TWI724197B - Liquid crystal composition and liquid crystal display element - Google Patents

Abstract

The problem to be solved by the present invention is to provide a composition, which is a composition with positive Δε and a liquid crystal phase with a wide temperature range, low viscosity, good solubility at low temperatures, and high specific resistance or voltage retention. , Stable to heat or light; further provide a FFS type, IPS type or TN type liquid crystal display element with a good yield, which by using the composition has excellent display quality and is difficult to cause image retention or dripping marks, etc. Poor display.

The present inventors have studied various liquid crystal compounds and various chemical substances, and found that the above-mentioned problems can be solved by combining specific liquid crystal compounds, thereby completing the present invention.

The present invention provides a composition containing a compound represented by the general formula (i), and a liquid crystal display device using the composition.

Description

Liquid crystal composition and liquid crystal display element

The present invention relates to a liquid crystal display device, which uses a nematic liquid crystal composition with positive or negative dielectric anisotropy, and has the characteristics of high transmittance and high aperture ratio.

Liquid crystal display elements are used in various measuring equipment represented by clocks and calculators, automotive panels, word processors, electronic notebooks, printers, computers, televisions, clocks, advertising display boards, etc. As a liquid crystal display method, TN (twisted nematic) type, STN (super twisted nematic) type, vertical alignment type of TFT (thin film transistor), or IPS (lateral electric field effect) type, etc. can be used as representatives.

In recent years, with the development of high-resolution LCD TVs, a large number of products with 8K resolution have been developed. Even with the advancement of high-resolution, the overall size of the TV may not increase. As a result, the size of one pixel decreases with the high-resolution. In order to compensate for the decrease in transmittance and the decrease in brightness caused by this, a higher-brightness backlight becomes necessary, and this kind of backlight will inevitably lead to an increase in power consumption, thus becoming unable to cope with the powerful power saving in recent years. Requirements. Furthermore, in order to increase the aperture ratio, a new requirement for "a liquid crystal composition made by reducing the width of the pixel electrode" has also arisen.

In addition, for the liquid crystal composition, it is required to be stable to external stimuli such as water, air, heat and light, and to display the liquid crystal phase in a wide temperature range as much as possible with room temperature as the center, low viscosity and driving The voltage is low. In order to meet these requirements, the liquid crystal composition uses several types to make the dielectric anisotropy (Δε) and/or refractive index anisotropy (Δn) the most appropriate value for each display element. Dozens of compounds are composed.

Among all driving methods, low-voltage driving, high-speed response, and wide operating temperature range are required, and △ε is required to be positive or negative with a large absolute value, a small viscosity (η), and nematic-isotropy The liquid phase transition temperature (Tni) is high. In addition, it is necessary to adjust the Δn of the liquid crystal composition to an appropriate range according to the setting of Δn×d, which is the product of Δn and the cell gap (d), in accordance with the cell gap. In addition, when a liquid crystal display element is applied to a television or the like, since high-speed response is important, a liquid crystal composition with a small rotational viscosity (γ1) is required.

As a structure of a liquid crystal composition that seeks high-speed responsiveness, for example, a liquid crystal composition used in combination with a liquid crystal compound whose Δε is positive and a liquid crystal compound whose Δε is neutral is disclosed (Patent Documents 1 to 4).

As a structure of a liquid crystal composition that seeks high-speed responsiveness, for example, a liquid crystal composition used in combination with a liquid crystal compound whose Δε is negative and a liquid crystal compound whose Δε is neutral is disclosed (Patent Documents 5 to 7).

[Prior Technical Literature] [Patent Literature]

Patent Document 1: Japanese Patent Application Laid-Open No. 11-202356

Patent Document 2: Japanese Patent Application Publication No. 2012-190029

Patent Document 3: Japanese Patent Laid-Open No. 2002-31812

Patent Document 4: WO2014/188612 Publication

Patent Document 5: WO2014/006963

Patent Document 6: WO2014/148197

Patent Document 7: WO2015/060056

The problem to be solved by the present invention is to provide a composition, which is a composition in which △ε is positive, and has a liquid crystal phase with a wide temperature range, low viscosity, good solubility at low temperatures, and high specific resistance or voltage retention. , Stable to heat or light; further provide a FFS type, IPS type or TN type liquid crystal display element with a good yield, which by using the above composition, displays excellent display quality, residual image or dripping traces, etc. Defects are difficult to produce.

The present inventors studied various liquid crystal compounds and various chemical substances, and found that the above-mentioned problems can be solved by combining specific liquid crystal compounds, thereby completing the present invention.

Provided is a composition containing one or more compounds represented by the general formula (i), a liquid crystal display element using the composition, and TN (Twisted Nematic) and ECB (Electrically Controlled Birefringence) using the composition. ), IPS (In Plane Switching) or FFS (Fringe Field Switching).

(In the above general formula (1), R ⁱ¹ and R ⁱ² each independently represent an alkenyl group with 2 to 8 carbon atoms; X ⁱ¹ represents a hydrogen atom, an alkyl group with 1 to 4 carbon atoms, and an alkyl group with 1 to 4 carbon atoms. 4 of alkoxy, cyano, fluorine atom or chlorine atom; n ⁱ¹¹ and n ⁱ¹² each independently represent 0 or 1, n ⁱ¹¹ + n ⁱ¹² represent 0 or 1; n ⁱ²¹ and n ⁱ²² each independently represent 0, 1 Or 2, n ⁱ²¹ + n ⁱ²² represents 2; A ⁱ¹¹ and A ⁱ¹² each independently represent 1,4-cyclohexylene (1 -CH ₂ -or 2 or more non-adjacent- CH ₂ -may be substituted by -O-, and the hydrogen atoms may be independently substituted by alkyl groups with 1 to 4 carbon atoms, alkoxy groups with 1 to 4 carbon atoms, cyano groups, fluorine atoms or chlorine atoms) ; A ⁱ²¹ and A ⁱ²² each independently represent 1,4-phenylene (1 -CH= or 2 or more non-adjacent -CH= in the group can also be substituted by -N=, exist One hydrogen atom in the group can also be substituted by an alkyl group with 1 to 4 carbon atoms, an alkoxy group with 1 to 4 carbon atoms, a cyano group, a fluorine atom or a chlorine atom); A ⁱ²¹ or A ⁱ²² can be the same Can be different)

The composition with positive or negative dielectric anisotropy of the present invention can obtain greatly reduced viscosity, good solubility at low temperatures, and minimal changes in specific resistance or voltage retention due to heat or light. The product has high practicability, and high-speed response can be achieved by using liquid crystal display elements such as IPS type or FFS type. In addition, since stable performance can be exhibited in the liquid crystal display element manufacturing process, display defects caused by the process are suppressed, and the manufacturing can be performed at a high yield, which is very useful.

The composition of the present invention preferably exhibits a liquid crystal phase at room temperature (25°C), and more preferably exhibits a nematic phase. In addition, the composition of the present invention suitably contains a compound whose dielectric properties are approximately neutral (Δε value is -2~2), a negative compound (Δε value is less than -2), and a positive compound (Δε value is greater than 2). ). Furthermore, the dielectric anisotropy of the compound is the following value: a value extrapolated from the measured value of the dielectric anisotropy of a composition prepared by adding a composition whose dielectric property is approximately neutral at 25°C . In addition, the following content is described in %, which means mass %.

R ⁱ¹ and R ⁱ² each independently represent an alkenyl group having 2 to 8 carbon atoms, preferably an alkenyl group having 2 to 5 carbon atoms.

烷等飽和環結構之情形時，較佳為碳原子數2~5之烯基。為了使向列相穩定，較佳為碳原子及存在之情形時之氧原子的合計在5以下，較佳為直鏈狀。 In addition, when the ring structure to which it is bonded is phenyl (aromatic), it is preferably an alkenyl group with 4 to 5 carbon atoms, and the ring structure to which it is bonded is cyclohexane, piperan and two

In the case of a saturated ring structure such as an alkane, it is preferably an alkenyl group having 2 to 5 carbon atoms. In order to stabilize the nematic phase, the total of carbon atoms and oxygen atoms when present is preferably 5 or less, and it is preferably linear.

As the alkenyl group, it is preferably selected from the group represented by any one of formula (R1) to formula (R5) (black dots in each formula represent carbon atoms in the ring structure), and the ring structure to which it is bonded In the case of a phenyl group (aromatic), it is preferably a group represented by the formula (R4) or (R5).

X ⁱ¹ represents a hydrogen atom, an alkyl group with 1 to 4 carbon atoms, an alkoxy group with 1 to 4 carbon atoms, a cyano group, a fluorine atom or a chlorine atom. When the compatibility with other liquid crystal molecules is important, A fluorine atom or a methyl group is preferable, and a fluorine atom is preferable.

n ⁱ¹¹ and n ⁱ¹² each independently represent 0 or 1, and n ⁱ¹¹ + n ⁱ¹² represent 0 or 1. When the compatibility with other liquid crystal molecules is important, both are preferably 0.

n ⁱ²¹ and n ⁱ²² independently represent 0, 1, or 2, respectively, n ⁱ²¹ + n ⁱ²² represent 2, preferably n ⁱ²¹ represents 1 and n ⁱ²² represents 1, preferably n ⁱ²¹ represents 2 and n ⁱ²² represents 0, more ^Preferably, n ⁱ²¹ represents 0 and n i22 represents 2. When the compatibility with other liquid crystal molecules is particularly important, n ⁱ²¹ represents 1 and n ⁱ²² represents 1 preferably.

較佳為表示反式-1,4-伸環己基。 In the presence of A ⁱ¹¹ and A ⁱ¹² , they each independently represent 1,4-cyclohexylene (1 -CH ₂ -existing in the group or 2 or more non-adjacent -CH _2- It can also be substituted by -O-, and the hydrogen atoms can also be independently substituted by C1-C4 alkyl groups, C1-C4 alkoxy groups, cyano groups, fluorine atoms or chlorine atoms), more preferably To express the following structure,

Preferably, it represents trans-1,4-cyclohexylene.

較佳為表示1,4-伸苯基。 A ⁱ²¹ and A ^{i22 more} preferably represent the following structure,

Preferably, it represents 1,4-phenylene.

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

The type of the compound that can be combined is not particularly limited, and it is preferable to contain one to three kinds from the compounds, preferably one to four kinds, and more preferably two kinds.

As the compound represented by the formula (i), the compound represented by the formula (i-1) to (i-12) is preferred, and the compound represented by the formula (i-4) to (i-9) is preferred, Preferred are compounds represented by formulas (i-4), (i-5), (i-7) and (i-8).

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

When the viscosity of the composition of the present invention is kept low and a composition with a fast response speed is required, it is preferable that the above-mentioned lower limit is low and the upper limit is low. _{When the T NI} of the composition of the present invention is kept high and a composition with good temperature stability is required, it is preferable that the above-mentioned lower limit is high and the upper limit is high. When it is desired to increase the dielectric anisotropy in order to keep the driving voltage low, it is preferable that the above-mentioned lower limit value is high and the upper limit value is high. When it is desired to make Δn larger, it is preferable that the above-mentioned lower limit value is high and the upper limit value is high.

The composition of the present invention preferably contains one or two or more compounds selected from the compounds represented by the general formulas (N-1), (N-2) and (N-3). These compounds are equivalent to compounds with negative dielectric properties (the sign of Δε is negative, and its absolute value is greater than 2).

(In the formula, R ^N11 , R ^N12 , R ^N21 , R ^N22 , R ^N31 and R ^N32 each independently represent an alkyl group with 1 to 8 carbon atoms, and one of the alkyl groups or two or more non-adjacent ones The -CH ₂ -can also be independently replaced by -CH=CH-, -C≡C-, -O-, -CO-, -COO- or -OCO-; A ^N11 , A ^N12 , A ^N21 , A ^N22 , A ^N31 and A ^N32 each independently represent a group selected from (a) 1,4-cyclohexylene (1 -CH ₂ -present in the group or 2 or more non-adjacent -CH ₂ -also Can be substituted by -O-), (b) 1,4-phenylene (1 -CH= or 2 or more non-adjacent -CH= in the group can also be substituted by -N=) , (C) Naphthalene-2,6-diyl, 1,2,3,4-tetrahydronaphthalene-2,6-diyl or decahydronaphthalene-2,6-diyl (present in naphthalene-2,6 -Diyl or 1 of 1,2,3,4-tetrahydronaphthalene-2,6-diyl -CH= or 2 or more non-adjacent -CH= can also be substituted by -N=), And (d) 1,4-cyclohexenylene

The groups in the group consisting of the above-mentioned groups (a), group (b), group (c) and group (d) may also be independently substituted by cyano, fluorine or chlorine atoms; Z ^N11 , Z ^N12 , Z ^N21 , Z ^N22 , Z ^N31 and Z ^N32 each independently represent a single bond, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -COO-, -OCO -, -OCF ₂ -, -CF ₂ O-, -CH=NN=CH-, -CH=CH-, -CF=CF- or -C≡C-; X ^N21 represents a hydrogen atom or a fluorine atom; T ^N31 Represents -CH ₂ -or oxygen atom; n ^N11 , n ^N12 , n ^N21 , n ^N22 , n ^N31 and n ^N32 each independently represent an integer from 0 to 3, n ^N11 +n ^N12 , n ^N21 +n ^N22 and n ^N31 +n ^{N32 is} independently 1, 2 or 3 respectively. When there are multiple A ^N11 ~A ^N32 , Z ^N11 ~Z ^N32 , they can be the same or different)

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

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

烷等飽和環結構之情形時，較佳為直鏈狀之碳原子數1~5之烷基、直鏈狀之碳原子數1~4之烷氧基及直鏈狀之碳原子數2~5之烯基。為了使向列相穩定，較佳為碳原子及存在之情形時之氧原子的合計在5以下，較佳為直鏈狀。 In addition, when the ring structure to which it is bonded is a phenyl group (aromatic), it is preferably a linear alkyl group with 1 to 5 carbon atoms, and a linear alkyl group with 1 to 4 carbon atoms. The oxy group and the alkenyl group with 4~5 carbon atoms are bonded to the ring structure of cyclohexane, pyran and two

In the case of a saturated ring structure such as an alkane, it is preferably a straight-chain alkyl group with 1 to 5 carbon atoms, a straight-chain alkoxy group with 1 to 4 carbon atoms, and a straight-chain carbon number from 2 to 5 of alkenyl. In order to stabilize the nematic phase, the total of carbon atoms and oxygen atoms when present is preferably 5 or less, and it is preferably linear.

As the alkenyl group, a group selected from the group represented by any one of the formula (R1) to the formula (R5) is preferred. (The black dots in each formula indicate the carbon atoms in the ring structure)

更佳為表示反式-1,4-伸環己基、1,4-伸環己烯基或1,4-伸苯基。 When it is required to increase △n, A ^N11 , A ^N12 , A ^N21 , A ^N22 , A ^N31, and A ^{N32 are} preferably independently aromatic. In order to improve the response speed, it is preferably aliphatic, more preferably To represent trans-1,4-cyclohexylene, 1,4-phenylene, 2-fluoro-1,4-phenylene, 3-fluoro-1,4-phenylene, 3,5-diphenylene Fluoro-1,4-phenylene, 2,3-difluoro-1,4-phenylene, 1,4-cyclohexenyl, 1,4-bicyclo[2.2.2]octyl, piper Pyridine-1,4-diyl, naphthalene-2,6-diyl, decahydronaphthalene-2,6-diyl or 1,2,3,4-tetrahydronaphthalene-2,6-diyl, more preferably To express the following structure,

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

Z ^N11 , Z ^N12 , Z ^N21 , Z ^N22 , Z ^N31, and Z ^N32 preferably independently represent -CH ₂ O-, -CF ₂ O-, -CH ₂ CH ₂ -, -CF ₂ CF ₂ -or A single bond, more preferably -CH ₂ O-, -CH ₂ CH ₂ -or a single bond, particularly _{preferably -CH 2} O- or a single bond.

X ^{N21 is} preferably a fluorine atom.

T ^{N31 is} preferably an oxygen atom.

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

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

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

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

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

As the compound represented by the general formula (N-1), the group of compounds represented by the following general formulas (N-1a) to (N-1g) can be cited.

(In the formula, R ^N11 and R ^N12 represent the same meaning as ^{R N11} and R ^N12 in the general formula (N-1) ^{, n Na11} represents 0 or 1, n ^Nb11 represents 1 or 2, n ^Nc11 represents 0 or 1, n ^Nd11 represents 1 or 2, n ^Ne11 represents 1 or 2, n ^Nf11 represents 1 or 2, n ^Ng11 represents 1 or 2, A ^Ne11 represents trans-1,4-cyclohexylene or 1,4-phenylene, A ^{Although Ng11} represents trans-1,4-cyclohexenylene, 1,4-cyclohexenylene or 1,4-phenylene, at least one of them represents 1,4-cyclohexenylene, and Z ^Ne11 represents Single bond or ethylene, but at least one represents ethylene)

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

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

(In the formula, R ^N111 and R ^N112 respectively independently represent the same meaning as ^{R N11} and R ^N12 in the general formula (N-1))

R ^{N111 is} preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably a propyl group, a pentyl group or a vinyl group. R ^{N112 is} preferably an alkyl group with 1 to 5 carbon atoms, an alkenyl group with 4 to 5 carbon atoms, or an alkoxy group with 1 to 4 carbon atoms, preferably ethoxy or butoxy.

The compound represented by the general formula (N-1-1) may be used alone or in combination of two or more compounds. The types of compounds that can be combined are not particularly limited, and they can be combined appropriately according to the required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. Regarding the type of compound used, for example, as an embodiment of the present invention, there are one, two, three, four, or five or more types.

When the improvement of △ε is important, it is better to set the content to be higher. When the solubility at low temperature is important, if the content is set to be higher, the effect is high. When the T _NI is important, If the content is set to be small, the effect is high. Furthermore, when improving the dripping trace or the afterimage characteristics, it is preferable to set the range of the content to the middle.

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

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

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

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

(In the formula, R ^N121 and R ^N122 respectively independently represent the same meaning as ^{R N11} and R ^N12 in the general formula (N-1))

R ^{N121 is} preferably an alkyl group with 1 to 5 carbon atoms or an alkenyl group with 2 to 5 carbon atoms, and is preferably an ethyl, propyl, butyl or pentyl group. R ^{N122 is} preferably an alkyl group with 1 to 5 carbon atoms, an alkenyl group with 4 to 5 carbon atoms, or an alkoxy group with 1 to 4 carbon atoms, preferably methyl, propyl, methoxy, ethyl Oxy or propoxy.

The compound represented by the general formula (N-1-2) may be used alone or in combination of two or more compounds. The types of compounds that can be combined are not particularly limited, and they can be combined appropriately according to the required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. Regarding the type of compound used, for example, as an embodiment of the present invention, there are one, two, three, four, or five or more types.

When the improvement of △ε is important, it is better to set the content to be higher. When the solubility at low temperature is important, if the content is set to be smaller, the effect is high. When the T _NI is important, If the content is set to be large, the effect is high. Furthermore, when improving the dripping trace or the afterimage characteristics, it is preferable to set the range of the content to the middle.

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

Further, the compound represented by the general formula (N-1-2) is preferably a compound selected from the group of compounds represented by the formula (N-1-2.1) to the formula (N-1-2.22), preferably (N-1-2.3) to formula (N-1-2.7), formula (N-1-2.10), formula (N-1-2.11), formula (N-1-2.13) and formula (N-1- The compound represented by 2.20) is preferably the compound represented by formula (N-1-2.3) to formula (N-1-2.7) when the improvement of △ε is emphasized, and when the improvement of _{T NI is emphasized} When it is preferably the compound represented by the formula (N-1-2.10), the formula (N-1-2.11) and the formula (N-1-2.13), when the improvement of the response speed is important, the formula The compound represented by (N-1-2.20).

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

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

(In the formula, R ^N131 and R ^N132 respectively independently represent the same meaning as ^{R N11} and R ^N12 in the general formula (N-1))

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

The compound represented by the general formula (N-1-3) may be used alone or in combination of two or more compounds. The types of compounds that can be combined are not particularly limited, and they can be combined appropriately according to the required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. Regarding the type of compound used, for example, as an embodiment of the present invention, there are one, two, three, four, or five or more types.

When the improvement of △ε is important, it is better to set the content to be higher. When the solubility at low temperature is important, if the content is set to be higher, the effect is high. When the T _NI is important, If the content is set to be large, the effect is high. Furthermore, when improving the dripping trace or the afterimage characteristics, it is preferable to set the range of the content to the middle.

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

Furthermore, the compound represented by the general formula (N-1-3) is preferably a compound selected from the group of compounds represented by the formula (N-1-3.1) to the formula (N-1-3.21), preferably (N-1-3.1)~(N-1-3.7) and the compound represented by formula (N-1-3.21), preferably formula (N-1-3.1), formula (N-1-3.2), Compounds represented by formula (N-1-3.3), formula (N-1-3.4) and formula (N-1-3.6).

The compounds represented by formula (N-1-3.1) ~ formula (N-1-3.4), formula (N-1-3.6) and formula (N-1-3.21) can be used alone or in combination. It is preferably a combination of formula (N-1-3.1) and formula (N-1-3.2), selected from formula (N-1-3.3), formula (N-1-3.4) and formula (N-1-3.6) ) 2 or 3 kinds of combination. Relative to the total amount of the composition of the present invention, the lower limit of the preferable content of the compound alone or the like is 5%, 10%, 13%, 15%, 17%, 20%. The preferred upper limit of the content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13% relative to the total amount of the composition of the present invention.

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

(In the formula, R ^N141 and R ^N142 independently represent the same meaning as ^{R N11} and R ^N12 in the general formula (N-1))

R ^N141 and R ^{N142 are} preferably each independently an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, preferably methyl or propane. Group, ethoxy or butoxy.

The compound represented by the general formula (N-1-4) may be used alone or in combination of two or more compounds. The types of compounds that can be combined are not particularly limited, and they can be combined appropriately according to the required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. Regarding the type of compound used, for example, as an embodiment of the present invention, there are one, two, three, four, or five or more types.

When the improvement of △ε is important, it is better to set the content to be higher. When the solubility at low temperature is important, if the content is set to be higher, the effect is high. When the T _NI is important, If the content is set to be small, the effect is high. Furthermore, when improving the dripping trace or the afterimage characteristics, it is preferable to set the range of the content to the middle.

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

Furthermore, the compound represented by the general formula (N-1-4) is preferably a compound selected from the group of compounds represented by the formula (N-1-4.1) to the formula (N-1-4.14), preferably The compound represented by (N-1-4.1)~(N-1-4.4) is preferably represented by formula (N-1-4.1), formula (N-1-4.2) and formula (N-1-4.4) Represents the compound.

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

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

(In the formula, R ^N151 and R ^N152 respectively independently represent the same meaning as ^{R N11} and R ^N12 in the general formula (N-1))

R ^N151 and R ^N152 preferably each independently represent an alkyl group with 1 to 5 carbon atoms, an alkenyl group with 4 to 5 carbon atoms, or an alkoxy group with 1 to 4 carbon atoms, preferably ethyl or propylene.基 or butyl.

The compound represented by the general formula (N-1-5) may be used alone or in combination of two or more compounds. The types of compounds that can be combined are not particularly limited, and they can be combined appropriately according to the required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. Regarding the type of compound used, for example, as an embodiment of the present invention, there are one, two, three, four, or five or more types.

When the improvement of △ε is important, it is better to set the content to be higher. When the solubility at low temperature is important, if the content is set to be smaller, the effect is high. When the T _NI is important, If the content is set to be large, the effect is high. Furthermore, when improving the dripping trace or the afterimage characteristics, it is preferable to set the range of the content to the middle.

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

Furthermore, the compound represented by the general formula (N-1-5) is preferably a compound selected from the group of compounds represented by the formula (N-1-5.1) to the formula (N-1-5.6), preferably (N-1-5.1), the compound represented by the formula (N-1-5.2) and the formula (N-1-5.4).

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

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

(In the formula, R ^N1101 and R ^N1102 respectively independently represent the same meaning as ^{R N11} and R ^N12 in the general formula (N-1))

R ^{N1101 is} preferably an alkyl group with 1 to 5 carbon atoms or an alkenyl group with 2 to 5 carbon atoms, and is preferably an ethyl, propyl, butyl, vinyl, or 1-propenyl group. R ^{N1102 is} preferably an alkyl group with 1 to 5 carbon atoms, an alkenyl group with 4 to 5 carbon atoms or an alkoxy group with 1 to 4 carbon atoms, preferably ethoxy, propoxy or butoxy .

The compound represented by the general formula (N-1-10) may be used alone or in combination of two or more compounds. The types of compounds that can be combined are not particularly limited, and they can be combined appropriately according to the required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. Regarding the type of compound used, for example, as an embodiment of the present invention, there are one, two, three, four, or five or more types.

When the improvement of △ε is important, it is better to set the content to be higher. When the solubility at low temperature is important, the effect is higher if the content is set to be higher. When the T _NI is important, If the content is set higher, the effect is high. Furthermore, when improving the dripping trace or the afterimage characteristics, it is preferable to set the range of the content to the middle.

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

Further, the compound represented by the general formula (N-1-10) is preferably a compound selected from the group of compounds represented by the formula (N-1-10.1) to the formula (N-1-10.21), preferably The compounds represented by (N-1-10.1)~(N-1-10.5), formula (N-1-10.20) and formula (N-1-10.21) are preferably formula (N-1-10.1), Compounds represented by formula (N-1-10.2), formula (N-1-10.20) and formula (N-1-10.21).

The compounds represented by formula (N-1-10.1), formula (N-1-10.2), formula (N-1-10.20) and formula (N-1-10.21) can be used alone or in combination, Relative to the total amount of the composition of the present invention, the lower limit of the preferable content of the compound alone or the like is 5%, 10%, 13%, 15%, 17%, 20%. The preferred upper limit of the content is 35%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13% relative to the total amount of the composition of the present invention.

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

(In the formula, R ^N1111 and R ^N1112 respectively independently represent the same meaning as ^{R N11} and R ^N12 in the general formula (N-1))

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

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

When the improvement of △ε is important, it is better to set the content to be higher. When the solubility at low temperature is important, if the content is set to be lower, the effect is higher. When the T _NI is important, If the content is set higher, the effect is high. Furthermore, when improving the dripping trace or the afterimage characteristics, it is preferable to set the range of the content to the middle.

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

Furthermore, the compound represented by the general formula (N-1-11) is preferably a compound selected from the group of compounds represented by the formula (N-1-11.1) to the formula (N-1-11.15), preferably The compounds represented by (N-1-11.1) to (N-1-11.15) are preferably compounds represented by formula (N-1-11.2) and formula (N-1-11.4).

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

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

(In the formula, R ^N1121 and R ^N1122 respectively independently represent the same meaning as ^{R N11} and R ^N12 in the general formula (N-1))

R ^{N1121 is} preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably ethyl, propyl or butyl. R ^{N1122 is} preferably an alkyl group with 1 to 5 carbon atoms, an alkenyl group with 4 to 5 carbon atoms, or an alkoxy group with 1 to 4 carbon atoms, preferably ethoxy, propoxy or butoxy .

The compound represented by the general formula (N-1-12) may be used alone or in combination of two or more compounds. The types of compounds that can be combined are not particularly limited, and they can be combined appropriately according to the required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. Regarding the type of compound used, for example, as an embodiment of the present invention, there are one, two, three, four, or five or more types.

When the improvement of △ε is important, it is better to set the content to be higher. When the solubility at low temperature is important, if the content is set to be higher, the effect is high. When the T _NI is important, If the content is set to be large, the effect is high. Furthermore, when improving the dripping trace or the afterimage characteristics, it is preferable to set the range of the content to the middle.

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

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

(In the formula, R ^N1131 and R ^N1132 respectively independently represent the same meaning as ^{R N11} and R ^N12 in the general formula (N-1))

R ^{N1131 is} preferably an alkyl group with 1 to 5 carbon atoms or an alkenyl group with 2 to 5 carbon atoms, and is preferably an ethyl, propyl or butyl group. R ^{N1132 is} preferably an alkyl group with 1 to 5 carbon atoms, an alkenyl group with 4 to 5 carbon atoms, or an alkoxy group with 1 to 4 carbon atoms, preferably ethoxy, propoxy or butoxy .

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

When the improvement of △ε is important, it is better to set the content to be higher. When the solubility at low temperature is important, if the content is set to be higher, the effect is high. When the T _NI is important, If the content is set to be large, the effect is high. Furthermore, when improving the dripping trace or the afterimage characteristics, it is preferable to set the range of the content to the middle.

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

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

(In the formula, R ^N1141 and R ^N1142 respectively independently represent the same meaning as ^{R N11} and R ^N12 in the general formula (N-1))

R ^{N1141 is} preferably an alkyl group with 1 to 5 carbon atoms or an alkenyl group with 2 to 5 carbon atoms, and is preferably an ethyl, propyl or butyl group. R ^{N1142 is} preferably an alkyl group with 1 to 5 carbon atoms, an alkenyl group with 4 to 5 carbon atoms or an alkoxy group with 1 to 4 carbon atoms, preferably ethoxy, propoxy or butoxy .

The compound represented by the general formula (N-1-14) may be used alone or in combination of two or more compounds. The types of compounds that can be combined are not particularly limited, and they can be combined appropriately according to the required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. Regarding the type of compound used, for example, as an embodiment of the present invention, there are one, two, three, four, or five or more types.

When the improvement of △ε is important, it is better to set the content to be higher. When the solubility at low temperature is important, if the content is set to be higher, the effect is high. When the T _NI is important, If the content is set to be large, the effect is high. Furthermore, when improving the dripping trace or the afterimage characteristics, it is preferable to set the range of the content to the middle.

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

The compound represented by the general formula (N-1-15) is the following compound.

(In the formula, R ^N1151 and R ^N1152 respectively independently represent the same meaning as ^{R N11} and R ^N12 in the general formula (N-1))

R ^{N1151 is} preferably an alkyl group with 1 to 5 carbon atoms or an alkenyl group with 2 to 5 carbon atoms, and is preferably an ethyl, propyl or butyl group. R ^{N1152 is} preferably an alkyl group with 1 to 5 carbon atoms, an alkenyl group with 4 to 5 carbon atoms, or an alkoxy group with 1 to 4 carbon atoms, preferably ethoxy, propoxy or butoxy .

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

When the improvement of △ε is important, it is better to set the content to be higher. When the solubility at low temperature is important, if the content is set to be higher, the effect is high. When the T _NI is important, If the content is set to be large, the effect is high. Furthermore, when improving the dripping trace or the afterimage characteristics, it is preferable to set the range of the content to the middle.

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

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

(In the formula, R ^N1161 and R ^N1162 respectively independently represent the same meaning as ^{R N11} and R ^N12 in the general formula (N-1))

R ^{N1161 is} preferably an alkyl group with 1 to 5 carbon atoms or an alkenyl group with 2 to 5 carbon atoms, and is preferably an ethyl, propyl or butyl group. R ^{N1162 is} preferably an alkyl group with 1 to 5 carbon atoms, an alkenyl group with 4 to 5 carbon atoms, or an alkoxy group with 1 to 4 carbon atoms, preferably ethoxy, propoxy or butoxy .

The compound represented by the general formula (N-1-16) may be used alone or in combination of two or more compounds. The types of compounds that can be combined are not particularly limited, and they can be combined appropriately according to the required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. Regarding the type of compound used, for example, as an embodiment of the present invention, there are one, two, three, four, or five or more types.

When the improvement of △ε is important, it is better to set the content to be higher. When the solubility at low temperature is important, if the content is set to be higher, the effect is high. When the T _NI is important, If the content is set to be large, the effect is high. Furthermore, when improving the dripping trace or the afterimage characteristics, it is preferable to set the range of the content to the middle.

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

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

(In the formula, R ^N1171 and R ^N1172 respectively independently represent the same meaning as ^{R N11} and R ^N12 in the general formula (N-1))

R ^{N1171 is} preferably an alkyl group with 1 to 5 carbon atoms or an alkenyl group with 2 to 5 carbon atoms, and is preferably an ethyl, propyl or butyl group. R ^{N1172 is} preferably an alkyl group with 1 to 5 carbon atoms, an alkenyl group with 4 to 5 carbon atoms, or an alkoxy group with 1 to 4 carbon atoms, preferably ethoxy, propoxy or butoxy .

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

When the improvement of △ε is important, it is better to set the content to be higher. When the solubility at low temperature is important, if the content is set to be higher, the effect is high. When the T _NI is important, If the content is set to be large, the effect is high. Furthermore, when improving the dripping trace or the afterimage characteristics, it is preferable to set the range of the content to the middle.

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

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

(In the formula, R ^N1181 and R ^N1182 respectively independently represent the same meaning as ^{R N11} and R ^N12 in the general formula (N-1))

R ^{N1181 is} preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably methyl, ethyl, propyl or butyl. R ^{N1182 is} preferably an alkyl group with 1 to 5 carbon atoms, an alkenyl group with 4 to 5 carbon atoms, or an alkoxy group with 1 to 4 carbon atoms, preferably ethoxy, propoxy or butoxy .

The compound represented by the general formula (N-1-18) may be used alone or in combination of two or more compounds. The types of compounds that can be combined are not particularly limited, and they can be combined appropriately according to the required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. Regarding the type of compound used, for example, as an embodiment of the present invention, there are one, two, three, four, or five or more types.

When the improvement of △ε is important, it is better to set the content to be higher. When the solubility at low temperature is important, if the content is set to be higher, the effect is high. When the T _NI is important, If the content is set to be large, the effect is high. Furthermore, when improving the dripping trace or the afterimage characteristics, it is preferable to set the range of the content to the middle.

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

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

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

(In the formula, R ^N1201 and R ^N1202 respectively independently represent the same meaning as ^{R N11} and R ^N12 in the general formula (N-1))

R ^N1201 and R ^{N1202 are} preferably each independently an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably an ethyl group, a propyl group, or a butyl group.

The compound represented by the general formula (N-1-20) may be used alone or in combination of two or more compounds. The types of compounds that can be combined are not particularly limited, and they can be combined appropriately according to the required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. Regarding the type of compound used, for example, as an embodiment of the present invention, there are one, two, three, four, or five or more types.

When the improvement of △ε is important, it is better to set the content to be higher. When the solubility at low temperature is important, if the content is set to be higher, the effect is high. When the T _NI is important, If the content is set to be large, the effect is high. Furthermore, when improving the dripping trace or the afterimage characteristics, it is preferable to set the range of the content to the middle.

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

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

(In the formula, R ^N1211 and R ^N1212 respectively independently represent the same meaning as ^{R N11} and R ^N12 in the general formula (N-1))

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

The compound represented by the general formula (N-1-21) may be used alone or in combination of two or more compounds. The types of compounds that can be combined are not particularly limited, and they can be combined appropriately according to the required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. Regarding the type of compound used, for example, as an embodiment of the present invention, there are one, two, three, four, or five or more types.

When the improvement of △ε is important, it is better to set the content to be higher. When the solubility at low temperature is important, if the content is set to be higher, the effect is high. When the T _NI is important, If the content is set to be large, the effect is high. Furthermore, when improving the dripping trace or the afterimage characteristics, it is preferable to set the range of the content to the middle.

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

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

(In the formula, R ^N1221 and R ^N1222 independently represent the same meaning as ^{R N11} and R ^N12 in the general formula (N-1))

R ^N1221 and R ^{N1222 are} preferably each independently an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably ethyl, propyl or butyl.

The compound represented by the general formula (N-1-22) may be used alone or in combination of two or more compounds. The types of compounds that can be combined are not particularly limited, and they can be combined appropriately according to the required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. Regarding the type of compound used, for example, as an embodiment of the present invention, there are one, two, three, four, or five or more types.

When the improvement of △ε is important, it is better to set the content to be higher. When the solubility at low temperature is important, if the content is set to be higher, the effect is high. When the T _NI is important, If the content is set to be large, the effect is high. Furthermore, when improving the dripping trace or the afterimage characteristics, it is preferable to set the range of the content to the middle.

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

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

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

(In the formula, R ^N321 and R ^N322 independently represent the same meaning as ^{R N11} and R ^N12 in the general formula (N-3))

R ^N321 and R ^{N322 are} preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably propyl or pentyl.

The compound represented by the general formula (N-3-2) may be used alone or in combination of two or more compounds. The types of compounds that can be combined are not particularly limited, and they can be combined appropriately according to the required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. Regarding the type of compound used, for example, as an embodiment of the present invention, there are one, two, three, four, or five or more types.

When the improvement of △ε is important, it is better to set the content to be higher. When the solubility at low temperature is important, if the content is set to be higher, the effect is high. When the T _NI is important, If the content is set to be small, the effect is high. Furthermore, when improving the dripping trace or the afterimage characteristics, it is preferable to set the range of the content to the middle.

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

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

The composition of the present invention preferably contains one or more compounds represented by the general formula (J). These compounds are equivalent to compounds with positive dielectric properties (Δε greater than 2).

(In the formula, R ^J1 represents an alkyl group with 1 to 8 carbon atoms. One of the alkyl groups or two or more non-adjacent -CH ₂ -s may be independently replaced by -CH=CH-,- C≡C-, -O-, -CO-, -COO- or -OCO- substitution; n ^J1 represents 0, 1, 2, 3, or 4; A ^J1 , A ^J2 and A ^J3 each independently represent a choice ( a) 1,4- cyclohexylene (in the presence of a group -CH ₂ - adjacent to the two or more of -CH ₂ - may be replaced by -O-), (b) 1,4 -Phenylene (1 -CH= or 2 or more non-adjacent -CH= in the group can also be substituted by -N=), and (c) naphthalene-2,6-diyl, 1,2,3,4-Tetrahydronaphthalene-2,6-diyl or decahydronaphthalene-2,6-diyl (present in naphthalene-2,6-diyl or 1,2,3,4-tetrahydronaphthalene-2,6-diyl (1 of the hydronaphthalene-2,6-diyl group -CH= or 2 or more non-adjacent -CH= can also be substituted by -N=)

The groups in the group consisting of the above groups (a), group (b) and group (c) can also be independently replaced by a cyano group, a fluorine atom, a chlorine atom, a methyl group, a trifluoromethyl group or a trifluoromethoxy group. Group substitution; Z ^J1 and Z ^J2 each independently represent a single bond, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -OCF ₂ -, -CF ₂ O -, -COO-, -OCO- or -C≡C-; when n ^J1 is 2, 3 or 4 and there are multiple A ^J2s , they can be the same or different, and n ^J1 is 2, 3 Or 4 and when there are multiple Z ^J1 , they may be the same or different; X ^J1 represents a hydrogen atom, a fluorine atom, a chlorine atom, a cyano group, a trifluoromethyl group, a fluoromethoxy group, a difluoromethoxy group , Trifluoromethoxy or 2,2,2-trifluoroethyl)

In the general formula (J), R ^{J1 is} preferably an alkyl group with 1 to 8 carbon atoms, an alkoxy group with 1 to 8 carbon atoms, an alkenyl group with 2 to 8 carbon atoms, or an alkenyl group with 2 to 8 carbon atoms. The alkenyloxy group is preferably an alkyl group with 1 to 5 carbon atoms, an alkoxy group with 1 to 5 carbon atoms, an alkenyl group with 2 to 5 carbon atoms, or an alkenyloxy group with 2 to 5 carbon atoms, and more It is preferably an alkyl group with 1 to 5 carbon atoms or an alkenyl group with 2 to 5 carbon atoms, more preferably an alkyl group with 2 to 5 carbon atoms or an alkenyl group with 2 to 3 carbon atoms, particularly preferably a carbon atom Number 3 alkenyl (propenyl).

When reliability is important, R ^{J1 is} preferably an alkyl group, and when viscosity reduction is important, it is preferably an alkenyl group.

烷等 飽和環結構之情形時，較佳為直鏈狀之碳原子數1~5之烷基、直鏈狀之碳原子數1~4之烷氧基及直鏈狀之碳原子數2~5之烯基。為了使向列相穩定，較佳為碳原子及存在之情形時之氧原子的合計在5以下，較佳為直鏈狀。 In addition, when the ring structure to which it is bonded is a phenyl group (aromatic), it is preferably a linear alkyl group with 1 to 5 carbon atoms, and a linear alkyl group with 1 to 4 carbon atoms. The oxy group and the alkenyl group with 4~5 carbon atoms are bonded to the ring structure of cyclohexane, pyran and two

In the case of a saturated ring structure such as an alkane, it is preferably a straight-chain alkyl group with 1 to 5 carbon atoms, a straight-chain alkoxy group with 1 to 4 carbon atoms, and a straight-chain carbon number from 2 to 5 of alkenyl. In order to stabilize the nematic phase, the total of carbon atoms and oxygen atoms when present is preferably 5 or less, and it is preferably linear.

As the alkenyl group, a group selected from the group represented by any one of the formula (R1) to the formula (R5) is preferred. (The black dots in each formula represent the carbon atoms in the ring structure to which the alkenyl group is bonded)

When it is required to increase Δn, A ^J1 , A ^J2 and A ^{J3 are} preferably independently aromatic. In order to improve the response speed, they are preferably aliphatic, and preferably represent trans-1,4- Cyclohexylene, 1,4-phenylene, 1,4-cyclohexenylene, 1,4-bicyclo(2.2.2) octylene, piperidine-1,4-diyl, naphthalene-2, 6-diyl, decahydronaphthalene-2,6-diyl or 1,2,3,4-tetrahydronaphthalene-2,6-diyl, which may be substituted by a fluorine atom, and more preferably represent the following structure,

It is more preferable to show the following structure.

Z ^J1 and Z ^J2 preferably each independently represent -CH ₂ O-, -OCH ₂ -, -CF ₂ O-, -CH ₂ CH ₂ -, -CF ₂ CF ₂ -or a single bond, more preferably- OCH ₂ -, -CF ₂ O-, -CH ₂ CH ₂ -or a single bond, particularly preferably -OCH ₂ -, -CF ₂ O- or a single bond.

X ^{J1 is} preferably a fluorine atom or a trifluoromethoxy group, and preferably a fluorine atom.

n ^{J1 is} preferably 0, 1, 2 or 3, preferably 0, 1 or 2. When the focus is on improving the situation of △ε, it is preferably 0 or 1, and when the situation of _{T NI is emphasized, it is more} Preferably, it is 1 or 2.

The types of compounds that can be combined are not particularly limited, and they can be used in combination according to the required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. Regarding the types of compounds used, for example, as an embodiment of the present invention, there are one type, two types, and three types. Furthermore, in another embodiment of this invention, there are 4 types, 5 types, 6 types, and 7 or more types.

In the composition of the present invention, the content of the compound represented by general formula (J) must be based on solubility at low temperature, transition temperature, electrical reliability, birefringence, process suitability, dripping traces, and residual image , Dielectric anisotropy and other required performance to adjust appropriately.

Relative to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by the general formula (J) is 1%, 10%, 20%, 30%, 40%, 50%, 55%, 60%, 65%, 70%, 75%, 80%. With regard to the preferred upper limit of the content, for example, in one aspect of the present invention, it is 95%, 85%, 75%, 65%, 55%, 45%, 35% relative to the total amount of the composition of the present invention. , 25%.

When the viscosity of the composition of the present invention is kept low and a composition with a fast response speed is required, it is preferable to make the above-mentioned lower limit value low and the upper limit value low. _{Furthermore, when the T NI} of the composition of the present invention is kept high and a composition with good temperature stability is required, it is preferable to make the above-mentioned lower limit value low and the upper limit value low. Moreover, when it is desired to increase the dielectric anisotropy in order to keep the driving voltage low, it is preferable to make the above-mentioned lower limit value high and the upper limit value high.

When reliability is important, R ^{J1 is} preferably an alkyl group, and when viscosity reduction is important, it is preferably an alkenyl group.

The compound represented by general formula (J) is preferably a compound represented by general formula (M) and a compound represented by general formula (K).

The composition of the present invention preferably contains one or more compounds represented by the general formula (M). Such compounds are equivalent to compounds with positive dielectric properties (Δε greater than 2).

(In the formula, R ^M1 represents an alkyl group with 1 to 8 carbon atoms. One of the alkyl groups or two or more non-adjacent -CH ₂ -s may be independently replaced by -CH=CH-,- C≡C-, -O-, -CO-, -COO- or -OCO- substitution; n ^M1 represents 0, 1, 2, 3, or 4; A ^M1 and A ^M2 each independently represent one of (a)1 , 4-cyclohexylene (in the presence of a group -CH ₂ - adjacent to the two or more of -CH ₂ - may be substituted with -O- or -S-), and (b) 1, 4-Phenylene (1 -CH= or 2 or more non-adjacent -CH= in the group can also be substituted by -N=)

In the group consisting of groups, the hydrogen atoms on the above-mentioned groups (a) and (b) may be independently replaced by cyano, fluorine or chlorine atoms; Z ^M1 and Z ^M2 each independently represent a single bond, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -OCF ₂ -, -CF ₂ O-, -COO-, -OCO- or -C≡C- ; When n ^M1 is 2, 3, or 4 and there are multiple A ^M2s , they can be the same or different. When n ^M1 is 2, 3 or 4 and there are multiple Z ^M1s , they can be The same may be different; X ^M1 and X ^M3 each independently represent a hydrogen atom, a chlorine atom or a fluorine atom; X ^M2 represents a hydrogen atom, a fluorine atom, a chlorine atom, a cyano group, a trifluoromethyl group, a fluoromethoxy group, and a difluoro Methoxy, trifluoromethoxy or 2,2,2-trifluoroethyl.

In the general formula (M), R ^{M1 is} preferably an alkyl group with 1 to 8 carbon atoms, an alkoxy group with 1 to 8 carbon atoms, an alkenyl group with 2 to 8 carbon atoms, or an alkenyl group with 2 to 8 carbon atoms. The alkenyloxy group is preferably an alkyl group with 1 to 5 carbon atoms, an alkoxy group with 1 to 5 carbon atoms, an alkenyl group with 2 to 5 carbon atoms, or an alkenyloxy group with 2 to 5 carbon atoms, and more It is preferably an alkyl group with 1 to 5 carbon atoms or an alkenyl group with 2 to 5 carbon atoms, more preferably an alkyl group with 2 to 5 carbon atoms or an alkenyl group with 2 to 3 carbon atoms, particularly preferably a carbon atom Number 3 alkenyl (propenyl).

When reliability is important, R ^{M1 is} preferably an alkyl group, and when viscosity reduction is important, it is preferably an alkenyl group.

烷等飽和環結構之情形時，較佳為直鏈狀之碳原子數1~5之烷基、直鏈狀之碳原子數1~4之烷氧基及直鏈狀之碳原子數2~5之烯基。為了使向列相穩定，較佳為碳原子及存在之情形時之氧原子的合計在5以下，較佳為直鏈狀。 In addition, when the ring structure to which it is bonded is a phenyl group (aromatic), it is preferably a linear alkyl group with 1 to 5 carbon atoms, and a linear alkyl group with 1 to 4 carbon atoms. The oxy group and the alkenyl group with 4~5 carbon atoms are bonded to the ring structure of cyclohexane, pyran and two

In the case of a saturated ring structure such as an alkane, it is preferably a straight-chain alkyl group with 1 to 5 carbon atoms, a straight-chain alkoxy group with 1 to 4 carbon atoms, and a straight-chain carbon number from 2 to 5 of alkenyl. In order to stabilize the nematic phase, the total of carbon atoms and oxygen atoms when present is preferably 5 or less, and it is preferably linear.

As the alkenyl group, a group selected from the group represented by any one of the formula (R1) to the formula (R5) is preferred. (The black dots in each formula represent the carbon atoms in the ring structure to which the alkenyl group is bonded)

A ^M1 and A ^M2 are independent of each other. When it is required to increase Δn, they are preferably aromatic. In order to improve the response speed, they are preferably aliphatic, and preferably represent trans-1,4-cyclohexylene, 1,4-phenylene, 2-fluoro-1,4-phenylene, 3-fluoro-1,4-phenylene, 3,5-difluoro-1,4-phenylene, 2,3 -Difluoro-1,4-phenylene, 1,4-cyclohexenyl, 1,4-bicyclo (2.2.2) octyl, piperidine-1,4-diyl, naphthalene-2, 6-diyl, decahydronaphthalene-2,6-diyl or 1,2,3,4-tetrahydronaphthalene-2,6-diyl, more preferably represents the following structure,

It is more preferable to show the following structure.

Z ^M1 and Z ^M2 is preferably each independently represent _{-CH 2 O -, - CF 2} O -, - CH 2 CH 2 -, - CF 2 CF 2 - or a single bond, more preferably -CF ₂ O-, -CH ₂ CH ₂ -or a single bond, particularly preferably -CF ₂ O- or a single bond.

n ^{M1 is} preferably 0, 1, 2 or 3, more preferably 0, 1 or 2. When the focus is on improving the situation of △ε, it is preferably 0 or 1, and when the situation of _{T NI is emphasized, it is more} Preferably, it is 1 or 2.

The types of compounds that can be combined are not particularly limited, and they can be used in combination according to the required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. Regarding the types of compounds used, for example, as an embodiment of the present invention, there are one type, two types, and three types. Furthermore, in another embodiment of this invention, there are 4 types, 5 types, 6 types, and 7 or more types.

In the composition of the present invention, the content of the compound represented by the general formula (M) must be based on solubility at low temperature, transition temperature, electrical reliability, birefringence, process suitability, dripping traces, and residual image , Dielectric anisotropy and other required performance to adjust appropriately.

Relative to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by formula (M) is 1%, 10%, 20%, 30%, 40%, 50%, 55%, 60 %, 65%, 70%, 75%, 80%. With regard to the preferred upper limit of the content, for example, in one aspect of the present invention, it is 95%, 85%, 75%, 65%, 55%, 45%, 35% relative to the total amount of the composition of the present invention. , 25%.

When the viscosity of the composition of the present invention is kept low and a composition with a fast response speed is required, it is preferable to make the above-mentioned lower limit value low and the upper limit value low. _{Furthermore, when the T NI} of the composition of the present invention is kept high and a composition with good temperature stability is required, it is preferable to make the above-mentioned lower limit value low and the upper limit value low. Moreover, when it is desired to increase the dielectric anisotropy in order to keep the driving voltage low, it is preferable to make the above-mentioned lower limit value high and the upper limit value high.

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

(In the formula, R ^M11 represents an alkyl group with 1 to 5 carbon atoms, an alkenyl group with 2 to 5 carbon atoms or an alkoxy group with 1 to 4 carbon atoms, and X ^M11 to X ^M15 each independently represent a hydrogen atom or Fluorine atom, Y ^M11 represents fluorine atom or OCF ₃ )

The types of compounds that can be combined are not particularly limited, and they can be used in combination according to the required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. Regarding the type of compound used, for example, as an embodiment of the present invention, there are one type, two types, or three or more types.

Relative to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by formula (M-1) is 1%, 2%, 5%, 8%, 10%, 13%, 15% , 18%, 20%, 22%, 25%, 30%. The preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

When the viscosity of the composition of the present invention is kept low and a composition with a fast response speed is required, it is preferable to make the above-mentioned lower limit value low and the upper limit value low. _{Furthermore, when the T NI} of the composition of the present invention is kept high and a composition with good temperature stability is required, it is preferable to make the above-mentioned lower limit value low and the upper limit value low. Moreover, when it is desired to increase the dielectric anisotropy in order to keep the driving voltage low, it is preferable to make the above-mentioned lower limit value high and the upper limit value high.

Further, the compound represented by the general formula (M-1) is specifically preferably the compound represented by the formula (M-1.1) to the formula (M-1.4), preferably the formula (M-1.1) or the formula ( The compound represented by M-1.2) is more preferably a compound represented by formula (M-1.2). In addition, it is also preferable to use the compound represented by the formula (M-1.1) or the formula (M-1.2) at the same time.

Relative to the total amount of the composition of the present invention, the lower limit of the preferable content of the compound represented by formula (M-1.1) is 1%, 2%, 5%, and 6%. The preferred upper limit value of the content is 15%, 13%, 10%, 8%, 5%.

Relative to the total amount of the composition of the present invention, the lower limit of the preferable content of the compound represented by formula (M-1.2) is 1%, 2%, 5%, and 6%. The preferred upper limit value of the content is 30%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%.

Relative to the total amount of the composition of the present invention, the lower limit of the total content of the compounds represented by formula (M-1.1) and formula (M-1.2) is 1%, 2%, 5%, 6% . The preferred upper limit value of the content is 30%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%.

Furthermore, the compound represented by general formula (M) is preferably a compound selected from the group of compounds represented by general formula (M-2), for example.

(In the formula, R ^M21 represents an alkyl group with 1 to 5 carbon atoms, an alkenyl group with 2 to 5 carbon atoms, or an alkoxy group with 1 to 4 carbon atoms. X ^M21 and X ^M22 each independently represent a hydrogen atom or Fluorine atom, Y ^M21 represents fluorine atom, chlorine atom or OCF ₃ )

Relative to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by formula (M-1) is 1%, 2%, 5%, 8%, 10%, 13%, 15% , 18%, 20%, 22%, 25%, 30%. The preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

When the viscosity of the composition of the present invention is kept low and a composition with a fast response speed is required, it is preferable to make the above-mentioned lower limit value low and the upper limit value low. _{Further, when the T NI} of the composition of the present invention is kept high and a composition that is difficult to produce afterimages is required, it is preferable to make the above-mentioned lower limit value low and the upper limit value low. In addition, when it is desired to increase the dielectric anisotropy in order to keep the driving voltage low, it is preferable to make the above-mentioned lower limit value high and the upper limit value high.

Further, the compound represented by the general formula (M-2) is preferably the compound represented by the formula (M-2.1) to the formula (M-2.5), preferably the formula (M-2.3) or/and the formula (M- 2.5) The compound represented.

Relative to the total amount of the composition of the present invention, the lower limit of the preferable content of the compound represented by formula (M-2.2) is 1%, 2%, 5%, and 6%. The preferred upper limit value of the content is 15%, 13%, 10%, 8%, 5%.

Relative to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by formula (M-2.3) is 1%, 2%, 5%, and 6%. The preferred upper limit value of the content is 30%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%.

Relative to the total amount of the composition of the present invention, the lower limit of the preferable content of the compound represented by formula (M-2.5) is 1%, 2%, 5%, 6%. The preferred upper limit value of the content is 30%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%.

Relative to the total amount of the composition of the present invention, the lower limit of the preferable content of the total of the compounds represented by formula (M-2.2), (M-2.3) and formula (M-2.5) is 1% and 2% , 5%, 6%. The preferred upper limit value of the content is 30%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%.

The content is preferably 1% or more relative to the total amount of the composition of the present invention, more preferably 5% or more, more preferably 8% or more, more preferably 10% or more, more preferably 14% or more, particularly preferably More than 16%. In addition, considering solubility at low temperature, transition temperature, electrical reliability, etc., the maximum ratio is preferably 30% or less, more preferably 25% or less, more preferably 22% or less, and particularly preferably less than 20 %.

The compound represented by general formula (M) used in the composition of the present invention is preferably a compound represented by general formula (M-3).

(In the formula, R ^M31 represents an alkyl group with 1 to 5 carbon atoms, an alkenyl group with 2 to 5 carbon atoms or an alkoxy group with 1 to 4 carbon atoms, and X ^M31 to X ^M36 each independently represent a hydrogen atom or Fluorine atom, Y ^M31 represents fluorine atom, chlorine atom or OCF ₃ )

Compounds that can be combined are not particularly limited. Considering solubility at low temperature, transition temperature, electrical reliability, birefringence, etc., it is preferable to combine one to two or more.

Regarding the content of the compound represented by the general formula (M-3), considering the characteristics of solubility at low temperature, transition temperature, electrical reliability, birefringence, etc., there are upper and lower limits in each embodiment Limit.

Relative to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by formula (M-3) is 1%, 2%, 4%, 5%, 8%, 10%, 13% , 15%, 18%, 20%. The preferred upper limit value of the content is 20%, 18%, 15%, 13%, 10%, 8%, 5%.

Further, the compound represented by the general formula (M-3) used in the composition of the present invention is specifically preferably the compound represented by the formula (M-3.1) to the formula (M-3.8), among which, the more Preferably, it contains a compound represented by formula (M-3.1) and/or formula (M-3.2).

Relative to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by formula (M-3.1) is 1%, 2%, 4%, 5%, 8%, 10%, 13% , 15%, 18%, 20%. The preferred upper limit value of the content is 20%, 18%, 15%, 13%, 10%, 8%, 5%.

Relative to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by formula (M-3.2) is 1%, 2%, 4%, 5%, 8%, 10%, 13% , 15%, 18%, 20%. The preferred upper limit value of the content is 20%, 18%, 15%, 13%, 10%, 8%, 5%.

Relative to the total amount of the composition of the present invention, the lower limit of the total content of the compounds represented by formula (M-3.1) and formula (M-3.2) is 1%, 2%, 4%, 5% , 8%, 10%, 13%, 15%, 18%, 20%. The preferred upper limit value of the content is 20%, 18%, 15%, 13%, 10%, 8%, 5%.

Furthermore, the compound represented by general formula (M) is preferably a compound selected from the group represented by general formula (M-4).

(In the formula, R ^M41 represents an alkyl group with 1 to 5 carbon atoms, an alkenyl group with 2 to 5 carbon atoms or an alkoxy group with 1 to 4 carbon atoms, and X ^M41 to X ^M48 each independently represent a fluorine atom or Hydrogen atom, Y ^M41 represents fluorine atom, chlorine atom or OCF ₃ )

Compounds that can be combined are not particularly limited, and considering solubility at low temperature, transition temperature, electrical reliability, birefringence, etc., it is preferable to combine one, two, or three or more types.

Regarding the content of the compound represented by the general formula (M-4), considering the solubility at low temperature, transition temperature, electrical reliability, birefringence and other characteristics, each embodiment has its upper limit and lower limit Limit.

Relative to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by formula (M-4) is 1%, 2%, 4%, 5%, 8%, 10%, 13% , 15%, 18%, 20%. The preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

When the composition of the present invention is used for a liquid crystal display device with a small cell gap, it is more suitable that the content of the compound represented by the general formula (M-4) is large. When used for a liquid crystal display element with a small driving voltage, it is more suitable that the content of the compound represented by the general formula (M-4) is large. In addition, when used for liquid crystal display elements used in a low-temperature environment, it is more suitable that the content of the compound represented by the general formula (M-4) is small. In the case of a composition used for a liquid crystal display element with a fast response speed, it is more suitable that the content of the compound represented by the general formula (M-4) is small.

Further, the compound represented by the general formula (M-4) used in the composition of the present invention is specifically preferably the compound represented by the formula (M-4.1) to the formula (M-4.4), among which, the more It is preferable to contain the compound represented by formula (M-4.2) to formula (M-4.4), and it is more preferable to contain the compound represented by formula (M-4.2).

Furthermore, it is preferable to contain one or two or more compounds selected from the compounds represented by the general formulas (M-3) and (M-4), relative to the total amount of the composition of the present invention, the general formula (M -3) and the lower limit of the preferable content of the total of the compounds represented by (M-4) are 1%, 2%, 4%, 5%, 8%, 10%, 13%, 15%, 18% , 20%, the preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

Furthermore, the compound represented by general formula (M) is preferably a compound represented by general formula (M-5).

(In the formula, R ^M51 represents an alkyl group with 1 to 5 carbon atoms, an alkenyl group with 2 to 5 carbon atoms or an alkoxy group with 1 to 4 carbon atoms, and X ^M51 and X ^M52 each independently represent a hydrogen atom or Fluorine atom, Y ^M51 represents fluorine atom, chlorine atom or OCF ₃ )

The types of compounds that can be combined are not limited, and considering solubility at low temperatures, transition temperature, electrical reliability, birefringence, etc., they are appropriately combined for use in each embodiment. For example, in one embodiment of the present invention, it is 1 type, in another embodiment, it is 2 types of combinations, in still another embodiment, it is 3 types, and in still another embodiment, it is 4 types The combination is 5 combinations in still another embodiment, and 6 or more combinations in still another embodiment.

Relative to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by formula (M-5) is 1%, 2%, 5%, 8%, 10%, 13%, 15% , 18%, 20%, 22%, 25%, 30%. The upper limit of the preferred content is 50%, 45%, 40%, 35%, 33%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

When the viscosity of the composition of the present invention is kept low and a composition with a fast response speed is required, it is preferable to make the above-mentioned lower limit value low and the upper limit value low. _{Further, when the T NI} of the composition of the present invention is kept high and a composition that is difficult to produce afterimages is required, it is preferable to make the above-mentioned lower limit value low and the upper limit value low. In addition, when it is desired to increase the dielectric anisotropy in order to keep the driving voltage low, it is preferable to make the above-mentioned lower limit value high and the upper limit value high.

Further, the compound represented by the general formula (M-5) is preferably the compound represented by the formula (M-5.1) to the formula (M-5.4), preferably the formula (M-5.1) to the formula (M-5.4) The compound represented.

Relative to the total amount of the composition of the present invention, the lower limit of the preferable content of the compound is 1%, 2%, 5%, 8%, 10%, 13%, 15%. The preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

Further, the compound represented by the general formula (M-5) is preferably the compound represented by the formula (M-5.11) to the formula (M-5.17), preferably the formula (M-5.11), the formula (M-5.13) And the compound represented by formula (M-5.17).

Relative to the total amount of the composition of the present invention, the lower limit of the preferable content of the compound is 1%, 2%, 5%, 8%, 10%, 13%, 15%. The preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

Further, the compound represented by the general formula (M-5) is preferably the compound represented by the formula (M-5.21) to the formula (M-5.28), preferably the formula (M-5.21), the formula (M-5.22) , Compounds represented by formula (M-5.23) and formula (M-5.25).

Relative to the total amount of the composition of the present invention, the lower limit of the preferable content of the compound is 1%, 2%, 5%, 8%, 10%, 13%, 15%, 18%, 20%, 22%, 25%, 30%. The upper limit of the preferred content is 40%, 35%, 33%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

Furthermore, the compound represented by general formula (M) is preferably a compound represented by general formula (M-6).

(In the formula, R ^M61 represents an alkyl group with 1 to 5 carbon atoms, an alkenyl group with 2 to 5 carbon atoms or an alkoxy group with 1 to 4 carbon atoms, and X ^M61 to X ^M64 each independently represent a fluorine atom or Hydrogen atom, Y ^M61 represents fluorine atom, chlorine atom or OCF ₃ )

The types of compounds that can be combined are not limited, and considering solubility at low temperature, transition temperature, electrical reliability, birefringence, etc., they are appropriately combined in each embodiment.

Relative to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by formula (M-6) is 1%, 2%, 4%, 5%, 8%, 10%, 13% , 15%, 18%, 20%. The preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

When the composition of the present invention is used for a liquid crystal display device with a small driving voltage, it is suitable to have a larger content of the compound represented by the general formula (M-6). In the case of a composition used for a liquid crystal display element with a fast response speed, it is suitable to make the content of the compound represented by the general formula (M-6) smaller.

Further, the compound represented by the general formula (M-6) is specifically preferably the compound represented by the formula (M-6.1) to the formula (M-6.4), and among them, preferably contains the formula (M-6.2) And the compound represented by formula (M-6.4).

Relative to the total amount of the composition of the present invention, the lower limit of the preferable content of the compound is 1%, 2%, 4%, 5%, 8%, 10%, 13%, 15%, 18%, 20%. The preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

Furthermore, the compound represented by the general formula (M-6) is specifically preferably the compound represented by the formula (M-6.11) to the formula (M-6.14), and among them, the compound preferably contains the formula (M-6.12) And the compound represented by formula (M-6.14).

Relative to the total amount of the composition of the present invention, the lower limit of the preferable content of the compound is 1%, 2%, 4%, 5%, 8%, 10%, 13%, 15%, 18%, 20%. The preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

Furthermore, the compound represented by the general formula (M-6) is specifically preferably the compound represented by the formula (M-6.21) to the formula (M-6.24), and among them, the compound preferably contains the formula (M-6.21) , Compounds represented by formula (M-6.22) and formula (M-6.24).

Relative to the total amount of the composition of the present invention, the lower limit of the preferable content of the compound is 1%, 2%, 4%, 5%, 8%, 10%, 13%, 15%, 18%, 20%. The preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

Furthermore, the compound represented by general formula (M-6) is specifically preferably a compound represented by formula (M-6.31) to formula (M-6.34). Among them, it is preferable to contain the compound represented by formula (M-6.31) and formula (M-6.32).

Relative to the total amount of the composition of the present invention, the lower limit of the preferable content of the compound is 1%, 2%, 4%, 5%, 8%, 10%, 13%, 15%, 18%, 20%. The preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

Furthermore, the compound represented by the general formula (M-6) is specifically preferably the compound represented by the formula (M-6.41) to the formula (M-6.44), and among them, the compound preferably contains the formula (M-6.42) The compound represented.

Relative to the total amount of the composition of the present invention, the lower limit of the preferable content of the compound is 1%, 2%, 4%, 5%, 8%, 10%, 13%, 15%, 18%, 20%. The preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

Furthermore, the compound represented by general formula (M) is preferably a compound selected from the group of compounds represented by general formula (M-7).

(In the formula, X ^M71 to X ^M76 each independently represent a fluorine atom or a hydrogen atom, R ^M71 represents an alkyl group with 1 to 5 carbon atoms, an alkenyl group with 2 to 5 carbon atoms, or an alkane with 1 to 4 carbon atoms ^Oxy group, Y M71 represents fluorine atom or OCF ₃ )

The type of the compound that can be combined is not particularly limited, and it is preferable to contain one to two kinds from these compounds, more preferably to contain one to three kinds, and even more preferably to contain one to four kinds.

Regarding the content of the compound represented by the general formula (M-7), considering the solubility at low temperature, transition temperature, electrical reliability, birefringence and other characteristics, each embodiment has its upper limit and lower limit Limit.

Relative to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by formula (M-7) is 1%, 2%, 4%, 5%, 8%, 10%, 13% , 15%, 18%, 20%. The preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

When the composition of the present invention is used for a liquid crystal display device with a small cell gap, it is suitable to have a larger content of the compound represented by the general formula (M-7). When it is used for a liquid crystal display element with a small driving voltage, it is suitable to make the content of the compound represented by general formula (M-7) large. Moreover, when it is used for liquid crystal display elements used in a low-temperature environment, it is suitable to make the content of the compound represented by general formula (M-7) small. In the case of a composition used for a liquid crystal display element with a fast response speed, it is suitable to make the content of the compound represented by the general formula (M-7) smaller.

Furthermore, the compound represented by general formula (M-7) is preferably a compound represented by formula (M-7.1) to formula (M-7.4), and is preferably a compound represented by formula (M-7.2).

Relative to the total amount of the composition of the present invention, the lower limit of the preferable content of the compound is 1%, 2%, 4%, 5%, 8%, 10%, 13%, 15%, 18%, 20%. The preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

Furthermore, the compound represented by the general formula (M-7) is preferably the compound represented by the formula (M-7.11) to the formula (M-7.14), preferably the formula (M-7.11) and the formula (M-7.12) The compound represented.

Relative to the total amount of the composition of the present invention, the lower limit of the preferable content of the compound is 1%, 2%, 4%, 5%, 8%, 10%, 13%, 15%, 18%, 20%. The preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

Further, the compound represented by the general formula (M-7) is preferably the compound represented by the formula (M-7.21) to the formula (M-7.24), preferably the formula (M-7.21) and the formula (M-7.22) The compound represented.

Relative to the total amount of the composition of the present invention, the lower limit of the preferable content of the compound is 1%, 2%, 4%, 5%, 8%, 10%, 13%, 15%, 18%, 20%. The preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

Furthermore, the compound represented by general formula (M) is preferably a compound represented by general formula (M-8).

，1,4-伸苯基上之氫原子亦可被氟原子取代) (In the formula, X ^M81 to X ^M84 each independently represent a fluorine atom or a hydrogen atom, Y ^M81 represents a fluorine atom, a chlorine atom or -OCF ₃ , and R ^M81 represents an alkyl group with 1 to 5 carbon atoms and 2 to Alkenyl group 5 or alkoxy group having 1 to 4 carbon atoms, A ^M81 and A ^M82 each independently represent 1,4-cyclohexylene, 1,4-phenylene or

, The hydrogen atom on 1,4-phenylene can also be replaced by fluorine atom)

Relative to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by the general formula (M-8) is 1%, 2%, 4%, 5%, 8%, 10%, 13 %, 15%, 18%, 20%. The preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

When the viscosity of the composition of the present invention is kept low and a composition with a fast response speed is required, it is preferable to make the above-mentioned lower limit value low and the upper limit value low. Furthermore, when a composition that hardly produces afterimages is required, it is preferable to make the above-mentioned lower limit value low and the upper limit value low. Moreover, when it is desired to increase the dielectric anisotropy in order to keep the driving voltage low, it is preferable to make the above-mentioned lower limit value high and the upper limit value high.

Further, the compound represented by the general formula (M-8) used in the composition of the present invention is specifically preferably the compound represented by the formula (M-8.1) to the formula (M-8.4), among which, the more Preferably, it contains the compound represented by formula (M-8.1) and formula (M-8.2).

Relative to the total amount of the composition of the present invention, the lower limit of the preferable content of the compound is 1%, 2%, 4%, 5%, 8%, 10%, 13%, 15%, 18%, 20%. The preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

Furthermore, the compound represented by the general formula (M-8) used in the composition of the present invention is specifically preferably the compound represented by the formula (M-8.11) to the formula (M-8.14), among which the more It is preferable to contain the compound represented by formula (M-8.12).

Relative to the total amount of the composition of the present invention, the lower limit of the preferable content of the compound is 1%, 2%, 4%, 5%, 8%, 10%, 13%, 15%, 18%, 20%. The preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

Further, the compound represented by the general formula (M-8) used in the composition of the present invention is specifically preferably the compound represented by the formula (M-8.21) to the formula (M-8.24), among which, more Preferably, it contains the compound represented by formula (M-8.22).

Relative to the total amount of the composition of the present invention, the lower limit of the preferable content of the compound is 1%, 2%, 4%, 5%, 8%, 10%, 13%, 15%, 18%, 20%. The preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

Furthermore, the compound represented by the general formula (M-8) used in the composition of the present invention is specifically preferably the compound represented by the formula (M-8.31) to the formula (M-8.34), among which, the more Preferably, it contains the compound represented by formula (M-8.32).

Relative to the total amount of the composition of the present invention, the lower limit of the preferable content of the compound is 1%, 2%, 4%, 5%, 8%, 10%, 13%, 15%, 18%, 20%. The preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

Furthermore, the compound represented by the general formula (M-8) used in the composition of the present invention is specifically preferably the compound represented by the formula (M-8.41) to the formula (M-8.44), among which the more Preferably, it contains the compound represented by formula (M-8.42).

Relative to the total amount of the composition of the present invention, the lower limit of the preferable content of the compound is 1%, 2%, 4%, 5%, 8%, 10%, 13%, 15%, 18%, 20%. The preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

Furthermore, the compound represented by the general formula (M-8) used in the composition of the present invention is specifically preferably the compound represented by the formula (M-8.51) to the formula (M-8.54), among which, more Preferably, it contains the compound represented by formula (M-8.52).

Relative to the total amount of the composition of the present invention, the lower limit of the preferable content of the compound is 1%, 2%, 4%, 5%, 8%, 10%, 13%, 15%, 18%, 20%. The preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

Furthermore, the compound represented by general formula (M) may have the following partial structure in its structure.

(The black dots in the formula indicate the carbon atoms in the ring structure bonded by the above partial structure)

The compound having the above partial structure is preferably a compound represented by the general formulas (M-10) to (M-18).

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

(In the formula, X ^M101 and X ^M102 each independently represent a fluorine atom or a hydrogen atom, Y ^M101 represents a fluorine atom, a chlorine atom or -OCF ₃ , and R ^M101 represents an alkyl group with 1 to 5 carbon atoms and 2 to carbon atoms. 5 alkenyl or alkoxy with 1 to 4 carbon atoms, W ^M101 and W ^M102 each independently represent -CH ₂ -or -O-)

Relative to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by the general formula (M-10) is 1%, 2%, 4%, 5%, 8%, 10%, 13 %, 15%, 18%, 20%. The preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

When the viscosity of the composition of the present invention is kept low and a composition with a fast response speed is required, it is preferable to make the above-mentioned lower limit value low and the upper limit value low. Furthermore, when a composition that hardly produces afterimages is required, it is preferable to make the above-mentioned lower limit value low and the upper limit value low. Moreover, when it is desired to increase the dielectric anisotropy in order to keep the driving voltage low, it is preferable to make the above-mentioned lower limit value high and the upper limit value high.

Further, the compound represented by the general formula (M-10) used in the composition of the present invention is specifically preferably the compound represented by the formula (M-10.1) to the formula (M-10.12), among which, the more Preferably, it contains a compound represented by formula (M-10.5) to formula (M-10.12).

Relative to the total amount of the composition of the present invention, the lower limit of the preferable content of the compound is 1%, 2%, 4%, 5%, 8%, 10%, 13%, 15%, 18%, 20%. The preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

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

(In the formula, X ^M111 ~ X ^M114 each independently represent a fluorine atom or a hydrogen atom, Y ^M111 represents a fluorine atom, a chlorine atom or -OCF ₃ , and R ^M111 represents an alkyl group with 1 to 5 carbon atoms and 2 to carbon atoms. 5 alkenyl or alkoxy with 1 to 4 carbon atoms)

Relative to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by the general formula (M-11) is 1%, 2%, 4%, 5%, 8%, 10%, 13 %, 15%, 18%, 20%. The preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

When the viscosity of the composition of the present invention is kept low and a composition with a fast response speed is required, it is preferable to make the above-mentioned lower limit value low and the upper limit value low. Furthermore, when a composition that hardly produces afterimages is required, it is preferable to make the above-mentioned lower limit value low and the upper limit value low. Moreover, when it is desired to increase the dielectric anisotropy in order to keep the driving voltage low, it is preferable to make the above-mentioned lower limit value high and the upper limit value high.

Furthermore, the compound represented by the general formula (M-11) used in the composition of the present invention is specifically preferably the compound represented by the formula (M-11.1) to the formula (M-11.8), among which, the more Preferably, it contains the compound represented by formula (M-11.1) to formula (M-11.4).

Relative to the total amount of the composition of the present invention, the lower limit of the preferable content of the compound is 1%, 2%, 4%, 5%, 8%, 10%, 13%, 15%, 18%, 20%. The preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

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

(In the formula, X ^M121 and X ^M122 each independently represent a fluorine atom or a hydrogen atom, Y ^M121 represents a fluorine atom, a chlorine atom or -OCF ₃ , and R ^M121 represents an alkyl group with 1 to 5 carbon atoms and 2 to carbon atoms. 5 alkenyl or alkoxy with 1 to 4 carbon atoms, W ^M121 and W ^M122 each independently represent -CH ₂ -or -O-)

Relative to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by the general formula (M-12) is 1%, 2%, 4%, 5%, 8%, 10%, 13 %, 15%, 18%, 20%. The preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

When the viscosity of the composition of the present invention is kept low and a composition with a fast response speed is required, it is preferable to make the above-mentioned lower limit value low and the upper limit value low. Furthermore, when a composition that hardly produces afterimages is required, it is preferable to make the above-mentioned lower limit value low and the upper limit value low. Moreover, when it is desired to increase the dielectric anisotropy in order to keep the driving voltage low, it is preferable to make the above-mentioned lower limit value high and the upper limit value high.

Further, the compound represented by the general formula (M-12) used in the composition of the present invention is specifically preferably the compound represented by the formula (M-12.1) to the formula (M-12.12), among which, the more Preferably, it contains the compound represented by formula (M-12.5) to formula (M-12.8).

Relative to the total amount of the composition of the present invention, the lower limit of the preferable content of the compound is 1%, 2%, 4%, 5%, 8%, 10%, 13%, 15%, 18%, 20%. The preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

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

(In the formula, X ^M131 ~ X ^M134 each independently represent a fluorine atom or a hydrogen atom, Y ^M131 represents a fluorine atom, a chlorine atom or -OCF ₃ , and R ^M131 represents an alkyl group with 1 to 5 carbon atoms and 2 to carbon atoms. alkenyl or 5 carbon atoms of the alkoxy group having 1 to 4, W ^M131 W ^M132 and each independently represents -CH ₂ - or -O-)

Relative to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by the general formula (M-13) is 1%, 2%, 4%, 5%, 8%, 10%, 13 %, 15%, 18%, 20%. The preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

When the viscosity of the composition of the present invention is kept low and a composition with a fast response speed is required, it is preferable to make the above-mentioned lower limit value low and the upper limit value low. Furthermore, when a composition that hardly produces afterimages is required, it is preferable to make the above-mentioned lower limit value low and the upper limit value low. Moreover, when it is desired to increase the dielectric anisotropy in order to keep the driving voltage low, it is preferable to make the above-mentioned lower limit value high and the upper limit value high.

Further, the compound represented by the general formula (M-13) used in the composition of the present invention is specifically preferably the compound represented by the formula (M-13.1) to the formula (M-13.28), among which, the more Preferably, it contains compounds represented by formulas (M-13.1) to (M-13.4), (M-13.11) to (M-13.14), and (M-13.25) to (M-13.28).

Relative to the total amount of the composition of the present invention, the lower limit of the preferable content of the compound is 1%, 2%, 4%, 5%, 8%, 10%, 13%, 15%, 18%, 20%. The preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

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

(In the formula, X ^M141 ~ X ^M144 each independently represent a fluorine atom or a hydrogen atom, Y ^M141 represents a fluorine atom, a chlorine atom or -OCF ₃ , and R ^M141 represents an alkyl group with 1 to 5 carbon atoms and 2 to carbon atoms. Alkenyl group 5 or alkoxy group having 1 to 4 carbon atoms, W ^M141 and W ^M142 each independently represent -CH ₂ -or -O-)

Relative to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by the general formula (M-14) is 1%, 2%, 4%, 5%, 8%, 10%, 13 %, 15%, 18%, 20%. The preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

When the viscosity of the composition of the present invention is kept low and a composition with a fast response speed is required, it is preferable to make the above-mentioned lower limit value low and the upper limit value low. Furthermore, when a composition that hardly produces afterimages is required, it is preferable to make the above-mentioned lower limit value low and the upper limit value low. Moreover, when it is desired to increase the dielectric anisotropy in order to keep the driving voltage low, it is preferable to make the above-mentioned lower limit value high and the upper limit value high.

Furthermore, the compound represented by the general formula (M-14) used in the composition of the present invention is specifically preferably the compound represented by the formula (M-14.1) to the formula (M-14.8), among which, the more Preferably, it contains the compound represented by formula (M-14.5) and formula (M-14.8).

Relative to the total amount of the composition of the present invention, the lower limit of the preferable content of the compound is 1%, 2%, 4%, 5%, 8%, 10%, 13%, 15%, 18%, 20%. The preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

The compound represented by general formula (M-15) is the following.

(In the formula, X ^M151 and X ^M152 each independently represent a fluorine atom or a hydrogen atom, Y ^M151 represents a fluorine atom, a chlorine atom or -OCF ₃ , and R ^M151 represents an alkyl group with 1 to 5 carbon atoms and 2 to carbon atoms. 5 alkenyl or alkoxy with 1 to 4 carbon atoms, W ^M151 and W ^M152 each independently represent -CH ₂ -or -O-)

Relative to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by the general formula (M-15) is 1%, 2%, 4%, 5%, 8%, 10%, 13 %, 15%, 18%, 20%. The preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

When the viscosity of the composition of the present invention is kept low and a composition with a fast response speed is required, it is preferable to make the above-mentioned lower limit value low and the upper limit value low. Furthermore, when a composition that hardly produces afterimages is required, it is preferable to make the above-mentioned lower limit value low and the upper limit value low. Moreover, when it is desired to increase the dielectric anisotropy in order to keep the driving voltage low, it is preferable to make the above-mentioned lower limit value high and the upper limit value high.

Further, the compound represented by the general formula (M-15) used in the composition of the present invention is specifically preferably the compound represented by the formula (M-15.1) to the formula (M-15.14), among which, the more It is preferable to contain compounds represented by formula (M-15.5) to formula (M-15.8), and formula (M-15.11) to formula (M-15.14).

Relative to the total amount of the composition of the present invention, the lower limit of the preferable content of the compound is 1%, 2%, 4%, 5%, 8%, 10%, 13%, 15%, 18%, 20%. The preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

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

(In the formula, X ^M161 ~ X ^M164 each independently represent a fluorine atom or a hydrogen atom, Y ^M161 represents a fluorine atom, a chlorine atom or -OCF ₃ , and R ^M161 represents an alkyl group with 1 to 5 carbon atoms and 2 to carbon atoms. 5 alkenyl or alkoxy with 1 to 4 carbon atoms)

Relative to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by the general formula (M-16) is 1%, 2%, 4%, 5%, 8%, 10%, 13 %, 15%, 18%, 20%. The preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

When the viscosity of the composition of the present invention is kept low and a composition with a fast response speed is required, it is preferable to make the above-mentioned lower limit value low and the upper limit value low. Furthermore, when a composition that hardly produces afterimages is required, it is preferable to make the above-mentioned lower limit value low and the upper limit value low. Moreover, when it is desired to increase the dielectric anisotropy in order to keep the driving voltage low, it is preferable to make the above-mentioned lower limit value high and the upper limit value high.

Further, the compound represented by the general formula (M-16) used in the composition of the present invention is specifically preferably the compound represented by the formula (M-16.1) to the formula (M-16.8), among which, the more Preferably, it contains the compound represented by formula (M-16.1) to formula (M-16.4).

Relative to the total amount of the composition of the present invention, the lower limit of the preferable content of the compound is 1%, 2%, 4%, 5%, 8%, 10%, 13%, 15%, 18%, 20%. The preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

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

(In the formula, X ^M171 ~ X ^M174 each independently represent a fluorine atom or a hydrogen atom, Y ^M171 represents a fluorine atom, a chlorine atom or -OCF ₃ , and R ^M171 represents an alkyl group with 1 to 5 carbon atoms and 2 to carbon atoms. 5 alkenyl or alkoxy with 1 to 4 carbon atoms, W ^M171 and W ^M172 each independently represent -CH ₂ -or -O-)

Relative to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by the general formula (M-17) is 1%, 2%, 4%, 5%, 8%, 10%, 13 %, 15%, 18%, 20%. The preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

When the viscosity of the composition of the present invention is kept low and a composition with a fast response speed is required, it is preferable to make the above-mentioned lower limit value low and the upper limit value low. Furthermore, when a composition that hardly produces afterimages is required, it is preferable to make the above-mentioned lower limit value low and the upper limit value low. Moreover, when it is desired to increase the dielectric anisotropy in order to keep the driving voltage low, it is preferable to make the above-mentioned lower limit value high and the upper limit value high.

Furthermore, the compound represented by the general formula (M-17) used in the composition of the present invention is specifically preferably the compound represented by the formula (M-17.1) to the formula (M-17.52), among which, the more It preferably contains compounds represented by formula (M-17.9) to formula (M-17.12), formula (M-17.21) to formula (M-17.28), and formula (M-17.45) to formula (M-17.48).

Relative to the total amount of the composition of the present invention, the lower limit of the preferable content of the compound is 1%, 2%, 4%, 5%, 8%, 10%, 13%, 15%, 18%, 20%. The preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

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

(In the formula, X ^M181 ~ X ^M186 each independently represent a fluorine atom or a hydrogen atom, Y ^M181 represents a fluorine atom, a chlorine atom or -OCF ₃ , and R ^M181 represents an alkyl group with 1 to 5 carbon atoms and 2 to carbon atoms. 5 alkenyl or alkoxy with 1 to 4 carbon atoms)

Relative to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by the general formula (M-18) is 1%, 2%, 4%, 5%, 8%, 10%, 13 %, 15%, 18%, 20%. The preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

When the viscosity of the composition of the present invention is kept low and a composition with a fast response speed is required, it is preferable to make the above-mentioned lower limit value low and the upper limit value low. Furthermore, when a composition that hardly produces afterimages is required, it is preferable to make the above-mentioned lower limit value low and the upper limit value low. Moreover, when it is desired to increase the dielectric anisotropy in order to keep the driving voltage low, it is preferable to make the above-mentioned lower limit value high and the upper limit value high.

Further, the compound represented by the general formula (M-18) used in the composition of the present invention is specifically preferably the compound represented by the formula (M-18.1) to the formula (M-18.12), among which, the more Preferably, it contains the compound represented by formula (M-18.5) to formula (M-18.8).

Relative to the total amount of the composition of the present invention, the lower limit of the preferable content of the compound is 1%, 2%, 4%, 5%, 8%, 10%, 13%, 15%, 18%, 20%. The preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

The composition of the present invention preferably contains one or more compounds represented by the general formula (K). Such compounds are equivalent to compounds with positive dielectric properties (Δε greater than 2).

(In the formula, R ^K1 represents an alkyl group with 1 to 8 carbon atoms, and one or two or more non-adjacent -CH ₂ -s in the alkyl group may be independently replaced by -CH=CH-,- C≡C-, -O-, -CO-, -COO- or -OCO- substitution; n ^K1 represents 0, 1, 2, 3, or 4; A ^K1 and A ^K2 each independently represent a choice from (a)1 , 4-cyclohexylene (in the presence of a group -CH ₂ - adjacent to the two or more of -CH ₂ - may be substituted with -O- or -S-), and (b) 1, 4-Phenylene (1 -CH= or 2 or more non-adjacent -CH= in the group can also be substituted by -N=)

In the group composed of groups, the hydrogen atoms on the above-mentioned groups (a) and (b) may be independently substituted by cyano, fluorine or chlorine atoms; Z ^K1 and Z ^K2 each independently represent a single bond, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -OCF ₂ -, -CF ₂ O-, -COO-, -OCO- or -C≡C- ; When n ^K1 is 2, 3, or 4 and there are multiple A ^K2s , they can be the same or different. When n ^K1 is 2, 3, or 4 and there are multiple Z ^K1s , they can be The same may be different; X ^K1 and X ^K3 each independently represent a hydrogen atom, a chlorine atom or a fluorine atom; X ^K2 represents a hydrogen atom, a fluorine atom, a chlorine atom, a cyano group, a trifluoromethyl group, a fluoromethoxy group, and a difluoro Methoxy, trifluoromethoxy or 2,2,2-trifluoroethyl)

In the general formula (K), R ^{K1 is} preferably an alkyl group with 1 to 8 carbon atoms, an alkoxy group with 1 to 8 carbon atoms, an alkenyl group with 2 to 8 carbon atoms, or an alkenyl group with 2 to 8 carbon atoms. The alkenyloxy group is preferably an alkyl group with 1 to 5 carbon atoms, an alkoxy group with 1 to 5 carbon atoms, an alkenyl group with 2 to 5 carbon atoms, or an alkenyloxy group with 2 to 5 carbon atoms, and more It is preferably an alkyl group with 1 to 5 carbon atoms or an alkenyl group with 2 to 5 carbon atoms, more preferably an alkyl group with 2 to 5 carbon atoms or an alkenyl group with 2 to 3 carbon atoms, particularly preferably a carbon atom Number 3 alkenyl (propenyl).

When reliability is important, R ^{K1 is} preferably an alkyl group, and when viscosity reduction is important, it is preferably an alkenyl group.

烷等飽和環結構之情形時，較佳為直鏈狀之碳原子數1~5之烷基、直鏈狀之碳原子數1~4之烷氧基及直鏈狀之碳原子數2~5之烯基。為了使向列相穩定，較佳為碳原子及存在之情形時之氧原子的合計在5以下，較佳為直鏈狀。 In addition, when the ring structure to which it is bonded is a phenyl group (aromatic), it is preferably a linear alkyl group with 1 to 5 carbon atoms, and a linear alkyl group with 1 to 4 carbon atoms. The oxy group and the alkenyl group with 4~5 carbon atoms are bonded to the ring structure of cyclohexane, pyran and two

In the case of a saturated ring structure such as an alkane, it is preferably a straight-chain alkyl group with 1 to 5 carbon atoms, a straight-chain alkoxy group with 1 to 4 carbon atoms, and a straight-chain carbon number from 2 to 5 of alkenyl. In order to stabilize the nematic phase, the total of carbon atoms and oxygen atoms when present is preferably 5 or less, and it is preferably linear.

As the alkenyl group, a group selected from the group represented by any one of the formula (R1) to the formula (R5) is preferred. (The black dots in each formula represent the carbon atoms in the ring structure to which the alkenyl group is bonded)

A ^K1 and A ^K2 are independent. When it is required to increase Δn, it is preferably aromatic. In order to improve the response speed, it is preferably aliphatic, preferably representing trans-1,4-cyclohexylene, 1,4-phenylene, 2-fluoro-1,4-phenylene, 3-fluoro-1,4-phenylene, 3,5-difluoro-1,4-phenylene, 2,3 -Difluoro-1,4-phenylene, 1,4-cyclohexenylene, 1,4-bicyclo (2.2.2) octyl, piperidine-1,4-diyl, naphthalene-2, 6-diyl, decahydronaphthalene-2,6-diyl or 1,2,3,4-tetrahydronaphthalene-2,6-diyl, more preferably represents the following structure,

It is more preferable to show the following structure.

Z ^K1 and Z ^K2 each independently represent -CH ₂ O-, -CF ₂ O-, -CH ₂ CH ₂ -, -CF ₂ CF ₂ -or a single bond, more preferably -CF ₂ O-, -CH ₂ CH ₂ -or a single bond, particularly preferably -CF ₂ O- or a single bond.

n ^{K1 is} preferably 0, 1, 2 or 3, preferably 0, 1 or 2. When the focus is on improving the situation of △ε, it is preferably 0 or 1, and when the situation of _{T NI is emphasized, it is more} Preferably, it is 1 or 2.

The types of compounds that can be combined are not particularly limited, and they can be used in combination according to the required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. Regarding the types of compounds used, for example, as an embodiment of the present invention, there are one type, two types, and three types. Furthermore, in another embodiment of this invention, there are 4 types, 5 types, 6 types, and 7 or more types.

In the composition of the present invention, the content of the compound represented by the general formula (K) must be based on solubility at low temperature, transition temperature, electrical reliability, birefringence, process suitability, dripping traces, and residual image , Dielectric anisotropy and other required performance to adjust appropriately.

Relative to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by formula (K) is 1%, 10%, 20%, 30%, 40%, 50%, 55%, 60 %, 65%, 70%, 75%, 80%. With regard to the preferred upper limit of the content, for example, in one aspect of the present invention, it is 95%, 85%, 75%, 65%, 55%, 45%, 35% relative to the total amount of the composition of the present invention. , 25%.

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

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

(In the formula, R ^K11 represents an alkyl group with 1 to 5 carbon atoms, an alkenyl group with 2 to 5 carbon atoms or an alkoxy group with 1 to 4 carbon atoms, and X ^K11 ~X ^K14 each independently represent a hydrogen atom or Fluorine atom, Y ^K11 represents fluorine atom or OCF ₃ )

The types of compounds that can be combined are not particularly limited, and they can be used in combination according to the required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. Regarding the type of compound used, for example, as an embodiment of the present invention, there are one type, two types, or three or more types.

Relative to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by formula (K-1) is 1%, 2%, 5%, 8%, 10%, 13%, 15% , 18%, 20%, 22%, 25%, 30%. The preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

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

Furthermore, the compound represented by the general formula (K-1) is specifically preferably the compound represented by the formula (K-1.1) to the formula (K-1.4), preferably the formula (K-1.1) or the formula ( The compound represented by K-1.2) is more preferably a compound represented by formula (K-1.2). Moreover, it is also preferable to use the compound represented by formula (K-1.1) or formula (K-1.2) at the same time.

Relative to the total amount of the composition of the present invention, the lower limit of the preferable content of the compound is 1%, 2%, 4%, 5%, 8%, 10%, 13%, 15%, 18%, 20%. The preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

The compound represented by general formula (K) is preferably a compound selected from the group of compounds represented by general formula (K-2), for example.

(In the formula, R ^K21 represents an alkyl group with 1 to 5 carbon atoms, an alkenyl group with 2 to 5 carbon atoms or an alkoxy group with 1 to 4 carbon atoms, and X ^K21 ~X ^K24 each independently represent a hydrogen atom or Fluorine atom, Y ^K21 represents fluorine atom or OCF ₃ )

The types of compounds that can be combined are not particularly limited, and they can be used in combination according to the required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. Regarding the type of compound used, for example, as an embodiment of the present invention, there are one type, two types, or three or more types.

Relative to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by formula (K-2) is 1%, 2%, 5%, 8%, 10%, 13%, 15% , 18%, 20%, 22%, 25%, 30%. The preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

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

Further, the compound represented by the general formula (K-2) is specifically preferably the compound represented by the formula (K-2.1) to the formula (K-2.6), preferably the formula (K-2.5) or the formula ( The compound represented by K-2.6) is more preferably a compound represented by formula (K-2.6). Moreover, it is also preferable to use the compound represented by formula (K-2.5) or formula (K-2.6) at the same time.

Relative to the total amount of the composition of the present invention, the lower limit of the preferable content of the compound is 1%, 2%, 4%, 5%, 8%, 10%, 13%, 15%, 18%, 20%. The preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

The compound represented by general formula (K) is preferably a compound selected from the group of compounds represented by general formula (K-3), for example.

(In the formula, R ^K31 represents an alkyl group with 1 to 5 carbon atoms, an alkenyl group with 2 to 5 carbon atoms or an alkoxy group with 1 to 4 carbon atoms, and X ^K31 ~X ^K36 each independently represent a hydrogen atom or Fluorine atom, Y ^K31 represents fluorine atom or OCF ₃ )

The types of compounds that can be combined are not particularly limited, and they can be used in combination according to the required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. Regarding the type of compound used, for example, as an embodiment of the present invention, there are one type, two types, or three or more types.

Relative to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by formula (K-3) is 1%, 2%, 5%, 8%, 10%, 13%, 15% , 18%, 20%, 22%, 25%, 30%. The preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

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

Furthermore, the compound represented by the general formula (K-3) is specifically preferably the compound represented by the formula (K-3.1) to the formula (K-3.4), and more preferably the formula (K-3.1) or the formula ( The compound represented by K-3.2). Moreover, it is also preferable to use the compound represented by formula (K-3.1) and formula (K-3.2) at the same time.

Relative to the total amount of the composition of the present invention, the lower limit of the preferable content of the compound is 1%, 2%, 4%, 5%, 8%, 10%, 13%, 15%, 18%, 20%. The preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

The compound represented by general formula (K) is preferably a compound selected from the group of compounds represented by general formula (K-4), for example.

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

The types of compounds that can be combined are not particularly limited, and they can be used in combination according to the required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. Regarding the type of compound used, for example, as an embodiment of the present invention, there are one type, two types, or three or more types.

Relative to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by formula (K-4) is 1%, 2%, 5%, 8%, 10%, 13%, 15% , 18%, 20%, 22%, 25%, 30%. The preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

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

Furthermore, the compound represented by the general formula (K-4) is specifically preferably the compound represented by the formula (K-4.1) to the formula (K-4.18), and more preferably the formula (K-4.1) and the formula ( K-4.2), compounds represented by formulas (K-4.11), (K-4.12). It is also preferable to use the compounds represented by formula (K-4.1), formula (K-4.2), formula (K-4.11), and (K-4.12) at the same time.

Relative to the total amount of the composition of the present invention, the lower limit of the preferable content of the compound is 1%, 2%, 4%, 5%, 8%, 10%, 13%, 15%, 18%, 20%. The preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

The compound represented by general formula (K) is preferably a compound selected from the group of compounds represented by general formula (K-5), for example.

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

The types of compounds that can be combined are not particularly limited, and they can be used in combination according to the required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. Regarding the type of compound used, for example, as an embodiment of the present invention, there are one type, two types, or three or more types.

Relative to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by formula (K-5) is 1%, 2%, 5%, 8%, 10%, 13%, 15% , 18%, 20%, 22%, 25%, 30%. The preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

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

Furthermore, the compound represented by the general formula (K-5) is specifically preferably the compound represented by the formula (K-5.1) to the formula (K-5.18), and more preferably the compound represented by the formula (K-5.11) to the formula ( The compound represented by K-5.14) is more preferably a compound represented by formula (K-5.12).

Relative to the total amount of the composition of the present invention, the lower limit of the preferable content of the compound is 1%, 2%, 4%, 5%, 8%, 10%, 13%, 15%, 18%, 20%. The preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

The compound represented by general formula (K) is preferably a compound selected from the group of compounds represented by general formula (K-6), for example.

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

The types of compounds that can be combined are not particularly limited, and they can be used in combination according to the required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. Regarding the type of compound used, for example, as an embodiment of the present invention, there are one type, two types, or three or more types.

Relative to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by formula (K-6) is 1%, 2%, 5%, 8%, 10%, 13%, 15% , 18%, 20%, 22%, 25%, 30%. The preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

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

Further, the compound represented by the general formula (K-6) is specifically preferably the compound represented by the formula (K-6.1) to the formula (K-6.18), and more preferably the formula (K-6.15) to the formula ( The compound represented by K-6.18) is more preferably a compound represented by formula (K-6.16) and formula (K-6.17). In addition, it is also preferable to use the compound represented by the formula (K-6.16) and the formula (K-6.17) at the same time.

Relative to the total amount of the composition of the present invention, the lower limit of the preferable content of the compound is 1%, 2%, 4%, 5%, 8%, 10%, 13%, 15%, 18%, 20%. The preferred upper limit value of the content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 5%.

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

(In the formula, R ^L1 and R ^L2 each independently represent an alkyl group with 1 to 8 carbon atoms, and one or two or more non-adjacent -CH ₂ -s in the alkyl group may be each independently- CH=CH-, -C≡C-, -O-, -CO-, -COO- or -OCO- substitution; n ^L1 represents 0, 1, 2 or 3; A ^L1 , A ^L2 and A ^L3 are independently selected from the group consisting represents (a) 1,4- cyclohexylene (in the presence of a group -CH ₂ - or two or more of the adjacent -CH ₂ - may be replaced by -O-), (b ) 1,4-phenylene (1 -CH= or 2 or more non-adjacent -CH= in the group can also be substituted by -N=), and (c) naphthalene-2,6 -Diyl, 1,2,3,4-tetrahydronaphthalene-2,6-diyl or decahydronaphthalene-2,6-diyl (exist in naphthalene-2,6-diyl or 1,2,3 ,4-Tetrahydronaphthalene-2,6-diyl in 1 -CH= or 2 or more non-adjacent -CH= can also be replaced by -N=)

The groups in the group consisting of the above groups (a), group (b) and group (c) can also be independently substituted by a cyano group, a fluorine atom or a chlorine atom; Z ^L1 and Z ^L2 each independently represent a single bond , -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, -OCF ₂ -, -CF ₂ O-, -CH=NN =CH-, -CH=CH-, -CF=CF- or -C≡C-; when n ^L1 is 2 or 3 and there are multiple A ^L2s , they can be the same or different, in n ^L1 When it is 2 or 3 and there are multiple Z ^L2s , they may be the same or different; however, they do not include the general formulas (N-1), (N-2), (N-3), (J) and (i) The compound represented)

The compound represented by the general formula (L) may be used alone or in combination. The types of compounds that can be combined are not particularly limited, and they can be combined appropriately according to the required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. Regarding the type of compound used, for example, as an embodiment of the present invention, there is one type. Or in another embodiment of the present invention, they are 2, 3, 4, 5, 6, 7, 8, 9, 10 or more.

In the composition of the present invention, the content of the compound represented by the general formula (L) must be based on solubility at low temperature, transition temperature, electrical reliability, birefringence, process suitability, dripping traces, and residual image , Dielectric anisotropy and other required performance to adjust appropriately.

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

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

When reliability is important, it is preferable that R ^L1 and R ^L2 are both alkyl groups. When it is important to reduce the volatility of the compound, it is preferably an alkoxy group. When it is important to reduce viscosity, Preferably, at least one of them is an alkenyl group.

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

烷等飽和環結構之情形時，較佳為直鏈狀之碳原子數1~5之烷基、直鏈狀之碳原子數1~4之烷氧基及直鏈狀之碳原子數2~5之烯基。為了使向列相穩定，較佳為碳原子及存在之情形時之氧原子的合計在5以下，較佳為直鏈狀。 Regarding R ^L1 and R ^L2 , when the ring structure to which they are bonded is a phenyl group (aromatic), it is preferably a straight-chain alkyl group with 1 to 5 carbon atoms, and a straight-chain carbon atom number The alkoxy group of 1~4 and the alkenyl group of 4~5 carbon atoms are bonded to the ring structure of cyclohexane, piperan and two

In the case of a saturated ring structure such as an alkane, it is preferably a straight-chain alkyl group with 1 to 5 carbon atoms, a straight-chain alkoxy group with 1 to 4 carbon atoms, and a straight-chain carbon number from 2 to 5 of alkenyl. In order to stabilize the nematic phase, the total of carbon atoms and oxygen atoms when present is preferably 5 or less, and it is preferably linear.

As the alkenyl group, a group selected from the group represented by any one of the formula (R1) to the formula (R5) is preferred. (The black dots in each formula indicate the carbon atoms in the ring structure)

When the ^{response speed is important, n L1} is preferably 0, in order to improve the upper limit temperature of the nematic phase, it is preferably 2 or 3, and in order to achieve a balance of these, it is preferably 1. Moreover, in order to satisfy the characteristics required as a composition, it is preferable to combine compounds of different values.

Regarding A ^L1 , A ^L2 and A ^L3 , when it is required to increase Δn, it is preferably aromatic. In order to improve the response speed, it is preferably aliphatic, and it is preferable to independently represent trans-1,4. -Cyclohexylene, 1,4-phenylene, 2-fluoro-1,4-phenylene, 3-fluoro-1,4-phenylene, 3,5-difluoro-1,4-phenylene Base, 1,4-cyclohexenyl, 1,4-bicyclo[2.2.2] octyl, piperidine-1,4-diyl, naphthalene-2,6-diyl, decalin-2 ,6-diyl or 1,2,3,4-tetrahydronaphthalene-2,6-diyl, more preferably represents the following structure,

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

Z ^L1 and Z ^L2 are preferably single keys when the response speed is important.

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

The compound represented by general formula (L) is preferably a compound selected from the group of compounds represented by general formulas (L-1) to (L-8).

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

(In the formula, R ^L11 and R ^L12 independently represent the same meaning as ^{R L1} and R ^L2 in the general formula (L))

R ^L11 and R ^{L12 are} preferably linear alkyl groups with 1 to 5 carbon atoms, linear alkoxy groups with 1 to 4 carbon atoms, and linear alkenyl groups with 2 to 5 carbon atoms. .

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

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

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

Preferably, R ^L11 and R ^L12 are each independently an alkyl group having 1 to 3 carbon atoms and an alkenyl group having 2 or 3 carbon atoms. The lower limit of the preferable content of the compound is 1%, 2%, 3%, 5%, 7%, 10%, 15%, 20%, 25% relative to the total amount of the composition of the present invention , 30%, 35%, 40%, 45%, 50%, 55%. The preferred upper limit of the content is 95%, 90%, 85%, 80%, 75%, 70%, 65%, 60%, 55%, 50%, relative to the total amount of the composition of the present invention. 45%, 40%, 35%, 30%, 25%.

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

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

(In the formula, R ^L12 means the same meaning as in the general formula (L-1))

The compound represented by general formula (L-1-1) is preferably a compound selected from the group of compounds represented by formula (L-1-1.1) to formula (L-1-1.3), preferably formula (L The compound represented by -1-1.2) or formula (L-1-1.3) is particularly preferably the compound represented by formula (L-1-1.3).

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

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

(In the formula, R ^L12 represents the same meaning as in the general formula (L-1))

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

Furthermore, the compound represented by the general formula (L-1-2) is preferably a compound selected from the group of compounds represented by the formula (L-1-2.1) to the formula (L-1-2.4), preferably (L-1-2.2) to the compound represented by formula (L-1-2.4). In particular, in order to improve the response speed of the composition of the present invention, the compound represented by the formula (L-1-2.2) is particularly preferred. _{In addition, when a higher T NI} is required 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). In order to make the solubility at low temperature good, it is not preferable to set the content of the compound represented by formula (L-1-2.3) and formula (L-1-2.4) to 30% or more.

Relative to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by formula (L-1-2.2) 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%, 35%, 32%, 30%, 27% relative to the total amount of the composition of the present invention. %, 25%, 22%.

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

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

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

R ^L13 and R ^{L14 are} preferably linear alkyl groups with 1 to 5 carbon atoms, linear alkoxy groups with 1 to 4 carbon atoms, and linear alkenyl groups with 2 to 5 carbon atoms. .

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

Furthermore, the compound represented by the general formula (L-1-3) is preferably a compound selected from the group of compounds represented by the formula (L-1-3.1) to the formula (L-1-3.12), preferably (L-1-3.1), a compound represented by formula (L-1-3.3) or formula (L-1-3.4). In particular, in order to improve the response speed of the composition of the present invention, the compound represented by the formula (L-1-3.1) is particularly preferred. _{Moreover, when a higher T NI} is required than the response speed, it is better to use the formula (L-1-3.3), formula (L-1-3.4), formula (L-1-3.11) and formula (L -1-3.12) The compound represented. In order to make the solubility at low temperature good, the total of the compounds represented by formula (L-1-3.3), formula (L-1-3.4), formula (L-1-3.11) and formula (L-1-3.12) It is not preferable to set the content to 20% or more.

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

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

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

R ^L15 and R ^{L16 are} preferably linear alkyl groups with 1 to 5 carbon atoms, linear alkoxy groups with 1 to 4 carbon atoms, and linear alkenyl groups with 2 to 5 carbon atoms. .

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

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

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

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

Preferably, the combination is selected from formula (L-1-1.3), formula (L-1-2.2), formula (L-1-3.1), formula (L-1-3.3), formula (L-1-3.4) , Two or more of the compounds represented by formula (L-1-3.11) and formula (L-1-3.12), preferably a combination selected from formula (L-1-1.3), formula (L-1 -2.2), formula (L-1-3.1), formula (L-1-3.3), formula (L-1-3.4) and formula (L-1-4.2) among the compounds represented by two or more compounds , The preferred lower limit of the total content of the compounds is 1%, 2%, 3%, 5%, 7%, 10%, 13%, relative to the total amount of the composition of the present invention. 15%, 18%, 20%, 23%, 25%, 27%, 30%, 33%, 35%, the upper limit value is 80%, 70%, 60% relative to the total amount of the composition of the present invention %, 50%, 45%, 40%, 37%, 35%, 33%, 30%, 28%, 25%, 23%, 20%. When the reliability of the composition is important, the formula is preferably a combination of 2 selected from the compounds represented by (L-1-3.1), formula (L-1-3.3) and formula (L-1-3.4) For more than one compound, when the response speed of the composition is important, it is preferable to combine two or more compounds selected from the compounds represented by formula (L-1-1.3) and formula (L-1-2.2) .

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

(In the formula, R ^L17 and R ^L18 each independently represent a methyl group or a hydrogen atom)

Relative to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by formula (L-1-6) is 1%, 5%, 10%, 15%, 17%, 20%, 23%, 25%, 27%, 30%, 35%. The preferred upper limit of the content is 60%, 55%, 50%, 45%, 42%, 40%, 38%, 35%, 33%, 30% relative to the total amount of the composition of the present invention.

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

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

(In the formula, R ^L21 and R ^L22 independently represent the same meaning as ^{R L1} and R ^L2 in the general formula (L))

R ^{L21 is} preferably an alkyl group with 1 to 5 carbon atoms or an alkenyl group with 2 to 5 carbon atoms, and R ^{L22 is} preferably an alkyl group with 1 to 5 carbon atoms, an alkenyl group with 4 to 5 carbon atoms or Alkoxy with 1 to 4 carbon atoms.

The compound represented by the general formula (L-1) may be used alone or in combination of two or more compounds. The types of compounds that can be combined are not particularly limited, and they can be combined appropriately according to the required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. Regarding the kinds of compounds used, for example, as an embodiment of the present invention, there are 1, 2, 3, 4, 5 or more kinds.

In the case where the solubility at low temperature is important, the effect is high if the content is set to be large, and on the contrary, when the content is set to be small in the case where the response speed is important, the effect is high. Furthermore, when improving the dripping trace or the afterimage characteristics, it is preferable to set the range of the content to the middle.

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

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

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

(In the formula, R ^L31 and R ^L32 independently represent the same meaning as ^{R L1} and R ^L2 in the general formula (L))

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

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

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

In the case of obtaining high birefringence, if the content is set to be large, the effect is high. Conversely, in _{the case where high T NI} is emphasized, if the content is set to be small, the effect is high. Furthermore, when improving the dripping trace or the afterimage characteristics, it is preferable to set the range of the content to the middle.

Further, the compound represented by the general formula (L-3) is preferably a compound selected from the group of compounds represented by the formula (L-3.1) to the formula (L-3.4), and is preferably a compound represented by the formula (L-3.2) to The compound represented by formula (L-3.7).

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

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

R ^{L41 is} preferably an alkyl group with 1 to 5 carbon atoms or an alkenyl group with 2 to 5 carbon atoms, and R ^{L42 is} preferably an alkyl group with 1 to 5 carbon atoms, an alkenyl group with 4 to 5 carbon atoms or Alkoxy with 1 to 4 carbon atoms)

The compound represented by the general formula (L-4) may be used alone or in combination of two or more compounds. The types of compounds that can be combined are not particularly limited, and they can be combined appropriately according to the required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. Regarding the type of compound used, for example, as an embodiment of the present invention, there are one, two, three, four, or five or more types.

In the composition of the present invention, the content of the compound represented by the general formula (L-4) must be based on solubility at low temperature, transition temperature, electrical reliability, birefringence, process suitability, dropping traces, The required performance such as residual image and dielectric anisotropy can be adjusted appropriately.

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

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

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

In the case of containing both the compound represented by formula (L-4.1) and the compound represented by formula (L-4.2), the lower limit of the preferable content of the two compounds relative to the total amount of the composition of the present invention The value is 15%, 19%, 24%, 30%, and the preferred upper limit is 45%, 40%, 35%, 30%, 25%, 23%, 20%, 18%, 15%, 13%.

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

According to the required properties such as solubility at low temperature, transition temperature, electrical reliability, birefringence, etc., it may also contain the compound represented by formula (L-4.4), or the compound represented by formula (L-4.5) The compound may also contain both the compound represented by formula (L-4.4) and the compound represented by formula (L-4.5).

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

In the case of containing both the compound represented by formula (L-4.4) and the compound represented by formula (L-4.5), the lower limit of the preferable content of the two compounds relative to the total amount of the composition of the present invention The value is 15%, 19%, 24%, 30%, and the preferred upper limit is 45%, 40%, 35%, 30%, 25%, 23%, 20%, 18%, 15%, 13%.

The compound represented by general formula (L-4) is preferably a compound represented by formula (L-4.7) to formula (L-4.10), and particularly preferably a compound represented by formula (L-4.9).

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

(In the formula, R ^L51 and R ^L52 independently represent the same meaning as ^{R L1} and R ^L2 in the general formula (L))

R ^{L51 is} preferably an alkyl group with 1 to 5 carbon atoms or an alkenyl group with 2 to 5 carbon atoms, and R ^{L52 is} preferably an alkyl group with 1 to 5 carbon atoms, an alkenyl group with 4 to 5 carbon atoms or Alkoxy with 1 to 4 carbon atoms.

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

In the composition of the present invention, the content of the compound represented by the general formula (L-5) must be based on solubility at low temperature, transition temperature, electrical reliability, birefringence, process suitability, dripping traces, The required performance such as residual image and dielectric anisotropy can be adjusted appropriately.

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

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

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

The compound represented by general formula (L-5) is preferably a compound represented by formula (L-5.3) or formula (L-5.4).

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

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

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

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

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

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

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

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

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

There are no particular restrictions on the types of compounds that can be combined, and it is preferable to include one to three types from these compounds, and more preferably one to four types. In addition, the selected compound has a wide molecular weight distribution and is also effective for solubility. Therefore, for example, selecting one of the compounds represented by formula (L-6.1) or (L-6.2), selecting formula ( L-6.4) or one of the compounds represented by (L-6.5), select one of the compounds represented by formula (L-6.6) or formula (L-6.7), select one of the compounds represented by formula (L-6.8) One of the compounds represented by) or (L-6.9) is preferably combined appropriately. Among them, it is preferable to contain compounds represented by formula (L-6.1), formula (L-6.3), formula (L-6.4), formula (L-6.6), and formula (L-6.9).

Furthermore, the compound represented by the general formula (L-6) is preferably, for example, the compound represented by the formula (L-6.10) to the formula (L-6.17), and among them, the compound represented by the formula (L-6.11) is preferable .

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

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

(In the formula, R ^L71 and R ^L72 independently represent the same meaning as ^{R L1} and R ^L2 in general formula (L), ^{and A L71} and A ^{L72 independently represent the same meaning as A L2} and A in general formula (L). ^{L3 has the} same meaning, but ^{the hydrogen atoms on A L71} and A ^L72 can also be independently replaced by fluorine atoms. Z ^L71 has the same meaning as ^{Z L2} in the general formula (L), ^{and X L71} and X ^L72 each independently represent Fluorine atom or hydrogen atom)

In the formula, R ^L71 and R ^{L72 are} preferably each independently an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, A ^L71 and A ^{L72 is} preferably independently 1,4-cyclohexylene or 1,4-phenylene ^{. The hydrogen atoms on A L71} and A ^L72 may be independently substituted by fluorine atoms. Z ^{L71 is} preferably a single bond. Or COO-, preferably a single bond, and X ^L71 and X ^{L72 are} preferably hydrogen atoms.

The types of compounds that can be combined are not particularly limited, and they can be combined according to required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. Regarding the types of compounds used, for example, as an embodiment of the present invention, there are one type, two types, three types, and four types.

In the composition of the present invention, the content of the compound represented by the general formula (L-7) must be based on solubility at low temperature, transition temperature, electrical reliability, birefringence, process suitability, dripping traces, The required performance such as residual image and dielectric anisotropy can be adjusted appropriately.

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

When the composition of the present invention has a high T _NI embodiment, it is preferable to increase the content of the compound represented by formula (L-7), and when the low viscosity embodiment is more ideal, It is better to make the content smaller.

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

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

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

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

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

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

The compound represented by general formula (L-8) is the following compound.

(Wherein, R ^L81 and R ^L82 each independently represents general formula (R) in the same meaning of L ^L1 and R ^L2, A ^L81 represents the general formula (L) is of the same meaning as A ^L1, or a single bond, A ^L81 The above hydrogen atoms can also be independently replaced by fluorine atoms, X ^L81 ~ X ^L86 each independently represent a fluorine atom or a hydrogen atom)

Wherein, R ^L81 and R ^L82 are each independently preferably carbon atoms of an alkyl group having 1 to 5 carbon atoms or an alkenyl group of 2 to 5 carbon atoms, an alkoxy group of 1 to 4, A ^L81 preferred It is 1,4-cyclohexylene or 1,4-phenylene ^{. The hydrogen atoms on A L71} and A ^L72 can also be independently replaced by fluorine atoms. In the same ring structure in the general formula (L-8), The number of fluorine atoms is preferably 0 or 1, and the number of fluorine atoms in the molecule is preferably 0 or 1.

The types of compounds that can be combined are not particularly limited, and they can be combined according to required properties such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. Regarding the types of compounds used, for example, as an embodiment of the present invention, there are one type, two types, three types, and four types.

In the composition of the present invention, the content of the compound represented by the general formula (L-8) must be based on solubility at low temperature, transition temperature, electrical reliability, birefringence, process suitability, dripping traces, The required performance such as residual image and dielectric anisotropy can be adjusted appropriately.

Relative to the total amount of the composition of the present invention, the lower limit of the preferred content of the compound represented by formula (L-8) is 1%, 2%, 3%, 5%, 7%, 10%, 14% , 16%, 20%. Relative to the total amount of the composition of the present invention, the upper limit of the preferred content of the compound represented by formula (L-8) is 30%, 25%, 23%, 20%, 18%, 15%, 10% , 5%.

When the composition of the present invention _{is ideal for a high T NI} embodiment, it is better to make the content of the compound represented by formula (L-8) larger, and when a low viscosity embodiment is more ideal, It is better to make the content less.

Further, the compound represented by the general formula (L-8) is preferably the compound represented by the formula (L-8.1) to the formula (L-8.4), more preferably the formula (L-8.3) and the formula (L-8.5) , Compounds represented by formula (L-8.6), formula (L-8.13), formula (L-8.16) to formula (L-8.18), and formula (L-8.23) to formula (L-8.28).

Compared with the total amount of the composition of the present invention, the total of the compounds represented by the general formulas (i), (L), (N-1), (N-2), (N-3) and (J) The lower limit of the optimum content is 80%, 85%, 88%, 90%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, 99%, 100%. The upper limit of the preferred content is 100%, 99%, 98%, 95%. Among them, from the viewpoint of obtaining a composition having a large absolute value of Δε, it is preferably one of the compounds represented by the general formula (N-1), (N-2), (N-3) or (J) Any one is 5% or less, preferably 3% or less, and more preferably 0%.

Compared with the total amount of the composition of the present invention, the total of the compounds represented by general formulas (i), (L-1)~(L-8), and general formulas (M-1)~(M-18) The lower limit of the optimum content is 80%, 85%, 88%, 90%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, 99%, 100%. The upper limit of the preferred content is 100%, 99%, 98%, 95%.

Compared with the total amount of the composition of the present invention, the total of the compounds represented by general formulas (i), (L-1)~(L-8), and general formulas (N-1a)~(N-1g) The lower limit of the optimum content is 80%, 85%, 88%, 90%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, 99%, 100%. The upper limit of the preferred content is 100%, 99%, 98%, 95%.

Relative to the total amount of the composition of the present invention, compounds represented by general formulas (i), (L-1)~(L-8), and general formulas (N-1-1)~(N-1-21) The lower limit of the total preferable content is 80%, 85%, 88%, 90%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, 99%, 100%. The upper limit of the preferred content is 100%, 99%, 98%, 95%.

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

When attaching importance to the reliability and long-term stability of the composition, relative to the total mass of the composition, the content of the compound having a carbonyl group is preferably set to 5% or less, more preferably 3% or less, and even more preferably It is set to 1% or less, and it is best not to contain it substantially.

When attaching importance to the stability of UV irradiation, relative to the total mass of the above composition, the content of the compound substituted with chlorine atoms is preferably 15% or less, more preferably 10% or less, and more preferably 8 % Or less, more preferably 5% or less, more preferably 3% or less, and still more preferably substantially no content.

When attaching importance to the stability of UV irradiation, relative to the total mass of the above composition, the content of the cyano-substituted compound is preferably set to 15% or less, more preferably 10% or less, and more preferably 8 % Or less, more preferably 5% or less, more preferably 3% or less, and still more preferably substantially no content.

It is preferable to increase the content of compounds in which all the ring structures in the molecule are 6-membered rings. Relative to the total mass of the above composition, it is preferable to set the content of compounds in which all the ring structures in the molecule are all 6-membered rings to be 80% or more , More preferably 90% or more, still more preferably 95% or more, and most preferably only a compound in which all the intramolecular ring structures are 6-membered rings are used to constitute the composition.

In order to suppress the deterioration of the composition due to oxidation, it is preferable to reduce the content of the compound having a cyclohexenylene group as a ring structure, and relative to the total mass of the above composition, it is preferable to reduce the content of the compound having a cyclohexenylene group It is set to 10% or less, preferably 8% or less, more preferably 5% or less, preferably 3% or less, and still more preferably not substantially contained.

When focusing on improving the viscosity and improving the T _NI , it is better to reduce the content of the following compounds, namely: 2-methylbenzene-1,4-bis which has hydrogen atoms in the molecule and can be substituted into halogens Based on the total mass of the above composition, it is preferable to set the content of the compound having a 2-toluene-1,4-diyl group in the molecule to 10% or less, preferably 8% or less, more preferably 5% or less, preferably 3% or less, and still more preferably substantially no content.

In this case, the term "substantially not contained" means that it does not contain anything other than what is not intentionally contained.

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

_{The average elastic constant (K AVG} ) of the liquid crystal composition used in the present invention is preferably 10 to 25, and as its lower limit, it is preferably 10, preferably 10.5, preferably 11, and preferably 11.5, which is more Preferably it is 12, preferably 12.3, preferably 12.5, preferably 12.8, preferably 13, preferably 13.3, preferably 13.5, preferably 13.8, preferably 14, preferably 14.3, more Preferably it is 14.5, preferably 14.8, preferably 15, preferably 15.3, preferably 15.5, preferably 15.8, preferably 16, preferably 16.3, preferably 16.5, preferably 16.8, more Preferably it is 17, preferably 17.3, preferably 17.5, preferably 17.8, preferably 18, and as the upper limit thereof, it is preferably 25, preferably 24.5, preferably 24, preferably 23.5, Preferably it is 23, preferably 22.8, preferably 22.5, preferably 22.3, preferably 22, preferably 21.8, preferably 21.5, preferably 21.3, preferably 21, preferably 20.8, Preferably it is 20.5, preferably 20.3, preferably 20, preferably 19.8, preferably 19.5, preferably 19.3, preferably 19, preferably 18.8, preferably 18.5, preferably 18.3, Preferably it is 18, preferably 17.8, preferably 17.5, preferably 17.3, preferably 17. When emphasis is placed on reducing power consumption, it is more effective to suppress the amount of light from the backlight. The liquid crystal display element is preferably to increase the transmittance of light. For this reason, it is better to set _{the value of K AVG} to a lower value. When focusing on improving the response speed. It is preferable to set the value of _{K AVG to be higher.}

In order to produce liquid crystal display elements such as PS mode, lateral electric field type PSA mode, or lateral electric field type PSVA mode, the composition of the present invention may contain a polymerizable compound. Examples of polymerizable compounds that can be used include photopolymerizable monomers polymerized by energy rays such as light. Examples of the structure include biphenyl derivatives, terphenyl derivatives, etc. The polymerizable compound of the liquid crystal skeleton of the member ring, etc. More specifically, it is preferably a bifunctional monomer represented by the general formula (XX),

(In the formula, X ²⁰¹ and X ²⁰² each independently represent a hydrogen atom or a methyl group; Sp ²⁰¹ and Sp ²⁰² preferably each independently represent a single bond, an alkylene having 1 to 8 carbon atoms, or -O-(CH ₂ ) _s- (where s represents an integer from 2 to 7, and the oxygen atom is bonded to the aromatic ring); Z ²⁰¹ represents -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 single bond; M ²⁰¹ represents 1,4-phenylene, trans-1,4-cyclohexylene or single bond, any hydrogen atom of 1,4-phenylene in the formula can also be fluorine atom replace).

X ²⁰¹ and X ^{202 both} represent a diacrylate derivative of a hydrogen atom, X ²⁰¹ and X ^{202 both} represent a dimethacrylate derivative of a methyl group, ^{and one of X 201} and X ²⁰² represents hydrogen. A compound in which the atom and the other represents a methyl group is also preferable. Regarding the polymerization rate of these compounds, the diacrylate derivative is the fastest, the dimethacrylate derivative is the slower, and the asymmetric compound is in the middle. The preferred aspect can be used according to its use. Among PSA display elements, dimethacrylate derivatives are particularly preferred.

Sp ²⁰¹ and Sp ²⁰² each independently represent a single bond, an alkylene group with 1 to 8 carbon atoms, or -O-(CH ₂ ) _s -. In PSA display devices, at least one of them is preferably a single bond, preferably It is a compound that both represents a single bond, or one is a single bond and the other represents an alkylene group with 1 to 8 carbon atoms or O-(CH ₂ ) _s -. In this case, it is preferably an alkyl group of 1 to 4, and s is preferably 1 to 4.

Z ^{201 is} preferably -OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, -CF ₂ O-, -OCF ₂ -, -CH ₂ CH ₂ -, -CF ₂ CF ₂ -or single The bond is more preferably -COO-, -OCO- or a single bond, particularly preferably a single bond.

M ²⁰¹ represents a 1,4-phenylene group, trans-1,4-cyclohexylene group or a single bond in which any hydrogen atom may be substituted by a fluorine atom, preferably 1,4-phenylene group or a single bond. When C represents a ring structure other than a single bond, Z ^{201 is} also preferably a linking group other than a single bond. When M ²⁰¹ is a single bond, Z ^{201 is} preferably a single bond.

From these aspects, in the general formula (XX), ^{the ring structure between Sp 201} and Sp ²⁰² is specifically preferably the structure described below.

In the general formula (XX), when M ²⁰¹ represents a single bond and the ring structure is formed by two rings, it preferably represents the following formulas (XXa-1) to (XXa-5), more preferably (XXa-1) to formula (XXa-3), particularly preferably represented by formula (XXa-1).

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

The polymerizable compound containing these skeletons has the most suitable alignment control force after polymerization for PSA-type liquid crystal display elements, and a good alignment state can be obtained, so display unevenness will be suppressed or will not occur at all.

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

(In the formula, benzene can also be substituted by fluorine atoms, Sp ²⁰ represents an alkylene group with 2 to 5 carbon atoms)

When a monomer is added to the composition of the present invention, even if there is no polymerization initiator, the polymerization will proceed. However, in order to promote the polymerization, the polymerization initiator may be contained. Examples of polymerization initiators include benzoin ethers, benzophenones, acetophenones, benzil ketal, and acyl phosphine oxides. Wait.

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

(In the formula, R ^Q represents a linear or branched alkyl group with 1 to 22 carbon atoms. One or more CH ₂ groups in the alkyl group may be blocked by the oxygen atoms not directly adjacent to each other. -O-,-CH=CH-, -CO-, -OCO-, -COO-, -C≡C-, -CF ₂ O-, -OCF ₂ -replacement, M ^Q represents trans-1,4- (Cyclohexylene, 1,4-phenylene or single bond)

R ^Q represents a linear or branched alkyl group having 1 to 22 carbon atoms. One or more CH ₂ groups in the alkyl group may be -O-, -CH=CH-, -CO-, -OCO-, -COO-, -C≡C-, -CF ₂ O-, -OCF ₂ -Substituted, preferably linear alkyl with 1 to 10 carbon atoms , Straight-chain alkoxy group, 1 CH ₂ group is substituted into -OCO- or COO- Straight-chain alkyl group, branched chain alkyl group, branched alkoxy group, 1 CH ₂ group is substituted into -OCO -Or COO- branched chain alkyl group, more preferably a straight chain alkyl group with 1 to 20 carbon atoms, one CH ₂ group substituted with -OCO- or COO-, a straight chain alkyl group or a branched chain alkyl group , Branched alkoxy, one CH ₂ group is substituted with -OCO- or COO- branched alkyl. M ^Q represents trans-1,4-cyclohexylene, 1,4-phenylene or a single bond, preferably trans-1,4-cyclohexylene or 1,4-phenylene.

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

In the formula, R ^{Q1 is} preferably a linear or branched alkyl group with 1 to 10 carbon atoms, R ^{Q2 is} preferably a linear or branched alkyl group with 1 to 20 carbon atoms, and R ^Q3 is more Preferably, it is a linear alkyl group with 1 to 8 carbon atoms, a branched chain alkyl group, a linear alkoxy group or a branched alkoxy group, and L ^{Q is} preferably a linear alkyl group with 1 to 8 carbon atoms or a branched chain. Alkylene. Among the compounds represented by general formula (Qa) to general formula (Qd), compounds represented by general formula (Qc) and general formula (Qd) are more preferred.

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

In addition, as the antioxidant or light stabilizer that can be used in the present invention, more specifically, the compounds represented by the following (III-1) to (III-38) are preferred.

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

The composition of the present invention preferably contains one or more compounds represented by the general formula (Q) or compounds selected from the general formulas (III-1) to (III-38), more preferably It contains 1 to 5 types, and the content is preferably 0.001 to 1%, more preferably 0.001 to 0.1%, particularly preferably 0.001 to 0.05%.

The polymerizable compound-containing composition of the present invention is polymerized by irradiating ultraviolet rays, thereby imparting liquid crystal alignment ability, and is used in a liquid crystal display that uses the birefringence of the composition to control the amount of light transmission element.

When the liquid crystal composition of the present invention contains a polymerizable compound, as a method of polymerizing the polymerizable compound, in order to obtain good alignment properties of the liquid crystal, it is desirable to have an appropriate polymerization rate. Therefore, it is preferably used alone, in combination, or A method of polymerization by sequentially irradiating active energy rays such as ultraviolet rays or electron beams. When using ultraviolet light, a polarized light source can be used, or a non-polarized light source can also be used. In addition, when the polymerizable compound-containing composition is sandwiched between two substrates to perform polymerization, it is necessary to impart appropriate transparency to active energy rays to at least the substrate on the irradiated surface side. In addition, the following method can also be used: after only a specific part is polymerized due to the use of a mask during light irradiation, the electric field, magnetic field, or temperature and other conditions are changed to change the alignment state of the unpolymerized part to further irradiate the activity. Energy lines make it converge. In particular, when performing ultraviolet exposure, it is preferable to perform ultraviolet exposure while applying an AC electric field to the polymerizable compound-containing composition. The applied AC electric field is preferably an AC with a frequency of 10 Hz to 10 kHz, and more preferably a frequency of 60 Hz to 10 kHz. The voltage can be selected according to the desired pretilt angle of the liquid crystal display element. That is, the pretilt angle of the liquid crystal display element can be controlled by the applied voltage. In the liquid crystal display element of the lateral electric field type MVA mode, from the viewpoint of alignment stability and contrast, it is preferable to control the pretilt angle to 80 degrees to 89.9 degrees.

The temperature during irradiation is preferably within a temperature range that can maintain the liquid crystal state of the composition of the present invention. It is preferable to carry out the polymerization at a temperature close to room temperature, that is, a temperature of typically 15 to 35°C. As a lamp that generates ultraviolet rays, metal halide lamps, high pressure mercury lamps, ultra-high pressure mercury lamps, etc. can be used. In addition, as the wavelength of the ultraviolet rays to be irradiated, it is preferable to irradiate ultraviolet rays in a wavelength region that is not the absorption wavelength region of the composition, and it is preferable to cut off the ultraviolet rays as necessary for use. The intensity of the irradiated ultraviolet rays is preferably 0.1 mW/cm ² to 100 W/cm ² , more preferably 2 mW/cm ² to 50 W/cm ² . The energy of the irradiated ultraviolet rays can be adjusted appropriately, preferably 10 mJ/cm ² to 500 J/cm ² , more preferably 100 mJ/cm ² to 200 J/cm ² . When irradiating ultraviolet light, the intensity can also be changed. The time for irradiating ultraviolet rays is appropriately selected according to the intensity of the irradiated ultraviolet rays, preferably 10 seconds to 3600 seconds, more preferably 10 seconds to 600 seconds.

As a method of polymerizing a polymerizable compound, in order to obtain a good alignment performance of the liquid crystal, a proper polymerization rate is more desirable. Therefore, it is better to perform polymerization by irradiating active energy rays such as ultraviolet rays or electron beams alone, in combination, or sequentially.的方法。 The method. When using ultraviolet light, either a polarized light source or a non-polarized light source can be used. In addition, when polymerization is carried out in a state where a polymerizable compound-containing composition is sandwiched between two substrates, it is necessary to impart appropriate transparency to active energy rays to the substrate on at least the irradiation side. In addition, the following method can also be used: after only a specific part is polymerized due to the use of a mask during light irradiation, the electric field, magnetic field, or temperature and other conditions are changed to change the alignment state of the unpolymerized part to further irradiate the activity. Energy lines make it converge. Especially when performing ultraviolet exposure, it is preferable to perform ultraviolet exposure while applying an AC electric field to the composition containing the polymerizable compound. The applied AC electric field is preferably an AC with a frequency of 10 Hz to 10 kHz, more preferably a frequency of 60 Hz to 10 kHz, and the voltage can be selected according to the desired pretilt angle of the liquid crystal display element. That is, the pretilt angle of the liquid crystal display element can be controlled by the applied voltage. In the liquid crystal display element of the lateral electric field type MVA mode, from the viewpoint of alignment stability and contrast, it is preferable to control the pretilt angle to 80 degrees to 89.9 degrees.

The temperature during irradiation is preferably within a temperature range that can maintain the liquid crystal state of the composition of the present invention. It is preferable to carry out the polymerization at a temperature close to room temperature, that is, a temperature of typically 15 to 35°C. As a lamp that generates ultraviolet rays, metal halide lamps, high-pressure mercury lamps, ultra-high-pressure mercury lamps, etc. can be used. In addition, as the wavelength of the ultraviolet rays to be irradiated, it is preferable to irradiate ultraviolet rays in a wavelength range that is not the absorption wavelength range of the composition, and it is preferable to filter out ultraviolet rays as necessary for use. The intensity of the irradiated ultraviolet rays is preferably 0.1mW/cm ² ~100W/cm ² , more preferably 2mW/cm ² ~50W/cm ² . The energy of the irradiated ultraviolet rays can be adjusted appropriately, preferably 10 mJ/cm ² to 500 J/cm ² , more preferably 100 mJ/cm ² to 200 J/cm ² . When irradiating ultraviolet rays, the intensity can also be changed. The time for irradiating ultraviolet rays is appropriately selected according to the intensity of the irradiated ultraviolet rays, preferably 10 seconds to 3600 seconds, more preferably 10 seconds to 600 seconds.

[Example]

In the examples, the following abbreviations are used for the description of the compounds. Furthermore, n represents a natural number.

(Side chain)

-n -C _n H _2n+1 linear alkyl with carbon number n

n- C _n H _2n+1 -a linear alkyl group with n carbon atoms

-On -OC _n H _{2n+1 A} linear alkoxy group with n carbon atoms

nO- C _n H _2n+1 O- Straight-chain alkoxy with n carbon atoms

-V -CH=CH ₂

V- CH ₂ =CH-

-V1 -CH=CH-CH ₃

1V- CH ₃ -CH=CH-

-2V -CH ₂ -CH ₂ -CH=CH ₃

V2- CH ₂ =CH-CH ₂ -CH _2-

-2V1 -CH ₂ -CH ₂ -CH=CH-CH ₃

1V2- CH ₃ -CH=CH-CH ₂ -CH ₂

(Link base)

-n- -C _n H _2n-

-nO- -C _n H _2n -O-

-On- -OC _n H _2n-

-COO- -C(=O)-O-

-OCO- -O-C(=O)-

-CF2O- -CF ₂ -O-

-OCF2- -O-CF _2-

(Ring structure)

In the examples, the following abbreviations are used for the description of the compounds.

(Ring structure)

(Side chain structure and link structure)

The characteristics measured in the examples are as follows.

T _NI : isotropic liquid phase transition temperature (℃)

△n: Refractive index anisotropy at 20℃

△ε: Dielectric anisotropy at 20℃

η: Viscosity at 20℃ (mPa‧s)

γ ₁ : Rotational viscosity at 20℃ (mPa‧s)

K ₁₁ : Elastic constant K ₁₁ (pN) at 20℃

K ₃₃ : Elastic constant K ₃₃ (pN) at 20℃

K _AVG ：The average value of _{K 11} and K _{33 (K AVG} =(K ₁₁ +K ₃₃ )/2)(pN)

Evaluation of driving voltage: The driving voltage (V) of the IPS type liquid crystal display element at 20°C was measured using the electro-optical measuring device DMS703 manufactured by Autronic. Evaluate the obtained values as described below.

◎: Less than 8.5

○: 8.5 or more and less than 10

△: 10 or more and less than 11.5

×: 13.0 or more

Response speed evaluation: The response speed of the IPS-type liquid crystal display element at 20°C was measured using the electro-optical measuring device DMS703 manufactured by Autronic. Evaluate the obtained values as described below.

◎: Less than 9.0ms

○: Above 9.0 and less than 10ms

△: more than 10 and less than 11.0ms

×: 11.0ms or more

Transmittance evaluation: The electro-optical characteristics of the IPS-type liquid crystal display element were measured using the electro-optical measuring device DMS703 manufactured by Autronic, and the maximum brightness was evaluated as the transmittance.

Contrast evaluation: Use the electro-optical measuring device DMS703 manufactured by Autronic to measure the electro-optical characteristics of the IPS liquid crystal display element, and calculate the "maximum brightness/minimum brightness" as the parameter of contrast. The values of the obtained parameters are evaluated in four stages as described below.

◎: Above 1600

○: Above 1400 and less than 1600

△: Above 1200 and less than 1400

×: less than 1200

Vth: A voltage at which liquid crystal is sealed in a TN cell with a thickness of 6 microns, and the transmittance is changed by 10% under a 298K, cross nicol polarizer.

VHR: Voltage retention rate at 333K (%) at a frequency of 60Hz and an applied voltage of 5V

VHR after heat resistance test: The TEG (test element group) for evaluating the electro-optical characteristics of the enclosed composition sample is kept in a thermostat at 130°C for 1 hour, and then measured under the same conditions as the above-mentioned VHR measurement method.

Afterimage: The afterimage evaluation of the liquid crystal display element is to display a specific fixed pattern in the display area for an arbitrary test time, and then perform a uniform display on the whole screen, and measure the afterimage of the fixed pattern at this time before the afterimage level of the fixed pattern reaches an unacceptable degree of afterimage The test time.

1) The so-called test time mentioned here means the display time of the fixed pattern. The longer the time, the more the afterimage can be suppressed and the higher the performance.

2) The so-called "unacceptable afterimage level" refers to the degree of observation of "unqualified afterimage in the judgment of whether the shipment is qualified or not".

Sample A: 1000 hours

Sample B: 500 hours

Sample C: 200 hours

Sample D: 100 hours

The performance is A>B>C>D.

Dropping traces: The evaluation of the dripping traces of the liquid crystal display device is to visually observe the whitening dripping traces when displaying on a completely black screen. The evaluation is carried out in the following 5 stages.

5: No trace of dripping (excellent)

4: Even if there are very few dripping traces, it is tolerable (good)

3: There are a few traces of dripping, which is at the critical level of passing or failing judgment (if possible)

2: There are traces of dripping and it is not tolerable (not allowed)

1: There are traces of dripping and is quite bad (poor)

Process suitability: The process suitability is in the ODF process, using a constant volume metering pump to add liquid crystals at 50pL each time "0~100 times, 101~200 times, 201~300 times, ‧‧‧‧", each drop The quality of the liquid crystal dropped 100 times was measured for 100 times, and the evaluation was made based on the number of drops when the deviation of the quality reached a size that was not suitable for the ODF process.

The more the number of dripping, the more stable the dripping can be continued for a long time, and the higher the process suitability is.

Sample A: 95,000 times

Sample B: 40,000 times

Sample C: 100000 times

Sample D: 10000 times

The performance is C>A>B>D.

Cryopreservability: Evaluation of preservation at low temperature is after preparing the composition, weighing 0.5g of the composition into a 1mL sample bottle, and storing it in a temperature-controlled test tank at -25°C for 240 hours, visually Observe the occurrence of precipitates from the composition, and measure the test time when the precipitates are observed. The longer the test time before precipitation occurs, the better the preservation at low temperature.

Solubility at low temperature: The evaluation of solubility at low temperature is that after preparing the composition, weigh 1g of the composition into a 2mL sample bottle, place it in a temperature-controlled test tank, and set the following operating state as "- 20°C (hold for 1 hour) → increase temperature (0.1°C/per minute) → 0°C (hold for 1 hour) → increase temperature (0.1°C/per minute) → 20°C (maintain 1 hour) → decrease temperature (-0.1°C/minute )→0℃(Hold for 1 hour)→Cool down (-0.1℃/per minute)→-20℃" set as a cycle and continue to provide temperature changes, visually observe the occurrence of precipitates from the composition, and measure and observe Test time when precipitated.

The longer the test time, the more stable the liquid crystal phase can be maintained for a long time, and the solubility at low temperatures is good.

Sample A: 72 hours

Sample B: 600 hours

Sample C: 384 hours

Sample D: 1440 hours

The performance is D>B>C>A.

Volatility/fouling of manufacturing equipment: The volatility evaluation of the liquid crystal material is carried out by observing the operating state of the vacuum stirring and degassing mixer with a stroboscope and visually observing the foaming of the liquid crystal material. Specifically, add 0.8kg of the composition to the dedicated container of a vacuum stirring defoaming mixer with a capacity of 2.0L, and degas and mix the vacuum stirring at a revolution speed of 15S-1 and a rotation speed of 7.5S-1 under a degassing of 4kPa. The machine runs, and the time before the start of foaming is measured.

The longer the time before the start of foaming, the less volatile and the lower the possibility of polluting the manufacturing equipment, and therefore the higher the performance.

Sample A: 200 seconds

Sample B: 45 seconds

Sample C: 60 seconds

Sample D: 15 seconds

The performance is A>C>B>D.

(Examples 1~33)

The liquid crystal composition of the present invention and a liquid crystal display device using the composition were produced, and the physical properties were measured.

As described above, it can be understood that the present invention exhibits excellent effects.

Claims (4)

A liquid crystal composition containing one or more compounds represented by the general formula (i), and further containing one or more compounds selected from the general formula (N-1), (N-2) and (N -3) The compound in the represented compound,

(In the above general formula (1), R ⁱ¹ and R ⁱ² each independently represent an alkenyl group with 2 to 8 carbon atoms; X ⁱ¹ represents a hydrogen atom, an alkyl group with 1 to 4 carbon atoms, and an alkyl group with 1 to 4 carbon atoms. 4 of alkoxy, cyano, fluorine atom or chlorine atom; n ⁱ¹¹ and n ⁱ¹² each independently represent 0 or 1, n ⁱ¹¹ + n ⁱ¹² represent 0 or 1; n ⁱ²¹ and n ⁱ²² each independently represent 0, 1 Or 2, n ⁱ²¹ + n ⁱ²² represents 2; A ⁱ¹¹ and A ⁱ¹² each independently represent 1,4-cyclohexylene (1 -CH ₂ -or 2 or more non-adjacent- CH ₂ -may be substituted by -O-, and the hydrogen atoms may be independently substituted by alkyl groups with 1 to 4 carbon atoms, alkoxy groups with 1 to 4 carbon atoms, cyano groups, fluorine atoms or chlorine atoms) ; A ⁱ²¹ and A ⁱ²² each independently represent 1,4-phenylene (1 -CH= or 2 or more non-adjacent -CH= in the group can also be substituted by -N=, exist One hydrogen atom in the group can also be substituted by an alkyl group with 1 to 4 carbon atoms, an alkoxy group with 1 to 4 carbon atoms, a cyano group, a fluorine atom or a chlorine atom); A ⁱ²¹ or A ⁱ²² can be the same Can be different),

(In the formula, R ^N11 , R ^N12 , R ^N21 , R ^N22 , R ^N31 and R ^N32 each independently represent an alkyl group with 1 to 8 carbon atoms, and one of the alkyl groups or two or more non-adjacent ones The -CH ₂ -can also be independently replaced by -CH=CH-, -C≡C-, -O-, -CO-, -COO- or -OCO-; A ^N11 , A ^N12 , A ^N21 , A ^N22 , A ^N31 and A ^N32 each independently represent a group selected from (a) 1,4-cyclohexylene (1 -CH ₂ -present in the group or 2 or more non-adjacent -CH ₂ -also Can be substituted by -O-), (b) 1,4-phenylene (1 -CH= or 2 or more non-adjacent -CH= in the group can also be substituted by -N=) , (C) Naphthalene-2,6-diyl, 1,2,3,4-tetrahydronaphthalene-2,6-diyl or decahydronaphthalene-2,6-diyl (present in naphthalene-2,6 -Diyl or 1 of 1,2,3,4-tetrahydronaphthalene-2,6-diyl -CH= or 2 or more non-adjacent -CH= can also be substituted by -N=), And (d) 1,4-cyclohexenylene group consisting of groups, the above-mentioned groups (a), group (b), group (c) and group (d) may be independently cyano, Fluorine atom or chlorine atom substitution; Z ^N11 , Z ^N12 , Z ^N21 , Z ^N22 , Z ^N31 and Z ^N32 each independently represent a single bond, -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH _2- , -CH ₂ O-, -COO-, -OCO-, -OCF ₂ -, -CF ₂ O-, -CH=NN=CH-, -CH=CH-, -CF=CF- or -C≡C -; X ^N21 represents a hydrogen atom or a fluorine atom; T ^N31 represents -CH ₂ -or an oxygen atom; n ^N11 , n ^N12 , n ^N21 , n ^N22 , n ^N31 and n ^N32 each independently represent an integer from 0 to 3, n ^N11 +n ^N12 , n ^N21 +n ^N22 and n ^N31 +n ^N32 are independently 1, 2 or 3 respectively. When there are multiple A ^N11 ~A ^N32 , Z ^N11 ~Z ^N32 , they can be the same May be different; however, it does not include the compound represented by general formula (i)). For example, the liquid crystal composition of the first item of the scope of patent application, which further contains one or more compounds represented by the general formula (J),

(In the formula, R ^J1 represents an alkyl group with 1 to 8 carbon atoms. One of the alkyl groups or two or more non-adjacent -CH ₂ -s may be independently replaced by -CH=CH-,- C≡C-, -O-, -CO-, -COO- or -OCO- substitution; n ^J1 represents 0, 1, 2, 3 or 4; A ^J1 , A ^J2 and A ^J3 each independently represent a choice ( a) 1,4- cyclohexylene (in the presence of a group -CH ₂ - adjacent to the two or more of -CH ₂ - may be replaced by -O-), (b) 1,4 -Phenylene (1 -CH= or 2 or more non-adjacent -CH= in the group can also be substituted by -N=), and (c) naphthalene-2,6-diyl, 1,2,3,4-Tetrahydronaphthalene-2,6-diyl or decahydronaphthalene-2,6-diyl (present in naphthalene-2,6-diyl or 1,2,3,4-tetrahydronaphthalene-2,6-diyl One of the hydronaphthalene-2,6-diyl groups -CH= or two or more non-adjacent -CH= groups can also be substituted by -N=), the above group (a), Group (b) and group (c) can also be substituted by cyano group, fluorine atom, chlorine atom, methyl group, trifluoromethyl group or trifluoromethoxy group; Z ^J1 and Z ^J2 each independently represent a single bond , -CH ₂ CH ₂ -, -(CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -OCF ₂ -, -CF ₂ O-, -COO-, -OCO- or -C≡C -; When n ^J1 is 2, 3, or 4 and there are multiple A ^J2s , they can be the same or different. When n ^J1 is 2, 3 or 4 and there are multiple Z ^J1s , they are equal May be the same or different; X ^J1 represents a hydrogen atom, a fluorine atom, a chlorine atom, a cyano group, a trifluoromethyl group, a fluoromethoxy group, a difluoromethoxy group, a trifluoromethoxy group or 2,2,2-tri The fluoroethyl group, however, does not include the compound represented by the general formula (i)). For example, the liquid crystal composition of item 1 or 2 of the scope of patent application, which further contains one or more compounds represented by the general formula (L),

(In the formula, R ^L1 and R ^L2 each independently represent an alkyl group with 1 to 8 carbon atoms, and one or two or more non-adjacent -CH ₂ -s in the alkyl group may be each independently- CH=CH-, -C≡C-, -O-, -CO-, -COO- or -OCO- substitution; n ^L1 represents 0, 1, 2 or 3; A ^L1 , A ^L2 and A ^L3 are independently selected from the group consisting represents (a) 1,4- cyclohexylene (in the presence of a group -CH ₂ - or two or more of the adjacent -CH ₂ - may be replaced by -O-), (b ) 1,4-phenylene (1 -CH= or 2 or more non-adjacent -CH= in the group can also be substituted by -N=), and (c) naphthalene-2,6 -Diyl, 1,2,3,4-tetrahydronaphthalene-2,6-diyl or decahydronaphthalene-2,6-diyl (exist in naphthalene-2,6-diyl or 1,2,3 ,4-Tetrahydronaphthalene-2,6-diyl group consisting of one -CH= or two or more non-adjacent -CH= groups which may also be substituted by -N=), the above-mentioned groups (a), group (b) and group (c) can also be independently substituted by a cyano group, a fluorine atom or a chlorine atom; Z ^L1 and Z ^L2 each independently represent a single bond, -CH ₂ CH ₂ -, -( CH ₂ ) ₄ -, -OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, -OCF ₂ -, -CF ₂ O-, -CH=NN=CH-, -CH=CH-, -CF=CF- or -C≡C-; when n ^L1 is 2 or 3 and there are multiple A ^L2s , they can be the same or different, where n ^L1 is 2 or 3 and there are multiple Z ^L2s In this case, they may be the same or different; however, they do not include the compounds represented by the general formulas (i), (N-1), (N-2), (N-3), and (J)). A liquid crystal display element which uses the liquid crystal composition of any one of items 1 to 3 in the scope of patent application.