TW201934723A - Liquid crystal composition - Google Patents

Abstract

The present invention addresses the problem of providing: a polymerizable liquid crystal composition that has a negative dielectric constant anisotropy ([Delta][epsilon]), that satisfies low voltage drive properties, high-speed response, and display-ability in a wide temperature range typically required for liquid crystal compositions, and that has no or very few display defects when used in a liquid crystal display element; and a liquid crystal display element using the liquid crystal composition. This liquid crystal composition has a negative dielectric constant anisotropy ([Delta][epsilon]) and comprises one or more polymerizable compounds and one or more compounds selected from compounds represented by general formulas (N-1), (N-2), and (N-3).

Description

Liquid crystal composition

The present invention relates to a liquid crystal composition.

The liquid crystal display element performs display by applying a voltage to a liquid crystal composition sandwiched between two substrates and controlling its alignment to change optical characteristics. The liquid crystal composition changes its initial alignment state by applying a voltage. The initial alignment state is controlled by an alignment film using rubbed polyimide. However, as for the rubbed polyimide, it is difficult to separate the alignment state. Therefore, the use of polymerizable compounds to control the pretilt angle has been developed and put into practical use. method. Also, recently, a method of "controlling the initial alignment state by a self-aligning compound without using an alignment film itself" has been also discussed. However, in these methods, in order to control the alignment of the liquid crystal composition, a polymer of a polymerizable compound is used.

These liquid crystal display elements are irradiated with ultraviolet rays in a state where "a polymerizable liquid crystal composition containing a polymerizable compound in a liquid crystal composition is dropped on a substrate and sandwiched between another substrate" to polymerize the polymerizable compound. When a polymerizable liquid crystal composition is dropped on this substrate, display defects (drip marks) may occur in the dropped portion when a display element is formed. Therefore, it is desired to develop a polymerizable liquid crystal composition that does not cause such drip marks.

[Prior technical literature]
[Patent Literature]
Patent Document 1: Japanese Patent Publication No. 2014-524951

[Problems to be Solved by the Invention]

The object of the present invention is to provide a polymerizable liquid crystal composition with a negative dielectric anisotropy (Δε), which meets the requirements of a general liquid crystal composition for a wide temperature range display, high-speed response, and low-voltage driveability. In addition, when a liquid crystal display element is formed, there is no display defect, or there are very few display defects. The object of the present invention is to provide a liquid crystal display element using the liquid crystal composition.
[Technical means to solve the problem]

The invention provides a liquid crystal composition having a negative dielectric anisotropy (Δε) and containing one or two or more kinds selected from the general formulae (N-1), (N-2), and (N-3). Among the compounds represented, and one or two or more polymerizable compounds, the present invention also provides a liquid crystal display device using the polymerizable liquid crystal composition.

( ^Wherein R ^N11 , R ^N12 , R ^N21 , R ^N22 , R ^N31 and R ^N32 each independently represent an alkyl group having 1 to 8 carbon atoms, one of the alkyl groups or two or more adjacent ones -CH ₂ -may also be independently replaced by -CH = CH-, -C≡C-, -O-, -CO-, -COO-, or -OCO-,
A ^N11 , A ^N12 , A ^N21 , A ^N22 , A ^N31 and A ^N32 each independently represent a group selected from the group consisting of the following (a), (b), (c), (d):
(A) 1,4-Cyclohexyl (one -CH ₂ -or two or more -CH ₂ -which are not contiguous in this group may be replaced by -O-)
(B) 1,4-phenylene (1 -CH = present in this group or 2 or more non-adjacent -CH = may be replaced by -N =)
(C) Naphthalene-2,6-diyl, 1,2,3,4-tetrahydronaphthalene-2,6-diyl or decahydronaphthalene-2,6-diyl (present in naphthalene-2,6- Diyl or one of 1,2,3,4-tetrahydronaphthalene-2,6-diyl -CH = or two or more non-adjacent -CH = can be replaced by -N =) and (d ) 1,4--cyclohexenylene,
The above-mentioned groups (a), (b), (c) and (d) may each be independently substituted by a cyano group, a fluorine atom or a chlorine atom,
Z ^N11 , Z ^N12 , Z ^N21 , Z ^N22 , Z ^N31, and Z ^N32 each independently represent a single bond, -CH ₂ CH ₂ -,-(CH ₂ ) _4- , -OCH _2- , -CH ₂ O-, -COO-, -OCO-, -OCF _2- , -CF ₂ O-, -CH = N-N = CH-, -CH = CH-, -CF = CF-, or -C≡C-,
X ^N21 represents a hydrogen atom or a fluorine atom,
T ^N31 represents -CH ₂ -or an oxygen atom,
n ^N11 , n ^N12 , n ^N21 , n ^N22 , n ^N31 and n ^N32 each independently represent an integer of 0 to 3, n ^N11 + n ^N12 , n ^N21 + n ^N22 and n ^N31 + n ^N32 are each independently 1, 2 or 3 When there are a plurality of cases of A ^N11 to A ^N32 and Z ^N11 to Z ^N32 , they may be the same or different).

The polymerizable liquid crystal of this case can be used in particular to form a liquid crystal display element for active matrix driving.
[Effect of the invention]

According to the present invention, a polymerizable liquid crystal composition can be provided, which does not generate drip marks during the manufacture of a liquid crystal display element, or can suppress the generation of drip marks; and can provide a VA type, IPS type, FFS type, PSA type or The PSVA type liquid crystal display element has no display failure due to drip marks, or suppresses display failure due to drip marks.

The liquid crystal composition of the present invention has a negative dielectric anisotropy. The nematic phase-isotropic liquid has a transfer temperature of 60 ° C or higher, and the absolute anisotropy of the dielectric anisotropy is 1.5 or higher. It contains one or two or more A compound selected from the group of compounds represented by the following general formulae (N-1), (N-2), and (N-3).

The compounds represented by the general formulae (N-1), (N-2), and (N-3) correspond to compounds having a negative dielectric property (the sign of Δε is negative, and its absolute value 値 is greater than 2).

The compound represented by the general formulae (N-1), (N-2), and (N-3) is preferably a compound in which Δε is negative and its absolute value is greater than 3.

In the general formulae (N-1), (N-2), and (N-3), R ^N11 , R ^N12 , R ^N21 , R ^N22 , R ^N31, and R ^N32 are each preferably independently 1 to 3 carbon atoms. The alkyl group of 8, the alkoxy group of 1 to 8 carbon atoms, the alkenyl group of 2 to 8 carbon atoms, or the alkenyl group of 2 to 8 carbon atoms, preferably an alkyl group of 1 to 5 carbon atoms, Alkoxy group having 1 to 5 carbon atoms, alkenyl group having 2 to 5 carbon atoms or alkenyl group having 2 to 5 carbon atoms, more preferably an alkyl group having 1 to 5 carbon atoms or 2 to 5 carbon atoms The alkenyl group of 5 is more preferably an alkyl group having 2 to 5 carbon atoms or an alkenyl group having 2 to 3 carbon atoms, and particularly preferably an alkenyl group (propenyl group) having 3 carbon atoms.

When the ring structure to be bonded is phenyl (aromatic), a linear alkyl group having 1 to 5 carbon atoms and a linear alkyl group having 1 to 4 carbon atoms are preferred. When the ring structure to which the oxygen group and the alkenyl group having 4 to 5 carbon atoms are bonded is a saturated ring structure such as cyclohexane, piperan, and dioxane, linear carbon atoms are preferred. Alkyl groups having 1 to 5 carbon atoms, linear alkoxy groups having 1 to 4 carbon atoms, and linear alkenyl groups having 2 to 5 carbon atoms. In order to stabilize the nematic phase, when carbon atoms are present, the total number of oxygen atoms is preferably 5 or less, and preferably linear.

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

When it is required to increase Δn, A ^N11 , A ^N12 , A ^N21 , A ^N22 , A ^N31 and A ^{N32 are} preferably each independently aromatic. In order to improve the response speed, it is preferably aliphatic, and more preferably Represents trans-1,4-cyclohexyl, 1,4-phenylene, 2-fluoro-1,4-phenylene, 3-fluoro-1,4-phenylene, 3,5-difluoro -1,4-phenylene, 2,3-difluoro-1,4-phenylene, 1,4-cyclohexenyl, 1,4-bicyclo [2.2.2] octyl, piperidine -1,4-diyl, naphthalene-2,6-diyl, decalin-2,6-diyl, or 1,2,3,4-tetrahydronaphthalene-2,6-diyl, more preferably The following structure,

More preferably, it is trans-1,4-cyclohexyl, 1,4-cyclohexenyl, or 1,4-phenylene.

Z ^N11 , Z ^N12 , Z ^N21 , Z ^N22 , Z ^N31, and Z ^{N32 are} preferably each independently represented by -CH ₂ O-, -CF ₂ O-, -CH ₂ CH _2- , -CF ₂ CF ₂ -or a single bond, more preferably _{-CH 2 O -, - CH 2} CH 2 - or a single bond, and particularly preferably is -CH ₂ O- or a single bond.

X ^{N21 is} preferably a fluorine atom.

T ^{N31 is} preferably an oxygen atom.

n ^N11 + n ^N12 , n ^N21 + n ^N22 and n ^N31 + n ^{N32 are} preferably 1 or 2, preferably n ^N11 is 1 and n ^N12 is 0; n ^N11 is 2; n ^N12 is 0; n ^N11 Is a combination of 1, n ^N12 is 1; a combination of n ^N11 is 2, a combination of n ^N12 is 1; a combination of n ^N21 is 1, n ^N22 is 0; a combination of n ^N21 is 2, n ^N22 is 0; n ^N31 is 1 , N ^N32 is a combination of 0; n ^N31 is 2, a combination of n ^N32 is 0.

In this case,% means mass% when it is not specifically mentioned.

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

Relative to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by formula (N-2) is 1%, 10%, 20%, 30%, 40%, and 50. %, 55%, 60%, 65%, 70%, 75%, 80%. The upper limit of the preferred content is 95%, 85%, 75%, 65%, 55%, 45%, 35%, 25%, and 20%.

Relative to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by formula (N-3) is 1%, 10%, 20%, 30%, 40%, and 50. %, 55%, 60%, 65%, 70%, 75%, 80%. The upper limit of the preferred content is 95%, 85%, 75%, 65%, 55%, 45%, 35%, 25%, and 20%.

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

Examples of the compound represented by the general formula (N-1) include a compound group represented by the following general formulae (N-1a) to (N-1g).

(In the formula, R ^N11 and R ^N12 represent the same meaning as R ^N11 and R ^N12 in the general formula (N-1), n ^Na11 represents 0 or 1, n ^Nb11 represents 1 or 2, and n ^Nc11 represents 0 or 1, n ^Nd11 means 1 or 2, n ^Ne11 means 1 or 2, n ^{N f 12} means 1 or 2, n ^Ng11 means 1 or 2, A ^Ne11 means trans-1,4-cyclohexyl or 1,4-benzene A ^Ng11 represents trans-1,4-cyclohexenyl, 1,4-cyclohexenyl or 1,4-phenylene, but at least one A ^Ng11 represents 1,4-cyclohexenyl Z ^Ne11 represents a single bond or ethylene, but at least one Z ^Ne11 present in the molecule represents ethylene. A ^Ne11 , Z ^Ne11 , and / or A ^{Ng11 in the molecule} may be the same. Can be different)
More specifically, the compound represented by general formula (N-1) is preferably a compound selected from the group of compounds represented by general formulae (N-1-1) to (N-1-21).

The compound represented by the 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 the general formula (N-1).)
R ^{N111 is} preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and is preferably propyl, pentyl or vinyl. R ^{N112 is} preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and is preferably an ethoxy group or a butoxy group.

The compound represented by the general formula (N-1-1) may be used alone, or two or more kinds of compounds may be used in combination. The types of compounds that can be combined are not particularly limited, and they can be used in appropriate combinations according to the properties required for low temperature solubility, transfer temperature, electrical reliability, birefringence, and the like. The type of the compound to be used is, for example, one embodiment of the present invention, two types, three types, four types, or five or more types.

When it is important to improve Δε, it is better to set the content higher. When it is important to lower temperature solubility, if the content is set higher, the effect is higher. When T _NI is important, If the content is set lower, the effect is higher. Moreover, when the case of dripping marks or afterimage characteristics is improved, it is preferable to set the range of the content in the middle.

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

In addition, the compound represented by the general formula (N-1-1-1) is preferably a compound selected from the compound group represented by the formula (N-1-1.1) to the formula (N-1-1-1), and more preferably The compound represented by the formulae (N-1-1.1) to (N-1-1.4) is preferably a compound represented by the formulae (N-1-1.1) and (N-1-1.3).

The compounds represented by the formulae (N1-1.1.1) to (N1-1.1.25) may be used alone or in combination. The lower limit of the preferable content of these compounds relative to the total amount of the composition of the present invention The value is 5%, 10%, 13%, 15%, 17%, 20%, 23%, 25%, 27%, 30%, 33%, and 35%. With respect to the total amount of the composition of the present invention, the upper limit of the preferred content is 50%, 40%, 38%, 35%, 33%, 30%, 28%, and 25%. It is 23%, 20%, 18%, 15%, 13%, 10%, 8%, 7%, 6%, 5%, and 3%.

The compound represented by the general formula (N1-2) 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 the general formula (N-1).)
R ^{N121 is} preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and is preferably ethyl, propyl, butyl, or pentyl. R ^{N122 is} preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and is preferably methyl, propyl, methoxy, or ethyl. Oxy or propoxy.

The compound represented by the general formula (N-1-2) may be used alone, but may be used in combination of two or more kinds. The types of compounds that can be combined are not particularly limited, and they can be used in appropriate combinations according to the properties required for low temperature solubility, transfer temperature, electrical reliability, birefringence, and the like. The type of the compound to be used is, for example, one embodiment of the present invention, two types, three types, four types, or five or more types.

When it is important to improve Δε, it is better to set the content higher. When it is important to lower temperature solubility, if the content is set lower, the effect is high. When T _NI is important, if If the content is set higher, the effect is higher. Moreover, when the case of dripping marks or afterimage characteristics is improved, it is preferable to set the range of the content in the middle.

With respect to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by formula (N1-2) is 5%, 7%, 10%, 13%, and 15%. It is 17%, 20%, 23%, 25%, 27%, 30%, 33%, 35%, 37%, 40%, and 42%. With respect to the total amount of the composition of the present invention, the upper limit of the preferred content is 50%, 48%, 45%, 43%, 40%, 38%, 35%, 33%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 7%, 6%, 5 %.

In addition, the compound represented by the general formula (N1-2) is preferably a compound selected from the compound group represented by the formula (N1-2.1) to the formula (N1-2.25), and more preferably Formula (N-1-2-2.3) to Formula (N-1-2-2.7), Formula (N-1-2.10), Formula (N-1-2-2.11), Formula (N-1-2-1.3) and Formula (N-1) When the compound represented by -2.20) emphasizes the improvement of Δε, it is preferably a compound represented by the formula (N-1-2.3) to the formula (N-1-2.7), and when the importance of improving T _NI is emphasized, The compound represented by the formula (N-1-2.10), the formula (N-1-2.11), and the formula (N-1-2.13) is preferred. When the improvement of response speed is important, the formula (N- 1-2.20).

The compounds represented by the formulae (N-1-2.1) to (N-1-2.25) can be used alone or in combination, alone or below the preferred content of these compounds relative to the total composition of the present invention The limit is 5%, 10%, 13%, 15%, 17%, 20%, 23%, 25%, 27%, 30%, 33%, 35%. With respect to the total amount of the composition of the present invention, the upper limit of the preferred content is 50%, 40%, 38%, 35%, 33%, 30%, 28%, and 25%. It is 23%, 20%, 18%, 15%, 13%, 10%, 8%, 7%, 6%, 5%, and 3%.

The compound represented by the general formula (N1-3) 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 the general formula (N-1).)
R ^{N131 is} preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and more preferably ethyl, propyl or butyl. R ^{N132 is} preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 3 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and preferably 1-propenyl, ethoxy, and propoxy Or butoxy.

The compound represented by the general formula (N1-3) may be used alone, or two or more kinds of compounds may be used in combination. The types of compounds that can be combined are not particularly limited, and they can be used in appropriate combinations according to the properties required for low temperature solubility, transfer temperature, electrical reliability, birefringence, and the like. The type of the compound to be used is, for example, one embodiment of the present invention, two types, three types, four types, or five or more types.

When it is important to improve Δε, it is better to set the content higher. When it is important to lower temperature solubility, if the content is set higher, the effect is higher. When T _NI is important, If the content is set a little more, the effect is high. Moreover, when the case of dripping marks or afterimage characteristics is improved, it is preferable to set the range of the content in the middle.

Relative to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by formula (N1-3) is 5%, 10%, 13%, 15%, and 17%. 20%. With respect to the total amount of the composition of the present invention, the upper limit of the preferred content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, and 15%. 13%.

In addition, the compound represented by the general formula (N1-3) is preferably a compound selected from the compound group represented by the formula (N1-3.1) to the formula (N1-3.21), and more preferably The compounds represented by the formulae (N-1-3.1) to (N-1-1-3) and (N-1-1-31) are preferably the formula (N-1-3.1) and the formula (N-1-1-3) , Compounds represented by formula (N-1-3.3), formula (N-1-3.4) and formula (N-1-3.6).

The compounds represented by the formulae (N-3.1-3.1) to (N-1-3-3.4), (N-1-3-3.6), and (N-1-3.21) can be used alone or in combination. Is a combination of formula (N-1-3.1) and formula (N-1-3.2) or is selected from formula (N-1-3.3), formula (N-1-3.4) and formula (N-1-3.6) Two or three combinations. The lower limit of the preferable content of these compounds alone or relative to the total composition of the present invention is 5%, 10%, 13%, 15%, 17%, and 20%. With respect to the total amount of the composition of the present invention, the upper limit of the preferred content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, and 15%. 13%.

The compound represented by the general formula (N1-4) is the following compound.

(In the formula, R ^N141 and R ^N142 each independently represent the same meaning as R ^N11 and R ^N12 in the general formula (N-1).)
R ^N141 and R ^N142 are each preferably 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 a methyl group or a propyl group. Group, ethoxy or butoxy.

The compound represented by the general formula (N1-4) may be used alone, but may be used in combination of two or more kinds. The types of compounds that can be combined are not particularly limited, and they can be used in appropriate combinations according to the properties required for low temperature solubility, transfer temperature, electrical reliability, birefringence, and the like. The type of the compound to be used is, for example, one embodiment of the present invention, two types, three types, four types, or five or more types.

When it is important to improve Δε, it is better to set the content higher. When it is important to lower temperature solubility, if the content is set higher, the effect is higher. When T _NI is important, If the content is set lower, the effect is higher. Moreover, when the case of dripping marks or afterimage characteristics is improved, it is preferable to set the range of the content in the middle.

Relative to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by formula (N1-4) is 3%, 5%, 7%, 10%, and 13%. It was 15%, 17%, and 20%. With respect to the total amount of the composition of the present invention, the upper limit of the preferred content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, and 15%. It was 13%, 11%, 10%, and 8%.

In addition, the compound represented by the general formula (N1-4) is preferably a compound selected from the compound group represented by the formula (N4-1.4.1) to the formula (N1-4.24), and more preferably The compounds represented by the formulae (N-1-4-1) to (N-1-4.4) are preferably the formula (N-1-4.1), the formula (N-1-4.2), and the formula (N-1-4.4). The indicated compound.

The compounds represented by the formulae (N-1-4.1) to (N-1-4.24) can be used alone or in combination. The lower limit of the preferable content of these compounds relative to the total amount of the composition of the present invention The value is 3%, 5%, 7%, 10%, 13%, 15%, 17%, and 20%. With respect to the total amount of the composition of the present invention, the upper limit of the preferred content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, and 15%. It was 13%, 11%, 10%, and 8%.

The compound represented by the general formula (N1-5) is a compound described below.

(In the formula, R ^N151 and R ^N152 each independently represent the same meaning as R ^N11 and R ^N12 in the general formula (N-1).)
R ^N151 and R ^N152 are each preferably 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 more preferably an ethyl group or a propyl group. Or butyl.

The compound represented by the general formula (N1-5) may be used alone, but may be used in combination of two or more kinds. The types of compounds that can be combined are not particularly limited, and they can be used in appropriate combinations according to the properties required for low temperature solubility, transfer temperature, electrical reliability, birefringence, and the like. The type of the compound to be used is, for example, one embodiment of the present invention, two types, three types, four types, or five or more types.

When attention is paid to the improvement of Δε, it is better to set the content higher. When attention is paid to the solubility at low temperature, if the content is set lower, the effect is high. When attention is paid to T _NI , if If you set the content higher, the effect is higher. Moreover, when the case of dripping marks or afterimage characteristics is improved, it is preferable to set the range of the content in the middle.

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

In addition, the compound represented by the general formula (N1-5) is preferably a compound selected from the compound group represented by the formula (N5-1-5.1) to the formula (N-1-5.12), and more preferably Compounds represented by formula (N-1-5.1), formula (N-1-5.2) and formula (N-1-5.4).

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

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 the general formula (N-1).)
R ^{N1101 is} preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and is preferably ethyl, propyl, butyl, vinyl, or 1-propenyl. R ^{N1102 is} preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and is preferably an ethoxy group, a propoxy group or a butoxy group .

The compound represented by the general formula (N-1-10) may be used alone, but may be used in combination of two or more kinds. The types of compounds that can be combined are not particularly limited, and they can be used in appropriate combinations according to the properties required for low temperature solubility, transfer temperature, electrical reliability, birefringence, and the like. The type of the compound to be used is, for example, one embodiment of the present invention, two types, three types, four types, or five or more types.

When it is important to improve Δε, it is better to set the content higher. When it is important to lower temperature solubility, if the content is set higher, the effect is higher. When T _NI is important, If the content is set lower, the effect is higher. Moreover, when the case of dripping marks or afterimage characteristics is improved, it is preferable to set the range of the content in the middle.

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

In addition, the compound represented by the general formula (N-1-10) is preferably a compound selected from the compound group represented by the formula (N-1-10.1) to the formula (N-1-10.14), and more preferably The compounds represented by the formulae (N-1 to 10.1) to (N-1 to 10.5) are preferably the compounds represented by the formulas (N-1 to 10.1) and (N-1 to 10.2).

The compounds represented by the formula (N-1 to 10.1) and the formula (N to 1 to 10.2) can be used alone or in combination. The compounds alone or below the preferred content of the total composition of the present invention The limit is 5%, 10%, 13%, 15%, 17%, and 20%. With respect to the total amount of the composition of the present invention, the upper limit of the preferred content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, and 15%. 13%.

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 the general formula (N-1).)
R ^{N1111 is} preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and is preferably ethyl, propyl, butyl, vinyl, or 1-propenyl. 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 is preferably an ethoxy group, a propoxy group, or a butoxy group .

The compound represented by the general formula (N-1-11) may be used alone, or two or more compounds may be used in combination. The types of compounds that can be combined are not particularly limited, and they can be used in appropriate combinations according to the properties required for low temperature solubility, transfer temperature, electrical reliability, birefringence, and the like. The type of the compound to be used is, for example, one embodiment of the present invention, two types, three types, four types, or five or more types.

When it is important to improve Δε, it is better to set the content higher. When it is important to lower temperature solubility, if the content is set lower, the effect is high. When T _NI is important, if If the content is set higher, the effect is higher. Moreover, when the case of dripping marks or afterimage characteristics is improved, it is preferable to set the range of the content in the middle.

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

In addition, the compound represented by the general formula (N-1-11) is preferably a compound selected from the compound group represented by the formula (N-1-11. 1) to the formula (N-1-11.14), and more preferably The compounds represented by the formulae (N-1-11.11) to (N-1-11.14) are preferably compounds represented by the formulae (N-1-11.2.) And (N-1-11.14).

The compounds represented by formula (N-1-11.2.) And formula (N1-1.11.4) can be used alone or in combination, alone or below the preferred content of these compounds relative to the total composition of the invention The limit is 5%, 10%, 13%, 15%, 17%, and 20%. With respect to the total amount of the composition of the present invention, the upper limit of the preferred content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, and 15%. 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 the general formula (N-1).)
R ^{N1121 is} preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and more preferably ethyl, propyl or butyl. R ^{N1122 is} preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and is preferably an ethoxy group, a propoxy group, or a butoxy group .

The compound represented by the general formula (N-1-12) may be used alone, but may be used in combination of two or more kinds. The types of compounds that can be combined are not particularly limited, and they can be used in appropriate combinations according to the properties required for low temperature solubility, transfer temperature, electrical reliability, birefringence, and the like. The type of the compound to be used is, for example, one embodiment of the present invention, two types, three types, four types, or five or more types.

When it is important to improve Δε, it is better to set the content higher. When it is important to lower temperature solubility, if the content is set higher, the effect is higher. When T _NI is important, If the content is set lower, the effect is higher. Moreover, when the case of dripping marks or afterimage characteristics is improved, it is preferable to set the range of the content in the middle.

With respect to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by formula (N-12) is 5%, 10%, 13%, 15%, and 17%. 20%. With respect to the total amount of the composition of the present invention, the upper limit of the preferred content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, and 15%. 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 the general formula (N-1).)
R ^{N1131 is} preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and more preferably ethyl, propyl or butyl. 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 is preferably an ethoxy group, a propoxy group, or a butoxy group .

The compound represented by the general formula (N-1-13) may be used alone, or two or more compounds may be used in combination. The types of compounds that can be combined are not particularly limited, and they can be used in appropriate combinations according to the properties required for low temperature solubility, transfer temperature, electrical reliability, birefringence, and the like. The type of the compound to be used is, for example, one embodiment of the present invention, two types, three types, four types, or five or more types.

When it is important to improve Δε, it is better to set the content higher. When it is important to lower temperature solubility, if the content is set higher, the effect is higher. When T _NI is important, If the content is set higher, the effect is higher. Moreover, when the case of dripping marks or afterimage characteristics is improved, it is preferable to set the range of the content in the middle.

With respect to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by formula (N-1-13) is 5%, 10%, 13%, 15%, and 17%. 20%. With respect to the total amount of the composition of the present invention, the upper limit of the preferred content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, and 15%. 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 the general formula (N-1).)
R ^{N1141 is} preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and more preferably ethyl, propyl or butyl. 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 is preferably an ethoxy group, a propoxy group, or a butoxy group .

The compound represented by the general formula (N-1-14) may be used alone, but may be used in combination of two or more kinds. The types of compounds that can be combined are not particularly limited, and they can be used in appropriate combinations according to the properties required for low temperature solubility, transfer temperature, electrical reliability, birefringence, and the like. The type of the compound to be used is, for example, one embodiment of the present invention, two types, three types, four types, or five or more types.

When it is important to improve Δε, it is better to set the content higher. When it is important to lower temperature solubility, if the content is set higher, the effect is higher. When T _NI is important, If the content is set lower, the effect is higher. Moreover, when the case of dripping marks or afterimage characteristics is improved, it is preferable to set the range of the content in the middle.

With respect to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by formula (N-1-14) is 5%, 10%, 13%, 15%, and 17%. 20%. With respect to the total amount of the composition of the present invention, the upper limit of the preferred content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, and 15%. 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 the general formula (N-1).)
R ^{N1151 is} preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and more preferably ethyl, propyl or butyl. R ^{N1152 is} preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and is preferably an ethoxy group, a propoxy group, or a butoxy group .

The compound represented by the general formula (N-1-15) may be used alone, or two or more compounds may be used in combination. The types of compounds that can be combined are not particularly limited, and they can be used in appropriate combinations according to the properties required for low temperature solubility, transfer temperature, electrical reliability, birefringence, and the like. The type of the compound to be used is, for example, one embodiment of the present invention, two types, three types, four types, or five or more types.

When it is important to improve Δε, it is better to set the content higher. When it is important to lower temperature solubility, if the content is set higher, the effect is higher. When T _NI is important, If the content is set higher, the effect is higher. Moreover, when the case of dripping marks or afterimage characteristics is improved, it is preferable to set the range of the content in the middle.

With respect to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by formula (N-1-15) is 5%, 10%, 13%, 15%, and 17%. 20%. With respect to the total amount of the composition of the present invention, the upper limit of the preferred content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, and 15%. 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 the general formula (N-1).)
R ^{N1161 is} preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and more preferably ethyl, propyl or butyl. 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 is preferably an ethoxy group, a propoxy group, or a butoxy group .

The compound represented by the general formula (N-1-16) may be used alone, but may be used in combination of two or more kinds. The types of compounds that can be combined are not particularly limited, and they can be used in appropriate combinations according to the properties required for low temperature solubility, transfer temperature, electrical reliability, birefringence, and the like. The type of the compound to be used is, for example, one embodiment of the present invention, two types, three types, four types, or five or more types.

When it is important to improve Δε, it is better to set the content higher. When it is important to lower temperature solubility, if the content is set higher, the effect is higher. When T _NI is important, If the content is set higher, the effect is higher. Moreover, when the case of dripping marks or afterimage characteristics is improved, it is preferable to set the range of the content in the middle.

With respect to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by formula (N-1-16) is 5%, 10%, 13%, 15%, and 17%. 20%. With respect to the total amount of the composition of the present invention, the upper limit of the preferred content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, and 15%. 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 the general formula (N-1).)
R ^{N1171 is} preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and more preferably ethyl, propyl or butyl. R ^{N1172 is} preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and preferably ethoxy, propoxy or butoxy .

The compound represented by the general formula (N-1-17) may be used alone, or two or more compounds may be used in combination. The types of compounds that can be combined are not particularly limited, and they can be used in appropriate combinations according to the properties required for low temperature solubility, transfer temperature, electrical reliability, birefringence, and the like. The type of the compound to be used is, for example, one embodiment of the present invention, two types, three types, four types, or five or more types.

When it is important to improve Δε, it is better to set the content higher. When it is important to lower temperature solubility, if the content is set higher, the effect is higher. When T _NI is important, If the content is set higher, the effect is higher. Moreover, when the case of dripping marks or afterimage characteristics is improved, it is preferable to set the range of the content in the middle.

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

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

(In the formula, R ^N1181 and R ^N1182 each independently represent the same meaning as R ^N11 and R ^N12 in the general formula (N-1).)
R ^{N1181 is} preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and is preferably methyl, ethyl, propyl or butyl. R ^{N1182 is} preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and is preferably an ethoxy group, a propoxy group, or a butoxy group .

The compound represented by the general formula (N-1-18) may be used alone, but may be used in combination of two or more kinds. The types of compounds that can be combined are not particularly limited, and they can be used in appropriate combinations according to the properties required for low temperature solubility, transfer temperature, electrical reliability, birefringence, and the like. The type of the compound to be used is, for example, one embodiment of the present invention, two types, three types, four types, or five or more types.

When it is important to improve Δε, it is better to set the content higher. When it is important to lower temperature solubility, if the content is set higher, the effect is higher. When T _NI is important, If the content is set a little more, the effect is high. Moreover, when the case of dripping marks or afterimage characteristics is improved, it is preferable to set the range of the content in the middle.

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

In addition, the compound represented by the general formula (N-1-18) is preferably a compound selected from the compound group represented by the formula (N-1-18.1) to the formula (N-11-18.5), and more preferably The compounds represented by the formulae (N-1 to 18.1) to (N-1 to 18.3) are preferably compounds represented by the formulas (N-1 to 18.2) and (N-1 to 18.3).

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 the general formula (N-1).)
R ^N1201 and R ^N1202 are each preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and more preferably ethyl, propyl or butyl.

The compound represented by the general formula (N-1-20) may be used alone, but may be used in combination of two or more kinds. The types of compounds that can be combined are not particularly limited, and they can be used in appropriate combinations according to the properties required for low temperature solubility, transfer temperature, electrical reliability, birefringence, and the like. The type of the compound to be used is, for example, one embodiment of the present invention, two types, three types, four types, or five or more types.

When it is important to improve Δε, it is better to set the content higher. When it is important to lower temperature solubility, if the content is set higher, the effect is higher. When T _NI is important, If the content is set higher, the effect is higher. Moreover, when the case of dripping marks or afterimage characteristics is improved, it is preferable to set the range of the content in the middle.

Relative to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by the formula (N-20) is 5%, 10%, 13%, 15%, and 17%. 20%. With respect to the total amount of the composition of the present invention, the upper limit of the preferred content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, and 15%. 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 the general formula (N-1).)
R ^N1211 and R ^N1212 are each preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and more preferably ethyl, propyl or butyl.

The compound represented by the general formula (N-1-21) may be used alone, but may be used in combination of two or more kinds. The types of compounds that can be combined are not particularly limited, and they can be used in appropriate combinations according to the properties required for low temperature solubility, transfer temperature, electrical reliability, birefringence, and the like. The type of the compound to be used is, for example, one embodiment of the present invention, two types, three types, four types, or five or more types.

When it is important to improve Δε, it is better to set the content higher. When it is important to lower temperature solubility, if the content is set higher, the effect is higher. When T _NI is important, If the content is set a little more, the effect is high. Moreover, when the case of dripping marks or afterimage characteristics is improved, it is preferable to set the range of the content in the middle.

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

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

(In the formula, R ^N1221 and R ^N1222 each independently represent the same meaning as R ^N11 and R ^N12 in the general formula (N-1).)
R ^N1221 and R ^N1222 are each preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and more preferably ethyl, propyl or butyl.

The compound represented by the general formula (N-1-22) may be used alone, but may be used in combination of two or more kinds. The types of compounds that can be combined are not particularly limited, and they can be used in appropriate combinations according to the properties required for low temperature solubility, transfer temperature, electrical reliability, birefringence, and the like. The type of the compound to be used is, for example, one embodiment of the present invention, two types, three types, four types, or five or more types.

When it is important to improve Δε, it is better to set the content higher. When it is important to lower temperature solubility, if the content is set higher, the effect is higher. When T _NI is important, If the content is set higher, the effect is higher. Moreover, when the case of dripping marks or afterimage characteristics is improved, it is preferable to set the range of the content in the middle.

Relative to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by formula (N-1-22) is 1%, 5%, 10%, 13%, and 15%. 17%, 20%. With respect to the total amount of the composition of the present invention, the upper limit of the preferred content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, and 15%. 13%, 10%, and 5%.

The compound represented by the general formula (N-1-22) is preferably a compound selected from the compound group represented by the formula (N1-2-22.1) to the formula (N-1-22.12), and more preferably The compound represented by the formulae (N-1-2-2) to (N-1-2-22.5) is preferably a compound represented by the formulae (N-1-2-2) to (N-1-2-2).

The compound represented by general formula (N-3) is preferably a compound selected from the group of compounds represented by general formula (N-3-2).

(In the formula, R ^N321 and R ^N322 each independently represent the same meaning as R ^N11 and R ^N12 in the general formula (N-3).)
R ^N321 and R ^{N322 are} preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and more preferably propyl or pentyl.

The compound represented by the general formula (N-3-2) may be used alone, but may be used in combination of two or more kinds. The types of compounds that can be combined are not particularly limited, and they can be used in appropriate combinations according to the properties required for low temperature solubility, transfer temperature, electrical reliability, birefringence, and the like. The type of the compound to be used is, for example, one embodiment of the present invention, two types, three types, four types, or five or more types.

When it is important to improve Δε, it is better to set the content higher. When it is important to lower temperature solubility, if the content is set higher, the effect is higher. When T _NI is important, If the content is set higher, the effect is higher. Moreover, when the case of dripping marks or afterimage characteristics is improved, it is preferable to set the range of the content in the middle.

With respect to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by formula (N-3-2) is 3%, 5%, 10%, 13%, and 15%. It is 17%, 20%, 23%, 25%, 27%, 30%, 33%, and 35%. With respect to the total amount of the composition of the present invention, the upper limit of the preferred content is 50%, 40%, 38%, 35%, 33%, 30%, 28%, and 25%. It is 23%, 20%, 18%, 15%, 13%, 10%, 8%, 7%, 6%, and 5%.

In addition, the compound represented by the general formula (N-3-2) is preferably a compound selected from the group of compounds represented by the formulae (N-3-2.1) to (N-3-2.3).

It contains "at least one of Z ^N11 and Z ^{N12 in} the compounds represented by the general formulae (N-1), (N-2) and (N-3) contained in the liquid crystal composition is a linking group other than a single bond At least one of Z ^N21 and Z ^N22 is a linking group other than a single bond, and at least one of Z ^N31 and Z ^N32 is a linking group other than a single bond "is more preferable, and it preferably contains" Z ^N11 and Z At least one of ^N12 is a compound represented by the general formula (N-1) of a linking group other than a single bond. "

The compound represented by the general formula (N-1), in which at least one of Z ^N11 and Z ^N12 is a linking group other than a single bond, is preferably the general formula (N-1d), (N-1e), and (N- The compound represented by 1f) is preferably a compound represented by general formulae (N-1d) and (N-1e), and more preferably a compound represented by general formula (N-1d).

In addition, the general formulae (N-1-10), (N-1-11), (N-1-12), (N-1-13), (N-1-14), and (N- 1-15), (N-1-16), (N-1-17), (N-1-18), (N-1-20), (N-1-21), and (N-3-3) 2) The compound represented by the formula is preferably a general formula (N-1-10), (N-1-11), (N-1-12), (N-1-13), (N-1-18 ), (N-1-20) and (N-1-21), preferably the compounds represented by the general formulae (N-1-10), (N-1-11), (N-1-18) The compounds represented by (N-1-20) and (N-1-21) are preferably those represented by the general formulae (N-1-10), (N-1-11), and (N-1-18). Represented compounds.

The total content of the compounds represented by the general formulae (N-1), (N-2), and (N-3) among the total contents of the compounds having a negative dielectric anisotropy is preferably 80% or more, and more preferably 85% or more, preferably 87% or more, preferably 90% or more, preferably 93% or more, preferably 96% or more, preferably 98% or more, and preferably substantially 100% or more. "Substantially" means compounds other than impurities and the like which are unintentionally contained at the time of manufacture.

At least one of Z ^N11 and Z ^{N12 in} the compounds represented by the general formulae (N-1), (N-2) and (N-3) contained in the liquid crystal composition is a linking group other than a single bond, At least one of Z ^N21 and Z ^{N22 is} a linking group other than a single bond, and at least one of Z ^N31 and Z ^{N32 is} a linking group other than a single bond. The total content of the compounds is relative to the general formulae (N-1), (N- The total content of the compounds represented by 2) and (N-3) is preferably 50 to 95%, preferably 60 to 90%, preferably 65 to 90%, and more preferably 70 to 90%.

The total content of the compound in which "at least one of Z ^N11 and Z ^{N12 in} the compound represented by the general formula (N-1) is a linking group other than a single bond" contained in the liquid crystal composition is relative to the general formula (N- 1) The total content of the compounds represented by (N-2) and (N-3) is preferably 50 to 95%, preferably 60 to 90%, preferably 65 to 90%, and preferably 70 to 90%.

The total content of the compounds represented by the general formulae (N-1-10) and (N-1-11) contained in the liquid crystal composition is relative to the general formulae (N-1), (N-2), and (N- 3) The total content of the compound represented is preferably 50 to 95%, preferably 60 to 90%, more preferably 65 to 90%, and more preferably 70 to 90%.
The total content of a compound in which at least one of Z ^N11 and Z ^{N12 in} the compound represented by the general formula (N-1) contained in the liquid crystal composition is a linking group other than a single bond is relative to the general formula (N-1) The total content of the compounds represented by (N-2) and (N-3) is preferably 50 to 95%, preferably 60 to 90%, preferably 65 to 90%, and preferably 70 to 90%. .

Liquid crystal whose total content of the compound represented by the general formula (N-1d) is 50 to 95% relative to the total content of the compounds represented by the general formulas (N-1), (N-2), and (N-3)组合 物。 Composition.

At least one of Z ^N11 and Z ^{N12 in} the compound represented by the general formula (N-1) relative to the total content of the compound represented by the general formula (N-1), (N-2), and (N-3) The lower limit of the content of the compound other than the single bond and the content of the compound represented by the general formula (N-1d) is preferably 50%, 60%, 65%, and 70%. Similarly, the preferred upper limit 値 is 88%, 86%, 82%, 78%, 75%, and 72%.

Relative to the total content of the compounds represented by the general formulae (N-1), (N-2), and (N-3), the general formulae (N-1-10), (N-1-11), and (N- The preferred lower limit of the content of the compound represented by 1-18) is 50%, 60%, 65%, and 70%. Similarly, the preferred upper limit 値 is 88%, 86%, 82%, 78%, 75%, and 72%.

By adjusting the above content, when a liquid crystal display element is produced using the liquid crystal composition of the present invention, the liquid crystal composition of the present invention preferably contains one or two or more compounds represented by the general formula (L). The compound represented by the general formula (L) corresponds to a compound having a substantially neutral dielectric property (the value of Δε is −2 to 2). Therefore, it is preferable to set the number of polar groups such as halogen in the molecule to 2 or less, to set it to 1 or less, and to set it to not.

(In the formula, R ^L1 and R ^L2 each independently represent an alkyl group having 1 to 8 carbon atoms. One of the alkyl groups or two or more non-adjacent -CH ₂ -may each be independently -CH = CH-, -C≡C-, -O-, -CO-, -COO- or -OCO-,
n ^L1 means 0, 1, 2 or 3,
A ^L1 , A ^L2 and A ^L3 each independently represent a group selected from the group consisting of the following (a), (b), (c):
(A) 1,4-Cyclohexyl (one -CH ₂ -or two or more -CH ₂ -which are not contiguous in this group may be replaced by -O-)
(B) 1,4-phenylene (one in this group -CH = or two or more non-adjacent -CH = can be replaced by -N =) and (c) naphthalene-2,6 -Diyl, 1,2,3,4-tetrahydronaphthalene-2,6-diyl or decahydronaphthalene-2,6-diyl (existing in naphthalene-2,6-diyl or 1,2,3 1, 4-tetrahydronaphthalene-2,6-diyl -CH = or two or more non-adjacent -CH = can be replaced by -N =),
The above-mentioned groups (a), (b) and (c) may each be independently substituted by a cyano group, a fluorine atom or a chlorine atom,
Z ^L1 and Z ^L2 each independently represent a single bond, -CH ₂ CH ₂ -,-(CH ₂ ) _4- , -OCH _2- , -CH ₂ O-, -COO-, -OCO-, -OCF _2- , -CF ₂ O-, -CH = N-N = CH-, -CH = CH-, -CF = CF-, or -C≡C-,
When n ^L1 is 2 or 3 and there are multiple A ^L2 cases, they may be the same or different. When n ^L1 is 2 or 3 and there are multiple Z ^L3 cases, they may be the same or they may be the same. Different, but does not include compounds represented by the general formulae (N-1), (N-2) and (N-3))
The compounds represented by the general formula (L) may be used alone or in combination. The types of compounds that can be combined are not particularly limited, and can be appropriately combined and used according to desired properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence. The type of the compound to be used is, for example, one type of one embodiment of the present invention. Or in another embodiment of the present invention, there are two kinds, three kinds, four kinds, five kinds, six kinds, seven kinds, eight kinds, nine kinds, and ten kinds or more.

In the composition of the present invention, the content of the compound represented by the general formula (L) must be based on low-temperature solubility, transfer temperature, electrical reliability, birefringence, process compatibility, drip marks, afterimages, The required properties such as dielectric anisotropy are appropriately adjusted.

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

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

When reliability is taken into consideration, R ^L1 and R ^{L2 are} preferably both alkyl. When attention is paid to reducing the volatility of the compound, alkoxy is preferred. When viscosity is lowered, it is better. At least one is alkenyl.

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

Regarding R ^L1 and R ^L2 , when the ring structure to which they are bonded is a phenyl group (aromatic), it is preferably an alkyl group having 1 to 5 carbon atoms and a linear group which are each independently linear When the alkoxy group having 1 to 4 carbon atoms and the alkenyl group having 4 to 5 carbon atoms are bonded to a saturated ring structure such as cyclohexane, piperan, and dioxane, Preferred are each independently a linear alkyl group having 1 to 5 carbon atoms, a linear alkyl group having 1 to 4 carbon atoms, and a linear alkyl group having 2 to 5 carbon atoms. In order to stabilize the nematic phase, when carbon atoms are present, the total number of oxygen atoms is preferably 5 or less, and preferably linear.

The alkenyl group is preferably a group selected from the group consisting of any one of the formulae (R1) to (R5) (the black dots in each formula represent carbon atoms in the ring structure).

When n ^L1 attaches importance to the response speed, it is preferably 0. In order to improve the upper limit temperature of the nematic phase, it is preferably 2 or 3. In order to achieve such a balance, it is preferably 1. In addition, in order to satisfy the required characteristics, it is preferable to use a combination of compounds having different values as a composition.

When it is required to increase Δn, A ^L1 , A ^L2, and A ^{L3 are} preferably aromatic. In order to improve the response speed, it is preferably aliphatic, and each independently represents trans-1,4-cyclohexyl. , 1,4-phenylene, 2-fluoro-1,4-phenylene, 3-fluoro-1,4-phenylene, 3,5-difluoro-1,4-phenylene, 1, 4-cyclohexenyl, 1,4-bicyclo [2.2.2] octyl, piperidine-1,4-diyl, naphthalene-2,6-diyl, decahydronaphthalene-2,6--2 Or 1,2,3,4-tetrahydronaphthalene-2,6-diyl, more preferably the following structure,

More preferably, it means trans-1,4-cyclohexyl or 1,4-phenylene.

When Z ^L1 and Z ^L2 emphasize the response speed, a single bond is preferred.

The compound represented by the general formula (L) preferably has zero or one halogen atom in the molecule.

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

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

(In the formula, R ^L11 and R ^L12 each independently represent the same meaning as R ^L1 and R ^L2 in the general formula (L))
R ^L11 and R ^{L12 are} preferably a linear alkyl group having 1 to 5 carbon atoms, a linear alkyl group having 1 to 4 carbon atoms, and a linear alkenyl group having 2 to 5 carbon atoms. .

The compound represented by the general formula (L-1) may be used alone, or two or more compounds may be used in combination. The types of compounds that can be combined are not particularly limited, and they can be used in appropriate combinations according to the properties required for low temperature solubility, transfer temperature, electrical reliability, birefringence, and the like. The type of the compound to be used is, for example, one embodiment of the present invention, two types, three types, four types, or five or more types.

With respect to the total amount of the composition of the present invention, the lower limit of the preferred content is 1%, 2%, 3%, 5%, 7%, 10%, 15%, and 20%. 25%, 30%, 35%, 40%, 45%, 50%, and 55%. With respect to the total amount of the composition of the present invention, the upper limit of the preferred content is 95%, 90%, 85%, 80%, 75%, 70%, 65%, and 60%, 55%, 50%, 45%, 40%, 35%, 30%, and 25%.

When the viscosity of the composition of the present invention is kept low and a composition with a fast response speed is required, it is preferable that the above-mentioned lower limit value is high and the upper limit value is high. In addition, when the Tni of the composition of the present invention is kept high and a composition with good temperature stability is required, it is preferable that the above-mentioned lower limit value is an intermediate value, and the upper limit value is an intermediate value. 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 lower and the upper limit value is lower.

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

(In the formula, R ^L12 has the same meaning as that in the general formula (L-1).)
The compound represented by the general formula (L-1-1-1) is preferably a compound selected from the group of compounds represented by the formula (L-1-1.1) to the formula (L-1-1.3), and more preferably the formula ( The compound represented by L-1-1.2) or formula (L-1-1.3) is particularly preferably the compound represented by formula (L-1-1.3).

With respect to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by the formula (L-1 to 1.3) is 1%, 2%, 3%, 5%, and 7%. Is 10%. With respect to the total amount of the composition of the present invention, the upper limit of the preferred content is 20%, 15%, 13%, 10%, 8%, 7%, 6%, and 5%. Is 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 (L1-2).

(In the formula, R ^L12 has the same meaning as that in the general formula (L-1).)
With respect to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by formula (L1-2) is 1%, 5%, 10%, 15%, and 17%. It is 20%, 23%, 25%, 27%, 30%, and 35%. With respect to the total amount of the composition of the present invention, the upper limit of the preferred content is 60%, 55%, 50%, 45%, 42%, 40%, 38%, 35%, It was 33% and 30%.

In addition, the compound represented by the general formula (L1-2) is preferably a compound selected from the compound group represented by the formula (L1-2-2.1) to the formula (L-1-2.4), and more preferably Compounds represented by the formula (L-1-2.2) to (L-1-2.4). In particular, the compound represented by the formula (L-1-2) is preferable because the response speed of the composition of the present invention is particularly improved. In addition, when Tni having a higher response speed is required, it is preferable to use a compound represented by the formula (L-1-2.3) or the formula (L-1-2.4). It is not recommended to set the content of the compound represented by the formula (L-1-2.3) and the formula (L-1-2.4) to 30% or more in order to make the solubility at low temperature good.

Relative to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by the formula (L-1-2) is 10%, 15%, 18%, 20%, and 23%. 25%, 27%, 30%, 33%, 35%, 38%, and 40%. With respect to the total amount of the composition of the present invention, the upper limit of the preferred content is 60%, 55%, 50%, 45%, 43%, 40%, 38%, 35%, It was 32%, 30%, 27%, 25%, and 22%.

Relative 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-1-1.3) and the compound represented by the formula (L-1-2.2) is 10%, which is 15%, 20%, 25%, 27%, 30%, 35%, and 40%. With respect to the total amount of the composition of the present invention, the upper limit of the preferred content is 60%, 55%, 50%, 45%, 43%, 40%, 38%, 35%, It was 32%, 30%, 27%, 25%, and 22%.

The compound represented by the general formula (L-1) is preferably a compound selected from the group of compounds represented by the general formula (L1-3).

( ^Wherein 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 alkyl group having 1 to 4 carbon atoms, and a linear alkyl group having 2 to 5 carbon atoms. .

With respect to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by the formula (L1-3) is 1%, 5%, 10%, 13%, and 15%. It was 17%, 20%, 23%, 25%, and 30%. With respect to the total amount of the composition of the present invention, the upper limit of the preferred content is 60%, 55%, 50%, 45%, 40%, 37%, 35%, 33%, 30%, 27%, 25%, 23%, 20%, 17%, 15%, 13%, and 10%.
In addition, the compound represented by the general formula (L1-3) is preferably a compound selected from the compound group represented by the formula (L-1-3.1) to the formula (L-1-3.13), and more preferably The 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. In addition, when a high Tni is required more than the response speed, it is preferable to use the formula (L-1-3-), the formula (L-1-3-3.4), the formula (L-1-3.11), and the formula (L-1- 3.12). The total content of the compounds represented by formula (L-1-3), formula (L-1-3-3.4), formula (L-1-3.11), and formula (L-1-3.13) is not recommended for low-temperature The solubility is good and it is set at 20% or more.

With respect to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by the formula (L-3.1) is 1%, 2%, 3%, 5%, and 7%. 10%, 13%, 15%, 18%, and 20%. The upper limit of the preferred content relative to the total amount of the composition of the present invention is 20%, 17%, 15%, 13%, 10%, 8%, 7%, 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 (L1-4) and / or (L1-5).

( ^Wherein 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 alkyl group having 1 to 4 carbon atoms, and a linear alkenyl group having 2 to 5 carbon atoms. .

With respect to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by formula (L1-4) is 1%, 5%, 10%, 13%, and 15%. It was 17% and 20%. The upper limit of the preferred content relative to the total amount of the composition of the present invention is 25%, 23%, 20%, 17%, 15%, 13%, and 10%.

Relative to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by the formula (L1-5) is 1%, 5%, 10%, 13%, and 15%. It was 17% and 20%. The upper limit of the preferred content relative to the total amount of the composition of the present invention is 25%, 23%, 20%, 17%, 15%, 13%, and 10%.

In addition, the compounds represented by the general formulae (L1-4) and (L1-5) are preferably selected from the compounds represented by the formula (L-1-4.1) to the formula (L-1-5.3) The compound in the group is preferably a compound represented by the formula (L-1-4.2) or the formula (L-1-5.2).

With respect to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by the formula (L-1-4) is 1%, 2%, 3%, 5%, and 7%. 10%, 13%, 15%, 18%, and 20%. The upper limit of the preferred content relative to the total amount of the composition of the present invention is 20%, 17%, 15%, 13%, 10%, 8%, 7%, and 6%.

The preferred combination is selected from the group consisting of formula (L-1.3-1.3), formula (L-1-2-2.2), formula (L-1-1-3.1), formula (L-1-3-), formula (L-1-3-3.4), Among the compounds represented by the formula (L-1.3.11) and the formula (L-1.3.12), two or more compounds are preferred, and the combination is preferably selected from the group consisting of the formula (L-1-1.3) and the formula (L-1-2.2). ), Two or more compounds among the compounds represented by the formula (L-1-3.1), the formula (L-1-3.3), the formula (L-1-3.4), and the formula (L-1-4.2). The lower limit of the preferable content of the total content of other compounds is 1%, 2%, 3%, 5%, 7%, 10%, and 13 relative to the total composition of the present invention. % Is 15%, is 18%, is 20%, is 23%, is 25%, is 27%, is 30%, is 33%, and is 35%, and the upper limit is relative to the composition of the present invention. Total, 80%, 70%, 60%, 50%, 45%, 40%, 37%, 35%, 33%, 30%, 28%, 25% Is 23% and 20%. When the reliability of the composition is taken into consideration, a preferable combination is selected from two compounds selected from the group consisting of formula (L-1-3.1), formula (L-1-3.3), and formula (L-1-3.4). When the response speed of the above-mentioned compounds is important, the above compounds are preferably combined with two or more compounds selected from the compounds represented by formula (L-1-1.3) and formula (L-1-2.2).
The compound represented by general formula (L-1) is preferably a compound selected from the group of compounds represented by general formula (L-1-6).

( ^Wherein R ^L17 and R ^L18 each independently represent a methyl group or a hydrogen atom)
Relative to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by the formula (L-6) is 1%, 5%, 10%, 15%, and 17%. It is 20%, 23%, 25%, 27%, 30%, and 35%. With respect to the total amount of the composition of the present invention, the upper limit of the preferred content is 60%, 55%, 50%, 45%, 42%, 40%, 38%, 35%, It was 33% and 30%.

The compound represented by the general formula (L-1-6) is preferably a compound selected from the compound group represented by the formula (L-1-6.1) to the formula (L-1-6.3).

The compound represented by the 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} preferably an alkyl group having 1 to 5 carbon atoms and an alkenyl group having 4 to 5 carbon atoms or Alkoxy having 1 to 4 carbon atoms.

The compound represented by the general formula (L-2) may be used alone, or two or more compounds may be used in combination. The types of compounds that can be combined are not particularly limited, and they can be used in appropriate combinations according to the properties required for low temperature solubility, transfer temperature, electrical reliability, birefringence, and the like. The type of the compound to be used is, for example, one embodiment of the present invention, two types, three types, four types, or five or more types.

When attention is paid to the solubility at low temperature, the effect is high if the content is set to be higher, and conversely, when the content is set to be lower, the effect is high. Moreover, when the case of dripping marks or afterimage characteristics is improved, it is preferable to set the range of the content in the middle.

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

The compound represented by the general formula (L-2) is preferably a compound selected from the compound group represented by the formula (L-2.1) to the formula (L-2.6), and more preferably the formula (L-2.1). , Compounds represented by formula (L-2.3), formula (L-2.4) and formula (L-2.6).

The compound represented by the 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 the general formula (L))
R ^L31 and R ^L32 are each 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.

The compound represented by the general formula (L-3) may be used alone, or two or more compounds may be used in combination. The types of compounds that can be combined are not particularly limited, and they can be used in appropriate combinations according to the properties required for low temperature solubility, transfer temperature, electrical reliability, birefringence, and the like. The type of the compound to be used is, for example, one embodiment of the present invention, two types, three types, four types, or five or more types.

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

When a high birefringence is obtained, if the content is set higher, the effect is high. On the contrary, when a high Tni is valued, if the content is set lower, the effect is high. Moreover, when the case of dripping marks or afterimage characteristics is improved, it is preferable to set the range of the content in the middle.

In addition, the compound represented by the general formula (L-3) is preferably a compound selected from the compound group represented by the formula (L-3.1) to the formula (L-3.7), and more preferably the formula (L-3.2) To the compound represented by formula (L-3.5).

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

(In the formula, R ^L41 and R ^L42 each independently represent the same meaning as R ^L1 and R ^L2 in the 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} preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 4 to 5 carbon atoms or Alkoxy having 1 to 4 carbon atoms.
The compound represented by the general formula (L-4) may be used alone, but may be used in combination of two or more kinds. The types of compounds that can be combined are not particularly limited, and they can be used in appropriate combinations according to the properties required for low temperature solubility, transfer temperature, electrical reliability, birefringence, and the like. The type of the compound to be used is, for example, one embodiment of the present invention, two types, three types, four types, or five or more types.

In the composition of the present invention, the content of the compound represented by the general formula (L-4) must be based on low-temperature solubility, transfer temperature, electrical reliability, birefringence, process compatibility, drip marks, and residuals. The properties required for film, dielectric anisotropy, etc. are appropriately adjusted.

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

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

It may contain a compound represented by the formula (L-4.1) or may contain a compound represented by the formula (L-4.2) according to required properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence. Or may contain both the compound represented by formula (L-4.1) and the compound represented by formula (L-4.2), or may also contain all compounds represented by formula (L-4.1) to formula (L-4.3) . The lower limit of the preferred content of the compound represented by formula (L-4.1) or formula (L-4.2) is 3%, 5%, 7%, and 9% relative to the total amount of the composition of the present invention. , 11%, 12%, 13%, 18%, 21%, the preferred upper limit is 45%, 40%, 35%, 30%, 25%, 23%, It is 20%, 18%, 15%, 13%, 10%, and 8%.

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

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

It may contain a compound represented by the formula (L-4.4) or may contain a compound represented by the formula (L-4.5) according to required properties such as low-temperature solubility, transfer temperature, electrical reliability, and birefringence. Or may contain both the compound represented by formula (L-4.4) and the compound represented by formula (L-4.5).

The lower limit of the preferred content of the compound represented by formula (L-4.4) or formula (L-4.5) is 3%, 5%, 7%, and 9% relative to the total amount of the composition of the present invention. It is 11%, 12%, 13%, 18%, and 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 included, the lower limit of the preferable content of the two compounds with respect to the total amount of the composition of the present invention is 15 %, 19%, 24%, 30%, the preferred upper limit is 45%, 40%, 35%, 30%, 25%, 23%, 20%, 18% Is 15% and 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 particularly preferably a compound represented by formula (L-4.9).

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

(In the formula, R ^L51 and R ^L52 each independently represent the same meaning as R ^L1 and R ^L2 in 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} preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 4 to 5 carbon atoms or Alkoxy having 1 to 4 carbon atoms.

The compound represented by the general formula (L-5) may be used alone, or two or more compounds may be used in combination. The types of compounds that can be combined are not particularly limited, and they can be used in appropriate combinations according to the properties required for low temperature solubility, transfer temperature, electrical reliability, birefringence, and the like. The type of the compound to be used is, for example, one embodiment of the present invention, two types, three types, four types, or five or more types.

In the composition of the present invention, the content of the compound represented by the general formula (L-5) must be based on low-temperature solubility, transfer temperature, electrical reliability, birefringence, process compatibility, drip marks, and residuals. The properties required for film, dielectric anisotropy, etc. are appropriately adjusted.

Relative to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by formula (L-5) is 1%, 2%, 3%, 5%, 7%, and 10 %, 14%, 16%, 20%, 23%, 26%, 30%, 35%, 40%. With respect to the total amount of the composition of the present invention, the upper limit of the preferred content of the compound represented by formula (L-5) is 50%, 40%, 35%, 30%, 20%, and 15%, 10%, and 5%.
The compound represented by the general formula (L-5) is preferably a compound represented by the formula (L-5.1) or (L-5.2), and particularly preferably a compound represented by the formula (L-5.1).

The lower limit of the preferable content of these compounds relative to the total composition of the present invention is 1%, 2%, 3%, 5%, and 7%. The upper limit of the preferred 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 relative to the total composition of the present invention is 1%, 2%, 3%, 5%, and 7%. The upper limit of the preferred 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 compound group represented by the formula (L-5.5) to the formula (L-5.7), and particularly preferably the compound represented by the formula (L-5.7) Represented compounds.

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

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

(In the formula, R ^L61 and R ^L62 each independently represent the same meaning as R ^L1 and R ^L2 in the general formula (L), and X ^L61 and X ^L62 each independently represent a hydrogen atom or a fluorine atom.)
R ^L61 and R ^{L62 are} preferably each independently an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably one of X ^L61 and X ^L62 is a fluorine atom, and the other This is a hydrogen atom.

The compound represented by the general formula (L-6) may be used alone, or two or more compounds may be used in combination. The types of compounds that can be combined are not particularly limited, and they can be used in appropriate combinations according to the properties required for low temperature solubility, transfer temperature, electrical reliability, birefringence, and the like. The type of the compound to be used is, for example, one embodiment of the present invention, two types, three types, four types, or five or more types.

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

The compound represented by general formula (L-6) is preferably a compound represented by formula (L-6.1) to formula (L-6.9).

The types of compounds that can be combined are not particularly limited, and it is preferred that these compounds contain one to three kinds, and more preferably one to four kinds. In addition, since the selected compound has a wide molecular weight distribution and is also effective for solubility, it is preferable to select one compound from the compound represented by formula (L-6.1) or (L-6.2), for example, from formula (L-6.4) Or a compound represented by (L-6.5), one compound is selected from the compound represented by formula (L-6.6) or formula (L-6.7), one compound is selected from formula (L-6.8) or (L-6.9) For the compound represented by), select one compound, and then combine them appropriately. Among them, the compounds represented by formula (L-6.1), formula (L-6.3), formula (L-6.4), formula (L-6.6) and formula (L-6.9) are preferably contained.

The compound represented by the general formula (L-6) is, for example, preferably a compound represented by the formula (L-6.10) to a formula (L-6.17). Among them, the compound represented by the formula (L-6.11) is preferable. Compound.

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

The compound represented by the general formula (L-7) is the following compound.

(In the formula, R ^L71 and R ^L72 each independently represent the same meaning as R ^L1 and R ^L2 in the general formula (L), and A ^L71 and A ^L72 each independently represent the same as A ^L2 and A ^L2 in the general formula (L). A ^{L3 has the} same meaning. The hydrogen atoms on A ^L71 and A ^L72 may be independently replaced by fluorine atoms. Z ^L71 represents the same meaning as Z ^L2 in the general formula (L). X ^L71 and X ^L72 are each independently Represents a fluorine atom or a hydrogen atom)
In the formula, R ^L71 and R ^{L72 are} preferably each independently an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, A ^L71 and A ^{L72 is} preferably each independently 1,4-cyclohexyl or 1,4-phenylene. The hydrogen atoms on A ^L71 and A ^L72 may also be independently replaced by fluorine atoms. Z ^{L71 is} preferably a single bond. Or -COO- is preferably a single bond, and X ^L71 and X ^{L72 are} preferably a hydrogen atom.

The types of compounds that can be combined are not particularly limited, and can be combined according to the required properties such as low temperature solubility, transfer temperature, electrical reliability, birefringence, and the like. The type of the compound to be used is, for example, one type, two types, three types, and four types as one embodiment of the present invention.

In the composition of the present invention, the content of the compound represented by the general formula (L-7) must be based on low-temperature solubility, transfer temperature, electrical reliability, birefringence, process compatibility, drip marks, and residuals. The properties required for film, dielectric anisotropy, etc. are appropriately adjusted.

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

When the composition of the present invention is expected to have a high Tni embodiment, it is preferable to increase the content of the compound represented by formula (L-7) a little. When a low viscosity embodiment is desired, the content is preferably increased. a little less.

The compound represented by general formula (L-7) is preferably a compound represented by formula (L-7.1) to formula (L-7.4), and more preferably a compound represented by formula (L-7.2).

The compound represented by general formula (L-7) is preferably a compound represented by formula (L-7.11) to formula (L-7.13), and more preferably a compound represented by formula (L-7.11).

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 preferred.

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

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

The compound represented by the general formula (L-7) is preferably a compound represented by the formula (L-7.51) to (L-7.53).

With respect to the total amount of the composition of the present invention, the lower limit of the preferable total content of the compounds represented by the general formulae (i), (ii), (L) and (N) is 80%, 85%, 88%, 90%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, 99%, 100%. The upper limit of the preferred content is 100%, 99%, 98%, and 95%.

With respect to the total amount of the composition of the present invention, the general formulae (i), (ii), (L-1) to (L-7), and (M-1) to (M-8) are represented. The lower limit of the total preferred content of the compound is 80%, 85%, 88%, 90%, 92%, 93%, 94%, 95%, 96%, 97 %, 98%, 99%, 100%. The upper limit of the preferred content is 100%, 99%, 98%, and 95%.

The composition of the present invention is preferably a compound that does not contain a structure in which oxygen atoms such as a peroxy (-CO-OO-) structure are bonded to each other.

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

In the case where the stability using UV irradiation is important, it is preferable that the content of the compound substituted by the chlorine atom is 15% or less with respect to the total mass of the composition, preferably 10% or less, and more preferably The content is 8% or less, more preferably 5% or less, more preferably 3% or less, and still more preferably substantially no content.

It is preferable that the content of the compound having a six-membered ring structure in the molecule is more, and it is preferable that the content of the compound having a six-membered ring structure in the molecule is 80 relative to the total mass of the composition. % Or more, more preferably 90% or more, still more preferably 95% or more, and most preferably a composition consisting essentially of a compound in which the ring structure in the molecule is a six-membered ring.

In order to suppress deterioration due to oxidation of the composition, it is preferable to make the content of the compound having a cyclohexenyl group as a ring structure small, and it is preferable to set the content of the compound having a cyclohexenyl group to The total mass of the composition is 10% or less, preferably 8% or less, more preferably 5% or less, more preferably 3% or less, and still more preferably substantially no content.

When the improvement of viscosity and the improvement of Tni are emphasized, it is preferable that the content of the compound having a 2-methylbenzene-1,4-diyl group in which a hydrogen atom can be replaced with a halogen is small, and it is preferable The content of the compound having the 2-methylbenzene-1,4-diyl group in the molecule is set to 10% or less, preferably 8% or less, and more preferably to the total mass of the composition. The content is 5% or less, preferably 3% or less, and more preferably substantially no content.

The term “substantially free” in the present case means a meaning that is not contained unless it is intentionally included.

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

The average elastic constant (K _AVG ) of the liquid crystal composition used in the present invention is preferably 10 to 25, and as the lower limit value, it is preferably 10, preferably 10.5, preferably 11, and preferably 11.5. 12 is preferred, 12.3 is preferred, 12.5 is preferred, 12.8 is preferred, 13 is preferred, 13.3 is preferred, 13.3 is preferred, 13.5 is preferred, 13.8 is preferred, 14 is preferred, 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, 16.3 is preferred, 16.5 is preferred, 16.8 is preferred, 17 is preferred, 17.3 is preferred, 17.5 is preferred, 17.8 is preferred, 18 is preferred; as its upper limit, 25 is preferred, 24.5 is preferred, 24 is preferred, 24 is preferred, 23.5 is preferred , Preferably 23, preferably 22.8, preferably 22.5, preferably 22.3, preferably 22, preferably 21.8, preferably 21.5, preferably 21.3, preferably 21, and preferably 20.8 , Preferably 20.5, preferably 20.3, preferably 20, preferably 19.8, preferably 19.5, preferably 19.3, preferably 19, preferably 18.8, preferably 18.5, and preferably 18.3 , Preferably 18, preferably 17.8, more preferably 17.5, 17.3, preferably 17. When it is important to reduce power consumption, it is effective to suppress the amount of light from the backlight. The liquid crystal display element preferably has a higher light transmittance. Therefore, it is preferable to set the value of K _{AVG to} be low. When the improvement of response speed is important, it is preferable to set the value of K _{AVG to} be high.

The polymerizable compound of the present invention is preferably a compound represented by the following general formula (P).

(In the above general formula (P), R ^p1 represents a hydrogen atom, a fluorine atom, a cyano group, a hydrogen atom, a hydrogen atom which may be substituted by a halogen atom, an alkyl group having 1 to 15 carbon atoms, and a hydrogen atom may also be a halogen atom. Substituted alkoxy groups having 1 to 15 carbon atoms, hydrogen atoms which may be substituted by halogen atoms, alkenyl groups having 1 to 15 carbon atoms, and hydrogen atoms which may be substituted by halogen atoms. Basis or -Sp ^p2 -P ^{p 2} ,
P ^p1 and P ^p2 each independently represent any one of the general formulae (P ^p1 -1) to (P ^p1 -9),

(In the formula, R ^p11 and R ^p12 each independently represent a hydrogen atom, an alkyl group having 1 to 5 carbon atoms or a halogenated alkyl group having 1 to 5 carbon atoms, and W ^p11 represents a single bond, -O-, -COO- Or methylene, t ^p11 represents 0, 1 or 2, when there are multiple R ^p11 , R ^p12 , W ^p11 and / or t ^p11 in the molecule, they may be the same or different)
Sp ^p1 and Sp ^p2 each independently represent a single bond or a spacer,
Z ^p1 and Z ^p2 each independently represent a single bond, -O-, -S-, -CH _2- , -OCH _2- , -CH ₂ O-, -CO-, -C ₂ H _4- , -COO- , -OCO-, -OCOOCH _2- , -CH ₂ OCOO-, -OCH ₂ CH ₂ O-, -CO-NR ^ZP1- , -NR ^ZP1 -CO-, ^-SCH _2- , -CH ₂ S-,- CH = CR ^ZP1 -COO-, -CH = CR ^ZP1 -OCO-, -COO-CR ^ZP1 = CH-, -OCO-CR ^ZP1 = CH-, -COO-CR ^ZP1 = CH-COO-, -COO-CR ^ZP1 = CH-OCO-, -OCO-CR ^ZP1 = CH-COO-, -OCO-CR ^ZP1 = CH-OCO-,-(CH ₂ ) _z -COO-,-(CH ₂ ) ₂ -OCO-,- OCO- (CH ₂ ) ₂ -,-(C = O) -O- (CH ₂ ) _2- , -CH = CH-, -CF = CF-, -CF = CH-, -CH = CF-,- CF _2- , --CF ₂ O-, --OCF _2- , --CF ₂ CH _2- , --CH ₂ CF _2- , --CF ₂ CF _2- , or --C≡C-(where, R ^{ZP1 is} independently Represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and when there is a plurality of R ^ZP1 in the molecule, they may be the same or different)
A ^p2 represents 1,4-phenylene, 1,4-cyclohexyl, anthracene-2,6-diyl, phenanthrene-2,7-diyl, pyridine-2,5-diyl, pyrimidine-2, 5-diyl, naphthalene-2,6-diyl, indane-2,5-diyl, 1,2,3,4-tetrahydronaphthalene-2,6-diyl or 1,3-dioxane -2,5-diyl, A ^{p2 is} unsubstituted or can be alkyl having 1 to 12 carbon atoms, halogenated alkyl having 1 to 12 carbon atoms, alkoxy having 1 to 12 carbon atoms, carbon atom 1 to 12 halogenated alkoxy, halogen atom, cyano, nitro or -Sp ^p2 -P ^p2 substitution,
A ^p1 represents the base represented by (A ^p1 -11) to (A ^p1 -19),

(In the formula, it is bonded to Sp ^p1 or Z ^p1 in ★, and it is bonded to Z ^p1 in ★★. One or two or more hydrogen atoms in the structure can also be alkyl or carbon having 1 to 12 carbon atoms. Halogenated alkyl groups having 1 to 12 carbon atoms, alkoxy groups having 1 to 12 carbon atoms, halogenated alkoxy groups having 1 to 12 carbon atoms, halogen atoms, cyano, nitro, or -Sp ^p2 -P ^p2 substitution )
A ^p3 represents the base represented by (A ^p3 -11) to (A ^p3 -19),

(In the formula, it is bonded to Z ^p2 in ★ and R ^p1 or Z ^p2 in ★. One or more hydrogen atoms in the structure can also be alkyl or carbon having 1 to 12 carbon atoms. Halogenated alkyl groups having 1 to 12 carbon atoms, alkoxy groups having 1 to 12 carbon atoms, halogenated alkoxy groups having 1 to 12 carbon atoms, halogen atoms, cyano, nitro, or -Sp ^p2 -P ^p2 substitution )
m ^p2 and m ^p3 each independently represent 0, 1, 2 or 3, m ^p1 and m ^p4 each independently represent 1, 2 or 3, and there are a plurality of P ^p1 , Sp ^p1 , A ^p1 , Z ^p1 , In the case of Z ^p2 , A ^p3 and / or R ^p1 , they may be the same or different). Moreover, it is preferable to contain 1 type or 2 or more types of this polymerizable monomer.

In the general formula (P) of the present invention, R ^{p1 is} preferably -Sp ^p2 -P ^p2 .

It is preferable that P ^p1 and P ^p2 are each independently of formula (P ^p1 -1) to (P ^p1-3 ), and more preferably (P ^p1 -1).

R ^p11 and R ^p12 are each preferably a hydrogen atom or a methyl group.

m ^p1 + m ^p4 is preferably 2 or more, and more preferably 2 or 3.

Z ^p1 and Z ^p2 are each preferably a single bond, -OCH _2- , -CH ₂ O-, -CO-, -C ₂ H _4- , -COO-, -OCO-, -COOC ₂ H _{4 -, - OCOC 2 H 4 -} , - C 2 H 4 OCO -, - C 2 H 4 COO -, - CH = CH -, - CF 2 -, - CF 2 O -, - (CH 2) 2 -COO -,-(CH ₂ ) ₂ -OCO-, -OCO- (CH ₂ ) _2- , -CH = CH-COO-, -COO-CH = CH-, -OCOCH = CH-, -COO- (CH ₂ ) _2- , -OCF ₂ -or -C≡C-, preferably a single bond, -OCH _2- , -CH ₂ O-, -C ₂ H _4- , -COO-, -OCO-, -COOC _{2 H 4 -, - OCOC 2 H} 4 -, - C 2 H 4 OCO -, - C 2 H 4 COO -, - CH = CH -, - (CH 2) 2 -COO -, - (CH 2) 2 - OCO-, -OCO- (CH ₂ ) _2- , -CH = CH-COO-, -COO-CH = CH-, -OCOCH = CH-, -COO- (CH ₂ ) ₂ -or -C≡C- It is preferred that only one existing in the molecule is -OCH _2- , -CH ₂ O-, -C ₂ H _4- , -COO-, -OCO-, -COOC ₂ H _4- , -OCOC ₂ H ₄ -, -C ₂ H ₄ OCO-, -C ₂ H ₄ COO-, -CH = CH-,-(CH ₂ ) ₂ -COO-,-(CH ₂ ) ₂ -OCO-, -OCO- (CH ₂ ) _2- ,, -CH = CH-COO-, -COO-CH = CH-, -OCOCH = CH-, -COO- (CH ₂ ) ₂ -or -C≡C-, all others are single bonds, preferably molecules Only one of them is -OCH _2- , -CH ₂ O-, -C ₂ H _4- , -COO- or -OCO-, all others are single bonds, preferably all are single bonds.

In addition, it is preferable that only one of Z ^p1 and Z ^p2 existing in the molecule is selected from the group consisting of -CH = CH-COO-, -COO-CH = CH-,-(CH ₂ ) ₂ -COO-,- (CH ₂ ) ₂ -OCO-, -O-CO- (CH ₂ ) _2- , -COO- (CH ₂ ) ₂ -The linking group in the group, the others are single bonds.

Sp ^p1 and Sp ^p2 each independently represents a single bond or an alkylene group having 1 to 30 carbon atoms, and -CH ₂ -in the alkylene group may be -O-as long as oxygen atoms are not directly bonded to each other. -CO-, -COO-, -OCO-, -CH = CH-, or -C≡C-, the hydrogen atom in the alkylene group may also be replaced by a halogen atom, preferably a linear carbon number 1 ~ 10 alkylene or single bond.

A ^{p2 is} preferably 1,4-phenylene, 1,4-cyclohexyl, anthracene-2,6-diyl, phenanthrene-2,7-diyl, or naphthalene-2,6-diyl. It is preferably 1,4-phenylene, 1,4-cyclohexyl, phenanthrene-2,7-diyl, or naphthalene-2,6-diyl. When m ^p2 + m ^p3 is 0, it is more preferably The phenanthrene-2,7-diyl group is preferably 1,4-phenylene or 1,4-cyclohexyl when m ^p2 + + m ^p3 is 1, 2 or 3. In order to improve compatibility with the liquid crystal compound, A ^p2 in the structure of 1 or 2 or more of the hydrogen atoms may be methyl, substituted ethyl, methoxy, ethoxy, or a fluorine atom.

A ^{p1 is} preferably the formula (A ^p1 -15), (A ^p1 -16), (A ^p1 -17), or (A ^p1 -18). In order to improve compatibility with the liquid crystal compound, A ^p1 structure of which 1 or 2 more of the hydrogen atoms may be methyl, substituted ethyl, methoxy, ethoxy, or a fluorine atom.

A ^{p3 is} preferably the formula (A ^p1 -14), (A ^p1 -15), (A ^p1 -16), (A ^p1 -17), or (A ^p1 -18). In order to improve the compatibility with liquid crystal compounds, 1 or more hydrogen atoms in the structure of ^Ap 3 may be substituted by methyl, ethyl, methoxy, ethoxy, or fluorine atoms.

m ^p2 + m ^{p3 is} preferably 0, 1, 2 or 3, and more preferably 1 or 2.

The total content of the compound represented by the general formula (P) is preferably 0.05 to 10%, and more preferably 0.1 to 8% relative to a composition containing the compound represented by the general formula (P) of the present case. The content is preferably 0.1 to 5%, preferably 0.1 to 3%, preferably 0.2 to 2%, more preferably 0.2 to 1.3%, more preferably 0.2 to 1%, and most preferably 0.2. ~ 0.56%.

The lower limit of the preferable total content of the compound represented by the general formula (P) is 0.01%, 0.03%, and 0.05% relative to the composition containing the compound represented by the general formula (P) of the present case. 0.08%, 0.1%, 0.15%, 0.2%, 0.25%, 0.3%.

A preferable upper limit of the total content of the compound represented by the general formula (P) 値 is 10%, 8%, and 5% relative to a composition containing the compound represented by the general formula (P) of the present case. 3%, 1.5%, 1.2%, 1%, 0.8%, 0.5%.

If the content is small, the effect of adding the compound represented by the general formula (P) is difficult to appear, and problems such as weak alignment control of the liquid crystal composition or weakening of the alignment control over time may occur. Problems such as an increase in the amount remaining after hardening, a time-consuming hardening, and a decrease in the reliability of the liquid crystal occur. Therefore, the content is set in consideration of their balance.

The compound represented by general formula (P) is preferably a compound represented by general formula (P-1), general formula (P-2), general formula (P-3), and general formula (P-4).

(Where P ^p11 , P ^p12 , P ^p21 , P ^p22 , P ^p31 , P ^p32 , P ^p41, and P ^p42 each independently have the same meaning as P ^p1 in the general formula (P),
Sp ^p11 , Sp ^p12 , Sp ^p21 , Sp ^p22 , Sp ^p31 , Sp ^p32 , SP ^p41, and SP ^p42 each independently represent the same meaning as Sp ^p1 in General Formula (P),
A ^p11 , A ^p12 , A ^p13 , A ^p21 , A ^p22 , A ^p23 , A ^p32 and A ^p42 each independently represent 1,4-phenylene, 1,4-cyclohexyl, anthracene-2,6--2 Radical, phenanthrene-2,7-diyl, pyridine-2,5-diyl, pyrimidine-2,5-diyl, naphthalene-2,6-diyl, indenane-2,5-diyl, 1, 2,3,4-tetrahydronaphthalene-2,6-diyl or 1,3-dioxane-2,5-diyl, A ^p11 , A ^p12 , A ^p13 , A ^p21 , A ^p22 , A ^p23 , A ^p32 and A ^p42 are each independently unsubstituted or may be an alkyl group having 1 to 12 carbon atoms, a halogenated alkyl group having 1 to 12 carbon atoms, an alkoxy group having 1 to 12 carbon atoms, and 1 carbon atom ~ 12 halogenated alkoxy, halogen atom, cyano, nitro or -Sp ^p2 -P ^p2 in the general formula (P),
A ^p41 has the same meaning as A ^{p1 of the} general formula (P),
A ^p43 has the same meaning as A ^p3 in the general formula (P),
Z ^p21 , Z ^p22 , Z ^p41 and Z ^p42 represent single bonds, -O-, -S-, -CH _2- , -OCH _2- , -CH ₂ O-, -CO-, -C ₂ H _4- , -COO-, -OCO-, -OCOOCH _2- , -CH ₂ OCOO-, -OCH ₂ CH ₂ O-, -CO-NR ^ZP1- , -NR ^ZP1 -CO-, ^-SCH _2- , -CH ₂ S -, -CH = CR ^ZP1 -COO-, -CH = CR ^ZP1 -OCO-, -COO-CR ^ZP1 = CH-, -OCO-CR ^ZP1 = CH-, -COO-CR ^ZP1 = CH-COO-,- COO-CR ^ZP1 = CH-OCO-, -OCO-CR ^ZP1 = CH-COO-, -OCO-CR ^ZP1 = CH-OCO-,-(CH ₂ ) _z -COO-,-(CH ₂ ) ₂ -OCO -, -OCO- (CH ₂ ) ₂ -,-(C = O) -O- (CH ₂ ) _2- , -CH = CH-, -CF = CF-, -CF = CH-, -CH = CF -,-CF ₂ -,-CF ₂ O-,-OCF ₂ -,-CF ₂ CH ₂ -,-CH ₂ CF ₂ -,-CF ₂ CF ₂ -or-C≡C-(where, R ^ZP1 Each independently represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and when there is a plurality of R ^ZP1 in the molecule, they may be the same or different), but At least one of Z ^p21 and Z ^p22 present in the molecule means other than a single bond)
P ^p11 , P ^p12 , P ^p21 , P ^p22 , P ^p31 , P ^p32 , P ^p41, and P ^{p42 are} preferably each independently the same as P ^p1 in the general formula (P) and have the formula (P ^p1 -1) to Any one of the formula (P ^p1-3 ) is preferably (P ^p1-1 ), and R ^p11 and R ^{p12 are} preferably each independently a hydrogen atom or a methyl group.

Sp ^p11 , Sp ^p12 , Sp ^p21 , Sp ^p22 , Sp ^p31 , Sp ^p32 , Sp ^p41, and Sp ^p42 each independently represents a single bond or an alkylene group having 1 to 30 carbon atoms. One of the alkylene groups is -CH ₂ -As long as the oxygen atoms are not directly bonded to each other, they can be replaced by -O-, -CO-, -COO-, -OCO-, -CH = CH-, or -C≡C-, the hydrogen atom in the alkylene group. It may also be substituted with a halogen atom, and is preferably a linear alkylene group having 1 to 10 carbon atoms or a single bond.

A ^p11 , A ^p12 , A ^p13 , A ^p21 , A ^p22 , A ^p23 , A ^p32 and A ^{p42 are} preferably each independently 1,4-phenylene, 1,4-cyclohexyl, anthracene-2, 6-diyl, phenanthrene-2,7-diyl or naphthalene-2,6-diyl, preferably 1,4-phenylene, 1,4-cyclohexyl, phenanthrene-2,7-diyl Or naphthalene-2,6-diyl. In the general formulae (P-1) and (P-2), it is preferable that each is independently 1,4-phenylene or 1,4-cyclohexyl. In order to improve the compatibility with liquid crystal compounds, their structures are One or more of the hydrogen atoms may be substituted by a methyl, ethyl, methoxy, ethoxy or fluorine atom. In the general formula (P-3), phenanthrene-2,7-diyl is preferred. In order to improve the compatibility with liquid crystal compounds, one or more hydrogen atoms in the structure may be methyl, Ethyl, methoxy, ethoxy or fluorine atom substitution.

Z ^{p21 is} preferably a single bond, -OCH _2- , -CH ₂ O-, -CO-, -C ₂ H _4- , -COO-, -OCO-, -COOC ₂ H _4- , -OCOC ₂ H ₄ -, -C ₂ H ₄ OCO-, -C ₂ H ₄ COO-, -CH = CH-, -CF _2- , -CF ₂ O-,-(CH ₂ ) ₂ -COO-,-(CH ₂ ) ₂ -OCO-, -OCO- (CH ₂ ) _2- , -CH = CH-COO-, -COO-CH = CH-, -OCOCH = CH-, -COO- (CH ₂ ) _2- , -OCF ₂ -Or-C≡C-, preferably a single bond, -OCH _2- , -CH ₂ O-, -C ₂ H _4- , -COO-, -OCO-, -COOC ₂ H _4- , -OCOC ₂ H _4- , -C ₂ H ₄ OCO-, -C ₂ H ₄ COO-, -CH = CH-,-(CH ₂ ) ₂ -COO-,-(CH ₂ ) ₂ -OCO-, -OCO- ( CH ₂ ) _2- , -CH = CH-COO-, -COO-CH = CH-, -OCOCH = CH-, -COO- (CH ₂ ) ₂ -or -C≡C-, preferably in the molecule There is only one -OCH _2- , -CH ₂ O-, -C ₂ H _4- , -COO-, -OCO-, -COOC ₂ H _4- , -OCOC ₂ H _4- , -C ₂ H ₄ OCO － 、 － C ₂ H ₄ COO-, -CH = CH-,-(CH ₂ ) ₂ -COO-,-(CH ₂ ) ₂ -OCO-, -OCO- (CH ₂ ) _2- , -CH = CH-COO-, -COO -CH = CH-, -OCOCH = CH-, -COO- (CH ₂ ) ₂ -or -C≡C-, all others are single bonds, and it is preferred that only one existing in the molecule is -OCH ₂ -, -CH ₂ O-, -C ₂ H _4- , -COO- or -OCO-, all others are single bonds, preferably all are single bonds.

In addition, it is preferable that only one of Z ^p21 existing in the molecule is selected from-(CH ₂ ) ₂ -COO-,-(CH ₂ ) ₂ -OCO-, -O-CO- (CH ₂ ) _2- , —COO— (CH ₂ ) ₂ — The linking group in the group, the others are single bonds.

Preferable examples of the compound represented by the general formula (P-1) of the present invention include polymerizable compounds represented by the following formulae (P-1-1) to (P-1-46).

(In the ^{formula, P p11, P p12, Sp} p11 and Sp ^p12 as in the formula (P ^p11 P-1) in the same P ^p12, Sp ^p11 sense and Sp ^p12)
Preferable examples of the compound represented by the general formula (P-2) of the present invention include polymerizable compounds represented by the following formulae (P-2-1) to (P-2-12).

(In the ^{formula, P p21, P p22, Sp} p21 and Sp ^p22 as in the formula (P ^p21 P-2) in the same P ^p22, Sp ^p21 sense and Sp ^p22)
Preferable examples of the compound represented by the general formula (P-3) of the present invention include polymerizable compounds represented by the following formulae (P-3-1) to (P-3-15).

(In the ^{formula, P p31, P p32, Sp} p31 and Sp ^p32 as in the formula (P-3) in the P ^p31, the same P ^p32, Sp ^p31 sense and Sp ^p32)
Preferable examples of the compound represented by the general formula (P-4) of the present invention include polymerizable compounds represented by the following formulae (P-4-1) to (P-4-15).

(In the ^{formula, P p41, P p42, Sp} p41 and Sp ^p42 as in the formula (P ^p41 P-4) in the same P ^p42, Sp ^p41 sense and Sp ^p42)
In order to further provide vertical alignment, the composition of the present invention preferably contains a self-aligning compound. The self-aligning compound is a compound that "controls the alignment of the liquid crystal composition without using conventional liquid crystal alignment films such as polyimide, etc. on one or both of the substrates".

The self-aligning compound is mainly used to be added to a liquid crystal composition, and has the following functions: a member (electrode (for example, ITO)), a substrate (for example, a glass substrate, a substrate, etc.) that directly contacts a liquid crystal layer containing the liquid crystal composition. Acrylic substrate, transparent substrate, flexible substrate, etc.), resin layer (eg, color filter, alignment film, protective layer, etc.), insulating film (eg, inorganic material film, SiNx, etc.) interact to induce liquid crystal in the liquid crystal layer The molecules are aligned vertically or homogeneously. Particularly preferred is a compound capable of orienting the liquid crystal composition vertically or substantially perpendicularly to the substrate.

The self-aligning compound preferably has a polymerizable group for performing polymerization, a liquid crystal original group similar to the liquid crystal molecule, an adsorption group capable of interacting with a member directly in contact with the liquid crystal layer, and flexibility to induce alignment of the liquid crystal molecules. Base (flexible group).

The self-aligning compound is preferably a compound represented by the following general formula (SAL).

(In the above formula, P ^al represents a group represented by general formula (P-1) to general formula (P-IX),

(In the formula, R ^p11 and R ^p12 each independently represent a hydrogen atom, an alkyl group having 1 to 5 carbon atoms or a halogenated alkyl group having 1 to 5 carbon atoms, and W ^p11 represents a single bond, -O-, -COO- Or methylene, t ^p11 represents 0, 1 or 2)
Sp ^al represents a single bond or a linear or branched alkylene group having 1 to 20 carbon atoms. One of the alkylene groups or two or more non-adjacent -CH ₂ -may also be independently independent of each other. By -CH = CH-, -C≡C-, -O-, -CO-, -COO-, or -OCO-,
T represents an adsorption group,
MG stands for liquid crystal primitive group,
Cg represents a hydrogen atom, the above-mentioned adsorbing group, the above-Sp ^al- P ^al or a linear or branched chain alkylene group having 1 to 20 carbon atoms, one of the alkylene groups or two non-adjacent ones The above -CH ₂ -may be independently replaced by -CH = CH-, -C≡C-, -O-, -CO-, -COO-, or -OCO-, each of Cg, MG, and T Both can be substituted with the above-mentioned polymerizable groups-Sp ^al- P ^al- ,
n ^sal1 , n ^sal2 and n ^sal3 each independently represent a natural number of 1 to 5)
Radically polymerizable group of the present invention represented by the line P ^al, directly or via a spacer group as required with other structural bonding. The polymerizable group is preferably represented by P ^al- Sp ^al- .

P ^{al is} preferably a group selected from the group represented by the following general formulae (P-1) to (P-IX).

(In the formula, R ^p11 and R ^p12 each independently represent a hydrogen atom, an alkyl group having 1 to 5 carbon atoms or a halogenated alkyl group having 1 to 5 carbon atoms, and W ^p11 represents a single bond, -O-, -COO- Or methylene, t ^p11 represents 0, 1 or 2)
The P ^{a1 is} preferably a group selected from the group represented by the following general formulae (P-1) to (P-IX), and more preferably the general formula (P-1).

In the self-aligning compound of the present invention, P ^al- Sp ^al -may also be bonded to a mesogen, an adsorption group and / or a flexible group.

Moreover, in the self-aligning compound of the present invention, the polymerizable group is preferably bonded directly or via a spacer to the mesogen, the adsorption group or the flexible group, and more preferably directly or via the spacer to the mesogen. Or adsorption group bonding.

The spacer (Sp ^al ) is preferably an alkylene group having 1 to 20 carbon atoms representing a single bond or a linear or branched chain, and more preferably 1 to 20 carbon atoms representing a single bond or a linear chain. The 20 alkylene groups are more preferably a single bond or linear alkylene group having 2 to 10 carbon atoms. In the above-mentioned spacer (Sp ^al ), one of the alkylene groups or two or more non-adjacent -CH ₂ -may also be independently -CH = CH-, -C≡C-,- O-, -CO-, -COO-, or -OCO-.

In the self-aligning compound of the present invention, the number of polymerizable groups (P ^al- Sp ^al- ) is preferably 1 or more and 5 or less, more preferably 1 or more and 4 or less, and even more preferably 2 or more and 4 or less. , More preferably 2 or 3, and even more preferably 2.

The hydrogen atom in P ^al- Sp ^al -may be substituted by a polymerizable group, an adsorbing group, and / or a flexible group.

The original liquid crystal base of the present invention refers to a base having a rigid portion. For example, if it has more than one ring base, it preferably has 2 to 4 ring bases, and more preferably has 3 to 4 ring bases. Cyclic radicals can also be linked. The mesogen is preferably a skeleton similar to the liquid crystal compound used in the liquid crystal layer.

In addition, the "cyclic group" in this specification refers to the atomic group formed by bonding atoms, including carbocyclic, heterocyclic, saturated or unsaturated cyclic structures, monocyclic, bicyclic structures, polycyclic Ring structure, aromatic, non-aromatic, etc. The cyclic group may contain at least one hetero atom, and may be substituted with at least one substituent (halogen atom, reactive functional group, organic group (alkyl, aryl, etc.)). In the case where the cyclic group is a single ring, the mesogenic group preferably contains two or more single rings.

The above-mentioned liquid crystal priming group is preferably represented by the general formula (AL), for example.

(In the formula, Z ^AL represents a single bond, -CH = CH-, -CF = CF-, -C≡C-, -COO-, -OCO-, -OCOO-, -CF ₂ O-, -OCF _2- , -CH = CHCOO-, -OCOCH = CH-, -CH ₂ -CH ₂ COO-, -OCOCH ₂ -CH _2- , -CH = C (CH ₃ ) COO-, -OCOC (CH ₃ ) = CH- , -CH ₂ -CH (CH ₃ ) COO-, -OCOCH (CH ₃ ) -CH _2- , -OCH ₂ CH ₂ O-, or an alkylene group having 1 to 20 carbon atoms, one of the alkylene groups Or two or more non-adjacent -CH ₂ -may also be replaced by -O-, -COO-, or -OCO-,
A ^AL represents a divalent ring base,
One or two or more hydrogen atoms in Z ^AL and A ^AL may also be independently substituted with a halogen atom, an adsorption group, P ^a1 -Sp ^a1 -or a monovalent organic group,
When there are multiple cases of Z ^AL and A ^AL , they may be the same or different from each other, m ^AL represents an integer of 1 to 5, and the left-hand * and the right-hand * in the above formula represent a bonding bond)
In the general formula (AL), Z ^{AL is} preferably a single bond or an alkylene group having 2 to 20 carbon atoms, and more preferably a single bond or an alkylene group having 2 to 10 carbon atoms. One of the above-mentioned alkylene groups or two or more non-adjacent -CH ₂ -may be substituted with -O-, -COO-, or -OCO-. In addition, when the linearity of the rod-shaped molecule is desired, a single bond in which the ring is directly connected to the ring or a form in which the number of atoms directly connecting the ring and the ring is even is preferred. For example, in the case of -CH ₂ -CH ₂ COO-, the number of atoms directly linking the ring to the ring is four.

In the general formula (AL), the cyclic group is preferably selected from the group consisting of 1,4-phenylene, 1,4-cyclohexyl, 1,4-cyclohexenyl, and tetrahydropiperan-2,5-. Diyl, 1,3-dioxane-2,5-diyl, tetrahydrothiopyran-2,5-diyl, thiophene-2,5-diyl, 1,4-bicyclic (2, 2,2) octyl, decalin-2,6-diyl, pyridine-2,5-diyl, pyrimidine-2,5-diyl, pyridine -2,5-diyl, thiophene-2,5-diyl, 1,2,3,4-tetrahydronaphthalene-2,6-diyl, 2,6-naphthyl, phenanthrene-2,7- Diyl, 9,10-dihydrophenanthrene-2,7-diyl, 1,2,3,4,4a, 9,10a-octahydrophenanthrene-2,7-diyl, 1,4-naphthyl Benzo [1,2-b: 4,5-b '] dithiophene-2,6-diyl, benzo [1,2-b: 4,5-b'] diselephene-2,6 -Diyl, [1] benzothieno [3,2-b] thiophene-2,7-diyl, [1] benzoselenopheno [3,2-b] selenophene One structure in the group consisting of -2,7-diyl and 茀 -2,7-diyl, these structures may be unsubstituted or substituted, more preferably 1,4-phenylene, 1,4 -Cyclohexyl, 2,6-naphthyl or phenanthrene-2,7-diyl, preferably 1,4-phenylene or 1,4-cyclohexyl. In addition, one or two or more hydrogen atoms in the cyclic group may be substituted by a halogen atom, an adsorbing group, P ^a1- Sp ^a1- or a monovalent organic group.

In the general formula (AL), the so-called monovalent organic group is a group that forms a chemical structure when an organic compound becomes a monovalent group, and refers to an atomic group obtained by removing one hydrogen atom from an organic compound. : An alkyl group having 1 to 15 carbon atoms, an alkenyl group having 2 to 15 carbon atoms, an alkoxy group having 1 to 14 carbon atoms, an alkenyl group having 2 to 15 carbon atoms, etc., preferably a carbon atom number An alkyl group of 1 to 15 or an alkoxy group of 1 to 14 carbon atoms. Furthermore, one of the alkyl group, alkenyl group, alkoxy group, and alkenyl group or two or more -CH ₂ -which are not adjacent to each other may be substituted with -O-, -COO-, or -OCO-. Moreover, the said monovalent organic group may have a function as a flexible group mentioned later.

In the general formula (AL), m ^{AL is} preferably an integer of 2 to 4.

Among the above-mentioned liquid crystal primary groups, a particularly preferable form is represented by the following general formula (AL-1) or (AL-2), and more preferably, the formula (AL-1).

(In the above formula, X ^al1 to X ^al18 each independently represent a hydrogen atom, a halogen atom, P ^a1 -Sp ^a1- , an adsorbing group or a flexible group, and each of the ring A and the ring B independently represents a cyclohexane ring or a benzene ring.
Any one or more of X ^al1 to X ^al18 are substituted with the above-mentioned adsorption group,
Any one or more of X ^al1 to X ^al18 are substituted with the above-mentioned flexible group,
The above-mentioned adsorption group and the above-mentioned flexible group may be substituted with the above-mentioned P ^a1 -Sp ^a1- ,
In the general formula (AL-1) or the general formula (AL-2), each of the above-mentioned P ^a1 -Sp ^a1- ) is present.
In the above formula (AL-1), it is preferred that at least one or two or more of X ^a11 or X ^a18 to X ^a112 be substituted with an adsorption group, and it is more preferable that at least one or two of X ^a11 or X ^a110 The above is replaced with an adsorbing group. In addition, in this case, the adsorption group may be substituted with P ^a1 -Sp ^a1- . Especially when the ring A is a cyclohexane ring, it is preferable that X ^a110 is substituted with an adsorbing group.

In the above formula (AL-1), at least one or two or more of X ^a16 to X ^{a114 are} preferably substituted with a polymerizable group, and more preferably, any one of X ^al9 or X ^a111 is substituted with P ^a1 -Sp ^a1- .

In the above formula (AL-1), at least one or more of X ^a11 to X ^a13 , X ^a6 to X ^a114 , and X ^a117 to X ^a118 are preferably substituted with a flexible group, and X ^a11 to At least one or more of X ^a13 , X ^a6 to X ^a19 , X ^a111 to X ^a114 or X ^a117 to X ^a118 are substituted with a flexible group. More preferably, X ^a11 is substituted with a flexible group, and any one of X ^a6 to X ^a19 or X ^a111 to X ^a114 is substituted with a flexible group. In this case, it is even more preferable that the flexible group in X ^a11 of the former has more carbon atoms than the flexible group of the latter. The flexible group can also be replaced with P ^a1 -Sp ^a1- .

In the above formula (AL-2), at least one or two or more of X ^a11 or X ^a16 to X ^a110 are preferably substituted with an adsorbing group, and more preferably X ^a11 or X ^a18 is substituted with an adsorbing group. In this case, the adsorption group may be substituted with P ^a1 -Sp ^a1- . Especially when the ring A is a cyclohexane ring, it is preferable that X ^a18 is substituted with an adsorbing group.

In the above formula (AL-2), it is preferred that any one or two or more of X ^al6 to X ^a110 be substituted with P ^a1 -Sp ^a1- , and it is more preferable that any of X ^al7 or X ^a19 is substituted. It becomes P ^a1- Sp ^a1- .

In the above formula (AL-2), at least one or more of X ^a16 to X ^{a110 are} preferably substituted with P ^a1 -Sp ^a1- , and more preferably any one of X ^a17 or X ^a14 is substituted. It becomes P ^a1- Sp ^a1- .

In the above formula (AL-2), it is preferred that at least one or two or more of X ^a11 to X ^a17 or X ^a9 to X ^a114 are substituted with a flexible group, and it is preferably X ^a11 , X ^a4 to X ^a17 or At least one or two or more of X ^a19 to X ^a112 are substituted with a flexible group. More preferably, X ^a11 is substituted with a flexible group, and any one of X ^al4 to X ^a17 or X ^a19 to X ^a112 is substituted with a flexible group. In this case, it is even more preferable that the flexible group in X ^a11 of the former has more carbon atoms than the flexible group of the latter. The flexible group can also be replaced with P ^a1 -Sp ^a1- .

As a preferable aspect of the said liquid crystal original group, the following formulas (AL-1-1)-(AL-2-3) are mentioned. The general formula (AL) is a structure in which two hydrogen atoms are separated from other structures.

One or two or more hydrogen atoms of the cyclohexyl ring, benzene ring, pyran ring or dioxane ring in the general formulae (AL-1-1) to (AL-2-3) may be halogenated. ^A1 , P ^a1- Sp ^a1- , a monovalent organic group (for example, an alkyl group having 1 to 15 carbon atoms, an alkoxy group having 1 to 14 carbon atoms), an adsorbing group, or a bending group is substituted.

The preferred form of the above-mentioned liquid crystal base is general formula (AL-1-1), general formula (AL-1-4), general formula (AL-1-7), general formula (AL-2-1) or The structure represented by the general formula (AL-2-3) is a structure represented by the general formula (AL-1-4), the general formula (AL-1-7), or the general formula (AL-2-3). The structure represented by the general formula (AL-1-4) or the general formula (AL-1-7).

The adsorption group of the present invention is a group having a function of adsorbing to an adsorption medium such as a substrate, a membrane, and an electrode. Adsorption is generally divided into chemical adsorption that forms a chemical bond (covalent bond, ionic bond or metal bond) and is adsorbed between the adsorption medium and the adsorbate, or physical adsorption other than the chemical adsorption. The adsorption in this specification may be chemical adsorption or Any of the physical adsorption is preferably adsorbed to the adsorption medium by physical adsorption. Therefore, the adsorption group of the present invention is preferably a group capable of physically adsorbing with the adsorption medium, and the adsorption group is more preferably combined with the adsorption medium by an intermolecular force. As a form of binding with the adsorption medium by the intermolecular force, it can be combined with the adsorption medium through the interaction of a permanent dipole, a permanent quadrupole, a dispersion force, a charge moving force, or a hydrogen bond. As a preferable form of the adsorption group of the present invention, a form capable of binding to the adsorption medium by hydrogen bonding can be mentioned. In this case, the adsorption group of the present invention may be a donor or an acceptor of hydrogen-bonded protons, or both.

The adsorption group of the present invention is preferably a group containing a polar element having an atomic group in which a carbon atom and a heteroatom are connected. The polar element referred to in this specification refers to an atomic group in which a carbon atom and a heteroatom are directly connected. As the above hetero atom, at least one member selected from the group consisting of N, O, S, P, B, and Si is preferable, and at least one member selected from the group consisting of N, O, and S is more preferable. It is preferably at least one selected from the group consisting of N and O, and more preferably O.

In the self-aligning compound of the present invention, the valences of the polar elements of the present invention are monovalent, divalent, trivalent, and the like, and are not particularly limited, and the number of polar elements in the adsorption group is not particularly limited. limit.

In the self-aligning compound of the present invention, the above-mentioned adsorption group preferably has 1 to 8 molecules, more preferably has 1 to 4 molecules, and even more preferably has 1 to 3 molecules in one molecule.

The adsorption group of the present invention does not include P ^a1 -Sp ^a1 -and a flexible group.

The adsorption group of the present invention contains one or more polar elements, and the adsorption group can be roughly divided into a ring type and a chain type. The cyclic base is a form that includes a cyclic base in its structure. The cyclic base has a cyclic structure containing polar elements, and the chain base type does not include a cyclic base in its structure (including polar elements). Ring structure). The chain group is a form having a polar element in a linear or branched chain base, and may have a cyclic structure that does not contain a polar element in this part.

The adsorption group of the present invention is a form containing a cyclic group, and means a form containing at least one polar element in a cyclic atomic arrangement. The cyclic group in this specification is as described above. Therefore, when the adsorbing group of the present invention is in a form containing a cyclic group, it is only necessary to include a cyclic group having a polar element, and the adsorbing group may be branched or linear as a whole.

The so-called adsorption group of the present invention is in the form of a chain group, which means the following form: there is no cyclic atom arrangement containing polar elements in the molecule, and at least one is contained in the linear atom arrangement (also branched). Polar elements. The term "chain group" in this specification refers to an atomic group having no cyclic atom arrangement in the structural formula and the formed atoms are bonded in a linear (or branched) manner, and it refers to an acyclic group. In other words, it is the following concept: refers to a linear or branched aliphatic group, which may contain either a saturated bond or an unsaturated bond, such as an alkyl group, an alkenyl group, an alkoxy group, an ester group, Ether group, keto group, etc., may be substituted with at least one substituent (reactive functional group (vinyl, acryl group, methacryl group, etc.), chain organic group (alkane Group, cyano, etc.)). The chain group of the present invention may be either linear or branched.

The adsorption group of the present invention preferably has a chain group or a cyclic group. When attention is paid to the adsorption ability, a chain group is preferred. From the viewpoint of stability to the liquid crystal composition, a cyclic group is preferred. .

When the adsorption group of the present invention is a cyclic group, a heteroaromatic group having 3 to 20 carbon atoms (including a condensed ring) or a heteroaliphatic group having 3 to 20 carbon atoms (including a condensed ring) is more preferable. ), More preferably a heteroaromatic group having 3 to 12 carbon atoms (including a condensed ring) or a heteroaliphatic group having 3 to 12 carbon atoms (including a condensed ring), and even more preferably 5 members. A ring heteroaromatic group, a 5-membered ring heteroaliphatic group, a 6-membered ring heteroaromatic group, or a 6-membered ring heteroaliphatic group. The hydrogen atoms in these ring structures can also be replaced with halogen atoms and carbon atoms. 1 to 5 linear or branched alkyl or alkyloxy groups.

When the adsorption group of the present invention is a chain group, it is preferably a hydrogen atom in a linear or branched alkyl group having 1 to 20 carbon atoms or -CH ₂ -is substituted with a polar element, One of the alkyl groups or two or more non-adjacent -CH ₂ -may also be substituted by -CH = CH-, -C≡C-, -O-, -CO-, -COO-, or -OCO- . When the adsorption group of the present invention is a chain group, it is preferable that the polar component contains a polar element or contains two or more polar elements.

The hydrogen atom of the adsorption group of the present invention may be substituted with a polymerizable group.

The type of the polar element of the present invention is specifically preferably a polar element containing an oxygen atom (hereinafter, referred to as an oxygen-containing polar element), a polar element containing a nitrogen atom (hereinafter, referred to as a nitrogen-containing polar element), Polar elements containing phosphorus atoms (hereinafter, referred to as phosphorus-containing polar elements), Polar elements containing boron atoms (hereinafter, referred to as boron-containing polar elements), Polar elements containing silicon atoms (hereinafter, referred to as silicon-containing polar elements) Or a partial structure represented by a sulfur element-containing polar element (hereinafter referred to as a sulfur-containing polar element), from the viewpoint of the adsorption capacity, a nitrogen-containing polar element or an oxygen-containing polar element is more preferred, and an oxygen-containing polar element is even more preferred.

The above-mentioned oxygen-containing polar element is preferably selected from the group consisting of a hydroxyl group (-OH), an alkylol group (-R ^t -OH; R ^t is an alkylene group), and an alkoxy group (-OR; among them, R Is an alkyl group), a methyl group (-CHO), a carboxyl group (-COOH), and an ether group (-R ^t OR ^t '-; where R ^t and R ^t' are an alkylene group or an alkenylene group) ), Carbonyl group (-R ^t -C (= O) -R ^{t '} -; wherein R ^t and R ^t' are alkylene or alkylene), carbonate group (-O-C (= O)- O—) and an ester group (—COOR ^{t ′} −; wherein R ^{t ′} is an alkylene or an alkenyl group) or at least one group or a group in which the group is linked to a carbon atom.

The nitrogen-containing polar element is preferably selected from the group consisting of a cyano group (-CN), a primary amine group (-NH ₂ ), a secondary amine group (-NH-), and a tertiary amine group (-NRR '; among them, R and R ′ are at least one group selected from the group consisting of an alkyl group), a pyridyl group, a carbamoyl group (—CONH ₂ ), and a ureido group (—NHCONH ₂ ) or a group in which the group is linked to a carbon atom.

Examples of the phosphorus-containing polar elements, preferably selected from the group consisting of a phosphine _{(phosphinyl) (- CX 2 -P} (= O) H 2) and a phosphoric acid group _{(-CX 2 -OP (= O)} (OH) 2) consisting of At least one group in the group or a group in which the group is linked to a carbon atom.

The boron-containing polar element is preferably a group in which a boric acid group (—B (OH) ₂ ) is bonded to a carbon atom.

As the silicon-containing polar element, a -Si (OH) ₃ group or a -Si (OR) (OR ') (OR'') group (where R, R', and R "are alkyl groups) is preferably connected to Carbon atom base.

The sulfur-containing polar element is preferably selected from the group consisting of a mercapto group (-SH), a sulfur group (-S-), an oxythio group (-S (= O)-), a sulfonyl group (-SO _2- ), and a sulfone group. At least one group in the group consisting of sulfonamide group (-SO ₂ NH ₂ ), sulfonate group (-SO ₃ H) and sulfinyl group (-S (= O) OH) or carbon The atom is bonded to the base.

Therefore, the adsorption group of the present invention is preferably selected from the group consisting of a cyclic group having an oxygen-containing polar element (hereinafter referred to as an oxygen-containing cyclic group) and a cyclic group having a nitrogen atom polar element. (Hereinafter referred to as a nitrogen-containing cyclic group), a cyclic group having a phosphorus-containing polar element (hereinafter, referred to as a phosphorus-containing cyclic radical), and a cyclic radical having a boron-containing polar element (Hereinafter, referred to as a boron-containing cyclic group), a cyclic group including a silicon-containing polar element (hereinafter, referred to as a silicon-containing cyclic radical), and a cyclic group including a sulfur-containing polar element (Hereinafter, referred to as a sulfur-containing cyclic group), a chain-based group having an oxygen-containing polar element (hereinafter, an oxygen-containing chain-based radical), and a chain-based group having a nitrogen atom-polar element (Hereinafter, referred to as a nitrogen-containing chain radical), a chain-based radical having a phosphorus-containing polar element (hereinafter, a phosphorus-containing chain radical), and a chain-based radical having a boron-containing polar element (Hereinafter, referred to as a boron-containing chain group), and a chain-based group having a silicon-containing polar element (hereinafter, referred to as a silicon-containing chain) Base) and chain radicals One or two or more basic radicals in a group consisting of polar groups containing sulfur-containing polar elements (hereinafter referred to as sulfur-containing chain radicals) or containing such radicals, from the viewpoint of adsorption capacity It is more preferable to contain one or more groups selected from the group consisting of an oxygen-containing cyclic group, a sulfur-containing cyclic group, an oxygen-containing chain group, and a nitrogen-containing chain group.

As the adsorption group of the present invention, a group represented by the following general formula (T) is preferred.

(In the above general formula (T), X ^t1 represents a linear or branched alkyl group having 1 to 18 carbon atoms or -NH ₂ , and a hydrogen atom in the alkyl group may be substituted with a cyano group, P ^a1 -Sp ^a1- , or -CH ₂ -of the above-mentioned alkyl group, may also be substituted with -O-, -COO-, -C (= O)-, -OCO-, -CH = CH-,
The aforementioned R ^t1 represents a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, or a linear or branched alkylene group having 1 to 8 carbon atoms which may also be bonded to Z ^t1 or may also be bonded to Z ^{t1 is} a straight or branched alkylene group having 2 to 8 carbon atoms, and the above-mentioned Z ^t2 represents a single bond, a straight or branched chain alkylene group having 1 to 18 carbon atoms Or a linear or branched alkenyl group having 2 to 18 carbon atoms, the -CH ₂ -group of the alkenyl group or the alkenyl group may be substituted with -O- , -COO-, -C (= O)-, -OCO-,
Z ^t1 represents a single bond, a linear or branched alkylene group having 1 to 18 carbon atoms or a linear or branched alkylene group having 2 to 18 carbon atoms, and the alkylene group -CH ₂ -can also be replaced by -O-, -COO-, -C (= O)-, -OCO-, and when X ^t1 is -Z ^t2 -O-R ^At group, and when R ^at is alkylene or alkenyl group, the hydrogen atom of Z ^t1 may be substituted and bonded to R ^t1 ,
W ^t0 represents a linear or branched alkylene group having 1 to 18 carbon atoms, and -CH ₂ -of the alkylene group may be substituted with -O-, -CH in a manner in which oxygen atoms are not directly adjacent. = CH-, -COO-, -C (= O)-, -OCO-, and the hydrogen atom of the above-mentioned alkylene group may be substituted into the general formula (T),
W ^t1 represents a single bond or a linear or branched alkylene group, and -CH ₂ -of the alkylene group may also be substituted with -O-, -COO-, -C ( = O)-, -OCO-,
n ^t1 represents an integer from 0 to 4
The hydrogen atom in the molecule can also be replaced with the aforementioned polymerizable group P ^a1- Sp ^a1- , * indicates a bonding bond, and is bonded to a mesogen, a polymerizable group, a flexible group, or a spacer group)
In the general formula (T), X ^t1 preferably represents a linear or branched alkyl group having 1 to 17 carbon atoms, an -NH ₂ or -Z ^t2- O-R ^t1 group, and the alkyl group The hydrogen atom in it may be substituted with cyano group and P ^a1- Sp ^a1- . The above R ^t1 represents a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, or a carbon atom having 1 to 5 bonds with Z ^t1 . 8 linear or branched alkylene groups or 2 or 8 carbon or 2 linear alkylene groups which can also be bonded to Z ^t1 , where Z ^t2 represents a single bond, A linear or branched alkylene group having 1 to 18 carbon atoms or a linear or branched alkylene group having 2 to 18 carbon atoms, the alkylene group or the alkylene group -CH ₂ -may be substituted with -O-, -COO-, -C (= O)-, -OCO- in a manner that oxygen atoms are not directly adjacent.

In the general formula (T), as a form in which the adsorbing group (general formula (T)) may be substituted by the adsorbing group (general formula (T)), the general formula (T) may be the following general formula (t) The base of representation.

(In the above general formula (t), X ^t1 , Z ^t1 , W ^t1 and n ^t1 are the same as those in the above general formula (T),
W ^t2 represents a single bond or a divalent to tetravalent organic group,
m ^t1 represents an integer from 1 to 3, and a hydrogen atom in the molecule may be substituted with the aforementioned polymerizable group P ^a1 -Sp ^a1- . * indicates a bonding bond, and the liquid crystal original group, polymerizable group, flexible group or spacer Base bond)
"-W ^t2- Any" in the above-mentioned general formula (t) means that W ^t2 represents a single bond to a polyvalent group, and the bonding bond is monovalent to polyvalent (Any).

In the above-mentioned general formula (t), a 2- to 4-valent organic group refers to a group constituting a chemical structure when an organic compound becomes a 2- to 4-valent group, and 2 to 4 hydrogens are removed from the organic compound. A group of atoms made of atoms.

In the general formula (t), -W ^t2 -Any, which is a divalent to tetravalent organic group, is preferably a chain organic group, and examples thereof include linear or branched carbon atoms of 1 to 10 alkylene groups (-CH ₂ -of the alkylene groups may also be replaced with -O-, -COO-, -C (= O)-, -OCO-) in a manner that the oxygen atoms are not directly adjacent, and Chain- or branched-chain polyalkylene group having 1 to 10 carbon atoms (the -CH ₂ -group of the alkylene group may also be substituted with -O-, -COO in a way that the oxygen atoms are not directly adjacent -, -C (= O)-, -OCO-), -PH-, -POH-, -NH-, nitrogen atom or phosphorus atom, etc. The alkylene polyvalent group refers to a trivalent or tetravalent group produced by further removing 1 to 2 hydrogen atoms from the alkylene group, and refers to a so-called hydrocarbon chain having a 3 to 4 valent group having a free atomic valence.

The group represented by the above general formula (t) is a preferred form of W ^t0 in the general formula (T), that is, the adsorption group (the general formula (T)) may be replaced by the adsorption group (the general formula (T)) This aspect of the form is a preferred form of the base represented by the general formula (t), for example, when W ^t2 is a trivalent organic group, that is, m ^{t1 ′} is 2, W ^t2 is a nitrogen atom or In the case of an alkylene polyvalent group, for example, the following general formula (t-a) or (t-b) can be mentioned.

(In the above formulae (t-a) and (t-b), R ^{tc is} a hydrogen atom, a linear or branched carbon atom having 1 to 10 alkyl groups or polymerizable groups P ^{a1 to} Sp ^a1 -Indicates,
Z ^t1 and Z ^{t1 ′} each independently represent the same meaning as Z ^t1 in the general formula (T),
X ^t1 and X ^{t1 ′} each independently represent the same meaning as Z ^t1 in the general formula (T),
W ^t1 has the same meaning as W ^t1 in the general formula (T),
n ^t1 and n ^{t1 ′} each independently represent the same meaning as n ^t1 in the general formula (T),
The hydrogen atom in the molecule can also be replaced with the aforementioned polymerizable group P ^a1- Sp ^a1- , * indicates a bonding bond, and is bonded to a mesogen, a polymerizable group, a flexible group, or a spacer group)
In the general formula (t), for example, when -W ^t2 -Any is a tetravalent organic group, that is, when m ^{t1 '} is 3, and -W ^t2 -Any is an alkylene polyvalent group, for example, The following general formula (t-c) is given.

(In the above formula (t-c), Z ^t1 , Z ^{t1 ′} and Z ^{t1 ″} each independently represent the same meaning as Z ^t1 in the general formula (T),
X ^t1 , X ^{t1 ′} and X ^{t1 ″} each independently represent the same meaning as X ^t1 in the general formula (T),
W ^t1 has the same meaning as W ^t1 in the general formula (T),
n ^t1 , n ^{t1 ′} and n ^{t1 ″} each independently represent the same meaning as n ^t1 in the general formula (T),
The hydrogen atom in the molecule can also be replaced with the aforementioned polymerizable group P ^a1- Sp ^a1- , * indicates a bonding bond, and is bonded to a mesogen, a polymerizable group, a flexible group, or a spacer group)
In the general formula (t), m ^{t1 ′ is} preferably 1 or 2, and m ^{t1 ′ is more} preferably 1. Among the forms represented by the general formula (t-a), the general formula (t-b), and the general formula (t-c), a form represented by the general formula (t-a) is preferable.

In the above general formula (t), -W ^t2 -Any is preferably a single bond or a divalent to trivalent organic group, and more preferably a single bond, a straight chain or a branched chain having 1 to 8 carbon atoms. Alkylene (the -CH ₂ -of the alkylene can also be substituted with -O- in a way that the oxygen atoms are not directly adjacent), a straight-chain or branched chain alkyl group having 1 to 8 carbon atoms ( alkanetriyl) (-CH ₂ -of the alkanetriyl group may also be substituted with -O- in a manner where the oxygen atoms are not directly adjacent) or straight-chain or branched-chain alkyl-subunit (the alkyl-subunit of —CH ₂ — may also be replaced by —O— in a manner in which the oxygen atoms are not directly adjacent. For example, the following are mentioned.

(In the above formula, R ^tc represents an alkyl group or a polymerizable group (P ^a1- Sp ^a1- ) having 1 to 8 carbon atoms, n ^t0 represents an integer of 1 to 7, and * represents a bonding bond). The hydrogen atom of W ^t2 is substituted with a polymerizable group (P ^a1- Sp ^a1- ).

In the general formula (t), m ^t1 preferably represents 1 or 2.

In the above-mentioned general formula (T) or general formula (t), W ^t1 preferably represents a single bond or a linear or branched carbon numbered alkylene group having 1 to 8 carbon atoms (indicating a single bond or linear type). Or a branched alkylene group, the -CH ₂ -of the alkylene group may be substituted with -O-, -COO-, -C (= O)-, -OCO-) in such a manner that the oxygen atoms are not directly adjacent. , More preferably a single bond or a linear or branched chain alkylene having 1 to 7 carbon atoms (representing a single bond or a linear or branched chain alkylene, which is -CH ₂ -It can also be replaced with -O- in a way that the oxygen atoms are not directly adjacent). In addition, W ^t1 may be substituted and bonded to a hydrogen atom of a mesogen, a polymerizable group, or a flexible group.

The general formula (T) or the general formula (t) includes a form in which X ^{t1 is} not bonded to Z ^t1 (chain group) and a form in which X ^t1 and Z ^{t1 are} bonded to form a ring (cyclic group).

In the former case, a linear or branched alkyl group having 1 to 8 carbon atoms, a carbon substituted with -NH ₂ , -Z ^t2 -O-R ^t1 group, or cyano group is preferred. A linear or branched alkyl group having 1 to 7 atoms, more preferably a linear or branched alkyl group having 1 to 7 carbon atoms, via a -Z ^t2 -O-R ^t1 group A linear or branched alkyl group having 1 to 7 carbon atoms substituted with a cyano group. In the case of the former form, the R ^t1 each independently represents a hydrogen atom and an alkyl group having 1 to 5 carbon atoms, and the Z ^{t2 is} preferably a single bond and a straight chain having 1 to 10 carbon atoms. Or branched chain alkylene or linear or branched chain alkylene having 2 to 10 carbon atoms (the alkylene group or -CH ₂ -of the alkylene group may have an oxygen atom that is not direct The way of adjacency is replaced by -O-, -COO-, -C (= O)-, -OCO-).

In the latter case, it is preferred that n ^t1 is 1 or more, X ^t1 is -Z ^t2 -O-R ^t1 , and R ^t1 is a linear or branched alkylene having 1 to 7 carbon atoms. Group or a linear or branched alkenyl group having 2 to 7 carbon atoms, which is substituted with a hydrogen atom of Z ^t1 and bonded to R ^t1 . For example, it is preferably represented by the following general formula (T ′).

(In the general formula (T ′), R ^{t1 ′} each independently represents a linear or branched alkylene group having 1 to 8 carbon atoms or a linear or branched chain group having 2 to 8 carbon atoms. Alkenyl,
Z ^{t2 ′} each independently represents a single bond, a linear or branched alkylene group having 1 to 10 carbon atoms or a linear or branched alkylene group having 2 to 10 carbon atoms, and The -CH ₂ -group of the alkyl group or the alkenyl group may also be substituted with -O-, -COO-, -C (= O)-, -OCO-,
Z ^{t1 ′} represents a linear or branched alkylene trivalent group having 1 to 18 carbon atoms or a linear or branched alkylene trivalent group of 1 to 18 carbon atoms, The -CH ₂ -of the alkylene trivalent group or the alkylene trivalent group may be substituted with -O-, -COO-, -C (= O)-, or OCO-
W ^t2 represents a single bond or a divalent to tetravalent organic group,
-W ^t1 -represents a single bond or a linear or branched alkylene group, and -CH _{2 of the} alkylene group may also be replaced with -O-, -COO-,- C (= O)-, -OCO-,
n ^{t1 '} represents an integer from 1 to 4
m ^{t1 ′} represents an integer of 1 or more and 3 or less, and a hydrogen atom in the molecule may be substituted with the aforementioned polymerizable group P ^a1 -Sp ^a1- . Or spacer bond)
The alkylene trivalent group refers to a trivalent group produced by further removing one hydrogen atom from an alkylene group. The alkenyl trivalent group refers to a trivalent group generated by further removing one hydrogen atom from the alkenyl group, and includes a so-called trivalent group having a free atomic valence in a hydrocarbon chain, such as an alkanetriyl group or an alkyl group. -Subunits and so on.

In the above general formula (T), when X ^t1 is in a form (chain group) not bonded to Z ^t1 , Z ^t1 represents a single bond, a linear or branched chain having 1 to 12 carbon atoms -Shaped alkylene or linear or branched alkylene having 2 to 12 carbon atoms, -CH ₂ -of the alkylene may be substituted with -O-, -COO-, -C (= O)-, -OCO-.

In the above general formula (T), when X ^t1 is in a form (cyclic group) bonded to Z ^t1 , the general formula (T ′) is as described above.

In the above general formula (T), n ^t1 represents preferably an integer of 0 or more and 3 or less of, n ^t1 represents more preferably an integer of 0 or more and 2 or less of.

The general formula (T) is preferably selected from the group consisting of a cyclic group represented by the general formulae (T-1-1) to (T-44-1) and the general formulae (T-5-1) to (T-6-1). At least one of the groups consisting of chain bases represented by). When the cyclic group is selected as the adsorption group represented by the general formula (T) of the present invention, the general formula (T-1-1) or the general formula is preferred from the viewpoint of the adsorption capacity and compatibility with the liquid crystal composition. (T-2-1). When a chain group is selected as the adsorption group represented by the general formula (T) of the present invention, the general formula (T-5-1) or the viewpoint of the adsorption capacity and the stability to the liquid crystal composition is preferred. General formula (T-6-1).

(In the formula, X ^{t a} and X ^{t b} each independently represent -O-, -S-, or -CH _2- ,
R ^t5 represents a linear or branched alkyl group having 1 to 8 carbon atoms, a cyanoalkyl group or a linear or branched alkoxy group having 1 to 8 carbon atoms, etc. At least two or more of -CH ₂ -in the alkyl group may be substituted with -CH = CH-, -C≡C-, -O-, or -NH- in a manner that the oxygen atoms are not directly adjacent.
Z ^t3 represents a single bond, a linear or branched alkylene group having 1 to 18 carbon atoms, or a linear or branched alkylene group having 2 to 18 carbon atoms, and the alkylene group Or -CH ₂ -of the alkenyl group may be substituted with -O-, -COO-, -C (= O)-, -OCO-
W ^t2 represents a single bond or a monovalent to tetravalent organic group,
W ^t1 represents a single bond or a linear or branched alkylene,
n ^t1 represents an integer from 0 to 4
m ^t1 represents an integer of 1 or more and 3 or less, and a hydrogen atom in the molecule may be substituted with the aforementioned polymerizable group P ^a1- Sp ^a1- , * indicates a bonding bond, and is bonded to a liquid crystal original group, a polymerizable group, a flexible group, or Spacer bond
In the general formulae (T-1-1) to (T-4-1), any one of X ^ta or X ^tb is preferably -O-, and more preferably X ^ta and X ^tb are -O- .

Specific examples of the general formulae (T-1-1) to (T-4-1) include the following groups.

(In the above formula, R ^{tc is} a hydrogen atom, an alkyl group having 1 to 7 carbon atoms, or a polymerizable group P ^a1 -Sp ^a1- , and a hydrogen atom in the molecule may be substituted with the polymerizable group P ^a1 -Sp ^a1- , * indicates a bonding bond, and is bonded to a mesogen, a polymerizable group, a flexible group or a spacer group)
The general formula (T-5-1) preferably represents the general formula (T-5-2).

(In the above general formula (T-5-2), W ^t1 has the same meaning as W ^t1 in the above general formula (T-5), and R ^t51 and R ^t52 each independently represent one of 1 to 8 carbon atoms. Linear or branched alkyl or cyanoalkyl, at least two or more of these alkyl groups -CH ₂ -may also be -CH = CH-, -C in such a way that the oxygen atoms are not directly adjacent. ≡C-, -O- or -NH- substituted, R ^{tc is} represented by a hydrogen atom, an alkyl group having 1 to 7 carbon atoms or a polymerizable group P ^a1 -Sp ^a1- , each of n ^t1 , n ^t2 and n ^t3 Independently represents 0 or 1, hydrogen atoms in the molecule can also be replaced by P ^a1- Sp ^a1- )
Specific examples of the general formula (T-5-1) include the following groups.

(In the above formula, R ^{tc is} represented by a hydrogen atom, an alkyl group having 1 to 7 carbon atoms, or a polymerizable group P ^a1 -Sp ^a1- , and a hydrogen atom in the molecule may be substituted with the polymerizable group P ^a1- Sp ^a1- , * indicates a bonding bond, and is bonded to a mesogen, a polymerizable group, a flexible group, or a spacer group)

(In the above formula, R ^{tc is} represented by a hydrogen atom, an alkyl group having 1 to 7 carbon atoms, or a polymerizable group P ^a1 -Sp ^a1- , and a hydrogen atom in the molecule may be substituted with the polymerizable group P ^a1- Sp ^a1- ) (* indicates a bonding bond, which is bonded to a mesogen, a polymerizable group, a flexible group, or a spacer group)
Specific examples of the general formula (T-6-1) include the following examples.

(In the above formula, R ^{tc is} represented by a hydrogen atom, an alkyl group having 1 to 7 carbon atoms, or a polymerizable group P ^a1 -Sp ^a1- , and a hydrogen atom in the molecule may be substituted with the polymerizable group P ^a1- Sp ^a1- , * indicates a bonding bond, and is bonded to a mesogen, a polymerizable group, a flexible group, or a spacer group)
In the self-aligning compound of the present invention, a form in which the polar element contained in the adsorbing group or the polar element contained in the polymerizable group is localized is preferable. The adsorption group is an important structure for vertically aligning the liquid crystal composition. By adjoining the adsorption group and the polymerizable group, better alignment can be obtained, and the solubility to the liquid crystal composition can be displayed. Specifically, a form having a polymerizable group and an adsorbing group on the same ring of the mesogen is preferable. In this case, "a form in which one or more polymerizable groups and one or more adsorption groups are each bonded to the same ring" and "at least one or more adsorption groups of one or more polymerizable groups" are included. Among at least one of them, one is bonded to the other and has a polymerizable group and an adsorbing group on the same ring. " In this case, the hydrogen atom of the spacer of the polymerizable group may be substituted by an adsorbing group, and the hydrogen atom of the molecule containing the adsorbing group may be substituted by the spacer of the polymerizable group.

Moreover, in the self-aligning compound of the present invention, one or more hydrogen atoms of the polymerizable group may be substituted with an adsorbing group. As a preferred form in this case, a form in which a polymer group P ^a1 or optionally one or more hydrogen atoms connected to the polymer group SP ^a1 is replaced with an adsorbing group, and a more preferable form may be One or more hydrogen atoms in the polymerizable group (P ^a1- Sp ^a1- ) are substituted with the form of the adsorbing group represented by the general formula (T).

For example, as a suitable form in which an adsorption group and a polymerizable group are connected, the following formula (T-1-1.1), (T-6-1.1), or (T-5-1.1) can be mentioned.

(In the above formula, R ^t11a , R ^t16a and R ^t151a each independently represent a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, and R ^t151b and R ^t151c each independently represent an alkyl group or carbon having 1 to 3 carbon atoms. Cyanoalkyl with 1 to 3 atoms,
X ^a and X ^b represent -O-, -S-, or -CH _2- ,
L ^t151a and L ^t151b each independently represent a methylene group, an ethylene group, a propylene group, a vinylidene group, a vinylidene group, an isopropenyl group, or an ethylene group,
n ^t11c , n ^t151c , n ^t16c , n ^t151d , n ^t151e , n ^t151f and n ^t151g each independently represent 0 or 1, n ^t11a , n ^t11b , n ^t16a , n ^t16b , n ^t151a and n ^t151b each independently represent 1 An integer of ～ 11, * indicates the bonding to the original group of the liquid crystal)
In the above formula (T-1-1.1), it is preferable that either of X ^a or X ^b is -O-, and it is more preferable that X ^ta and X ^tb are -O-.

Preferably, in the above formula (T-5-1.1), L ^t151a and L ^t151b are each independently methylene, ethylene, vinylidene, vinylidene, isopropenyl, or ethylene.

In the above-mentioned formulas (T-1-1.1), (T-6-1.1) and (T-5-1.1), n ^t11a , n ^t11b , n ^t16a , n ^t16b , n ^t151a and n ^{t151b are} preferably each independently It is an integer of 1-8, More preferably, it is an integer of 1-5.

The flexible group of the present invention has the function of inducing the alignment of liquid crystal molecules, and preferably represents a linear or branched alkylene group having 1 to 20 carbon atoms, and more preferably a linear or branched carbon group having 1 to 20 carbon atoms. The alkylene group is more preferably a linear alkylene group having 2 to 15 carbon atoms. In addition, one of the alkylene groups or two or more non-adjacent -CH ₂ -may also independently pass through -CH = CH-, -C≡C-, -O-, -CO-, -COO -Or-OCO-replaced.

From the viewpoint of the so-called amphiphilic property of the self-aligning compound with respect to the liquid crystal layer, the above-mentioned flexible group is preferably bonded to the mesogenic group.

In the self-aligning compound of the present invention, the above-mentioned flexible group preferably has 1 to 6, more preferably 1 to 4, and even more preferably 1 to 3.

Among the self-aligning compounds described above, polar portions such as an adsorbing group or a polymerizable group that are not easily fused to the liquid crystal layer and non-polar portions such as a liquid crystal primor group or a flexible group that are easily fused to the liquid crystal layer are preferably present unevenly in the molecule. It is preferable to exhibit amphiphilicity to a so-called liquid crystal layer. Therefore, the self-aligning compound of the present invention preferably has a structure having a flexible group for aligning liquid crystal molecules at one end portion of the mesogen and a polymerizable group and an adsorbing group at the other end of the mesogen. It is considered that since the free energy of the interface becomes high near the interface between the liquid crystal layer and the substrate, a substance having a non-polar portion having affinity for the liquid crystal layer and a polar portion having low affinity for the liquid crystal layer in one molecule will be arranged at the interface. Up, thus reducing the interface free energy.

The lower limit of the content of the self-aligning compound in the liquid crystal composition of the present invention is preferably 0.02% by mass, preferably 0.03% by mass, preferably 0.04% by mass, preferably 0.05% by mass, and preferably 0.06% by mass, It is preferably 0.07% by mass, preferably 0.08% by mass, preferably 0.09% by mass, preferably 0.1% by mass, preferably 0.12% by mass, preferably 0.15% by mass, and more preferably 0.17% by mass, more preferably It is preferably 0.2% by mass, more preferably 0.22% by mass, preferably 0.25% by mass, preferably 0.27% by mass, preferably 0.3% by mass, preferably 0.32% by mass, preferably 0.35% by mass, more preferably It is 0.37% by mass, preferably 0.4% by mass, preferably 0.42% by mass, preferably 0.45% by mass, preferably 0.5% by mass, and more preferably 0.55% by mass. The upper limit of the content of the polymerizable compound represented by the general formula (I) in the liquid crystal composition of the present invention is preferably 2.5% by mass, preferably 2.3% by mass, preferably 2.1% by mass, and more preferably 2% by mass. It is preferably 1.8% by mass, preferably 1.6% by mass, preferably 1.5% by mass, preferably 1% by mass, preferably 0.95% by mass, more preferably 0.9% by mass, more preferably 0.85% by mass, It is preferably 0.8% by mass, preferably 0.75% by mass, preferably 0.7% by mass, preferably 0.65% by mass, preferably 0.6% by mass, preferably 0.55% by mass, preferably 0.5% by mass, more preferably It is 0.45% by mass, and preferably 0.4% by mass.

A particularly suitable specific example of the self-aligning compound of the present invention is a compound represented by the following general formula (al-1-1).

(In the above general formula (al-1-1), R ^al3 represents a linear alkyl group having 1 to 12 carbon atoms. In this alkyl group, one or two or more adjacent -CH _2- Can also be replaced by -O- or -CH = CH-,
L ^al5 , L ^al6 , L ^al7, and L ^al8 each independently represent a hydrogen atom, an alkyl group having 1 to 12 carbon atoms, a halogen atom, or the aforementioned P ^a1 -Sp ^a1- . Among the alkyl groups, one or not Two or more adjacent -CH ₂ -may be replaced by -O- or -CH = CH-,
Ring A ^al3 represents 1,4-cyclohexyl or 1,4-phenylene,
R ^ala or R ^alb each independently represents a hydrogen atom or the aforementioned P ^a1 -Sp ^a1- , and at least one of R ^ala or R ^alb represents the aforementioned P ^a1 -Sp ^a1- ,
Z ^al3 represents a single bond, -CH ₂ -CH _2- , -CH ₂ -O-, or O-CH _2- ,
R ^al4 represents an adsorption group represented by the above general formula (T),
p ^a13 and p ^a14 each independently represent 0 or 1)
Preferably, in the general formula (al-1-1), one of L ^al7 and L ^al8 represents an alkyl group having 1 to 5 carbon atoms.

In the formula (al-1-1), R ^ala preferred, and represented by the above R ^alb P ^a1 -Sp ^a1 -.

In the general formula (al-1-1), R ^{al4 is} preferably the general formulae (T-1-1) to (T-7-1), or (T-1-1.1), (T-6 -1.1) or (T-5-1.1).

Preferred compounds include compounds represented by the following formulae (AL-1.1) to (AL-3.6).

In order to improve reliability, the composition of the present invention may further contain one or more compounds (Q) as additives. The compound (Q) preferably has the following structure.

(In the formula, R ^Q represents a hydroxyl group, a hydrogen atom, a linear alkyl group or a branched alkyl group having 1 to 22 carbon atoms, and one or two or more CH ₂ groups in the alkyl group may not directly adjoin an oxygen atom. The method is replaced by -O-, -CH = CH-, -CO-, -OCO-, -COO-, -C≡C-, -CF ₂ O-, -OCF _2- , and bonded to other structures in * )
R ^Q represents a straight-chain or branched-chain alkyl group having 1 to 22 carbon atoms, and one or two or more CH ₂ groups in the alkyl group may be -O-, -CH = CH-, -CO-, -OCO-, -COO-, -C≡C-, -CF ₂ O-, -OCF ₂ -substitution, preferably straight-chain alkyl groups or straight-chain carbons having 1 to 10 carbon atoms alkoxy group, a straight-chain alkyl group is a CH ₂ group of substituted -OCO- or -COO-, branched alkyl, branched alkoxy group, a CH ₂ group is substituted with -OCO- or -COO- the branched Alkyl group, more preferably a linear alkyl group having 1 to 20 carbon atoms, a linear alkyl group in which a CH ₂ group is replaced by -OCO- or -COO-, a branched alkyl group, a branched alkoxy group, and a CH _{The 2} group is a branched alkyl group substituted with -OCO- or -COO-. M ^Q represents trans-1,4-cyclohexyl, 1,4-phenylene or a single bond, preferably trans-1,4-cyclohexyl or 1,4-phenylene.

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

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 more It is preferably a straight-chain alkyl group, branched-chain alkyl group, straight-chain alkoxy group, or branched-chain alkoxy group having 1 to 8 carbon atoms, and L ^{Q is} preferably a straight-chain alkyl group or branched chain having 1 to 8 carbon atoms. Chain extension alkyl. Among the compounds represented by the general formula (Q-a) to the general formula (Q-d), the compounds represented by the general formula (Q-c) and the general formula (Q-d) are more preferable.

The composition of the present invention preferably contains one or two compounds represented by the general formula (Q), more preferably one to five compounds, and the content is preferably 0.001 to 1%, and more preferably 0.001 to 0.1%, particularly preferably 0.001 to 0.05%.

As the antioxidant or light stabilizer that can be used in the present invention, specifically, compounds represented by the following (Q-1) to (Q-44) are preferred.

(Where n is an integer from 0 to 20)

(Liquid crystal display element)
The liquid crystal composition of this embodiment is applied to a liquid crystal display element. Hereinafter, an example of the liquid crystal display element of this embodiment will be described with reference to FIGS. 1 and 2 as appropriate.

FIG. 1 is a diagram schematically showing the configuration of a liquid crystal display element. In FIG. 1, for convenience of explanation, the constituent elements are shown separately. As shown in FIG. 1, a liquid crystal display element 1 according to this embodiment includes a first substrate 2 and a second substrate 3 arranged in an opposing manner, and a liquid crystal layer 4 provided between the first substrate 2 and the second substrate 3. The liquid crystal layer 4 is composed of the liquid crystal composition of the present embodiment.

A pixel electrode layer 5 is formed on the first substrate 2 on a surface on the liquid crystal layer 4 side. A common electrode layer 6 is formed on the second substrate 3 on the liquid crystal layer 4 side. The first substrate 2 and the second substrate 3 may be held by a pair of polarizing plates 7 and 8. A color filter 9 may be further provided on the liquid crystal layer 4 side of the second substrate 3.

That is, the liquid crystal display element 1 of one embodiment has a first polarizing plate 7, a first substrate 2, a pixel electrode layer 5, a liquid crystal layer 4 containing a liquid crystal composition, a common electrode layer 6, a color filter 9, The configuration of the second substrate 3 and the second polarizing plate 8.

The first substrate 2 and the second substrate 3 are formed of a flexible material such as glass or plastic. At least one of the first substrate 2 and the second substrate 3 is formed of a transparent material, and the other may be formed of a transparent material, or may be formed of an opaque material such as metal or silicon. The first substrate 2 and the second substrate 3 are bonded to each other by a sealing material such as an epoxy-based thermosetting composition and a sealing material arranged in the peripheral region. In order to maintain the distance between the substrates, for example, glass particles may be disposed therebetween. , Granular spacers such as plastic particles, alumina particles, or spacer columns made of resin formed by photolithography.

The first polarizing plate 7 and the second polarizing plate 8 can be adjusted in such a manner that the polarizing axis of each polarizing plate is adjusted so that the viewing angle or the contrast becomes good. It is preferable to operate with their transmission axes in the normal blackening mode. The method has transmission axes orthogonal to each other. It is particularly preferable that any one of the first polarizing plate 7 and the second polarizing plate 8 is disposed so as to have a transmission axis parallel to the alignment direction of the liquid crystal molecules when no voltage is applied.

From the viewpoint of preventing light leakage, the color filter 9 preferably forms a black matrix, and preferably forms a black matrix (not shown) at a portion corresponding to the thin film transistor.

The black matrix can be set together with the color filter on the substrate opposite to the array substrate, and can be set together with the color filter on the array substrate side or separately. That is, the black matrix is set on the array substrate and the color filter is set. On another substrate. In addition, the black matrix may be provided separately from the color filter, and the transmittance may be reduced by overlapping the colors of the color filter.

FIG. 2 is an enlarged plan view of a portion of the pixel electrode layer 5 formed on the first substrate 2 in FIG. 1, that is, an area surrounded by an I line. As shown in FIG. 2, in the pixel electrode layer 5 including a thin film transistor formed on the surface of the first substrate 2, a plurality of gate bus bars 11 for supplying a scanning signal and a plurality of gate buses 11 for supplying a display signal. The data bus lines 12 cross each other and are arranged in a matrix. Moreover, in FIG. 2, only a pair of gate bus lines 11 and 11 and a pair of data bus lines 12 and 12 are shown.

A unit pixel of a liquid crystal display element is formed by an area surrounded by a plurality of gate bus lines 11 and a plurality of data bus lines 12, and a pixel electrode 13 is formed in the unit pixel. The pixel electrode 13 has a so-called fish-bone structure including two trunk portions that are orthogonal to each other to form a cross shape, and a plurality of branch portions extending from each trunk portion. A Cs electrode 14 is provided between the pair of gate bus bars 11 and 11 approximately parallel to the gate bus bars 11. Further, a thin film transistor including a source electrode 15 and a drain electrode 16 is provided near an intersection where the gate bus line 11 and the data bus line 12 cross each other. A contact hole 17 is provided in the drain electrode 16.

The gate busbar 11 and the data busbar 12 are preferably formed of a metal film, respectively, and more preferably formed of Al, Cu, Au, Ag, Cr, Ta, Ti, Mo, W, Ni, or an alloy thereof. It is more preferably formed of Mo, Al, or an alloy thereof.

In order to improve the transmittance, the pixel electrode 13 is preferably a transparent electrode. The transparent electrode is formed by sputtering an oxide semiconductor (ZnO, InGaZnO, SiGe, GaAs, IZO (Indium Zinc Oxide), ITO (Indium Tin Oxide), SnO, TiO, AZTO (AlZnSnO), etc.). At this time, the film thickness of the transparent electrode may be 10 to 200 nm. In order to reduce the resistance, a transparent electrode may be formed in the form of a polycrystalline ITO film by firing an amorphous ITO film.

In the liquid crystal display element of this embodiment, for example, wiring can be formed on the first substrate 2 and the second substrate 3 by sputtering Al, a metal material such as an alloy thereof, and the pixel electrode layer 5 and the common electrode layer 6 can be formed, respectively. The color filter 9 can be produced by, for example, a pigment dispersion method, a printing method, an electrodeposition method, or a dyeing method. If a manufacturing method of a color filter using the pigment dispersion method is described as an example, a hardening coloring composition for a color filter is coated on the transparent substrate, a patterning process is performed, and then heating or light irradiation is performed to make Of hardening. By performing this step separately for three colors of red, green, and blue, a pixel portion for a color filter can be produced. The color filter 9 may be provided on a substrate side having a TFT or the like.

The first substrate 2 and the second substrate 3 face each other such that the pixel electrode layer 5 and the common electrode layer 6 each become an inner side. At this time, the interval between the first substrate 2 and the second substrate 3 can also be adjusted through a spacer. At this time, the thickness of the liquid crystal layer 4 is preferably adjusted to be, for example, 1 to 100 μm.

When the polarizing plates 7 and 8 are used, it is preferable to adjust the product of the refractive index anisotropy Δn of the liquid crystal layer 4 and the thickness of the liquid crystal layer 4 so that the contrast becomes maximum. When there are two polarizing plates 7 and 8, the polarizing axis of each polarizing plate can be adjusted to adjust the viewing angle or the contrast. Further, a retardation film for increasing the viewing angle may be used. Thereafter, a sealant such as an epoxy-based thermosetting composition is screen-printed on the substrate in a form provided with a liquid crystal injection port, and the substrates are bonded to each other and heated to heat-seal the sealant.

As a method of holding the composition between two substrates 2 and 3, a general vacuum injection method or an ODF (One Drop Fill) method can be used. Although the vacuum injection method does not generate drip marks, However, there is a problem of remaining injection traces. In this embodiment, it can be more suitably used for a display element manufactured by the ODF method. In the manufacturing process of the liquid crystal display element of the ODF method, on any substrate of the bottom plate or the front plate, a dispenser is used to draw an epoxy-based photothermal and hardening sealant in a closed-loop bank shape, and under deaeration, After dropping a specific amount of the composition, the front plate and the bottom plate are bonded, whereby a liquid crystal display element can be manufactured. In this embodiment, the ODF method can suppress the occurrence of drip marks when a liquid crystal composition is dropped on a substrate. In addition, the so-called drip mark is defined as a phenomenon in which a drop of a liquid crystal composition appears white when a black liquid crystal is displayed.

In addition, in the manufacturing steps of the liquid crystal display element using the ODF method, an optimal liquid crystal injection amount must be dropped according to the size of the liquid crystal display element. The liquid crystal composition of this embodiment is, for example, a dropping device generated when the liquid crystal is dropped. There is less pressure change or impact in the inside, and the liquid crystal can be continuously dripped continuously for a long time, so the yield of the liquid crystal display element can also be kept high. In particular, small liquid crystal display elements that are mostly used in recently popular smart phones have less optimal liquid crystal injection volume, so it is difficult to control the deviation from the optimal value within a certain range by using the liquid crystal composition of this embodiment. It can also realize a stable liquid crystal material discharge amount in small liquid crystal display elements.

In the case where the liquid crystal composition of this embodiment contains a polymerizable compound, as a method of polymerizing the polymerizable compound, in order to obtain good alignment performance of the liquid crystal, a moderate polymerization rate is preferred. Therefore, it is preferable to irradiate a single A method of polymerizing an active energy ray such as ultraviolet rays or an electron beam, or using them in combination or sequentially irradiating them. When using ultraviolet light, a polarized light source or a non-polarized light source can be used. When polymerization is performed while a composition containing a polymerizable compound is sandwiched between two substrates, at least the substrate on the irradiation surface side must be provided with appropriate transparency for active energy rays. In addition, it is also possible to use the following means: after using a mask to aggregate only a specific portion during light irradiation, change the orientation state of the unpolymerized portion by changing conditions such as an electric field, a magnetic field, or temperature, and further irradiate the active energy ray to make Of aggregation. In particular, when performing ultraviolet exposure, it is preferable to perform ultraviolet exposure while applying an AC electric field to a composition containing a polymerizable compound. The applied AC electric field is preferably an AC with a frequency of 10 Hz to 10 kHz, and more preferably a frequency of 60 Hz to 10 kHz. The voltage is selected depending on the desired pretilt angle of the liquid crystal display element. That is, the pretilt angle of the liquid crystal display element can be controlled by the applied voltage. In the liquid crystal display element of the transverse electric field type MVA mode, from the viewpoint of alignment stability and contrast, it is preferable to control the pretilt angle to 80 to 89.9 degrees.

The temperature during irradiation is preferably within a temperature range in which the liquid crystal state of the composition of this embodiment is maintained. The polymerization is preferably performed at a temperature close to room temperature, that is, typically at a temperature of 15 to 35 ° C. As a lamp generating ultraviolet rays, a metal halide lamp, a high-pressure mercury lamp, an ultra-high-pressure mercury lamp, or the like can be used. In addition, as the wavelength of the ultraviolet rays to be irradiated, it is preferable to irradiate ultraviolet rays in a wavelength region other than the absorption wavelength region of the composition, and it is preferable to use ultraviolet rays by intercepting them as necessary. The intensity of the irradiated ultraviolet rays is preferably 0.1 mW / cm ² to 100 W / cm ² , and more preferably 2 mW / cm ² to 50 W / cm ² . The energy of the irradiated ultraviolet rays can be adjusted as appropriate, preferably 10 mJ / cm ² to 500 J / cm ² , and more preferably 100 mJ / cm ² to 200 J / cm ² . The intensity can also be changed when irradiated with ultraviolet rays. The time for irradiating ultraviolet rays is appropriately selected according to the intensity of the ultraviolet rays irradiated, and is preferably 10 seconds to 3600 seconds, and more preferably 10 seconds to 600 seconds.

In the liquid crystal composition of this embodiment, since the compound (i) does not hinder the polymerization reaction of the polymerizable compound, the polymerizable compounds are appropriately polymerized with each other, and the unreacted polymerizable compound can be suppressed from remaining in the liquid crystal composition.

When the compound (ii) is used as the polymerizable compound, for example, the obtained liquid crystal display element 1 includes two substrates 2 and 3, a liquid crystal composition containing the two substrates 2 and 3, and a general formula ( ii) a liquid crystal layer 4 of a polymer of the compound represented. In this case, it is considered that the polymer of the compound represented by the general formula (ii) is partially present on the substrates 2 and 3 sides in the liquid crystal layer 4.

The liquid crystal display element 1 may be a liquid crystal display element for active matrix driving. The liquid crystal display element 1 may be a PSA type, PSVA type, VA type, IPS type, FFS type, or ECB type liquid crystal display element, and is preferably a PSA type liquid crystal display element.

In the liquid crystal display element of this embodiment, since a liquid crystal composition containing the compound (i) is used, it is not necessary to provide an alignment film such as a polyimide alignment film on the liquid crystal layer 4 side of the first substrate 2 and the second substrate 3. That is, the liquid crystal display element of this embodiment may be configured such that at least one of the two substrates does not have an alignment film such as a polyimide alignment film.
[Example]

The following examples further illustrate the present invention, but the present invention is not limited to these examples. In addition, "%" in the composition of the following examples and comparative examples means "mass%."
The description about the liquid crystal compound in an Example uses the following codes.
(Ring structure)

(Side chain structure and connection structure)

[Table 1]

The characteristics measured in the examples are as follows. In addition, the measurement is performed according to the method prescribed by JEITA ED-2521B unless otherwise specified.

T _ni : nematic phase-isotropic liquid phase transition temperature (° C)
Δn: refractive index anisotropy at 25 ° C Δε: dielectric anisotropy at 25 ° C
K11: elastic constant K11 (pN) at 25 ° C
K33: elastic constant K33 (pN) at 25 ° C
γ1: Rotary viscosity at 25 ° C (mPa ･ s)
Evaluation test of low-temperature storage property: The liquid crystal composition was filtered, and the dissolved air was removed under a vacuum decompression condition. Add it to the fully washed container and leave it at -20 ° C for 240 hours. Then, the presence or absence of precipitation was visually observed, and judged on the following two levels.

○: Precipitation could not be confirmed ×: Evaluation test for confirming the vertical alignment: Preparing a "first substrate (common electrode substrate with a transparent electrode layer and a color filter layer composed of a transparent common electrode but without an alignment film) ) "And" a second substrate (pixel electrode substrate) having a pixel electrode layer but no alignment film, the pixel electrode layer having a transparent pixel electrode driven by an active element ". A liquid crystal composition was dropped on the first substrate, and the second substrate was clamped to harden the sealing material to obtain a liquid crystal cell. The vertical alignment at this time was observed using a polarizing microscope, and evaluated in the following four levels.
◎: Uniform vertical alignment ○: Has only very few alignment defects, but is an allowable level △: Contains alignment defects and is an unacceptable level ×: Poor alignment is a very poor pretilt angle stability evaluation test: For the In the liquid crystal cell used in the evaluation test of vertical alignment), a rectangular AC wave of 10 V and 100 Hz was applied, and a high-pressure mercury lamp was used to irradiate UV light at an illuminance of 100 m / cm ² at 365 nm for 200 seconds. Thereafter, a rectangular AC wave of 10 V and 100 Hz was applied to one side, and a physical external force was applied to the cell. The stability of the white display was evaluated in the following four levels.

◎: Uniform alignment ○: Only very few alignment defects, but allowable levels △: Contains alignment defects, is an unacceptable level ×: Poor alignment, very bad drip marks: For the above (evaluation test of vertical alignment) The liquid crystal cell used in) was irradiated with UV light with an illumination intensity of 100 m / cm ² at 365 nm for 200 seconds while a rectangular AC wave of 10 V and 100 Hz was applied. Thereafter, the presence or absence of drip marks was evaluated in the following four levels in a state where no voltage was applied.

○: No drip marks were produced △: There were only very few drip marks, but it was an acceptable level ×: There were drip marks and it was very bad-: No drip marks could be evaluated, and no observation was possible (poor alignment)
(Examples 1 to 24 and Comparative Examples 1 to 6)
Liquid crystal compositions of LC-1 to LC-7 and LC-A shown in the following table were prepared, and their physical properties were measured. The physical properties are shown in Table 2.

[Table 2]

A liquid crystal composition containing a polymerizable compound was added to 100 parts by mass of each of the liquid crystal compositions described above, and the polymerizable compound was added in an amount added in the table. It was confirmed that all the polymerizable liquid crystal compositions of the present invention have excellent characteristics.

[table 3]

[Table 4]

[table 5]

[TABLE 6]

[TABLE 7]

1‧‧‧LCD display element

2‧‧‧ the first substrate

3‧‧‧second substrate

4‧‧‧ LCD layer

5‧‧‧ pixel electrode layer

6‧‧‧Common electrode layer

7‧‧‧first polarizer

8‧‧‧Second polarizing plate

9‧‧‧ color filter

11‧‧‧Gate bus

12‧‧‧Data Bus

13‧‧‧pixel electrode

14‧‧‧Cs electrode

15‧‧‧Source electrode

16‧‧‧ Drain electrode

17‧‧‧ contact hole

FIG. 1 is a view schematically showing an embodiment of a liquid crystal display element.

FIG. 2 is an enlarged plan view of the area surrounded by the I line in FIG. 1.

Claims (9)

A liquid crystal composition having a negative dielectric anisotropy (Δε) and containing one or more types selected from the group consisting of the general formulae (N-1), (N-2), and (N-3) Compounds among compounds, and one or more polymerizable compounds, ( ^Wherein R ^N11 , R ^N12 , R ^N21 , R ^N22 , R ^N31 and R ^N32 each independently represent an alkyl group having 1 to 8 carbon atoms, one of the alkyl groups or two or more adjacent ones -CH ₂ -may also be independently replaced by -CH = CH-, -C≡C-, -O-, -CO-, -COO-, or -OCO-, A ^N11 , A ^N12 , A ^N21 , A ^N22 , A ^N31 and A ^N32 each independently represent a group selected from the group consisting of (a), (b), (c), (d): (a) 1,4-cyclohexyl (existing in One of this group -CH ₂ -or two or more non-adjacent -CH ₂ -may be substituted with -O-) (b) 1,4-phenylene (one of this group- CH = or two or more non-adjacent -CH = may be substituted with -N =) (c) naphthalene-2,6-diyl, 1,2,3,4-tetrahydronaphthalene-2,6--2 Or decahydronaphthalene-2,6-diyl (existing in naphthalene-2,6-diyl or 1,2,3,4-tetrahydronaphthalene-2,6-diyl -CH = or Non-adjacent two or more -CH = may be substituted with -N =) and (d) 1,4-cyclohexenylene, the above-mentioned groups (a), (b), The groups (c) and (d) may be each independently substituted by a cyano group, a fluorine atom, or a chlorine atom, and Z ^N11 , Z ^N12 , Z ^N21 , Z ^N22 , Z ^N31, and Z ^N32 each independently represent a single bond,- CH ₂ CH ₂ -,-(CH ₂ ) _4- , --OCH _2- , --CH ₂ O-, --COO-, --OCO-, --OCF _2- , --CF ₂ O-, --CH = N--N = CH-, -CH = CH-, -CF = CF-, or -C≡C-, X ^N21 represents a hydrogen atom or a fluorine atom, T ^N31 represents -CH ₂ -or an oxygen atom, n ^N11 , n ^N12 , n ^N21 , N ^N22 , n ^N31 and n ^N32 each independently represent an integer of 0 to 3, n ^N11 + n ^N12 , n ^N21 + n ^N22 and n ^N31 + n ^N32 are each independently 1, 2 or 3, when A ^N11 to A ^N32 , When there are a plurality of Z ^N11 to Z ^N32 , they may be the same or different). The liquid crystal composition according to claim 1, wherein the total content of the following compounds contained in the liquid crystal composition is greater than those represented by the general formulae (N-1), (N-2), and (N-3) The total content of the compound is 50 to 95% by mass; the compound is at least one of Z ^N11 and Z ^N12 among the compounds represented by the general formulae (N-1), (N-2), and (N-3): As a linking group other than a single bond, at least one of Z ^N21 and Z ^N22 is a compound other than a single bond, and at least one of Z ^N31 and Z ^N32 is a compound other than a single bond. The polymerizable liquid crystal composition according to claim 1, wherein the liquid crystal composition contains a compound selected from compounds represented by the general formulae (N-1), (N-2), and (N-3) The total content of compounds in which Z ^N11 , Z ^N12 , Z ^N21 , Z ^N22 , Z ^N31, and Z ^N32 are single bonds is represented by the general formulae (N-1), (N-2), and (N-3) The total content of the compounds is 5 to 50% by mass. The liquid crystal composition according to any one of claims 1 to 3, which contains one or more compounds represented by the general formula (P) as a polymerizable compound, (In the above general formula (P), R ^p1 represents a hydrogen atom, a fluorine atom, a cyano group, a hydrogen atom, a hydrogen atom which may be substituted by a halogen atom, an alkyl group having 1 to 15 carbon atoms, and a hydrogen atom may also be a halogen atom. Substituted alkoxy groups having 1 to 15 carbon atoms, hydrogen atoms which may be substituted by halogen atoms, alkenyl groups having 1 to 15 carbon atoms, and hydrogen atoms which may be substituted by halogen atoms. Or -Sp ^p2 -P ^{p 2} , P ^p1 and P ^p2 each independently represent any one of the general formula (P ^p1 -1) to (P ^p1 -9), (In the formula, R ^p11 and R ^p12 each independently represent a hydrogen atom, an alkyl group having 1 to 5 carbon atoms or a halogenated alkyl group having 1 to 5 carbon atoms, and W ^p11 represents a single bond, -O-, -COO- Or methylene, t ^p11 represents 0, 1 or 2, when there are multiple R ^p11 , R ^p12 , W ^p11 and / or t ^p11 in the molecule, they may be the same or different) Sp ^p1 and Sp ^p2 each independently represents a single bond or a spacer, and Z ^p1 and Z ^p2 each independently represent a single bond, -O-, -S-, -CH _2- , -OCH _2- , -CH ₂ O-, -CO- , -C ₂ H _4- , -COO-, -OCO-, -OCOOCH _2- , -CH ₂ OCOO-, -OCH ₂ CH ₂ O-, -CO-NR ^ZP1- , -NR ^ZP1 -CO-,- SCH _2- , -CH ₂ S-, -CH = CR ^ZP1 -COO-, -CH = CR ^ZP1 -OCO-, -COO-CR ^ZP1 = CH-, -OCO-CR ^ZP1 = CH-, -COO-CR ^ZP1 = CH-COO-, -COO-CR ^ZP1 = CH-OCO-, -OCO-CR ^ZP1 = CH-COO-, -OCO-CR ^ZP1 = CH-OCO-,-(CH ₂ ) _z -COO-, _{- (CH 2) 2 -OCO -} , - OCO- (CH 2) 2 -, - (C = O) -O _{(CH 2) 2 -, -} CH = CH -, - CF = CF -, - CF = CH -, - CH = CF -, - CF 2 -, - CF 2 O -, - OCF 2 -, - CF 2 CH _2- , -CH ₂ CF _2- , -CF ₂ CF ₂ -or -C≡C-(where, R ^ZP1 each independently represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and exists in the molecule In the case of a plurality of R ^ZP1 , they may be the same or different) A ^p2 represents 1,4-phenylene, 1,4-cyclohexyl, anthracene-2,6-diyl, phenanthrene-2,7 -Diyl, pyridine-2,5-diyl, pyrimidine-2,5-diyl, naphthalene-2,6-diyl, indane-2,5-diyl, 1,2,3,4-tetrayl Hydronaphthalene-2,6-diyl or 1,3-dioxane-2,5-diyl, A ^{p2 is} unsubstituted or can be alkyl having 1 to 12 carbon atoms, 1 to 12 carbon atoms Halogenated alkyl, alkoxy having 1 to 12 carbon atoms, halogenated alkoxy having 1 to 12 carbon atoms, halogen atom, cyano, nitro or -Sp ^p2 -P ^p2 substitution, A ^p1 represents (A ^p1 -11) to (A ^p1 -19), (In the formula, it is bonded to Sp ^p1 or Z ^p1 in ★, and it is bonded to Z ^p1 in ★★. One or two or more hydrogen atoms in the structure can also be alkyl or carbon having 1 to 12 carbon atoms. Halogenated alkyl group having 1 to 12 atoms, alkoxy group having 1 to 12 carbon atoms, halogenated alkoxy group having 1 to 12 carbon atoms, halogen atom, cyano, nitro, or -Sp ^p2 -P ^p2 substitution ) A ^p3 represents the base represented by (A ^p3 -11) to (A ^p3 -19), (In the formula, it is bonded to Z ^p2 in ★ and R ^p1 or Z ^p2 in ★ ★. One or more hydrogen atoms in the structure can also be alkyl or carbon having 1 to 12 carbon atoms. Halogenated alkyl group having 1 to 12 atoms, alkoxy group having 1 to 12 carbon atoms, halogenated alkoxy group having 1 to 12 carbon atoms, halogen atom, cyano, nitro, or -Sp ^p2 -P ^p2 substitution ) M ^p2 and m ^p3 each independently represent 0, 1, 2 or 3, m ^p1 and m ^p4 each independently represent 1, 2 or 3, and there are a plurality of P ^p1 , Sp ^p1 , A ^p1 , Z ^p1 in the molecule , Z ^p2 , A ^p3 and / or R ^p1 , they may be the same or different). The liquid crystal composition according to any one of claims 1 to 4, which contains one or more compounds represented by general formula (SAL) as a polymerizable compound, (In the above formula, P ^al represents a group represented by general formula (P-1) to general formula (P-IX), (In the formula, R ^p11 and R ^p12 each independently represent a hydrogen atom, an alkyl group having 1 to 5 carbon atoms or a halogenated alkyl group having 1 to 5 carbon atoms, and W ^p11 represents a single bond, -O-, -COO- Or methylene, t ^p11 represents 0, 1 or 2) Sp ^al represents a single bond or a linear or branched chain of 1 to 20 carbon alkylene groups, one of which is not adjacent Two or more of -CH ₂ -may also be independently replaced by -CH = CH-, -C≡C-, -O-, -CO-, -COO-, or -OCO-, T represents an adsorbing group, MG Represents a liquid crystalline radical, Cg represents a hydrogen atom, the above-mentioned adsorption group, the above-Sp ^al- P ^al or a linear or branched alkylene group having 1 to 20 carbon atoms, and one of the alkylene groups or Non-adjacent two or more -CH ₂ -may also be independently replaced by -CH = CH-, -C≡C-, -O-, -CO-, -COO-, or -OCO-, Cg, MG and Any one of T may be substituted with the above-mentioned polymerizable group-Sp ^al- P ^al- , and n ^sal1 , n ^sal2, and n ^sal3 each independently represent a natural number of 1 to 5). The liquid crystal composition according to claim 1, wherein the total content of the following compounds contained in the liquid crystal composition is relative to that of the compounds of the general formulae (N-1), (N-2), and (N-3) The total content is 50 to 95% by mass; at least one of Z ^N11 and Z ^{N12 in} the compound represented by the general formula (N-1) is a linking group other than a single bond, and at least one of Z ^N21 and Z ^N22 One is a linking group other than a single bond, and at least one of Z ^N31 and Z ^N32 is a compound of a linking group other than a single bond. A liquid crystal display element using the liquid crystal composition according to any one of claims 1 to 6. A liquid crystal display element for active matrix driving, which uses the liquid crystal composition according to any one of claims 1 to 6. The IPS-type, FFS-type, PSA-type or PSVA-type liquid crystal display element uses the liquid crystal composition according to any one of claims 1 to 6.