JP7151081B2 - liquid crystal display element - Google Patents

Description

The present invention relates to liquid crystal display elements.

Horizontal electric field driving such as an IPS (In-Plane Switching) mode, an FFS (Fringe Field Switching) mode, and the like can be cited as one of driving methods for liquid crystal display elements. In horizontal electric field driving, twist is generated in the liquid crystal molecules by applying an electric field in a parallel direction to the substrates constituting the liquid crystal display element.

Liquid crystal display devices are required to have various properties, and suppression of burn-in is one of the required properties (for example, Patent Document 1). In a lateral electric field driven liquid crystal display element, a twist angle shift is one of the causes of burn-in. That is, when the liquid crystal display element is driven, the liquid crystal molecules that are twisted by the application of an electric field do not return to the initial twist angle when no electric field is applied, and burn-in occurs.

WO2014/203325

According to studies by the inventors of the present invention, it has been found that the twist angle shift occurs more remarkably as the distance between the electrodes in the liquid crystal display element becomes shorter. Specifically, for example, in the IPS mode, the common electrode and the pixel electrode are provided in the same plane on the substrate. Angular shift is likely to occur. Further, in the case of the FFS mode, for example, a plurality of pixel electrodes are provided in the same plane on the substrate, and if the distance between the pixel electrodes is short (less than 20 μm), the twist angle tends to shift.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to suppress the shift of the twist angle in a liquid crystal display element having a short inter-electrode distance.

［式中、Ｒ^１は、水素原子、－Ｏ・、－ＯＨ、又は炭素原子数１～１２のアルキル基を表し、該アルキル基中に存在する１個又は２個以上の－ＣＨ_２－は、それぞれ独立して、－Ｏ－、－Ｓ－、－ＣＨ＝ＣＨ－、－Ｃ≡Ｃ－、－ＣＯ－、－ＣＯ－Ｏ－、－Ｏ－ＣＯ－、－ＯＣＦ_２－、又は－ＣＦ_２Ｏ－に置換されていてもよく、Ｒ^２、Ｒ^３、Ｒ^４及びＲ^５は、それぞれ独立して、炭素原子数１～８のアルキル基を表し、該アルキル基中に存在する１個又は２個以上の－ＣＨ_２－は、それぞれ独立して、－Ｏ－、－Ｓ－、－ＣＨ＝ＣＨ－、－Ｃ≡Ｃ－、－ＣＯ－、－ＣＯ－Ｏ－、－Ｏ－ＣＯ－、－ＯＣＦ_２－、又は－ＣＦ_２Ｏ－に置換されていてもよく、Ｒ^２及びＲ^３は互いに結合して環を形成していてもよく、Ｒ^４及びＲ^５は互いに結合して環を形成していてもよく、Ｒ^６及びＲ^７は、それぞれ独立して、水素原子又は炭素原子数１～６のアルキル基を表し、該アルキル基中に存在する１個又は２個以上の－ＣＨ_２－は、それぞれ独立して、－Ｏ－、－Ｓ－、－ＣＨ＝ＣＨ－、－Ｃ≡Ｃ－、－ＣＯ－、－ＣＯ－Ｏ－、－Ｏ－ＣＯ－、－ＯＣＦ_２、－又は－ＣＦ_２Ｏ－に置換されていてもよく、Ｒ^８は、水素原子又は１価の有機基を表し、該１価の有機基はＭ^１に結合して環を形成してもよく、Ｍ^１は、ｎ価の有機基を表し、ｍは、０～２の整数を表し、ｎは、１～６の整数を表し、ｎが２～６の整数である場合、複数存在するＲ^１～Ｒ^７は、それぞれ互いに同一であっても異なっていてもよい。］
［３］ 液晶層中のヒンダードアミン化合物の濃度が１０～２０００質量ｐｐｍである、［１又は２］に記載の液晶表示素子。 [1] A pair of substrates and a liquid crystal layer disposed between the pair of substrates, wherein a plurality of common electrodes and pixel electrodes are formed on one substrate of the pair of substrates; 1. A liquid crystal display device, wherein the shortest distance between two pixel electrodes formed in the same plane on one substrate is less than 20 μm, and the liquid crystal layer contains a hindered amine compound.
[2] The liquid crystal display element according to [1], wherein the hindered amine compound is a compound represented by the following formula (1).

[In the formula, R ¹ represents a hydrogen atom, -O., -OH, or an alkyl group having 1 to 12 carbon atoms, and one or more -CH ₂ - present in the alkyl group is , -O-, -S-, -CH=CH-, -C≡C-, -CO-, -CO-O-, -O-CO-, -OCF ₂ -, or -CF ₂ O—, R ² , R ³ , R ⁴ and R ⁵ each independently represent an alkyl group having 1 to 8 carbon atoms, and one or two or more —CH ₂ — are each independently —O—, —S—, —CH═CH—, —C≡C—, —CO—, —CO—O—, —O—CO -, -OCF ₂ -, or -CF ₂ O-, R ² and R ³ may be bonded together to form a ring, and R ⁴ and R ⁵ are bonded together A ring may be formed, and R ⁶ and R ⁷ each independently represent a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, and one or more of -CH ₂ - each independently represents -O-, -S-, -CH=CH-, -C≡C-, -CO-, -CO-O-, -O-CO-, -OCF ₂ , — or —CF ₂ O—, R ⁸ represents a hydrogen atom or a monovalent organic group, and the monovalent organic group may be bonded to M ¹ to form a ring. Well, M ¹ represents an n-valent organic group, m represents an integer of 0 to 2, n represents an integer of 1 to 6, and when n is an integer of 2 to 6, a plurality of R ¹ to R ⁷ may be the same or different from each other. ]
[3] The liquid crystal display element according to [1 or 2], wherein the concentration of the hindered amine compound in the liquid crystal layer is 10 to 2000 mass ppm.

［式（Ｌ）中、Ｒ^Ｌ１及びＲ^Ｌ２は、それぞれ独立して炭素原子数１～８のアルキル基を表し、該アルキル基中の１個又は隣接していない２個以上の－ＣＨ_２－は、それぞれ独立して、－ＣＨ＝ＣＨ－、－Ｃ≡Ｃ－、－Ｏ－、－ＣＯ－、－ＣＯＯ－又は－ＯＣＯ－によって置換されていてもよく、ｎ^Ｌ１は、０、１、２又は３を表し、Ａ^Ｌ１、Ａ^Ｌ２及びＡ^Ｌ３は、それぞれ独立して、（ａ） １，４－シクロヘキシレン基（この基中に存在する１個の－ＣＨ_２－又は隣接していない２個以上の－ＣＨ_２－は－Ｏ－に置換されてもよい。）、（ｂ） １，４－フェニレン基（この基中に存在する１個の－ＣＨ＝又は隣接していない２個以上の－ＣＨ＝は－Ｎ＝に置換されてもよい。）、及び
（ｃ） （ｃ）ナフタレン－２，６－ジイル基、１，２，３，４－テトラヒドロナフタレン－２，６－ジイル基又はデカヒドロナフタレン－２，６－ジイル基（ナフタレン－２，６－ジイル基又は１，２，３，４－テトラヒドロナフタレン－２，６－ジイル基中に存在する１個の－ＣＨ＝又は隣接していない２個以上の－ＣＨ＝は－Ｎ＝に置換されてもよい。）からなる群より選ばれる基を表し、の基（ａ）、基（ｂ）及び基（ｃ）は、それぞれ独立してシアノ基、フッ素原子又は塩素原子で置換されていてもよく、Ｚ^Ｌ１及びＺ^Ｌ２は、それぞれ独立して、単結合、－ＣＨ_２ＣＨ_２－、－（ＣＨ_２）_４－、－ＯＣＨ_２－、－ＣＨ_２Ｏ－、－ＣＯＯ－、－ＯＣＯ－、－ＯＣＦ_２－、－ＣＦ_２Ｏ－、－ＣＨ＝Ｎ－Ｎ＝ＣＨ－、－ＣＨ＝ＣＨ－、－ＣＦ＝ＣＦ－又は－Ｃ≡Ｃ－を表し、ｎ^Ｌ１が２又は３であってＡ^Ｌ２が複数存在する場合は、それらは互いに同一であっても異なっていてもよく、ｎ^Ｌ１が２又は３であってＺ^Ｌ２が複数存在する場合は、それらは互いに同一であっても異なっていてもよい。］
［５］ 液晶層が、下記式（Ｌ－１－３）で表される化合物を更に含有する、［１］～［４］のいずれかに記載の液晶表示素子。

［式中、Ｒ^Ｌ１３及びＲ^Ｌ１４は、それぞれ独立して、炭素原子数１～８のアルキル基、炭素原子数１～８のアルキル基、又は炭素原子数１～８のアルコキシ基を表す。］ [4] The liquid crystal display element according to any one of [1] to [3], wherein the liquid crystal layer further contains a compound represented by the following formula (L).

[In the formula (L), 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 - are each independently optionally substituted by -CH=CH-, -C≡C-, -O-, -CO-, -COO- or -OCO-, and n ^L1 is 0, 1, 2 or 3, and A ^L1 , A ^L2 and A ^L3 are each independently (a) a 1,4-cyclohexylene group (one —CH ₂ — present in this group or non-adjacent (b) 1,4-phenylene group (one —CH= present in this group or _two non-adjacent The above —CH= may be substituted with —N=.), and (c) (c) naphthalene-2,6-diyl group, 1,2,3,4-tetrahydronaphthalene-2,6-diyl or decahydronaphthalene-2,6-diyl group (one —CH= present in the naphthalene-2,6-diyl group or 1,2,3,4-tetrahydronaphthalene-2,6-diyl group, or Two or more -CH= that are not adjacent may be substituted with -N=.) represents a group selected from the group consisting of: group (a), group (b) and group (c) each independently optionally substituted with a cyano group, a fluorine atom or a chlorine atom, and Z ^L1 and Z ^L2 each independently represent a single bond, —CH ₂ CH ₂ —, —(CH ₂ ) ₄ —, -OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, -OCF ₂ -, -CF ₂ O-, -CH=N-N=CH-, -CH=CH-, -CF=CF - or -C≡C-, when n ^L1 is 2 or 3 and there are a plurality of A ^L2 , they may be the same or different, and n ^L1 is 2 or 3 When there is more than one Z ^L2 in , they may be the same or different. ]
[5] The liquid crystal display element according to any one of [1] to [4], wherein the liquid crystal layer further contains a compound represented by the following formula (L-1-3).

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

［式（Ｎ－１）、（Ｎ－２）、（Ｎ－３）及び（Ｎ－４）中、
Ｒ^Ｎ１１、Ｒ^Ｎ１２、Ｒ^Ｎ２１、Ｒ^Ｎ２２、Ｒ^Ｎ３１、Ｒ^Ｎ３２、Ｒ^Ｎ４１及びＲ^Ｎ４２は、それぞれ独立して、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個又は隣接していない２個以上の－ＣＨ_２－は、それぞれ独立して、－ＣＨ＝ＣＨ－、－Ｃ≡Ｃ－、－Ｏ－、－ＣＯ－、－ＣＯＯ－又は－ＯＣＯ－によって置換されていてもよく、
Ａ^Ｎ１１、Ａ^Ｎ１２、Ａ^Ｎ２１、Ａ^Ｎ２２、Ａ^Ｎ３１、Ａ^Ｎ３２、Ａ^Ｎ４１及びＡ^Ｎ４２は、それぞれ独立して、
（ａ） １，４－シクロヘキシレン基（この基中に存在する１個の－ＣＨ_２－又は隣接していない２個以上の－ＣＨ_２－は－Ｏ－に置換されていてもよい。）、
（ｂ） １，４－フェニレン基（この基中に存在する１個の－ＣＨ＝又は隣接していない２個以上の－ＣＨ＝は－Ｎ＝に置換されていてもよい。）、
（ｃ） ナフタレン－２，６－ジイル基、１，２，３，４－テトラヒドロナフタレン－２，６－ジイル基又はデカヒドロナフタレン－２，６－ジイル基（ナフタレン－２，６－ジイル基又は１，２，３，４－テトラヒドロナフタレン－２，６－ジイル基中に存在する１個の－ＣＨ＝又は隣接していない２個以上の－ＣＨ＝は－Ｎ＝に置換されていてもよい。）及び
（ｄ） １，４－シクロヘキセニレン基
からなる群より選ばれる基を表し、基（ａ）、基（ｂ）、基（ｃ）及び基（ｄ）中の水素原子は、それぞれ独立して、シアノ基、フッ素原子又は塩素原子で置換されていてもよく、
Ｚ^Ｎ１１、Ｚ^Ｎ１２、Ｚ^Ｎ２１、Ｚ^Ｎ２２、Ｚ^Ｎ３１、Ｚ^Ｎ３２、Ｚ^Ｎ４１及びＺ^Ｎ４２は、それぞれ独立して、単結合、－ＣＨ_２ＣＨ_２－、－（ＣＨ_２）_４－、－ＯＣＨ_２－、－ＣＨ_２Ｏ－、－ＣＯＯ－、－ＯＣＯ－、－ＯＣＦ_２－、－ＣＦ_２Ｏ－、－ＣＨ＝Ｎ－Ｎ＝ＣＨ－、－ＣＨ＝ＣＨ－、－ＣＦ＝ＣＦ－、又は－Ｃ≡Ｃ－を表し、
Ｘ^Ｎ２１は、水素原子又はフッ素原子を表し、
Ｔ^Ｎ３１は、－ＣＨ_２－又は酸素原子を表し、
Ｘ^Ｎ４１は、酸素原子、窒素原子、又は－ＣＨ_２－を表し、
Ｙ^Ｎ４１は、単結合又は－ＣＨ_２－を表し、
ｎ^Ｎ１１、ｎ^Ｎ１２、ｎ^Ｎ２１、ｎ^Ｎ２２、ｎ^Ｎ３１、ｎ^Ｎ３２、ｎ^Ｎ４１、及びｎ^Ｎ４２は、それぞれ独立して０～３の整数を表すが、ｎ^Ｎ１１＋ｎ^Ｎ１２、ｎ^Ｎ２１＋ｎ^Ｎ２２及びｎ^Ｎ３１＋ｎ^Ｎ３２は、それぞれ独立して１、２又は３であり、Ａ^Ｎ１１～Ａ^Ｎ３２及びＺ^Ｎ１１～Ｚ^Ｎ３２がそれぞれ複数存在する場合は、それらは互いに同一であっても異なっていてもよく、ｎ^Ｎ４１＋ｎ^Ｎ４２は０～３の整数を表すが、Ａ^Ｎ４１、Ａ^Ｎ４２、Ｚ^Ｎ４１及びＺ^Ｎ４２がそれぞれ複数存在する場合は、それらは互いに同一であっても異なっていてもよい。］
［７］ 液晶層が、ヒンダードフェノール化合物を含有する、［１］～［６］のいずれかに記載の液晶表示素子。 [6] The liquid crystal layer further contains at least one compound selected from the group consisting of compounds represented by the following formulas (N-1), (N-2), (N-3) or (N-4): The liquid crystal display element according to any one of [1] to [5].

[In the formulas (N-1), (N-2), (N-3) and (N-4),
R ^N11 , R ^N12 , R ^N21 , R ^N22 , R ^N31 , R ^N32 , R ^N41 and R ^N42 each independently represent an alkyl group having 1 to 8 carbon atoms, and one or two or more —CH ₂ — that are not adjacent are each independently substituted with —CH═CH—, —C≡C—, —O—, —CO—, —COO— or —OCO—; may be
A ^N11 , A ^N12 , A ^N21 , A ^N22 , A ^N31 , A ^N32 , A ^N41 and A ^N42 are each independently
(a) 1,4-cyclohexylene group (one -CH ₂ - present in this group or two or more non-adjacent -CH ₂ - may be substituted with -O-); ,
(b) a 1,4-phenylene group (one -CH= or two or more non-adjacent -CH= present in this group may be substituted with -N=),
(c) naphthalene-2,6-diyl group, 1,2,3,4-tetrahydronaphthalene-2,6-diyl group or decahydronaphthalene-2,6-diyl group (naphthalene-2,6-diyl group or One -CH= or two or more non-adjacent -CH= present in the 1,2,3,4-tetrahydronaphthalene-2,6-diyl group may be substituted with -N= ) and (d) represents a group selected from the group consisting of 1,4-cyclohexenylene groups, and the hydrogen atoms in group (a), group (b), group (c) and group (d) are each independently optionally substituted with a cyano group, a fluorine atom or a chlorine atom,
Z ^N11 , Z ^N12 , Z ^N21 , Z ^N22 , Z ^N31 , Z ^N32 , Z ^N41 and Z ^N42 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 represents -C≡C-,
X ^N21 represents a hydrogen atom or a fluorine atom,
T ^N31 represents —CH ₂ — or an oxygen atom,
X ^N41 represents an oxygen atom, a nitrogen atom, or —CH ₂ —;
Y ^N41 represents a single bond or —CH ₂ —;
n ^N11 , n ^N12 , n ^N21 , n ^N22 , n ^N31 , n ^N32 , n ^N41 and n ^N42 each independently represent an integer of 0 to 3, but n ^N11 +n ^N12 , n ^N21 + n ^N22 and n ^N31 +n ^N32 are each independently 1, 2 or 3, and when there are a plurality of A ^N11 to A ^N32 and Z ^N11 to Z ^N32 , they may be the same or different, n ^N41 +n ^N42 represents an integer of 0 to 3, and when there are a plurality of each of A ^N41 , A ^N42 , Z ^N41 and Z ^N42 , they may be the same or different. ]
[7] The liquid crystal display element according to any one of [1] to [6], wherein the liquid crystal layer contains a hindered phenol compound.

[8] A plurality of common electrodes and pixel electrodes are formed in the same plane on one substrate, and the shortest distance between the common electrode and the pixel electrodes is less than 20 μm, [1] to [7] The liquid crystal display element according to any one of 1.
[9] A plurality of common electrodes are formed in a first plane on one substrate, and a plurality of pixel electrodes are formed in a second plane different from the first plane on one substrate. and the shortest distance between the plurality of pixel electrodes is less than 20 μm.

According to the present invention, it is possible to suppress the twist angle shift in a liquid crystal display element having a short inter-electrode distance. Further, according to the present invention, it is possible to simultaneously suppress the shift of the twist angle and keep the driving voltage low.

1 is a schematic cross-sectional view showing a liquid crystal display element according to one embodiment; FIG. It is a schematic cross section showing a liquid crystal display element according to another embodiment.

FIG. 1 is a schematic cross-sectional view showing a liquid crystal display element according to one embodiment. As shown in FIG. 1, a liquid crystal display element 1A according to one embodiment includes a pair of substrates including a first substrate 2 and a second substrate 3, and a pair of substrates (the first substrate 2 and the second substrate). 3) a liquid crystal layer 4 provided therebetween;

A first polarizing plate 5 is provided on the surface of the first substrate 2 opposite to the liquid crystal layer 4 . A color filter 6 and a first alignment film 7 are provided on the surface of the first substrate 2 on the side of the liquid crystal layer 4 in order of proximity to the first substrate 2 . A second polarizing plate 8 is provided on the surface of the second substrate 3 opposite to the liquid crystal layer 4 . A plurality of common electrodes 9a and pixel electrodes 10a are formed on the surface of the second substrate 3 on the liquid crystal layer 4 side (within the same surface). An alignment film 11 is further provided.

That is, the liquid crystal display element 1A according to one embodiment includes a first polarizing plate 5, a first substrate 2, a color filter 6, a first alignment film 7, a liquid crystal layer 4, and a second alignment film. A film 11, a plurality of common electrodes 9a and pixel electrodes 10a, a second substrate 3, and a second polarizing plate 8 are provided in this order. Such a liquid crystal display element 1A is an IPS mode liquid crystal display element. Instead of being provided between the first substrate 2 and the first alignment film 7, the color filter 6 is provided between the second substrate 3, the common electrode 9a, the pixel electrode 10a and the second alignment film 11. (On the surface of the second substrate 3 on the liquid crystal layer 4 side).

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 is made of a transparent material or an opaque material such as metal or silicon. good. The first substrate 2 and the second substrate 3 are attached to each other by a sealing material such as an epoxy-based thermosetting composition and a sealing material arranged in the peripheral region, and a distance between the substrates is maintained therebetween. For this purpose, 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 5 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 are normally black mode. It is preferable to have the transmission axes orthogonal to each other so as to operate at . In particular, one of the first polarizing plate 5 and 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 6 preferably has a black matrix, and preferably has 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. The black matrix may be installed separately from the color filters, or it may reduce the transmittance by overlapping the colors of the color filters.

The first alignment film 7 and the second alignment film 11 form a pair of alignment films that are in direct contact with the polymerizable liquid crystal composition forming the liquid crystal layer 4 to induce homogeneous alignment. The first alignment film 7 and the second alignment film 11 are made of polyimide, for example.

The common electrode 9a and the pixel electrode 10a are each made of a transparent material such as ITO. The shortest distance between the common electrode 9a and the pixel electrode 10a formed in the same plane on the second substrate 3 (inside the plane of the second substrate 3 on the side of the liquid crystal layer 4) (hereinafter also referred to as "inter-electrode distance") ) L1 is less than 20 μm. The shortest distance (inter-electrode distance) L1 between the common electrode 9a and the pixel electrode 10a is defined as the shortest straight line distance connecting the end of the common electrode 9a and the pixel electrode 10a. The shortest distance (inter-electrode distance) L1 between the common electrode 9a and the pixel electrode 10a is preferably 15 μm or less or 12 μm or less from the viewpoint of obtaining a more remarkable effect of suppressing twist angle shift (details will be described later). Since it is necessary to increase the drive voltage as the inter-electrode distance L1 becomes longer, it is more preferably 10 μm or less, 9 μm or less, 8 μm or less, 7 μm or less, or 6 μm from the viewpoint of achieving both the drive voltage and the twist angle shift. or less, or 5 μm or less, or 2 μm or more, or 3.5 μm or more.

FIG. 2 is a schematic cross-sectional view showing a liquid crystal display element according to another embodiment. Constituent elements common to those of the liquid crystal display element 1A shown in FIG. As shown in FIG. 2, a liquid crystal display element 1B according to another embodiment includes a pair of substrates consisting of a first substrate 2 and a second substrate 3, and a pair of substrates (the first substrate 2 and the second substrate 3). and a liquid crystal layer 4 provided between the substrates 3).

A first polarizing plate 5 is provided on the surface of the first substrate 2 opposite to the liquid crystal layer 4 . A color filter 6 and a first alignment film 7 are provided on the surface of the first substrate 2 on the side of the liquid crystal layer 4 in order of proximity to the first substrate 2 . A second polarizing plate 8 is provided on the surface of the second substrate 3 opposite to the liquid crystal layer 4 . A plurality of common electrodes 9b are formed on the surface of the second substrate 3 on the liquid crystal layer 4 side, and an insulating layer 12 is further provided so as to cover the common electrodes 9b. A plurality of pixel electrodes 10b are further formed on the second substrate 3 (on the surface of the insulating layer 12), and a second alignment film 11 is further provided to cover the common electrode 9b. That is, in this liquid crystal display element 1B, a plurality of common electrodes 9b are formed in the first plane on the second substrate 3, and a plurality of pixel electrodes 10b are formed in the first plane on the second substrate 3. is formed in a second plane different from the plane of The insulating layer 12 may be formed of an organic insulating film, for example, as shown in FIG. 2, or may be formed of an inorganic insulating film such as silicon nitride.

That is, a liquid crystal display element 1B according to another embodiment includes a first polarizing plate 5, a first substrate 2, a color filter 6, a first alignment film 7, a liquid crystal layer 4, a second , an alignment film 11, a plurality of pixel electrodes 10b, an insulating layer 12, a plurality of common electrodes 9b, a second substrate 3, and a second polarizing plate 8 in this order. Such a liquid crystal display element 1B is an FFS mode liquid crystal display element. Instead of being provided between the first substrate 2 and the first alignment film 7, the color filter 6 is provided between the second substrate 3 and the common electrode 9b (on the liquid crystal layer 4 side of the second substrate 3). surface).

In this liquid crystal display element 1B, the shortest distance between a plurality of pixel electrodes 10b, 10b (hereinafter referred to as "electrode L2 (also referred to as "interval distance") is less than 20 μm. The shortest distance (inter-electrode distance) L2 between the pixel electrodes 10b, 10b is defined as the shortest distance among straight-line distances connecting the pixel electrodes 10b, 10b. The shortest distance (inter-electrode distance) L2 between the pixel electrodes 10b and 10b is preferably 15 μm or less or 12 μm or less from the viewpoint of obtaining a more pronounced twist angle shift suppressing effect (details will be described later). Since it is necessary to increase the driving voltage as the distance L2 increases, from the viewpoint of achieving both the driving voltage and the twist angle shift, it is more preferably 10 μm or less, 9 μm or less, 8 μm or less, 7 μm or less, 6 μm or less, or 5 μm or less, and 2 μm or more or 3.5 μm or more.

In both of the liquid crystal display elements 1A and 1B described above, a horizontal electric field (an electric field parallel to the substrates 2 and 3) is generated by the common electrodes 9a and 9b and the pixel electrodes 10a and 10b. The liquid crystal molecules are twisted (rotated) in a direction parallel to the substrates 2 and 3 . According to studies by the present inventors, in the liquid crystal display elements 1A and 1B, when the distance L1 and L2 between the two electrodes formed in the same plane on the second substrate 3 is less than 20 μm, the electric field is It was found that a phenomenon (twist angle shift) in which the liquid crystal molecules do not return to the initial twist angle when no voltage is applied is likely to occur. The present inventors found that by including a hindered amine compound in the liquid crystal layer 4, it is possible to suppress the shift of the twist angle and reduce the drive voltage in the liquid crystal display elements 1A and 1B in which the inter-electrode distances L1 and L2 are less than 20 μm. It has been found that it is possible to keep it low (low power consumption). That is, the liquid crystal layer 4 is made of a liquid crystal composition containing a hindered amine compound, and in one embodiment, made of a liquid crystal composition containing a hindered amine compound and a liquid crystal compound.

In this specification, the term "twist angle shift" means the amount of change from the initial twist angle to the twist angle after voltage application. The twist angle is an angle representing the deviation of the initial easy axis of orientation of the first substrate 2 and the second substrate 3 . If the shift of the twist angle is large, light leakage in the panel and fluctuations in gradation occur, and burn-in is likely to occur, which may cause display defects.

A hindered amine compound is a compound having a hindered amine structure, such as a compound represented by the following formula (1).

R ¹ represents a hydrogen atom, —O., —OH, or an alkyl group having 1 to 12 carbon atoms, and one or more —CH ₂ — present in the alkyl group are each independently -O-, -S-, -CH=CH-, -C≡C-, -CO-, -CO-O-, -O-CO-, -OCF ₂ -, or -CF ₂ O- may be substituted. R ¹ is preferably a hydrogen atom or an unsubstituted alkyl group having 1 to 12 carbon atoms. The number of carbon atoms in the alkyl group is preferably 1-8, 1-4, 1-2, or 1.

R ² , R ³ , R ⁴ and R ⁵ each independently represent an alkyl group having 1 to 8 carbon atoms, and one or more —CH ₂ — present in the alkyl group are each independently -O-, -S-, -CH=CH-, -C≡C-, -CO-, -CO-O-, -O-CO-, -OCF ₂ -, or -CF ₂ It may be substituted with O—, R ² and R ³ may combine to form a ring, and R ⁴ and R ⁵ may combine to form a ring. The alkyl group may have a branch. R ² , R ³ , R ⁴ and R ⁵ are each independently preferably an unsubstituted alkyl group having 1 to 8 carbon atoms. The number of carbon atoms in the alkyl group is preferably 1-6, 1-4, 1-2, or 1.

R ⁶ and R ⁷ each independently represent a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, and one or more —CH ₂ — present in the alkyl group each independently -O-, -S-, -CH=CH-, -C≡C-, -CO-, -CO-O-, -O-CO-, -OCF ₂ , - or -CF ₂ O- may be substituted. R ⁶ and R ⁷ are each independently preferably a hydrogen atom or an unsubstituted alkyl group having 1 to 6 carbon atoms, more preferably a hydrogen atom.

R ⁸ represents a hydrogen atom or a monovalent organic group, and the monovalent organic group may combine with M ¹ to form a ring. R ⁸ is preferably a hydrogen atom or a monovalent organic group bonded to M ¹ to form a ring.

M ¹ represents an n-valent organic group. M ¹ preferably represents an n-valent hydrocarbon group, and one or more —CH ₂ — present in the hydrocarbon group are each independently —O—, —CO—O - or may be substituted with -O-CO-, and one or more -H present in the hydrocarbon group may be substituted with -OH. When one or more —H present in the hydrocarbon group is replaced with —OH, M ¹ may be, for example, a group having a hindered phenol structure (skeleton).

m represents an integer of 0 to 2, preferably 0 or 1; n represents an integer of 1 to 6, and when n is an integer of 2 to 6, a plurality of R ¹ to R ⁷ may be the same or different from each other. n is preferably 1, 2, 3 or 4.

式中、Ｍ^２Ａはｎ価の有機基を表し、Ｍ^２Ｂは－ＣＯ－Ｏ－又は－Ｏ－ＣＯ－を表し、Ｒ^１、Ｒ^２、Ｒ^３、Ｒ^４、Ｒ^５、Ｒ^６、Ｒ^７、ｍ及びｎは、式（１）中のＲ^１、Ｒ^２、Ｒ^３、Ｒ^４、Ｒ^５、Ｒ^６、Ｒ^７、ｍ及びｎとそれぞれ同義である。 The hindered amine compound represented by Formula (1) may be a compound represented by Formula (2-1) below.

In the formula, M ^2A represents an n-valent organic group, M ^2B represents -CO-O- or -O-CO-, R ¹ , R ² , R ³ , R ⁴ , R ⁵ , R ⁶ , R ⁷ , m and n are synonymous with R ¹ , R ² , R ³ , R ⁴ , R ⁵ , R ⁶ , R ⁷ , m and n in Formula (1), respectively.

^M2A preferably represents an n-valent hydrocarbon group, and one or more —H present in the hydrocarbon group may be substituted with —OH. When one or more —H present in the hydrocarbon group is replaced with —OH, ^M2A may be, for example, a group having a hindered phenol structure (skeleton). ^M2A may be an n-valent aliphatic hydrocarbon group. The aliphatic hydrocarbon group may be linear or have an aliphatic hydrocarbon ring. The aliphatic hydrocarbon group may be a saturated aliphatic hydrocarbon group and may have an unsaturated bond. The number of carbon atoms in the group represented by ^M2A may be, for example, 1 or more, 2 or more, or 3 or more, and may be 40 or less, 30 or less, or 20 or less.

式中、Ｍ^２Ａ、Ｒ^１、Ｒ^２、Ｒ^３、Ｒ^４、Ｒ^５、Ｒ^６、Ｒ^７及びｎは、式（２－１）中のＭ^２Ａ、Ｒ^１、Ｒ^２、Ｒ^３、Ｒ^４、Ｒ^５、Ｒ^６、Ｒ^７及びｎとそれぞれ同義である。 The hindered amine compound represented by formula (2-1) may be a compound represented by formula (2-2) or (2-3) below.

wherein M ^2A , R ¹ , R ² , R ³ , R ⁴ , R ⁵ , R ⁶ , R ⁷ and n are M ^2A , R ¹ , R ² , R ³ , have the same meanings as R ⁴ , R ⁵ , R ⁶ , R ⁷ and n.

式中、Ｍ^３Ａはｎ価の有機基を表し、Ｒ^９は水素原子又は炭素原子数１～８のアルキル基を表す。Ｒ^１、Ｒ^２、Ｒ^３、Ｒ^４、Ｒ^５、Ｒ^６、Ｒ^７及びｎは、式（１）中のＲ^１、Ｒ^２、Ｒ^３、Ｒ^４、Ｒ^５、Ｒ^６、Ｒ^７及びｎとそれぞれ同義である。 The hindered amine compound represented by Formula (1) may be a compound represented by Formula (3-1) below.

In the formula, M ^3A represents an n-valent organic group and R ⁹ represents a hydrogen atom or an alkyl group having 1 to 8 carbon atoms. R ¹ , R ² , R ³ , R ⁴ , R ⁵ , R ⁶ , R ⁷ and n are R ¹ , R ² , R ³ , R ⁴ , R ⁵ , R ⁶ and R ⁷ in formula (1) and n are synonymous, respectively.

M ^3A preferably represents an n-valent hydrocarbon group, and one or more —CH ₂ — present in the hydrocarbon group are each independently —CO—O— or —O It may be substituted with -CO-, and one or more -H present in the hydrocarbon group may be substituted with -OH. When one or more —H present in the hydrocarbon group is replaced with —OH, ^M3A may be, for example, a group having a hindered phenol structure (skeleton). The number of carbon atoms in the alkyl group represented by R ⁹ may be 1-6, 1-4, or 1-2.

式中、Ｍ^３Ａ、Ｒ^１、Ｒ^２、Ｒ^３、Ｒ^４、Ｒ^５、Ｒ^６、Ｒ^７、Ｒ^９及びｎは、式（３－１）中のＭ^３Ａ、Ｒ^１、Ｒ^２、Ｒ^３、Ｒ^４、Ｒ^５、Ｒ^６、Ｒ^７、Ｒ^９及びｎとそれぞれ同義である。 The hindered amine compound represented by formula (3-1) may be a compound represented by formula (3-2) below.

wherein M ^3A , R ¹ , R ² , R ³ , R ⁴ , R ⁵ , R ⁶ , R ⁷ , R ⁹ and n are M ^3A , R ¹ , R ² , have the same meanings as R ³ , R ⁴ , R ⁵ , R ⁶ , R ⁷ , R ⁹ and n.

The liquid crystal layer 4 contains one or more hindered amine compounds. The concentration of the hindered amine compound in the liquid crystal layer 4 (liquid crystal composition) (in the case of two or more, the total concentration thereof) is preferably 10 mass ppm or more and 50 mass ppm from the viewpoint of further suppressing the twist angle shift. ppm or more, 100 mass ppm or more, 200 mass ppm or more, 300 mass ppm or more, 400 mass ppm or more, or 500 mass ppm or more. The concentration of the hindered amine compound in the liquid crystal layer 4 (liquid crystal composition) (in the case of two or more, the total concentration thereof) may be, for example, 2000 mass ppm or less, 1500 mass ppm or less, or 1000 mass ppm or less. The concentrations of the hindered amine compounds in the liquid crystal layer 4 (liquid crystal composition) (in the case of two or more, the total concentration thereof) are 10 to 2000 mass ppm, 10 to 1500 mass ppm, 10 to 1000 mass ppm, and 50 to 2000 mass ppm. Mass ppm, 50 to 1500 mass ppm, 50 to 1000 mass ppm, 100 to 2000 mass ppm, 100 to 1500 mass ppm, 100 to 1000 mass ppm, 200 to 2000 mass ppm, 200 to 1500 mass ppm, 200 to 1000 mass ppm or It may be 500 to 1000 mass ppm.

で表される化合物である。 The liquid crystal compound has, for example, general formula (L):

It is a compound represented by

In formula (L),
R ^L1 and R ^L2 each independently represent an alkyl group having 1 to 8 carbon atoms, and one 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 substituted with —O—),
(b) a 1,4-phenylene group (one —CH= or two or more non-adjacent —CH= present in this group may be substituted with —N=), and (c ) (c) naphthalene-2,6-diyl group, 1,2,3,4-tetrahydronaphthalene-2,6-diyl group or decahydronaphthalene-2,6-diyl group (naphthalene-2,6-diyl group Alternatively, one -CH= or two or more non-adjacent -CH= present in the 1,2,3,4-tetrahydronaphthalene-2,6-diyl group may be substituted with -N= .) represents a group selected from the group consisting of, wherein the groups (a), (b) and (c) are each independently 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 from each other.

The compound represented by general formula (L) corresponds to a dielectrically almost neutral compound (Δε value of −2 to 2). The compounds represented by general formula (L) may be used alone, or may 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 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. Or in another embodiment, 2 types, 3 types, 4 types, 5 types, 6 types, 7 types, 8 types, 9 types, 10 types or more be.

In the composition of the present embodiment, the content of the compound represented by the general formula (L) includes solubility at low temperature, transition temperature, electrical reliability, birefringence, process suitability, drip marks, and seizure. , dielectric anisotropy, etc., must be appropriately adjusted according to the required performance.

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 embodiment is 1% by mass or more, 10% by mass or more, and 20% by mass or more. , 30% by mass or more, 40% by mass or more, 50% by mass or more, 55% by mass or more, 60% by mass or more, 65% by mass or more, 70% by mass or more, It is 75% by mass or more, and 80% by mass or more. The upper limit of the preferred content is 95% by mass or less, 85% by mass or less, 75% by mass or less, 65% by mass or less, 55% by mass or less, and 45% by mass or less, It is 35% by mass or less, and 25% by mass or less.

When the viscosity of the composition of the present embodiment is kept low and a composition with 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 the Tni of the composition of the present embodiment is kept high and a composition with good temperature stability is required, it is preferable that the above lower limit value is high and the upper limit value is high. 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. At least one of them 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) (black dots in each formula represent bonds).

^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.

を表すことがより好ましく、トランス－１，４－シクロへキシレン基又は１，４－フェニレン基を表すことがより好ましい。 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, and has the following structure:

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 (L) preferably has 0 or 1 halogen atoms in the molecule.

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

（式中、Ｒ^Ｌ１１及びＲ^Ｌ１２はそれぞれ独立して、一般式（Ｌ）におけるＲ^Ｌ１及びＲ^Ｌ２と同じ意味を表す。） 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 (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.

A preferable lower limit of the content is 1% by mass or more, 2% by mass or more, 3% by mass or more, 5% by mass or more, and 7% by mass with respect to the total amount of the composition of the present embodiment. % or more, 10% by mass or more, 15% by mass or more, 20% by mass or more, 25% by mass or more, 30% by mass or more, 35% by mass or more, 40% by mass or more, 45% by mass or more, 50% by mass or more, and 55% by mass or more. The upper limit of the preferable content is 95% by mass or less, 90% by mass or less, 85% by mass or less, 80% by mass or less, and 75% by mass with respect to the total amount of the composition of the present embodiment. % or less, 70% by mass or less, 65% by mass or less, 60% by mass or less, 55% by mass or less, 50% by mass or less, 45% by mass or less, 40% by mass 35% by mass or less, 30% by mass or less, and 25% by mass or less.

When the viscosity of the composition of the present embodiment is kept low and a composition with 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 the Tni of the composition of the present invention is kept high and a composition with good temperature stability is required, it is preferable that the 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.

（式中Ｒ^Ｌ１２は一般式（Ｌ－１）における意味と同じ意味を表す。） 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 embodiment is 1% by mass or more, 2% by mass or more, It is 3% by mass or more, 5% by mass or more, 7% by mass or more, and 10% by mass or more. The upper limit of the preferable content is 20% by mass or less, 15% by mass or less, 13% by mass or less, 10% by mass or less, and 8% by mass with respect to the total amount of the composition of the present embodiment. % or less, 7 mass % or less, 6 mass % or less, 5 mass % or less, and 3 mass % or less.

（式中Ｒ^Ｌ１２は一般式（Ｌ－１）における意味と同じ意味を表す。） 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 lower limit of the preferable content of the compound represented by formula (L-1-2) with respect to the total amount of the composition of the present embodiment is 1% by mass or more, 5% by mass or more, and 10% by mass. % or more, 15% by mass or more, 17% by mass or more, 20% by mass or more, 23% by mass or more, 25% by mass or more, 27% by mass or more, 30% by mass It is more than or equal to 35% by mass or more. The upper limit of the preferable content is 60% by mass or less, 55% by mass or less, 50% by mass or less, 45% by mass or less, and 42% by mass with respect to the total amount of the composition of the present embodiment. %, 40% by mass or less, 38% by mass or less, 35% by mass or less, 33% by mass or less, and 30% by mass or less.

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 preferable because it particularly improves the response speed of the composition of the present embodiment. 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. .

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

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

（式中、Ｒ^Ｌ１３及びＲ^Ｌ１４は、それぞれ独立して、炭素原子数１～８のアルキル基、炭素原子数１～８のアルキル基、又は炭素原子数１～８のアルコキシ基を表す。） 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, 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 an alkyl group having 2 to 8 carbon atoms, an alkyl group having 2 to 8 carbon atoms, or an alkoxy group having 2 to 8 carbon atoms, more preferably linear is an alkyl group having 1 to 5 carbon atoms, a linear alkoxy group having 1 to 4 carbon atoms, or a linear alkenyl group having 2 to 5 carbon atoms.

The lower limit of the preferable content of the compound represented by formula (L-1-3) with respect to the total amount of the composition of the present embodiment is 1% by mass or more, 5% by mass or more, and 10% by mass. % or more, 13 mass% or more, 15 mass% or more, 17 mass% or more, 20 mass% or more, 23 mass% or more, 25 mass% or more, 30 mass% That's it. The upper limit of the preferable content is 60% by mass or less, 55% by mass or less, 50% by mass or less, 45% by mass or less, and 40% by mass with respect to the total amount of the composition of the present embodiment. % or less, 37 mass% or less, 35 mass% or less, 33 mass% or less, 30 mass% or less, 27 mass% or less, 25 mass% or less, 23 mass% 20% by mass or less, 17% by mass or less, 15% by mass or less, 13% by mass or less, and 10% by mass or less.

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 preferable because it particularly improves the response speed of the composition of the present embodiment. 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-1-3.12) The content of is not preferably 20% or more in order to improve the solubility at low temperature.

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 embodiment is 1% by mass or more, 2% by mass or more, 3% by mass or more, 5% by mass or more, 7% by mass or more, 10% by mass or more, 13% by mass or more, 15% by mass or more, 18% by mass or more, 20 % by mass or more. The upper limit of the preferable content is 20% by mass or less, 17% by mass or less, 15% by mass or less, 13% by mass or less, and 10% by mass with respect to the total amount of the composition of the present embodiment. % or less, 8 mass % or less, 7 mass % or less, and 6 mass % or less.

（式中Ｒ^Ｌ１５及びＲ^Ｌ１６はそれぞれ独立して炭素原子数１～８のアルキル基又は炭素原子数１～８のアルコキシ基を表す。） 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 lower limit of the preferable content of the compound represented by formula (L-1-4) with respect to the total amount of the composition of the present embodiment is 1% by mass or more, 5% by mass or more, and 10% by mass. % or more, 13 mass % or more, 15 mass % or more, 17 mass % or more, and 20 mass % or more. The upper limit of the preferable content is 25% by mass or less, 23% by mass or less, 20% by mass or less, 17% by mass or less, and 15% by mass with respect to the total amount of the composition of the present embodiment. % or less, 13 mass % or less, and 10 mass % or less.

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

Furthermore, the compounds represented by general formulas (L-1-4) and (L-1-5) are represented by formulas (L-1-4.1) to formulas (L-1-4.3) and formulas ( L-1-5.1) to formula (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) is preferred.

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

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 compounds represented by formula (L-1-4.2). The preferred lower limit of the total content of these compounds is 1% by mass or more, 2% by mass or more, 3% by mass or more, and 5% by mass with respect to the total amount of the composition of the present embodiment. % by mass or more, 7% by mass or more, 10% by mass or more, 13% by mass or more, 15% by mass or more, 18% by mass or more, 20% by mass or more, 23% by mass % or more, 25 mass % or more, 27 mass % or more, 30 mass % or more, 33 mass % or more, and 35 mass % or more. The upper limit of the preferred content is 80% by mass or less, 70% by mass or less, 60% by mass or less, 50% by mass or less, and 45% by mass with respect to the total amount of the composition of the present embodiment. % or less, 40% by mass or less, 37% by mass or less, 35% by mass or less, 33% by mass or less, 30% by mass or less, 28% by mass or less, and 25% by mass or less, 23% by mass or less, and 20% by mass or less.

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

（式中Ｒ^Ｌ１７及びＲ^Ｌ１８はそれぞれ独立してメチル基又は水素原子を表す。） 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 lower limit of the preferable content of the compound represented by formula (L-1-6) with respect to the total amount of the composition of the present embodiment is 1% by mass or more, 5% by mass or more, and 10% by mass. % or more, 15% by mass or more, 17% by mass or more, 20% by mass or more, 23% by mass or more, 25% by mass or more, 27% by mass or more, 30% by mass It is more than or equal to 35% by mass or more. The upper limit of the preferable content is 60% by mass or less, 55% by mass or less, 50% by mass or less, 45% by mass or less, and 42% by mass with respect to the total amount of the composition of the present embodiment. %, 40% by mass or less, 38% by mass or less, 35% by mass or less, 33% by mass or less, and 30% by mass or less.

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.

（式中、Ｒ^Ｌ２１及びＲ^Ｌ２２はそれぞれ独立して、一般式（Ｌ）におけるＲ^Ｌ１及びＲ^Ｌ２と同じ意味を表す。） 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 (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-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.

If the solubility at low temperature is important, setting the content to a large amount is effective, and conversely, if the response speed is important, setting the content to a small amount 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.

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 embodiment is 1% by mass or more, 2% by mass or more, and 3% by mass or more. , 5% by mass or more, 7% by mass or more, and 10% by mass or more. The upper limit of the preferable content is 20% by mass or less, 15% by mass or less, 13% by mass or less, 10% by mass or less, and 8% by mass with respect to the total amount of the composition of the present embodiment. % or less, 7 mass % or less, 6 mass % or less, 5 mass % or less, and 3 mass % or less.

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.

（式中、Ｒ^Ｌ３１及びＲ^Ｌ３２はそれぞれ独立して、一般式（Ｌ）におけるＲ^Ｌ１及びＲ^Ｌ２と同じ意味を表す。） The compound represented by general formula (L-3) is the following compound.

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

R ^L31 and R ^L32 are each independently preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

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.

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 embodiment is 1% by mass or more, 2% by mass or more, and 3% by mass or more. , 5% by mass or more, 7% by mass or more, and 10% by mass or more. The upper limit of the preferable content is 20% by mass or less, 15% by mass or less, 13% by mass or less, 10% by mass or less, and 8% by mass with respect to the total amount of the composition of the present embodiment. % or less, 7 mass % or less, 6 mass % or less, 5 mass % or less, and 3 mass % or less.

When a high birefringence is to be obtained, setting the content to a large amount is highly effective, and conversely, when emphasizing a high Tni, setting the content to a small amount is highly 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-3.7) are preferred.

（式中、Ｒ^Ｌ４１及びＲ^Ｌ４２はそれぞれ独立して、一般式（Ｌ）におけるＲ^Ｌ１及びＲ^Ｌ２と同じ意味を表す。） 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 (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.

In the composition of the present embodiment, the content of the compound represented by the general formula (L-4) includes solubility at low temperature, transition temperature, electrical reliability, birefringence, process compatibility, drip marks , image sticking, dielectric anisotropy, etc., should be adjusted as appropriate.

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

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 embodiment is 3% by mass or more, 5% by mass or more, 7% by mass or more, 9% by mass or more, 11% by mass or more, 12% by mass or more, 13% by mass or more, 18% by mass or more, 21 % by mass or more. The upper limit of the preferred content is 45% by mass or less, 40% by mass or less, 35% by mass or less, 30% by mass or less, 25% by mass or less, and 23% by mass or less, It is 20% by mass or less, 18% by mass or less, 15% by mass or less, 13% by mass or less, 10% by mass or less, and 8% by mass or less.

When both the compound represented by formula (L-4.1) and the compound represented by formula (L-4.2) are contained, both compounds with respect to the total amount of the composition of this embodiment is preferably 15% by mass or more, 19% by mass or more, 24% by mass or more, and 30% by mass or more. The upper limit of the preferred content is 45% by mass or less, 40% by mass or less, 35% by mass or less, 30% by mass or less, 25% by mass or less, and 23% by mass or less, It is 20% by mass or less, 18% by mass or less, 15% by mass or less, and 13% by mass or less.

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) may be

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 embodiment is 3% by mass or more, 5% by mass or more, 7% by mass or more, 9% by mass or more, 11% by mass or more, 12% by mass or more, 13% by mass or more, 18% by mass or more, 21 % by mass or more. A preferable upper limit is 45% by mass or less, 40% by mass or less, 35% by mass or less, 30% by mass or less, 25% by mass or less, 23% by mass or less, and 20% by mass. 18% by mass or less, 15% by mass or less, 13% by mass or less, 10% by mass or less, and 8% by mass or less.

When both the compound represented by formula (L-4.4) and the compound represented by formula (L-4.5) are contained, both compounds with respect to the total amount of the composition of this embodiment The lower limit of the preferred content is 15% by mass or more, 19% by mass or more, 24% by mass or more, and 30% by mass or more, and the preferable upper limit is 45% by mass or less, 40 % by mass or less, 35% by mass or less, 30% by mass or less, 25% by mass or less, 23% by mass or less, 20% by mass or less, 18% by mass or less, and 15% by mass % or less and 13% by mass or less.

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.

（式中、Ｒ^Ｌ５１及びＲ^Ｌ５２はそれぞれ独立して、一般式（Ｌ）におけるＲ^Ｌ１及びＲ^Ｌ２と同じ意味を表す。） 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 (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.

In the composition of the present embodiment, the content of the compound represented by the general formula (L-5) includes solubility at low temperature, transition temperature, electrical reliability, birefringence, process suitability, drip marks , image sticking, dielectric anisotropy, etc., should be adjusted as appropriate.

The lower 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 embodiment is 1% by mass or more, 2% by mass or more, and 3% by mass or more. is 5% by mass or more, 7% by mass or more, 10% by mass or more, 14% by mass or more, 16% by mass or more, 20% by mass or more, and 23% by mass or more 26% by mass or more, 30% by mass or more, 35% by mass or more, and 40% by mass or more. 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 embodiment is 50% by mass or less, 40% by mass or less, and 35% by mass or less. , 30% by mass or less, 20% by mass or less, 15% by mass or less, 10% by mass or less, and 5% by mass or less.

The compound represented by general formula (L-5) is preferably a compound represented by formula (L-5.1) or formula (L-5.2), particularly formula (L-5. A compound represented by 1) is preferable.

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

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 embodiment are 1% by mass or more, 2% by mass or more, 3% by mass or more, and 5% by mass or more. , 7% by mass or more. The upper limits of the preferable content of these compounds are 20% by mass or less, 15% by mass or less, 13% by mass or less, 10% by mass or less, and 9% by mass or less.

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 embodiment are 1% by mass or more, 2% by mass or more, 3% by mass or more, and 5% by mass or more. , 7% by mass or more. The upper limits of the preferable content of these compounds are 20% by mass or less, 15% by mass or less, 13% by mass or less, 10% by mass or less, and 9% by mass or less.

（式中、Ｒ^Ｌ６１及びＲ^Ｌ６２はそれぞれ独立して、一般式（Ｌ）におけるＲ^Ｌ１及びＲ^Ｌ２と同じ意味を表し、Ｘ^Ｌ６１及びＸ^Ｌ６２はそれぞれ独立して水素原子又はフッ素原子を表す。） The compound represented by general formula (L-6) is the following compound.

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

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.

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 embodiment is 1% by mass or more, 2% by mass or more, and 3% by mass or more. is 5% by mass or more, 7% by mass or more, 10% by mass or more, 14% by mass or more, 16% by mass or more, 20% by mass or more, and 23% by mass or more 26% by mass or more, 30% by mass or more, 35% by mass or more, and 40% by mass or more. 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 embodiment is 50% by mass or less, 40% by mass or less, and 35% by mass or less. , 30% by mass or less, 20% by mass or less, 15% by mass or less, 10% by mass or less, and 5% by mass or less. 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 embodiment are 1% by mass or more, 2% by mass or more, 3% by mass or more, and 5% by mass or more. , 7% by mass or more. The upper limits of the preferable content of these compounds are 20% by mass or less, 15% by mass or less, 13% by mass or less, 10% by mass or less, and 9% by mass or less.

（式中、Ｒ^Ｌ７１及びＲ^Ｌ７２はそれぞれ独立して一般式（Ｌ）におけるＲ^Ｌ１及びＲ^Ｌ２と同じ意味を表し、Ａ^Ｌ７１及びＡ^Ｌ７２はそれぞれ独立して一般式（Ｌ）におけるＡ^Ｌ２及びＡ^Ｌ３と同じ意味を表すが、Ａ^Ｌ７１及びＡ^Ｌ７２上の水素原子はそれぞれ独立してフッ素原子によって置換されていてもよく、Ｚ^Ｌ７１は一般式（Ｌ）におけるＺ^Ｌ２と同じ意味を表し、Ｘ^Ｌ７１及びＸ^Ｌ７２はそれぞれ独立してフッ素原子又は水素原子を表す。） 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 (L), A ^L71 and A ^L72 each independently represent A ^L2 and has the same meaning as A ^L3 , but the hydrogen atoms on A ^L71 and A ^L72 may each independently be substituted with a fluorine atom, and Z ^L71 has the same meaning as Z ^L2 in general formula (L); ^XL71 and ^XL72 each independently represent a fluorine atom or a hydrogen atom.)

In the formula, R ^L71 and R ^L72 are each independently preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and A ^L71 and A ^L72 . are each independently preferably a 1,4-cyclohexylene group or a 1,4-phenylene group, 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.

In the composition of the present embodiment, the content of the compound represented by general formula (L-7) includes solubility at low temperature, transition temperature, electrical reliability, birefringence, process suitability, drip marks , image sticking, dielectric anisotropy, etc., should be adjusted as appropriate.

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

If a high Tni embodiment of the composition of the present embodiment 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, A small amount is preferred.

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).

で表される化合物からなる群より選ばれる化合物であってもよい。 The liquid crystal compound has the following formula (N-1), (N-2), (N-3) or (N-4):

It may be a compound selected from the group consisting of compounds represented by.

In formulas (N-1), (N-2), (N-3) and (N-4),
R ^N11 , R ^N12 , R ^N21 , R ^N22 , R ^N31 , R ^N32 , R ^N41 and R ^N42 each independently represent an alkyl group having 1 to 8 carbon atoms, and one or two or more —CH ₂ — that are not adjacent are each independently substituted with —CH═CH—, —C≡C—, —O—, —CO—, —COO— or —OCO—; may be
A ^N11 , A ^N12 , A ^N21 , A ^N22 , A ^N31 , A ^N32 , A ^N41 and A ^N42 are each independently
(a) 1,4-cyclohexylene group (one -CH ₂ - present in this group or two or more non-adjacent -CH ₂ - may be substituted with -O-); ,
(b) a 1,4-phenylene group (one -CH= or two or more non-adjacent -CH= present in this group may be substituted with -N=),
(c) naphthalene-2,6-diyl group, 1,2,3,4-tetrahydronaphthalene-2,6-diyl group or decahydronaphthalene-2,6-diyl group (naphthalene-2,6-diyl group or One -CH= or two or more non-adjacent -CH= present in the 1,2,3,4-tetrahydronaphthalene-2,6-diyl group may be substituted with -N= ) and (d) represents a group selected from the group consisting of 1,4-cyclohexenylene groups, and the hydrogen atoms in group (a), group (b), group (c) and group (d) are each independently optionally substituted with a cyano group, a fluorine atom or a chlorine atom,
Z ^N11 , Z ^N12 , Z ^N21 , Z ^N22 , Z ^N31 , Z ^N32 , Z ^N41 and Z ^N42 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 represents -C≡C-,
X ^N21 represents a hydrogen atom or a fluorine atom,
T ^N31 represents —CH ₂ — or an oxygen atom,
X ^N41 represents an oxygen atom, a nitrogen atom, or —CH ₂ —;
Y ^N41 represents a single bond or —CH ₂ —;
n ^N11 , n ^N12 , n ^N21 , n ^N22 , n ^N31 , n ^N32 , n ^N41 and n ^N42 each independently represent an integer of 0 to 3, but n ^N11 +n ^N12 , n ^N21 + n ^N22 and n ^N31 +n ^N32 are each independently 1, 2 or 3, and when there are a plurality of A ^N11 to A ^N32 and Z ^N11 to Z ^N32 , they may be the same or different, n ^N41 +n ^N42 represents an integer of 0 to 3, and when there are a plurality of each of A ^N41 , A ^N42 , Z ^N41 and Z ^N42 , they may be the same or different.
However, the compound represented by the above general formula (L) is excluded.

The compound represented by any one of the general formulas (N-1), (N-2) and (N-3) preferably has a negative Δε and an absolute value of 3 or more.

In general formulas (N-1), (N-2) and (N-3), R ^N11 , R ^N12 , R ^N21 , R ^N22 , R ^N31 and R ^N32 each independently has 1 to 8 carbon atoms; is preferably an alkyl group having 1 to 8 carbon atoms, an alkoxy group having 1 to 8 carbon atoms, an alkenyl group having 2 to 8 carbon atoms or an alkenyloxy group having 2 to 8 carbon atoms, an alkyl group having 1 to 5 carbon atoms, and a number of carbon atoms An alkoxy group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkenyloxy group having 2 to 5 carbon atoms is preferable, and an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms is preferable. An alkyl group having 2 to 5 carbon atoms or an alkenyl group having 2 to 3 carbon atoms is more preferable, and an alkenyl group having 3 carbon atoms (propenyl group) is particularly preferable.

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) (black dots in each formula represent bonds).

を表すことがより好ましく、トランス－１，４－シクロへキシレン基、１，４－シクロヘキセニレン基又は１，４－フェニレン基を表すことがより好ましい。 A ^N11 , A ^N12 , A ^N21 , A ^N22 , A ^N31 and A ^N32 are preferably aromatic when it is required to independently increase Δn, and are fatty in order to improve the response speed. trans-1,4-cyclohexylene group, 1,4-phenylene group, 2-fluoro-1,4-phenylene group, 3-fluoro-1,4-phenylene group, 3,5 -difluoro-1,4-phenylene group, 2,3-difluoro-1,4-phenylene group, 1,4-cyclohexenylene group, 1,4-bicyclo[2.2.2]octylene group, piperidine-1 ,4-diyl group, naphthalene-2,6-diyl group, decahydronaphthalene-2,6-diyl group or 1,2,3,4-tetrahydronaphthalene-2,6-diyl group. Structure of :

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

Z ^N11 , Z ^N12 , Z ^N21 , Z ^N22 , Z ^N31 and Z ^N32 are each independently -CH ₂ O-, -CF ₂ O-, -CH ₂ CH ₂ -, -CF ₂ CF ₂ - or a single bond; is preferred, —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.

X ^N21 is preferably a fluorine atom.

^TN31 is preferably an oxygen atom.

^nN11 + ^nN12 , ^nN21 + ^nN22 and ^nN31 + ^nN32 are preferably 1 or 2, n a combination where ^nN11 is 1 and ^nN12 is 0, n a combination where ^nN11 is 2 and ^nN12 is 0, n combinations where ^N11 is 1 and ^nN12 is 1, combinations where ^nN11 is 2 and ^nN12 is 1, combinations where ^nN21 is 1 and ^nN22 is 0, ^nN21 is 2 and ^nN22 is A combination of 0, a combination of ^nN31 of 1 and ^nN32 of 0, and a combination of ^nN31 of 2 and ^nN32 of 0 are preferred.

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

The lower limit of the preferable content of the compound represented by formula (N-2) with respect to the total amount of the composition of the present embodiment is 1% by mass or more, 10% by mass or more, and 20% by mass or more. is 30% by mass or more, 40% by mass or more, 50% by mass or more, 55% by mass or more, 60% by mass or more, 65% by mass or more, and 70% by mass or more Yes, 75% by mass or more, and 80% by mass or more. The upper limit of the preferred content is 95% by mass or less, 85% by mass or less, 75% by mass or less, 65% by mass or less, 55% by mass or less, and 45% by mass or less, It is 35% by mass or less, 25% by mass or less, and 20% by mass or less.

The lower limit of the preferable content of the compound represented by formula (N-3) with respect to the total amount of the composition of the present embodiment is 1% by mass or more, 10% by mass or more, and 20% by mass or more. is 30% by mass or more, 40% by mass or more, 50% by mass or more, 55% by mass or more, 60% by mass or more, 65% by mass or more, and 70% by mass or more Yes, 75% by mass or more, and 80% by mass or more. The upper limit of the preferred content is 95% by mass or less, 85% by mass or less, 75% by mass or less, 65% by mass or less, 55% by mass or less, and 45% by mass or less, It is 35% by mass or less, 25% by mass or less, and 20% by mass or less.

When the viscosity of the composition of the present embodiment is kept low and a composition with a high response speed is required, it is preferable that the above lower limit value is low and the upper limit value is low. Furthermore, when the Tni of the composition of the present embodiment is kept high and a composition with good temperature stability is required, it is preferable that the above lower limit is low and the upper limit 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.

（式中、Ｒ^Ｎ１１及びＲ^Ｎ１２は一般式（Ｎ－１）におけるＲ^Ｎ１１及びＲ^Ｎ１２と同じ意味を表し、ｎ^Ｎａ１１は０又は１を表し、ｎ^Ｎｂ１１は０又は１を表し、ｎ^Ｎｃ１１は０又は１を表し、ｎ^Ｎｄ１１は０又は１を表し、ｎ^Ｎｅ１１は１又は２を表し、ｎ^Ｎｆ１１は１又は２を表し、ｎ^Ｎｇ１１は１又は２を表し、Ａ^Ｎｅ１１はトランス－１，４－シクロへキシレン基又は１，４－フェニレン基を表し、Ａ^Ｎｇ１１はトランス－１，４－シクロへキシレン基、１，４－シクロヘキセニレン基又は１，４－フェニレン基を表すが少なくとも１つは１，４－シクロヘキセニレン基を表し、Ｚ^Ｎｅ１１は単結合又はエチレンを表すが少なくとも１つはエチレンを表す。） Examples of the compound represented by the general formula (N-1) 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 (N-1), n ^Na11 represents 0 or 1, n ^Nb11 represents 0 or 1, and n ^Nc11 represents represents 0 or 1, n ^Nd11 represents 0 or 1, n ^Ne11 represents 1 or 2, n ^Nf11 represents 1 or 2, n ^Ng11 represents 1 or 2, A ^Ne11 represents 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 represents ethylene.)

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

（式中、Ｒ^Ｎ１１１及びＲ^Ｎ１１２はそれぞれ独立して、一般式（Ｎ）におけるＲ^Ｎ１１及びＲ^Ｎ１２と同じ意味を表す。） The compound represented by general formula (N-1-1) is the following compound.

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

R ^N111 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, 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.

When emphasizing the improvement of Δε, it is preferable to set the content higher, when emphasizing the _solubility at low temperatures, setting the content a little higher is more effective, It is effective when set to a small value. 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 (N-1-1) with respect to the total amount of the composition of the present embodiment is 5% by mass or more, 10% by mass or more, and 13% by mass. % or more, 15% by mass or more, 17% by mass or more, 20% by mass or more, 23% by mass or more, 25% by mass or more, 27% by mass or more, 30% by mass 33% by mass or more, and 35% by mass or more. The upper limit of the preferable content is 50% by mass or less, 40% by mass or less, 38% by mass or less, 35% by mass or less, and 33% by mass with respect to the total amount of the composition of the present embodiment. % or less, 30% by mass or less, 28% by mass or less, 25% by mass or less, 23% by mass or less, 20% by mass or less, 18% by mass or less, 15% by mass or less, 13% by mass or less, 10% by mass or less, 8% by mass or less, 7% by mass or less, 6% by mass or less, 5% by mass or less, and 3% by mass or less is.

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-1-1.23). 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-1-1.22) can be used alone or in combination, but the composition of the present embodiment The lower limit of the preferred content of these compounds alone or these compounds with respect to the total amount is 5% by mass or more, 10% by mass or more, 13% by mass or more, 15% by mass or more, 17% by mass 20% by mass or more, 23% by mass or more, 25% by mass or more, 27% by mass or more, 30% by mass or more, 33% by mass or more, 35% by mass or more is. The upper limit of the preferable content is 50% by mass or less, 40% by mass or less, 38% by mass or less, 35% by mass or less, and 33% by mass with respect to the total amount of the composition of the present embodiment. % or less, 30% by mass or less, 28% by mass or less, 25% by mass or less, 23% by mass or less, 20% by mass or less, 18% by mass or less, 15% by mass or less, 13% by mass or less, 10% by mass or less, 8% by mass or less, 7% by mass or less, 6% by mass or less, 5% by mass or less, and 3% by mass or less is.

（式中、Ｒ^Ｎ１２１及びＲ^Ｎ１２２はそれぞれ独立して、一般式（Ｎ）におけるＲ^Ｎ１１及びＲ^Ｎ１２と同じ意味を表す。） The compound represented by general formula (N-1-2) is the following compound.

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

R ^N121 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, 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 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.

When emphasizing the improvement of _Δε , it is preferable to set the content higher. The effect is high when set to a large amount. 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 (N-1-2) with respect to the total amount of the composition of the present embodiment is 5% by mass or more, 7% by mass or more, and 10% by mass. % or more, 13 mass% or more, 15 mass% or more, 17 mass% or more, 20 mass% or more, 23 mass% or more, 25 mass% or more, 27 mass% 30% by mass or more, 33% by mass or more, 35% by mass or more, 37% by mass or more, 40% by mass or more, and 42% by mass or more. The upper limit of the preferable content is 50% by mass or less, 48% by mass or less, 45% by mass or less, 43% by mass or less, and 40% by mass with respect to the total amount of the composition of the present embodiment. % or less, 38% by mass or less, 35% by mass or less, 33% by mass or less, 30% by mass or less, 28% by mass or less, 25% by mass or less, 23% by mass or less, 20% by mass or less, 18% by mass or less, 15% by mass or less, 13% by mass or less, 10% by mass or less, 8% by mass or less, and 7% by mass or less , 6% by mass or less, and 5% by mass or less.

Further, the compound represented by general formula (N-1-2) is a compound selected from the group of compounds represented by formulas (N-1-2.1) to (N-1-2.22). Preferably, there are formulas (N-1-2.3) to formulas (N-1-2.7), formulas (N-1-2.10), formulas (N-1-2.11), formulas Compounds represented by (N-1-2.13) and formula (N-1-2.20) are preferable, and when emphasis is placed on improving Δε, formula (N-1-2.3) A compound represented by the formula (N- _1-2.7 ) is preferable, and when emphasizing the improvement of TNI, the formula (N-1-2.10), the formula (N-1-2.11) And it is preferably a compound represented by formula (N-1-2.13), and when emphasis is placed on improving the response speed, it is a compound represented by formula (N-1-2.20) is preferred.

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

（式中、Ｒ^Ｎ１３１及びＲ^Ｎ１３２はそれぞれ独立して、一般式（Ｎ）におけるＲ^Ｎ１１及びＲ^Ｎ１２と同じ意味を表す。） The compound represented by general formula (N-1-3) is the following compound.

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

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

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.

When emphasizing the improvement of Δε, it is preferable to set the content higher, when emphasizing the _solubility at low temperatures, setting the content a little higher is more effective, It is highly effective when set roughly. 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 (N-1-3) with respect to the total amount of the composition of the present embodiment is 5% by mass or more, 10% by mass or more, and 13% by mass. % or more, 15 mass % or more, 17 mass % or more, and 20 mass % or more. The upper limit of the preferable content is 35% by mass or less, 30% by mass or less, 28% by mass or less, 25% by mass or less, and 23% by mass with respect to the total amount of the composition of the present embodiment. %, 20% by mass or less, 18% by mass or less, 15% by mass or less, and 13% by mass or less.

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), formula (N-1-3.2), formula (N-1-3.3), formula (N-1-3.4) and formula (N-1-3.6 ) are preferred.

Compounds represented by formulas (N-1-3.1) to (N-1-3.4), formula (N-1-3.6) and formula (N-1-3.21) are alone can be used in combination, but the combination of formula (N-1-3.1) and formula (N-1-3.2), formula (N-1-3.3 ), formulas (N-1-3.4) and formulas (N-1-3.6). The lower limit of the preferable content of these compounds alone or these compounds with respect to the total amount of the composition of the present embodiment is 5% by mass or more, 10% by mass or more, 13% by mass or more, and 15% by mass or more. , 17% by mass or more, and 20% by mass or more. The upper limit of the preferable content is 35% by mass or less, 30% by mass or less, 28% by mass or less, 25% by mass or less, and 23% by mass with respect to the total amount of the composition of the present embodiment. %, 20% by mass or less, 18% by mass or less, 15% by mass or less, and 13% by mass or less.

（式中、Ｒ^Ｎ１４１及びＲ^Ｎ１４２はそれぞれ独立して、一般式（Ｎ）におけるＲ^Ｎ１１及びＲ^Ｎ１２と同じ意味を表す。） 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 and R ^N12 in general formula (N).)

R ^N141 and R ^N142 are each independently preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and are preferably methyl, propyl, ethoxy or butoxy groups are preferred.

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.

When emphasizing the improvement of Δε, it is preferable to set the content higher, when emphasizing the _solubility at low temperatures, setting the content a little higher is more effective, It is effective when set to a small value. 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 (N-1-4) with respect to the total amount of the composition of the present embodiment is 3% by mass or more, 5% by mass or more, and 7% by mass. % or more, 10 mass % or more, 13 mass % or more, 15 mass % or more, 17 mass % or more, and 20 mass % or more. The upper limit of the preferable content is 35% by mass or less, 30% by mass or less, 28% by mass or less, 25% by mass or less, and 23% by mass with respect to the total amount of the composition of the present embodiment. % or less, 20% by mass or less, 18% by mass or less, 15% by mass or less, 13% by mass or less, 11% by mass or less, 10% by mass or less, 8% by mass It is below.

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-1-4.14). is preferably a compound represented by formula (N-1-4.1) ~ (N-1-4.4), formula (N-1-4.1), formula (N -1-4.2) and compounds represented by formula (N-1-4.4) are preferred.

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

（式中、Ｒ^Ｎ１５１及びＲ^Ｎ１５２はそれぞれ独立して、一般式（Ｎ）におけるＲ^Ｎ１１及びＲ^Ｎ１２と同じ意味を表す。） The compound represented by general formula (N-1-5) is the following compound.

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

R ^N151 and R ^N152 are each independently an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, preferably an ethyl group, a propyl group or a butyl group. is preferred.

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.

When emphasizing the improvement of _Δε , it is preferable to set the content higher. The effect is high when set to a large amount. 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 (N-1-5) with respect to the total amount of the composition of the present embodiment is 5% by mass or more, 8% by mass or more, and 10% by mass. % or more, 13 mass % or more, 15 mass % or more, 17 mass % or more, and 20 mass % or more. The upper limit of the preferable content is 35% by mass or less, 33% by mass or less, 30% by mass or less, 28% by mass or less, and 25% by mass with respect to the total amount of the composition of the present embodiment. % or less, 23 mass % or less, 20 mass % or less, 18 mass % or less, 15 mass % or less, and 13 mass % or less.

Furthermore, 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-1-5.6). are preferred, and compounds represented by formulas (N-1-5.1), (N-1-5.2) and (N-1-5.4) are preferred.

Compounds represented by formula (N-1-5.1), formula (N-1-5.2) and formula (N-1-5.4) can be used alone or in combination is also possible, but the lower limit of the preferred content of these compounds alone or these compounds with respect to the total amount of the composition of the present embodiment is 5% by mass or more, 8% by mass or more, and 10% by mass or more. 13% by mass or more, 15% by mass or more, 17% by mass or more, and 20% by mass or more. The upper limit of the preferable content is 35% by mass or less, 33% by mass or less, 30% by mass or less, 28% by mass or less, and 25% by mass with respect to the total amount of the composition of the present embodiment. % or less, 23 mass % or less, 20 mass % or less, 18 mass % or less, 15 mass % or less, and 13 mass % or less.

（式中、Ｒ^{Ｎ１１０１}及びＲ^{Ｎ１１０２}はそれぞれ独立して、一般式（Ｎ）におけるＲ^Ｎ１１及びＲ^Ｎ１２と同じ意味を表す。） 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 and R ^N12 in general formula (N).)

R ^N1101 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably an ethyl group, a propyl group, a butyl group, a vinyl group or a 1-propenyl group. R ¹¹⁰² 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 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 types or more as one embodiment of the present embodiment.

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

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

Compounds represented by formula (N-1-10.1), formula (N-1-10.2), formula (N-1-10.20) and formula (N-1-10.21) are It is also possible to use it in combination, but the lower limit of the preferable content of these compounds alone or with respect to the total amount of the composition of the present embodiment is 5% by mass or more, and 10 % by mass or more, 13% by mass or more, 15% by mass or more, 17% by mass or more, and 20% by mass or more. The upper limit of the preferable content is 35% by mass or less, 30% by mass or less, 28% by mass or less, 25% by mass or less, and 23% by mass with respect to the total amount of the composition of the present embodiment. %, 20% by mass or less, 18% by mass or less, 15% by mass or less, and 13% by mass or less.

（式中、Ｒ^{Ｎ１１１１}及びＲ^{Ｎ１１１２}はそれぞれ独立して、一般式（Ｎ）におけるＲ^Ｎ１１及びＲ^Ｎ１２と同じ意味を表す。） The compound represented by general formula (N-1-11) is the following compound.

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

R ^N1111 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably an ethyl group, a propyl group, a butyl group, a vinyl group or a 1-propenyl group. R ^N1112 is preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and preferably an ethoxy group, a propoxy group or a butoxy group.

The 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.

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

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-1-11.15). is preferably a compound represented by formula (N-1-11.1) ~ (N-1-11.15), formula (N-1-11.2 and formula (N- 1-11.4) are preferred.

The compounds represented by formulas (N-1-11.2) and (N-1-11.4) can be used alone or in combination, but the composition of the present embodiment The lower limit of the content of these compounds alone or preferably with respect to the total amount of the product is 5% by mass or more, 10% by mass or more, 13% by mass or more, 15% by mass or more, and 17% by mass. % or more and 20% by mass or more. The upper limit of the preferable content is 35% by mass or less, 30% by mass or less, 28% by mass or less, 25% by mass or less, and 23% by mass with respect to the total amount of the composition of the present embodiment. %, 20% by mass or less, 18% by mass or less, 15% by mass or less, and 13% by mass or less.

（式中、Ｒ^{Ｎ１１２１}及びＲ^{Ｎ１１２２}はそれぞれ独立して、一般式（Ｎ）におけるＲ^Ｎ１１及びＲ^Ｎ１２と同じ意味を表す。） The compound represented by general formula (N-1-12) is the following compound.

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

R ^N1121 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, 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.

When emphasizing the improvement of Δε, it is preferable to set the content higher, when emphasizing the _solubility at low temperatures, setting the content a little higher is more effective, It is highly effective when set roughly. 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 (N-1-12) with respect to the total amount of the composition of the present embodiment is 5% by mass or more, 10% by mass or more, and 13% by mass. % or more, 15 mass % or more, 17 mass % or more, and 20 mass % or more. The upper limit of the preferable content is 35% by mass or less, 30% by mass or less, 28% by mass or less, 25% by mass or less, and 23% by mass with respect to the total amount of the composition of the present embodiment. %, 20% by mass or less, 18% by mass or less, 15% by mass or less, and 13% by mass or less.

（式中、Ｒ^{Ｎ１１３１}及びＲ^{Ｎ１１３２}はそれぞれ独立して、一般式（Ｎ）におけるＲ^Ｎ１１及びＲ^Ｎ１２と同じ意味を表す。） The compound represented by general formula (N-1-13) is the following compound.

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

R ^N1131 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably an ethyl group, a propyl group or a butyl group. R ¹¹³² 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 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.

When emphasizing the improvement of Δε, it is preferable to set the content higher, when emphasizing the _solubility at low temperatures, setting the content a little higher is more effective, It is highly effective when set roughly. 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 (N-1-13) with respect to the total amount of the composition of the present embodiment is 5% by mass or more, 10% by mass or more, and 13% by mass. % or more, 15 mass % or more, 17 mass % or more, and 20 mass % or more. The upper limit of the preferable content is 35% by mass or less, 30% by mass or less, 28% by mass or less, 25% by mass or less, and 23% by mass with respect to the total amount of the composition of the present embodiment. %, 20% by mass or less, 18% by mass or less, 15% by mass or less, and 13% by mass or less.

（式中、Ｒ^{Ｎ１１４１}及びＲ^{Ｎ１１４２}はそれぞれ独立して、一般式（Ｎ）におけるＲ^Ｎ１１及びＲ^Ｎ１２と同じ意味を表す。） The compound represented by general formula (N-1-14) is the following compound.

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

R ^N1141 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably an ethyl group, a propyl group or a butyl group. R ¹¹⁴² 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 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 types or more as one embodiment of the present embodiment.

When emphasizing the improvement of Δε, it is preferable to set the content higher, when emphasizing the _solubility at low temperatures, setting the content a little higher is more effective, It is highly effective when set roughly. 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 (N-1-14) with respect to the total amount of the composition of the present embodiment is 5% by mass or more, 10% by mass or more, and 13% by mass. % or more, 15 mass % or more, 17 mass % or more, and 20 mass % or more. The upper limit of the preferable content is 35% by mass or less, 30% by mass or less, 28% by mass or less, 25% by mass or less, and 23% by mass with respect to the total amount of the composition of the present embodiment. %, 20% by mass or less, 18% by mass or less, 15% by mass or less, and 13% by mass or less.

（式中、Ｒ^{Ｎ１１５１}及びＲ^{Ｎ１１５２}はそれぞれ独立して、一般式（Ｎ）におけるＲ^Ｎ１１及びＲ^Ｎ１２と同じ意味を表す。） The compound represented by general formula (N-1-15) is the following compound.

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

R ^N1151 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably an ethyl group, a propyl group or a butyl group. R ¹¹⁵² 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-1-15) 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.

When emphasizing the improvement of _Δε , it is preferable to set the content higher. It is highly effective when set roughly. 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 (N-1-15) with respect to the total amount of the composition of the present embodiment is 5% by mass or more, 10% by mass or more, and 13% by mass. % or more, 15 mass % or more, 17 mass % or more, and 20 mass % or more. The upper limit of the preferable content is 35% by mass or less, 30% by mass or less, 28% by mass or less, 25% by mass or less, and 23% by mass with respect to the total amount of the composition of the present embodiment. %, 20% by mass or less, 18% by mass or less, 15% by mass or less, and 13% by mass or less.

（式中、Ｒ^{Ｎ１１６１}及びＲ^{Ｎ１１６２}はそれぞれ独立して、一般式（Ｎ）におけるＲ^Ｎ１１及びＲ^Ｎ１２と同じ意味を表す。） The compound represented by general formula (N-1-16) is the following compound.

(In the formula, R ^N1161 and R ^N1162 each independently have the same meaning as R ^N11 and R ^N12 in general formula (N).)

R ^N1161 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably an ethyl group, a propyl group or a butyl group. R ¹¹⁶² 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-1-16) 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.

When emphasizing the improvement of Δε, it is preferable to set the content higher, when emphasizing the _solubility at low temperatures, setting the content a little higher is more effective, It is highly effective when set roughly. 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 (N-1-16) with respect to the total amount of the composition of the present embodiment is 5% by mass or more, 10% by mass or more, and 13% by mass. % or more, 15 mass % or more, 17 mass % or more, and 20 mass % or more. The upper limit of the preferable content is 35% by mass or less, 30% by mass or less, 28% by mass or less, 25% by mass or less, and 23% by mass with respect to the total amount of the composition of the present embodiment. %, 20% by mass or less, 18% by mass or less, 15% by mass or less, and 13% by mass or less.

（式中、Ｒ^{Ｎ１１７１}及びＲ^{Ｎ１１７２}はそれぞれ独立して、一般式（Ｎ）におけるＲ^Ｎ１１及びＲ^Ｎ１２と同じ意味を表す。） The compound represented by general formula (N-1-17) is the following compound.

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

R ^N1171 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably an ethyl group, a propyl group or a butyl group. R ¹¹⁷² 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 compounds represented by general formula (N-1-17) 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.

When emphasizing the improvement of Δε, it is preferable to set the content higher, when emphasizing the _solubility at low temperatures, setting the content a little higher is more effective, It is highly effective when set roughly. 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 (N-1-17) with respect to the total amount of the composition of the present embodiment is 5% by mass or more, 10% by mass or more, and 13% by mass. % or more, 15 mass % or more, 17 mass % or more, and 20 mass % or more. The upper limit of the preferable content is 35% by mass or less, 30% by mass or less, 28% by mass or less, 25% by mass or less, and 23% by mass with respect to the total amount of the composition of the present embodiment. %, 20% by mass or less, 18% by mass or less, 15% by mass or less, and 13% by mass or less.

（式中、Ｒ^{Ｎ１１８１}及びＲ^{Ｎ１１８２}はそれぞれ独立して、一般式（Ｎ）におけるＲ^Ｎ１１及びＲ^Ｎ１２と同じ意味を表す。） The compound represented by general formula (N-1-18) is the following compound.

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

R ^N1181 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably a methyl group, an ethyl group, a propyl group or a butyl group. R ¹¹⁸² 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-1-18) 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.

When emphasizing the improvement of Δε, it is preferable to set the content higher, when emphasizing the _solubility at low temperatures, setting the content a little higher is more effective, It is highly effective when set roughly. 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 (N-1-18) with respect to the total amount of the composition of the present embodiment is 5% by mass or more, 10% by mass or more, and 13% by mass. % or more, 15 mass % or more, 17 mass % or more, and 20 mass % or more. The upper limit of the preferable content is 35% by mass or less, 30% by mass or less, 28% by mass or less, 25% by mass or less, and 23% by mass with respect to the total amount of the composition of the present embodiment. %, 20% by mass or less, 18% by mass or less, 15% by mass or less, and 13% by mass or less.

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

（式中、Ｒ^{Ｎ１２０１}及びＲ^{Ｎ１２０２}はそれぞれ独立して、一般式（Ｎ）におけるＲ^Ｎ１１及びＲ^Ｎ１２と同じ意味を表す。） The compound represented by general formula (N-1-20) is the following compound.

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

R ^N1201 and R ^N1202 are each independently preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, 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.

When emphasizing the improvement of Δε, it is preferable to set the content higher, when emphasizing the _solubility at low temperatures, setting the content a little higher is more effective, It is highly effective when set roughly. 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 (N-1-20) with respect to the total amount of the composition of the present embodiment is 5% by mass or more, 10% by mass or more, and 13% by mass. % or more, 15 mass % or more, 17 mass % or more, and 20 mass % or more. The upper limit of the preferable content is 35% by mass or less, 30% by mass or less, 28% by mass or less, 25% by mass or less, and 23% by mass with respect to the total amount of the composition of the present embodiment. %, 20% by mass or less, 18% by mass or less, 15% by mass or less, and 13% by mass or less.

（式中、Ｒ^{Ｎ１２１１}及びＲ^{Ｎ１２１２}はそれぞれ独立して、一般式（Ｎ）におけるＲ^Ｎ１１及びＲ^Ｎ１２と同じ意味を表す。） The compound represented by general formula (N-1-21) is the following compound.

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

R ^N1211 and R ^N1212 are each independently preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, 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.

When emphasizing the improvement of Δε, it is preferable to set the content higher, when emphasizing the _solubility at low temperatures, setting the content a little higher is more effective, It is highly effective when set roughly. 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 (N-1-21) with respect to the total amount of the composition of the present embodiment is 5% by mass or more, 10% by mass or more, and 13% by mass. % or more, 15 mass % or more, 17 mass % or more, and 20 mass % or more. The upper limit of the preferable content is 35% by mass or less, 30% by mass or less, 28% by mass or less, 25% by mass or less, and 23% by mass with respect to the total amount of the composition of the present embodiment. %, 20% by mass or less, 18% by mass or less, 15% by mass or less, and 13% by mass or less.

（式中、Ｒ^{Ｎ１２２１}及びＲ^{Ｎ１２２２}はそれぞれ独立して、一般式（Ｎ）におけるＲ^Ｎ１１及びＲ^Ｎ１２と同じ意味を表す。） The compound represented by general formula (N-1-22) is the following compound.

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

R ¹²²¹ and R ¹²²² 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-1-22) 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.

When emphasizing the improvement of Δε, it is preferable to set the content higher, when emphasizing the _solubility at low temperatures, setting the content a little higher is more effective, It is highly effective when set roughly. 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 (N-1-21) with respect to the total amount of the composition of the present embodiment is 1% by mass or more, 5% by mass or more, and 10% by mass. % or more, 13 mass % or more, 15 mass % or more, 17 mass % or more, and 20 mass % or more. The upper limit of the preferable content is 35% by mass or less, 30% by mass or less, 28% by mass or less, 25% by mass or less, and 23% by mass with respect to the total amount of the composition of the present embodiment. %, 20% by mass or less, 18% by mass or less, 15% by mass or less, 13% by mass or less, 10% by mass or less, and 5% by mass or less.

Furthermore, the compound represented by general formula (N-1-22) is a compound selected from the group of compounds represented by formulas (N-1-22.1) to (N-1-22.12). is preferably a compound represented by the formula (N-1-22.1) ~ (N-1-22.5), the formula (N-1-22.1) ~ (N- 1-22.4) are preferred.

（式中、Ｒ^Ｎ３２１及びＲ^Ｎ３２２はそれぞれ独立して、一般式（Ｎ）におけるＲ^Ｎ１１及びＲ^Ｎ１２と同じ意味を表す。） The compound represented by general formula (N-3) is preferably a compound selected from the group of compounds represented by general formula (N-3-2).

(In the formula, R ^N321 and R ^N322 each independently have the same meaning as R ^N11 and R ^N12 in general formula (N).)

R ³²¹ and R ³²² are preferably alkyl groups having 1 to 5 carbon atoms or alkenyl groups having 2 to 5 carbon atoms, and preferably propyl or pentyl groups.

The compound represented by general formula (N-3-2) 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.

When emphasizing the improvement of Δε, it is preferable to set the content higher, when emphasizing the _solubility at low temperatures, setting the content a little higher is more effective, It is effective when set to a small value. 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 (N-3-2) with respect to the total amount of the composition of the present embodiment is 3% by mass or more, 5% by mass or more, and 10% by mass. % or more, 13 mass% or more, 15 mass% or more, 17 mass% or more, 20 mass% or more, 23 mass% or more, 25 mass% or more, 27 mass% 30% by mass or more, 33% by mass or more, and 35% by mass or more. The upper limit of the preferable content is 50% by mass or less, 40% by mass or less, 38% by mass or less, 35% by mass or less, and 33% by mass with respect to the total amount of the composition of the present embodiment. % or less, 30% by mass or less, 28% by mass or less, 25% by mass or less, 23% by mass or less, 20% by mass or less, 18% by mass or less, 15% by mass 13% by mass or less, 10% by mass or less, 8% by mass or less, 7% by mass or less, 6% by mass or less, and 5% by mass or less.

Furthermore, the compound represented by general formula (N-3-2) is a compound selected from the group of compounds represented by formulas (N-3-2.1) to (N-3-2.3). Preferably.

（式中、Ｒ^Ｎ４１及びＲ^Ｎ４２はそれぞれ独立して炭素原子数１～８のアルキル基を表すが、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－又は－ＯＣＯ－によって置換されていてもよい。） The compound represented by the above general formula (N-4) is preferably a compound represented by the following general formula (N-4-1).

(In the formula, R 1 ^N41 and R 1 ^N42 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 may be substituted by -CH=CH-, -C≡C-, -O-, -CO-, -COO- or -OCO-.)

In general formula (N-4-1), R ^N41 and R ^N42 are each independently one or two or more non-adjacent —CH ₂ — are each independently —O—, —COO— or — It preferably represents an alkyl group having 1 to 8 carbon atoms which may be substituted by OCO—, preferably an alkyl group having 1 to 8 carbon atoms or an alkoxy group. An alkoxy group is preferred in order to exhibit particularly excellent dielectric anisotropy.

The compound represented by general formula (N-4-1) is specifically selected from the group of compounds represented by formulas (N-4-1.1) to (N-4-1.9). It is preferably a compound represented by formula (N-4-1.1) to formula (N-4-1.5), preferably a compound selected from the group of compounds represented by formula (N-4 -1.3) is preferred. The compounds represented by formulas (N-4-1.1) to (N-4-1.9) are preferably used in combination of two or more from the viewpoint of improving the low-temperature storage stability of the liquid crystal composition. .

で表される化合物からなる群より選ばれる化合物であってもよい。上記式（Ｊ）で表される化合物は、誘電的に正の化合物（Δεが２より大きい。）に該当する。 The liquid crystal compound has the following formula (J):

It may be a compound selected from the group consisting of compounds represented by. The compound represented by the above formula (J) corresponds to a dielectrically positive compound (Δε is greater than 2).

In the above formula (J),
R ^J1 represents an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent -CH ₂ - in the alkyl group are each independently -CH=CH-, - optionally substituted by C≡C-, -O-, -CO-, -COO- or -OCO-,
n ^J1 represents 0, 1, 2, 3 or 4;
A ^J1 , A ^J2 and A ^J3 are each independently
(a) 1,4-cyclohexylene group (one -CH ₂ - present in this group or two or more non-adjacent -CH ₂ - may be substituted with -O-); ,
(b) 1,4-phenylene group (one —CH= or two or more non-adjacent —CH= present in this group may be substituted with —N=) and (c ) naphthalene-2,6-diyl group, 1,2,3,4-tetrahydronaphthalene-2,6-diyl group or decahydronaphthalene-2,6-diyl group (naphthalene-2,6-diyl group or 1, One —CH= or two or more non-adjacent —CH= present in the 2,3,4-tetrahydronaphthalene-2,6-diyl group may be substituted with —N=.)
represents a group selected from the group consisting of, hydrogen atoms in the group (a), the group (b) and the group (c) are each independently a cyano group, a fluorine atom, a chlorine atom, a methyl group, a trifluoromethyl optionally substituted with a group or a trifluoromethoxy group,
Z ^J1 and Z ^J2 are each independently a single bond, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -OCF ₂ -, -CF ₂ O -, -COO-, -OCO- or -C≡C-,
When n ^J1 is 2, 3 or 4 and there are a plurality of A ^J2 , they may be the same or different, and when n ^J1 is 2, 3 or 4 and there are a plurality of Z ^J1 , they may be the same or different from each other, and
X ^J1 represents a hydrogen atom, a fluorine atom, a chlorine atom, a cyano group, a trifluoromethyl group, a fluoromethoxy group, a difluoromethoxy group, a trifluoromethoxy group or a 2,2,2-trifluoroethyl group.
However, the compound represented by the above general formula (L) is excluded.

（式中、Ｒ^Ｍ１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－又は－ＯＣＯ－によって置換されていてもよく、
ｎ^Ｍ１は、０、１、２、３又は４を表し、
Ａ^Ｍ１及びＡ^Ｍ２はそれぞれ独立して、
（ａ） １，４－シクロヘキシレン基（この基中に存在する１個の－ＣＨ_２－又は隣接していない２個以上の－ＣＨ_２－は－Ｏ－又は－Ｓ－に置き換えられてもよい。）及び
（ｂ） １，４－フェニレン基（この基中に存在する１個の－ＣＨ＝又は隣接していない２個以上の－ＣＨ＝は－Ｎ＝に置き換えられてもよい。）
からなる群より選ばれる基を表し、上記の基（ａ）及び基（ｂ）上の水素原子はそれぞれ独立してシアノ基、フッ素原子又は塩素原子で置換されていてもよく、
Ｚ^Ｍ１及びＺ^Ｍ２はそれぞれ独立して単結合、－ＣＨ_２ＣＨ_２－、－（ＣＨ_２）_４－、－ＯＣＨ_２－、－ＣＨ_２Ｏ－、－ＯＣＦ_２－、－ＣＦ_２Ｏ－、－ＣＯＯ－、－ＯＣＯ－又は－Ｃ≡Ｃ－を表し、
ｎ^Ｍ１が２、３又は４であってＡ^Ｍ２が複数存在する場合は、それらは同一であっても異なっていても良く、ｎ^Ｍ１が２、３又は４であってＺ^Ｍ１が複数存在する場合は、それらは同一であっても異なっていても良く、
Ｘ^Ｍ１及びＸ^Ｍ３はそれぞれ独立して水素原子、塩素原子又はフッ素原子を表し、
Ｘ^Ｍ２は、水素原子、フッ素原子、塩素原子、シアノ基、トリフルオロメチル基、フルオロメトキシ基、ジフルオロメトキシ基、トリフルオロメトキシ基又は２，２，２－トリフルオロエチル基を表す。）
上記一般式（Ｊ）で表される化合物は、以下の式（Ｍ－１）～（Ｍ－１８）で表される化合物であることが好ましい。

（上記式中、Ｘ^Ｍ１１～Ｘ^Ｍ１８６はそれぞれ独立して、水素原子又はフッ素原子を表し、Ｒ^Ｊ１～Ｒ^Ｊ１８１はそれぞれ独立し、炭素原子数１～５のアルキル基、炭素原子数２～５のアルケニル基又は炭素原子数１～４のアルコキシ基を表し、Ｘ^Ｊ１１～Ｘ^Ｊ１８１ははフッ素原子、塩素原子又はＯＣＦ_３を表し、
Ａ^Ｍ８１及びＡ^Ｍ８２はそれぞれ独立して、１，４－シクロヘキシレン基、１，４－フェニレン基又は

を表すが、１，４－フェニレン基上の水素原子はフッ素原子によって置換されていてもよく、Ｗ^Ｍ１０１～Ｗ^Ｍ１７２はそれぞれ独立して、－ＣＨ_２－又は－Ｏ－を表す。） The non-polymerizable liquid crystal compound preferably contains one or more compounds represented by the general formula (M) as the compound represented by the formula (J).

(In the formula, R ^M1 represents an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent —CH ₂ — in the alkyl group are each independently —CH═CH—, — optionally substituted by C≡C-, -O-, -CO-, -COO- or -OCO-,
n ^M1 represents 0, 1, 2, 3 or 4;
A ^M1 and A ^M2 are each independently
(a) 1,4-cyclohexylene group (one —CH ₂ — present in this group or two or more non-adjacent —CH ₂ — may be replaced with —O— or —S—; and (b) a 1,4-phenylene group (one —CH= or two or more non-adjacent —CH= present in this group may be replaced with —N=).
represents a group selected from the group consisting of, hydrogen atoms on the above groups (a) and (b) may be independently substituted with a cyano group, a fluorine atom or a chlorine atom,
Z ^M1 and Z ^M2 are each independently a single bond, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -OCF ₂ -, -CF ₂ O-, -COO-, -OCO- or -C≡C-,
When ^nM1 is 2, 3 or 4 and there are a plurality of A ^M2 , they may be the same or different, and ^nM1 is 2, 3 or 4 and there are a plurality of ^ZM1 they may be the same or different, and
X ^M1 and X ^M3 each independently represent a hydrogen atom, a chlorine atom or a fluorine atom;
^XM2 represents a hydrogen atom, a fluorine atom, a chlorine atom, a cyano group, a trifluoromethyl group, a fluoromethoxy group, a difluoromethoxy group, a trifluoromethoxy group or a 2,2,2-trifluoroethyl group. )
The compound represented by the general formula (J) is preferably a compound represented by the following formulas (M-1) to (M-18).

(In the above formula, X ^M11 to X ^M186 each independently represent a hydrogen atom or a fluorine atom; R ^J1 to R ^J181 each independently represent an alkyl group having 1 to 5 carbon atoms; represents an alkenyl group or an alkoxy group having 1 to 4 carbon atoms, and X ^J11 to X ^J181 represent a fluorine atom, a chlorine atom or OCF ₃ ,
A ^M81 and A ^M82 are each independently a 1,4-cyclohexylene group, a 1,4-phenylene group, or

However, the hydrogen atoms on the 1,4-phenylene group may be substituted with fluorine atoms, and W ^M101 to W ^M172 each independently represent —CH ₂ — or —O—. )

The compound represented by the general formula (J) is preferably a compound represented by the following formulas (K-1) to (K-6).

（式中、Ｒ^Ｋ１１は炭素原子数１～５のアルキル基、炭素原子数２～５のアルケニル基又は炭素原子数１～４のアルコキシ基を表し、Ｘ^Ｋ１１～Ｘ^Ｋ１４はそれぞれ独立して水素原子又はフッ素原子を表し、Ｙ^Ｋ１１はフッ素原子又はＯＣＦ_３を表す。）

(wherein R ^K11 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and X ^K11 to X ^K14 are each independently hydrogen represents an atom or a fluorine atom, and ^YK11 represents a fluorine atom or _OCF3 .)

（式中、Ｒ^Ｋ２１は炭素原子数１～５のアルキル基、炭素原子数２～５のアルケニル基又は炭素原子数１～４のアルコキシ基を表し、Ｘ^Ｋ２１～Ｘ^Ｋ２４はそれぞれ独立して水素原子又はフッ素原子を表し、Ｙ^Ｋ２１はフッ素原子又はＯＣＦ_３を表す。）

(wherein R ^K21 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and X ^K21 to X ^K24 are each independently hydrogen represents an atom or a fluorine atom, and ^YK21 represents a fluorine atom or _OCF3 .)

（式中、Ｒ^Ｋ３１は炭素原子数１～５のアルキル基、炭素原子数２～５のアルケニル基又は炭素原子数１～４のアルコキシ基を表し、Ｘ^Ｋ３１～Ｘ^Ｋ３６はそれぞれ独立して水素原子又はフッ素原子を表し、Ｙ^Ｋ３１はフッ素原子又はＯＣＦ_３を表す。）

(In the formula, R ^K31 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and X ^K31 to X ^K36 each independently represent a hydrogen represents an atom or a fluorine atom, and ^YK31 represents a fluorine atom or _OCF3 .)

（式中、Ｒ^Ｋ４１は炭素原子数１～５のアルキル基、炭素原子数２～５のアルケニル基又は炭素原子数１～４のアルコキシ基を表し、Ｘ^Ｋ４１～Ｘ^Ｋ４６はそれぞれ独立して水素原子又はフッ素原子を表し、Ｙ^Ｋ４１はフッ素原子又はＯＣＦ_３を表し、Ｚ^Ｋ４１は－ＯＣＨ_２－、－ＣＨ_２Ｏ－、－ＯＣＦ_２－又は－ＣＦ_２Ｏ－を表す。）

(Wherein, R ^K41 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and X ^K41 to X ^K46 each independently represent a hydrogen represents an atom or a fluorine atom, Y ^K41 represents a fluorine atom or OCF ₃ , and Z ^K41 represents -OCH ₂ -, -CH ₂ O-, -OCF ₂ - or -CF ₂ O-.)

（式中、Ｒ^Ｋ５１は炭素原子数１～５のアルキル基、炭素原子数２～５のアルケニル基又は炭素原子数１～４のアルコキシ基を表し、Ｘ^Ｋ５１～Ｘ^Ｋ５６はそれぞれ独立して水素原子又はフッ素原子を表し、Ｙ^Ｋ５１はフッ素原子又はＯＣＦ_３を表し、Ｚ^Ｋ５１は－ＯＣＨ_２－、－ＣＨ_２Ｏ－、－ＯＣＦ_２－又は－ＣＦ_２Ｏ－を表す。）

(Wherein, R ^K51 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and X ^K51 to X ^K56 each independently represent a hydrogen represents an atom or a fluorine atom, Y ^K51 represents a fluorine atom or OCF ₃ , and Z ^K51 represents -OCH ₂ -, -CH ₂ O-, -OCF ₂ - or -CF ₂ O-.)

（式中、Ｒ^Ｋ６１は炭素原子数１～５のアルキル基、炭素原子数２～５のアルケニル基又は炭素原子数１～４のアルコキシ基を表し、Ｘ^Ｋ６１～Ｘ^Ｋ６８はそれぞれ独立して水素原子又はフッ素原子を表し、Ｙ^Ｋ６１はフッ素原子又はＯＣＦ_３を表し、Ｚ^Ｋ６１は－ＯＣＨ_２－、－ＣＨ_２Ｏ－、－ＯＣＦ_２－又は－ＣＦ_２Ｏ－を表す。）

(Wherein, R ^K61 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and X ^K61 to X ^K68 each independently represent a hydrogen represents an atom or a fluorine atom, Y ^K61 represents a fluorine atom or OCF ₃ , and Z ^K61 represents -OCH ₂ -, -CH ₂ O-, -OCF ₂ - or -CF ₂ O-.)

（上記式中、Ｒ^Ｍはそれぞれ独立して、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個又は隣接していない２個以上の－ＣＨ_２－は、それぞれ独立して、－ＣＨ＝ＣＨ－、－Ｃ≡Ｃ－、－Ｏ－、－ＣＯ－、－ＣＯＯ－又は－ＯＣＯ－によって置換されていてもよい。） Specifically, the compound represented by the general formula (M) is a compound selected from the group of compounds represented by the following formulas (M-1.1) to (M-5.1). is preferred. These compounds are preferably used in combination of two or more from the viewpoint of improving the response speed of the liquid crystal composition while maintaining storage stability.

(In the above formula, each R 1 ^M independently represents an alkyl group having 1 to 8 carbon atoms, and one or more non-adjacent -CH ₂ - in the alkyl group each independently may be substituted by -CH=CH-, -C≡C-, -O-, -CO-, -COO- or -OCO-.)

The liquid crystal layer 4 may contain a hindered phenol compound. The hindered phenol compound may be a compound corresponding to the hindered amine compound described above (that is, a compound having both a hindered amine structure (skeleton) and a hindered phenol structure (skeleton)), and a compound that does not correspond to the hindered amine compound described above. (That is, it may be a compound that does not have a hindered amine structure (skeleton) but has a hindered phenol structure (skeleton)).

EXAMPLES The present invention will be described in more detail based on examples below, but the present invention is not limited to the following examples.

Compositions having liquid crystal compositions A to F (unit: % by mass) shown in Tables 1 to 3 and hindered amine compounds shown in Table 4 were prepared.

<Examples 1-1 to 1-17>
Hindered amine compounds of the types shown in Table 4 were added to the composition having the liquid crystal composition A so as to have concentrations (mass ppm) shown in Table 4 to prepare n-type liquid crystal compositions. Next, a polyimide alignment film S is applied so as to obtain horizontal alignment of the liquid crystal, and a rubbing alignment treatment is applied so that the pre-twist angle is 5° from the longitudinal direction of the comb-shaped electrodes (common electrode and pixel electrode). A rubbing-oriented glass cell (cell gap: 3.5 μm) with ITO was prepared. The inter-electrode distance of the comb-shaped electrodes (common electrode and pixel electrode) was 3.5 μm. Subsequently, after each n-type liquid crystal composition was injected into the glass cell by a vacuum injection method, the glass cell was taken out, and the injection port was sealed with a sealing agent 3026B (manufactured by ThreeBond Co., Ltd.) to obtain an IPS mode liquid crystal display. I got the device.

The twist angle (initial) of the obtained liquid crystal display device was measured using Optipro (manufactured by Shintech Co., Ltd.). After applying a square wave of ±30 V, 60 Hz for 150 minutes, the twist angle (after driving) was measured again. From the obtained twist angle, the twist angle shift was calculated according to the following formula.
Twist angle shift (°) = Twist angle (after driving) - Twist angle (initial)
The smaller the twist angle shift, the smaller the image sticking and the better. Table 5 shows the results.

<Comparative Example 1-1>
A liquid crystal display device was produced and the twist angle shift was measured in the same manner as in Example 1-1, except that no hindered amine compound was added. Table 5 shows the results.

The twist angle shifts of Examples 1-1 to 1-17 were small compared to the twist angle shift of Comparative Example 1-1, and showed favorable values.

<Examples 1-18 to 1-21>
A liquid crystal display device was fabricated and the twist angle shift was measured in the same manner as in Examples 1-3 and 1-7, except that the distance between the electrodes was changed as shown in Table 6. Table 6 shows the results.

The twist angle shifts of Examples 1-18 to 1-19 showed good values. The twist angle shifts of Examples 1-20 to 1-21 showed good values.

<Examples 1-22 to 1-32 and Comparative Examples 1-4 to 1-6>
Except for changing the liquid crystal composition as shown in Table 7, in the same manner as in Examples 1-1, 1-3, 1-7, 1-8 or Comparative Example 1-1, a liquid crystal display element was produced and the twist angle was measured. Shift measurements were taken. Table 7 shows the results.

The twist angle shifts of Examples 1-22 to 1-24 were small compared to the twist angle shift of Comparative Example 1-4, and showed favorable values. The twist angle shifts of Examples 1-25 to 1-27 were smaller than the twist angle shift of Comparative Example 1-5, and showed good values. The twist angle shifts of Examples 1-28 to 1-30 were small compared to the twist angle shift of Comparative Example 1-6, and showed favorable values.

<Examples 1-33 to 1-34 and Comparative Example 1-7>
A liquid crystal display element was produced and manufactured in the same manner as in Examples 1-3 and 1-7 or Comparative Example 1-1, respectively, except that the polyimide alignment film A having a higher imidization rate was used instead of the polyimide alignment film S. Twist angle shift measurements were taken. Table 8 shows the results.

<Examples 1-35 to 1-36 and Comparative Example 1-8>
Instead of the rubbing alignment treatment, 300 mJ/cm ² of polarized UV of 254 nm was irradiated (the alignment film obtained by this was referred to as polyimide alignment film P). In the same manner as in -1, a liquid crystal display element was produced and the twist angle shift was measured. Table 8 shows the results.

The twist angle shifts of Examples 1-33 to 1-34 were small compared to the twist angle shift of Comparative Example 1-7, and showed favorable values. The twist angle shifts of Examples 1-35 to 1-36 were smaller than the twist angle shift of Comparative Example 1-8 and showed good values.

<Reference example 1-1>
A liquid crystal display device was fabricated and the twist angle shift was measured in the same manner as in Examples 1-3, except that the distance between the electrodes was changed to 20 μm. Table 9 shows the results.

<Example 1-37>
When the driving voltage was measured using the cells of Examples 1-1.1-18.1-20 and Reference Example 1-1, the driving voltage of Example 1-1 with the short distance between the electrodes was the lowest. Therefore, considering the relationship between the twist angle shift and the driving voltage, it is considered that the distance between the electrodes is preferably 3.5 to 10 μm.

<Examples 2-1 to 2-17>
Hindered amine compounds of the types shown in Table 10 were added to the composition having the liquid crystal composition A so as to have concentrations (mass ppm) shown in Table 10, thereby preparing n-type liquid crystal compositions. Next, a polyimide alignment film S is applied so as to obtain horizontal alignment of the liquid crystal, and the ITO is subjected to a rubbing alignment treatment so that the pre-twist angle is 85° from the longitudinal direction of the electrode slit (pixel electrode). A glass cell (cell gap: 3.5 μm) consisting of a substrate having an electrode and an insulating layer and a counter substrate was prepared. The inter-electrode distance of the slit electrodes (pixel electrodes) was 3.5 μm. Subsequently, after each n-type liquid crystal composition was injected into the glass cell by a vacuum injection method, the glass cell was taken out, and the injection port was sealed with a sealing agent 3026B (manufactured by ThreeBond Co., Ltd.) to obtain an FFS mode liquid crystal display. I got the device. The twist angle shift of the obtained liquid crystal display element was measured in the same manner as in Example 1-1. Table 10 shows the results.

<Comparative Example 2-1>
A liquid crystal display device was produced and the twist angle shift was measured in the same manner as in Example 2-1, except that no hindered amine compound was added. Table 10 shows the results.

The twist angle shifts of Examples 2-1 to 2-17 were small compared to the twist angle shift of Comparative Example 2-1, and showed favorable values.

<Examples 2-18 to 2-21>
A liquid crystal display device was fabricated and the twist angle shift was measured in the same manner as in Examples 2-3 and 2-7, respectively, except that the distance between the electrodes was changed as shown in Table 10. Table 11 shows the results.

The twist angle shifts of Examples 2-18 to 2-19 showed good values. The twist angle shifts of Examples 2-20 to 2-21 showed good values.

<Examples 2-22 to 2-32 and Comparative Examples 2-4 to 2-6>
Except for changing the liquid crystal composition as shown in Table 12, in the same manner as in Examples 2-1, 2-3, 2-7, 2-8 or Comparative Example 2-1, a liquid crystal display element was produced and the twist angle was measured. Shift measurements were taken. Table 12 shows the results.

The twist angle shifts of Examples 2-22 to 2-24 were smaller than the twist angle shift of Comparative Example 2-4, and showed good values. The twist angle shifts of Examples 2-25 to 2-27 were smaller than the twist angle shift of Comparative Example 2-5, and showed good values. The twist angle shifts of Examples 2-28 to 2-30 were smaller than the twist angle shift of Comparative Example 2-6, and showed good values.

<Examples 2-33 to 2-34 and Comparative Example 2-7>
A liquid crystal display element was fabricated and manufactured in the same manner as in Examples 2-3 and 2-7 or Comparative Example 2-1, respectively, except that the polyimide alignment film A having a higher imidization rate was used instead of the polyimide alignment film S. Twist angle shift measurements were taken. The results are shown in Table 13.

<Examples 2-35 to 2-36 and Comparative Example 2-8>
Instead of the rubbing alignment treatment, 300 mJ/cm ² of polarized UV of 254 nm was irradiated (the alignment film obtained by this was referred to as polyimide alignment film P). In the same manner as in -1, a liquid crystal display element was produced and the twist angle shift was measured. The results are shown in Table 13.

The twist angle shifts of Examples 2-32 to 2-33 were smaller than the twist angle shift of Comparative Example 2-7 and showed good values. The twist angle shifts of Examples 2-34 to 2-35 were smaller than the twist angle shift of Comparative Example 2-8, and showed good values.

<Reference example 2-1>
A liquid crystal display device was fabricated and the twist angle shift was measured in the same manner as in Example 2-3, except that the distance between the electrodes was changed to 20 μm. The results are shown in Table 14.

<Example 2-37>
When the driving voltage was measured using the cells of Examples 2-1, 2-18, 2-20 and Reference Example 2-1, the same tendency as in Example 1-37 was shown, indicating that the distance between the electrodes was short. 2-1 had the lowest driving voltage. Therefore, considering the relationship between the twist angle shift and the drive voltage, it is considered that the distance between the electrodes is preferably 3.5 to 10 μm.

DESCRIPTION OF SYMBOLS 1A, 1B... Liquid crystal display element 2... First substrate 3... Second substrate 4... Liquid crystal layer 5... First polarizing plate 6... Color filter 7... First alignment film 8... Second polarizing plate 9a, 9b... Common electrode 10a, 10b... Pixel electrode 11... Second alignment film 12... Insulating layer.

Claims (6)

comprising a pair of substrates and a liquid crystal layer disposed between the pair of substrates,
a plurality of common electrodes and pixel electrodes are formed on one substrate of the pair of substrates;
Among the plurality of common electrodes and pixel electrodes, the shortest distance between two electrodes formed in the same plane on the one substrate is less than 20 μm,
A liquid crystal display element, wherein the liquid crystal layer contains a hindered amine compound,
The liquid crystal display element is an FFS mode liquid crystal display element,
The hindered amine compound has the following formula (1)

[In the formula,
R ¹ represents a hydrogen atom or an alkyl group having 1 to 12 carbon atoms,
One or more —CH ₂ — present in the alkyl group are each independently —S—, —CH═CH—, —C≡C—, —CO—, —CO—O— , —O—CO—, —OCF ₂ —, or —CF ₂ O—,
R ² , R ³ , R ⁴ and R ⁵ each independently represent an alkyl group having 1 to 8 carbon atoms,
One or more —CH ₂ — present in the alkyl group are each independently —O—, —S—, —CH═CH—, —C≡C—, —CO—, — optionally substituted with CO—O—, —O—CO—, —OCF ₂ —, or —CF ₂ O—;
R ² and R ³ may combine with each other to form a ring,
R ⁴ and R ⁵ may combine with each other to form a ring,
R ⁶ and R ⁷ each independently represent a hydrogen atom or an alkyl group having 1 to 6 carbon atoms,
One or more —CH ₂ — present in the alkyl group are each independently —O—, —S—, —CH═CH—, —C≡C—, —CO—, — optionally substituted with CO—O—, —O—CO—, —OCF ₂ , — or —CF ₂ O—,
R ⁸ represents a hydrogen atom or a monovalent organic group,
the monovalent organic group may be bonded to M ¹ to form a ring;
M ¹ represents an n-valent organic group,
m represents an integer from 0 to 2,
n represents an integer from 1 to 6,
When n is an integer of 2 to 6, multiple R ¹ to R ⁷ may be the same or different. ]
is a compound represented by
The liquid crystal layer has the following formula (L-1)

[In the formula,
R ^L11 and R ^L12 each independently represent an alkyl group having 1 to 8 carbon atoms, and one 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-. ]
Further containing a compound represented by, a liquid crystal display element. 2. The liquid crystal display element according to claim 1, wherein the concentration of said hindered amine compound in said liquid crystal layer is 10 to 2000 mass ppm. 3. The liquid crystal display element according to claim 1 , wherein the content of the compound represented by formula (L-1) in the liquid crystal layer is 1% by mass or more and 95% by mass or less. The liquid crystal layer further contains at least one compound selected from the group consisting of compounds represented by the following formulas (N-1), (N-2), (N-3) and (N-4). The liquid crystal display device according to any one of claims 1 to 3 .

[In the formulas (N-1), (N-2), (N-3) and (N-4),
R ^N11 , R ^N12 , R ^N21 , R ^N22 , R ^N31 , R ^N32 , R ^N41 and R ^N42 each independently represent an alkyl group having 1 to 8 carbon atoms, and one or two or more —CH ₂ — that are not adjacent are each independently substituted with —CH═CH—, —C≡C—, —O—, —CO—, —COO— or —OCO—; may be
A ^N11 , A ^N12 , A ^N21 , A ^N22 , A ^N31 , A ^N32 , A ^N41 and A ^N42 are each independently
(a) 1,4-cyclohexylene group (one -CH ₂ - present in this group or two or more non-adjacent -CH ₂ - may be substituted with -O-); ,
(b) a 1,4-phenylene group (one -CH= or two or more non-adjacent -CH= present in this group may be substituted with -N=),
(c) naphthalene-2,6-diyl group, 1,2,3,4-tetrahydronaphthalene-2,6-diyl group or decahydronaphthalene-2,6-diyl group (naphthalene-2,6-diyl group or One -CH= or two or more non-adjacent -CH= present in the 1,2,3,4-tetrahydronaphthalene-2,6-diyl group may be substituted with -N= ) and (d) represents a group selected from the group consisting of 1,4-cyclohexenylene groups, and the hydrogen atoms in group (a), group (b), group (c) and group (d) are each independently optionally substituted with a cyano group, a fluorine atom or a chlorine atom,
Z ^N11 , Z ^N12 , Z ^N21 , Z ^N22 , Z ^N31 , Z ^N32 , Z ^N41 and Z ^N42 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 represents -C≡C-,
X ^N21 represents a hydrogen atom or a fluorine atom,
T ^N31 represents —CH ₂ — or an oxygen atom,
X ^N41 represents an oxygen atom, a nitrogen atom, or —CH ₂ —;
Y ^N41 represents a single bond or —CH ₂ —;
n ^N11 , n ^N12 , n ^N21 , n ^N22 , n ^N31 , n ^N32 , n ^N41 and n ^N42 each independently represent an integer of 0 to 3, but n ^N11 +n ^N12 , n ^N21 + n ^N22 and n ^N31 +n ^N32 are each independently 1, 2 or 3, and when there are a plurality of A ^N11 to A ^N32 and Z ^N11 to Z ^N32 , they may be the same or different, n ^N41 +n ^N42 represents an integer of 0 to 3, and when there are a plurality of each of A ^N41 , A ^N42 , Z ^N41 and Z ^N42 , they may be the same or different. ] 5. The liquid crystal display element according to claim 1 , wherein said liquid crystal layer contains a hindered phenol compound. The plurality of common electrodes are formed in a first plane on the one substrate,
the plurality of pixel electrodes are formed in a second plane different from the first plane on the one substrate;
6. The liquid crystal display element according to claim 1 , wherein the shortest distance between the plurality of pixel electrodes is less than 20 μm.

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