JP7215151B2 - Liquid crystal composition and liquid crystal display element using the same - Google Patents

Description

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

In general, liquid crystal display elements such as liquid crystal panels and liquid crystal displays change the state of arrangement of liquid crystal molecules by an external stimulus such as an electric field, and use the resulting change in optical characteristics for display. Such a liquid crystal display element has a structure in which a gap between two transparent substrates is filled with liquid crystal molecules. It is common to form an alignment film for aligning.

However, due to problems such as alignment defects caused by scratches and dust on the surface of the alignment film in the manufacturing process of the liquid crystal display element and the increase in the size of the substrate, uniform alignment over the entire surface of the substrate for a long period of time has become difficult. There is a problem that it becomes difficult to design and manage the alignment film for obtaining.

Therefore, in recent years, there has been a demand for the development of a liquid crystal display element that does not require an alignment film by using a liquid crystal composition containing an alignment aid for controlling the alignment of liquid crystal molecules in the liquid crystal layer.

For example, in Patent Document 1, instead of lauryl acrylate, which interacts relatively weakly with liquid crystal molecules, a monofunctional biphenyl monomer with an octyl group that exhibits high linearity and a diphenyl monomer with a stearyl group that exhibits low linearity are used. A liquid crystal composition containing an alignment aid for suppressing a decrease in voltage holding ratio is disclosed.

In addition, Patent Document 2 discloses various liquid crystal compositions containing a polymerizable alignment aid for controlling the alignment of liquid crystal molecules instead of an alignment film. When the liquid crystal composition containing the polymerizable compound is filled into a test cell without an alignment layer, it has a spontaneous homeotropic (vertical) alignment with respect to the substrate surface and this vertical alignment is stable all the way to the clearing point, It is stated that the formed VA cell can be reversibly switched by voltage application.

However, a composition containing two types of hydrophobic monomers having a long alkyl chain and a biphenyl skeleton as shown in Patent Document 1 above does not interact with the liquid crystal molecules of the liquid crystal layer filled between the pair of substrates. Although it is considered to be stronger than lauryl acrylate, there has been a problem that the orientation direction of liquid crystal molecules cannot be regulated due to its low adsorptive power to the substrate.

Further, in Patent Document 2, since a polymerizable alignment aid having a polar group such as a hydroxyl group is used, although the adsorption power to the substrate is higher than that of the monomer of Patent Document 1, the polymerizable alignment aid is used. There was a problem that the compatibility between the agent and the liquid crystal composition was not at a sufficient level, and precipitates were generated during long-term storage.

US Patent Publication No. 2017-0123275 Japanese Patent Publication No. 2015-168826

Accordingly, the problem to be solved by the present invention is to provide a liquid crystal composition containing a novel alignment aid excellent in vertical alignment and compatibility, and a liquid crystal display device using the same.

As a result of intensive studies by the present inventors, a liquid crystal composition containing one or more alignment aids and one or more liquid crystal compounds having a specific chemical structure and a liquid crystal display element using the same As a result, the inventors have found that the above problems can be solved, and have completed the present invention.

That is, the present invention provides a compound represented by the general formula (I)

(wherein R ¹ represents an alkenyl group having 2 to 8 carbon atoms, R ² represents an alkyl group having 1 to 8 carbon atoms, an alkenyl group having 2 to 8 carbon atoms, an alkoxy group having 1 to 8 carbon atoms, or an alkenyloxy group having 2 to 8 carbon atoms.) is one or two or more,
general formula (II-N)

(In the formula, each R ^N11 independently represents an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent -CH ₂ - in the alkyl group each independently represent -CH= optionally substituted by CH—, —C≡C—, —O—, —CO—, —COO— or —OCO—;
A ^N11 each independently represents (a) a 1,4-cyclohexylene group (one —CH ₂ — present in this group or two or more non-adjacent —CH ₂ — are replaced with —O—; may be used.),
(b) a 1,4-phenylene group (one -CH= or two or more non-adjacent -CH= present in this group may be replaced with -N=),
(c) naphthalene-2,6-diyl group, 1,2,3,4-tetrahydronaphthalene-2,6-diyl group or decahydronaphthalene-2,6-diyl group (naphthalene-2,6-diyl group or One —CH= or two or more non-adjacent —CH= present in the 1,2,3,4-tetrahydronaphthalene-2,6-diyl group may be replaced with —N=. ) and (d) represent a group selected from the group consisting of 1,4-cyclohexenylene groups, wherein the above groups (a), (b), (c) and (d) are each independently cyano optionally substituted with a group, a fluorine atom or a chlorine atom,
Z ^N11 and Z ^N12 are each independently a single bond, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, -OCF ₂ -, -CF ₂ O-, -CH=N-N=CH-, -CH=CH-, -CF=CF- or -C≡C-,
n ^N11 and n ^N12 each independently represent an integer of 0 to 3, n ^N11 +n ^N12 are each independently 1, 2 or 3, and there are a plurality of A ^N11 to A ^N12 and Z ^N11 to Z ^N12 If so, they may be the same or different. )
One or two or more compounds represented by, and
A liquid crystal composition containing an alignment aid is provided, and a liquid crystal display device using the liquid crystal composition is provided.

The liquid crystal composition of the present application is particularly useful as a liquid crystal display device for active matrix driving.

According to the present invention, it is possible to provide a liquid crystal composition containing a novel alignment aid excellent in vertical alignment and compatibility, and a liquid crystal display device using the same, and display defects caused by poor alignment of the liquid crystal composition can be provided. It is possible to provide a VA-, IPS-, FFS-, PSA-, or PSVA-type liquid crystal display device with no or suppressed ions.

It is a figure which shows typically one Embodiment of a liquid crystal display element. FIG. 2 is an enlarged plan view of a region surrounded by line I in FIG. 1;

Hereinafter, the method for manufacturing the liquid crystal display element of the present invention will be described in detail based on preferred embodiments.

First, the liquid crystal composition used in the present invention will be described.

(Liquid crystal composition)
The liquid crystal composition contains liquid crystal molecules and an alignment aid having a function of spontaneously aligning the liquid crystal molecules, preferably having a polar group.

As described above, the liquid crystal composition of the present invention has the general formula (I)

（式中、Ｒ^１は炭素原子数２～８のアルケニル基を表し、Ｒ^２は炭素原子数１～８のアルキル基、炭素原子数２～８のアルケニル基、炭素原子数１～８のアルコキシ基又は炭素原子数２～８のアルケニルオキシ基を表す。）
で表される化合物を１種又は２種以上含有するが、２から２５質量％含有することが好ましく、３から２０質量％であることが更に好ましく、４から１５質量％であることが特に好ましい。更に詳述すると、高Δｎを得るにはその含有量は１０から２５質量％が好ましいが、低温における析出の抑制を重視する場合にはその含有量は３から１５質量％が好ましい。

(wherein R ¹ represents an alkenyl group having 2 to 8 carbon atoms, R ² represents an alkyl group having 1 to 8 carbon atoms, an alkenyl group having 2 to 8 carbon atoms, an alkoxy group having 1 to 8 carbon atoms, group or an alkenyloxy group having 2 to 8 carbon atoms.)
Contains one or more compounds represented by, preferably 2 to 25% by mass, more preferably 3 to 20% by mass, particularly preferably 4 to 15% by mass . More specifically, the content is preferably 10 to 25% by mass to obtain a high Δn, but the content is preferably 3 to 15% by mass when emphasis is placed on suppressing precipitation at low temperatures.

R ¹¹ in general formula (I) represents an alkenyl group having 2 to 8 carbon atoms, more preferably an alkenyl group having 2 to 5 carbon atoms.

R ¹² in general formula (I) is an alkyl group having 1 to 8 carbon atoms, an alkenyl group having 2 to 8 carbon atoms, an alkoxy group having 1 to 8 carbon atoms or an alkenyloxy group having 2 to 8 carbon atoms. is more preferably an alkyl group having 2 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms.
Specifically, the compound of general formula (I) is represented by formula (I-A1), formula (I-A2), formula (I-A3), formula (I-A4), formula (I-A5), formula (I -B1), formula (I-B2), formula (I-B3), formula (I-B4), formula (I-B5) or formula (I-B6)

is preferable, and when emphasizing viscosity, it is preferably formula (I-A1), formula (I-A5), formula (I-B1) or formula (I-B6), and emphasizing the elastic constant In that case, formula (I-A4), formula (I-B4) or formula (I-B5) is particularly preferred. Further, when the vertical orientation is important, the formula (I-A5) or the formula (I-B6) is preferable, and the formula (I-B6) is more preferable.
The liquid crystal composition of the present invention preferably contains two or more compounds of general formula (I). It is more preferable to contain two or more kinds at the same time.

The liquid crystal composition of the present invention contains one or more compounds represented by the general formula (II-N), preferably 5 to 40% by mass, and 8 to 38% by mass. is more preferable, and 10 to 36% by mass is particularly preferable when the vertical orientation is important.

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

(In the formula, each R ^N11 independently represents an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent -CH ₂ - in the alkyl group each independently represent -CH= CH—, —C≡C—, —O—, —CO—, —COO—, —OCO—, 1,3-cyclopentylene group, 1,3-cyclobutylene group or 1,2-cyclopropylene group may be substituted,
A ^N11 each independently represents (a) a 1,4-cyclohexylene group (one —CH ₂ — present in this group or two or more non-adjacent —CH ₂ — are replaced with —O—; may be used.),
(b) a 1,4-phenylene group (one -CH= or two or more non-adjacent -CH= present in this group may be replaced with -N=),
(c) naphthalene-2,6-diyl group, 1,2,3,4-tetrahydronaphthalene-2,6-diyl group or decahydronaphthalene-2,6-diyl group (naphthalene-2,6-diyl group or One —CH= or two or more non-adjacent —CH= present in the 1,2,3,4-tetrahydronaphthalene-2,6-diyl group may be replaced with —N=. ) and (d) represent a group selected from the group consisting of 1,4-cyclohexenylene groups, wherein the above groups (a), (b), (c) and (d) are each independently cyano optionally substituted with a group, a fluorine atom or a chlorine atom,
Z ^N11 and Z ^N12 are each independently a single bond, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, -OCF ₂ -, -CF ₂ O-, -CH=N-N=CH-, -CH=CH-, -CF=CF- or -C≡C-,
n ^N11 and n ^N12 each independently represent an integer of 0 to 3, n ^N11 +n ^N12 are each independently 1, 2 or 3, and there are a plurality of A ^N11 to A ^N12 and Z ^N11 to Z ^N12 If so, they may be the same or different. )
The compound represented by the general formula (II-N) is preferably a compound in which Δε is negative and its absolute value is greater than 3.

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

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

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

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

More preferably, it represents trans-1,4-cyclohexylene group, 1,4-cyclohexenylene group or 1,4-phenylene group.

Z ^N11 and Z ^N12 preferably each independently represent -CH ₂ O-, -CF ₂ O-, -CH ₂ CH ₂ -, -CF ₂ CF ₂ - or a single bond, and -CH ₂ O- , —CH ₂ CH ₂ — or a single bond is more preferred, and —CH ₂ O— or a single bond is particularly preferred. ^nN11 + ^nN12 is preferably 1 or 2, a combination ^{where nN11} is 1 and ^nN12 is 0, a combination where ^nN11 is 2 and ^nN12 is ⁰ , One combination, ^nN11 =2 and ^nN12 =1, is preferred.

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

When the viscosity of the composition of the present invention is kept low and a composition having a high response speed is required, it is preferable that the above lower limit is low and the upper limit is low. Furthermore, when a composition of the present invention is required to have a high Tni and good temperature stability, it is preferable that the above lower limit value is low and the upper limit value is low. Further, 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 and the upper limit value are high.

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

(wherein R ^N11 and R ^N12 have the same meanings as R ^N11 and R ^N12 in general formula (II-N), n ^Na11 represents 0 or 1, n ^Nb11 represents 1 or 2, and n ^Nc11 represents represents 0 or 1, n ^Nd11 represents 1 or 2, n ^Ne11 represents 1 or 2, n ^Nf12 represents 1 or 2, n ^Ng11 represents 1 or 2, A ^Ne11 represents trans-1,4 - represents a cyclohexylene group or a 1,4-phenylene group, and A ^Ng11 represents a trans-1,4-cyclohexylene group, a 1,4-cyclohexenylene group or a 1,4-phenylene group, but at least one represents a 1,4-cyclohexenylene group, Z ^Ne11 represents a single bond or ethylene, but at least one present in the molecule represents ethylene, and a plurality of A ^Ne11 , Z ^Ne11 and/or A ^Ng11 may be the same or different.)
Among the compounds represented by general formulas (N-1a) to (N-1g), those represented by general formula (N-1b) are particularly preferable because the effects of the present invention are remarkable.

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

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

(In the formula, R ^N111 has the same meaning as R ^N11 and R ^N12 in general formula (II-N).)
R ^N111 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably a propyl group, a pentyl group or a vinyl group. R ¹¹² is preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and preferably an ethoxy group or a butoxy group.

The compounds represented by general formula (N-1-1) can be used alone, or two or more compounds can be used in combination. Although there is no particular limitation on the types of compounds that can be combined, they are appropriately used in combination according to the required properties such as low-temperature solubility, transition temperature, electrical reliability, and birefringence. The types of compounds to be used are, for example, one type, two types, three types, four types, and five or more types as one embodiment of the present invention.

When emphasizing the improvement of Δε, it is preferable to set the content higher, when emphasizing solubility at low temperatures, setting the content higher is more effective, and when emphasizing _TNI , the content A lower setting is more effective. Furthermore, in order to improve drip marks and seizure properties, it is preferable to set the range of the content in the middle.

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

Furthermore, the compound represented by general formula (N-1-1) is a compound selected from the group of compounds represented by formulas (N-1-1.1) to (N-1-1.25). is preferably a compound represented by formulas (N-1-1.1) to (N-1-1.4), and formula (N-1-1.1) and formula (N -1-1.3) is preferred.

The compounds represented by formulas (N-1-1.1) to (N-1-1.21) can be used alone or in combination, but the composition of the present invention The lower limits of the preferable content of these compounds alone or of these compounds with respect to the total amount are 5% by mass, 10% by mass, 13% by mass, 15% by mass, 17% by mass, and 20% by mass. %, 23% by mass, 25% by mass, 27% by mass, 30% by mass, 33% by mass, and 35% by mass. Preferred upper limits of the content are 50% by mass, 40% by mass, 38% by mass, 35% by mass, 33% by mass, 30% by mass, and 30% by mass, relative to the total amount of the composition of the present invention. % by mass, 28% by mass, 25% by mass, 23% by mass, 20% by mass, 18% by mass, 15% by mass, 13% by mass, 10% by mass , 8% by mass, 7% by mass, 6% by mass, 5% by mass, and 3% by mass.

The compound represented by general formula (N-1-2) is the following compound.

(In the formula, R ^N121 has the same meaning as R ^N11 in general formula (II-N).)
R ^N121 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably an ethyl group, a propyl group, a butyl group or a pentyl group.

The compounds represented by general formula (N-1-2) can be used alone, or two or more compounds can be used in combination. Although there is no particular limitation on the types of compounds that can be combined, they are appropriately used in combination according to the required properties such as low-temperature solubility, transition temperature, electrical reliability, and birefringence. The types of compounds to be used are, for example, one type, two types, three types, four types, and five or more types as one embodiment of the present invention.

When emphasizing the improvement of Δε, it is preferable to set the content higher, when emphasizing solubility at low temperatures, setting the content lower is more effective, and when emphasizing _TNI , the content A higher setting is more effective. Furthermore, in order to improve drip marks and seizure properties, it is preferable to set the range of the content in the middle.

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

Further, the compound represented by general formula (N-1-2) is a compound selected from the group of compounds represented by formulas (N-1-2.3) to (N-1-2.23). is preferably a compound represented by formula (N-1-2.3) to formula (N-1-2.6) and formula (N-1-2.20),
Compounds represented by formula (N-1-2.3) or formula (N-1-2.6) are preferred when emphasis is placed on improving Δε, and formula ( N-1-2.20) is preferred.

The compounds represented by formulas (N-1-2.3) to (N-1-2.23) can be used alone or in combination, but the composition of the present invention The lower limit of the preferred content of these compounds alone or with respect to the total amount of is 5% by mass, 10% by mass, 13% by mass, 15% by mass, 17% by mass, 20 % by mass, 23% by mass, 25% by mass, 27% by mass, 30% by mass, 33% by mass, and 35% by mass. Preferred upper limits of the content are 50% by mass, 40% by mass, 38% by mass, 35% by mass, 33% by mass, 30% by mass, and 30% by mass, relative to the total amount of the composition of the present invention. % by mass, 28% by mass, 25% by mass, 23% by mass, 20% by mass, 18% by mass, 15% by mass, 13% by mass, 10% by mass , 8% by mass, 7% by mass, 6% by mass, 5% by mass, and 3% by mass.

The compound represented by general formula (N-1-3) is the following compound.

(In the formula, each R ^N131 independently has the same meaning as R ^N11 in general formula (II-N).)
R ^N131 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably an ethyl group, a propyl group or a butyl group.

The compounds represented by general formula (N-1-3) can be used alone, or two or more compounds can be used in combination. Although there is no particular limitation on the types of compounds that can be combined, they are appropriately used in combination according to the required properties such as low-temperature solubility, transition temperature, electrical reliability, and birefringence. The types of compounds to be used are, for example, one type, two types, three types, four types, and five or more types as one embodiment of the present invention.

When emphasizing the improvement of Δε, it is preferable to set the content higher, when emphasizing solubility at low temperatures, setting the content higher is more effective, and when emphasizing _TNI , the content A higher setting is more effective. Furthermore, in order to improve drip marks and seizure properties, it is preferable to set the range of the content in the middle.

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

Furthermore, the compound represented by general formula (N-1-3) is a compound selected from the group of compounds represented by formulas (N-1-3.1) to (N-1-3.21). is preferably a compound represented by formulas (N-1-3.1) to (N-1-3.7) and formula (N-1-3.21), and formula (N -1-3.1) is preferred.

The compounds represented by formula (N-1-3.1) and formula (N-1-3.21) can be used alone or in combination, but the composition of the present invention The lower limit of the preferred content of these compounds alone or with respect to the total amount of is 5% by mass, 10% by mass, 13% by mass, 15% by mass, 17% by mass, 20 % by mass. The upper limit of the preferable content is 35% by mass, 30% by mass, 28% by mass, 25% by mass, 23% by mass, 20% by mass, relative to the total amount of the composition of the present invention. % by mass, 18% by mass, 15% by mass, and 13% by mass.

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

(In the formula, R ^N141 and R ^N142 each independently have the same meaning as R ^N11 in general formula (II-N).)
R ^N141 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 a methyl group, a propyl group, an ethoxy group or a butoxy group.

The compounds represented by general formula (N-1-4) can be used alone, or two or more compounds can be used in combination. Although there is no particular limitation on the types of compounds that can be combined, they are appropriately used in combination according to the required properties such as low-temperature solubility, transition temperature, electrical reliability, and birefringence. The types of compounds to be used are, for example, one type, two types, three types, four types, and five or more types as one embodiment of the present invention.

When emphasizing the improvement of Δε, it is preferable to set the content higher, when emphasizing solubility at low temperatures, setting the content higher is more effective, and when emphasizing _TNI , the content A lower setting is more effective. Furthermore, in order to improve drip marks and seizure properties, it is preferable to set the range of the content in the middle.

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

Furthermore, the compound represented by general formula (N-1-4) is a compound selected from the group of compounds represented by formulas (N-1-4.1) to (N-1-4.22). Preferably, it is preferably a compound represented by the formulas (N-1-4.1) to (N-1-4.4), the formula (N-1-4.1), and the formula ( A compound represented by N-1-4.4) is preferred.

The compounds represented by formulas (N-1-4.1) to (N-1-4.22) can be used alone or in combination, but the composition of the present invention The lower limits of the preferred content of these compounds alone or of these compounds with respect to the total amount are 3% by mass, 5% by mass, 7% by mass, 10% by mass, 13% by mass, and 15% by mass. %, 17% by mass, and 20% by mass. The upper limit of the preferable content is 35% by mass, 30% by mass, 28% by mass, 25% by mass, 23% by mass, 20% by mass, relative to the total amount of the composition of the present invention. % by mass, 18% by mass, 15% by mass, 13% by mass, 11% by mass, 10% by mass, and 8% by mass.

The compound represented by general formula (N-1-5) is the following compound.

(In the formula, R ^N151 has the same meaning as R ^N11 in general formula (II-N).)
R ^N151 is preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, preferably an ethyl group, a propyl group or a butyl group.

The compound represented by general formula (N-1-5) can be used alone, or two or more compounds can be used in combination. Although there is no particular limitation on the types of compounds that can be combined, they are appropriately used in combination according to the required properties such as low-temperature solubility, transition temperature, electrical reliability, and birefringence. The types of compounds to be used are, for example, one type, two types, three types, four types, and five or more types as one embodiment of the present invention.

When emphasizing the improvement of Δε, it is preferable to set the content higher, when emphasizing solubility at low temperatures, setting the content lower is more effective, and when emphasizing _TNI , the content A higher setting is more effective. Furthermore, in order to improve drip marks and seizure properties, it is preferable to set the range of the content in the middle.

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

Further, the compound represented by general formula (N-1-5) is a compound selected from the group of compounds represented by formulas (N-1-5.1) to (N-1-5.12). Preferably.

The compounds represented by formulas (N-1-5.1) to (N-1-5.12) can be used alone or in combination, but the composition of the present invention The lower limit of the preferred content of these compounds alone or with respect to the total amount of is 5% by mass, 8% by mass, 10% by mass, 13% by mass, 15% by mass, 17 % by mass and 20% by mass. Preferred upper limits of the content are 35% by mass, 33% by mass, 30% by mass, 28% by mass, 25% by mass, 23% by mass, and 23% by mass, relative to the total amount of the composition of the present invention. % by mass, 20% by mass, 18% by mass, 15% by mass, and 13% by mass.

The compound represented by general formula (N-1-10) is the following compound.

(In the formula, R ^N1101 and R ^N1102 each independently have the same meaning as R ^N11 in general formula (II-N).)
R ^N1101 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably an ethyl group, a propyl group, a butyl group, a vinyl group or a 1-propenyl group.

The compounds represented by general formula (N-1-10) can be used alone, or two or more compounds can be used in combination. Although there is no particular limitation on the types of compounds that can be combined, they are appropriately used in combination according to the required properties such as low-temperature solubility, transition temperature, electrical reliability, and birefringence. The types of compounds to be used are, for example, one type, two types, three types, four types, and five or more types as one embodiment of the present invention.

When emphasizing the improvement of Δε, it is preferable to set the content higher, when emphasizing solubility at low temperatures, setting the content higher is more effective, and when emphasizing _TNI , the content A lower setting is more effective. Furthermore, in order to improve drip marks and seizure properties, it is preferable to set the range of the content in the middle.

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

Furthermore, the compound represented by the general formula (N-1-10) is
It is preferably a compound selected from the group of compounds represented by formulas (N-1-10.1) to (N-1-10.13),
It is preferably a compound represented by formulas (N-1-10.1) to (N-1-10.4),
Compounds represented by formula (N-1-10.1) are preferred.

The compound represented by general formula (N-1-11) is the following compound.

(In the formula, each R ^N1111 independently has the same meaning as R ^N11 in general formula (II-N).)
R ^N1111 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably an ethyl group, a propyl group, a butyl group, a vinyl group or a 1-propenyl group.

The compounds represented by general formula (N-1-11) can be used alone, or two or more compounds can be used in combination. Although there is no particular limitation on the types of compounds that can be combined, they are appropriately used in combination according to the required properties such as low-temperature solubility, transition temperature, electrical reliability, and birefringence. The types of compounds to be used are, for example, one type, two types, three types, four types, and five or more types as one embodiment of the present invention.

When emphasizing the improvement of Δε, it is preferable to set the content higher, when emphasizing solubility at low temperatures, setting the content lower is more effective, and when emphasizing _TNI , the content A higher setting is more effective. Furthermore, in order to improve drip marks and seizure properties, it is preferable to set the range of the content in the middle.

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

Furthermore, the compound represented by general formula (N-1-11) is a compound selected from the group of compounds represented by formulas (N-1-11.1) to (N-1-11.13). is preferred, and a compound represented by formula (N-1-11.4) is particularly preferred.

The compound represented by general formula (N-1-12) is the following compound.

(In the formula, R ^N1121 has the same meaning as R ^N11 in general formula (II-N).)
R ^N1121 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably an ethyl group, a propyl group or a butyl group. R ¹¹²² is preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and preferably an ethoxy group, a propoxy group or a butoxy group.

The compound represented by general formula (N-1-12) can be used alone, or two or more compounds can be used in combination. Although there is no particular limitation on the types of compounds that can be combined, they are appropriately used in combination according to the required properties such as low-temperature solubility, transition temperature, electrical reliability, and birefringence. The types of compounds to be used are, for example, one type, two types, three types, four types, and five or more types as one embodiment of the present invention.

When emphasizing the improvement of Δε, it is preferable to set the content higher, when emphasizing solubility at low temperatures, setting the content higher is more effective, and when emphasizing _TNI , the content A lower setting is more effective. Furthermore, in order to improve drip marks and seizure properties, it is preferable to set the range of the content in the middle.

Preferred lower limits for the content of the compound represented by formula (N-1-12) with respect to the total amount of the composition of the present invention are 5% by mass, 10% by mass, and 13% by mass. , 15% by weight, 17% by weight, and 20% by weight. The upper limit of the preferable content is 35% by mass, 30% by mass, 28% by mass, 25% by mass, 23% by mass, 20% by mass, relative to the total amount of the composition of the present invention. % by mass, 18% by mass, 15% by mass, and 13% by mass.

The compound represented by general formula (N-1-13) is the following compound.

(In the formula, R ^N1131 has the same meaning as R ^N11 in general formula (II-N).)
R ^N1131 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably an ethyl group, a propyl group or a butyl group.

The compounds represented by general formula (N-1-13) can be used alone, or two or more compounds can be used in combination. Although there is no particular limitation on the types of compounds that can be combined, they are appropriately used in combination according to the required properties such as low-temperature solubility, transition temperature, electrical reliability, and birefringence. The types of compounds to be used are, for example, one type, two types, three types, four types, and five or more types as one embodiment of the present invention.

When emphasizing the improvement of Δε, it is preferable to set the content higher, when emphasizing solubility at low temperatures, setting the content higher is more effective, and when emphasizing _TNI , the content A higher setting is more effective. Furthermore, in order to improve drip marks and seizure properties, it is preferable to set the range of the content in the middle.

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

The compound represented by general formula (N-1-14) is the following compound.

(In the formula, each R ^N1141 independently has the same meaning as R ^N11 in general formula (II-N).)
R ^N1141 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably a methyl group, an ethyl group, a propyl group or a butyl group.

The compounds represented by general formula (N-1-14) can be used alone, or two or more compounds can be used in combination. Although there is no particular limitation on the types of compounds that can be combined, they are appropriately used in combination according to the required properties such as low-temperature solubility, transition temperature, electrical reliability, and birefringence. The types of compounds to be used are, for example, one type, two types, three types, four types, and five or more types as one embodiment of the present invention.

When emphasizing the improvement of Δε, it is preferable to set the content higher, when emphasizing solubility at low temperatures, setting the content higher is more effective, and when emphasizing _TNI , the content A higher setting is more effective. Furthermore, in order to improve drip marks and seizure properties, it is preferable to set the range of the content in the middle.

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

Furthermore, the compound represented by general formula (N-1-14) is a compound selected from the group of compounds represented by formulas (N-1-14.1) to (N-1-14.5). is preferably a compound represented by formulas (N-1-14.1) to (N-1-14.3), and formulas (N-1-14.2) and formulas (N -1-14.3) is preferred.

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

(In the formula, R ^N1201 each independently has the same meaning as R ^N11 and R ^N12 in general formula (II-N).)
R ^N1201 and R ^N1202 are each independently preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably an ethyl group, a propyl group or a butyl group.

The compounds represented by general formula (N-1-20) can be used alone, or two or more compounds can be used in combination. Although there is no particular limitation on the types of compounds that can be combined, they are appropriately used in combination according to the required properties such as low-temperature solubility, transition temperature, electrical reliability, and birefringence. The types of compounds to be used are, for example, one type, two types, three types, four types, and five or more types as one embodiment of the present invention.

When emphasizing the improvement of Δε, it is preferable to set the content higher, when emphasizing solubility at low temperatures, setting the content higher is more effective, and when emphasizing _TNI , the content A higher setting is more effective. Furthermore, in order to improve drip marks and seizure properties, it is preferable to set the range of the content in the middle.

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

The compound represented by general formula (N-1-21) is the following compound.

(In the formula, R ^N1211 each independently has the same meaning as R ^N11 and R ^N12 in general formula (II-N).)
R ^N1211 and R ^N1212 are each independently preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably an ethyl group, a propyl group or a butyl group.

The compounds represented by general formula (N-1-21) can be used alone, or two or more compounds can be used in combination. Although there is no particular limitation on the types of compounds that can be combined, they are appropriately used in combination according to the required properties such as low-temperature solubility, transition temperature, electrical reliability, and birefringence. The types of compounds to be used are, for example, one type, two types, three types, four types, and five or more types as one embodiment of the present invention.

When emphasizing the improvement of Δε, it is preferable to set the content higher, when emphasizing solubility at low temperatures, setting the content higher is more effective, and when emphasizing _TNI , the content A higher setting is more effective. Furthermore, in order to improve drip marks and seizure properties, it is preferable to set the range of the content in the middle.

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

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

(In the formula, each R ^N1221 independently has the same meaning as R ^N11 in general formula (II-N).)
Each R ¹²²¹ is independently preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably an ethyl group, a propyl group or a butyl group.

The compounds represented by general formula (N-1-22) can be used alone, or two or more compounds can be used in combination. Although there is no particular limitation on the types of compounds that can be combined, they are appropriately used in combination according to the required properties such as low-temperature solubility, transition temperature, electrical reliability, and birefringence. The types of compounds to be used are, for example, one type, two types, three types, four types, and five or more types as one embodiment of the present invention.

When emphasizing the improvement of Δε, it is preferable to set the content higher, when emphasizing solubility at low temperatures, setting the content higher is more effective, and when emphasizing _TNI , the content A higher setting is more effective. Furthermore, in order to improve drip marks and seizure properties, it is preferable to set the range of the content in the middle.

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

Furthermore, the compound represented by the general formula (N-1-22) is
It is preferably a compound selected from the group of compounds represented by formulas (N-1-22.2) to (N-1-22.12), represented by formula (N-1-22.2) It is preferably a compound that

Among these, the compound represented by the general formula (N-1-2) is particularly preferable because the effect of the present invention becomes remarkable.

In the present invention, the compound represented by the above general formula (II-N) is used as an essential component as a dielectrically negative compound (Δε has a negative sign and an absolute value greater than 2). dielectrically negative compounds may be used together.
Such other dielectrically negative compounds include compounds represented by the following general formula (II-N').

（式中、Ｒ^Ｎ１１、Ｒ^Ｎ１２、Ｒ^Ｎ２２、Ｒ^Ｎ３１及びＲ^Ｎ３２はそれぞれ前記一般式（ＩＩ－Ｎ）と同じものである。また、Ｒ^Ｎ２１は炭素原子数１～８のアルキル基を表し、該アルキル基中の１個又は非隣接の２個以上の－ＣＨ_２－はそれぞれ独立して－ＣＨ＝ＣＨ－、－Ｃ≡Ｃ－、－Ｏ－、－ＣＯ－、－ＣＯＯ－、－ＯＣＯ－、１，３－シクロペンチレン基、１，３－シクロブチレン基又は１，２－シクロプロピレン基によって置換されていてもよい。ただし、メトキシ基を除く。）
具体的には、一般式（ＩＩ－Ｎ’）で表される化合物は一般式（Ｎ－２－１）～（Ｎ－２－２１）で表される化合物群から選ばれる化合物であることが好ましい。
一般式（Ｎ－２－１）で表される化合物は下記の化合物である。

(In the formula, R ^N11 , R ^N12 , R ^N22 , R ^N31 and R ^N32 are each the same as in the general formula (II-N). R ^N21 represents an alkyl group having 1 to 8 carbon atoms. , one or two or more non-adjacent -CH ₂ - in the alkyl group are each independently -CH=CH-, -C≡C-, -O-, -CO-, -COO-, - OCO-, 1,3-cyclopentylene group, 1,3-cyclobutylene group or 1,2-cyclopropylene group, excluding methoxy group).
Specifically, the compound represented by the general formula (II-N') is a compound selected from the group of compounds represented by the general formulas (N-2-1) to (N-2-21). preferable.
The compound represented by general formula (N-2-1) is the following compound.

（式中、Ｒ^Ｎ１１１及びＲ^Ｎ１１２はそれぞれ独立して、一般式（ＩＩ－Ｎ’）におけるＲ^Ｎ１１及びＲ^Ｎ１２と同じ意味を表す。）
本発明の組成物の総量に対しての式（Ｎ－２－１）で表される化合物の好ましい含有量の下限値は、５質量％であり、１０質量％であり、１３質量％であり、１５質量％であり、１７質量％であり、２０質量％であり、２３質量％であり、２５質量％であり、２７質量％であり、３０質量％であり、３３質量％であり、３５質量％である。好ましい含有量の上限値は、本発明の組成物の総量に対して、５０質量％であり、４０質量％であり、３８質量％であり、３５質量％であり、３３質量％であり、３０質量％であり、２８質量％であり、２５質量％であり、２３質量％であり、２０質量％であり、１８質量％であり、１５質量％であり、１３質量％であり、１０質量％であり、８質量％であり、７質量％であり、６質量％であり、５質量％であり、３質量％である。

(In the formula, R ^N111 and R ^N112 each independently have the same meaning as R ^N11 and R ^N12 in general formula (II-N′).)
Preferred lower limits for the content of the compound represented by formula (N-2-1) with respect to the total amount of the composition of the present invention are 5% by mass, 10% by mass, and 13% by mass. , 15% by mass, 17% by mass, 20% by mass, 23% by mass, 25% by mass, 27% by mass, 30% by mass, 33% by mass, 35% by mass % by mass. Preferred upper limits of the content are 50% by mass, 40% by mass, 38% by mass, 35% by mass, 33% by mass, 30% by mass, and 30% by mass, relative to the total amount of the composition of the present invention. % by mass, 28% by mass, 25% by mass, 23% by mass, 20% by mass, 18% by mass, 15% by mass, 13% by mass, 10% by mass , 8% by mass, 7% by mass, 6% by mass, 5% by mass, and 3% by mass.

式（Ｎ－２－１．１）～（Ｎ－２－１．２５）で表される化合物は単独で使用することも、組み合わせて使用することも可能であるが、本発明の組成物の総量に対しての単独又はこれら化合物の好ましい含有量の下限値は、５質量％であり、１０質量％であり、１３質量％であり、１５質量％であり、１７質量％であり、２０質量％であり、２３質量％であり、２５質量％であり、２７質量％であり、３０質量％であり、３３質量％であり、３５質量％である。好ましい含有量の上限値は、本発明の組成物の総量に対して、５０質量％であり、４０質量％であり、３８質量％であり、３５質量％であり、３３質量％であり、３０質量％であり、２８質量％であり、２５質量％であり、２３質量％であり、２０質量％であり、１８質量％であり、１５質量％であり、１３質量％であり、１０質量％であり、８質量％であり、７質量％であり、６質量％であり、５質量％であり、３質量％である。
一般式（Ｎ－１－２）で表される化合物は下記の化合物である。

The compounds represented by formulas (N-2-1.1) to (N-2-1.25) can be used alone or in combination, but the composition of the present invention The lower limits of the preferable content of these compounds alone or of these compounds with respect to the total amount are 5% by mass, 10% by mass, 13% by mass, 15% by mass, 17% by mass, and 20% by mass. %, 23% by mass, 25% by mass, 27% by mass, 30% by mass, 33% by mass, and 35% by mass. Preferred upper limits of the content are 50% by mass, 40% by mass, 38% by mass, 35% by mass, 33% by mass, 30% by mass, and 30% by mass, relative to the total amount of the composition of the present invention. % by mass, 28% by mass, 25% by mass, 23% by mass, 20% by mass, 18% by mass, 15% by mass, 13% by mass, 10% by mass , 8% by mass, 7% by mass, 6% by mass, 5% by mass, and 3% by mass.
The compound represented by general formula (N-1-2) is the following compound.

（式中、Ｒ^Ｎ１２１及びＲ^Ｎ１２２はそれぞれ独立して、一般式（ＩＩ－Ｎ’）におけるＲ^Ｎ１１及びＲ^Ｎ１２と同じ意味を表す。）
Ｒ^Ｎ１２１は炭素原子数１～５のアルキル基又は炭素原子数２～５のアルケニル基が好ましく、エチル基、プロピル基、ブチル基又はペンチル基が好ましい。Ｒ^Ｎ１２２は炭素原子数１～５のアルキル基、炭素原子数４～５のアルケニル基又は炭素原子数１～４のアルコキシ基が好ましく、メチル基、プロピル基、メトキシ基、エトキシ基又はプロポキシ基が好ましい。
本発明の組成物の総量に対しての式（Ｎ－２－２）で表される化合物の好ましい含有量の下限値は、５質量％であり、７質量％であり、１０質量％であり、１３質量％であり、１５質量％であり、１７質量％であり、２０質量％であり、２３質量％であり、２５質量％であり、２７質量％であり、３０質量％であり、３３質量％であり、３５質量％であり、３７質量％であり、４０質量％であり、４２質量％である。好ましい含有量の上限値は、本発明の組成物の総量に対して、５０質量％であり、４８質量％であり、４５質量％であり、４３質量％であり、４０質量％であり、３８質量％であり、３５質量％であり、３３質量％であり、３０質量％であり、２８質量％であり、２５質量％であり、２３質量％であり、２０質量％であり、１８質量％であり、１５質量％であり、１３質量％であり、１０質量％であり、８質量％であり、７質量％であり、６質量％であり、５質量％である。
さらに、一般式（Ｎ－１－２）で表される化合物は、具体的には、

(In the formula, R ^N121 and R ^N122 each independently have the same meaning as R ^N11 and R ^N12 in general formula (II-N′).)
R ^N121 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably an ethyl group, a propyl group, a butyl group or a pentyl group. R ^N122 is preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and is preferably a methyl group, a propyl group, a methoxy group, an ethoxy group or a propoxy group. preferable.
The preferred lower limit of the content of the compound represented by formula (N-2-2) with respect to the total amount of the composition of the present invention is 5% by mass, 7% by mass, and 10% by mass. , 13% by mass, 15% by mass, 17% by mass, 20% by mass, 23% by mass, 25% by mass, 27% by mass, 30% by mass, 33 % by mass, 35% by mass, 37% by mass, 40% by mass, and 42% by mass. Preferred upper limits of the content are 50% by mass, 48% by mass, 45% by mass, 43% by mass, 40% by mass, and 38% by mass, relative to the total amount of the composition of the present invention. % by mass, 35% by mass, 33% by mass, 30% by mass, 28% by mass, 25% by mass, 23% by mass, 20% by mass, 18% by mass , 15% by mass, 13% by mass, 10% by mass, 8% by mass, 7% by mass, 6% by mass, and 5% by mass.
Further, the compound represented by general formula (N-1-2) is specifically

式（Ｎ－２－２．１）から式（Ｎ－２－２．２５）で表される化合物は単独で使用することも、組み合わせて使用することも可能であるが、本発明の組成物の総量に対しての単独又はこれら化合物の好ましい含有量の下限値は、５質量％であり、１０質量％であり、１３質量％であり、１５質量％であり、１７質量％であり、２０質量％であり、２３質量％であり、２５質量％であり、２７質量％であり、３０質量％であり、３３質量％であり、３５質量％である。好ましい含有量の上限値は、本発明の組成物の総量に対して、５０質量％であり、４０質量％であり、３８質量％であり、３５質量％であり、３３質量％であり、３０質量％であり、２８質量％であり、２５質量％であり、２３質量％であり、２０質量％であり、１８質量％であり、１５質量％であり、１３質量％であり、１０質量％であり、８質量％であり、７質量％であり、６質量％であり、５質量％であり、３質量％である。
一般式（Ｎ－１－３）で表される化合物は下記の化合物である。

The compounds represented by formulas (N-2-2.1) to (N-2-2.25) can be used alone or in combination, but the composition of the present invention The lower limit of the preferred content of these compounds alone or with respect to the total amount of is 5% by mass, 10% by mass, 13% by mass, 15% by mass, 17% by mass, 20 % by mass, 23% by mass, 25% by mass, 27% by mass, 30% by mass, 33% by mass, and 35% by mass. Preferred upper limits of the content are 50% by mass, 40% by mass, 38% by mass, 35% by mass, 33% by mass, 30% by mass, and 30% by mass, relative to the total amount of the composition of the present invention. % by mass, 28% by mass, 25% by mass, 23% by mass, 20% by mass, 18% by mass, 15% by mass, 13% by mass, 10% by mass , 8% by mass, 7% by mass, 6% by mass, 5% by mass, and 3% by mass.
The compound represented by general formula (N-1-3) is the following compound.

（式中、Ｒ^Ｎ１３１及びＲ^Ｎ１３２はそれぞれ独立して、一般式（ＩＩ－Ｎ’）におけるＲ^Ｎ１１及びＲ^Ｎ１２と同じ意味を表す。）
本発明の組成物の総量に対しての式（Ｎ－２－３）で表される化合物の好ましい含有量の下限値は、５質量％であり、１０質量％であり、１３質量％であり、１５質量％であり、１７質量％であり、２０質量％である。好ましい含有量の上限値は、本発明の組成物の総量に対して、３５質量％であり、３０質量％であり、２８質量％であり、２５質量％であり、２３質量％であり、２０質量％であり、１８質量％であり、１５質量％であり、１３質量％である。
さらに、一般式（Ｎ－２－３）で表される化合物は、具体的には、下記の各構造式で表される化合物が好ましい。

(In the formula, R ^N131 and R ^N132 each independently have the same meaning as R ^N11 and R ^N12 in general formula (II-N′).)
The preferred lower limit of the content of the compound represented by formula (N-2-3) with respect to the total amount of the composition of the present invention is 5% by mass, 10% by mass, and 13% by mass. , 15% by weight, 17% by weight, and 20% by weight. The upper limit of the preferable content is 35% by mass, 30% by mass, 28% by mass, 25% by mass, 23% by mass, 20% by mass, relative to the total amount of the composition of the present invention. % by mass, 18% by mass, 15% by mass, and 13% by mass.
Furthermore, the compound represented by the general formula (N-2-3) is preferably a compound represented by each of the following structural formulas.

本発明の組成物の総量に対しての単独又はこれら化合物の好ましい含有量の下限値は、５質量％であり、１０質量％であり、１３質量％であり、１５質量％であり、１７質量％であり、２０質量％である。好ましい含有量の上限値は、本発明の組成物の総量に対して、３５質量％であり、３０質量％であり、２８質量％であり、２５質量％であり、２３質量％であり、２０質量％であり、１８質量％であり、１５質量％であり、１３質量％である。
一般式（Ｎ－２－４）で表される化合物は下記の化合物である。

The lower limits of the preferred content of these compounds alone or of these compounds with respect to the total amount of the composition of the present invention are 5% by mass, 10% by mass, 13% by mass, 15% by mass, and 17% by mass. % and 20% by mass. The upper limit of the preferable content is 35% by mass, 30% by mass, 28% by mass, 25% by mass, 23% by mass, 20% by mass, relative to the total amount of the composition of the present invention. % by mass, 18% by mass, 15% by mass, and 13% by mass.
The compound represented by general formula (N-2-4) is the following compound.

（式中、Ｒ^Ｎ１４１及びＲ^Ｎ１４２はそれぞれ独立して、一般式（ＩＩ－Ｎ’）におけるＲ^Ｎ１１及びＲ^Ｎ１２と同じ意味を表す。）
本発明の組成物の総量に対しての式（Ｎ－２－４）で表される化合物の好ましい含有量の下限値は、３質量％であり、５質量％であり、７質量％であり、１０質量％であり、１３質量％であり、１５質量％であり、１７質量％であり、２０質量％である。好ましい含有量の上限値は、本発明の組成物の総量に対して、３５質量％であり、３０質量％であり、２８質量％であり、２５質量％であり、２３質量％であり、２０質量％であり、１８質量％であり、１５質量％であり、１３質量％であり、１１質量％であり、１０質量％であり、８質量％である。
さらに、一般式（Ｎ－１－４）で表される化合物は、具体的には下記の各構造式で表される化合物が好ましい。

(In the formula, R ^N141 and R ^N142 each independently have the same meaning as R ^N11 and R ^N12 in general formula (II-N′).)
The preferred lower limit of the content of the compound represented by formula (N-2-4) with respect to the total amount of the composition of the present invention is 3% by mass, 5% by mass, and 7% by mass. , 10% by mass, 13% by mass, 15% by mass, 17% by mass, and 20% by mass. The upper limit of the preferable content is 35% by mass, 30% by mass, 28% by mass, 25% by mass, 23% by mass, 20% by mass, relative to the total amount of the composition of the present invention. % by mass, 18% by mass, 15% by mass, 13% by mass, 11% by mass, 10% by mass, and 8% by mass.
Furthermore, the compound represented by general formula (N-1-4) is preferably a compound represented by each of the following structural formulas.

一般式（Ｎ－２－５）で表される化合物は下記の化合物である。

The compound represented by general formula (N-2-5) is the following compound.

（式中、Ｒ^Ｎ１５１及びＲ^Ｎ１５２はそれぞれ独立して、一般式（ＩＩ－Ｎ’）におけるＲ^Ｎ１１及びＲ^Ｎ１２と同じ意味を表す。）
本発明の組成物の総量に対しての式（Ｎ－２－５）で表される化合物の好ましい含有量の下限値は、５質量％であり、８質量％であり、１０質量％であり、１３質量％であり、１５質量％であり、１７質量％であり、２０質量％である。好ましい含有量の上限値は、本発明の組成物の総量に対して、３５質量％であり、３３質量％であり、３０質量％であり、２８質量％であり、２５質量％であり、２３質量％であり、２０質量％であり、１８質量％であり、１５質量％であり、１３質量％である。
さらに、一般式（Ｎ－２－５）で表される化合物は、下記の各構造式で表される化合物が好ましい。

(In the formula, R ^N151 and R ^N152 each independently have the same meaning as R ^N11 and R ^N12 in general formula (II-N′).)
The preferred lower limit of the content of the compound represented by formula (N-2-5) with respect to the total amount of the composition of the present invention is 5% by mass, 8% by mass, and 10% by mass. , 13% by mass, 15% by mass, 17% by mass, and 20% by mass. Preferred upper limits of the content are 35% by mass, 33% by mass, 30% by mass, 28% by mass, 25% by mass, 23% by mass, and 23% by mass, relative to the total amount of the composition of the present invention. % by mass, 20% by mass, 18% by mass, 15% by mass, and 13% by mass.
Furthermore, the compound represented by general formula (N-2-5) is preferably a compound represented by each of the following structural formulas.

一般式（Ｎ－２－１０）で表される化合物は下記の化合物である。

The compound represented by general formula (N-2-10) is the following compound.

（式中、Ｒ^{Ｎ１１０１}及びＲ^{Ｎ１１０２}はそれぞれ独立して、一般式（ＩＩ－Ｎ’）におけるＲ^Ｎ１１及びＲ^Ｎ１２と同じ意味を表す。）
本発明の組成物の総量に対しての式（Ｎ－２－１０）で表される化合物の好ましい含有量の下限値は、５質量％であり、１０質量％であり、１３質量％であり、１５質量％であり、１７質量％であり、２０質量％である。好ましい含有量の上限値は、本発明の組成物の総量に対して、３５質量％であり、３０質量％であり、２８質量％であり、２５質量％であり、２３質量％であり、２０質量％であり、１８質量％であり、１５質量％であり、１３質量％である。
さらに、一般式（Ｎ－２－１０）で表される化合物は、下記の各構造式で表される化合物が好ましい。

(In the formula, R ^N1101 and R ^N1102 each independently have the same meaning as R ^N11 and R ^N12 in general formula (II-N′).)
The preferred lower limit of the content of the compound represented by formula (N-2-10) with respect to the total amount of the composition of the present invention is 5% by mass, 10% by mass, and 13% by mass. , 15% by weight, 17% by weight, and 20% by weight. The upper limit of the preferable content is 35% by mass, 30% by mass, 28% by mass, 25% by mass, 23% by mass, 20% by mass, relative to the total amount of the composition of the present invention. % by mass, 18% by mass, 15% by mass, and 13% by mass.
Furthermore, the compound represented by general formula (N-2-10) is preferably a compound represented by each of the following structural formulas.

一般式（Ｎ－２－１１）で表される化合物は下記の化合物である。

The compound represented by general formula (N-2-11) is the following compound.

（式中、Ｒ^{Ｎ１１１１}及びＲ^{Ｎ１１１２}はそれぞれ独立して、一般式（ＩＩ－Ｎ’）におけるＲ^Ｎ１１及びＲ^Ｎ１２と同じ意味を表す。）
本発明の組成物の総量に対しての式（Ｎ－２－１１）で表される化合物の好ましい含有量の下限値は、５質量％であり、１０質量％であり、１３質量％であり、１５質量％であり、１７質量％であり、２０質量％である。好ましい含有量の上限値は、本発明の組成物の総量に対して、３５質量％であり、３０質量％であり、２８質量％であり、２５質量％であり、２３質量％であり、２０質量％であり、１８質量％であり、１５質量％であり、１３質量％である。
さらに、一般式（Ｎ－２－１１）で表される化合物は、具体的には、下記の各構造式で表される化合物が好ましい。

(In the formula, R ^N1111 and R ^N1112 each independently have the same meaning as R ^N11 and R ^N12 in general formula (II-N′).)
Preferred lower limits of the content of the compound represented by formula (N-2-11) with respect to the total amount of the composition of the present invention are 5% by mass, 10% by mass, and 13% by mass. , 15% by weight, 17% by weight, and 20% by weight. The upper limit of the preferable content is 35% by mass, 30% by mass, 28% by mass, 25% by mass, 23% by mass, 20% by mass, relative to the total amount of the composition of the present invention. % by mass, 18% by mass, 15% by mass, and 13% by mass.
Furthermore, the compound represented by general formula (N-2-11) is preferably a compound represented by each of the following structural formulas.

一般式（Ｎ－２－１２）で表される化合物は下記の化合物である。

The compound represented by general formula (N-2-12) is the following compound.

（式中、Ｒ^{Ｎ１１２１}及びＲ^{Ｎ１１２２}はそれぞれ独立して、一般式（ＩＩ－Ｎ’）におけるＲ^Ｎ１１及びＲ^Ｎ１２と同じ意味を表す。）
本発明の組成物の総量に対しての式（Ｎ－２－１２）で表される化合物の好ましい含有量の下限値は、５質量％であり、１０質量％であり、１３質量％であり、１５質量％であり、１７質量％であり、２０質量％である。好ましい含有量の上限値は、本発明の組成物の総量に対して、３５質量％であり、３０質量％であり、２８質量％であり、２５質量％であり、２３質量％であり、２０質量％であり、１８質量％であり、１５質量％であり、１３質量％である。
一般式（Ｎ－２－１３）で表される化合物は下記の化合物である。

(In the formula, R ^N1121 and R ^N1122 each independently have the same meaning as R ^N11 and R ^N12 in general formula (II-N′).)
Preferred lower limits for the content of the compound represented by formula (N-2-12) with respect to the total amount of the composition of the present invention are 5% by mass, 10% by mass, and 13% by mass. , 15% by weight, 17% by weight, and 20% by weight. The upper limit of the preferable content is 35% by mass, 30% by mass, 28% by mass, 25% by mass, 23% by mass, 20% by mass, relative to the total amount of the composition of the present invention. % by mass, 18% by mass, 15% by mass, and 13% by mass.
The compound represented by general formula (N-2-13) is the following compound.

（式中、Ｒ^{Ｎ１１３１}及びＲ^{Ｎ１１３２}はそれぞれ独立して、一般式（ＩＩ－Ｎ’）におけるＲ^Ｎ１１及びＲ^Ｎ１２と同じ意味を表す。）
本発明の組成物の総量に対しての式（Ｎ－２－１３）で表される化合物の好ましい含有量の下限値は、５質量％であり、１０質量％であり、１３質量％であり、１５質量％であり、１７質量％であり、２０質量％である。好ましい含有量の上限値は、本発明の組成物の総量に対して、３５質量％であり、３０質量％であり、２８質量％であり、２５質量％であり、２３質量％であり、２０質量％であり、１８質量％であり、１５質量％であり、１３質量％である。
一般式（Ｎ－１－１４）で表される化合物は下記の化合物である。

(In the formula, R ^N1131 and R ^N1132 each independently have the same meaning as R ^N11 and R ^N12 in general formula (II-N′).)
The preferred lower limit of the content of the compound represented by formula (N-2-13) with respect to the total amount of the composition of the present invention is 5% by mass, 10% by mass, and 13% by mass. , 15% by weight, 17% by weight, and 20% by weight. The upper limit of the preferable content is 35% by mass, 30% by mass, 28% by mass, 25% by mass, 23% by mass, 20% by mass, relative to the total amount of the composition of the present invention. % by mass, 18% by mass, 15% by mass, and 13% by mass.
The compound represented by general formula (N-1-14) is the following compound.

（式中、Ｒ^{Ｎ１１４１}及びＲ^{Ｎ１１４２}はそれぞれ独立して、一般式（ＩＩ－Ｎ’）におけるＲ^Ｎ１１及びＲ^Ｎ１２と同じ意味を表す。）
本発明の組成物の総量に対しての式（Ｎ－２－１４）で表される化合物の好ましい含有量の下限値は、５質量％であり、１０質量％であり、１３質量％であり、１５質量％であり、１７質量％であり、２０質量％である。好ましい含有量の上限値は、本発明の組成物の総量に対して、３５質量％であり、３０質量％であり、２８質量％であり、２５質量％であり、２３質量％であり、２０質量％であり、１８質量％であり、１５質量％であり、１３質量％である。
さらに、一般式（Ｎ－１－１４）で表される化合物は、具体的には、下記の各構造式で表される化合物が好ましい。

(In the formula, R ^N1141 and R ^N1142 each independently have the same meaning as R ^N11 and R ^N12 in general formula (II-N′).)
Preferred lower limits for the content of the compound represented by formula (N-2-14) with respect to the total amount of the composition of the present invention are 5% by mass, 10% by mass, and 13% by mass. , 15% by weight, 17% by weight, and 20% by weight. The upper limit of the preferable content is 35% by mass, 30% by mass, 28% by mass, 25% by mass, 23% by mass, 20% by mass, relative to the total amount of the composition of the present invention. % by mass, 18% by mass, 15% by mass, and 13% by mass.
Furthermore, the compound represented by general formula (N-1-14) is preferably a compound represented by each of the following structural formulas.

一般式（Ｎ－２－２０）で表される化合物は下記の化合物である。

The compound represented by general formula (N-2-20) is the following compound.

（式中、Ｒ^{Ｎ１２０１}及びＲ^{Ｎ１２０２}はそれぞれ独立して、一般式（ＩＩ－Ｎ’）におけるＲ^Ｎ１１及びＲ^Ｎ１２と同じ意味を表す。）
本発明の組成物の総量に対しての式（Ｎ－２－２０）で表される化合物の好ましい含有量の下限値は、５質量％であり、１０質量％であり、１３質量％であり、１５質量％であり、１７質量％であり、２０質量％である。好ましい含有量の上限値は、本発明の組成物の総量に対して、３５質量％であり、３０質量％であり、２８質量％であり、２５質量％であり、２３質量％であり、２０質量％であり、１８質量％であり、１５質量％であり、１３質量％である。
一般式（Ｎ－２－２１）で表される化合物は下記の化合物である。

(In the formula, R ^N1201 and R ^N1202 each independently have the same meaning as R ^N11 and R ^N12 in general formula (II-N′).)
The preferred lower limit of the content of the compound represented by the formula (N-2-20) with respect to the total amount of the composition of the present invention is 5% by mass, 10% by mass, and 13% by mass. , 15% by weight, 17% by weight, and 20% by weight. The upper limit of the preferable content is 35% by mass, 30% by mass, 28% by mass, 25% by mass, 23% by mass, 20% by mass, relative to the total amount of the composition of the present invention. % by mass, 18% by mass, 15% by mass, and 13% by mass.
The compound represented by general formula (N-2-21) is the following compound.

（式中、Ｒ^{Ｎ１２１１}及びＲ^{Ｎ１２１２}はそれぞれ独立して、一般式（ＩＩ－Ｎ’）におけるＲ^Ｎ１１及びＲ^Ｎ１２と同じ意味を表す。）
本発明の組成物の総量に対しての式（Ｎ－２－２１）で表される化合物の好ましい含有量の下限値は、５質量％であり、１０質量％であり、１３質量％であり、１５質量％であり、１７質量％であり、２０質量％である。好ましい含有量の上限値は、本発明の組成物の総量に対して、３５質量％であり、３０質量％であり、２８質量％であり、２５質量％であり、２３質量％であり、２０質量％であり、１８質量％であり、１５質量％であり、１３質量％である。
一般式（Ｎ－２－２２）で表される化合物は下記の化合物である。

(In the formula, R ^N1211 and R ^N1212 each independently have the same meaning as R ^N11 and R ^N12 in general formula (II-N′).)
The preferred lower limit of the content of the compound represented by formula (N-2-21) with respect to the total amount of the composition of the present invention is 5% by mass, 10% by mass, and 13% by mass. , 15% by weight, 17% by weight, and 20% by weight. The upper limit of the preferable content is 35% by mass, 30% by mass, 28% by mass, 25% by mass, 23% by mass, 20% by mass, relative to the total amount of the composition of the present invention. % by mass, 18% by mass, 15% by mass, and 13% by mass.
The compound represented by general formula (N-2-22) is the following compound.

（式中、Ｒ^{Ｎ１２２１}及びＲ^{Ｎ１２２２}はそれぞれ独立して、一般式（Ｎ－１）におけるＲ^Ｎ１１及びＲ^Ｎ１２と同じ意味を表す。）
本発明の組成物の総量に対しての式（Ｎ－２－２１）で表される化合物の好ましい含有量の下限値は、１質量％であり、５質量％であり、１０質量％であり、１３質量％であり、１５質量％であり、１７質量％であり２０質量％である。好ましい含有量の上限値は、本発明の組成物の総量に対して、３５質量％であり、３０質量％であり、２８質量％であり、２５質量％であり、２３質量％であり、２０質量％であり、１８質量％であり、１５質量％であり、１３質量％であり、１０質量％であり、５質量％である。
さらに、一般式（Ｎ－２－２２）で表される化合物は、具体的には、下記の各構造式で表される化合物が好ましい。

(In the formula, R ^N1221 and R ^N1222 each independently have the same meaning as R ^N11 and R ^N12 in general formula (N-1).)
The preferred lower limit of the content of the compound represented by formula (N-2-21) with respect to the total amount of the composition of the present invention is 1% by mass, 5% by mass, and 10% by mass. , 13% by weight, 15% by weight, 17% by weight and 20% by weight. The upper limit of the preferable content is 35% by mass, 30% by mass, 28% by mass, 25% by mass, 23% by mass, 20% by mass, relative to the total amount of the composition of the present invention. % by mass, 18% by mass, 15% by mass, 13% by mass, 10% by mass, and 5% by mass.
Furthermore, the compound represented by the general formula (N-2-22) is preferably a compound represented by each of the following structural formulas.

In the present invention, in addition to the compound represented by the general formula (I) and the compound represented by the general formula (II-N) and, if necessary, the compound represented by the general formula (II-N'), the following general formula (II- It is preferable to contain one or more compounds represented by L). The compound represented by the general formula (II-L) corresponds to a dielectrically almost neutral compound (the value of Δε is -2 to 2). Therefore, the number of polar groups such as halogen contained in the molecule is preferably 2 or less, preferably 1 or less, and preferably absent.

(In the formula, R ^L1 and R ^L2 each independently represent an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent —CH ₂ — in the alkyl group are each independently optionally substituted by -CH=CH-, -C≡C-, -O-, -CO-, -COO- or -OCO-,
n ^L1 represents 0, 1, 2 or 3,
A ^L1 , A ^L2 and A ^L3 are each independently (a) a 1,4-cyclohexylene group (one —CH ₂ — present in this group or two or more non-adjacent —CH ₂ — may be replaced with —O—.) and (b) 1,4-phenylene groups (one —CH= or two or more non-adjacent —CH= present in this group may be —N = may be replaced.)
(c) naphthalene-2,6-diyl group, 1,2,3,4-tetrahydronaphthalene-2,6-diyl group or decahydronaphthalene-2,6-diyl group (naphthalene-2,6-diyl group or One —CH= or two or more non-adjacent —CH= present in the 1,2,3,4-tetrahydronaphthalene-2,6-diyl group may be replaced with —N=. )
represents a group selected from the group consisting of, the above group (a), group (b) and group (c) may each independently be substituted with a cyano group, a fluorine atom or a chlorine atom,
Z ^L1 and Z ^L2 are each independently a single bond, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, -OCF ₂ -, -CF ₂ O-, -CH=N-N=CH-, -CH=CH-, -CF=CF- or -C≡C-,
When n ^L1 is 2 or 3 and there are a plurality of A ^L2 , they may be the same or different, and when n ^L1 is 2 or 3 and there are a plurality of Z ^L2 , they may be the same or different, except for compounds represented by general formula (I). )

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

In the composition of the present invention, the content of the compound represented by the general formula (II-L) is determined by solubility at low temperature, transition temperature, electrical reliability, birefringence, process suitability, drip marks, It is necessary to make appropriate adjustments according to required performance such as image sticking and dielectric anisotropy.

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

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

Both R ^L1 and R ^L2 are preferably alkyl groups when emphasis is placed on reliability, and preferably alkoxy groups when emphasis is placed on reducing the volatility of the compound, and emphasis is placed on reducing viscosity. If so, at least one is preferably an alkenyl group.

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

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

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

^nL1 is preferably 0 when the response speed is emphasized, 2 or 3 is preferable for improving the upper limit temperature of the nematic phase, and 1 is preferable for balancing these. Moreover, in order to satisfy the properties required for the composition, it is preferable to combine compounds having different values.

A ^L1 , A ^L2 and A ^L3 are preferably aromatic when it is desired to increase Δn, preferably aliphatic for improving the response speed, and each independently trans- 1,4-cyclohexylene group, 1,4-phenylene group, 2-fluoro-1,4-phenylene group, 3-fluoro-1,4-phenylene group, 3,5-difluoro-1,4-phenylene group , 1,4-cyclohexenylene group, 1,4-bicyclo[2.2.2]octylene group, piperidine-1,4-diyl group, naphthalene-2,6-diyl group, decahydronaphthalene-2,6 -diyl group or 1,2,3,4-tetrahydronaphthalene-2,6-diyl group, more preferably the following structure,

It more preferably represents a trans-1,4-cyclohexylene group or a 1,4-phenylene group.

Z ^L1 and Z ^L2 are preferably single bonds when the response speed is important.
The compound represented by formula (II-L) preferably has 0 or 1 halogen atoms in the molecule.

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

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

(In the formula, R ^L11 and R ^L12 each independently have the same meaning as R ^L1 and R ^L2 in general formula (II-L).)
R ^L11 and R ^L12 are preferably linear 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. .

The compound represented by general formula (L-1) can be used alone, or two or more compounds can be used in combination. Although there is no particular limitation on the types of compounds that can be combined, they are appropriately used in combination according to the required properties such as low-temperature solubility, transition temperature, electrical reliability, and birefringence. The types of compounds to be used are, for example, one type, two types, three types, four types, and five or more types as one embodiment of the present invention.

Preferred lower limits of the content are 1% by mass, 2% by mass, 3% by mass, 5% by mass, 7% by mass, and 10% by mass, relative to the total amount of the composition of the present invention. % by mass, 15% by mass, 20% by mass, 25% by mass, 30% by mass, 35% by mass, 40% by mass, 45% by mass, 50% by mass and 55% by mass. The upper limit of the preferable content is 95% by mass, 90% by mass, 85% by mass, 80% by mass, 75% by mass, 70% by mass, relative to the total amount of the composition of the present invention. % by mass, 65% by mass, 60% by mass, 55% by mass, 50% by mass, 45% by mass, 40% by mass, 35% by mass, 30% by mass and 25% by mass.

When the viscosity of the composition of the present invention is kept low and a composition having a high response speed is required, it is preferable that the above lower limit value is high and the upper limit value is high. Furthermore, when a composition of the present invention is required to have a high Tni and good temperature stability, it is preferred that the above lower limit is moderate and the upper limit is moderate. Further, 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 and the upper limit value are low.

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

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

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

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

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

Furthermore, the compound represented by general formula (L-1-2) is a compound selected from the group of compounds represented by formulas (L-1-2.1) to (L-1-2.4). and preferably compounds represented by formulas (L-1-2.2) to (L-1-2.4). In particular, the compound represented by formula (L-1-2.2) is preferred because it particularly improves the response speed of the composition of the present invention. Further, when obtaining Tni higher than the response speed, it is preferable to use a compound represented by formula (L-1-2.3) or formula (L-1-2.4). The content of the compounds represented by formulas (L-1-2.3) and (L-1-2.4) is preferably 30% by mass or more in order to improve solubility at low temperatures. .

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

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

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

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

The preferred lower limit of the content of the compound represented by formula (L-1-3) with respect to the total amount of the composition of the present invention is 1% by mass, 5% by mass, and 10% by mass. , 13% by mass, 15% by mass, 17% by mass, 20% by mass, 23% by mass, 25% by mass, and 30% by mass. Preferred upper limits of the content are 60% by mass, 55% by mass, 50% by mass, 45% by mass, 40% by mass, and 37% by mass, relative to the total amount of the composition of the present invention. % by mass, 35% by mass, 33% by mass, 30% by mass, 27% by mass, 25% by mass, 23% by mass, 20% by mass, 17% by mass , 15% by mass, 13% by mass, and 10% by mass.
Furthermore, the compound represented by general formula (L-1-3) is a compound selected from the group of compounds represented by formulas (L-1-3.1) to (L-1-3.13). is preferably a compound represented by formula (L-1-3.1), formula (L-1-3.3) or formula (L-1-3.4). In particular, the compound represented by formula (L-1-3.1) is preferred because it particularly improves the response speed of the composition of the present invention. Further, when obtaining Tni higher than the response speed, formula (L-1-3.3), formula (L-1-3.4), formula (L-1-3.11) and formula (L- 1-3.12) is preferably used. Sum of compounds represented by formula (L-1-3.3), formula (L-1-3.4), formula (L-1-3.11) and formula (L-1-3.13) The content of is not preferably 20% by mass or more in order to improve the solubility at low temperatures.

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

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

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

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

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

Furthermore, compounds represented by general formulas (L-1-4) and (L-1-5) are represented by formulas (L-1-4.1) to (L-1-5.3). is preferably a compound selected from the group of compounds represented by formula (L-1-4.2) or formula (L-1-5.2).

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

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

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

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

The compound represented by general formula (L-2) is the following compound.

(In the formula, R ^L21 and R ^L22 each independently have the same meaning as R ^L1 and R ^L2 in general formula (II-L).)
R ^L21 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and R ^L22 is an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms, or a carbon atom Alkoxy groups of numbers 1 to 4 are preferred.

The compound represented by general formula (L-2) can be used alone, or two or more compounds can be used in combination. Although there is no particular limitation on the types of compounds that can be combined, they are appropriately used in combination according to the required properties such as low-temperature solubility, transition temperature, electrical reliability, and birefringence. The types of compounds to be used are, for example, one type, two types, three types, four types, and five or more types as one embodiment of the present invention.

If the solubility at low temperatures is important, setting the content high will produce a high effect. Conversely, if the response speed is important, setting the content low will produce a high effect. Furthermore, in order to improve drip marks and seizure properties, it is preferable to set the range of the content in the middle.

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

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

The compound represented by general formula (L-3) is the following compound.

(wherein R ^L31 and R ^L32 each independently represent an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent -CH ₂ - each independently may be substituted with -O-, -CO-, -COO- or -OCO-.)
R ^L31 and R ^L32 are each independently preferably an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

The compound represented by general formula (L-3) can be used alone, or two or more compounds can be used in combination. Although there is no particular limitation on the types of compounds that can be combined, they are appropriately used in combination according to the required properties such as low-temperature solubility, transition temperature, electrical reliability, and birefringence. The types of compounds to be used are, for example, one type, two types, three types, four types, and five or more types as one embodiment of the present invention.

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

When the birefringence is to be obtained, setting the content to a high value is effective, and conversely, when a high Tni is emphasized, setting the content to a low value is effective. Furthermore, in order to improve drip marks and seizure properties, it is preferable to set the range of the content in the middle.

Furthermore, the compound represented by the general formula (L-3) is preferably a compound selected from the group of compounds represented by the formulas (L-3.1) to (L-3.7), and the formula Compounds represented by formulas (L-3.2) to (L-3.3) are preferred.

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

(In the formula, R ^L41 and R ^L42 each independently have the same meaning as R ^L1 and R ^L2 in general formula (II-L).)
R ^L41 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and R ^L42 is an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms, or a carbon atom Alkoxy groups of numbers 1 to 4 are preferred. )
The compound represented by general formula (L-4) can be used alone, or two or more compounds can be used in combination. Although there is no particular limitation on the types of compounds that can be combined, they are appropriately used in combination according to the required properties such as low-temperature solubility, transition temperature, electrical reliability, and birefringence. The types of compounds to be used are, for example, one type, two types, three types, four types, and five or more 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-4) is determined by solubility at low temperature, transition temperature, electrical reliability, birefringence, process suitability, drip marks, It is necessary to make appropriate adjustments according to required performance such as image sticking and dielectric anisotropy.

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

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

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

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

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

Depending on the required performance such as low-temperature solubility, transition temperature, electrical reliability, and birefringence, even if the compound represented by formula (L-4.4) is contained, formula (L -4.5), it contains both the compound represented by formula (L-4.4) and the compound represented by formula (L-4.5) It's okay to be there.

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

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

The compound represented by general formula (L-4) is preferably a compound represented by formula (L-4.7) to formula (L-4.10), particularly formula (L-4. Compounds represented by 9) are preferred.

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

(In the formula, R ^L51 and R ^L52 each independently have the same meaning as R ^L1 and R ^L2 in general formula (II-L).)
R ^L51 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and R ^L52 is an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms, or a carbon atom Alkoxy groups of numbers 1 to 4 are preferred.

The compound represented by general formula (L-5) can be used alone, or two or more compounds can be used in combination. Although there is no particular limitation on the types of compounds that can be combined, they are appropriately used in combination according to the required properties such as low-temperature solubility, transition temperature, electrical reliability, and birefringence. The types of compounds to be used are, for example, one type, two types, three types, four types, and five or more 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-5) is determined by solubility at low temperature, transition temperature, electrical reliability, birefringence, process suitability, drip marks, It is necessary to make appropriate adjustments according to required performance such as image sticking and dielectric anisotropy.

Preferred lower limits for the content of the compound represented by formula (L-5) with respect to the total amount of the composition of the present invention are 1% by mass, 2% by mass, 3% by mass, and 5% by mass. % by mass, 7% by mass, 10% by mass, 14% by mass, 16% by mass, 20% by mass, 23% by mass, 26% by mass, 30% by mass , 35% by mass, and 40% by mass. The upper limit of the preferable content of the compound represented by formula (L-5) with respect to the total amount of the composition of the present invention is 50% by mass, 40% by mass, 35% by mass, 30% by mass, % by mass, 20% by mass, 15% by mass, 10% by mass, and 5% by mass The compound represented by general formula (L-5) is represented by formula (L-5.1) Alternatively, the compound represented by formula (L-5.2) is preferable, and the compound represented by formula (L-5.1) is particularly preferable.

The lower limits of the preferable content of these compounds with respect to the total amount of the composition of the present invention are 1% by mass, 2% by mass, 3% by mass, 5% by mass, and 7% by mass. be. The upper limits of the preferred content of these compounds are 20% by mass, 15% by mass, 13% by mass, 10% by mass, and 9% by mass.

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 limits of the preferable content of these compounds with respect to the total amount of the composition of the present invention are 1% by mass, 2% by mass, 3% by mass, 5% by mass, and 7% by mass. be. The upper limits of the preferred content of these compounds are 20% by mass, 15% by mass, 13% by mass, 10% by mass, and 9% by mass.

The compound represented by the general formula (L-5) is preferably a compound selected from the group of compounds represented by the formulas (L-5.5) to (L-5.7), particularly the formula ( A compound represented by L-5.7) is preferred.

The lower limits of the preferable content of these compounds with respect to the total amount of the composition of the present invention are 1% by mass, 2% by mass, 3% by mass, 5% by mass, and 7% by mass. be. The upper limits of the preferred content of these compounds are 20% by mass, 15% by mass, 13% by mass, 10% by mass, and 9% by mass.

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

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

The compounds represented by general formula (L-6) can be used alone, or two or more compounds can be used in combination. Although there is no particular limitation on the types of compounds that can be combined, they are appropriately used in combination according to the required properties such as low-temperature solubility, transition temperature, electrical reliability, and birefringence. The types of compounds to be used are, for example, one type, two types, three types, four types, and five or more types as one embodiment of the present invention.

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

The compounds represented by general formula (L-6) are preferably compounds represented by formulas (L-6.1) to (L-6.9).

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

Furthermore, the compound represented by the general formula (L-6) is preferably a compound represented by, for example, the formulas (L-6.10) to (L-6.17). A compound represented by L-6.11) is preferred.

The lower limits of the preferable content of these compounds with respect to the total amount of the composition of the present invention are 1% by mass, 2% by mass, 3% by mass, 5% by mass, and 7% by mass. be. The upper limits of the preferred content of these compounds are 20% by mass, 15% by mass, 13% by mass, 10% by mass, and 9% by mass.

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

(Wherein, R ^L71 and R ^L72 each independently represent the same meaning as R ^L1 and R ^L2 in general formula (II-L), A ^L71 and A ^L72 each independently represent general formula (II-L) has the same meaning as A ^L2 and A ^L3 in, but the hydrogen atoms on A ^L71 and A ^L72 may each independently be substituted with a fluorine atom, and Z ^L71 is Z ^L2 in general formula (II-L) and each of ^XL71 and ^XL72 independently represents a fluorine atom or a hydrogen atom.)
In the formula, R ^L71 and R ^L72 are each independently preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and A ^L71 and A ^L72 . are each independently preferably a 1,4-cyclohexylene group or a 1,4-phenylene group, hydrogen atoms on A ^L71 and A ^L72 may each independently be substituted with a fluorine atom, and Z ^L71 is a single A bond or COO- is preferred, a single bond is preferred, and X ^L71 and X ^L72 are preferably hydrogen atoms.

Although there is no particular limitation on the types of compounds that can be combined, they are combined according to the required properties such as low-temperature solubility, transition temperature, electrical reliability, and birefringence. The types of compounds to be used are, 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) is determined by solubility at low temperature, transition temperature, electrical reliability, birefringence, process suitability, drip marks, It is necessary to make appropriate adjustments according to required performance such as image sticking and dielectric anisotropy.

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

If a high Tni embodiment of the composition of the present invention is desired, it is preferable to increase the content of the compound represented by formula (L-7), and if a low viscosity embodiment is desired, the content should be kept to a minimum.

Furthermore, the compound represented by general formula (L-7) is preferably a compound represented by formula (L-7.1) to formula (L-7.4), and the compound represented by formula (L-7. A compound represented by 2) is preferable.

Furthermore, the compound represented by general formula (L-7) is preferably a compound represented by formula (L-7.11) to formula (L-7.13), and the compound represented by formula (L-7. A compound represented by 11) is preferable.

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

Furthermore, the compound represented by general formula (L-7) is preferably a compound represented by formula (L-7.31) to formula (L-7.34), and the compound represented by formula (L-7. 31) or/and a compound represented by formula (L-7.32).

Furthermore, the compound represented by general formula (L-7) is preferably a compound represented by formula (L-7.41) to formula (L-7.44), and the compound represented by formula (L-7. 41) or/and a compound represented by formula (L-7.42).

Further, the compounds represented by general formula (L-7) are preferably compounds represented by formulas (L-7.51) to (L-7.53).

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

General formula (i), general formula (ii), general formulas (L-1) to (L-7) and (M-1) to (M-8) for the total amount of the composition of the present invention The lower limit value of the total preferable content of the compounds to be used is 80% by mass, 85% by mass, 88% by mass, 90% by mass, 92% by mass, 93% by mass, 94% by mass, 95% by mass, 96% by mass, 97% by mass, 98% by mass, 99% by mass, and 100% by mass. Preferred upper limits of the content are 100% by mass, 99% by mass, 98% by mass, and 95% by mass.

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

When the reliability and long-term stability of the composition are emphasized, the content of the compound having a carbonyl group is preferably 5% by mass or less, preferably 3% by mass or less, relative to the total mass of the composition. is more preferable, more preferably 1% by mass or less, and most preferably not substantially contained.

When the stability against UV irradiation is emphasized, the content of the compound substituted with chlorine atoms is preferably 15% by mass or less, preferably 10% by mass or less, relative to the total mass of the composition. , preferably 8% by mass or less, more preferably 5% by mass or less, preferably 3% by mass or less, and further preferably not substantially contained.

It is preferable to increase the content of compounds having all 6-membered ring structures in the molecule, and the content of compounds having all 6-membered ring structures in the molecule is increased to 80% relative to the total mass of the composition. It is preferably at least 90% by mass, more preferably at least 95% by mass, and further preferably at least 95% by mass. Constructing things is most preferred.

In order to suppress the deterioration of the composition due to oxidation, it is preferable to reduce the content of the compound having a cyclohexenylene group as a ring structure, and the content of the compound having a cyclohexenylene group is added to the total mass of the composition. On the other hand, it is preferably 10% by mass or less, preferably 8% by mass or less, more preferably 5% by mass or less, preferably 3% by mass or less, and substantially does not contain More preferred.

When emphasizing improvement of viscosity and improvement of Tni, it is possible to reduce the content of a compound having a 2-methylbenzene-1,4-diyl group in the molecule, in which a hydrogen atom may be substituted with a halogen. Preferably, the content of the compound having a 2-methylbenzene-1,4-diyl group in the molecule is 10% by mass or less, preferably 8% by mass or less, relative to the total mass of the composition. is preferred, it is more preferably 5% by mass or less, preferably 3% by mass or less, and even more preferably not substantially contained.

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

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

The average elastic constant (K _AVG ) of the liquid crystal composition used in the present invention is preferably 10 to 25, and the lower limit thereof is preferably 10, preferably 10.5, preferably 11, and preferably 11.5. , preferably 12, preferably 12.3, preferably 12.5, preferably 12.8, preferably 13, preferably 13.3, preferably 13.5, preferably 13.8, preferably 14, 14 .3 is preferred, 14.5 is preferred, 14.8 is preferred, 15 is preferred, 15.3 is preferred, 15.5 is preferred, 15.8 is preferred, 16 is preferred, 16.3 is preferred, 16 .5 is preferred, 16.8 is preferred, 17 is preferred, 17.3 is preferred, 17.5 is preferred, 17.8 is preferred, 18 is preferred, and the upper limit thereof is preferably 25 and 24.5. is preferred, 24 is preferred, 23.5 is preferred, 23 is preferred, 22.8 is preferred, 22.5 is preferred, 22.3 is preferred, 22 is preferred, 21.8 is preferred, 21.5 is preferred , preferably 21.3, preferably 21, preferably 20.8, preferably 20.5, preferably 20.3, preferably 20, preferably 19.8, preferably 19.5, preferably 19.3 , 19 is preferred, 18.8 is preferred, 18.5 is preferred, 18.3 is preferred, 18 is preferred, 17.8 is preferred, 17.5 is preferred, 17.3 is preferred, 17 is preferred. When emphasizing reduction of power consumption, it is effective to suppress the amount of light of the _backlight , and it is preferable to improve the light transmittance of the liquid crystal display element. preferable. It is preferable to set the value of _KAVG to a high value when emphasizing the improvement of the response speed.

(Orientation aid)
The alignment aid (spontaneous alignment compound) is a member that directly contacts the liquid crystal layer containing the liquid crystal composition (electrode (e.g., ITO), substrate (e.g., glass substrate, acrylic substrate, transparent substrate, flexible substrate, etc.), resin It interacts with a layer (e.g. color filter, alignment film, overcoat layer, etc.), insulating film (e.g., inorganic material film, SiNx, etc.) to cause homeotropic alignment or homogeneous alignment of liquid crystal molecules contained in the liquid crystal layer. It has a function to induce

The alignment aid used in the present invention is a compound having, in its molecular structure, a polymerizable group, a mesogenic group, an adsorptive group capable of interacting with a member in direct contact with the liquid crystal layer, and an alignment-inducing group. preferable.

It is preferable that the mesogenic group is bonded to the adsorptive group and the orientation-inducing group, and the polymerizable group is substituted directly or optionally through a spacer group on the mesogenic group, the adsorptive group and the orientation-inducing group. In particular, the polymerizable group preferably substitutes the mesogenic group while being incorporated into the adsorptive group.

In the following chemical formulas, * at the left end and * at the right end represent a bond.

"orientation-inducing group"
The alignment-inducing group has a function of inducing alignment of liquid crystal molecules, and is preferably a group represented by the following general formula (AK).

In the formula, R ^AK1 represents a linear or branched alkyl group having 1 to 20 carbon atoms. provided that one or two or more non-adjacent -CH ₂ - in the alkyl group are each independently -CH=CH-, -C≡C-, -O-, -CO-, -COO- or It may be substituted with -OCO-, and one or more hydrogen atoms in the alkyl group may each independently be substituted with a halogeno group.

R ^AK1 preferably represents a linear or branched alkyl group having 1 to 20 carbon atoms, more preferably a linear alkyl group having 1 to 20 carbon atoms. More preferably, it represents an alkyl group having 1 to 8 carbon atoms.

In addition, one or two or more non-adjacent -CH ₂ - in the alkyl group are each independently -CH=CH-, -C≡C-, -O-, -CO-, -COO- or -OCO- may be substituted.

Furthermore, hydrogen atoms in the alkyl group may be substituted with fluorine atoms or chlorine atoms, or may be substituted with fluorine atoms.

From the viewpoint of imparting so-called amphiphilicity to the alignment aid, the alignment guide group is preferably bonded to the side of the mesogenic group opposite to the adsorption group.

"polymerizable group"
The polymerizable group is represented by P ^AP1 - and is preferably bonded to the mesogenic group via -Sp ^AP1 - (single bond or spacer group).

^PAP1 is preferably a group selected from the group represented by the following general formulas (AP-1) to (AP-9).

In the formula, R ^AP1 and R ^AP2 each independently represent a hydrogen atom, an alkyl group having 1 to 5 carbon atoms or a halogenated alkyl group having 1 to 10 carbon atoms. However, one or more —CH ₂ — in the alkyl group may be substituted with —O— or —CO— so that the oxygen atoms are not directly adjacent to each other, and one or more —CH 2 — in the alkyl group Each of the above hydrogen atoms may be independently substituted with a halogen atom or a hydroxyl group.

W ^AP1 represents a single bond, -O-, -COO-, -OCO- or -CH ₂ -.

^tAP1 represents 0, 1 or 2;

P ^AP1 is preferably a group represented by the following general formulas (AP-1) to (AP-7), and is represented by the following general formula (AP-1) or general formula (AP-2). is more preferably a group represented by the general formula (AP-1).

Sp ^AP1 preferably represents a single bond or a linear or branched alkylene group having 1 to 20 carbon atoms, more preferably a single bond or a linear alkylene group having 1 to 20 carbon atoms. It preferably represents a single bond or a linear alkylene group having 2 to 10 carbon atoms.

In Sp ^AP1 , one or two or more —CH ₂ — in the alkylene group are independently —CH═CH—, —C≡C—, —O, and are not directly adjacent to oxygen atoms. -, -CO-, -COO- or -OCO- may be substituted.

In the alignment aid, the number of P ^AP1 -Sp ^AP1 - is preferably 1 or more and 5 or less, more preferably 1 or more and 4 or less, and 2 or more and 4 or less. More preferably, two or three are particularly preferred, and two is most preferred.

A hydrogen atom in P ^AP1 -Sp ^AP1 - may be substituted with a polymerizable group, an adsorptive group and/or an orientation-inducing group.

P ^AP1 -Sp ^AP1 - may be attached to a polymerizable group, a mesogenic group, an adsorptive group and/or an orientation-inducing group.

In addition, P ^AP1 -Sp ^AP1 - preferably binds to a mesogenic group, an adsorptive group or an orientation-inducing group, and more preferably binds to a mesogenic group or an adsorptive group.

When a plurality of P ^AP1 and/or Sp ^AP1 - are present in the molecule, they may be the same or different.

"Mesogenic group"
A mesogenic group refers to a group with a rigid portion, such as a group with one or more cyclic groups, preferably a group with 2 to 4 cyclic groups, with 3 to 4 cyclic groups. group is more preferred. In addition, the cyclic group may be connected by a connecting group as necessary. The mesogenic group preferably has a skeleton similar to that of liquid crystal molecules (liquid crystal compounds) used in the liquid crystal layer.

As used herein, the term "cyclic group" refers to an atomic group in which constituent atoms are cyclically bonded, and includes a carbocyclic ring, a heterocyclic ring, a saturated or unsaturated cyclic structure, a monocyclic structure, a bicyclic structure, Including polycyclic structures, aromatics, non-aromatics, and the like.

In addition, the cyclic group may contain at least one heteroatom and may be substituted with at least one substituent (halogeno group, polymerizable group, organic group (alkyl group, alkoxy group, aryl group, etc.) If the cyclic group is monocyclic, the mesogenic group preferably contains two or more monocyclic rings.

The mesogenic group is preferably represented by general formula (AL), for example.

wherein Z ^AL1 is 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. However, one or more -CH ₂ - in the alkylene group may be replaced with -O-, -COO- or -OCO- so that the oxygen atoms are not directly adjacent to each other.

A ^AL1 and A ^AL2 each independently represent a divalent cyclic group.

One or more hydrogen atoms in Z ^AL1 , A ^AL1 and A ^AL2 may each independently be substituted with a halogeno group, an adsorptive group, P ^AP1 —Sp ^AP1 — or a monovalent organic group. ,
When multiple Z ^AL1 and A ^AL1 are present in the molecule, they may be the same or different.

m ^AL1 represents an integer of 1-5.

In the general formula (AL), Z ^AL1 is preferably a single bond or an alkylene group having 2 to 20 carbon atoms, more preferably a single bond or an alkylene group having 2 to 10 carbon atoms. , -(CH ₂ ) ₂ - or -(CH ₂ ) ₄ - is more preferred. One or more —CH ₂ — in the alkylene group may be replaced with —O—, —COO— or —OCO— such that the oxygen atoms are not directly adjacent.

Furthermore, when the purpose is to increase the linearity of the rod-like molecule, Z ^AL1 may be a single bond in which the rings are directly connected, or a single bond in which the number of atoms directly connecting the rings is an even number. Morphology is preferred. For example, in the case of -CH ₂ -CH ₂ COO-, the number of atoms directly connecting rings is four.

In general formula (AL), A ^AL1 and A ^AL2 each independently represent a divalent cyclic group. Divalent cyclic groups include 1,4-phenylene group, 1,4-cyclohexylene group, 1,4-cyclohexenyl group, tetrahydropyran-2,5-diyl group, 1,3-dioxane-2, 5-diyl group, tetrahydrothiopyran-2,5-diyl group, thiophene-2,5-diyl group, 1,4-bicyclo(2.2.2)octylene group, decahydronaphthalene-2,6-diyl group , pyridine-2,5-diyl group, pyrimidine-2,5-diyl group, pyrazine-2,5-diyl group, thiophene-2,5-diyl group-, 1,2,3,4-tetrahydronaphthalene-2 ,6-diyl group, 2,6-naphthylene group, phenanthrene-2,7-diyl group, 9,10-dihydrophenanthrene-2,7-diyl group, 1,2,3,4,4a,9,10a- octahydrophenanthrene-2,7-diyl group, 1,4-naphthylene group, benzo[1,2-b:4,5-b']dithiophene-2,6-diyl group, benzo[1,2-b: 4,5-b′]diselenophen-2,6-diyl group, [1]benzothieno[3,2-b]thiophene-2,7-diyl group, [1]benzoselenopheno[3,2-b]selenophene -2,7-diyl group and fluorene-2,7-diyl group, preferably one selected from the group consisting of 1,4-phenylene group, 1,4-cyclohexylene group, 2,6- A naphthylene group or a phenanthrene-2,7-diyl group is more preferred, and a 1,4-phenylene group or 1,4-cyclohexylene group is even more preferred.

In addition, these groups may be unsubstituted or substituted with a substituent. This substituent is preferably a fluorine atom or an alkyl group having 1 to 8 carbon atoms. Furthermore, alkyl groups may be substituted with fluorine atoms or hydroxyl groups.

Also, one or more hydrogen atoms in the cyclic group may be substituted with a halogeno group, an adsorptive group, P ^AP1 —Sp ^AP1 — or a monovalent organic group.

In the general formula (AL), the monovalent organic group is a group having a chemical structure formed by forming an organic compound in the form of a monovalent group, and is formed by removing one hydrogen atom from the organic compound. A group of atoms.

Examples of such monovalent organic groups include alkyl groups having 1 to 15 carbon atoms, alkenyl groups having 2 to 15 carbon atoms, alkoxy groups having 1 to 14 carbon atoms, and alkenyloxy groups having 2 to 15 carbon atoms. and the like, preferably an alkyl group having 1 to 15 carbon atoms or an alkoxy group having 1 to 14 carbon atoms, an alkyl group having 1 to 8 carbon atoms or an alkoxy group having 1 to 8 carbon atoms is more preferably an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, an alkyl group having 1 to 3 carbon atoms or an alkyl group having 1 to 2 carbon atoms An alkoxy group is particularly preferred, and an alkyl group having 1 or 2 carbon atoms or an alkoxy group having 1 carbon atom is most preferred.

One or more —CH ₂ — in the alkyl group, alkenyl group, alkoxy group, or alkenyloxy group may be —O—, —COO—, or —OCO— so that oxygen atoms are not directly adjacent to each other. may be substituted. Furthermore, the above-mentioned monovalent organic group may serve as the above-mentioned orientation-inducing group.

In general formula (AL), m ^AL1 is preferably an integer of 1 to 4, more preferably an integer of 1 to 3, and even more preferably 2 or 3.

Preferred forms of the mesogenic group include the following formulas (me-1) to (me-44).

General formula (AL) is a structure in which two hydrogen atoms are eliminated from these compounds.

In these formulas (me-1) to (me-44), one or more hydrogen atoms in the cyclohexane ring, benzene ring or naphthalene ring are each independently a halogeno group, P ^AP1 -Sp ^AP1 -, a monovalent organic group (eg, an alkyl group having 1 to 15 carbon atoms, an alkoxy group having 1 to 14 carbon atoms), an adsorptive group, or an orientation-inducing group.

Among the above mesogenic groups, preferred forms are formulas (me-8) to (me-44), and more preferred forms are formulas (me-8) to (me-10), formulas (me-12) to (me-18), formulas (me-22) to (me-24), formulas (me-26) to (me-27) and formulas (me-29) to (me-44), more preferred forms is the formula (me-12), (me-14), (me-16), (me-22) ~ (me-24), (me-29), (me-34), (me-36) ~ (me-37), (me-42) ~ (me-44).

Among the above mesogenic groups, a particularly preferred form is the following general formula (AL-1) or (AL-2), and the most preferred form is the following general formula (AL-1).

In the formulae, X ^AL101 to X ^AL118 and X ^AL201 to X ^AL214 are each independently a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms, a halogeno group, P ^APl — Sp ^APl - represents an adsorptive group or the orientation-inducing group described later.

Ring A ^AL11 , Ring A ^AL12 and Ring A ^AL21 each independently represent a cyclohexane ring or a benzene ring.

Any one or two or more of X ^AL101 to X ^AL118 and X ^AL201 to X ^AL214 are substituted with an adsorptive group described later.

Any one or two or more of X ^AL101 to X ^AL118 and X ^AL201 to X ^AL214 are substituted with the alignment-inducing group.

The adsorptive group and the orientation-inducing group, which will be described later, may be substituted with P ^AP1 -Sp ^AP1 -.

General formula (AL-1) or general formula (AL-2) has one or more P ^{AP1 -Sp APl} - in its molecule.

In general formula (AL-1), ^XAL101 is preferably the orientation-inducing group.

In general formula (AL-1), at least one of X ^AL109 , X ^AL110 and X ^AL111 is preferably an adsorptive group described later, and both X ^AL109 and X ^AL110 are adsorptive groups described later, or X ^AL110 is described later. It is more preferable that ^XAL110 is an adsorptive group to be described later.

In general formula (AL-1), at least one of X ^AL109 , X ^AL110 and X ^AL111 is preferably P ^AP1 —Sp ^AP1 — among the adsorptive groups described later or an adsorptive group having a polymerizable site in the structure. , X ^AL109 and/or X ^AL111 are more preferably P ^AP1 -Sp ^AP1 -.

In general formula (AL-1), one or two of X ^AL104 to X ^AL108 and X ^AL112 to X ^AL116 are each independently an alkyl group having 1 to 5 carbon atoms and an alkoxy group having 1 to 5 carbon atoms. or a halogeno group, more preferably an alkyl group having 1 to 3 carbon atoms or a fluorine atom. In particular, X ^AL105 , X ^AL106 or X ^AL107 are each independently preferably an alkyl group having 1 to 3 carbon atoms or a fluorine atom.

In general formula (AL-2), X ^AL201 is preferably the orientation-inducing group.

In general formula (AL-2), it is preferable that at least one of X ^AL207 , X ^AL208 and X ^AL209 is an adsorptive group described later, and both X ^AL207 and X ^AL208 are adsorptive groups described later, or X ^AL208 is described later. It is more preferable that X ^AL208 is an adsorptive group to be described later.

In general formula (AL-2), at least one of X ^AL207 , X ^AL208 and X ^AL209 is preferably P ^AP1 —Sp ^AP1 — among the adsorptive groups described later or an adsorptive group having a polymerizable site in the structure. , X ^AL207 and/or X ^AL209 are more preferably P ^AP1 -Sp ^AP1 -.

In general formula (AL-2), one or two of X ^AL202 to X ^AL206 and X ^AL210 to X ^AL214 are each independently an alkyl group having 1 to 5 carbon atoms and an alkoxy group having 1 to 5 carbon atoms. or a halogeno group, more preferably an alkyl group having 1 to 3 carbon atoms or a fluorine atom. In particular, X ^AL204 , X ^AL205 or X ^AL206 are each independently preferably an alkyl group having 1 to 3 carbon atoms or a fluorine atom.

"adsorption group"
The adsorptive group is a group having a role of adsorbing an adsorbent, which is a layer in contact with the liquid crystal composition, such as a substrate, film, or electrode.

Adsorption is generally classified into chemisorption, in which a chemical bond (covalent bond, ionic bond, or metallic bond) is formed to adsorb between an adsorbent and an adsorbate, and physical adsorption other than chemisorption. In the present specification, adsorption may be either chemical adsorption or physical adsorption, but physical adsorption is preferred. Therefore, the adsorptive group is preferably a group capable of physically adsorbing the adsorbent, and more preferably a group capable of bonding with the adsorbent by intermolecular force.

The form of bonding with the adsorbent by intermolecular forces includes forms due to interactions such as permanent dipoles, permanent quadrupoles, dispersion forces, charge transfer forces, and hydrogen bonds.

A preferred form of the adsorptive group includes a form capable of binding to the adsorbent through hydrogen bonding. In this case, the adsorptive group may play the role of either a proton donor or an acceptor that mediates hydrogen bonding, or may play both roles.

The adsorptive group is preferably a group containing a polar element having an atomic group in which a carbon atom and a heteroatom are linked (hereinafter, "adsorptive group" is also referred to as "polar group"). As used herein, a polar element refers to an atomic group in which a carbon atom and a heteroatom are directly linked.

The heteroatom is preferably at least one selected from the group consisting of N, O, S, P, B and Si, and at least one selected from the group consisting of N, O and S. is more preferred, at least one selected from the group consisting of N and O is more preferred, and O is particularly preferred.

Further, in the alignment aid, the valence of the polar element is not particularly limited, such as monovalent, divalent, or trivalent, and the number of polar elements in the adsorptive group is also not particularly limited.

The alignment aid preferably has 1 to 8 adsorptive groups, more preferably 1 to 4 adsorptive groups, and still more preferably 1 to 3 adsorptive groups in one molecule.

The adsorbing groups exclude polymerizable groups and orientation-inducing groups, but the structure in which the hydrogen atom in the adsorbing group is replaced with P ^AP1 -Sp ^AP1 - and the hydrogen atom in P ^AP1 -Sp ^AP1 - is -OH. The structure substituted with is included in the adsorptive group.

Adsorptive groups contain one or more polar elements and are broadly divided into cyclic group types and chain group types.

Cyclic radical types are those forms that contain a cyclic radical with a cyclic structure that contains a polar element in its structure, and chain radical types are those that contain a cyclic radical with a cyclic structure that contains a polar element in its structure. It is a form that does not contain

A chain group type is a form having a polar element in a linear or branched chain group, and may have a cyclic structure in which a part thereof does not contain a polar element.

A cyclic group-type adsorptive group means a form having a structure containing at least one polar element in a cyclic atomic arrangement.

In addition, in this specification, a cyclic group is as having mentioned above. Therefore, the cyclic group-type adsorptive group only needs to contain a cyclic group containing a polar element, and the adsorptive group as a whole may be branched or linear.

On the other hand, a chain group-type adsorbing group is a structure that does not contain a cyclic atomic arrangement containing a polar element in the molecule and contains at least one polar element in a linear atomic arrangement (which may be branched). means a form having

In the present specification, the chain group refers to an atomic group in which the constituent atoms are linearly (may be branched) and does not contain a cyclic atomic arrangement in the structural formula. base. In other words, a chain group refers to a straight or branched chain aliphatic group, which may contain either saturated or unsaturated bonds.

Chain groups thus include, for example, alkyl groups, alkenyl groups, alkoxy groups, ester groups, ether groups, ketone groups, and the like. The hydrogen atoms in these groups are substituted with at least one substituent (reactive functional group (vinyl group, acrylic group, methacrylic group, etc.), chain organic group (alkyl group, cyano group, etc.)). good too. Also, the chain group may be linear or branched.

The cyclic group-type adsorptive group is preferably a heteroaromatic group having 3 to 20 carbon atoms (including condensed rings) or a heteroalicyclic group having 3 to 20 carbon atoms (including condensed rings). Preferably, a heteroaromatic group having 3 to 12 carbon atoms (including condensed rings) or a heteroalicyclic group having 3 to 12 carbon atoms (including condensed rings) is more preferred, and a 5-membered heterocyclic It is more preferably an aromatic group, a 5-membered heteroalicyclic group, a 6-membered heteroaromatic group or a 6-membered heteroalicyclic group. A hydrogen atom in these ring structures may be substituted with a halogeno group, a linear or branched alkyl group having 1 to 5 carbon atoms, or an alkyloxy group.

The chain group-type adsorptive group is preferably a linear or branched alkyl group having 1 to 20 carbon atoms in which a hydrogen atom or —CH ₂ — in the structure is substituted with a polar element. One or two or more non-adjacent -CH ₂ - in the alkyl group are substituted with -CH=CH-, -C≡C-, -O-, -CO-, -COO- or -OCO- may be Adsorbing groups of the chain type preferably also contain one or more polar elements at their ends.

A hydrogen atom in the adsorptive group may be substituted with a polymerizable group.

Specific examples of the polar element include 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), and a polar element containing a phosphorus atom (hereinafter referred to as a phosphorus-containing polar element). element), a polar element containing a boron atom (hereinafter referred to as a boron-containing polar element), a polar element containing a silicon atom (hereinafter referred to as a silicon-containing polar element) or a polar element containing a sulfur atom (hereinafter referred to as a sulfur-containing polar element). . From the viewpoint of adsorption capacity, the polar element is preferably a nitrogen-containing polar element or an oxygen-containing polar element, more preferably an oxygen-containing polar element.

The oxygen-containing polar element includes at least one group selected from the group consisting of a hydroxyl group, an alkylol group, an alkoxy group, a formyl group, a carboxyl group, an ether group, a carbonyl group, a carbonate group and an ester group, or the group is a carbon It is preferably an atom-linked group.

The nitrogen-containing polar element includes at least one group selected from the group consisting of a cyano group, a primary amino group, a secondary amino group, a tertiary amino group, a pyridyl group, a carbamoyl group and a ureido group; It is preferably an atom-linked group.

Therefore, as the adsorptive group, a cyclic group having an oxygen-containing polar element (hereinafter referred to as an oxygen-containing cyclic group), a cyclic group having a nitrogen-containing polar element (hereinafter referred to as a nitrogen-containing cyclic group), an oxygen-containing polar one or two or more selected from the group consisting of a chain group having a polar element (hereinafter referred to as an oxygen-containing chain group) and a chain group having a nitrogen-containing polar element (hereinafter referred to as a nitrogen-containing chain group) It is preferred to include the group itself or the group.

The oxygen-containing cyclic group preferably includes any one of the following groups having an oxygen atom as an ether group in the ring structure.

Further, the oxygen-containing cyclic group preferably includes any one of the following groups having an oxygen atom as a carbonyl group, a carbonate group and an ester group in the ring structure.

The nitrogen-containing cyclic group preferably contains any one of the following groups.

The oxygen-containing chain group preferably contains any one of the following groups.

In the formula, R ^at1 represents an alkyl group having 1 to 5 carbon atoms.

Z ^at1 represents a single bond, a linear or branched alkylene group having 1 to 15 carbon atoms, or a linear or branched alkenylene group having 2 to 18 carbon atoms. However, —CH ₂ — in an alkylene group or alkenylene group may be substituted with —O—, —COO—, —C(═O)—, or —OCO— so that an oxygen atom is not directly adjacent.

X ^at1 represents a hydrogen atom or an alkyl group having 1 to 15 carbon atoms. However, -CH ₂ - in the alkyl group may be substituted with -O-, -COO-, -C(=O)-, or -OCO- so that the oxygen atom is not directly adjacent.

The nitrogen-containing chain group preferably contains any one of the following groups.

In the formula, R ^at , R ^bt , R ^ct and R ^dt each independently represent a hydrogen atom or an alkyl group having 1 to 5 carbon atoms.

The adsorptive group is preferably a group represented by the following general formula (AT).

In the formula, Sp ^AT1 represents a single bond or a linear or branched alkylene group having 1 to 25 carbon atoms. However, a hydrogen atom in the alkylene group may be substituted with —OH, —CN, —W ^AT1 —Z ^AT1 or P ^AP1 —Sp ^AP1 —, and —CH ₂ — in the alkylene group is directly It may be substituted with a cyclic group, -O-, -COO-, -C(=O)-, -OCO-, -CH=CH- so as not to bond.

^WAT1 represents a single bond or the following general formula (WAT1) or (WAT2).

Z ^AT1 represents a monovalent group containing a polar element. However, a hydrogen atom in Z ^AT1 may be replaced with —OH, —CN or P ^AP1 —Sp ^AP1 —.

(Wherein, Sp ^WAT1 and Sp ^WAT2 each independently represent a single bond, a linear or branched alkylene group having 1 to 25 carbon atoms, and the hydrogen atoms in the alkylene group are —OH, — It may be substituted with CN or P ^AP1 -Sp ^AP1 -, and -CH ₂ - in the alkylene group is a cyclic group, -O-, -COO-, -C (=O )-, -OCO- or -CH=CH- may be substituted.)

Sp ^AT1 , Sp ^WAT1 and Sp ^WAT2 each independently preferably represents a single bond or a linear or branched alkylene group having 1 to 20 carbon atoms, and a single bond or a linear number of carbon atoms It more preferably represents an alkylene group of 1 to 20, and more preferably represents a single-bonded or linear alkylene group of 2 to 10 carbon atoms.

In Sp ^AT1 , Sp ^WAT1 and Sp ^WAT2 , one or two or more —CH ₂ — in the alkylene group are each independently —CH═CH—, —, so that oxygen atoms are not directly adjacent to each other. It may be substituted with C≡C-, -O-, -CO-, -COO- or -OCO-.

In addition, hydrogen atoms in Sp ^AT1 and Sp ^WAT1 may each independently be replaced with -W ^AT1 -Z ^AT1 or P ^AP1 -Sp ^AP1 -.

Z ^AT1 represents a monovalent group containing a polar element, and is preferably a group represented by the following general formula (ZAT1-1) or (ZAT1-2).

In the formula, Sp ^ZAT11 and Sp ^ZAT12 each independently represent a single bond or a linear or branched alkylene group having 1 to 25 carbon atoms. However, the hydrogen atom in the alkylene group may be substituted with —OH, —CN, —Z ^ZAT11 —R ^ZAT11 or P ^AP1 —Sp ^AP1 —, and —CH ₂ — in the alkylene group is directly attached to the oxygen atom. It may be substituted with non-adjacent cyclic groups -O-, -COO-, -C(=O)-, -OCO- or -CH=CH-.

^ZZAT11 represents a group containing a polar element.

A structure represented by a ring containing Z ^ZAT12 in general formula (ZAT1-2) represents a 5- to 7-membered ring.

A hydrogen atom in Z 2 ^ZAT11 and Z ^{2 ZAT12} may be replaced with —OH, —CN or P ^AP1 —Sp ^AP1 —.

R ^ZAT11 and R ^ZAT12 each independently represent a hydrogen atom or a linear or branched alkyl group having 1 to 8 carbon atoms. However, a hydrogen atom in the alkyl group may be substituted with —OH, —CN or P ^AP1 —Sp ^AP1 —, and —CH ₂ — in the alkyl group is a cyclic group such that an oxygen atom is not directly adjacent. , -O-, -COO-, -C(=O)-, -OCO-, -CH=CH- or -Z ^ZAT11 -.

As the group represented by the general formula (ZAT1-1), groups represented by the following general formulas (ZAT1-1-1) to (ZAT1-1-30) are preferable.

In the formula, a hydrogen atom bonded to a carbon atom may be replaced with -OH, -CN or P ^AP1 -Sp ^AP1 -.

Sp ^ZAT11 represents a single bond or a linear or branched alkylene group having 1 to 25 carbon atoms. However, the hydrogen atom in the alkylene group may be substituted with —OH, —CN, —Z ^ZAT11 —R ^ZAT11 or P ^AP1 —Sp ^AP1 —, and —CH ₂ — in the alkylene group is directly attached to the oxygen atom. It may be substituted with non-adjacent cyclic groups -O-, -COO-, -C(=O)-, -OCO- or -CH=CH-.

R ^ZAT11 represents a hydrogen atom or a linear or branched alkyl group having 1 to 8 carbon atoms. However, a hydrogen atom in the alkyl group may be substituted with —OH, —CN, —Sp ^AT1 —W ^AT1 —Z ^AT1 or P ^AP1 —Sp ^AP1 —, and —CH ₂ — in the alkyl group may be substituted with oxygen The atoms may be substituted with a cyclic group, -O-, -COO-, -C(=O)-, -OCO-, -CH=CH- or -Z ^ZAT11 - so that the atoms are not directly adjacent.

As the group represented by the general formula (ZAT1-2), groups represented by the following general formulas (ZAT1-2-1) to (ZAT1-2-9) are preferable.

In the formula, a hydrogen atom bonded to a carbon atom may be substituted with a halogen atom, -OH, -CN or P ^AP1 -Sp ^AP1 -.

Sp ^ZAT11 represents a single bond or a linear or branched alkylene group having 1 to 25 carbon atoms. However, a hydrogen atom in the alkylene group may be substituted with —OH, —CN or P ^AP1 —Sp ^AP1 —, and —CH ₂ — in the alkylene group is a cyclic group such that an oxygen atom is not directly adjacent. , -O-, -COO-, -C(=O)-, -OCO-, -CH=CH- or -Z ^ZAT11 -.

The groups represented by the general formula (ZAT1-1) include the following groups.

In the formula, R ^tc represents a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, or P ^AP1 -Sp ^AP1 -. However, a hydrogen atom in the alkyl group may be substituted with —OH, —CN or P ^AP1 —Sp ^AP1 —, and —CH ₂ — in the alkyl group is a cyclic group such that an oxygen atom is not directly adjacent. , -O-, -COO-, -C(=O)-, -OCO-, -CH=CH- or -Z ^ZAT11 -.

A hydrogen atom in the molecule may be replaced with P ^AP1 -Sp ^AP1 -.

* represents a bond.

Among the preferred groups for Z ^AT1 , storage stability can be ensured by being stably mixed in the liquid crystal composition, and a good orientation control force derived from a moderately high adsorption force to the adsorbent is exhibited. , OH containing groups are particularly preferred. Further, as a mesogenic group, a combination with (AL-1) is particularly preferred.

The orientation aid preferably has a form in which the polar elements contained in the adsorptive groups and the polar elements contained in the polymerizable groups are localized. The adsorptive group is an important structure for vertically aligning the liquid crystal molecules, and the adjoining adsorptive group and the polymerizable group provide better alignment, and the liquid crystal composition also has a favorable structure. It is soluble.

Specifically, the alignment aid preferably has a form having a polymerizable group and an adsorptive group on the same ring of the mesogenic group. Such forms include a form in which one or more polymerizable groups and one or more adsorptive groups are respectively bonded on the same ring, and a form in which at least one polymerizable group or one or more adsorptive groups of one or more polymerizable groups and at least one of which is bound to the other and has a polymerizable group and an adsorptive group on the same ring.

In this case, a hydrogen atom in the spacer group that binds to the polymerizable group may be substituted with an adsorptive group, and a hydrogen atom in the adsorptive group may be substituted with the polymerizable group via the spacer group. good too.

The alignment aid (spontaneous alignment compound) is preferably a compound represented by the following general formula (SAL).

In the formula, a hydrogen atom bonded to a carbon atom is a linear or branched alkyl group having 1 to 25 carbon atoms, —OH, —CN, —Sp ^AT1 —W ^AT1 —Z ^AT1 or P ^AP1 —Sp ^AP1 - may be substituted. However, a hydrogen atom in the alkyl group may be substituted with —OH, —CN, —Sp ^AT1 —W ^AT1 —Z ^AT1 or P ^AP1 —Sp ^AP1 —, and —CH ₂ — in the alkyl group may be substituted with oxygen It may be substituted with a cyclic group, -O-, -COO-, -C(=O)-, -OCO- or -CH=CH- so that the atoms are not directly bonded.

R ^AK1 has the same meaning as R ^AK1 in general formula (AK).

A ^AL1 and A ^AL2 each independently represent the same meaning as A ^AL1 and A ^AL2 in general formula (AL).

Z ^AL1 has the same meaning as Z ^AL1 in general formula (AL).

m ^AL1 has the same meaning as m ^AL1 in general formula (AL).

Sp ^AT1 has the same meaning as Sp ^AT1 in general formula (AT).

W ^AT1 has the same meaning as W ^AT1 in general formula (AT).

Z ^AT1 has the same meaning as Z ^AT1 in general formula (AT).

Compounds represented by the general formula (SAL) are preferably compounds represented by the following formulas (SAL-1.1) to (SAL-2.9).

The amount of alignment aid contained in the liquid crystal composition is preferably about 0.01 to 10 mass %. More preferable lower limits thereof are 0.05% by mass and 0.1% by mass from the viewpoint of more preferably aligning the liquid crystal molecules. On the other hand, the more preferable upper limits are 7% by mass, 5% by mass, 4% by mass, 3% by mass and 1% by mass from the viewpoint of improving response characteristics. By employing the configuration of the present invention, a sufficient amount of alignment aid can be dissolved in the liquid crystal composition.

The total content of the alignment aid is preferably 0.05 to 10% by mass, more preferably 0.1 to 8% by mass, with respect to the composition containing the alignment aid of the present application. is preferably contained 0.1 to 5% by mass, preferably 0.1 to 3% by mass, preferably 0.2 to 2% by mass, preferably 0.2 to 1 The content is preferably 0.3% by mass, preferably 0.2 to 1% by mass, and preferably 0.2 to 0.56% by mass.

A preferable lower limit of the total content of the alignment aid is 0.01% by mass and 0.03% by mass with respect to the composition containing the compound represented by the general formula (P) of the present application. , 0.05% by weight, 0.08% by weight, 0.1% by weight, 0.15% by weight, 0.2% by weight, 0.25% by weight, 0 .3 mass %.

Preferred upper limits for the total content of the alignment aid are 10% by mass, 8% by mass, and 5% by mass with respect to the composition containing the compound represented by the general formula (P) of the present application. , 3% by mass, 1.5% by mass, 1.2% by mass, 1% by mass, 0.8% by mass, and 0.5% by mass.

If the content is too small, the effect of adding the alignment aid is difficult to appear, and problems such as weakening the spontaneous orientation of the liquid crystal composition occur. . Therefore, the content is set in consideration of these balances.

(polymerizable compound)
The liquid crystal composition of the present invention may further contain a polymerizable compound that can be polymerized by irradiation with active energy rays. As the polymerizable compound, it is preferable to contain a polymerizable compound represented by the following general formula (P). Such a polymerizable compound has a function of imparting a predetermined pretilt angle to liquid crystal molecules. The liquid crystal composition can also contain two or more of these polymerizable compounds.

In formula (P), R ^p1 represents a hydrogen atom, a fluorine atom, a cyano group, an alkyl group having 1 to 15 carbon atoms, or -Sp ^p2 -P ^p2 . provided that one or two or more non-adjacent —CH ₂ — present in an alkyl group are each independently —CH═CH—, —C≡C—, —O—, —CO—, —COO - or -OCO- may be substituted. Also, one or more hydrogen atoms present in the alkyl group may each independently be substituted with a cyano group, a fluorine atom or a chlorine atom.

P ^p1 and P ^p2 each independently represent any one of the following general formulas (P ^p1 -1) to (P ^p1 -9).

(Wherein, 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, W ^p11 is a single bond, -O-, -COO-, -OCO- or -CH ₂ -, t ^p11 represents 0, 1 or 2, and R ^p11 , R ^p12 , W ^p11 and/or t ^p11 are present in the molecule If there are more than one, they may be the same or different.)

Sp ^p1 and Sp ^p2 each independently represent a single bond or a spacer group.

Z ^p1 and Z ^p2 are each independently 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 ) ₂ -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- (wherein R ^ZP1 each independently represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, but when multiple R ^ZP1 are present in the molecule, they may be the same or different).

A ^p1 , A ^p2 and A ^p3 are each independently
(a ^p ) 1,4-cyclohexylene group (one —CH ₂ — or two or more non-adjacent —CH ₂ — present in this group may be substituted with —O—; )
(b ^p ) 1,4-phenylene group (one —CH= or two or more non-adjacent —CH= present in this group may be substituted with —N=) and ( c ^p ) naphthalene-2,6-diyl group, naphthalene-1,4-diyl group, naphthalene-1,5-diyl group, 1,2,3,4-tetrahydronaphthalene-2,6-diyl group, decahydro naphthalene-2,6-diyl group, phenanthrene-2,7-diyl group or anthracene-2,6-diyl group (one -CH= present in these groups or two or more non-adjacent - CH= may be replaced with -N=.)
A group selected from the group consisting of (the group (a ^p ), the group (b ^p ) and the group (c ^p ) is each independently a hydrogen atom present in this group, a halogen atom, a carbon atom number 1 to 8 alkyl groups, alkenyl groups having 1 to 8 carbon atoms, cyano groups or -Sp ^p2 -P ^p2 ).

m ^p1 represents 0, 1, 2 or 3;

When multiple Z ^p1 , A ^p2 , Sp ^p2 and/or P ^p2 are present in the molecule, they may be the same or different. However, A ^p3 may be a single bond when m ^p1 is 0 and A ^p1 is a group represented by a group (c ^p ).

In addition, alignment aids are excluded from the polymerizable compounds.

R ^p1 is preferably -Sp ^p2 -P ^p2 .

P ^p1 and P ^p2 are each independently preferably any one of general formulas (P ^p1 -1) to (P ^p1 -3), more preferably (P ^p1 -1).

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

Preferably, t ^p11 is 0 or 1.

W ^p11 is preferably a single bond, —CH ₂ — or —C ₂ H ₄ —.

m ^p1 is preferably 0, 1 or 2, preferably 0 or 1.

Z ^p1 and Z ^p2 are each independently 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-, 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≡ It is more preferably C-.

Only one of Z ^p1 and Z ^p2 present 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-, and other are all single bonds, and only one of Z ^p1 and Z ^p2 present in the molecule is —OCH ₂ —, —CH ₂ O—, —C ₂ H ₄ —, —COO— or —OCO - and all others are single bonds, and more preferably all of Z ^p1 and Z ^p2 present in the molecule are single bonds.

In addition, only one of Z ^p1 and Z ^p2 present in the molecule is —CH═CH—COO—, —COO—CH═CH—, —(CH ₂ ) ₂ —COO—, —(CH ₂ ) ₂ It is a linking group selected from the group consisting of -OCO-, -O-CO-(CH ₂ ) ₂ -, and -COO-(CH ₂ ) ₂ -, and all others are preferably single bonds.

Sp ^p1 and Sp ^p2 each independently represent a single bond or a spacer group, and the spacer group is preferably an alkylene group having 1 to 30 carbon atoms. provided that —CH ₂ — in the alkylene group is substituted with —O—, —CO—, —COO—, —OCO—, —CH═CH— or —C≡C—, as long as the oxygen atoms are not directly connected to each other and a hydrogen atom in the alkylene group may be substituted with a halogen atom.

Among them, Sp ^p1 and Sp ^p2 are each independently preferably a linear alkylene group having 1 to 10 carbon atoms or a single bond.

A ^p1 , A ^p2 and A ^p3 are each independently preferably a 1,4-phenylene group or a 1,4-cyclohexylene group, more preferably a 1,4-phenylene group.

The 1,4-phenylene group is preferably substituted with one fluorine atom, one methyl group or one methoxy group in order to improve compatibility with liquid crystal molecules (liquid crystal compounds).

In addition, in the combination of each structural part described above, each compound mentioned as the alignment aid is not included.

The amount of the polymerizable compound contained in the liquid crystal composition is preferably 0.05 to 10% by mass, more preferably 0.1 to 8% by mass, and 0.1 to 5% by mass. is more preferably 0.1 to 3% by mass, more preferably 0.2 to 2% by mass, even more preferably 0.2 to 1.3% by mass, and 0 0.2 to 1% by weight is particularly preferred, and 0.2 to 0.56% by weight is most preferred.

Preferred lower limits thereof are 0.01% by mass, 0.03% by mass, 0.05% by mass, 0.08% by mass, 0.1% by mass, and 0.15% by mass. %, 0.2% by mass, 0.25% by mass, and 0.3% by mass. On the other hand, the preferred upper limits are 10% by mass, 8% by mass, 5% by mass, 3% by mass, 1.5% by mass, 1.2% by mass, and 1% by mass. %, 0.8% by mass, and 0.5% by mass.

If the amount of the polymerizable compound is small, the effect of adding the polymerizable compound to the liquid crystal composition is difficult to appear. problems may occur. On the other hand, if the amount of the polymerizable compound is too large, for example, depending on the illuminance of ultraviolet rays, etc., the amount of the polymerizable compound remaining after curing increases, curing takes a long time, and the reliability of the liquid crystal composition decreases. Problems can arise. Therefore, it is preferable to set the amount of the polymerizable compound in consideration of these balances.

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

In the formulas, P ^p11 , P ^p12 , Sp ^p11 and Sp ^p12 have the same meanings as P ^p1 , P ^p2 , Sp ^p1 and Sp ^p2 in general formula (P).

Preferred examples of the polymerizable compound represented by general formula (P) also include polymerizable compounds represented by formulas (P-2-1) to (P-2-12) below.

In the formulas, P ^p21 , P ^p22 , Sp ^p21 and Sp ^p22 have the same meanings as P ^p1 , P ^p2 , Sp ^p1 and Sp ^p2 in general formula (P).

Furthermore, preferable examples of the polymerizable compound represented by the general formula (P) also include polymerizable compounds represented by the following formulas (P-3-1) to (P-3-15).

In the formulas, P ^p31 , P ^p32 , Sp ^p31 and Sp ^p32 have the same meanings as P ^p1 , P ^p2 , Sp ^p1 and Sp ^p2 in general formula (P).

Preferred examples of the polymerizable compound represented by general formula (P) also include polymerizable compounds represented by formulas (P-4-1) to (P-4-19) below.

In the formulas, P ^p41 , P ^p42 , Sp ^p41 and Sp ^p42 have the same meanings as P ^p1 , P ^p2 , Sp ^p1 and Sp ^p2 in general formula (P).

When a polymerizable monomer is added, polymerization proceeds even in the absence of a polymerization initiator, but a polymerization initiator may be contained to promote polymerization. Examples of polymerization initiators include benzoin ethers, benzophenones, acetophenones, benzyl ketals, acylphosphine oxides and the like. Moreover, a stabilizer may be added in order to improve the storage stability. Examples of stabilizers that can be used include hydroquinones, hydroquinone monoalkyl ethers, tert-butyl catechols, pyrogallols, thiophenols, nitro compounds, β-naphthylamines, β-naphthols, nitroso compounds, and the like. be done.

The composition of the present invention may further contain one or more compounds (Q) as additives for improving reliability. Compound (Q) preferably has the following structure.

(In the formula, R ^Q represents a hydroxyl group, a hydrogen atom, a straight-chain alkyl group or a branched-chain alkyl group having 1 to 22 carbon atoms, and one or more _CH2 groups in the alkyl group are oxygen atoms. may be substituted with -O-, -CH=CH-, -CO-, -OCO-, -COO-, -C≡C-, -CF ₂ O-, -OCF ₂ - so that is not directly adjacent to , and connect to other structures with *.)
R ^Q represents a straight-chain or branched-chain alkyl group having 1 to 22 carbon atoms, and one or more CH ₂ groups in the alkyl group are —O may be substituted with -, -CH=CH-, -CO-, -OCO-, -COO-, -C≡C-, -CF ₂ O-, -OCF ₂ -, and A straight-chain alkyl group, a straight-chain alkoxy group, a straight-chain alkyl group in which one _CH2 group is substituted with -OCO- or -COO-, a branched-chain alkyl group, a branched alkoxy group, one _CH2 group is -OCO- Or a branched alkyl group substituted with -COO- is preferred, a linear alkyl group having 1 to 20 carbon atoms, a linear alkyl group in which one CH ₂ group is substituted with -OCO- or -COO-, branched Chain alkyl groups, branched alkoxy groups, and branched chain alkyl groups in which one CH ₂ group is replaced by -OCO- or -COO- are more preferred. M ^Q represents a trans-1,4-cyclohexylene group, a 1,4-phenylene group or a single bond, preferably a trans-1,4-cyclohexylene group or a 1,4-phenylene group.

More specifically, compounds (Q) are preferably compounds represented by general formulas (Qa) to (Qd) below.

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

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 from 0.001 to It is preferably 1% by mass, more preferably 0.001 to 0.1% by mass, particularly preferably 0.001 to 0.05% by mass.

More specifically, compounds represented by the following (Q-1) to (Q-44) are preferred as antioxidants or light stabilizers that can be used in the present invention.

(In the formula, n represents an integer from 0 to 20.)
The liquid crystal composition of this embodiment is applied to a liquid crystal display element. An example of the liquid crystal display device according to the present embodiment will be described below 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 , each component is shown separated for convenience of explanation. As shown in FIG. 1, the liquid crystal display element 1 according to the present embodiment includes a first substrate 2 and a second substrate 3 arranged to face each other, and a substrate 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 described above.

A pixel electrode layer 5 is formed on the surface of the first substrate 2 facing the liquid crystal layer 4 . 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 sandwiched between 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 according to one embodiment includes 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, and a color filter. 9, the second substrate 3, and the second polarizing plate 8 are laminated in this order.

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

The first polarizing plate 7 and the second polarizing plate 8 can be adjusted so that the viewing angle and contrast are improved by adjusting the polarization axis of each polarizing plate, and their transmission axes operate in normally black mode. It is preferable to have the transmission axes orthogonal to each other so that In particular, either the first polarizing plate 7 or the second polarizing plate 8 is preferably arranged 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) in a portion corresponding to the thin film transistor.

The black matrix may be placed together with the color filter on the substrate opposite to the array substrate, or may be placed together with the color filter on the side of the array substrate, with the black matrix on the array substrate and the color filter on the other substrate. It may be installed separately. Also, the black matrix may be installed separately from the color filters, but may be one that reduces the transmittance by overlapping the colors of the color filters.

FIG. 2 is an enlarged plan view of a region surrounded by line I, which is part of the pixel electrode layer 5 formed on the first substrate 2 in FIG. As shown in FIG. 2, in the pixel electrode layer 5 including thin film transistors formed on the surface of the first substrate 2, a plurality of gate bus lines 11 for supplying scanning signals and a plurality of gate bus lines 11 for supplying display signals are provided. Data bus lines 12 are arranged in a matrix crossing each other. 2 only shows a pair of gate bus lines 11, 11 and a pair of data bus lines 12, 12. FIG.

A region surrounded by a plurality of gate bus lines 11 and a plurality of data bus lines 12 forms a unit pixel of a liquid crystal display element, and a pixel electrode 13 is formed in the unit pixel. The pixel electrode 13 has a so-called fishbone structure including two cross-shaped trunks orthogonal to each other and a plurality of branches extending from each trunk. A Cs electrode 14 is provided between the pair of gate bus lines 11 and 11 substantially parallel to the gate bus line 11 . A thin film transistor including a source electrode 15 and a drain electrode 16 is provided in the vicinity of an intersection where the gate bus line 11 and the data bus line 12 intersect each other. A contact hole 17 is provided in the drain electrode 16 .

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

The pixel electrode 13 is preferably a transparent electrode in order to improve transmittance. 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. Also, in order to reduce electrical resistance, the transparent electrode can be formed as a polycrystalline ITO film by firing an amorphous ITO film.

In the liquid crystal display element of this embodiment, for example, wiring is formed by sputtering a metal material such as Al or an alloy thereof on the first substrate 2 and the second substrate 3, and the pixel electrode layer 5 and the common electrode layer 6 are formed. can be formed respectively. Moreover, the color filter 9 can be produced by, for example, a pigment dispersion method, a printing method, an electrodeposition method, a dyeing method, or the like. A method for producing a color filter by a pigment dispersion method will be explained as an example. A curable coloring composition for a color filter is applied onto the transparent substrate, patterned, and cured by heating or light irradiation. By performing this process for each of the three colors of red, green, and blue, pixel portions for color filters can be produced. Also, the color filter 9 may be placed on the side of the substrate having TFTs and the like.

The first substrate 2 and the second substrate 3 are opposed to each other so that the pixel electrode layer 5 and the common electrode layer 6 are on the inside. may be adjusted. At this time, it is preferable to adjust the thickness of the liquid crystal layer 4 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 as to maximize the contrast. Moreover, when there are two polarizing plates 7 and 8, the polarizing axis of each polarizing plate can be adjusted to improve the viewing angle and contrast. Furthermore, a retardation film for widening the viewing angle can also be used. After that, a sealing agent such as an epoxy-based thermosetting composition is screen-printed on the substrates with a liquid crystal injection port provided, and the substrates are bonded together and heated to thermally cure the sealing agent.

As a method for sandwiching the composition between the two substrates 2 and 3, a normal vacuum injection method or a one drop fill (ODF) method or the like can be used. Although it does not occur, there is a problem that traces of injection remain, but in this embodiment, it can be more preferably used for display elements manufactured using the ODF method. In the process of manufacturing a liquid crystal display element by the ODF method, a sealant such as an epoxy-based light and heat curing agent is drawn on either the back plane or the front plane substrate using a dispenser in the form of a closed loop bank, and the liquid crystal is removed in it. A liquid crystal display element can be manufactured by bonding a front plane and a back plane after dropping a predetermined amount of the composition under air. In this embodiment, in the ODF method, it is possible to suppress the occurrence of drip marks when the liquid crystal composition is dripped onto the substrate. Note that the drop mark is defined as a phenomenon in which a drop mark of the liquid crystal composition appears white when a black display is performed.

In addition, in the process of manufacturing a liquid crystal display element by the ODF method, it is necessary to drop an optimum liquid crystal injection amount according to the size of the liquid crystal display element. The liquid crystal can be stably dropped over a long period of time without being affected by abrupt pressure changes and shocks in the dropping device, so that a high yield of liquid crystal display elements can be maintained. In particular, it is difficult to control the deviation from the optimum value within a certain range in the small liquid crystal display element, which is frequently used in smartphones, which has become popular recently, because the optimum liquid crystal injection amount is small. By using the composition, it is possible to realize a stable discharge amount of the liquid crystal material even in a small liquid crystal display device.

When the liquid crystal composition of the present embodiment contains a polymerizable compound, the method for polymerizing the polymerizable compound is preferably an appropriate polymerization rate in order to obtain good alignment performance of the liquid crystal. A method of polymerizing by irradiating single, combined or sequential activation energy rays such as the above is preferred. When using ultraviolet light, a polarized light source may be used, or a non-polarized light source may be used. Further, when the polymerizable compound-containing composition is sandwiched between two substrates and the polymerization is carried out, at least the substrate on the side of the irradiated surface must be given appropriate transparency to the active energy ray. not. In addition, after polymerizing only a specific portion using a mask during light irradiation, the orientation state of the unpolymerized portion is changed by changing the conditions such as the electric field, magnetic field, or temperature, and then the active energy ray is further irradiated. It is also possible to use a means of polymerizing by In particular, when the composition containing the polymerizable compound is exposed to ultraviolet light, it is preferable to apply the ultraviolet light while applying an AC electric field to the composition containing the polymerizable compound. The alternating electric field to be applied is preferably an alternating current with a frequency of 10 Hz to 10 kHz, more preferably 60 Hz to 10 kHz, and 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 lateral electric field type MVA mode liquid crystal display device, it is preferable to control the pretilt angle to 80 degrees to 89.9 degrees from the viewpoint of alignment stability and contrast.

The temperature at the time of irradiation is preferably within a temperature range in which the liquid crystal state of the composition of the present embodiment is maintained. It is preferred to polymerize at a temperature close to room temperature, ie typically between 15 and 35°C. A metal halide lamp, a high-pressure mercury lamp, an ultrahigh-pressure mercury lamp, or the like can be used as a lamp for generating ultraviolet rays. As for the wavelength of the ultraviolet rays to be irradiated, it is preferable to irradiate ultraviolet rays in a wavelength range that is not in the absorption wavelength range of the composition, and if necessary, it is preferable to cut the ultraviolet rays. The intensity of the ultraviolet rays to be irradiated is preferably 0.1 mW/cm ² to 100 W/cm ² , more preferably 2 mW/cm ² to 50 W/cm ² . The energy amount of the ultraviolet rays to be irradiated can be appropriately adjusted, but is preferably 10 mJ/cm ² to 500 J/cm ² , more preferably 100 mJ/cm ² to 200 J/cm ² . When irradiating with ultraviolet rays, the intensity may be changed. The irradiation time of the ultraviolet rays is appropriately selected according to the intensity of the ultraviolet rays to be irradiated, but is preferably 10 seconds to 3600 seconds, more preferably 10 seconds to 600 seconds.

When a polymerizable compound is used, the resulting liquid crystal display element 1 includes two substrates 2 and 3, and a liquid crystal layer containing a polymer of a liquid crystal composition and a polymerizable compound provided between the two substrates 2 and 3. 4. In this case, it is considered that the polymer of the polymerizable compound is unevenly distributed on the substrates 2 and 3 side in the liquid crystal layer 4 .

The liquid crystal display element 1 may be an active matrix driving liquid crystal display element. 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, preferably a PSA type liquid crystal display element.

Since the liquid crystal composition containing the spontaneous alignment compound is used in the liquid crystal display element of the present embodiment, an alignment film such as a polyimide alignment film is provided on the liquid crystal layer 4 side of the first substrate 2 and the second substrate 3. does not need to be provided. That is, the liquid crystal display element of this embodiment can have a structure in which at least one of the two substrates does not have an alignment film such as a polyimide alignment film.

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

The properties measured in the examples are as follows. Measurements were made according to the method specified in JEITA ED-2521B unless otherwise specified.

T _ni : nematic phase-isotropic liquid phase transition temperature (°C)
Δn: Refractive index anisotropy at 293K Δε: Dielectric anisotropy at _293K γ1: Rotational viscosity at 293K (mPa s)
K ₁₁ : elastic constant of broadening (pN) at 293K
K ₃₃ : Elastic constant of bending at 293K (pN)
Contact angle: Contact angle at 298K (degrees)
Surface energy: energy of substrate surface at 298K (mN/m)
In addition, the following abbreviations are used for the description of the compounds in the examples.
<Ring structure>

<Side chain structure>

(However, n in the table is a natural number.)
<Connection structure>

（ただし、表中のｎは自然数である。）

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

[Vertical alignment evaluation]
The degree of orientation was determined by dropping a predetermined amount of a liquid crystal composition containing an orientation-imparting compound onto an ITO electrode substrate, and placing the opposite substrate coated with an organic insulating film (Optomer SS (acrylic resin) manufactured by JSR) under vacuum. After bonding and curing the seal (only the seal part is irradiated with UV and annealed at 120 degrees for 1 hour), the liquid crystal alignment is set under cross Nicol conditions. ), the results were evaluated according to the following three-level criteria.

x: Almost the entire surface of the cell surface is not blackened.
Δ: Only the vicinity where the liquid crystal was dropped is black.
◯: Almost the entire surface of the cell surface is displayed in black.

[Evaluation of compatibility]
First, a liquid crystal composition containing an alignment imparting compound was filtered through a filter having a pore size of 0.1 μm. Next, 1.0 g of the liquid crystal composition was weighed into a test tube thoroughly washed to remove particles, and vacuum degassed for 15 minutes using a vacuum pump and a bell jar. The tube was then purged with nitrogen and capped. The capped test tube was stored in a constant temperature bath at -20°C, and after a predetermined period of time, the presence of precipitate was evaluated.

×: Precipitates occur within 5 days △: Precipitates do not occur on the 5th day, but precipitates occur between the 6th and 10th days
○: No precipitate occurs even after 10 days

<Examples 1 and 2, Comparative Examples 1 and 2>
Liquid crystal compositions LC-1-1, LC-1-2, and LC-R1 shown in the table below were prepared and their physical properties were measured. Physical properties were as shown in Table 3.

前記の各液晶組成物を１００質量部に対し、下記重合性化合物を表４中の添加量を添加した重合性化合物含有液晶組成を調製し、相溶性及び垂直配向性を確認した。本願発明の重合性液晶組成物はいずれにも優れた特性を有することが確認された。

A polymerizable compound-containing liquid crystal composition was prepared by adding the following polymerizable compound in the amount shown in Table 4 to 100 parts by mass of each liquid crystal composition, and compatibility and vertical alignment properties were confirmed. It was confirmed that the polymerizable liquid crystal composition of the present invention has excellent properties in all cases.

（表中の「％」は質量％を表す。）

("%" in the table represents % by mass.)

<Examples 3-4, Comparative Examples 3-4>
Liquid crystal compositions LC-2-1 and LC-R2 shown in the table below were prepared and their physical properties were measured. Physical properties were as shown in Table 5.

Polymerizable compound-containing liquid crystal compositions were prepared by adding polymerizable compounds RM-1, RM-2, RM-A, and RM-B in the amounts shown in Table 6 to 100 parts by mass of each liquid crystal composition. , compatibility and vertical orientation were confirmed. It was confirmed that the polymerizable liquid crystal composition of the present invention has excellent properties in all cases.

（表中の「％」は質量％を表す。）

("%" in the table represents % by mass.)

<Examples 5-6, Comparative Examples 5-6>
Liquid crystal compositions LC-3-1 and LC-R3 shown in the table below were prepared and their physical properties were measured. Physical properties were as shown in Table 7.

前記の各液晶組成物を１００質量部に対し、重合性化合物ＲＭ－１、ＲＭ－２、ＲＭ－Ａ、ＲＭ－Ｂを表８中の添加量を添加した重合性化合物含有液晶組成を調製し、相溶性及び垂直配向性を確認した。本願発明の重合性液晶組成物はいずれにも優れた特性を有することが確認された。

Polymerizable compound-containing liquid crystal compositions were prepared by adding polymerizable compounds RM-1, RM-2, RM-A, and RM-B in the amounts shown in Table 8 to 100 parts by mass of each liquid crystal composition. , compatibility and vertical orientation were confirmed. It was confirmed that the polymerizable liquid crystal composition of the present invention has excellent properties in all cases.

（表中の「％」は質量％を表す。）

("%" in the table represents % by mass.)

<Examples 7-10, Comparative Examples 7-8>
Liquid crystal compositions of LC-4-1, LC-4-2 and LC-R4 shown in the table below were prepared and their physical properties were measured. Physical properties were as shown in Table 7.

前記の各液晶組成物を１００質量部に対し、重合性化合物ＲＭ－１、ＲＭ－２、ＲＭ－Ａ、ＲＭ－Ｂを表１０中の添加量を添加した重合性化合物含有液晶組成を調製し、相溶性及び垂直配向性を確認した。本願発明の重合性液晶組成物はいずれにも優れた特性を有することが確認された。

Polymerizable compound-containing liquid crystal compositions were prepared by adding polymerizable compounds RM-1, RM-2, RM-A, and RM-B in the amounts shown in Table 10 to 100 parts by mass of each liquid crystal composition. , compatibility and vertical orientation were confirmed. It was confirmed that the polymerizable liquid crystal composition of the present invention has excellent properties in all cases.

（表中の「％」は質量％を表す。）

("%" in the table represents % by mass.)

DESCRIPTION OF SYMBOLS 1... Liquid crystal display element 2... First substrate 3... Second substrate 4... Liquid crystal layer 5... Pixel electrode layer 6... Common electrode layer 7... First polarizing plate 8... Second polarizing plate 9 Color filter 11 Gate bus line 12 Data bus line 13 Pixel electrode 14 Cs electrode 15 Source electrode 16 Drain electrode 17 Contact hole

Claims (13)

general formula (I)

(In the formula,
R ¹ represents an alkenyl group having 2 to 8 carbon atoms,
R ² represents an alkyl group having 1 to 8 carbon atoms, an alkenyl group having 2 to 8 carbon atoms, an alkoxy group having 1 to 8 carbon atoms or an alkenyloxy group having 2 to 8 carbon atoms. )
Contains one or more compounds represented by
The following general formulas (N-1-1), (N-1-2), (N-1-3), (N-1-4), (N-1-5), (N-1-10) and (N-1-11)

(In the formula,
R ^N111 , R ^N121 , R ^N131 , R ^N141 , R ^N151 , R ^N1101 and R ^N1111 each independently represent an alkyl group having 1 to 8 carbon atoms,
One or two or more non-adjacent —CH ₂ — in the alkyl group are each independently —CH═CH—, —C≡C—, —O—, —CO—, —COO—, -OCO-, 1,3-cyclopentylene group, 1,3-cyclobutylene group or 1,2-cyclopropylene group. )
Contains one or more compounds selected from the group consisting of compounds represented by
A liquid crystal composition containing an alignment aid ,
General formulas (N-1-1), (N-1-2), (N-1-3), (N-1-4), (N-1-5), (N-1-10) and/or a liquid crystal composition in which the content of the compound represented by (N-1-11) is 10% by mass or more relative to the total amount of the liquid crystal composition . 2. The liquid crystal composition according to claim 1, wherein the content of the compound represented by formula (I) is 2 to 25% by mass with respect to the total amount of the liquid crystal composition. 3. The liquid crystal composition according to claim 1, wherein the content of the alignment aid with respect to the total amount of the liquid crystal composition is 0.05% by mass or more. Furthermore, the following general formula (II-L)

(In the formula,
R ^L1 and R ^L2 each independently represent an alkyl group having 1 to 8 carbon atoms;
One or two or more non-adjacent -CH ₂ - in the alkyl group are each independently -CH=CH-, -C≡C-, -O-, -CO-, -COO- or -OCO - may be substituted by
n ^L1 represents 0, 1, 2 or 3,
A ^L1 , A ^L2 and A ^L3 are each independently (a) a 1,4-cyclohexylene group (one —CH ₂ — present in this group or two or more non-adjacent —CH ₂ — may be replaced with —O—.) and (b) 1,4-phenylene groups (one —CH= or two or more non-adjacent —CH= present in this group may be —N = may be replaced.)
(c) naphthalene-2,6-diyl group, 1,2,3,4-tetrahydronaphthalene-2,6-diyl group or decahydronaphthalene-2,6-diyl group (naphthalene-2,6-diyl group or One —CH= or two or more non-adjacent —CH= present in the 1,2,3,4-tetrahydronaphthalene-2,6-diyl group may be replaced with —N=. )
represents a group selected from the group consisting of
The above groups (a), (b) and (c) may each independently be substituted with a cyano group, a fluorine atom or a chlorine atom,
Z ^L1 and Z ^L2 are each independently a single bond, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, -OCF ₂ -, -CF ₂ O-, -CH=N-N=CH-, -CH=CH-, -CF=CF- or -C≡C-,
when n ^L1 is 2 or 3 and there are a plurality of A ^L2 , they may be the same or different;
When ^nL1 is 2 or 3 and there are multiple ^ZL2 , they may be the same or different,
Excludes compounds represented by general formula (I). )
4. The liquid crystal composition according to any one of claims 1 to 3 , containing one or more compounds selected from the compounds represented by As the compound represented by the general formula (I), the following formula (I-B6)

5. The liquid crystal composition according to any one of claims 1 to 4 , which contains a compound represented by In addition to the above components, general formula (P)

(In the above general formula (P),
R ^p1 represents a hydrogen atom, a fluorine atom, a cyano group, an alkyl group having 1 to 15 carbon atoms or -Sp ^p2 -P ^p2 ,
One or two or more non-adjacent -CH ₂ - in the alkyl group are each independently -CH=CH-, -C≡C-, -O-, -CO-, -COO- or -OCO - may be substituted by
one or more hydrogen atoms in the alkyl group may be independently substituted with a cyano group, a fluorine atom or a chlorine atom;
P ^p1 and P ^p2 are each independently represented by general formulas (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;
W ^p11 represents a single bond, -O-, -COO- or a methylene group,
t ^p11 represents 0, 1 or 2,
When multiple R ^p11 , R ^p12 , W ^p11 and/or t ^p11 are present in the molecule, they may be the same or different. )
represents either
Sp ^p1 and Sp ^p2 each independently represent a single bond or a spacer group;
Z ^p1 and Z ^p2 are each independently 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- (wherein R ^ZP1 is Each independently represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, but when there are multiple R ^ZP1s in the molecule, they may be the same or different).
A ^p1 , A ^p2 and A ^p3 are each independently
(a ^p ) 1,4-cyclohexylene group (one —CH ₂ — present in this group or two or more non-adjacent —CH ₂ — may be replaced with —O—).
(b ^p ) 1,4-phenylene group (one —CH= or two or more non-adjacent —CH= present in this group may be replaced with —N=) and (c ^p ) naphthalene-2,6-diyl group, 1,2,3,4-tetrahydronaphthalene-2,6-diyl group, decahydronaphthalene-2,6-diyl group, phenanthrene-2,7-diyl group or anthracene -2,6-diyl group (one -CH= or two or more non-adjacent -CH= present in these groups may be replaced with -N=. )
represents a group selected from the group consisting of
In the above group (a ^p ), group (b ^p ) and group (c ^p ), each independently hydrogen atom present in this group is a halogen atom, an alkyl group having 1 to 8 carbon atoms, a carbon optionally substituted with an alkenyl group having 1 to 8 atoms , a cyano group or -Sp ^p2 -P ^p2 ,
m ^p1 represents 0, 1, 2 or 3,
When a plurality of Z ^p1 , A ^p2 , Sp ^p2 and/or P ^p2 are present in the molecule, they may be the same or different,
A ^p3 represents a single bond when m ^p1 is 0 and A ^p1 is a phenanthrene-2,7-diyl group or an anthracene-2,6-diyl group. )
6. The liquid crystal composition according to any one of claims 1 to 5 , containing one or more compounds selected from the compounds represented by 7. The liquid crystal composition according to claim 6, wherein the content of the compound represented by formula (P) is 0.01% by mass or more relative to the total amount of the liquid crystal composition. 8. The alignment aid comprises a compound having, in its molecular structure, a polymerizable group, a mesogenic group, an adsorptive group capable of interacting with a member directly in contact with the liquid crystal layer, and an alignment-inducing group. The liquid crystal composition according to any one of . The above compound having, in its molecular structure, a polymerizable group, a mesogenic group, an adsorptive group capable of interacting with a member in direct contact with the liquid crystal layer, and an orientation-inducing group, has the following general formula (SAL):

(In the formula,
A hydrogen atom bonded to a carbon atom is a linear or branched alkyl group having 1 to 25 carbon atoms, —OH, —CN, —Sp ^AT1 —W ^AT1 —Z ^AT1 or P ^AP1 —Sp ^AP1 —. may be substituted,
a hydrogen atom in the alkyl group may be substituted with —OH, —CN, —Sp ^AT1 —W ^AT1 —Z ^AT1 or P ^AP1 —Sp ^AP1 —;
-CH ₂ - in the alkyl group is substituted with a cyclic group, -O-, -COO-, -C(=O)-, -OCO-, -CH=CH- so that the oxygen atom is not directly bonded; may be
R ^AK1 represents a linear or branched alkyl group having 1 to 20 carbon atoms,
One or two or more —CH ₂ — in the alkyl group are each independently —CH═CH—, —C≡C—, —O—, —CO— without being directly bonded to an oxygen atom. , optionally substituted by -COO- or -OCO-,
one or more hydrogen atoms in the alkyl group may be independently substituted with a halogeno group,
Z ^AL1 is 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 or two or more non-adjacent —CH ₂ — in this alkylene group may be substituted with —O—, —COO— or —OCO—;
A ^AL1 and A ^AL2 each independently represent a divalent cyclic group,
One or more hydrogen atoms in Z ^AL1 , A ^AL1 and A ^AL2 may each independently be substituted with a halogeno group, an adsorptive group, P ^al -Sp ^al - or a monovalent organic group. ,
In addition, when a plurality of Z ^AL1 and A ^AL1 are present in the molecule, they may be the same or different,
m ^AL1 represents an integer from 1 to 5,
Sp ^AT1 represents a single bond, a linear or branched alkylene group having 1 to 25 carbon atoms,
hydrogen atoms in the alkylene group may be substituted with —OH, —CN, —W ^AT1 —Z ^AT1 or P ^AP1 —Sp ^AP1 —;
-CH ₂ - in the alkylene group is substituted with a cyclic group, -O-, -COO-, -C(=O)-, -OCO-, -CH=CH- so that the oxygen atom is not directly bonded; may be
W ^AT1 represents a single bond or general formula (WAT1) or (WAT2);

(In the formula,
Sp ^WAT1 and Sp ^WAT2 each independently represent a single bond, a linear or branched alkylene group having 1 to 25 carbon atoms,
hydrogen atoms in the alkylene group may be substituted with —OH, —CN, —Sp ^AT1 —W ^AT1 —Z ^AT1 or P ^AP1 —S ^AP1 —;
-CH ₂ - in the alkylene group is substituted with a cyclic group, -O-, -COO-, -C(=O)-, -OCO-, -CH=CH- so that the oxygen atom is not directly bonded; may )
Z ^AT1 represents a monovalent group containing a polar element,
hydrogen atoms in Z ^AT1 may be replaced with —OH, —CN, —Sp ^AT1 —W ^AT1 —Z ^AT1 or P ^AP1 —S ^AP1 —;
P ^AP1 -Sp ^AP1 - and P ^al -Sp ^al - represent polymerizable groups. )
9. The liquid crystal composition according to claim 8, which is represented by: A liquid crystal display device using the liquid crystal composition according to any one of claims 1 to 9. A liquid crystal display element for active matrix driving, using the liquid crystal composition according to any one of claims 1 to 9. A VA-type, IPS-type, FFS-type, PSA-type or PSVA-type liquid crystal display device using the liquid crystal composition according to claim 1. 13. The liquid crystal display element according to claim 10, wherein at least one of the substrates does not have an alignment film.

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