JP2020023592A - Liquid crystal composition, liquid crystal display element and liquid crystal display - Google Patents

Abstract

To provide a liquid crystal composition having low rotation viscosity (γ) and a negative value of dielectric anisotropy, a liquid crystal display element including the same and having a high response speed, and a liquid crystal display including the liquid crystal display element.SOLUTION: The present invention provides a liquid crystal composition having a negative value of dielectric anisotropy (Δε), containing a compound represented by formula (i), one or more selected from compounds represented by formula (N-1-1) and (N-1-2), and a compound represented by formula (ii).SELECTED DRAWING: None

Description

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

A liquid crystal display element is configured such that a liquid crystal layer is sandwiched between a pair of substrates, and the liquid crystal layer includes a liquid crystal composition. Such liquid crystal display elements are widely used in image display devices such as liquid crystal televisions, computer monitors, mobile phones, information terminals, and game machines.
Typical display methods of the liquid crystal display element include, for example, a TN (twisted nematic) type, an STN (super twisted nematic) type, and an ECB (field effect birefringence) type. In addition, an active matrix type liquid crystal display device using a TFT (thin film transistor) includes a VA type in which liquid crystal molecules are vertically aligned, an IPS (in-plane switching) type in which liquid crystal molecules are horizontally aligned, and an FFS (fringe type), which is a type thereof. Field switching) type.
Nematic liquid crystals are used in these liquid crystal display devices, and a liquid crystal composition having a positive or negative dielectric anisotropy (Δε) is used depending on the type of the device.

A liquid crystal composition used for a liquid crystal display element is required to be stable against external factors such as moisture, air, heat, and light. In addition, the liquid crystal composition is required to exhibit a liquid crystal phase in a temperature range as wide as possible around room temperature, have low viscosity, and have a low driving voltage. Further, the liquid crystal composition is prepared from several to several tens of compounds in order to optimize the dielectric anisotropy (Δε) and the refractive index anisotropy (Δn) according to each display element. It is configured. Also, from the setting of Δn × d, which is the product of Δn and cell gap (d), it is necessary to adjust Δn of the liquid crystal composition to an appropriate range according to the cell gap. In addition, when a liquid crystal display element is applied to a television or the like, high-speed response is emphasized, and a liquid crystal composition having a small rotational viscosity (γ ₁ ) is required.

  For example, Patent Literature 1 discloses a liquid crystal composition having a negative value of dielectric anisotropy (Δε), which is useful for providing a matrix liquid crystal display having a large resistivity so as to enable various halftone displays. Is disclosed.

JP 2010-254998 A

  However, there are many examples of the liquid crystal composition disclosed in Patent Document 1 having a negative dielectric anisotropy (Δε) and a relatively small refractive index anisotropy (Δn). Inadequate in terms of speed.

The present invention has been made in view of the above circumstances, and has a small rotational viscosity (γ ₁ ), a liquid crystal composition having a negative value of dielectric anisotropy (Δε), and the use of the liquid crystal composition. An object of the present invention is to provide a liquid crystal display element having a high response speed and a liquid crystal display including the liquid crystal display element.

  The present invention relates to a liquid crystal composition having a negative value of dielectric anisotropy (Δε), wherein one or two or more compounds represented by the following general formula (i) are represented by the following general formula (N-1) -1) and one or more compounds selected from the group consisting of compounds represented by (N-1-2), and one or more compounds represented by the following general formula (ii) The liquid crystal composition characterized by containing is provided.

（式中、Ｒ^ｉ１及びＲ^ｉ２はそれぞれ独立して炭素原子数２〜８のアルケニル基を表し、
Ｒ^Ｎ１１１、Ｒ^Ｎ１１２、Ｒ^Ｎ１２１、Ｒ^Ｎ１２２、Ｒ^ｉｉ１及びＲ^ｉｉ２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、前記アルキル基中の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、
上記一般式（Ｎ−１−１）中のシクロヘキサン環中の１個又は２個以上の水素原子は、それぞれ独立してハロゲン原子又は炭素原子数１〜８のアルキル基に置換されてよく、また前記アルキル基中の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、
上記一般式（Ｎ−１−１）中のベンゼン環中の１個の水素原子は、それぞれ独立してハロゲン原子又は炭素原子数１〜８のアルキル基に置換されてよく、また前記アルキル基中の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、
上記一般式（Ｎ−１−２）中のシクロヘキサン環中の１個又は２個以上の水素原子は、それぞれ独立してハロゲン原子又は炭素原子数１〜８のアルキル基に置換されてよく、また前記アルキル基中の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、
上記一般式（Ｎ−１−２）中のベンゼン環中の１個の水素原子は、それぞれ独立してハロゲン原子又は炭素原子数１〜８のアルキル基に置換されてよく、また前記アルキル基中の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^ｉｉ１は０又は１を表す。）

(Wherein, R ⁱ¹ and R ⁱ² each independently represent an alkenyl group having 2 to 8 carbon atoms,
^{R N111, R N112, R N121} , R N122, R ii1 and ^{R ii2} each independently represent an alkyl group having 1 to 8 carbon atoms, one or non-adjacent two or more in the alkyl group -CH ₂ - are each independently -CH = CH -, - C≡C - , - O -, - CO -, - COO- or -OCO- may be substituted by,
One or more hydrogen atoms in the cyclohexane ring in the general formula (N-1-1) may be each independently substituted with a halogen atom or an alkyl group having 1 to 8 carbon atoms, One or two or more non-adjacent —CH ₂ — in the alkyl group are each independently —CH ＝ CH—, —C≡C—, —O—, —CO—, —COO—, or —OCO May be replaced by
One hydrogen atom in the benzene ring in the general formula (N-1-1) may be independently substituted by a halogen atom or an alkyl group having 1 to 8 carbon atoms. one or non-adjacent two or more -CH ₂ in the - each independently -CH = CH -, - C≡C - , - O -, - CO -, - COO- or substituted by -OCO- May be
One or more hydrogen atoms in the cyclohexane ring in the general formula (N-1-2) may be each independently substituted with a halogen atom or an alkyl group having 1 to 8 carbon atoms, One or two or more non-adjacent —CH ₂ — in the alkyl group are each independently —CH ＝ CH—, —C≡C—, —O—, —CO—, —COO—, or —OCO May be replaced by
One hydrogen atom in the benzene ring in the general formula (N-1-2) may be independently substituted with a halogen atom or an alkyl group having 1 to 8 carbon atoms. one or non-adjacent two or more -CH ₂ in the - each independently -CH = CH -, - C≡C - , - O -, - CO -, - COO- or substituted by -OCO- May be
n ⁱⁱ¹ represents 0 or 1. )

The present invention also provides a liquid crystal display device using the liquid crystal composition.
Further, the present invention provides a liquid crystal display comprising the liquid crystal display element.

According to the present invention, a liquid crystal composition having a small rotational viscosity (γ ₁ ), exhibiting a liquid crystal phase in a wide temperature range, and having a negative value of dielectric anisotropy (Δε), using the liquid crystal composition A liquid crystal display device having a high response speed and a liquid crystal display including the liquid crystal display device are provided.

FIG. 2 is a cross-sectional view schematically illustrating a main part of an embodiment of a cell used in the liquid crystal display element of the present invention. FIG. 2 is a cross-sectional view schematically illustrating a main part of an embodiment of a cell used in the liquid crystal display element of the present invention. FIG. 9 is a cross-sectional view schematically illustrating a main part of another embodiment of the cell used in the liquid crystal display element of the present invention. It is a figure which shows typically one Embodiment of the liquid crystal display element of this invention. FIG. 5 is an enlarged plan view showing the liquid crystal display element shown in FIG. 4. FIG. 6 is a cross-sectional view when the liquid crystal display element shown in FIG. 5 is cut.

<< liquid crystal composition >>
The liquid crystal composition of the present invention is a liquid crystal composition having a negative value of dielectric anisotropy (Δε), and one or more compounds represented by the following general formula (i), One or more compounds selected from the group consisting of compounds represented by (N-1-1) and (N-1-2), and one compound represented by the following general formula (ii) Alternatively, it is characterized by containing two or more types.

（式中、Ｒ^ｉ１及びＲ^ｉ２はそれぞれ独立して炭素原子数２〜８のアルケニル基を表し、
Ｒ^Ｎ１１１、Ｒ^Ｎ１１２、Ｒ^Ｎ１２１、Ｒ^Ｎ１２２、Ｒ^ｉｉ１及びＲ^ｉｉ２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、前記アルキル基中の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、
上記一般式（Ｎ−１−１）中のシクロヘキサン環中の１個又は２個以上の水素原子は、それぞれ独立してハロゲン原子又は炭素原子数１〜８のアルキル基に置換されてよく、また前記アルキル基中の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、
上記一般式（Ｎ−１−１）中のベンゼン環中の１個の水素原子は、それぞれ独立してハロゲン原子又は炭素原子数１〜８のアルキル基に置換されてよく、また前記アルキル基中の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、
上記一般式（Ｎ−１−２）中のシクロヘキサン環中の１個又は２個以上の水素原子は、それぞれ独立してハロゲン原子又は炭素原子数１〜８のアルキル基に置換されてよく、また前記アルキル基中の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、
上記一般式（Ｎ−１−２）中のベンゼン環中の１個の水素原子は、それぞれ独立してハロゲン原子又は炭素原子数１〜８のアルキル基に置換されてよく、また前記アルキル基中の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^ｉｉ１は０又は１を表す。）

(Wherein, R ⁱ¹ and R ⁱ² each independently represent an alkenyl group having 2 to 8 carbon atoms,
^{R N111, R N112, R N121} , R N122, R ii1 and ^{R ii2} each independently represent an alkyl group having 1 to 8 carbon atoms, one or non-adjacent two or more in the alkyl group -CH ₂ - are each independently -CH = CH -, - C≡C - , - O -, - CO -, - COO- or -OCO- may be substituted by,
One or more hydrogen atoms in the cyclohexane ring in the general formula (N-1-1) may be each independently substituted with a halogen atom or an alkyl group having 1 to 8 carbon atoms, One or two or more non-adjacent —CH ₂ — in the alkyl group are each independently —CH ＝ CH—, —C≡C—, —O—, —CO—, —COO—, or —OCO May be replaced by
One hydrogen atom in the benzene ring in the general formula (N-1-1) may be independently substituted by a halogen atom or an alkyl group having 1 to 8 carbon atoms. one or non-adjacent two or more -CH ₂ in the - each independently -CH = CH -, - C≡C - , - O -, - CO -, - COO- or substituted by -OCO- May be
One or more hydrogen atoms in the cyclohexane ring in the general formula (N-1-2) may be each independently substituted with a halogen atom or an alkyl group having 1 to 8 carbon atoms, One or two or more non-adjacent —CH ₂ — in the alkyl group are each independently —CH ＝ CH—, —C≡C—, —O—, —CO—, —COO—, or —OCO May be replaced by
One hydrogen atom in the benzene ring in the general formula (N-1-2) may be independently substituted with a halogen atom or an alkyl group having 1 to 8 carbon atoms. one or non-adjacent two or more -CH ₂ in the - each independently -CH = CH -, - C≡C - , - O -, - CO -, - COO- or substituted by -OCO- May be
n ⁱⁱ¹ represents 0 or 1. )

According to the present invention, a liquid crystal composition having a small rotational viscosity (γ ₁ ), exhibiting a liquid crystal phase in a wide temperature range, and having a negative value of dielectric anisotropy (Δε), using the liquid crystal composition A liquid crystal display device having a high response speed and a liquid crystal display including the liquid crystal display device are provided.
Further, as another action and effect of the liquid crystal composition of the present invention, it is mentioned that the liquid crystal composition has excellent low-temperature storage stability.

In this specification, “%” represents “% by mass”, and “wt%” also represents “% by mass” unless otherwise specified.
“Halogen atom” represents “fluorine atom (F), chlorine atom (Cl), bromine atom or iodine atom (I)”.

In the general formula (i), R ⁱ¹ and R ⁱ² each independently represent an alkenyl group having 2 to 8 carbon atoms. R ⁱ¹ and R ⁱ² may each independently be an alkenyl group having 2 to 6 carbon atoms, may be an alkenyl group having 2 to 5 carbon atoms, or may be an alkenyl group having 2 to 4 carbon atoms. And may be an alkenyl group having 2 to 3 carbon atoms, and may be an ethenyl group (that is, a vinyl group) or a 1-propenyl group.

The alkenyl group is preferably selected from groups represented by any one of formulas (R1) to (R5) (black dots in each formula represent carbon atoms in a ring structure). That is, in the compound represented by the general formula (i), preferred alkenyl groups for R ⁱ¹ and R ⁱ² are each independently selected from groups represented by any of formulas (R1) to (R5). .

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

  The lower limit of the preferable content of the compound represented by the general formula (i) based on the total amount of the composition of the present invention is 1%, 3%, 5%, 7%, 10%, 15%, 17%, 20%, 23%, 25%, 27%, 30%, 35%. The preferred upper limit of the content is 60%, 55%, 50%, 45%, 42%, 40%, and 38% based on the total amount of the composition of the present invention. %, 35%, 33%, 30%, 28%, 25%, 23%, 20%, 18%, and 15%.

  The compound represented by the general formula (i) is preferably a compound represented by the general formula (i-1).

（式中、Ｒ^ｉ１１及びＲ^ｉ１２は、それぞれ独立して水素原子又は炭素原子数１〜６のアルキル基を表す。）

(In the formula, R ⁱ¹¹ and R ⁱ¹² each independently represent a hydrogen atom or an alkyl group having 1 to 6 carbon atoms.)

In the general formula (i-1), R ⁱ¹¹ and R ⁱ¹² may each independently be a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, or a hydrogen atom or an alkyl group having 1 to 2 carbon atoms. Or a hydrogen atom or a methyl group. In the general formula ^(i-1), at least one of ^{R i11} and ^{R i12} is a hydrogen atom, more preferably from the viewpoint of response ^speed, it ^{R i11} and ^{R i12} is a hydrogen atom, a response speed Particularly preferred from the viewpoint.

  The lower limit of the preferable content of the compound represented by the formula (i-1) relative to the total amount of the composition of the present invention is 1%, 3%, 5%, or 7%. 10%, 12%, 15%, 17%, 19%, 20%, 23%, 25%, 27%, 30% , 35%. The preferred upper limit of the content is 60%, 55%, 50%, 45%, 42%, 40%, and 38% based on the total amount of the composition of the present invention. %, 35%, 33%, 30%, 28%, 25%, 23%, 22%, 21%, and 20%.

  The compound represented by the general formula (i) is preferably a compound selected from the group of compounds represented by the general formulas (i-1-1) to (i-1-8), and -1-1) to a compound represented by the formula (i-1-6), and preferably a compound represented by the general formula (i-1-1) to the formula (i-1-3) The compound represented by general formula (i-1-1) is more preferable.

In Formula (N-1-1), R ^N111 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and more preferably a propyl group, a pentyl group, or a vinyl group.
In the general formula (N-1-1), ^RN112 is preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and an ethoxy group or butoxy group. Groups are preferred.

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

  When increasing the absolute value of Δε, it is preferable to set the content higher. When importance is placed on solubility at a low temperature, setting the content range to an intermediate value is highly effective, and when emphasizing Tni. Is more effective when the content is set lower. Further, in order to improve dripping marks and seizure characteristics, it is preferable to set the content range in the middle.

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

  Further, the compound represented by the general formula (N-1-1) includes the compounds represented by the formulas (N-1-1.1) to (N-1-1.4) and the formulas (N-1-1.11). Is preferably a compound selected from the group of compounds represented by formula (N-1-1.14) and formula (N-1-1.20) from formula (N-1-1.20), Compounds represented by the formulas (N-1-1.1) to (N-1-1.4) are preferable, and the compounds represented by the formulas (N-1-1.1) and (N-1-1. The compound represented by 3) is preferred.

  Formula (N-1-1.1) to Formula (N-1-1.4), Formula (N-1-1.11) to Formula (N-1-1.14), Formula (N-1- The compounds represented by formulas (1.20) to (N-1-1.22) can be used alone or in combination, but the compounds represented by the total amount of the composition of the present invention can be used. The lower limit of the preferable content of the compound alone or these compounds is 3%, 5%, 10%, 13%, 15%, 17%, 20%, 23% , 25%, 27%, 30%, 33%, and 35%. The upper limit of the preferred content is 50%, 40%, 38%, 35%, 33%, 30%, 28%, or 40% based on the total amount of the composition of the present invention. %, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 7%, 6% %, 5%, and 3%.

In Formula (N-1-2), ^RN121 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and more preferably an ethyl group, a propyl group, a butyl group, or a pentyl group.
In the general formula (N-1-2), ^RN122 is preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and a methyl group, ethyl Groups, propyl, methoxy, ethoxy or propoxy groups are preferred.

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

  When increasing the absolute value of Δε, it is preferable to set the content higher. When importance is placed on solubility at a low temperature, setting the content range to an intermediate value is highly effective, and when emphasizing Tni. Is more effective if the content is set higher. Further, in order to improve dripping marks and seizure characteristics, it is preferable to set the content range in the middle.

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

  Further, the compound represented by the general formula (N-1-2) is obtained by converting the compound represented by the formula (N-1-2.1) to the compound represented by the formula (N-1-2.7) or the compound represented by the formula (N-1-2.10). Is preferably a compound selected from the group of compounds represented by formula (N-1-2.13) and formula (N-1-2.20) from formula (N-1-2.20), From the formula (N-1-2.3), the formula (N-1-2.7), the formula (N-1-2.10), the formula (N-1-2.11), and the formula (N-1- 2.13) and a compound represented by the formula (N-1-2.20). When emphasis is placed on the improvement of Δε, the compound represented by the formula (N-1-2. The compound represented by 1-2.7) is preferable, and when emphasis is placed on the improvement of Tni, the compound represented by the formula (N-1-2.10), the formula (N-1-2.11) or the formula (N-1) -2.13) is preferable. When it is important to improve the response speed, the compound represented by the formula (N-1-2.20) is preferable.

  Formula (N-1-2.1) to Formula (N-1-2.7), Formula (N-1-2.10) to Formula (N-1-2.13), and Formula (N-1 -2.20) to the compounds represented by the formula (N-1-2.22) can be used alone or in combination, but based on the total amount of the composition of the present invention. Is 3%, 5%, 7%, 10%, 13%, 15%, 17%, 20% or less. %, 23%, 25%, 27%, 30%, 33%, and 35%. The upper limit of the preferred content is 50%, 40%, 38%, 35%, 33%, 30%, 28%, or 40% based on the total amount of the composition of the present invention. %, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 7%, 6% %, 5%, and 3%.

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

When two or more compounds represented by the general formula (ii) are used in combination, for example, two or more compounds having n ⁱⁱ¹ of 0 may be used, or only compounds having n ⁱⁱ¹ of 1 may be used. Two or more compounds may be used, or one or more compounds having n ⁱⁱ¹ of 0 and one or more compounds having n ⁱⁱ¹ of 1 may be used in combination.

  When increasing the absolute value of Δε, it is preferable to set the content higher. When importance is placed on solubility at a low temperature, setting the content range to an intermediate value is highly effective, and when emphasizing Tni. Is more effective if the content is set higher. Further, in order to improve dripping marks and seizure characteristics, it is preferable to set the content range in the middle.

  The lower limit of the preferable content of the compound represented by the general formula (ii) with respect to the total amount of the composition of the present invention is 5%, 10%, 13%, 15%, 17% and 20%. The preferred upper limit of the content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, or 35%, based on the total amount of the composition of the present invention. %, 15%, and 13%.

  The compound represented by the general formula (ii) can be classified into a compound represented by the general formula (N-1-10) and a compound represented by the general formula (N-1-11).

（式中、Ｒ^{Ｎ１１０１}及びＲ^{Ｎ１１０２}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、前記アルキル基中の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。）

(Wherein, R ^N1101 and R ^N1102 each independently represent an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent —CH ₂ — in the alkyl group are each independently —CH ＝ CH—, —C≡C—, —O—, —CO—, —COO— or —OCO—.

（式中、Ｒ^{Ｎ１１１１}及びＲ^{Ｎ１１１２}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、前記アルキル基中の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。）

( ^Wherein , R ^N1111 and R ^N1112 each independently represent an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent —CH ₂ — in the alkyl group are each independently —CH ＝ CH—, —C≡C—, —O—, —CO—, —COO— or —OCO—.

In Formula (N-1-10), R ^N1101 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and is preferably an ethyl group, a propyl group, a butyl group, a vinyl group, or A propenyl group is preferred.
In the general formula (N-1-10), ^RN1102 is preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and an ethoxy group and a propoxy group. Or butoxy groups are preferred.

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

  When increasing the absolute value of Δε, it is preferable to set the content higher. When importance is placed on solubility at a low temperature, setting the content range to an intermediate value is highly effective, and when emphasizing Tni. Is more effective if the content is set higher. Further, in order to improve dripping marks and seizure characteristics, it is preferable to set the content range in the middle.

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

  Further, the compounds represented by the general formula (N-1-10) include the compounds represented by the formulas (N-1-10.1) to (N-1-10.5) and (N-1-10.11). ) Is preferably a compound selected from the group of compounds represented by the formula (N-1-10.14), and the compounds represented by the formulas (N-1-10.1) to (N-1-10.5) The compounds represented by the formulas (N-1-10.1) and (N-1-10.2) are preferable.

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

In the general formula (N-1-11), ^RN1111 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and is preferably an ethyl group, a propyl group, a butyl group, a vinyl group, or a 1- A propenyl group is preferred.
In the general formula (N-1-11), ^RN1112 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 an ethoxy group or a propoxy group. Or butoxy groups are preferred.

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

  When increasing the absolute value of Δε, it is preferable to set the content higher. When importance is placed on solubility at a low temperature, setting the content range to an intermediate value is highly effective, and when emphasizing Tni. Is more effective if the content is set higher. Further, in order to improve dripping marks and seizure characteristics, it is preferable to set the content range in the middle.

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

  Further, the compound represented by the general formula (N-1-11) includes the compounds represented by the formulas (N-1-11.1) to (N-1-11.5) and the formula (N-1-11.11). ) Is preferably a compound selected from the group of compounds represented by the formula (N-1-11.14), and the compounds represented by the formulas (N-1-11.2 and (N-1-11.4) Are preferred.

  The compounds represented by the formula (N-1-11.2) and the formula (N-1-11.4) can be used alone or in combination. The lower limit of the preferred content of the compound alone or with respect to the total amount of is 5%, 10%, 13%, 15%, 17%, and 20%. The preferred upper limit of the content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, or 35%, based on the total amount of the composition of the present invention. %, 15%, and 13%.

  The composition of the present invention preferably contains three or more compounds selected from the group consisting of compounds represented by formulas (N-1-1), (N-1-2) and (ii).

  The composition of the present invention preferably contains one or more compounds selected from the group consisting of compounds represented by formulas (N-1), (N-2) and (N-3). . These compounds correspond to dielectrically negative compounds (the sign of Δε is negative and the absolute value is greater than 2).

（式中、Ｒ^Ｎ１１、Ｒ^Ｎ１２、Ｒ^Ｎ２１、Ｒ^Ｎ２２、Ｒ^Ｎ３１及びＲ^Ｎ３２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、前記アルキル基中の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、
Ａ^Ｎ１１、Ａ^Ｎ１２、Ａ^Ｎ２１、Ａ^Ｎ２２、Ａ^Ｎ３１及びＡ^Ｎ３２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−に置き換えられてもよい。）
（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＝に置き換えられてもよい。）
（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＝に置き換えられてもよい。）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、上記の基（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、ハロゲン原子又は炭素原子数１〜８のアルキル基に置換されてよく、また前記アルキル基中の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、
Ｚ^Ｎ１１、Ｚ^Ｎ１２、Ｚ^Ｎ２１、Ｚ^Ｎ２２、Ｚ^Ｎ３１及びＺ^Ｎ３２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、
ｎ^Ｎ１１、ｎ^Ｎ１２、ｎ^Ｎ２１、ｎ^Ｎ２２、ｎ^Ｎ３１及びｎ^Ｎ３２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、Ｚ^Ｎ１１〜Ｚ^Ｎ３２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よいが、一般式（Ｎ−１−１）、（Ｎ−１−２）及び（ｉｉ）で表される化合物を除く。）

(Wherein, R ^N11 , R ^N12 , R ^N21 , R ^N22 , R ^N31 and R ^N32 each independently represent an alkyl group having 1 to 8 carbon atoms, and one or two non-adjacent alkyl groups in the alkyl group more than five -CH ₂ - are each independently -CH = CH -, - C≡C - , - O -, - CO -, - COO- or -OCO- may be substituted by,
A ^N11 , A ^N12 , A ^N21 , A ^N22 , A ^N31 and A ^N32 each independently represent (a) a 1,4-cyclohexylene group (one -CH ₂ -or one adjacent to the 1,4-cyclohexylene group present in the group); Two or more —CH ₂ — may be replaced by —O—.)
(B) 1,4-phenylene group (one -CH = or two or more non-adjacent -CH = present in this group may be replaced by -N =)
(C) naphthalene-2,6-diyl group, 1,2,3,4-tetrahydronaphthalene-2,6-diyl group or decahydronaphthalene-2,6-diyl group (naphthalene-2,6-diyl group or One -CH = or two or more non-adjacent -CH = present in the 1,2,3,4-tetrahydronaphthalene-2,6-diyl group may be replaced by -N =. ) And (d) represent a group selected from the group consisting of 1,4-cyclohexenylene groups, wherein the hydrogen atoms in the groups (a), (b), (c) and (d) are respectively It may be independently substituted with a cyano group, a halogen atom or an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent —CH ₂ — in the alkyl group are each independently — CH = CH-, -C≡C-, -O-, -CO-, -C OO- or -OCO-,
^{Z N11, Z N12, Z N21} , Z N22, Z N31 and ^{Z N32} 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 -, - represents CF = CF- or -C≡C-,
X ^N21 represents a hydrogen atom or a fluorine atom,
T ^N31 is -CH ₂ - represents an or an oxygen atom,
n ^N11 , n ^N12 , n ^N21 , n ^N22 , n ^N31 and n ^N32 each independently represent an integer of 0 to 3, but n ^N11 + n ^N12 , n ^N21 + n ^N22 and n ^N31 + n ^N32 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, but may have the general formula (N-1-1), The compounds represented by (N-1-2) and (ii) are excluded. )

  The compounds represented by the general formulas (N-1), (N-2) and (N-3) are preferably compounds having a negative Δε and an absolute value larger than 3.

In the general formulas (N-1), (N-2) and (N-3), ^RN11 , ^RN12 , ^RN21 , ^RN22 , ^RN31 and ^RN32 each independently have 1 to 8 carbon atoms. Alkyl group, an alkoxy group having 1 to 8 carbon atoms, an alkenyl group having 2 to 8 carbon atoms or an alkenyloxy group having 2 to 8 carbon atoms, and an alkyl group having 1 to 5 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. More preferably, an alkyl group having 2 to 5 carbon atoms or an alkenyl group having 2 to 3 carbon atoms is further preferable, and an alkenyl group having 3 carbon atoms (propenyl group) is particularly preferable.

  When the ring structure to which it is bonded is a phenyl group (aromatic), a linear alkyl group having 1 to 5 carbon atoms, a linear alkoxy group having 1 to 4 carbon atoms and carbon An alkenyl group having 4 to 5 atoms is preferable, and when the ring structure to which 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 C1-C4 alkoxy group and a linear C2-C5 alkenyl group are preferred. In order to stabilize the nematic phase, the total 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 of formulas (R1) to (R5) (the black dots in each formula represent carbon atoms in the ring structure).

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 in order to improve the response speed, fat is preferred. And a trans-1,4-cyclohexylene group, 1,4-phenylene group, 2-fluoro-1,4-phenylene group, 3-fluoro-1,4-phenylene group, 3,5 -Difluoro-1,4-phenylene group, 2,3-difluoro-1,4-phenylene group, 1,4-cyclohexenylene group, 1,4-bicyclo [2.2.2] octylene group, piperidine-1 , 4-diyl, naphthalene-2,6-diyl, decahydronaphthalene-2,6-diyl or 1,2,3,4-tetrahydronaphthalene-2,6-diyl Preferred, it is more preferable that represents the following structures,

More preferably, it 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} _-CH 2 each _{independently O -, - CF 2 O -} , - CH 2 CH 2 -, - CF 2 CF 2 - or a single bond preferably represents _{an, -CH 2 O -, - CH} 2 CH 2 - or a single bond is more preferable, _-CH 2 O-or a single bond is particularly preferred.

^XN21 is preferably a fluorine atom.
T ^N31 is preferably an oxygen atom.

n ^N11 + n ^N12 , n ^N21 + n ^N22 and n ^N31 + n ^N32 are preferably 1 or 2, a combination in which n ^N11 is 1 and n ^N12 is 0, a combination in which n ^N11 is 2 and n ^N12 is 0, n ^A combination in which ^N11 is 1 and ^nN12 is 1, a combination in which ^nN11 is 2 and ^nN12 is 1, a combination in which ^nN21 is 1 and ^nN22 is 0, a combination in which ^nN21 is 2 and ^nN22 is A combination in which n ^N31 is 1 and n ^N32 is 0, and a combination in which n ^N31 is 2 and n ^N32 is 0 are preferable.

  The lower limit of the preferable content of the compound represented by the general formula (N-1) based on the total amount of the composition of the present invention is 1%, 3%, 10%, and 20%. Yes, 30%, 40%, 50%, 55%, 60%, 65%, 70%, 75%, 80%. The preferred upper limit of the content is 95%, 85%, 75%, 65%, 55%, 45%, 35%, 25%, 20% , 15% and 10%.

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

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

  When a composition having a high response speed is required while keeping the viscosity of the composition of the present invention low, the lower limit is preferably lower and the upper limit is preferably lower. Furthermore, when the composition of the present invention is required to have a high Tni and a composition having good temperature stability, the lower limit is preferably lower and the upper limit is lower. When it is desired to increase the dielectric anisotropy in order to keep the drive voltage low, it is preferable that the lower limit is set higher and the upper limit is set higher.

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

（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^Ｎａ１２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を表し、ｎ^Ｎｅ１１は１又は２を表し、ｎ^Ｎｆ１２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^{Ｎｅ １１}は単結合又はエチレン基を表すが少なくとも１つはエチレン基を表し、
上記一般式（Ｎ−１ａ）〜（Ｎ−１ｇ）中のシクロヘキサン環中の１個又は２個以上の水素原子は、それぞれ独立してハロゲン原子又は炭素原子数１〜８のアルキル基に置換されてよく、また前記アルキル基中の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、
上記一般式（Ｎ−１ａ）〜（Ｎ−１ｇ）中のベンゼン環中の１個の水素原子は、それぞれ独立してハロゲン原子又は炭素原子数１〜８のアルキル基に置換されてよく、また前記アルキル基中の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、ただし一般式（Ｎ−１−１）で表される化合物を除く。）

^{(Wherein, R N11} and ^{R N12} are as defined ^{R N11} and ^{R N12} in the general formula ^{(N-1), n Na12} represents 0 or ^{1, n NB11} represents 0 or ^{1, n NC11} is ^Represents 0 or 1, n ^Nd11 represents 0, n ^Ne11 represents 1 or 2, n ^Nf12 represents 1 or 2, n ^Ng11 represents 1 or 2, and A ^Ne11 is trans-1,4-cyclo. ^{Represents a} hexylene 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; , 4-cyclohexenylene group, ^{ZNe 11} represents a single bond or an ethylene group, at least one of which represents an ethylene group,
One or more hydrogen atoms in the cyclohexane ring in the above general formulas (N-1a) to (N-1g) are each independently substituted with a halogen atom or an alkyl group having 1 to 8 carbon atoms. well Te, also the alkyl one in groups or non-adjacent two or more -CH ₂ - is independently -CH = CH -, - C≡C - , - O -, - CO -, - COO -Or -OCO- may be substituted,
One hydrogen atom in the benzene ring in the above general formulas (N-1a) to (N-1g) may be each independently substituted by a halogen atom or an alkyl group having 1 to 8 carbon atoms, One or two or more non-adjacent —CH ₂ — in the alkyl group are each independently —CH ＝ CH—, —C≡C—, —O—, —CO—, —COO—, or —OCO -May be substituted, provided that the compound represented by formula (N-1-1) is excluded. )

  More specifically, the compounds represented by formula (N-1) are represented by formulas (N-1-3) to (N-1-5), (N-1-12) to (N-1-). 18) and a compound selected from the group of compounds represented by (N-1-20) to (N-1-22).

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

（式中、Ｒ^N１３１及びＲ^N１３２はそれぞれ独立して炭素原子数１〜８のアルキル基を表し、前記アルキル基中の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、
上記一般式（Ｎ−１−３）中のシクロヘキサン環中の１個又は２個以上の水素原子は、それぞれ独立してハロゲン原子又は炭素原子数１〜８のアルキル基に置換されてよく、また前記アルキル基中の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、
上記一般式（Ｎ−１−３）中のベンゼン環中の１個の水素原子は、それぞれ独立してハロゲン原子又は炭素原子数１〜８のアルキル基に置換されてよく、また前記アルキル基中の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。）

( ^Wherein , R ^N131 and R ^N132 each independently represent an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent —CH ₂ — in the alkyl group are each independently -CH = CH-, -C≡C-, -O-, -CO-, -COO- or -OCO-,
One or more hydrogen atoms in the cyclohexane ring in the general formula (N-1-3) may be each independently substituted with a halogen atom or an alkyl group having 1 to 8 carbon atoms, One or two or more non-adjacent —CH ₂ — in the alkyl group are each independently —CH ＝ CH—, —C≡C—, —O—, —CO—, —COO—, or —OCO May be replaced by
One hydrogen atom in the benzene ring in the general formula (N-1-3) may be independently substituted by a halogen atom or an alkyl group having 1 to 8 carbon atoms. one or non-adjacent two or more -CH ₂ in the - each independently -CH = CH -, - C≡C - , - O -, - CO -, - COO- or substituted by -OCO- May be. )

^RN131 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and more preferably an ethyl group, a propyl group or a butyl group. ^RN132 is preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 3 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and more preferably a 1-propenyl group, an ethoxy group, a propoxy group or a butoxy group. .

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

  When the improvement of Δε is emphasized, it is preferable to set the content higher. When the solubility at low temperature is emphasized, setting the content higher is more effective. When emphasizing Tni, the content is higher. The effect is high when set to a large value. Further, in order to improve dripping marks and seizure characteristics, it is preferable to set the content range in the middle.

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

  Further, the compounds represented by the general formula (N-1-3) include the compounds represented by the formulas (N-1-3.1) to (N-1-3.7) and the formulas (N-1-3.10). , A compound selected from the compound group represented by the formula (N-1-3.22) from the formula (N-1-3.12) and the formula (N-1-3.20), It may be a compound represented by Formulas (N-1-3.1) to (N-1-3.7) and Formulas (N-1-3.21) to (N-1-3.22). Preferably, the formula (N-1-3.1), the formula (N-1-3.2), the formula (N-1-3.3), the formula (N-1-3.4), and the formula (N- Compounds represented by 1-3.6) and (N-1-3.22) are preferred.

  Formula (N-1-3.1) to Formula (N-1-3.4), Formula (N-1-3.6), Formula (N-1-3.21), and Formula (N-1-) The compound represented by 3.22) can be used alone or in combination. However, the compounds represented by the formulas (N-1-3.1) and (N-1-3.2) Combinations, two or three combinations selected from the formulas (N-1-3.3), (N-1-3.4) and (N-1-3.6) are preferred. The lower limit of the preferred content of these compounds, alone or based on the total amount of the composition of the present invention, is 5%, 10%, 13%, 15%, 17%, and 20%. %. The preferred upper limit of the content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, or 35%, based on the total amount of the composition of the present invention. %, 15%, and 13%.

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

（式中、Ｒ^Ｎ１４１及びＲ^Ｎ１４２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、前記アルキル基中の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。）

^{(Wherein, R N141} and ^{R N142} each independently represents an alkyl group having 1 to 8 carbon atoms, said alkyl 1 in groups or non-adjacent two or more -CH ₂ - are each independently May be substituted by -CH = CH-, -C−C-, -O-, -CO-, -COO- or -OCO-.)

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

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

  When the improvement of Δε is emphasized, it is preferable to set the content higher. When the solubility at low temperature is emphasized, setting the content lower is more effective. When emphasizing Tni, the content is increased. The effect is high when set to a small value. Further, in order to improve dripping marks and seizure characteristics, it is preferable to set the content range in the middle.

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

  Further, the compounds represented by the general formula (N-1-4) include the compounds represented by the formulas (N-1-4.1) to (N-1-4.4) and the formula (N-1-4.11). ) Is preferably a compound selected from the group of compounds represented by the formula (N-1-4.14), and the compounds represented by the formulas (N-1-4.1) to (N-1-4.4). The compounds represented by the formulas (N-1-4.1), (N-1-4.2) and (N-1-4.4) are preferable.

  The compounds represented by the formulas (N-1-4.1) to (N-1-4.4) and the formulas (N-1-4.11) to (N-1-4.14) Although it is possible to use them alone or in combination, the lower limit of the preferred content of the compound alone or these compounds to the total amount of the composition of the present invention is 3%, and 5% Yes, 7%, 10%, 13%, 15%, 17%, 20%. The preferred upper limit of the content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, or 35%, based on the total amount of the composition of the present invention. %, 15%, 13%, 11%, 10%, and 8%.

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

（式中、Ｒ^N１５１及びＲ^N１５２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、前記アルキル基中の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。）

( ^Wherein , R ^N151 and R ^N152 each independently represent an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent —CH ₂ — in the alkyl group are each independently —CH ＝ CH—, —C≡C—, —O—, —CO—, —COO— or —OCO—.

R ^N151 and R ^N152 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, preferably an ethyl group, a propyl group or a butyl group. Is preferred.

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

  When the improvement of Δε is emphasized, it is preferable to set the content higher. When the solubility at low temperature is emphasized, setting the content lower is more effective. When emphasizing Tni, the content is increased. The effect is high when set to a large value. Further, in order to improve dripping marks and seizure characteristics, it is preferable to set the content range in the middle.

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

  Further, the compound represented by the general formula (N-1-5) is a compound selected from the compound group represented by the formula (N-1-5.1) from the formula (N-1-5.1). The compound represented by the formula (N-1-5.1), the formula (N-1-5.2) and the formula (N-1-5.4) is preferable.

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

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

（式中、Ｒ^{Ｎ１１２１}及びＲ^{Ｎ１１２２}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、前記アルキル基中の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。）

( ^Wherein , R ^N1121 and R ^N1122 each independently represent an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent —CH ₂ — in the alkyl group are each independently —CH ＝ CH—, —C≡C—, —O—, —CO—, —COO— or —OCO—.

^RN1121 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and more preferably an ethyl group, a propyl group or a butyl group. ^RN1122 is preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and more preferably an ethoxy group, a propoxy group or a butoxy group.

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

  When the improvement of Δε is emphasized, the content is preferably set to a relatively large value. When the solubility at a low temperature is emphasized, the effect is high when the content is set to a relatively small value. The effect is high when set to a small value. Further, in order to improve dripping marks and seizure characteristics, it is preferable to set the content range in the middle.

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

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

（式中、Ｒ^{Ｎ１１３１}及びＲ^{Ｎ１１３２}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、前記アルキル基中の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。）

^{(Wherein, R N1131} and ^{R N1132} represents an alkyl group having 1 to 8 carbon atoms independently, the one in the alkyl group or non-adjacent two or more -CH ₂ - are each independently —CH ＝ CH—, —C≡C—, —O—, —CO—, —COO— or —OCO—.

^RN1131 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and more preferably an ethyl group, a propyl group or a butyl group. ^RN1132 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 more preferably an ethoxy group, a propoxy group or a butoxy group.

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

  When the improvement of Δε is emphasized, the content is preferably set to a relatively large value. When the solubility at a low temperature is emphasized, the effect is high when the content is set to a relatively small value. The effect is high when set to a large value. Further, in order to improve dripping marks and seizure characteristics, it is preferable to set the content range in the middle.

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

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

（式中、Ｒ^{Ｎ１１４１}及びＲ^{Ｎ１１４２}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、前記アルキル基中の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。）

^{(Wherein, R N1141} and ^{R N1142} represents an alkyl group having 1 to 8 carbon atoms independently, the one in the alkyl group or non-adjacent two or more -CH ₂ - are each independently —CH ＝ CH—, —C≡C—, —O—, —CO—, —COO— or —OCO—.

^RN1141 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and more preferably an ethyl group, a propyl group or a butyl group. ^RN1142 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 more preferably an ethoxy group, a propoxy group or a butoxy group.

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

  When the improvement of Δε is emphasized, the content is preferably set to a relatively large value. When the solubility at a low temperature is emphasized, the effect is high when the content is set to a relatively small value. The effect is high when set to a small value. Further, in order to improve dripping marks and seizure characteristics, it is preferable to set the content range in the middle.

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

  The compound represented by formula (N-1-15) is as follows.

（式中、Ｒ^{Ｎ１１５１}及びＲ^{Ｎ１１５２}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、前記アルキル基中の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。）

( ^Wherein , R ^N1151 and R ^N1152 each independently represent an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent —CH ₂ — in the alkyl group are each independently —CH ＝ CH—, —C≡C—, —O—, —CO—, —COO— or —OCO—.

^RN1151 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and more preferably an ethyl group, a propyl group or a butyl group. ^RN1152 is preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and more preferably an ethoxy group, a propoxy group or a butoxy group.

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

  When the improvement of Δε is emphasized, it is preferable to set the content higher. When the solubility at low temperature is emphasized, setting the content lower is more effective. When emphasizing Tni, the content is increased. The effect is high when set to a large value. Further, in order to improve dripping marks and seizure characteristics, it is preferable to set the content range in the middle.

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

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

（式中、Ｒ^{Ｎ１１６１}及びＲ^{Ｎ１１６２}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、前記アルキル基中の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。）

^{(Wherein, R N1161} and ^{R N1162} represents an alkyl group having 1 to 8 carbon atoms independently, the one in the alkyl group or non-adjacent two or more -CH ₂ - are each independently —CH ＝ CH—, —C≡C—, —O—, —CO—, —COO— or —OCO—.

^RN1161 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and more preferably an ethyl group, a propyl group or a butyl group. ^RN1162 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 more preferably an ethoxy group, a propoxy group or a butoxy group.

  The compound represented by formula (N-1-16) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they can be used in an appropriate combination according to the required properties such as solubility at low temperatures, transition temperature, electrical reliability, and birefringence. The kind of the compound used is, for example, one kind in one embodiment of the present invention, two kinds, three kinds, four kinds, five kinds or more.

  When the improvement of Δε is emphasized, the content is preferably set to a relatively large value. When the solubility at a low temperature is emphasized, the effect is high when the content is set to a relatively small value. The effect is high when set to a large value. Further, in order to improve dripping marks and seizure characteristics, it is preferable to set the content range in the middle.

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

  The compound represented by the general formula (N-1-17) is the following compound.

（式中、Ｒ^{Ｎ１１７１}及びＲ^{Ｎ１１７２}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、前記アルキル基中の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。）

( ^Wherein , R ^N1171 and R ^N1172 each independently represent an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent —CH ₂ — in the alkyl group are each independently —CH ＝ CH—, —C≡C—, —O—, —CO—, —COO— or —OCO—.

^RN1171 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and more preferably an ethyl group, a propyl group or a butyl group. ^RN1172 is preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and more preferably an ethoxy group, a propoxy group or a butoxy group.

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

  When the improvement of Δε is emphasized, the content is preferably set to a relatively large value. When the solubility at a low temperature is emphasized, the effect is high when the content is set to a relatively small value. The effect is high when set to a large value. Further, in order to improve dripping marks and seizure characteristics, it is preferable to set the content range in the middle.

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

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

（式中、Ｒ^{Ｎ１１８１}及びＲ^{Ｎ１１８２}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、前記アルキル基中の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。）

(Wherein, ^RN1181 and ^RN1182 each independently represent an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent —CH ₂ — in the alkyl group are each independently —CH ＝ CH—, —C≡C—, —O—, —CO—, —COO— or —OCO—.

^RN1181 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and more preferably a methyl group, an ethyl group, a propyl group, or a butyl group. ^{RN 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 more preferably an ethoxy group, a propoxy group or a butoxy group.

  The compound represented by formula (N-1-18) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they can be used in an appropriate combination according to the required properties such as solubility at low temperatures, transition temperature, electrical reliability, and birefringence. The kind of the compound used is, for example, one kind in one embodiment of the present invention, two kinds, three kinds, four kinds, five kinds or more.

  When the improvement of Δε is emphasized, it is preferable to set the content higher. When the solubility at low temperature is emphasized, setting the content lower is more effective. When emphasizing Tni, the content is increased. The effect is high when set to a large value. Further, in order to improve dripping marks and seizure characteristics, it is preferable to set the content range in the middle.

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

  Further, the compound represented by the general formula (N-1-18) is a compound selected from the group of compounds represented by the formula (N-1-18. 1) to the formula (N-1-18.5). It is preferable that they are compounds represented by formulas (N-1-18.1) to (N-1-18.3), and that the compounds represented by formulas (N-1-18.2) and (N-1-18.2) Compounds represented by 1-1-18.3) are preferred.

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

（式中、Ｒ^{Ｎ１２０１}及びＲ^{Ｎ１２０２}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、前記アルキル基中の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。）

(Wherein, ^RN1201 and ^RN1202 each independently represent an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent —CH ₂ — in the alkyl group are each independently —CH ＝ CH—, —C≡C—, —O—, —CO—, —COO— or —OCO—.

^RN1201 and ^RN1202 are each independently preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and more preferably an ethyl group, a propyl group or a butyl group.

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

  When the improvement of Δε is emphasized, the content is preferably set to a relatively large value. When the solubility at a low temperature is emphasized, the effect is high when the content is set to a relatively small value. The effect is high when set to a small value. Further, in order to improve dripping marks and seizure characteristics, it is preferable to set the content range in the middle.

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

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

（式中、Ｒ^{Ｎ１２１１}及びＲ^{Ｎ１２１２}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、前記アルキル基中の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。）

( ^Wherein , R ^N1211 and R ^N1212 each independently represent an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent —CH ₂ — in the alkyl group are each independently —CH ＝ CH—, —C≡C—, —O—, —CO—, —COO— or —OCO—.

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

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

  When the improvement of Δε is emphasized, it is preferable to set the content higher. When the solubility at low temperature is emphasized, setting the content lower is more effective. When emphasizing Tni, the content is increased. The effect is high when set to a large value. Further, in order to improve dripping marks and seizure characteristics, it is preferable to set the content range in the middle.

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

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

（式中、Ｒ^{Ｎ１２２１}及びＲ^{Ｎ１２２２}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、前記アルキル基中の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。）

^{(Wherein, R N1221} and ^{R N1222} represents an alkyl group having 1 to 8 carbon atoms independently, the one in the alkyl group or non-adjacent two or more -CH ₂ - are each independently —CH ＝ CH—, —C≡C—, —O—, —CO—, —COO— or —OCO—.

^RN1221 and ^RN1222 are each independently preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and more preferably an ethyl group, a propyl group or a butyl group.

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

  When the improvement of Δε is emphasized, the content is preferably set to a relatively large value. When the solubility at a low temperature is emphasized, the effect is high when the content is set to a relatively small value. The effect is high when set to a large value. Further, in order to improve dripping marks and seizure characteristics, it is preferable to set the content range in the middle.

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

  Further, the compounds represented by the general formula (N-1-22) include the compounds represented by the formulas (N-1-22.1) to (N-1-22.6) and (N-1-22.11). And a compound selected from the group of compounds represented by the formula (N-1-22.12), and represented by the formulas (N-1-22.1) to (N-1-22.5). And preferably compounds represented by formulas (N-1-22.1) to (N-1-22.4).

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

（式中、Ｒ^Ｎ３２１及びＲ^Ｎ３２２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、前記アルキル基中の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。）

( ^Wherein , R ^N321 and R ^N322 each independently represent an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent —CH ₂ — in the alkyl group are each independently —CH ＝ CH—, —C≡C—, —O—, —CO—, —COO— or —OCO—.

^RN321 and ^RN322 are preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and more preferably a propyl group or a pentyl group.

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

  When the improvement of Δε is emphasized, the content is preferably set to a relatively large value. When the solubility at a low temperature is emphasized, the effect is high when the content is set to a relatively small value. The effect is high when set to a large value. Further, in order to improve dripping marks and seizure characteristics, it is preferable to set the content range in the middle.

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

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

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

（式中、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、前記アルキル基中の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^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−に置き換えられてもよい。）
（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＝に置き換えられてもよい。）及び
（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）、基（ｂ）及び基（ｃ）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^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、それらは同一であっても異なっていてもよいが、一般式（ｉ）、（ｉｉ）、（Ｎ−１）、（Ｎ−２）、（Ｎ−１−１）、（Ｎ−１−２）及び（Ｎ−３）で表される化合物を除く。）

(Wherein, R ^L1 and R ^L2 each independently represent an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent —CH ₂ — in the alkyl group are each independently -CH = CH-, -C≡C-, -O-, -CO-, -COO- or -OCO-,
n ^L1 represents 0, 1, 2 or 3;
A ^{L1, A L2,} and ^{A L3} each independently (a) 1,4-cyclohexylene group (this is present in the group one -CH ₂ - or nonadjacent two or more -CH ₂ - May be replaced by -O-.)
(B) 1,4-phenylene group (one -CH = or two or more non-adjacent -CH = present in this group may be replaced by -N =) and (c) Naphthalene-2,6-diyl group, 1,2,3,4-tetrahydronaphthalene-2,6-diyl group or decahydronaphthalene-2,6-diyl group (naphthalene-2,6-diyl group or 1,2 , 3,4-tetrahydronaphthalene-2,6-diyl, one -CH = or two or more non-adjacent -CH = present in the group may be replaced by -N =.)
A hydrogen atom in the above groups (a), (b) and (c) may be each independently substituted by a cyano group, a fluorine atom or a chlorine atom ,
Z ^L1 and Z ^L2 each independently represent a single bond, —CH ₂ CH ₂ —, — (CH ₂ ) ₄ —, —OCH ₂ —, —CH ₂ O—, —COO—, —OCO—, —OCF _{2 -, - CF 2 O -,} - CH = N-N = CH -, - CH = CH -, - represents CF = CF- or -C≡C-,
When n ^L1 is 2 or 3 and a plurality of A ^L2 are present, they may be the same or different; when n ^L1 is 2 or 3 and a plurality of Z ^L2 are present, May be the same or different, but are represented by the general formulas (i), (ii), (N-1), (N-2), (N-1-1), and (N-1-2) And the compound represented by (N-3) are excluded. )

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

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

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

  When a composition having a high response speed is required while keeping the viscosity of the composition of the present invention low, the lower limit is preferably higher and the upper limit is preferably higher. Furthermore, when the composition of the present invention is required to have a high Tni and a composition having good temperature stability, the lower limit is preferably higher and the upper limit is preferably higher. When it is desired to increase the dielectric anisotropy in order to keep the driving voltage low, it is preferable that the above lower limit is lower and the upper limit is lower.

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

The number of halogen atoms present in the molecule is preferably 0, 1, 2 or 3, preferably 0 or 1, and 1 is preferred when emphasis is placed on compatibility with other liquid crystal molecules.
R ^L1 and R ^L2 each represent a linear alkyl group having 1 to 5 carbon atoms or a linear alkyl group having 1 to 4 carbon atoms when the ring structure to which they are bonded is a phenyl group (aromatic). Are preferred, and when the ring structure to which it is bonded is a saturated ring structure such as cyclohexane, pyran and dioxane, a linear C 1-5 alkenyl group is preferred. Alkyl groups, straight-chain alkoxy groups having 1 to 4 carbon atoms and straight-chain alkenyl groups having 2 to 5 carbon atoms are preferred. In order to stabilize the nematic phase, the total 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 of formulas (R1) to (R5). (The black dots in each formula represent carbon atoms in the ring structure.)

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

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

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

Z ^L1 and Z ^L2 are preferably single bonds when importance is placed on the response speed.

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

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

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

（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と同じ意味を表すが、一般式（ｉ）で表される化合物を除く。）

(Wherein, R ^L11 and R ^L12 each independently represent the same meaning as R ^L1 and R ^L2 in General Formula (L), except for the compound represented by General Formula (i).)

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

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

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

  When a composition having a high response speed is required while keeping the viscosity of the composition of the present invention low, the lower limit is preferably higher and the upper limit is preferably higher. Further, when the composition of the present invention is required to maintain a high Tni and have good temperature stability, the lower limit is preferably medium and the upper limit is preferably medium. When it is desired to increase the dielectric anisotropy in order to keep the drive voltage low, it is preferable that the lower limit is lower and the upper limit is lower.

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

（式中Ｒ^Ｌ１２は一般式（Ｌ−１）における意味と同じ意味を表すが、一般式（ｉ）で表される化合物を除く。）

(Wherein R ^L12 has the same meaning as in general formula (L-1), except for the compound represented by general formula (i).)

  The compound represented by formula (L-1-1) is a compound selected from the group of compounds represented by formula (L-1-1.1) to formula (L-1-1.3) Is preferable, and a compound represented by the formula (L-1-1.2) or the formula (L-1-1.3) is preferable, and particularly, a compound represented by the formula (L-1-1.3) Preferably, the compound is

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

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

（式中Ｒ^Ｌ１２は一般式（Ｌ−１）における意味と同じ意味を表すが、一般式（ｉ）で表される化合物を除く。）

(Wherein R ^L12 has the same meaning as in general formula (L-1), except for the compound represented by general formula (i).)

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

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

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

  Lower limit of the preferable total amount of the compound represented by the formula (L-1-2.3) and the compound represented by the formula (L-1-2.2) based on the total amount of the composition of the present invention. The values are 10%, 15%, 20%, 25%, 27%, 30%, 35% and 40%. The preferred upper limit of the content is 60%, 55%, 50%, 45%, 43%, 40%, 38% based on the total amount of the composition of the present invention. %, 35%, 32%, 30%, 27%, 25%, and 22%.

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

（式中Ｒ^Ｌ１３及びＲ^Ｌ１４はそれぞれ独立して、一般式（Ｌ）におけるＲ^Ｌ１及びＲ^Ｌ２と同じ意味を表すが、一般式（ｉ）で表される化合物を除く。）

(Wherein R ^L13 and R ^L14 each independently represent the same meaning as R ^L1 and R ^L2 in General Formula (L), except for the compound represented by General Formula (i).)

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

  The lower limit of the preferable content of the compound represented by the formula (L-1-3) relative to the total amount of the composition of the present invention is 1%, 5%, 7%, and 10%. , 13%, 15%, 17%, 20%, 23%, 25%, and 30%. The preferred upper limit of the content is 60%, 55%, 50%, 45%, 40%, 37%, 35%, or 60% based on the total amount of the composition of the present invention. %, 33%, 30%, 27%, 25%, 23%, 20%, 17%, 15%, 13%, 10% %.

  Further, the compounds represented by the general formula (L-1-3) include the compounds represented by the formulas (L-1-3.1) to (L-1-3.4) and the formula (L-1-3.11). ) Is preferably a compound selected from the group of compounds represented by the formula (L-1-3.13), and is preferably a compound represented by the formula (L-1-3.1), the formula (L-1-3.3) or The compound represented by the formula (L-1-3.4) is preferable. In particular, the compound represented by the formula (L-1-3.1) is preferable because it particularly improves the response speed of the composition of the present invention. When Tni higher than the response speed is obtained, the expression (L-1-3.3), the expression (L-1-3.4), the expression (L-1-3.11) and the expression (L- It is preferable to use the compound represented by 1-3.12). The sum of the compounds represented by the formulas (L-1-3.3), (L-1-3.4), (L-1-3.11), and (L-1-3.12) Is preferably not more than 20% in order to improve the solubility at low temperatures.

  The lower limit of the preferable content of the compound represented by Formulas (L-1-3.1) to (L-1-3.4) relative to the total amount of the composition of the present invention is 1%, 2%, 3%, 5%, 7%, 10%, 13%, 15%, 18% and 20%. The preferred upper limit of the content is 25%, 20%, 17%, 15%, 13%, 10%, 8%, or 25%, based on the total amount of the composition of the present invention. %, 7%, and 6%.

  The lower limit of the preferred content of the compounds represented by the formulas (L-1-3.11) to (L-1-3.13) relative to the total amount of the composition of the present invention is 1%, 2%, 3%, 5%, 7%, 10%, 13%, 15%, 18% and 20%. The preferred upper limit of the content is 20%, 17%, 15%, 13%, 10%, 8%, and 7% based on the total amount of the composition of the present invention. % And 6%.

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

（式中Ｒ^Ｌ１５及びＲ^Ｌ１６はそれぞれ独立して、一般式（Ｌ）におけるＲ^Ｌ１及びＲ^Ｌ２と同じ意味を表すが、一般式（ｉ）で表される化合物を除く。）

(Wherein R ^L15 and R ^L16 each independently represent the same meaning as R ^L1 and R ^L2 in General Formula (L), except for the compound represented by General Formula (i).)

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

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

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

  Further, the compounds represented by the general formulas (L-1-4) and (L-1-5) include the compounds represented by the formulas (L-1-4.1) to (L-1-4.3) and the formulas (L-1-4.3). It is preferably a compound selected from the group of compounds represented by formula (L-1-5.3) from (L-1-5.1), and is preferably a compound selected from formula (L-1-4.2) or formula (L It is preferably a compound represented by -1-5.2).

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

  Formula (L-1-1.3), Formula (L-1-2.2), Formula (L-1-3.1), Formula (L-1-3.3), Formula (L-1- 3.4), it is preferable to combine two or more compounds selected from the group consisting of the compounds represented by the formulas (L-1-3.11) and (L-1-3.12), L-1-1.3), Formula (L-1-2.2), Formula (L-1-3.1), Formula (L-1-3.3), Formula (L-1-3. It is preferable to combine two or more compounds selected from the group consisting of 4) and a compound represented by the formula (L-1-4.2), and the lower limit of the preferable content of the total content of these compounds is 1%, 2%, 3%, 5%, 7%, 10%, 13%, and 15% of the total amount of the composition of the present invention. Yes, 18%, 20% Is 23%, 25%, 27%, 30%, 33%, 35%, and the upper limit is 80% with respect to the total amount of the composition of the present invention. Yes, 70%, 60%, 50%, 45%, 40%, 37%, 35%, 33%, 30%, 28% Yes, 25%, 23%, 20%. When importance is placed on the reliability of the composition, the compounds represented by the 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 the group consisting of the following formulas. When importance is placed on the response speed of the composition, the formulas (L-1-1.3) and (L-1-2.2) It is preferable to combine two or more compounds selected from the group consisting of the compounds represented by

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

（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。）

(In the formula, R ^L21 and R ^L22 each independently represent the same meaning as R ^L1 and R ^L2 in 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 formulas 1 to 4 are preferred.

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

  When importance is placed on solubility at low temperatures, a higher content is more effective. Conversely, when response speed is more important, a lower content is more effective. Further, in order to improve dripping marks and seizure characteristics, it is preferable to set the content range in the middle.

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

  Further, 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), Compounds represented by formula (L-2.1), formula (L-2.3), formula (L-2.4) and formula (L-2.6) are preferred.

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

（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。）

(In the formula, R ^L31 and R ^L32 each independently represent the same meaning as R ^L1 and R ^L2 in 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 formula (L-3) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they can be used in an appropriate combination according to the required properties such as solubility at low temperatures, transition temperature, electrical reliability, and birefringence. The kind of the compound used is, for example, one kind in one embodiment of the present invention, two kinds, three kinds, four kinds, five kinds or more.

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

  When a high birefringence is to be obtained, the effect is high when the content is set high, and when the Tni is emphasized, the effect is high when the content is set low. Further, in order to improve dripping marks and seizure characteristics, it is preferable to set the content range in the middle.

  Further, the compound represented by the general formula (L-3) includes a compound represented by the formula (L-3.1) to the formula (L-3.4) and a compound represented by the formula (L-3.6): It is preferably a compound selected from the group of compounds represented by 7), and is a compound represented by formulas (L-3.1) to (L-3.4) and (L-3.6). Preferably, there is.

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

（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。）

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

^RL41 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and ^RL42 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 formulas 1 to 4 are preferred. )

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

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

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

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

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

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

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

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

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

  When both the compound represented by the formula (L-4.4) and the compound represented by the formula (L-4.5) are contained, the content of the both compounds is based on the total amount of the composition of the present invention. The preferred lower limit of the content is 1%, 3%, 5%, 7%, 9%, 11%, 15%, and the preferred upper limit is 45%. Yes, 40%, 35%, 30%, 25%, 23%, 20%, 18%, 15%, 13%.

  The compound represented by the general formula (L-4) is preferably a compound represented by the formula (L-4.7) to the formula (L-4.11), and particularly preferably the compound represented by the formula (L-4. 8) and the compound represented by the formula (L-4.11) are preferred.

  When the compound represented by the formula (L-4.8) or the compound represented by the formula (L-4.11) is contained, the compound represented by the formula (L-4. The lower limit of the preferred content of the compound represented by 11) is 1%, 3%, 5%, 7%, 9%, 11%, and 12%. , 13%, 18%, 21%, and the preferred upper limit is 45, 40%, 35%, 30%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%.

  The compound represented by formula (L-5) is as follows.

（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。）

(In the formula, R ^L51 and R ^L52 each independently represent the same meaning as R ^L1 and R ^L2 in 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 formula (L-5) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they can be used in an appropriate combination according to the required properties such as solubility at low temperatures, transition temperature, electrical reliability, and birefringence. The kind of the compound used is, for example, one kind in one embodiment of the present invention, two kinds, three kinds, four kinds, five kinds or more.

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

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

  The compound represented by the formula (L-5) is preferably a compound represented by the formula (L-5.1) or the formula (L-5.2), and particularly preferably the compound represented by the formula (L-5. The compound represented by 1) is preferred.

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

The compound represented by the general formula (L-5) is preferably a compound represented by the formula (L-5.3) or the formula (L-5.4).
The lower limit of the preferable content of these compounds based on the total amount of the composition of the present invention is 1%, 2%, 3%, 5%, and 7%. The upper limit of the preferable content of these compounds is 20%, 15%, 13%, 10%, and 9%.

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

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

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

（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が、一般式（Ｎ−１）で表される化合物を除く。）

(Wherein, R ^L61 and R ^L62 each independently represent the same meaning as R ^L1 and R ^L2 in the general formula (L), and X ^L61 and X ^L62 each independently represent a hydrogen atom or a fluorine atom. , Excluding the compound represented by the general formula (N-1).)

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

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

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

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

  There are no particular restrictions on the types of compounds that can be combined, but one to three of these compounds are preferred, and one to four are more preferred. Further, since the wide molecular weight distribution of the selected compound is also effective for solubility, for example, one kind of the compound represented by the formula (L-6.1) or (L-6.2), 6.4) or one kind of the compound represented by (L-6.5), and one kind of the compound represented by the formula (L-6.6) or (L-6.7), one kind of the compound represented by the formula (L It is preferable to select one kind of compound from the compounds represented by -6.8) or (L-6.9) and appropriately combine them. Among them, it is preferable to include compounds represented by the formula (L-6.1), the formula (L-6.2), the formula (L-6.4), and the formula (L-6.5).

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

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

  The compound represented by formula (L-7) is as follows.

^{(Wherein, R L71} and ^{R L72} each independently represent the same meaning as ^{R L1} and ^{R L2} in Formula ^{(L), A L71} and ^{A L72} is ^{A L2} and in the general formula (L) independently Represents the same meaning as A ^L3 , but the hydrogen atoms on A ^L71 and A ^L72 may be each independently substituted by a fluorine atom, and Z ^L71 represents the same meaning as Z ^L2 in formula (L); X ^L71 and X ^L72 each independently represent a fluorine atom or a hydrogen atom, except for the compound represented by the general formula (N-1).

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} preferably each independently a 1,4-cyclohexylene group or a 1,4-phenylene group, the hydrogen atoms on A ^L71 and A ^L72 may be each independently substituted by fluorine atoms, and Z ^L71 is A bond or COO— is preferable, a single bond is preferable, and X ^L71 and X ^L72 are preferably a hydrogen atom.

  There are no particular restrictions on the types of compounds that can be combined, but the compounds are combined according to the required properties such as solubility at low temperatures, transition temperature, electrical reliability, and birefringence. The kind of the compound to be used is, for example, one kind in one embodiment of the present invention, two kinds, three kinds, and four kinds.

In the composition of the present invention, the content of the compound represented by the general formula (L-7) includes solubility at a low temperature, transition temperature, electrical reliability, birefringence, process suitability, drop marks, It is necessary to appropriately adjust according to required performance such as image sticking and dielectric anisotropy.
The lower limit of the preferable content of the compound represented by the formula (L-7) relative to the total amount of the composition of the present invention is 1%, 2%, 3%, or 5%. , 7%, 10%, 14%, 16%, and 20%. The upper limit of the preferable content of the compound represented by the formula (L-7) relative to the total amount of the composition of the present invention is 30%, 25%, 23%, and 20%. , 18%, 15%, 10%, 5%.

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

  Further, the compound represented by the general formula (L-7) is preferably a compound represented by the formula (L-7.1) to the formula (L-7.4), and more preferably the compound represented by the formula (L-7. The compound represented by 2) is preferred.

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

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

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

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

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

  The formulas (i), (N-1-1), (N-1-2), (ii), (L) and (N-1) to (N-) based on the total amount of the composition of the present invention. The lower limit of the total preferable content of the compound represented by 3) is 80%, 85%, 88%, 90%, 92%, 93%, and 94%. , 95%, 96%, 97%, 98%, 99%, and 100%. The upper limit of the preferred content is 100%, 99%, 98%, and 95%.

  The general formulas (i), (N-1-1), (N-1-2), (ii), (L-1) to (L-7), and the total amount of the composition of the present invention. The lower limit of the preferable total content of the compounds represented by (N-1) to (N-3) is 80%, 85%, 88%, 90%, and 92%. Yes, 93%, 94%, 95%, 96%, 97%, 98%, 99%, 100%. The upper limit of the preferred content is 100%, 99%, 98%, and 95%.

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

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

  When importance is placed on the stability due to UV irradiation, the content of the compound substituted with a chlorine atom is preferably 15% or less, more preferably 10% or less, based on the total mass of the composition. %, Preferably 5% or less, more preferably 3% or less, even more preferably substantially not contained.

  It is preferable to increase the content of the compound in which all the ring structures in the molecule are 6-membered rings, and the content of the compound in which the ring structure in the molecule is all 6-membered rings is 80 to the total mass of the composition. % Or more, more preferably 90% or more, and even more preferably 95% or more, and the composition is composed of only a compound having substantially all six-membered ring structures in the molecule. Is most preferred.

  In order to suppress deterioration due to oxidation of the composition, it is preferable to reduce the content of the compound having a cyclohexenylene group as a ring structure, and the content of the compound having a cyclohexenylene group is determined based on the total mass of the composition. On the other hand, it is preferably at most 10%, more preferably at most 8%, more preferably at most 5%, more preferably at most 3%, even more preferably substantially free of.

  When emphasis is placed on improving the viscosity and the Tni, it is necessary to reduce the content of a compound having a 2-methylbenzene-1,4-diyl group in which a hydrogen atom may be substituted with a halogen in the molecule. Preferably, the content of the compound having a 2-methylbenzene-1,4-diyl group in a molecule is preferably 10% or less, more preferably 8% or less, based on the total mass of the composition. It is more preferably at most 5%, more preferably at most 3%, even more preferably substantially free of.

  When emphasis is placed on viscosity and dielectric anisotropy, the content of a liquid crystal compound in which a hydrogen atom in an alkyl group, an alkenyl group, an alkoxy group or an alkenyloxy group that is a side chain is substituted by fluorine is reduced. Preferably, the content is preferably 10% or less, more preferably 8% or less, preferably 5% or less, and more preferably 3% or less based on the total mass of the composition. Is more preferably not substantially contained.

When emphasizing the viscosity and refractive index anisotropy, it is preferred that the linking group is reduced content of -O-CH 2 _-CH 2 _-O- in which liquid crystal compound, wherein the content of said compound composition The content is preferably 10% or less, more preferably 8% or less, preferably 5% or less, and more preferably 3% or less with respect to the total mass of the product, and substantially not contained. More preferred.

  In the present application, “substantially not contained” means that it is not contained except for those that are unintentionally contained.

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

  The preferred lower limit of Tni of the liquid crystal composition of the present invention is 50 ° C, 55 ° C, 60 ° C, 65 ° C, 70 ° C, 75 ° C, 80 ° C, 85 ° C. And 90 ° C. The preferred upper limit of Tni of the liquid crystal composition of the present invention is 130 ° C, 125 ° C, 120 ° C, 115 ° C, 110 ° C, 105 ° C, 100 ° C, 95 ° C. 90 ° C., 85 ° C., 80 ° C.

  The preferred lower limit of Δn of the liquid crystal composition of the present invention is 0.080, 0.085, 0.090, 0.095, 0.100, 0.105, 0 .110. The preferred upper limit of Δn of the liquid crystal composition of the present invention is 0.130, 0.125, 0.120, 0.115, 0.110, 0.105, and 0. .100.

  Preferred lower limits of Δε of the liquid crystal composition of the present invention are −5.5, −5.0, −4.5, −4.0, −3.5, −3. 0.0 and -2.5. Preferred upper limits of Δε of the liquid crystal composition of the present invention are −2.2, −2.5, −2.8, −3.1, and −3.4.

Preferred lower limit of the gamma ₁ of the liquid crystal composition of the present invention is 40 mPa · s, a 45 mPa · s, a 50 mPa · s, a 55 mPa · s, a 60 mPa · s, a 65 mPa · s, 70 mPa · s. Preferred upper limit of the gamma ₁ of the liquid crystal composition of the present invention is 200 mPa · s, a 150 mPa · s, a 140 mPa · s, a 130 mPa · s, a 120 mPa · s, a 110 mPa · s, It is 100 mPa · s, 95 mPa · s, and 90 mPa · s.

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

  The composition of the present invention can contain a polymerizable compound in order to produce a liquid crystal display device of a PS mode, a PSA mode, a PSVA mode, a horizontal electric field type PSA mode, or a horizontal electric field type PSVA mode. Examples of the polymerizable compound that can be used include a photopolymerizable monomer that undergoes polymerization by energy rays such as light, and have a liquid crystal skeleton in which a plurality of six-membered rings such as biphenyl derivatives and terphenyl derivatives are connected. And polymerizable compounds. More specifically, the general formula (XX)

（式中、Ｘ^２０１及びＸ^２０２はそれぞれ独立して、水素原子又はメチル基を表し、
Ｓｐ^２０１及びＳｐ^２０２はそれぞれ独立して、単結合、炭素原子数１〜８のアルキレン基又は−Ｏ−（ＣＨ_２）_ｓ−（式中、ｓは２から７の整数を表し、酸素原子は芳香環に結合するものとする。）が好ましく、
Ｚ^２０１は−ＯＣＨ_２−、−ＣＨ_２Ｏ−、−ＣＯＯ−、−ＯＣＯ−、−ＣＦ_２Ｏ−、−ＯＣＦ_２−、−ＣＨ_２ＣＨ_２−、−ＣＦ_２ＣＦ_２−、−ＣＨ＝ＣＨ−ＣＯＯ−、−ＣＨ＝ＣＨ−ＯＣＯ−、−ＣＯＯ−ＣＨ＝ＣＨ−、−ＯＣＯ−ＣＨ＝ＣＨ−、−ＣＯＯ−ＣＨ_２ＣＨ_２−、−ＯＣＯ−ＣＨ_２ＣＨ_２−、−ＣＨ_２ＣＨ_２−ＣＯＯ−、−ＣＨ_２ＣＨ_２−ＯＣＯ−、−ＣＯＯ−ＣＨ_２−、−ＯＣＯ−ＣＨ_２−、−ＣＨ_２−ＣＯＯ−、−ＣＨ_２−ＯＣＯ−、−ＣＹ^１＝ＣＹ^２−（式中、Ｙ^１及びＹ^２はそれぞれ独立して、フッ素原子又は水素原子を表す。）、−Ｃ≡Ｃ−又は単結合を表し、
Ｌ^２０１およびＬ^２０２はそれぞれ独立して、フッ素原子、炭素原子数１〜８のアルキル基又は炭素原子数１〜８のアルコキシ基であり、
Ｍ^２０１は１，４−フェニレン基、トランス−１，４−シクロヘキシレン基又は単結合を表し、式中の全ての１，４−フェニレン基は、任意の水素原子がフッ素原子により置換されていてもよく、
ｎ^２０１及びｎ^２０２はそれぞれ独立して、０〜４の整数である。）で表される二官能モノマーが好ましい。

(Wherein X ²⁰¹ and X ²⁰² each independently represent a hydrogen atom or a methyl group;
Sp ²⁰¹ and Sp ²⁰² are each independently a single bond, an alkylene group having 1 to 8 carbon atoms or —O— (CH ₂ ) _s — (wherein, s represents an integer of 2 to 7, and an oxygen atom is Is preferably bonded to an aromatic ring).
Z ²⁰¹ is _{-OCH 2 -, - CH 2 O} -, - COO -, - OCO -, - CF 2 O -, - OCF 2 -, - CH 2 CH 2 -, - CF 2 CF 2 -, - CH = CH-COO -, - CH = CH-OCO -, - COO-CH = CH -, - OCO-CH = CH -, - COO-CH 2 CH 2 -, - OCO-CH 2 CH 2 -, - CH 2 _{CH 2 -COO -, - CH 2} CH 2 -OCO -, - COO-CH 2 -, - OCO-CH 2 -, - CH 2 -COO -, - CH 2 -OCO -, - CY 1 = CY 2 - (Wherein, Y ¹ and Y ² each independently represent a fluorine atom or a hydrogen atom.), —C≡C— or a single bond;
L ²⁰¹ and L ²⁰² are each independently a fluorine atom, an alkyl group having 1 to 8 carbon atoms or an alkoxy group having 1 to 8 carbon atoms,
M ²⁰¹ represents a 1,4-phenylene group, a trans-1,4-cyclohexylene group or a single bond, and all 1,4-phenylene groups in the formula have an arbitrary hydrogen atom substituted by a fluorine atom. Well,
n ²⁰¹ and n ²⁰² are each independently an integer of 0 to 4. )) Are preferred.

Each of X ²⁰¹ and X ²⁰² is preferably a diacrylate derivative each representing a hydrogen atom, or both a dimethacrylate derivative having a methyl group, and a compound wherein one represents a hydrogen atom and the other represents a methyl group is also preferred. The polymerization rate of these compounds is the fastest for the diacrylate derivative, the slowest for the dimethacrylate derivative, and the middle for the asymmetric compound, and a preferred embodiment can be used depending on the application. In PSA display elements, dimethacrylate derivatives are particularly preferred.

Sp ²⁰¹ and Sp ²⁰² each independently represent a single bond, an alkylene group having 1 to 8 carbon atoms, or —O— (CH ₂ ) _s —, but at least one of them is a single bond in a PSA display element. preferably, the compound or one of the other by a single bond or an alkylene group having 1 to 8 carbon atoms -O- (CH ₂₎ both represent a single bond s _- aspects that represent preferred. In this case, 1 to 4 alkyl groups are preferable, and s is preferably 1 to 4.

Z ²⁰¹ represents —OCH ₂ —, —CH ₂ O—, —COO—, —OCO—, —CF ₂ O—, —OCF ₂ —, —CH ₂ CH ₂ —, —CF ₂ CF ₂ — or a single bond. Is preferable, -COO-, -OCO- or a single bond is more preferable, and a single bond is particularly preferable.

M ²⁰¹ represents a 1,4-phenylene group, a trans-1,4-cyclohexylene group or a single bond in which an arbitrary hydrogen atom may be substituted by a fluorine atom, and a 1,4-phenylene group or a single bond is preferred. preferable. When C represents a ring structure other than a single bond, Z ²⁰¹ is preferably a linking group other than a single bond, and when M ²⁰¹ is a single bond, Z ²⁰¹ is preferably a single bond.

From these points, in the general formula (XX), the ring structure between Sp ²⁰¹ and Sp ²⁰² is specifically preferably the following structure.

In the general formula (XX), when M ²⁰¹ represents a single bond and the ring structure is formed of two rings, it is preferable to represent the following formulas (XXa-1) to (XXa-5), It is more preferable to represent Formula (XXa-3) from (XXa-1), and it is particularly preferable to represent Formula (XXa-1).

（式中、両端はＳｐ^２０１又はＳｐ^２０２に結合するものとする。）

(In the formula, both ends are bonded to Sp ²⁰¹ or Sp ^202. )

  The polymerizable compound containing such a skeleton has an alignment regulating force after polymerization that is optimal for a PSA-type liquid crystal display element, and a good alignment state is obtained, so that display unevenness is suppressed or does not occur at all.

  From the above, as the polymerizable monomer, general formulas (XX-1) to (XX-4) are particularly preferable, and among them, general formula (XX-2) is most preferable.

（式中、ベンゼンはフッ素原子により置換されていても良く、Ｓｐ^２０は炭素原子数２から５のアルキレン基を表す。）

(In the formula, benzene may be substituted by a fluorine atom, and Sp ²⁰ represents an alkylene group having 2 to 5 carbon atoms.)

  When a monomer is added to the composition of the present invention, the polymerization proceeds even in the absence of a polymerization initiator, but the composition may contain a polymerization initiator to promote the polymerization. Examples of the polymerization initiator include benzoin ethers, benzophenones, acetophenones, benzyl ketals, acylphosphine oxides, and the like.

  When the liquid crystal composition of the present invention contains a polymerizable compound, the content of the polymerizable compound is 0.001 to 5% by mass, 0.001 to 3% by mass, and 0 to 100% by mass of the liquid crystal composition. It is preferably 0.001 to 2% by mass, or 0.001 to 1% by mass.

  The composition of the present invention may further contain a compound represented by the general formula (Q).

（式中、Ｒ^Ｑは炭素原子数１から２２の直鎖アルキル基又は分岐鎖アルキル基を表し、該アルキル基中の１つ又は２つ以上のＣＨ_２基は、酸素原子が直接隣接しないように、−Ｏ−、−ＣＨ＝ＣＨ−、−ＣＯ−、−ＯＣＯ−、−ＣＯＯ−、−Ｃ≡Ｃ−、−ＣＦ_２Ｏ−、−ＯＣＦ_２−で置換されてよく、Ｍ^Ｑはトランス−１，４−シクロへキシレン基、１，４−フェニレン基又は単結合を表す。）

(In the formula, R ^Q represents a straight-chain alkyl group or a branched-chain alkyl group having 1 to 22 carbon atoms, and one or more CH ₂ groups in the alkyl group are such that an oxygen atom is not directly adjacent. a, -O -, - CH = CH -, - CO -, - OCO -, - COO -, - C≡C -, - CF 2 O -, - OCF 2 - may be replaced by, ^{M Q} is trans Represents a 1,4-cyclohexylene group, a 1,4-phenylene group or a single bond.)

R ^Q represents a straight-chain or branched-chain alkyl group having 1 to 22 carbon atoms, and one or more CH ₂ groups in the alkyl group are each —O, so that an oxygen atom is not directly adjacent. -, - CH = CH -, - CO -, - OCO -, - COO -, - C≡C -, - CF 2 O -, - OCF 2 - may be substituted with, but 1 to 10 carbon atoms A linear alkyl group, a linear alkoxy group, a linear alkyl group in which one CH ₂ group is substituted with —OCO— or —COO—, a branched alkyl group, a branched alkoxy group, and one CH ₂ group is —OCO— or branched-chain alkyl group is preferable substituted with -COO-, linear alkyl group having 1 to 20 carbon atoms, one straight chain alkyl group CH ₂ group is substituted -OCO- or -COO- in the branch Chain alkyl group, branched alkoxy group, one CH ₂ group Is more preferably a branched chain alkyl group substituted with -OCO- or -COO-. ^MQ represents a trans-1,4-cyclohexylene group, a 1,4-phenylene group or a single bond, preferably a trans-1,4-cyclohexylene group or a 1,4-phenylene group.

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

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

  The composition of the present invention preferably contains one or two kinds of the compound represented by the general formula (Q), more preferably contains 1 to 5 kinds, and its content is from 0.001 to 0.001. It is preferably 1%, more preferably 0.001 to 0.1%, and particularly preferably 0.001 to 0.05%.

  Further, more specifically, compounds represented by the following (III-1) to (III-40) are preferable as antioxidants or light stabilizers that can be used in the present invention.

（式中、ｎは０から２０の整数を表す。）

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

（式中、ｎは０から２０の整数を表す。）

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

（式中、ｎは０から２０の整数を表す。）

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

  The composition of the present invention preferably contains one or two or more compounds represented by the general formula (Q) or compounds selected from the general formulas (III-1) to (III-40). The content is more preferably from 0.001 to 1%, more preferably from 0.001 to 0.1%, particularly preferably from 0.001 to 0.05%.

  In the present invention, a composition containing a polymerizable compound is provided with a liquid crystal alignment ability by polymerizing the polymerizable compound contained therein by irradiation with ultraviolet light, and reduces the amount of transmitted light using the birefringence of the composition. Used for controlling liquid crystal display elements.

<< Liquid crystal display element >>
The liquid crystal display device of the present invention is characterized by using the above-mentioned liquid crystal composition of the present invention.
For example, FIG. 1 is a cross-sectional view schematically showing a main part of a cell of an embodiment of the liquid crystal display device of the present invention. As the liquid crystal display element of the present invention, there is a VA liquid crystal display element having a cell similar to that shown in FIG.

The cell 2C shown here includes a pair of substrates, a first substrate 23 and a second substrate 24. A first electrode 231 and a first alignment film 232 are stacked in this order on the surface of the first substrate 23 facing (opposing) the second substrate 24 toward the second substrate 24. A second electrode 241 and a second alignment film 242 are stacked on the surface of the second substrate 24 facing (facing) the first substrate 23 in this order toward the first substrate 23. In the cell 2C, a liquid crystal composition can be sandwiched between the first substrate 23 and the second substrate 24. Then, the first alignment film 232 and the second alignment film 242 control the alignment state of the sandwiched liquid crystal composition.
1, reference numeral _{d 3} denotes a cell gap in the cell 2C.

  Note that the cells shown in FIG. 1 are only some examples of the cells that can be used in the present invention, and the cells that can be used in the present invention are not limited to these. For example, various modifications of these cells can be used in the present invention without departing from the spirit of the present invention.

In addition, as the liquid crystal display element of the present invention, an IPS (in-plane switching) type or FFS (fringe field switching) type liquid crystal display element including the cell shown in FIG. 2 or FIG. .
The liquid crystal display device of the present invention can have the same configuration as a known liquid crystal display device except that the liquid crystal composition has the above-described liquid crystal composition of the present invention.
Hereinafter, the cells shown in FIGS. 2 and 3 will be described in detail.

FIG. 2 is a sectional view schematically showing a main part of one embodiment of a cell used in the liquid crystal display device of the present invention.
The cell 2A shown here includes a pair of substrates, a first substrate 21 and a second substrate 22. On the surface of the first substrate 21 facing (opposing) the second substrate 22, first electrodes 211A and second electrodes 212A are alternately arranged. Here, a case is shown in which the first electrode 211A corresponds to a positive pole and the second electrode 212A corresponds to a negative pole. In the cell 2A, a liquid crystal composition can be sandwiched between the first substrate 21 and the second substrate 22.

Cells 2A, the cell gap _{d 1,} electrode width _{W 1} of the first electrode 211A and the second electrode 212A, the inter-electrode distance _{L 1} of the first electrode 211A and the second electrode 212A _is, L 1 _{/ d} 1> 1 and L ₁ / W ₁ > 1 is satisfied, the inter-electrode distance L ₁ is larger than the cell gap d ₁ and the electrode width W ₁ , and the first electrode 211A and the second electrode 212A do not have a structure close to each other. And has an electrode configuration used in an IPS type liquid crystal display device.

  FIG. 3 is a sectional view schematically showing a main part of another embodiment of the cell used in the liquid crystal display element of the present invention. Note that among the components illustrated in FIG. 3, the same components as those illustrated in FIG. 2 are denoted by the same reference numerals as in FIG. 2, and detailed description thereof will be omitted.

The cell 2B shown here includes a pair of substrates, a first substrate 21 and a second substrate 22. On the surface of the first substrate 21 facing the second substrate 22, the second electrode 212 </ b> B and the insulating layer 213 are laminated in this order toward the second substrate 22, and further the insulating layer 213 faces the second substrate 22. A plurality of first electrodes 211B are arranged on the surface to be separated at a predetermined interval. Here, a case is shown in which the first electrode 211B corresponds to a positive pole and the second electrode 212B corresponds to a negative pole. In the cell 2B, a liquid crystal composition can be sandwiched between the first substrate 21 and the second substrate 22.
In the cell 2B, the cell gap d ₂ and the electrode width W ₂ of the first electrode 211B can be, for example, the same as d ₁ and W ₁ in the cell 2A, respectively. Cell 2B is a inter-electrode distance _{L 1} to 0 (zero) in it were cells 2A, has a structure formed by laminating a first electrode 211B and the second electrode 212B via the insulating layer 213, FFS type liquid crystal display It has an electrode configuration used in the device.

  In particular, in the cell 2B of the FFS type, in addition to the direction (lateral direction) parallel to the surface of the first substrate 21 and the second substrate 22, the direction perpendicular to the surface of the first substrate 21 and the second substrate 22 An electric field is also generated (vertically). In particular, a strong electric field is generated in the vertical direction in a region near the side surface of the first electrode 211B. In this case, unlike the cell used in the IPS type liquid crystal display element, not only the liquid crystal molecules located between the electrodes (between the first electrode 211B and the second electrode 212B) but also on the electrodes (on the first electrode 211B and the second electrode 212B). The liquid crystal molecules located on the two electrodes 212B) are also driven more strongly. Therefore, in such a cell 2B, since the first electrode 211B and the second electrode 212B are each formed of a transparent electrode, a display function can be exhibited even in these electrode portions, and a liquid crystal display device including such a cell is provided. Can increase the aperture ratio.

  Note that the cells shown in FIGS. 1, 2 and 3 are only some examples of the cells that can be used in the liquid crystal display device of the present invention, and the cells that can be used in the liquid crystal display device are not limited thereto. For example, cells obtained by adding various changes to the cells shown in FIGS. 1, 2 and 3 can be used.

  FIG. 4 is a view schematically showing one embodiment of the liquid crystal display device of the present invention. In FIG. 4, for convenience, each component is separately illustrated for convenience. The liquid crystal display element 10 shown here includes a first transparent insulating substrate (hereinafter, may be abbreviated as “first substrate”) 12 having an alignment film 14 formed on the surface thereof, and is separated from the first substrate. A second transparent insulating substrate (hereinafter, may be abbreviated as “second substrate”) 17 provided and having an alignment film 14 formed on the surface thereof, and is filled between the first substrate 12 and the second substrate 17. And a liquid crystal layer 15 in contact with the pair of alignment films, and an electrode layer 13 including a thin film transistor, a common electrode 122 and a pixel electrode 121 as an active element between the alignment film 14 and the first substrate 12. have.

As shown in FIG. 4, the liquid crystal display element 10 includes a first substrate 12 and a second substrate 17 which are arranged to face each other, and sandwiches a liquid crystal layer 15 containing the liquid crystal composition therebetween. The liquid crystal display element is of an electric field type (here, as an example, an FPS type which is a modification of the IPS type). The electrode layer 13 is formed on the surface of the first substrate 12 on the liquid crystal layer 15 side. In addition, a pair of liquid crystal layers 15 and the second substrate 17 and a pair of liquid crystal layers 15 and the second substrate 17 which directly contact the liquid crystal composition constituting the liquid crystal layer 15 to induce a homogeneous alignment. The alignment directions of the alignment films 14 are substantially parallel to the surface of the first substrate 12 or the second substrate 17. That is, the liquid crystal molecules in the liquid crystal composition are aligned so as to be substantially parallel to the surface of the first substrate 12 or the second substrate 17 when no voltage is applied. As shown in FIGS. 4 and 6, the first substrate 12 and the second substrate 17 may be sandwiched between a pair of polarizing plates 11 and 18. Further, as shown in FIGS. 4 and 6, a color filter 16 is provided between the second substrate 17 and the alignment film 14. Note that the liquid crystal display element of the present invention may be a so-called color filter on array (COA), a color filter may be provided between an electrode layer including a thin film transistor and a liquid crystal layer, or the liquid crystal display element may include the thin film transistor. A color filter may be provided between the electrode layer and the second substrate.
The liquid crystal display element 10 shown here includes a first polarizing plate 11, a first substrate 12, an electrode layer 13 including a thin film transistor, an alignment film 14, a liquid crystal layer 15 including the liquid crystal composition, and an alignment film 14. , A color filter 16, a second substrate 17, and a second polarizing plate 18 are sequentially laminated.

  The first substrate 12 and the second substrate 17 can be made of a flexible and transparent insulating material such as glass or plastic, and one is made of an opaque insulating material such as silicon. You may. The first substrate 12 and the second substrate 17 are attached to each other with a sealing material and a sealing material such as an epoxy-based thermosetting composition disposed in a 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 a resin formed by photolithography may be provided.

FIG. 5 is an enlarged plan view showing a region surrounded by line II of the electrode layer 13 formed on the first substrate 12 in FIG. FIG. 6 is a cross-sectional view of the liquid crystal display device shown in FIG. 4 cut along the line III-III in FIG. As shown in FIG. 5, the electrode layer 13 including the thin film transistor formed on the surface of the first substrate 12 includes a plurality of gate lines 126 for supplying a scanning signal and a plurality of source lines for supplying a display signal. 125 are arranged in a matrix so as to cross each other. Note that FIG. 5 shows only a pair of gate wirings 126 and a pair of source wirings 125.
A unit pixel of the liquid crystal display device is formed by a region surrounded by the plurality of gate lines 126 and the plurality of source lines 125, and a pixel electrode 121 and a common electrode 122 are formed in the unit pixel. A thin film transistor including a source electrode 127, a drain electrode 124, and a gate electrode 128 is provided near an intersection between the gate wiring 126 and the source wiring 125. This thin film transistor is connected to the pixel electrode 121 as a switch element for supplying a display signal to the pixel electrode 121, and drives the pixel electrode 121. In addition, a common line 129 is provided in parallel with the gate wiring 126. The common line 129 is connected to the common electrode 122 to supply a common signal to the common electrode 122.

  One preferred embodiment of the structure of the thin film transistor is, for example, as shown in FIG. 6, a gate electrode 111 formed on the surface of the first substrate 12, and a substantially entire surface of the first substrate 12 covering the gate electrode 111. A gate insulating layer 112 provided so as to cover the semiconductor layer 113; a semiconductor layer 113 formed over the surface of the gate insulating layer 112 so as to face the gate electrode 111; and a protection layer provided so as to cover part of the surface of the semiconductor layer 113. A layer 114, a drain electrode 116 covering one side edge of the protective layer 114 and the semiconductor layer 113, and provided to be in contact with a gate insulating layer 112 formed on the surface of the first substrate 12; A source electrode 117 provided to cover the other end of the semiconductor layer 114 and the semiconductor layer 113 and to be in contact with the gate insulating layer 112 formed on the surface of the first substrate 12; Has a down electrode 116 and the insulating protective layer 118 provided so as to cover the source electrode 117, a. In the thin film transistor, an anodic oxide film (not shown) may be formed on the surface of the gate electrode 111, for example, to eliminate a step from the gate electrode.

For the semiconductor layer 113, amorphous silicon, polycrystalline polysilicon, or the like can be used. When a transparent semiconductor film such as ZnO, IGZO (In-Ga-Zn-O), or ITO is used, light generated due to light absorption can be obtained. It is also preferable from the viewpoint of suppressing the adverse effects of the carrier and increasing the aperture ratio of the element.
Further, an ohmic contact layer 115 may be provided between the semiconductor layer 113 and the drain electrode 116 or the source electrode 117 for the purpose of reducing the width or height of the Schottky barrier. For the ohmic contact layer 115, a material such as n-type amorphous silicon or n-type polycrystalline polysilicon to which an impurity such as phosphorus is added at a high concentration can be used.

  The gate wiring 126, the source wiring 125, and the common line 129 are preferably made of metal, more preferably Al, Cu, Au, Ag, Cr, Ta, Ti, Mo, W, Ni or an alloy thereof, and Al Or an alloy thereof is particularly preferable. The insulating protective layer 118 is a layer having an insulating function, and is formed of silicon nitride, silicon dioxide, a silicon oxynitride film, or the like.

  In the embodiment shown in FIGS. 5 and 6, the common electrode 122 is a plate-like electrode formed on substantially the entire surface of the gate insulating layer 112 (that is, the first substrate 12), while the pixel electrode 121 is a common electrode. It is a comb-shaped electrode formed on the insulating protective layer 118 covering the electrode 122. That is, the common electrode 122 is arranged closer to the first substrate 12 than the pixel electrode 121, and these electrodes are arranged so as to overlap with each other via the insulating protective layer 118. The pixel electrode 121 and the common electrode 122 are formed of a transparent conductive material such as ITO (Indium Tin Oxide), IZO (Indium Zinc Oxide), or IZTO (Indium Zinc Tin Oxide). Since the pixel electrode 121 and the common electrode 122 are formed of a transparent conductive material, the area that is opened in a unit pixel area increases, and the aperture ratio and the transmittance increase.

  Further, in order to form a fringe electric field between the pixel electrode 121 and the common electrode 122, the inter-electrode distance (minimum separation distance) R between the pixel electrode 121 and the common electrode 122 is equal to the distance between the first substrate 12 and the second substrate 12. It is smaller than the distance G between the substrates and the substrate 17. Here, the inter-electrode distance R represents the distance between the electrodes in a direction parallel to the surface of the substrate. FIG. 6 shows an example in which the inter-electrode distance R is 0 because the plate-shaped common electrode 122 and the comb-shaped pixel electrode 121 overlap each other, and the inter-electrode distance (minimum separation distance) R is the first substrate. Since the distance between the substrates 12 (ie, the cell gap) G between the second substrate 17 and the second substrate 17 is smaller, a fringe electric field E is formed. Therefore, in the FFS type liquid crystal display element, a horizontal electric field and a parabolic electric field formed in a direction perpendicular to a line forming the comb shape of the pixel electrode 121 can be used. It is preferable that the electrode width 1 of the comb-shaped portion of the pixel electrode 121 and the gap m of the comb-shaped portion of the pixel electrode 121 be formed to have a width that enables all the liquid crystal molecules in the liquid crystal layer 15 to be driven by the generated electric field. . The inter-electrode distance (minimum separation distance) R between the pixel electrode 121 and the common electrode 122 can be adjusted as the (average) film thickness of the gate insulating layer 112. Further, unlike the liquid crystal display device of the present invention, the distance (minimum separation distance) R between the pixel electrode 121 and the common electrode 122 is different between the first substrate 12 and the second substrate 17 unlike FIG. (Equivalent to an IPS type). Such a liquid crystal display element has, for example, a configuration in which comb-shaped pixel electrodes and comb-shaped common electrodes are provided alternately in substantially the same plane.

  The liquid crystal display element of the present invention is preferably an FFS type liquid crystal display element utilizing a fringe electric field, and the shortest distance between the adjacent common electrode 122 and pixel electrode 121 is determined by the distance between the alignment films 14 (distance between substrates). When the distance is shorter than the shortest distance, a fringe electric field is formed between the common electrode and the pixel electrode, and the horizontal and vertical alignment of the liquid crystal molecules can be used efficiently. In the case of the FFS type liquid crystal display device of the present invention, when a voltage is applied to liquid crystal molecules arranged such that the major axis direction is parallel to the alignment direction of the alignment film, the voltage between the pixel electrode 121 and the common electrode 122 is increased. Lines of electric force of a parabolic electric field are formed up to the pixel electrode 121 and the upper part of the common electrode 122, and the liquid crystal molecules in the liquid crystal layer 15 are arranged orthogonally to the electric field in which the long axis is formed. Therefore, liquid crystal molecules can be driven even with low dielectric anisotropy.

The color filter 16 preferably has a black matrix (not shown) formed at a portion corresponding to the thin film transistor and the storage capacitor 123 from the viewpoint of preventing light leakage. The color filter 16 is usually formed by three filters of R (red), G (green), and B (blue), and forms one dot of a video or image. For example, these three filters are gate wirings. Are arranged in the direction in which they extend. The color filter 16 can be produced by, for example, a pigment dispersion method, a printing method, an electrodeposition method, a dyeing method, or the like. For example, a method of manufacturing a color filter by a pigment dispersion method will be described. A curable coloring composition for a color filter is applied on a transparent substrate, subjected to a patterning treatment, and cured by heating or light irradiation. By performing this step for each of the three colors of red, green, and blue, a pixel portion for a color filter can be manufactured. In addition, a so-called color filter on array in which pixel electrodes provided with active elements such as TFTs and thin-film diodes on the substrate may be employed.
On the electrode layer 13 and the color filter 16, a pair of alignment films 14 that are in direct contact with the liquid crystal composition constituting the liquid crystal layer 15 and induce homogeneous alignment are provided.
Further, the polarizing plate 11 and the polarizing plate 18 can be adjusted so that the viewing angle and the contrast are good by adjusting the polarizing axes of the respective polarizing plates. It is preferred to have a perpendicular transmission axis. In particular, one of the polarizing plate 11 and the polarizing plate 18 is preferably arranged so as to have a transmission axis parallel to the alignment direction of the liquid crystal molecules. Further, it is preferable to adjust the product of the refractive index anisotropy of the liquid crystal and the cell gap so as to maximize the contrast. Further, a retardation film for widening the viewing angle may be used.

  As another embodiment of the liquid crystal display element of the present invention, in the case of the IPS type, the shortest distance between the adjacent common electrode and the pixel electrode is longer than the shortest distance between the liquid crystal alignment films, For example, when the common electrode and the pixel electrode are formed on the same substrate, and the common electrode and the pixel electrode are alternately arranged, the shortest separation distance between the adjacent common electrode and the pixel electrode is small. And those having a structure longer than the shortest separation distance between liquid crystal alignment films.

The liquid crystal display element of the present invention is, for example, after forming a coating on a substrate having an electrode layer and / or a surface of the substrate, separating a pair of substrates such that the coating is on the inside, and then facing the liquid crystal. It is preferable to manufacture the composition by filling the composition between the substrates. At that time, it is preferable to adjust the distance between the substrates via a spacer.
The distance between the substrates (the average thickness of the obtained liquid crystal layer, also referred to as the separation distance between the coatings) is preferably adjusted to be 1 to 100 μm. The average distance between the coatings is preferably 1.5 to 10 μm.
In the present invention, examples of the spacer used to adjust the distance between the substrates include columnar spacers made of glass particles, plastic particles, alumina particles, a photoresist material, and the like.

  The VA-type, FFS-type or IPS-type liquid crystal display device described with reference to FIGS. 1 to 6 is an example of the liquid crystal display device of the present invention, and these liquid crystal display devices do not depart from the technical idea of the present invention. Various changes can be made within the scope.

<< Liquid crystal display >>
The liquid crystal display of the present invention includes the above-described liquid crystal display element of the present invention, and can have the same configuration as a known liquid crystal display except that the liquid crystal display element of the present invention is provided.
The liquid crystal display of the present invention can be used, for example, as a liquid crystal display in an image display device such as a liquid crystal television, a computer monitor, a mobile phone, an information terminal, and a game machine.

  Hereinafter, the present invention will be described more specifically with reference to Examples, but the present invention is not limited to these Examples.

Each symbol in Table 1 has the following meaning.
Tni: Nematic phase-isotropic liquid phase transition temperature (° C)
Δn: refractive index anisotropy at 25 ° C. Δε: dielectric anisotropy at 25 ° C. γ ₁ (25 ° C.): rotational viscosity at 25 ° C. (mPa · s)

[Examples 1 to 5, Comparative Example 1]
A liquid crystal composition having the following composition was prepared, and its physical properties (Tni, Δn, Δε, γ ₁ (25 ° C.)) were measured. Table 1 shows the evaluation results.

As described above, the liquid crystal compositions of Examples 1 to 5 have negative values of dielectric anisotropy (Δε), low rotational viscosity γ ₁ (25 ° C.), low viscosity, and high-speed response. It was confirmed to have. Above all, the liquid crystal compositions of Examples 1, 3 and 5 had particularly low viscosities.
The liquid crystal compositions of Examples 1 to 5 had the same rotational viscosity γ ₁ (25 ° C.) as the liquid crystal composition of Comparative Example 1, but had a higher dielectric anisotropy than the liquid crystal composition of Comparative Example 1. The absolute value of (Δε) was large and had better characteristics.

The liquid crystal composition of the present invention has a negative value of dielectric anisotropy (Δε), a small rotational viscosity (γ ₁ ), a liquid crystal display element excellent in high-speed response, and a liquid crystal display. Available for the manufacture of

2, 2A, 2B, 2C ... cells, 21, 23 ... first substrate, 22, 24 ... second substrate, 211A, 211B, 231 ... first electrode, 212A, 212B, 241 ... ... second electrode, 213 ... insulating layer, 232 ... first alignment layer 242 ... the second alignment _film, d _1, d _{2, d} 3, ... cell _gap, W 1, _{W 2} ... electrode width, L ₁ ... distance between electrodes 10 ... liquid crystal display element, 12 ... first transparent insulating substrate, 121 ... pixel electrode, 122 ... common electrode, 126 ... -Gate wiring, 125-Source wiring, 14-Alignment film, 15-Liquid crystal layer, 17-Second transparent insulating substrate, R-Distance between electrodes, G-Between substrates distance

Claims (7)

A liquid crystal composition having a negative value of dielectric anisotropy (Δε),
One or more compounds represented by the following general formula (i), and a compound selected from the group consisting of compounds represented by the following general formulas (N-1-1) and (N-1-2) A liquid crystal composition comprising one or more kinds, and one or more kinds of compounds represented by the following general formula (ii).

(Wherein, R ⁱ¹ and R ⁱ² each independently represent an alkenyl group having 2 to 8 carbon atoms,
^{R N111, R N112, R N121} , R N122, R ii1 and ^{R ii2} each independently represent an alkyl group having 1 to 8 carbon atoms, one or non-adjacent two or more in the alkyl group -CH ₂ - are each independently -CH = CH -, - C≡C - , - O -, - CO -, - COO- or -OCO- may be substituted by,
One or more hydrogen atoms in the cyclohexane ring in the general formula (N-1-1) may be each independently substituted with a halogen atom or an alkyl group having 1 to 8 carbon atoms, One or two or more non-adjacent —CH ₂ — in the alkyl group are each independently —CH ＝ CH—, —C≡C—, —O—, —CO—, —COO—, or —OCO May be replaced by
One hydrogen atom in the benzene ring in the general formula (N-1-1) may be independently substituted by a halogen atom or an alkyl group having 1 to 8 carbon atoms. one or non-adjacent two or more -CH ₂ in the - each independently -CH = CH -, - C≡C - , - O -, - CO -, - COO- or substituted by -OCO- May be
One or more hydrogen atoms in the cyclohexane ring in the general formula (N-1-2) may be each independently substituted with a halogen atom or an alkyl group having 1 to 8 carbon atoms, One or two or more non-adjacent —CH ₂ — in the alkyl group are each independently —CH ＝ CH—, —C≡C—, —O—, —CO—, —COO—, or —OCO May be replaced by
One hydrogen atom in the benzene ring in the general formula (N-1-2) may be independently substituted with a halogen atom or an alkyl group having 1 to 8 carbon atoms. one or non-adjacent two or more -CH ₂ in the - each independently -CH = CH -, - C≡C - , - O -, - CO -, - COO- or substituted by -OCO- May be
n ⁱⁱ¹ represents 0 or 1. )   The liquid crystal composition according to claim 1, comprising three or more compounds selected from the group consisting of compounds represented by formulas (N-1-1), (N-1-2), and (ii). The liquid crystal according to claim 1, comprising one or more compounds selected from the group consisting of compounds represented by the following general formulas (N-1), (N-2), and (N-3). 4. Composition.

(Wherein, R ^N11 , R ^N12 , R ^N21 , R ^N22 , R ^N31 and R ^N32 each independently represent an alkyl group having 1 to 8 carbon atoms, and one or two non-adjacent alkyl groups in the alkyl group more than five -CH ₂ - are each independently -CH = CH -, - C≡C - , - O -, - CO -, - COO- or -OCO- may be substituted by,
A ^N11 , A ^N12 , A ^N21 , A ^N22 , A ^N31 and A ^N32 each independently represent (a) a 1,4-cyclohexylene group (one -CH ₂ -or one adjacent to the 1,4-cyclohexylene group present in the group); Two or more —CH ₂ — may be replaced by —O—.)
(B) 1,4-phenylene group (one -CH = or two or more non-adjacent -CH = present in this group may be replaced by -N =)
(C) naphthalene-2,6-diyl group, 1,2,3,4-tetrahydronaphthalene-2,6-diyl group or decahydronaphthalene-2,6-diyl group (naphthalene-2,6-diyl group or One -CH = or two or more non-adjacent -CH = present in the 1,2,3,4-tetrahydronaphthalene-2,6-diyl group may be replaced by -N =. ) And (d) represent a group selected from the group consisting of 1,4-cyclohexenylene groups, wherein the hydrogen atoms in the groups (a), (b), (c) and (d) are respectively It may be independently substituted with a cyano group, a halogen atom or an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent —CH ₂ — in the alkyl group are each independently — CH = CH-, -C≡C-, -O-, -CO-, -C OO- or -OCO-,
^{Z N11, Z N12, Z N21} , Z N22, Z N31 and ^{Z N32} 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 -, - represents CF = CF- or -C≡C-,
X ^N21 represents a hydrogen atom or a fluorine atom,
T ^N31 is -CH ₂ - represents an or an oxygen atom,
n ^N11 , n ^N12 , n ^N21 , n ^N22 , n ^N31 and n ^N32 each independently represent an integer of 0 to 3, but n ^N11 + n ^N12 , n ^N21 + n ^N22 and n ^N31 + n ^N32 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, but may have the general formula (N-1-1), The compounds represented by (N-1-2) and (ii) are excluded. ) One kind of a compound represented by the following general formula (N-1-3), containing a compound represented by the general formula (N-1), wherein the compound represented by the general formula (N-1) is 4. The liquid crystal composition according to claim 3, wherein the composition is two or more types.

( ^Wherein , R ^N131 and R ^N132 each independently represent an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent —CH ₂ — in the alkyl group are each independently -CH = CH-, -C≡C-, -O-, -CO-, -COO- or -OCO-,
One or more hydrogen atoms in the cyclohexane ring in the general formula (N-1-3) may be each independently substituted with a halogen atom or an alkyl group having 1 to 8 carbon atoms, One or two or more non-adjacent —CH ₂ — in the alkyl group are each independently —CH ＝ CH—, —C≡C—, —O—, —CO—, —COO—, or —OCO May be replaced by
One or more hydrogen atoms in the benzene ring in the general formula (N-1-3) may be each independently substituted with a halogen atom or an alkyl group having 1 to 8 carbon atoms, One or two or more non-adjacent —CH ₂ — in the alkyl group are each independently —CH ＝ CH—, —C≡C—, —O—, —CO—, —COO—, or —OCO May be replaced by-. ) The liquid crystal composition according to any one of claims 1 to 4, comprising one or more compounds represented by the following general formula (L).

(Wherein, R ^L1 and R ^L2 each independently represent an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent —CH ₂ — in the alkyl group are each independently -CH = CH-, -C≡C-, -O-, -CO-, -COO- or -OCO-,
n ^L1 represents 0, 1, 2 or 3;
A ^{L1, A L2,} and ^{A L3} each independently (a) 1,4-cyclohexylene group (this is present in the group one -CH ₂ - or nonadjacent two or more -CH ₂ - May be replaced by -O-.)
(B) 1,4-phenylene group (one -CH = or two or more non-adjacent -CH = present in this group may be replaced by -N =) and (c) Naphthalene-2,6-diyl group, 1,2,3,4-tetrahydronaphthalene-2,6-diyl group or decahydronaphthalene-2,6-diyl group (naphthalene-2,6-diyl group or 1,2 , 3,4-tetrahydronaphthalene-2,6-diyl, one -CH = or two or more non-adjacent -CH = present in the group may be replaced by -N =.)
A hydrogen atom in the above groups (a), (b) and (c) may be each independently substituted by a cyano group, a fluorine atom or a chlorine atom ,
Z ^L1 and Z ^L2 each independently represent a single bond, —CH ₂ CH ₂ —, — (CH ₂ ) ₄ —, —OCH ₂ —, —CH ₂ O—, —COO—, —OCO—, —OCF _{2 -, - CF 2 O -,} - CH = N-N = CH -, - CH = CH -, - represents CF = CF- or -C≡C-,
When n ^L1 is 2 or 3 and a plurality of A ^L2 are present, they may be the same or different; when n ^L1 is 2 or 3 and a plurality of Z ^L2 are present, May be the same or different, but are represented by the general formulas (i), (ii), (N-1), (N-2), (N-1-1), and (N-1-2) And the compound represented by (N-3) are excluded. )   A liquid crystal display device comprising the liquid crystal composition according to claim 1.   A liquid crystal display comprising the liquid crystal display element according to claim 6.

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