to the formula (N-1-10.21). It is preferable to be represented by formulas (N-1-10.1) to (N-1-10.5), formula (N-1-10.20), and formula (N-1-10.21). It is preferable that it is a compound, Formula (N-1-10.1), Formula (N-1-10.2), Formula (N-1-10.20), and Formula (N-1-10.21) The compound represented by Formula (N-1-10.1) and the compound represented by Formula (N-1-10.2) is preferable, and the compound represented by Formula (N-1-10.2) is preferable. Are preferred.

  The 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 single Can be used in combination or can be used in combination, 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%, 15%. The upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %.

  The compound represented by the 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).)
^RN1111 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.

  Although the compound represented by general formula (N-1-11) can also be used independently, it can also be used in combination of 2 or more compounds. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence. The kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.

When emphasizing the improvement of Δε, it is preferable to set the content higher. When emphasizing the solubility at low temperature, setting the content lower is more effective, and when emphasizing _TNI , the content. Setting to a higher value is more effective. Furthermore, when improving dripping marks and image sticking characteristics, it is preferable to set the content range in the middle.

  The lower limit of the preferable content of the compound represented by the formula (N-1-11) 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 preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, and 13%.

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

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

  Formula (N-1-10.1), Formula (N-1-10.2), Formula (N-11.2), Formula (N-1-11.4), Formula (N-1- It is preferable to use 3 to 6 compounds selected from the compounds represented by 11.11) and the formula (N-1-11.14), and the formula (N-1-10.1) and the formula (N- 1-1.2) and a combination of compounds represented by formula (N-1-11.4) are preferably used, and formula (N-1-10.1) and formula (N-1-10.2) are preferably used. ), A combination of compounds represented by the formula (N-1-11.2) and the formula (N-1-11.4) is preferably used, and the formula (N-1-10.2), the formula (N -11.11) and a combination of compounds represented by formula (N-1-11.14) are preferably used.

As for the compound represented by general formula (N-1), only 1 type may be used, but 2 or more types may be used. The compound represented by the general formula (N-1) corresponds to a dielectrically negative compound (the sign of Δε is negative and the absolute value is greater than 2).
The compound represented 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 — in the alkyl group are each independently selected. -CH = CH-, -C≡C-, -O-, -CO-, -COO- or -OCO-
n ^N11 and n ^N12 represent 0, 1, 2, or 3, while n ^N11 + n ^N12 represents 1, 2, or 3,
A ^N11 and A ^N12 each independently represent (a) a 1,4-cyclohexylene group (one —CH ₂ — present in this group or two or more —CH ₂ — not adjacent to each other represents —O And (b) a 1,4-phenylene group (one —CH═ present in the group or two or more —CH═ not adjacent to each other) is replaced with —N═. May be.)
(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 or One —CH═ present in the 1,2,3,4-tetrahydronaphthalene-2,6-diyl group or two or more non-adjacent —CH═ may be replaced by —N═. )
The group (a), the group (b) and the group (c) are each independently an alkyl group (one —CH ₂ — present in this group or adjacent to each other). Two or more —CH ₂ — that are not present may be replaced by —O—), an alkenyl group (one —CH ₂ — present in this group, or two or more —CH 2 not adjacent to each other). _2- may be replaced with -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═N—N═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 are the same or different. However, the compound represented by the general formula (N-1) excludes the compound represented by the general formula (N-1d). )
The compound represented by the general formula (N-1) is preferably a compound having a negative Δε and an absolute value larger 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 An alkenyloxy group having 2 to 8 carbon atoms is preferable, 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 2 to 5 carbon atoms. An alkenyloxy 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, and an alkyl group having 2 to 5 carbon atoms or an alkenyl group having 2 to 3 carbon atoms is further preferred. An alkenyl group having 3 carbon atoms (propenyl group) is particularly preferable.

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

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

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

A ^N11 and A ^N12 are preferably aromatic when it is required to independently increase Δn, and are preferably aliphatic to improve the response speed, 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- It preferably represents a diyl group, decahydronaphthalene-2,6-diyl group or 1,2,3,4-tetrahydronaphthalene-2,6-diyl group, and more preferably represents the following structure:

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

Z ^N11 and ^{Z N12} are each _{independently -CH 2 O -, - CF 2} O -, - CH 2 CH 2 -, - CF 2 CF 2 - or preferably a single bond, _-CH 2 O-, —CH ₂ CH ₂ — or a single bond is more preferable, and —CH ₂ O— or a single bond is particularly preferable.

n ^N11 + n ^N12 is preferably 1 or 2, a combination in which n ^N11 is 1 and n ^N12 is 0, a combination in which n ^N11 is 2 and n ^N12 is 0, n ^N11 is 1 and n ^N12 is 1 A certain combination is preferred in which n ^N11 is 2 and n ^N12 is 1.

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

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

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

  In the case where a composition having a low response speed and a high response speed is required, the lower limit value is preferably low and the upper limit value is preferably low. Furthermore, when the composition of the present invention keeps Tni high and a composition having good temperature stability is required, the above lower limit value is preferably low and the upper limit value is preferably low. 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 value is increased and the upper limit value is high.

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

(In the formula, R ^N11 and R ^N12 represent the same meaning as R ^N11 and R ^N12 in formula (N-1), n ^Na11 represents 0 or 1, n ^Nb11 represents 1 or 2, and n ^Nc11 represents ^Represents 0 or 1, n ^Ne11 represents 1 or 2, n ^Nf11 represents 1 or 2, n ^Ng11 represents 1 or 2, A ^Ne11 represents a trans-1,4-cyclohexylene group or 1,4 ^{-Represents a} phenylene group, A ^Ng11 represents a trans-1,4-cyclohexylene group, a 1,4-cyclohexenylene group or a 1,4-phenylene group, but at least one is a 1,4-cyclohexenylene group. Z ^{Ne 11} represents a single bond or ethylene, but at least one represents ethylene.)
More specifically, the compound represented by the general formula (N-1) is a compound selected from the compound group represented by the general formulas (N-1-1) to (N-1-21). preferable.

  The compound represented 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).)
^RN111 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. ^RN112 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 or a butoxy group.

    Although the compound represented by general formula (N-1-1) can also be used independently, it can also be used in combination of 2 or more compounds. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence. The kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.

It is preferable to set a higher content in the case of emphasizing improved [Delta] [epsilon], to emphasize the solubility at low temperature highly effective when larger amount to set the content, when importance is attached to T _NI content Setting to a small value is highly effective. Furthermore, when improving dripping marks and image sticking characteristics, it is preferable to set the content range in the middle.

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

  Furthermore, the compound represented by the general formula (N-1-1) is a compound selected from the group of compounds represented by the formula (N-1-1.1) to the formula (N-1-1.23). It is preferable that it is a compound represented by Formula (N-1-1.1) to (N-1-1.4), and Formula (N-1-1.1) and Formula (N The compound represented by -1-1.3) is preferable.

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

  The compound represented by 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).)
^RN121 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. ^RN122 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 a methyl group, a propyl group, a methoxy group, an ethoxy group, or a propoxy group is preferable. preferable.

    Although the compound represented by general formula (N-1-2) can also be used independently, it can also be used in combination of 2 or more compounds. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence. The kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.

When emphasizing the improvement of Δε, it is preferable to set the content higher. When emphasizing the solubility at low temperature, it is more effective to set the content lower. When emphasizing T _NI , the content is preferable. Setting a large number of is highly effective. Furthermore, when improving dripping marks and image sticking characteristics, it is preferable to set the content range in the middle.

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

Furthermore, the compound represented by the general formula (N-1-2) is a compound selected from the compound group represented by the formula (N-1-2.1) to the formula (N-1-2.22). It is preferable that the formula (N-1-2.3) to the formula (N-1-2.7), the formula (N-1-2.10), the formula (N-1-2.11), the formula It is preferable that it is a compound represented by (N-1-2.13) and a formula (N-1-2.20), and when importance is attached to the improvement of Δε, the formula (N-1-2.3) is preferably a compound represented by the formula (N-1-2.7) _from when emphasizing improvements in _{T NI} formula (N-1-2.10), formula (N-1-2.11) And a compound represented by the formula (N-1-2.13), and when emphasizing improvement in response speed, the compound represented by the formula (N-1-2.20) Is preferred.

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

  The compound represented by the 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).)
^RN131 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. ^RN132 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. .

  Although the compound represented by general formula (N-1-3) can also be used independently, it can also be used in combination of 2 or more compounds. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence. The kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.

It is preferable to set a higher content in the case of emphasizing improved [Delta] [epsilon], to emphasize the solubility at low temperature highly effective when larger amount to set the content, when importance is attached to T _NI content Highly effective when set to. Furthermore, when improving dripping marks and image sticking characteristics, it is preferable to set the content range in the middle.

  The lower limit of the preferable content of the compound represented by the formula (N-1-3) 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 preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, and 13%.

  Furthermore, the compound represented by the general formula (N-1-3) is a compound selected from the group of compounds represented by the formula (N-1-3.1) to the formula (N-1-3.21). It is preferable that it is a compound represented by Formulas (N-1-3.1) to (N-1-3.7) and Formula (N-1-3.21), and Formula (N -1-3.1), Formula (N-1-3.2), Formula (N-1-3.3), Formula (N-1-3.4), and 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) are singly used. Can be used in combination or in combination, but the combination of formula (N-1-3.1) and formula (N-1-3.2), formula (N-1-3.3) ), A formula (N-1-3.4), and a combination of two or three selected from formula (N-1-3.6) are preferred. 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 5%, 10%, 13%, 15%, 17%, 20% %. The upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, and 13%.

  The compound represented by the general formula (N-1-4) is the following compound.

^{(Wherein, R N141} and ^{R N142} each independently represents the same meaning as ^{R N11} and ^{R N12} in the general formula (N).)
Independently R ^N141 and ^{R N142} are each an alkyl group having 1 to 5 carbon atoms, preferably an alkenyl group or an alkoxy group having 1 to 4 carbon atoms carbon atoms 4-5, methyl group, propyl group, ethoxy Group or butoxy group is preferred.

  Although the compound represented by general formula (N-1-4) can also be used independently, it can also be used in combination of 2 or more compounds. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence. The kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.

It is preferable to set a higher content in the case of emphasizing improved [Delta] [epsilon], to emphasize the solubility at low temperature highly effective when larger amount to set the content, when importance is attached to T _NI content Setting to a small value is highly effective. Furthermore, when improving dripping marks and image sticking characteristics, it is preferable to set the content range in the middle.

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

  Furthermore, the compound represented by the general formula (N-1-4) is a compound selected from the group of compounds represented by the formula (N-1-4.1) to the formula (N-1-4.14). It is preferable that it is a compound represented by Formula (N-1-4.1) to (N-1-4.4), and Formula (N-1-4.1) and Formula (N -1-4.2) and compounds represented by formula (N-1-4.4) are preferred.

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

  The compound represented by 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 preferably an ethyl group, a propyl group, or a butyl group. Is preferred.

  Although the compound represented by general formula (N-1-5) can also be used independently, it can also be used in combination of 2 or more compounds. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence. The kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.

When emphasizing the improvement of Δε, it is preferable to set the content higher. When emphasizing the solubility at low temperature, it is more effective to set the content lower. When emphasizing T _NI , the content is preferable. Setting a large number of is highly effective. Furthermore, when improving dripping marks and image sticking characteristics, it is preferable to set the content range in the middle.

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

  Furthermore, the compound represented by the general formula (N-1-5) is a compound selected from the compound group represented by the formula (N-1-5.1) to the formula (N-1-5.6). It is preferable that the compound represented by Formula (N-1-5.1), Formula (N-1-5.2), and Formula (N-1-5.4) is preferable.

  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. However, 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 5%, 8%, 10%, 13%, 15%, 17% and 20%. The upper limit of the preferable content is 35%, 33%, 30%, 28%, 25%, 23%, and 20% with respect to the total amount of the composition of the present invention. %, 18%, 15% and 13%.

  The compound represented by the 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).)
^RN1121 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. ^RN1122 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 represented by general formula (N-1-12) can also be used independently, it can also be used in combination of 2 or more compounds. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence. The kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.

It is preferable to set a higher content in the case of emphasizing improved [Delta] [epsilon], to emphasize the solubility at low temperature highly effective when larger amount to set the content, when importance is attached to T _NI content Highly effective when set to. Furthermore, when improving dripping marks and image sticking characteristics, it is preferable to set the content range in the middle.

  The lower limit of the preferable content of the compound represented by the formula (N-1-12) 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 preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, and 13%.

  The compound represented by the 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).)
^RN1131 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 preferably an ethoxy group, a propoxy group, or a butoxy group.

  Although the compound represented by general formula (N-1-13) can also be used independently, it can also be used in combination of 2 or more compounds. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence. The kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.

It is preferable to set a higher content in the case of emphasizing improved [Delta] [epsilon], to emphasize the solubility at low temperature highly effective when larger amount to set the content, when importance is attached to T _NI content Highly effective when set to. Furthermore, when improving dripping marks and image sticking characteristics, it is preferable to set the content range in the middle.

  The lower limit of the preferable content of the compound represented by the formula (N-1-13) 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 preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, and 13%.

  The compound represented by the 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 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.

  Although the compound represented by general formula (N-1-14) can also be used independently, it can also be used in combination of 2 or more compounds. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence. The kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.

It is preferable to set a higher content in the case of emphasizing improved [Delta] [epsilon], to emphasize the solubility at low temperature highly effective when larger amount to set the content, when importance is attached to T _NI content Highly effective when set to. Furthermore, when improving dripping marks and image sticking characteristics, it is preferable to set the content range in the middle.

  The lower limit of the preferable content of the compound represented by the formula (N-1-14) 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 preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, and 13%.

  The compound represented by the 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).)
^RN1151 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. ^RN1152 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 represented by general formula (N-1-15) can also be used independently, it can also be used in combination of 2 or more compounds. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence. The kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.

It is preferable to set a higher content in the case of emphasizing improved [Delta] [epsilon], to emphasize the solubility at low temperature highly effective when larger amount to set the content, when importance is attached to T _NI content Highly effective when set to. Furthermore, when improving dripping marks and image sticking characteristics, it is preferable to set the content range in the middle.

  The lower limit of the preferable content of the compound represented by the formula (N-1-15) 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 preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, and 13%.

  The compound represented by the general formula (N-1-16) is the following compound.

(In the formula, R ^N1161 and R ^N1162 each independently represent the same meaning as R ^N11 and R ^N12 in General 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 represented by general formula (N-1-16) can also be used independently, it can also be used in combination of 2 or more compounds. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence. The kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.

It is preferable to set a higher content in the case of emphasizing improved [Delta] [epsilon], to emphasize the solubility at low temperature highly effective when larger amount to set the content, when importance is attached to T _NI content Highly effective when set to. Furthermore, when improving dripping marks and image sticking characteristics, it is preferable to set the content range in the middle.

  The lower limit of the preferable content of the compound represented by the formula (N-1-16) 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 preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, and 13%.

  The compound represented by the 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)).
^RN1171 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. ^RN1172 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 represented by general formula (N-1-17) can also be used independently, it can also be used in combination of 2 or more compounds. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence. The kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.

It is preferable to set a higher content in the case of emphasizing improved [Delta] [epsilon], to emphasize the solubility at low temperature highly effective when larger amount to set the content, when importance is attached to T _NI content Highly effective when set to. Furthermore, when improving dripping marks and image sticking characteristics, it is preferable to set the content range in the middle.

  The lower limit of the preferable content of the compound represented by the formula (N-1-17) 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 preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, and 13%.

  The compound represented by the general formula (N-1-18) is the following compound.

( ^Wherein , R ^N1181 and R ^N1182 each independently represent the same meaning as R ^N11 and R ^N12 in General Formula (N)).
^RN1181 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. ^RN1182 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 represented by general formula (N-1-18) can also be used independently, it can also be used in combination of 2 or more compounds. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence. The kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.

It is preferable to set a higher content in the case of emphasizing improved [Delta] [epsilon], to emphasize the solubility at low temperature highly effective when larger amount to set the content, when importance is attached to T _NI content Highly effective when set to. Furthermore, when improving dripping marks and image sticking characteristics, it is preferable to set the content range in the middle.

  The lower limit of the preferable content of the compound represented by the formula (N-1-18) 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 preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, and 13%.

  Furthermore, the compound represented by the general formula (N-1-18) is a compound selected from the group of compounds represented by the formula (N-1-18.1) to the formula (N-1-18.5). It is preferable that it is a compound represented by Formula (N-18.1) to (N-1-11.3), and Formula (N-1-18.2) and Formula (N The compound represented by 1-18.3) is preferable.

  The compound represented 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 formula (N)).
R ^N1201 and R ^N1202 are each independently 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.

  Although the compound represented by general formula (N-1-20) can also be used independently, it can also be used in combination of 2 or more compounds. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence. The kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.

It is preferable to set a higher content in the case of emphasizing improved [Delta] [epsilon], to emphasize the solubility at low temperature highly effective when larger amount to set the content, when importance is attached to T _NI content Highly effective when set to. Furthermore, when improving dripping marks and image sticking characteristics, it is preferable to set the content range in the middle.

  The lower limit of the preferable content of the compound represented by the formula (N-1-20) 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 preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, and 13%.

  The compound represented by the 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 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.

  Although the compound represented by general formula (N-1-21) can also be used independently, it can also be used in combination of 2 or more compounds. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence. The kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.

It is preferable to set a higher content in the case of emphasizing improved [Delta] [epsilon], to emphasize the solubility at low temperature highly effective when larger amount to set the content, when importance is attached to T _NI content Highly effective when set to. Furthermore, when improving dripping marks and image sticking characteristics, it is preferable to set the content range in the middle.

  The lower limit of the preferable content of the compound represented by the formula (N-1-21) 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 preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, and 13%.

  The compound represented by general formula (N-1-22) is the following compound.

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

  Although the compound represented by general formula (N-1-22) can also be used independently, it can also be used in combination of 2 or more compounds. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence. The kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.

It is preferable to set a higher content in the case of emphasizing improved [Delta] [epsilon], to emphasize the solubility at low temperature highly effective when larger amount to set the content, when importance is attached to T _NI content Highly effective when set to. Furthermore, when improving dripping marks and image sticking characteristics, it is preferable to set the content range in the middle.

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

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

The liquid crystal composition of the present invention preferably contains one or more compounds represented by formula (L).
The compound represented by the general formula (L) corresponds to a dielectrically neutral compound (Δε value is −2 to 2).

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

  Although the compound represented by general formula (L) may be used independently, it can also be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to desired properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence. The kind of the compound used is, for example, one kind as one embodiment of the present invention. Alternatively, in another embodiment of the present invention, there are two types, three types, four types, five types, six types, seven types, eight types, nine types, 10 types, More than types.

  In the composition of the present invention, the content of the compound represented by the general formula (L) is low-temperature solubility, transition temperature, electrical reliability, birefringence, process compatibility, dripping marks, image sticking, It is necessary to appropriately adjust according to required performance such as dielectric anisotropy.

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

  The lower limit of the preferable content of the compound represented by the general formula (L) with respect 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%.

  The lower limit of the preferable content of the compound represented by the general formula (i) and the general formula (L) with respect to the total amount of the composition of the present invention is 1%, 10%, and 20%. 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%, and 25%.

  When a composition having a low viscosity and a high response speed is required, the lower limit value is high and the upper limit value is preferably high. Furthermore, when the composition of the present invention maintains a high Tni and requires a composition having good temperature stability, the above lower limit value is preferably high and the upper limit value is preferably high. Further, 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 value is lowered and the upper limit value is low.

When importance is attached to reliability, R ^L1 and R ^L2 are preferably both alkyl groups, and when importance is placed on reducing the volatility of the compound, it is preferably an alkoxy group, and importance is placed on viscosity reduction. In this case, at least one is preferably an alkenyl group.

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

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

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

n ^L1 is preferably 0 when importance is attached to the response speed, 2 or 3 is preferred for improving the upper limit temperature of the nematic phase, and 1 is preferred for balancing these. In order to satisfy the properties required for the composition, it is preferable to combine compounds having different values.

A ^L1 , A ^L2, and A ^L3 are preferably aromatic when it is required to increase Δn, and are preferably aliphatic for improving the response speed, and are each independently 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 -It preferably represents a diyl group or a 1,2,3,4-tetrahydronaphthalene-2,6-diyl group, more preferably represents the following structure,

More preferably, it represents 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 the molecule.

  The compound represented by the general formula (L) is preferably a compound selected from the group of compounds represented by the general formulas (L-1) to (L-7).

  The compound represented by 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 the 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 a linear alkenyl group having 2 to 5 carbon atoms. .

  Although the compound represented by general formula (L-1) can also be used independently, it can also be used in combination of 2 or more compounds. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence. The kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.

  The lower limit of the preferable 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 preferable content is 40%, 35%, 33%, 30%, and 25% with respect to the total amount of the composition of the present invention.

  When a composition having a low viscosity and a high response speed is required, the lower limit value is high and the upper limit value is preferably high. Furthermore, when the composition of the present invention requires a high Tni and a composition having good temperature stability, it is preferable that the lower limit value is moderate and the upper limit value is moderate. 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. To improve the viewing angle characteristics, it is not preferable to increase the upper limit value.

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

(Wherein R ^L12 represents the same meaning as in general formula (L-1).)
The compound represented by the general formula (L-1-1) is a compound selected from the group of compounds represented by the formula (L-1-1.1) to the formula (L-1-1.3). Is preferable, and is preferably a compound represented by Formula (L-1-1.2) or Formula (L-1-1.3), and particularly represented by Formula (L-1-1.3). It is preferable that it is a compound.

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

  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).

(Wherein R ^L12 represents the same meaning as in general formula (L-1).)
The lower limit of the preferable content of the compound represented by the formula (L-1-2) with respect to the total amount of the composition of the present invention is 1%, 5%, 10%, 15% 17%, 20%, 23%, 25%, 27%, 30%, 35%. The upper limit of the preferable content is 60%, 55%, 50%, 45%, 42%, 40%, and 38% with respect to the total amount of the composition of the present invention. %, 35%, 33%, and 30%.

  Furthermore, the compound represented by the general formula (L-1-2) is a compound selected from the group of compounds represented by the formula (L-1-2.1) to the formula (L-1-2.4). It is preferable that it is a compound represented by Formula (L-1-2.2) to Formula (L-1-2.4). In particular, the compound represented by the formula (L-1-2.2) is preferable because the response speed of the composition of the present invention is particularly improved. Moreover, when calculating | requiring Tni higher than a response speed, it is preferable to use the compound represented by a formula (L-1-2.3) or a formula (L-1-2.4). In order to improve the solubility at low temperature, the content of the compound represented by the formula (L-1-2.3) and the formula (L-1-2.4) is not preferably 30% or more.

  The lower limit of the preferable content of the compound represented by the formula (L-1-2.2) with respect 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 preferable content is 60%, 55%, 50%, 45%, 43%, 40%, and 38% with respect to the total amount of the composition of the present invention. %, 35%, 32%, 30%, 27%, 25%, and 22%.

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

  The compound represented by General Formula (L-1) is preferably a compound selected from the group of compounds represented by 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 a linear alkenyl group having 2 to 5 carbon atoms. .

The lower limit of the preferable content of the compound represented by the formula (L-1-3) with respect to the total amount of the composition of the present invention is 1%, 5%, 10%, 13% 15%, 17%, 20%, 23%, 25%, 30%. The upper limit of the preferable content is 60%, 55%, 50%, 45%, 40%, 37%, and 35% with respect to the total amount of the composition of the present invention. %, 33%, 30%, 27%, 25%, 23%, 23%, 20%, 17%, 15%, 13%, 10% %.
Furthermore, the compound represented by the general formula (L-1-3) is a compound selected from the compound group represented by the formula (L-1-3.1) to the formula (L-1-3.12). Preferably, it is a compound represented by the formula (L-1-3.1), the formula (L-1-3.3) or the formula (L-1-3.4). In particular, the compound represented by the formula (L-1-3.1) is preferable because the response speed of the composition of the present invention is particularly improved. Moreover, when calculating | requiring Tni higher than a response speed, Formula (L-1-3.3), Formula (L-1-3.4), Formula (L-1-3.11), and Formula (L- It is preferable to use a compound represented by 1-3.12). Sum of compounds represented by formula (L-1-3.3), formula (L-1-3.4), formula (L-1-3.11) and formula (L-1-3.12) The content of is not preferably 20% or more in order to improve the solubility at low temperatures.

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

  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 a linear alkenyl group having 2 to 5 carbon atoms. .

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

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

  Furthermore, the compounds represented by the general formulas (L-1-4) and (L-1-5) are represented by the formulas (L-1-4.1) to (L-1-5.3). It is preferable that it is a compound chosen from the compound group which is said, and it is preferable that it is a compound represented by Formula (L-1-4.2) or Formula (L-1-5.2).

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

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), two or more compounds selected from the compounds represented by formula (L-1-3.11) and formula (L-1-3.12) are preferably combined. -1.3), formula (L-1-2.2), formula (L-1-3.1), formula (L-1-3.3), formula (L-1-3.4) and It is preferable to combine two or more compounds selected from the compounds represented by formula (L-1-4.2), and the lower limit of the preferable content of the total content of these compounds is the composition of the present invention. 1%, 2%, 3%, 5%, 7%, 10%, 13%, 15%, 18% of the total amount 20%, 23%, 5%, 27%, 30%, 33%, 35%, and the upper limit is 80% and 70% with respect to the total amount of the composition of the present invention, 60%, 50%, 45%, 40%, 37%, 35%, 33%, 30%, 28%, 25%, 23% and 20%. When emphasizing the reliability of the composition, compounds represented by formula (L-1-3.1), formula (L-1-3.3) and formula (L-1-3.4)) It is preferable to combine two or more compounds selected from the group consisting of formulas (L-1-1.3) and (L-1-2.2) when importance is attached to the response speed of the composition. It is preferable to combine two or more compounds selected from the following compounds.
The compound represented by the general formula (L-1) is preferably a compound selected from the compound group 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 preferable content of the compound represented by the formula (L-1-6) with respect to the total amount of the composition of the present invention is 1%, 5%, 10%, 15% 17%, 20%, 23%, 25%, 27%, 30%, 35%. The upper limit of the preferable content is 60%, 55%, 50%, 45%, 42%, 40%, and 38% with respect to the total amount of the composition of the present invention. %, 35%, 33%, and 30%.

  Furthermore, the compound represented by the general formula (L-1-6) is a compound selected from the group of compounds represented by the formula (L-1-6.1) to the formula (L-1-6.3). Preferably there is.

  In order to ensure a balance between response speed and reliability, the compound represented by the general formula (L-1) is (L-1-1), (L-1-2) and / or (L-1-3). It is preferable that (L-1-2) and / or (L-1-3) are particularly preferable.

  The compound represented 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 the 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 a carbon atom. The alkoxy group of number 1-4 is preferable.

    Although the compound represented by general formula (L-2) can also be used independently, it can also be used in combination of 2 or more compounds. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence. The kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.

  When emphasizing solubility at low temperatures, the effect is high when the content is set to be large. On the other hand, when the response speed is important, the effect is high when the content is set low. Furthermore, when improving dripping marks and image sticking characteristics, it is preferable to set the content range in the middle.

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

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

  The compound represented 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 are each independently 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.

  Although the compound represented by general formula (L-3) can also be used independently, it can also be used in combination of 2 or more compounds. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence. The kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.

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

  When a high birefringence is obtained, the effect is high when the content is set to be large. On the other hand, when high Tni is emphasized, the effect is high when the content is set low. Furthermore, when improving dripping marks and image sticking characteristics, it is preferable to set the content range in the middle.

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

  The compound represented by 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 a carbon atom. The alkoxy group of number 1-4 is preferable. )
Although the compound represented by general formula (L-4) can also be used independently, it can also be used in combination of 2 or more compounds. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence. The kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.

  In the composition of the present invention, the content of the compound represented by the general formula (L-4) is low-temperature solubility, transition temperature, electrical reliability, birefringence, process compatibility, dripping marks, It is necessary to adjust appropriately according to required performance such as image sticking and dielectric anisotropy.

  The lower limit of the preferable content of the compound represented by the formula (L-4) with respect 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 preferable content of the compound represented by the formula (L-4) with respect to the total amount of the composition of the present invention is 50%, 40%, 35%, and 30%. 20%, 15%, 10%, 5%.

  The compound represented by the general formula (L-4) is preferably, for example, a compound represented by the formula (L-4.1) to the formula (L-4.3).

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

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

  The compound represented by General Formula (L-4) is preferably, for example, a compound represented by Formula (L-4.4) to Formula (L-4.6), and Formula (L-4.4). It is preferable that it is a compound represented by this.

  Depending on required performance such as solubility at low temperature, transition temperature, electrical reliability, birefringence, etc., even if the compound represented by formula (L-4.4) is contained, formula (L -4.5) contains both the compound represented by formula (L-4.4) and the compound represented by formula (L-4.5). May be.

  The lower limit of the preferable content of the compound represented by the formula (L-4.4) or the formula (L-4.5) with respect to the total amount of the composition of the present invention is 3%, and 5%. Yes, 7%, 9%, 11%, 12%, 13%, 18%, 21%. 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-4.4) and the compound represented by the formula (L-4.5) are contained, both compounds with respect to the total amount of the composition of the present invention The lower limit of the preferred content is 15%, 19%, 24%, and 30%, and the preferred upper limit is 45, 40%, 35%, and 30%. Yes, 25%, 23%, 20%, 18%, 15%, 13%.

  The compound represented by General Formula (L-4) is preferably a compound represented by Formula (L-4.7) to Formula (L-4.10), and in particular, Formula (L-4. The compound represented by 9) is preferred.

  The compound represented by 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 the 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 a carbon atom. The alkoxy group of number 1-4 is preferable.

  Although the compound represented by general formula (L-5) can also be used independently, it can also be used in combination of 2 or more compounds. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence. The kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.

  In the composition of the present invention, the content of the compound represented by the general formula (L-5) is low-temperature solubility, transition temperature, electrical reliability, birefringence, process compatibility, dripping marks, It is necessary to adjust appropriately according to required performance such as image sticking and dielectric anisotropy.

The lower limit of the preferable content of the compound represented by the formula (L-5) with respect 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 preferable content of the compound represented by the formula (L-5) with respect to the total amount of the composition of the present invention is 50%, 40%, 35%, and 30%. , 20%, 15%, 10%, and 5% The compound represented by the general formula (L-5) is represented by the formula (L-5.1) or the formula (L-5.2). It is preferable that it is a compound represented by a formula (L-5.1).

  The lower limit of the preferable content of these compounds with respect 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 General Formula (L-5) is preferably a compound represented by Formula (L-5.3) or Formula (L-5.4).

  The lower limit of the preferable content of these compounds with respect 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 formula (L-5.5) to the formula (L-5.7). It is preferable that it is a compound represented by L-5.7).

  The lower limit of the preferable content of these compounds with respect 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 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 a fluorine atom and the other is a hydrogen atom. Is preferred.

  Although the compound represented by general formula (L-6) can also be used independently, it can also be used in combination of 2 or more compounds. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required properties such as solubility at low temperatures, transition temperatures, electrical reliability, and birefringence. The kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.

  The lower limit of the preferable content of the compound represented by the formula (L-6) with respect 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 preferable content of the compound represented by the formula (L-6) with respect to the total amount of the composition of the present invention is 50%, 40%, 35%, and 30%. 20%, 15%, 10%, 5%. When emphasizing to increase Δn, it is preferable to increase the content, and when emphasizing the precipitation at low temperature, it is preferable to decrease the content.

  The compound represented by General Formula (L-6) is preferably a compound represented by Formula (L-6.1) to 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 from these compounds, and it is more preferable to contain 1 type-4 types. Further, since the wide molecular weight distribution of the compound to be selected is also effective for solubility, for example, one type of the compound represented by the formula (L-6.1) or (L-6.2), the formula (L- 6.4) or one type from the compound represented by (L-6.5), one type from the compound represented by formula (L-6.6) or formula (L-6.7), formula (L It is preferable to select one compound from the compounds represented by -6.8) or (L-6.9) and combine them as appropriate. Among these, it is represented by Formula (L-6.1), Formula (L-6.3), Formula (L-6.4), Formula (L-6.6), and Formula (L-6.9). It is preferable to include a compound.

  Furthermore, 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), for example. The compound represented by L-6.11) is preferable.

  The lower limit of the preferable content of these compounds with respect 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 general formula (L-7) is the following compound.

^{(Wherein, R L71} and ^{R L72} each independently represent the same meaning as ^{R L1} and ^{R L2} in Formula ^{(L), A L71} and ^{A L72} is ^{A L2} and in the general formula (L) independently A ^L3 represents the same meaning, but the hydrogen atoms on A ^L71 and A ^L72 may be each independently substituted with a fluorine atom, Z ^L71 represents the same meaning as Z ^L2 in 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 preferably an alkyl group having 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 preferably a 1,4-cyclohexylene group or a 1,4-phenylene group, the hydrogen atoms on A ^L71 and A ^L72 may be each independently substituted with a fluorine atom, and Z ^L71 is a single group. A bond or COO- is preferable, a single bond is preferable, and X ^L71 and X ^L72 are preferably a hydrogen atom.

  Although there is no restriction | limiting in particular in the kind of compound which can be combined, It combines according to performance requested | required, such as solubility at low temperature, transition temperature, electrical reliability, birefringence. The kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, and four kinds.

  In the composition of the present invention, the content of the compound represented by the general formula (L-7) is low temperature solubility, transition temperature, electrical reliability, birefringence index, process suitability, dripping marks, It is necessary to adjust appropriately according to required performance such as image sticking and dielectric anisotropy.

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

  When an embodiment with high Tni is desired for the composition of the present invention, the content of the compound represented by formula (L-7) is preferably increased, and when an embodiment with a low viscosity is desired, the content is It is preferable to reduce the amount.

  Furthermore, the compound represented by General Formula (L-7) is preferably a compound represented by Formula (L-7.1) to Formula (L-7.4), and Formula (L-7. It is preferable that it is a compound represented by 2).

  Furthermore, 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 the formula (L-7. It is preferable that it is a compound represented by 11).

  Furthermore, the compound represented by the general formula (L-7) is a compound represented by the formula (L-7.21) to the formula (L-7.23). A compound represented by the formula (L-7.21) is preferable.

  Further, 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 a compound represented by the formula (L-7.32).

  Furthermore, 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 a compound represented by formula (L-7.42).

  Furthermore, the compound represented by General Formula (L-7) is preferably a compound represented by Formula (L-7.51) to Formula (L-7.53).

Of the compounds represented by 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 value of the total preferable content is 80%, 85%, 88%, 90%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, 99%, 100%. The upper limit of the preferable content is 100%, 99%, 98%, and 95%.

The lower limit of the total preferable content of the compound 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 %, 4%, 6%, 8%, 10%, 12%, 14%, 16%. The preferable upper limit is 30%, 25%, 20%, 18%, 16%, 14%, and 12%.

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

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

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

Liquid crystal compositions for use in liquid crystal display elements are required to be designed with appropriate physical properties as 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 (spread elasticity) Constant: K ₁₁ , elastic constant of torsion: K ₂₂ , elastic constant of bending: K ₃₃ , and their average value K _ave. ).
In order to show low γ ₁ , it is preferable to contain a 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 Formula (L-1-3).
The compound represented by the general formula (L-1-1) is a compound selected from the group of compounds represented by the formula (L-1-1.1) to the formula (L-1-1.3). Is preferable, and is preferably a compound represented by Formula (L-1-1.2) or Formula (L-1-1.3), and particularly represented by Formula (L-1-1.3). It is preferable that it is a compound.
The compound represented by the general formula (L-1-2) is a compound selected from the compound group represented by the formula (L-1-2.1) to the formula (L-1-2.4). Are preferred, and compounds represented by the formula (L-1-2.2) to the formula (L-1-2.4) are preferred. In particular, the compound represented by the formula (L-1-2.2) is preferable because the response speed of the composition of the present invention is particularly improved.
The compound represented by General Formula (L-1-3) is a compound selected from the group of compounds represented by Formula (L-1-3.1) to Formula (L-1-3.12). Are preferable, and a compound represented by Formula (L-1-3.1), Formula (L-1-3.3), or Formula (L-1-3.4) is preferable. In particular, the compound represented by the formula (L-1-3.1) is preferable because the response speed of the composition of the present invention is particularly improved.
In order to design a liquid crystal composition exhibiting an appropriate Δn, it is preferable to contain an appropriate amount of a compound exhibiting a large Δn in addition to the compound represented by the general formula (L-1) exhibiting a small Δn. The dielectrically neutral compound exhibiting a large Δn preferably contains 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 Formula (L-3.1) to Formula (L-3.6). -3.1), a compound selected from the group of compounds represented by formula (L-3.3), formula (L-3.5), or formula (L-3.6), It is preferable that it is a compound represented by L-3.1).
The compound represented by General Formula (L-5) is preferably a compound represented by Formula (L-5.1) or Formula (L-5.2), and in particular, Formula (L-5. It is preferable that it is a compound represented by 1).
In order to design a liquid crystal composition exhibiting an appropriate Δε, it is preferable to contain an appropriate amount of a compound exhibiting a large Δε in addition to the compound represented by the general formula (L-1) exhibiting a small Δn. The compound showing a large Δε preferably contains 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 -11), general formula (N-1-1), general formula (N-1-2), general formula (N-1-3), general formula (N-1-4), general formula (N It is preferable to contain the compound represented by -1-5), general formula (N-1-18), and / or general formula (N-1-22).
The compound represented by the general formula (N-1-10) is a compound selected from the group of compounds represented by the formula (N-1-10.1) to the formula (N-1-10.21). Are preferred, and the compounds represented by formulas (N-1-10.1) to (N-1-10.5), formula (N-1-10.20) and formula (N-1-10.21) Preferably, it is represented by the formula (N-1-10.1), the formula (N-1-10.2), the formula (N-1-10.20) and the formula (N-1-10.21). The compounds represented by formula (N-1-10.1) and (N-1-10.2) are preferred, and the compound represented by formula (N-1-10.2) Is preferred.
The compound represented by General Formula (N-1-11) is a compound selected from the group of compounds represented by Formula (N-1-11.1) to Formula (N-1-11.14). And compounds represented by formula (N-1-11.2), formula (N-1-11.4), formula (N-1-11.11) and (N-1-11.14) It is preferable that
The compound represented by General Formula (N-1-1) is a compound selected from the group of compounds represented by Formula (N-1-1.1) to Formula (N-1-1.23). Are preferred, and compounds represented by formulas (N-1-1.1) to (N-1-1.4) are preferred, and formula (N-1-1.1) and formula (N-1) are preferred. The compound represented by -1.3) is preferable.
The compound represented by the general formula (N-1-2) is a compound selected from the compound group represented by the formula (N-1-2.1) to the formula (N-1-2.22). Are preferable, and the formula (N-1-2.3) to the formula (N-1-2.7), the formula (N-1-2.10), the formula (N-1-2.11), the formula (N -1-2.13) and a compound represented by the formula (N-1-2.20) are preferable, and a compound represented by the formula (N-1-2.4) is preferable.
The compound represented by General Formula (N-1-3) is a compound selected from the group of compounds represented by Formula (N-1-3.1) to Formula (N-1-3.21). Are preferred, and compounds represented by formulas (N-1-3.1) to (N-1-3.7) and formula (N-1-3.21) are preferred, and formula (N-1 -3.1), formula (N-1-3.2), formula (N-1-3.3), formula (N-1-3.4) and formula (N-1-3.6) The compounds represented are preferred.
The compound represented by the general formula (N-1-4) is a compound selected from the compound group represented by the formula (N-1-4.1) to the formula (N-1-4.14). Are preferred, and compounds represented by formulas (N-1-4.1) to (N-1-4.4) are preferred, and formula (N-1-4.1) and formula (N-1) are preferred. -4.2) and the compounds represented by formula (N-1-4.4) are preferred.
The compound represented by General Formula (N-1-5) is a compound selected from the group of compounds represented by Formula (N-1-5.1) to Formula (N-1-5.6). Are preferred, and compounds represented by formula (N-1-5.1), formula (N-1-5.2) and formula (N-1-5.4) are preferred.
The compound represented by the general formula (N-1-18) is a compound selected from the compound group represented by the formula (N-1-18.1) to the formula (N-1-18.5). Are preferred, and compounds represented by formulas (N-18.1) to (N-1-11.3) are preferred, and formulas (N-1-18.2) and formula (N-1) are preferred. The compound represented by -18.3) is preferable.
The compound represented by the general formula (N-1-22) is a compound selected from the group of compounds represented by the formula (N-1-22.1) to the formula (N-1-22.12). Are preferred, and compounds represented by formulas (N-1-22.1) to (N-1-22.5) are preferred, and formulas (N-1-22.1) to (N-1- The compound represented by 22.4) is preferred.
When Δn is increased, 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 1 type, or 2 or more types of compounds chosen from a group, and it is especially preferable to contain 2 or more types.
It preferably contains two or more compounds selected from the group of compounds represented by general formula (N-1-3), general formula (N-1-4) and general formula (N-1-18), It is preferable to contain 2 or more types of compounds chosen from the compound group represented by general formula (N-1-3) and general formula (N-1-4), and in general formula (N-1-3) It is preferable to contain two or more compounds represented.

  The upper limit of the preferable total content of the compound represented by formula (N-1d) and the compound represented by formula (N-1) having an alkenyl group with respect to the total amount of the composition of the present invention The values are 20%, 18%, 15%, 13%, 10%, 8%, 5%, 3%, 2%, 1% It is preferable that it does not contain substantially.

  The composition of the present invention preferably does not contain a compound having a structure in which oxygen atoms such as a peracid (—CO—OO—) structure are bonded in the molecule.

  When emphasizing the reliability and long-term stability of the composition, the content of the compound having a carbonyl group is preferably 5% or less, more preferably 3% or less with respect to the total mass of the composition. Preferably, it is more preferably 1% or less, and most preferably not substantially contained.

  When importance is attached to the stability by UV irradiation, the content of the compound substituted with chlorine atoms is preferably 15% or less, preferably 10% or less, based on the total mass of the composition. % Or less, preferably 5% or less, more preferably 3% or less, and still more preferably substantially not contained.

  It is preferable to increase the content of a 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% relative to the total mass of the composition. % Or more, more preferably 90% or more, still more preferably 95% or more, and the composition is composed only of a compound in which all of the ring structures in the molecule are all 6-membered rings. Most preferably.

  In order to improve the tilt stability of the composition, it is preferable to increase the content of the compound whose side chain is an alkyl group and an alkoxy group, and to increase the content of the compound whose side chain is an alkyl group and an alkoxy group. It is preferably 85% or more, preferably 87% or more, preferably 90% or more, preferably 93% or more, and preferably 95% or more with respect to the total mass of the composition. Is preferably 98% or more, and more preferably substantially 100%. Substantially 100% means 100% excluding polymerizable compounds, stabilizers and additionally contaminated 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 ring structure, and the content of the compound having a cyclohexenylene group as the total mass of the composition. On the other hand, it is preferably 10% or less, preferably 8% or less, more preferably 5% or less, preferably 3% or less, and still more preferably not contained.

  When importance is attached to improvement of viscosity and improvement of Tni, the content of a compound having a 2-methylbenzene-1,4-diyl group in the molecule, in which a hydrogen atom may be substituted with a halogen, may be reduced. Preferably, the content of the compound having a 2-methylbenzene-1,4-diyl group in the molecule is preferably 10% or less, more preferably 8% or less, based on the total mass of the composition. It is more preferably 5% or less, further preferably 3% or less, and still more preferably substantially not contained.

  In the present application, the phrase “not substantially contained” means that the substance is not contained except for an unintentionally contained substance.

  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 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 directly bonded. Preferably not.

The average elastic constant (K _AVG ) of the liquid crystal composition used in the present invention is preferably 10 to 25, and the lower limit thereof is preferably 10, preferably 10.5, preferably 11 and preferably 11.5. , 12 is preferable, 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 preferred, 14.5 is preferred, 14.8 is preferred, 15 is preferred, 15.3 is preferred, 15.5 is preferred, 15.8 is preferred, 16 is preferred, 16.3 is preferred, 16 .5, 16.8 is preferable, 17 is preferable, 17.3 is preferable, 17.5 is preferable, 17.8 is preferable, and 18 is preferable. 25 is preferable, 24.5 is preferable, 24 is preferable, 23.5 is preferable, 23 is preferable, 22.8 is preferable, 22.5 is preferable, 22.3 is preferable, 22 is preferable, and 21.8 is 21.5 is preferred, 21.3 is preferred, 21 is preferred, 20.8 is preferred, 20.5 is preferred, 20.3 is preferred, 20 is preferred, 19.8 is preferred, 19.5 is preferred 19.3 is preferred, 19 is preferred, 18.8 is preferred, 18.5 is preferred, 18.3 is preferred, 18 is preferred, 17.8 is preferred, 17.5 is preferred, 17.3 is preferred 17 is preferable. When importance is placed on reducing power consumption, it is effective to reduce the amount of light from the backlight, and it is preferable to improve the light transmittance of the liquid crystal display element. For this purpose, the value of K _AVG should be set low. preferable. When importance is attached to improvement of response speed and contrast, it is preferable to set the value of K _AVG high.

  In the composition of the present invention, one or two or more kinds of polymerization are used for producing a liquid crystal display element such as a vertical alignment type PSA mode, a vertical alignment type PSVA mode, a horizontal electric field type PSA mode, or a horizontal electric field type PSVA mode. A functional compound.

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

^{(Wherein, R 201, R 202, R} 203, R 204, R 205, R 206, R 207, R 208, R 209 and ^{R 210} each ^{independently,} P 21 ^{-S 21} -, fluorine atom Represents an alkyl group having 1 to 18 carbon atoms which may be substituted, an alkoxy group having 1 to 18 carbon atoms which may be substituted with a fluorine atom, a fluorine atom or a hydrogen atom;
P ²¹ is independently selected from the formulas (R-1) to (R-9).

(In the formula, R ¹¹ , R ¹² , R ¹³ , R ¹⁴ and R ¹⁵ each independently represents an alkyl group having 1 to 5 carbon atoms, a fluorine atom or a hydrogen atom, and m ^r5 , m ^{and r7} , ^nr5 and ^nr7 each independently represents 0, 1, or 2).
S ²¹ represents a single bond or an alkylene group having 1 to 15 carbon atoms, and one or more of —CH ₂ — in the alkylene group is —O—, —, so that an oxygen atom is not directly adjacent to each other. OCO- or -COO- may be substituted,
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 — may be replaced by —O—).
(B) a 1,4-phenylene group (one —CH═ present in the group or two or more non-adjacent —CH═ may be replaced by —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 or 1,2 , 3,4-tetrahydronaphthalene-2,6-diyl group, one —CH═ or two or more non-adjacent —CH═ may be replaced by —N═.
The group (a), the group (b) and the group (c) are independently selected from the group consisting of: an alkyl group having 1 to 12 carbon atoms, and a group having 1 to 12 carbon atoms. alkoxy group, a halogen, a cyano group, a nitro group, or ^P 21 ^{-S 21} - be substituted with good,
Having at least one P ²¹ -S ^21- in one molecule of the general formula (II),
L ²¹ represents 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 each R ^a is independently hydrogen. Represents an atom or an alkyl group having 1 to 3 carbon atoms, and in the above formula, z independently represents an integer of 1 to 4,
When there are a plurality of P ²¹ , S ²¹ , and A ²¹ , they may be the same or different. ) Is preferred.

In the general formula (II), 1 or 2 or more ^P 21 ^{-S 21} in one molecule of the compound represented by the general formula (II) - preferably having the 4 following ^P 21 ^{-S 21} - 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 the general formula (II) The number of P ²¹ —S ²¹ — in the molecule of the compound represented by is particularly preferably 2 or 3.

That is, the compound represented by the general formula (II) has a structure in which at least two benzene rings and, if necessary, a ring A ²¹ are connected to each other, and P ²¹ -S ^21- in the plurality of benzene rings and the ring A ²¹ . Therefore, the compound represented by the general formula (II) exhibits the action and effect as a polymerizable compound.

In the above general formula (II), one 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 If it ^{is, R 201, R 202, R} 204, R 207, R 209 or one or two or more either ^{R 210} is ^{P 21 -S} 21 - - but ^P 21 ^{-S 21} is preferably , ^{R 201} and ^{R 210} are ^P 21 ^{-S 21} - is more preferable.

In the general formula ^{(II), R 201} and ^{R 210} each ^{independently,} P 21 ^{-S 21} - is preferably, in this ^{case, R 201} and ^{R 210} identical ^P 21 ^{-S 21} - in even different ^P 21 ^{-S 21} - may be.

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} each ^{independently,} P 21 ^{-S 21} - Represents an alkyl group having 1 to 18 carbon atoms which may be substituted with a fluorine atom, an alkoxy group having 1 to 18 carbon atoms which may be substituted with a fluorine atom, a fluorine atom or a hydrogen atom, In this case, the number of carbon atoms of the alkyl group and the alkoxy group is 1 to 16, more preferably 1 to 10, still more preferably 1 to 8, still more preferably 1 to 6, More preferably, it is 1-4, Most preferably, it is 1-3. The alkyl group and 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} -, from 1 carbon atom 3 alkyl group, preferably a fluorine atom or a hydrogen atom, P ^{21 -S} 21 ^-, more preferably a fluorine atom or a hydrogen atom, more preferably a fluorine atom or a hydrogen atom.

P ²¹ is preferably the formula (R-1), more preferably an acryl group or a methacryl group, and even more preferably a methacryl 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 above general formula (II), L ²¹ represents 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 preferable.

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, 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, 0.09 mass% is preferable, 1% by mass is preferable, 0.15% by mass is preferable, 0.2% by mass is preferable, 0.25% by mass is preferable, 0.3% by mass is preferable, 0.35% by mass is preferable, and 0.4% by mass %, 0.5% by weight is preferable, 0.55% by weight is preferable, and the upper limit of the content is preferably 4.5% by weight, preferably 4% by weight, preferably 3.5% by weight, and 3% by weight. % Is preferable, 2.5% by mass is preferable, and 2% by mass 1.5% by mass is preferable, 1% by mass is preferable, 0.95% by mass is preferable, 0.9% by mass is preferable, 0.85% by mass is preferable, 0.8% by mass is preferable, and 0.8% by mass is preferable. 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.

  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 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 preferably each independently a methacryl group or an acryl group.

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

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

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

Formula (XX-1) from the formula (XX-29) in the hydrogen atom in the 1,4-phenylene group, _{further, -F, -Cl, -CF 3,} -CH 3 or formula (R-1) To (R-15) may be substituted.

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

  In addition, polymerizable compounds such as formula (M19) to formula (M34) are also preferable.

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

  The compound represented by the general formula (II) is also preferably a polymerizable compound represented by the formula (M35) to the formula (M65).

In the polymerizable compound-containing liquid crystal composition according to the present invention, the content of the polymerizable compound represented by the formulas (M1) to (M65) with respect to the entire liquid crystal composition is 0.01 to 5% by mass, The lower limit of the content is preferably 0.02 mass%, preferably 0.03 mass%, preferably 0.04 mass%, preferably 0.05 mass%, preferably 0.06 mass%, 0.07 mass% 0.08% by mass is preferable, 0.09% by mass is preferable, 0.1% by mass is preferable, 0.15% by mass is preferable, 0.2% by mass is preferable, and 0.25% by mass is preferable. 0.3% by mass, 0.35% by mass is preferable, 0.4% by mass is preferable, 0.5% by mass is preferable, 0.55% by mass is preferable, and the upper limit of the content is 4.5% by mass % Is preferred, 4% by weight is preferred and 3% is preferred. 5% by mass is preferable, 3% by mass is preferable, 2.5% by mass is preferable, 2% by mass is preferable, 1.5% by mass is preferable, 1% by mass is preferable, 0.95% by mass is preferable, and 0. 9% by mass is preferable, 0.85% by mass is preferable, 0.8% by mass is preferable, 0.75% by mass is preferable, 0.7% by mass is preferable, 0.65% by mass is preferable, and 0.6% by 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 may contain a polymerization initiator in order to accelerate the 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 the general formula (Q).

(Wherein, R ^Q represents a straight-chain alkyl group or branched alkyl group having from 1 22 carbon atoms, one or two or more CH ₂ groups in the alkyl group, so that the oxygen atoms are not directly adjacent a, -O -, - CH = CH -, - CO -, - OCO -, - COO -, - C≡C -, - CF 2 O -, - OCF 2 - may be substituted with, in ^{R Q} hydrogen atoms, 4-hydroxy-3,5-di -t- butyl phenyl group may be substituted by, ^{M Q} is trans-1,4-cyclohexylene group, 1,4-phenylene group or a single bond In the trans-1,4-cyclohexylene group, one or two non-adjacent —CH ₂ — may be substituted with —O—.
R ^Q represents a linear alkyl group having 1 to 22 carbon atoms or a branched alkyl group, and one or two or more CH ₂ groups in the alkyl group are —O—so that the oxygen atom is not directly adjacent to each other. -, - CH = CH -, - CO -, - OCO -, - COO -, - C≡C -, - CF 2 O -, - OCF 2 - may be substituted with, but 1 to 10 carbon atoms Linear alkyl group, linear alkoxy group, linear alkyl group in which one CH ₂ group is substituted by —OCO— or —COO—, branched alkyl group, branched alkoxy group, one CH ₂ group is —OCO— Or a branched alkyl group substituted with —COO—, a linear alkyl group having 1 to 20 carbon atoms, a linear alkyl group in which one CH ₂ group is substituted with —OCO— or —COO—, branched Chain alkyl group, branched alkoxy group, one CH ₂ group Is more preferably a branched alkyl group substituted with —OCO— or —COO—. ^MQ represents a trans-1,4-cyclohexylene group, a 1,4-phenylene group or a single bond, and a trans-1,4-cyclohexylene group or a 1,4-phenylene group is preferable.

  More specifically, the compound represented by the general formula (Q) is preferably a compound represented by the following general formula (Qa) to general formula (Qe).

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

  As the specific compound represented by the general formula (Q), the formula (Q-11) to the formula (Q-15) are particularly preferable.

  In the composition of the present invention, the compound represented by the general formula (Q) preferably contains one or two kinds, more preferably contains 1 to 5 kinds, and the lower limit of the preferred content is 0.0001%, 0.0002%, 0.0005%, 0.001%, 0.002%, 0.005%, 0.01%, 0 0.015%, 0.02%, 0.05%, 0.75%, 0.01%, and 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%, 0 15% der.

  The liquid crystal composition of the present invention can also contain at least one compound represented by formula (I-1).

In general formula (I-1), ^RHS each independently represents a hydrogen atom or an alkyl group having 1 to 10 carbon atoms, and particularly preferably a hydrogen atom. When it is an alkyl group, it preferably has 1 to 8 carbon atoms, preferably 1 to 5 carbon atoms, preferably 1 to 3 carbon atoms, and 1 carbon atom. Further preferred. When a plurality of ^RHS are present, they may be the same or different.

M ^HS represents an alkyl group having 1 to 15 carbon atoms when n ^HS represents 1, and represents an alkylene group having 1 to 15 carbon atoms when n ^HS represents an integer of 2 to 6 and is present in M ^HS One or more —CH ₂ — represents —O—, —CH═CH—, —C≡C—, —CO—, —OCO—, —COO—, trans-1,4-cyclohexylene group, , 4-phenylene group and naphthalene-2,6-diyl group may be substituted, but considering the viscosity given to the liquid crystal composition and its volatility, M ^HS is an alkyl group having 2 to 10 carbon atoms or An alkylene group is preferable, an alkyl group or alkylene group having 2 to 8 carbon atoms is preferable, an alkyl group or alkylene group having 4 to 8 carbon atoms is preferable, and an alkyl group or alkylene group having 6 or 8 carbon atoms is preferable. M ^HS may be linear or branched.

n ^HS represents an integer of 1 to 6, and preferably 2 to 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). It is preferable that

(Wherein R ^H11 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 represents a hydrogen atom or an alkyl group having 1 to 10 carbon atoms.)

(Wherein R ^H13 and R ¹¹³ each independently represents a hydrogen atom or an alkyl group having 1 to 30 carbon atoms.)

When ^nHS represents 2, it is preferable that the compound represented by general formula (I-1) is a compound represented by 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. One or more —CH ₂ — is —O—, —CH═CH—, —C≡C—, —CO—, —OCO—, —COO—, trans-1,4-cyclohexylene group, 1, (It may be substituted with a 4-phenylene group or a naphthalene-2,6-diyl group.)
In general formula (I-2), R ^H1 and R ^H2 are particularly preferably hydrogen atoms. When it is an alkyl group, it preferably has 1 to 8 carbon atoms, preferably 1 to 5 carbon atoms, preferably 1 to 3 carbon atoms, and 1 carbon atom. Further preferred.
In general formula (I-2), M represents an alkylene group having 1 to 15 carbon atoms, but considering viscosity and volatility of the liquid crystal composition, M is an alkylene group having 2 to 10 carbon atoms. Preferably, alkylene having 4 to 8 carbon atoms is preferable, and alkylene having 6 or 8 carbon atoms is preferable.
Specific examples include compounds represented by general formula (I-24), general formula (I-26), and general formula (I-28). R ^H1 and R ^{H2 in} these formulas are as described above.

More specifically, examples include compounds represented by general formula (I-24H), general formula (I-26H) and general formula (I-28H), and bis represented by general formula (I-28H). (2,2,6,6, -tetramethyl-4-piperidyl) sebacate is most suitable.

Moreover, when ^nHS represents the integer of 3 to 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), a compound having a small molecular weight is adsorbed to the alignment film in the liquid crystal display element and often causes display unevenness, but the general formula (I- Since the compound represented by 3) has a large molecular weight, it is possible to prevent display unevenness.

(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 represents an integer of 1 to 4. When n ^H3 is 2, 3 or 4, and a plurality of R ^H5 are present, they may be the same or different.
In general formula (I-3), R ^H3 , R ^H4 and R ^H5 are particularly preferably hydrogen atoms. When it is an alkyl group, it preferably has 1 to 8 carbon atoms, preferably 1 to 5 carbon atoms, preferably 1 to 3 carbon atoms, and 1 carbon atom. Further preferred.

Specifically, compounds represented by general formula (I-31), general formula (I-32), and general formula (I-33) are preferable. R ^H3 , R ^H4 and R ^{H5 in} these formulas are as described above.

  More specifically, compounds represented by formula (I-31H), formula (I-31C), formula (I-32H) and formula (I-33H) are preferred.

  In the liquid crystal composition, the compound represented by the general formula (I-1) is preferably contained in the composition at a lower limit of 0.01% or more, preferably 0.02% or more. 0.03% or more, preferably 0.05% or more, preferably 0.07% or more, preferably 0.1% or more, preferably 0.15% or more It is preferable to contain 0.2% or more, preferably 0.25% or more, preferably 0.3% or more, preferably 0.5% or more, preferably 1% It is preferable to contain above. The upper limit is preferably 5% or less, preferably 3% or less, preferably 1% or less, preferably 0.5% or less, and 0.45% or less. It is preferable to contain 0.4% or less, preferably 0.35% or less, preferably 0.3% or less, preferably 0.25% or less. 2% or less, preferably 0.15% or less, preferably 0.1% or less, preferably 0.07% or less, preferably 0.05% or less It is preferable to contain 0.03% or less.

  More specifically, the content is preferably 0.01 to 5% by mass, preferably 0.01 to 0.3% by mass, more preferably 0.02 to 0.3% by mass, Particularly preferred is 0.05 to 0.25% by mass. More specifically, when emphasizing the suppression of precipitation at low temperatures, 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 light stabilizer. More specifically, compounds represented by the following (III-1) to (III-38) are preferred.

(In the formula, n represents an integer of 0 to 20.)
The composition of the present invention comprises a compound represented by general formula (Q), a compound represented by general formula (I-1), and an antioxidant represented by general formulas (III-1) to (III-38). A compound selected from an agent and / or a light stabilizer can be contained in combination. In the liquid crystal composition, the content of these additives is preferably 0.01% or more, preferably 0.02% or more, and 0.03% or more as the lower limit in the composition. Preferably 0.05% or more, preferably 0.07% or more, preferably 0.1% or more, preferably 0.15% or more, 0 .2% or more, preferably 0.25% or more, preferably 0.3% or more, preferably 0.5% or more, preferably 1% or more preferable. The upper limit is preferably 5% or less, preferably 3% or less, preferably 1% or less, preferably 0.5% or less, and 0.45% or less. It is preferable to contain 0.4% or less, preferably 0.35% or less, preferably 0.3% or less, preferably 0.25% or less. 2% or less, preferably 0.15% or less, preferably 0.1% or less, preferably 0.07% or less, preferably 0.05% or less It is preferable to contain 0.03% or less.

More specifically, the content is preferably 0.01 to 5% by mass, preferably 0.01 to 0.3% by mass, more preferably 0.02 to 0.3% by mass, Particularly preferred is 0.05 to 0.25% by mass. More specifically, when emphasizing the suppression of precipitation at low temperatures, the content is preferably 0.01 to 0.1% by mass.
Generally, various parameters calculated from the physical property values of the liquid crystal composition are used as a method for expressing the characteristics of the liquid crystal display element. These are γ ₁ / K ₃₃ or γ ₁ / K _ave which is a parameter governing the response speed, K ₁₁ / K ₃₃ which is a parameter governing the steepness of the electro-optic effect, and a parameter which governs the driving voltage. | K ₃₃ / Δε | or | K _ave / Δε | and K _ave that strongly governs contrast. The liquid crystal composition of the present invention has both high-speed response, low drive voltage, good low-temperature storage stability, high transmittance, and high contrast. In the present specification, K _ave is defined as an average value of K ₁₁ and K ₃₃ .
Therefore, γ ₁ / K _33, which is a parameter governing the response speed of the vertically aligned liquid crystal display element, is 10. 0 mPa · s · pN ⁻¹ or less is preferred, 9.8 mPa · s · pN ⁻¹ or less is preferred, 9.5 mPa · s · pN ⁻¹ or less is preferred, 9.2 mPa · s · pN ⁻¹ or less is preferred, preferably 9.0mPa · s · ^{pN -1} or less, preferably 8.8mPa · s · ^{pN -1} or less, preferably 8.6mPa · s · ^{pN -1} or less, 8.4mPa · s · ^{pN -1} or less preferably, preferably 8.2mPa · s · ^{pN -1} or less, preferably 8.0mPa · s · ^{pN -1} or less, preferably 7.8mPa · s · ^{pN -1} or less, 7.6mPa · s · ^{pN -1} The following is preferable, 7.4 mPa · s · pN ⁻¹ or less is preferable, 7.2 mPa · s · pN ⁻¹ or less is preferable, 7.0 mPa · s · pN ⁻¹ or less is preferable, and 6.8 mPa · s · pN ⁻¹ or less is preferable. ^-1 or less Is preferably 6.6 mPa · s · pN ⁻¹ or less.
Γ ₁ / K _ave, which is a parameter governing the response speed of the horizontal alignment liquid crystal display element, is 10. 0 mPa · s · pN ⁻¹ or less is preferred, 9.8 mPa · s · pN ⁻¹ or less is preferred, 9.5 mPa · s · pN ⁻¹ or less is preferred, 9.2 mPa · s · pN ⁻¹ or less is preferred, preferably 9.0mPa · s · ^{pN -1} or less, preferably 8.8mPa · s · ^{pN -1} or less, preferably 8.6mPa · s · ^{pN -1} or less, 8.4mPa · s · ^{pN -1} or less preferably, preferably 8.2mPa · s · ^{pN -1} or less, preferably 8.0mPa · s · ^{pN -1} or less, preferably 7.8mPa · s · ^{pN -1} or less, 7.6mPa · s · ^{pN -1} The following is preferable, 7.4 mPa · s · pN ⁻¹ or less is preferable, 7.2 mPa · s · pN ⁻¹ or less is preferable, 7.0 mPa · s · pN ⁻¹ or less is preferable, and 6.8 mPa · s · pN ⁻¹ or less is preferable. ^-1 or less Is preferably 6.6 mPa · s · pN ⁻¹ or less.
K ₁₁ / K ₃₃ which is a parameter governing the steepness of the electro-optic effect in the vertical alignment liquid crystal display element is preferably 1.30 or less, preferably 1.25 or less, preferably 1.20 or less, and 1.18 or less. 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, and 1.02 or less is preferable. 1.00 or less is particularly preferable.
| K ₃₃ / Δε |, which is a parameter governing the driving voltage of the vertical alignment liquid crystal display element, is preferably 6.0 pN or less, preferably 5.9 pN or less, preferably 5.8 pN or less, preferably 5.7 pN or less. .6 pN or less is 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. 9 pN or less is preferable, and 4.8 pN or less is particularly preferable.
| K _ave / Δε |, which is a parameter governing the driving voltage of the horizontal alignment liquid crystal display element, is preferably 6.0 pN or less, preferably 5.9 pN or less, preferably 5.8 pN or less, preferably 5.7 pN or less. .6 pN or less is 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. 9 pN or less is preferable, and 4.8 pN or less is particularly preferable.
K _ave which is a parameter governing the contrast of the liquid crystal display element is preferably 10.0 pN or more,
10.5 pN or more is preferred, 11.0 pN or more is preferred, 11.5 pN or more is preferred, 12.0 pN or more is preferred, 12.5 pN or more is preferred, 13.0 pN or more is preferred, 13.0 pN or more is preferred, 14 0.0pN or more, 14.2pN or more is preferable, 14.4pN or more is preferable, 14.6pN or more is preferable, 14.8pN or more is preferable, 15.0pN or more is preferable, 15.2pN or more is preferable, 15. 4pN or more is preferable, 15.6pN or more is preferable, 15.8pN or more is preferable, 16.0pN or more is preferable, 16.2pN or more is preferable, 16.4pN or more is preferable, 16.6pN or more is preferable, 16.8pN Or more, preferably 17.0 pN or more, and preferably 17.2 pN or more. Ku is preferably at least 17.4PN is preferably at least 17.6PN is preferably at least 17.8PN, more 18.0pN is particularly preferred.
In the case of a horizontally aligned liquid crystal display element that is particularly disadvantageous in contrast, it is preferably 16.0 pN or more, preferably 16.2 pN or more, preferably 16.4 pN or more, preferably 16.6 pN or more, preferably 16.8 pN or more, and 17. 0 pN or more 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.

  In the composition containing the polymerizable compound of the present invention, the polymerizable compound contained therein is polymerized by ultraviolet irradiation to impart liquid crystal alignment ability, and the amount of transmitted light is controlled using the birefringence of the composition. Used for liquid crystal display elements.

  The liquid crystal display device using the composition of the present invention is useful for achieving both high-speed response and suppression of display failure, and is particularly useful for a liquid crystal display device for active matrix driving, and includes a VA mode, a PSVA mode, and a PSA. It can be applied to liquid crystal display elements for mode, IPS mode, FFS mode or ECB mode.

  Moreover, in the manufacturing process of the liquid crystal display element by the ODF method, it is necessary to drop an optimal liquid crystal injection amount according to the size of the liquid crystal display element. The liquid crystal display element can be kept at a high yield because liquid crystal can be stably dropped over a long period of time with little influence on abrupt pressure change or impact in the apparatus. In particular, small liquid crystal display elements that are frequently used in smartphones that have been popular recently are difficult to control the deviation from the optimal value within a certain range because the optimal liquid crystal injection amount is small. By using an object, a stable discharge amount of a liquid crystal material can be realized even in a small liquid crystal display element.

  EXAMPLES The present invention will be described in further detail with reference to examples below, but the present invention is not limited to these examples. Further, “%” in the compositions of the following Examples and Comparative Examples means “% by mass”.

  In the examples, the measured characteristics are as follows.

T _ni : Nematic phase-isotropic liquid phase transition temperature (° C.)
Δn: Refractive index anisotropy at 293K Δε: Dielectric anisotropy at 293K γ ₁ : Rotational viscosity (mPa · s) at 293K
K ₁₁ : Elastic constant of expansion at 293K (pN)
K ₂₂ : Elastic constant of twist (pN) at 293K
K ₃₃ : Elastic constant of bending at 293K (pN)
K _ave. : Average elastic constant at 293K (pN)
In the examples, the following abbreviations are used for the description of compounds.
(Ring structure)

(Side chain structure)

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

(However, n in the table is a natural number.)
(Criteria)
When evaluating the characteristics as a horizontal alignment liquid crystal display device, the prepared liquid crystal composition is applied by a vacuum injection method to a comb-shaped ITO cell that has been subjected to a rubbing treatment by applying a polyimide alignment film that induces homogeneous alignment. Thus, an in-plane switching (IPS) liquid crystal display element was obtained. These obtained IPS liquid crystal display elements were measured for electro-optical characteristics and evaluated for drive voltage, response speed, transmittance, contrast, and the like. The results were judged in three stages: “◯: no problem level”, “Δ: slightly unacceptable level” and “x: unacceptable level”. When evaluating a liquid crystal composition with an Δn of less than 0.105, use a cell with a cell gap of 2.8 μm. When evaluating a liquid crystal composition with an Δn of 0.105 or more, use a cell with a cell gap of 2.6 μm. did.

  When evaluating the characteristics as a vertical alignment liquid crystal display device, the prepared liquid crystal composition is injected into a cell with ITO coated with a polyimide alignment film that induces homeotropic alignment by a vacuum injection method (VA). ) A liquid crystal display element was obtained. These obtained VA liquid crystal display elements were measured for electro-optical characteristics and evaluated for drive voltage, response speed, transmittance, contrast, and the like. The results were judged in three stages: “◯: no problem level”, “Δ: slightly unacceptable level” and “x: unacceptable level”. When evaluating a liquid crystal composition with an Δn of less than 0.105, use a cell with a cell gap of 3.3 μm. When evaluating a liquid crystal composition with an Δn of 0.105 or more, use a cell with a cell gap of 3.0 μm. did.

In the case of evaluating a liquid crystal display element represented by polymer-stabilized vertical alignment (PSVA) that regulates the alignment of liquid crystal molecules by adding a polymerizable compound to a liquid crystal composition and performing photopolymerization, the injected liquid crystal display element On the other hand, in the case of a VA liquid crystal display element, the liquid crystal display element is exposed to about 10 J with a UV lamp having an intensity of about 100 mW / cm ⁻² (365 nm) while applying a rectangular wave of 10 V and 100 Hz. The polymer stabilized vertical alignment (PSVA) liquid crystal display element was obtained by exposing about 100 J in the state which cut off. In the case of an IPS or FFS liquid crystal display element, a polymer-stabilized horizontal alignment (PS-IPS or PS-FFS) liquid crystal display element was obtained by exposing it to about 100 J without applying a voltage. These obtained liquid crystal display elements were measured for electro-optical characteristics and evaluated for drive voltage, response speed, transmittance, contrast, and the like. The results were judged in three stages: “◯: no problem level”, “Δ: slightly unacceptable level” and “x: unacceptable level”.
(Comparative Example 1 and Example 1)
LC-A as a comparative example and LC-1 as an example were prepared, and their physical properties were measured. The structure of the liquid crystal composition and the results of its physical property values are shown below.

LC-1 (Example 1) and LC-A (Comparative Example 1) are parameters that govern the response speed, γ ₁ / K _ave. Is a sufficiently small parameter that governs the drive voltage | K _ave. It was found that the liquid crystal composition had a sufficiently low / Δε |. On the other hand, LC-A was found to have a significantly smaller Δn than LC-1.

  Next, when these liquid crystal compositions were used to obtain a horizontal alignment liquid crystal display element and a vertical alignment liquid crystal display element, it was confirmed that both of these liquid crystal display elements showed a high-speed response and a low driving voltage. However, the transmittance of the display element prepared using LC-A is lower than that of the liquid crystal display element prepared using LC-1, and a significant reduction in contrast is 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 all of high-speed response, low driving voltage, high transmittance, and high contrast.
(Comparative Example 2 and Example 2)
LC-B as a comparative example and LC-2 as an example were prepared, and their physical properties were measured. The structure of the liquid crystal composition and the results of its physical property values are shown below.

LC-2 (Example 2) and LC-B (Comparative Example 2) are parameters governing the drive voltage | K _ave. It was found that the liquid crystal composition had a sufficiently low / Δε |. On the other hand, LC-B is a parameter that governs drive voltage, response speed, and contrast as compared to LC-2 _. , _Which is a parameter that governs response speed, is γ ₁ / K _ave. It turns out that becomes large.

  Next, when these liquid crystal compositions were used to obtain a horizontal alignment liquid crystal display element and a vertical alignment liquid crystal display element, it was confirmed that both of these liquid crystal display elements exhibited a low driving voltage. However, it was found that the liquid crystal display element produced using LC-B has a slower response speed and lower contrast than the liquid crystal display element produced using 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 all of high-speed response, low driving voltage, high transmittance, and high contrast.
(Examples 3, 4 and 5)
As examples, LC-3, LC-4 and LC-5 liquid crystal compositions were prepared, and their physical properties were measured. The structure of the liquid crystal composition and the results of its physical property values 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 all of high-speed response, low driving voltage, high transmittance, and high contrast in the liquid crystal display element.
(Examples 6, 7 and 8)
As examples, LC-6, LC-7 and LC-8 liquid crystal compositions were prepared, and their physical properties were measured. The structure of the liquid crystal composition and the results of its physical property values 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 all of high-speed response, low driving voltage, high transmittance, and high contrast in the liquid crystal display element.
(Example 9 to Example 40)
A polymerizable compound represented by XX-2, XX-5, XX-15 and M65 is added as a polymerizable compound to the prepared liquid crystal compositions LC-1 to LC8, and the polymerizable compound-containing liquid crystal composition MLC is added. −1 to MLC-32 (Examples 9 to 40) were prepared.

The structure 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 elements exhibited the same characteristics as those of the liquid crystal display elements 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 all of high-speed response, low driving voltage, high transmittance, and high contrast in a polymer liquid crystal display device.

Claims (12)

Formula (i)

Containing a compound represented by
Furthermore, 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 — in the alkyl group are each independently selected. -CH = CH-, -C≡C-, -O-, -CO-, -COO- or -OCO-
n ^N11 and n ^N12 each independently represent 0, 1, 2, or 3, while 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 — may be replaced by —O—),
(B) a 1,4-phenylene group (one —CH═ present in the group or two or more non-adjacent —CH═ may be replaced by —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 or 1,2 , 3,4-tetrahydronaphthalene-2,6-diyl group, one —CH═ or two or more non-adjacent —CH═ may be replaced by —N═.
The group (a), the group (b) and the group (c) are each independently an alkyl group (one —CH ₂ — present in this group or adjacent to each other). Two or more —CH ₂ — that are not present may be replaced by —O—), an alkenyl group (one —CH ₂ — present in this group, or two or more —CH 2 not adjacent to each other). _2- may be replaced with -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═N—N═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 are the same or different. However, the compound represented by the general formula (N-1) excludes the compound represented by the general formula (N-1d) described later. )
Containing one or more compounds represented by:
As a compound represented by general formula (N-1), general formula (N-1-3)

(In the formula, R ^N131 and R ^N132 each independently represent the same meaning as R ^N11 and R ^N12 in formula (N-1).)
A liquid crystal composition containing a compound represented by formula (except for a liquid crystal composition containing a compound represented by formula (B31)).

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

As a compound represented by general formula (N-1), general formula (N-1c)

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

(In the formula, R ^N11 and R ^N12 represent the same meaning as R ^N11 and R ^N12 in formula (N-1), n ^Ne11 represents 1 or 2, and A ^Ne11 represents trans-1,4-cyclohexylene. Represents a group or a 1,4-phenylene group, and Z ^{Ne 11} represents a single bond or ethylene, but at least one represents ethylene.)
The liquid crystal composition according to claim 1, further comprising a compound represented by: As a compound represented by general formula (N-1), general formula (N-1b)

(In the formula, R ^N11 and R ^N12 represent the same meaning as R ^N11 and R ^N12 in formula (N-1), and n ^Nb11 represents 1 or 2).
The liquid crystal composition according to claim 1, further comprising a compound represented by:   The liquid crystal composition according to any one of claims 1 to 4, comprising a compound represented by the general formula (N-1d). 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 formula (N-1), n ^Ng11 represents 1 or 2, and A ^Ng11 represents trans-1,4-cyclohexylene. Represents a group, 1,4-cyclohexenylene group or 1,4-phenylene group, but at least one represents a 1,4-cyclohexenylene group.)
The liquid crystal composition according to claim 1, further comprising a compound represented by: Furthermore, the general formula (L)

(Wherein, 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 — in the alkyl group are each independently -CH = CH-, -C≡C-, -O-, -CO-, -COO- or -OCO-
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 — may be replaced by —O—),
(B) a 1,4-phenylene group (one —CH═ present in the group or two or more non-adjacent —CH═ may be replaced by —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 or 1,2 , 3,4-tetrahydronaphthalene-2,6-diyl group, one —CH═ or two or more non-adjacent —CH═ may be replaced by —N═.
The group (a), the group (b) and the group (c) are each independently an alkyl group (one —CH ₂ — present in this group or adjacent to each other). Two or more —CH ₂ — that are not present may be replaced by —O—), an alkenyl group (one —CH ₂ — present in this group, or two or more —CH 2 not adjacent to each other). _2- may be replaced with -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═N—N═CH—, —CH═CH—, —CF═CF— or —C≡C—,
n ^L1 represents 0, 1, 2 or 3,
When a plurality of A ^L2 are present, they may be the same or different, and when a plurality of Z ^L2 are present, they may be the same or different, but in the formula (B31) Excludes the compounds represented. )
The liquid crystal composition according to any one of claims 1 to 6, comprising one or more compounds represented by formula (1).   Furthermore, the liquid-crystal composition as described in any one of Claims 1-7 containing a polymeric compound. The polymerizable compound is represented by the general formula (II)

^{(Wherein, R 201, R 202, R} 203, R 204, R 205, R 206, R 207, R 208, R 209 and ^{R 210} each ^{independently,} P 21 ^{-S 21} -, fluorine atom Represents an alkyl group having 1 to 18 carbon atoms which may be substituted, an alkoxy group having 1 to 18 carbon atoms which may be substituted with a fluorine atom, a fluorine atom or a hydrogen atom;
P ²¹ is independently selected from the formulas (R-1) to (R-9).

(In the formula, R ¹¹ , R ¹² , R ¹³ , R ¹⁴ and R ¹⁵ each independently represents an alkyl group having 1 to 5 carbon atoms, a fluorine atom or a hydrogen atom, and m ^r5 , m ^{and r7} , ^nr5 and ^nr7 each independently represents 0, 1, or 2).
S ²¹ represents a single bond or an alkylene group having 1 to 15 carbon atoms, and one or more of —CH ₂ — in the alkylene group is —O—, —, so that an oxygen atom is not directly adjacent to each other. OCO- or -COO- may be substituted,
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 — may be replaced by —O—).
(B) a 1,4-phenylene group (one —CH═ present in the group or two or more non-adjacent —CH═ may be replaced by —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 or 1,2 , 3,4-tetrahydronaphthalene-2,6-diyl group, one —CH═ or two or more non-adjacent —CH═ may be replaced by —N═.
The group (a), the group (b) and the group (c) are independently selected from the group consisting of: an alkyl group having 1 to 12 carbon atoms, and a group having 1 to 12 carbon atoms. alkoxy group, a halogen, a cyano group, a nitro group, or ^P 21 ^{-S 21} - be substituted with good,
Having at least one P ²¹ -S ^21- in one molecule of the general formula (II),
L ²¹ represents 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 each R ^a is independently hydrogen. Represents an atom or an alkyl group having 1 to 3 carbon atoms, and in the formula, z independently represents an integer of 1 to 4).
The liquid crystal composition of Claim 8 represented by these.   The liquid crystal display element using the liquid-crystal composition as described in any one of Claims 1-9.   A vertical alignment type liquid crystal display element using the liquid crystal composition according to claim 1.   The horizontal alignment type liquid crystal display element using the liquid-crystal composition as described in any one of Claims 1-9.