TWI704214B - Nematic liquid crystal composition and liquid crystal display element using the same - Google Patents

Abstract

The problem to be solved by the present invention is to provide a negative dielectric with large refractive index anisotropy (△n), small rotational viscosity (γ1), large elastic constant (K ₃₃ ), and high voltage holding rate (VHR) The liquid crystal composition of each conductivity (△ε), and it is provided that when the liquid crystal composition is used, there is no display defect such as drip marks, residual image or display unevenness, or display defects such as drip marks, residual image or display unevenness are suppressed, A liquid crystal display element with excellent display quality that combines low driving voltage with high transmittance and high response speed.

Provided is a liquid crystal composition with negative dielectric anisotropy and a liquid crystal display element using the liquid crystal composition, wherein the liquid crystal composition consists of the absolute value of the dielectric anisotropy (｜△ε｜) and the spiral pitch (P The formula (I) composed of μm) is in the range of 1 to 50, and the liquid crystal composition contains one or more compounds represented by the general formula (np01) and the general formula (np02).

｜△ε｜/P×100 formula (I)

Description

Nematic liquid crystal composition and liquid crystal display element using the same

The present invention relates to a nematic liquid crystal composition having a negative dielectric anisotropy (Δε) useful as a liquid crystal display material and a liquid crystal display element using the nematic liquid crystal composition.

Liquid crystal display elements are used in various household electrical equipment, measuring equipment, automotive panels, word processors, electronic notebooks, printers, computers, televisions, etc. represented by clocks and electronic computers. Representative examples of liquid crystal display methods include: TN (twisted nematic) type, STN (super twisted nematic) type, DS (dynamic light scattering) type, GH (guest-host) type, and IPS (in-plane switching) type , OCB (optical compensation birefringence) type, ECB (electrically controlled birefringence) type, VA (vertical alignment) type, CSH (color super vertical alignment) type or FLC (ferroelectric liquid crystal), etc. In addition, as the driving method, static driving, multiplexing driving, simple matrix method, and active matrix (AM) method driven by TFT (thin film transistor) or TFD (thin film diode) can also be cited.

Among these display methods, IPS type, ECB type, VA type, CSH type, etc. have the characteristic of using a liquid crystal composition that displays negative values of Δε. Among these, the VA-type display method driven by AM is used for high-speed and wide viewing angle display devices such as televisions.

For nematic liquid crystal compositions used in display methods such as VA type, high-speed response from 3D to high-definition is required. That is, the rotational viscosity (γ1) of the liquid crystal composition is small, and the elastic constant (K ₃₃ ) is large. It is important that the value of γ1/K ₃₃ obtained from this is small enough.

In addition, it is necessary to set the Δn×d product of the refractive index anisotropy (Δn) and the cell gap (d) to match the small cell gap used to improve the response speed to change the Δn of the liquid crystal material Adjust in an appropriately large range. In addition, it is required to suppress γ1 of the liquid crystal composition to a low level.

So far, various studies have been conducted on compounds whose Δε is negative and whose absolute value is large to improve the characteristics of liquid crystal compositions.

As a liquid crystal material in which Δε is negative, it is disclosed that liquid crystal compounds (A) and (B) having a 2,3-difluorophenylene skeleton as described below are used (refer to Patent Document 1) However, γ1/K _{33 which} is small enough has not been obtained.

In addition, by using a combination of a liquid crystal compound (N2) and a compound represented by the general formula (N3) as a compound in which Δε is approximately zero, the value of γ1/K ₃₃ can be made small (refer to Patent Document 2), but Requested to further improve the response speed.

(In the formula, R ^p and R ^q each independently represent an alkyl group having 1 to 10 carbon atoms, and ring J, ring F, and ring K each independently represent trans-1,4-cyclohexylene or 1,4- Phenylene.)

In Patent Document 3, it is disclosed that the response speed of a homeotropic liquid crystal cell can be improved by using a liquid crystal material with a large exponent represented by (Equation 1), but it is still not sufficient.

Patent Document 4 discloses a liquid crystal composition using a biphenyl compound and a liquid crystal compound with a negative dielectric constant, but does not disclose a liquid crystal composition using a palm agent.

In Patent Document 5, a vertical alignment type liquid crystal display device using a palm agent is disclosed. In Patent Document 6, a vertical alignment type super-twisted liquid crystal display device and a manufacturing method thereof are disclosed, but they do not take into account low driving voltage. With high transmittance and high response speed.

As mentioned above, although various researches have been made to improve the characteristics of liquid crystal compositions, it is still important that liquid crystal compositions used in liquid crystal TVs that require high-speed response have low driving voltage, high transmittance, and high response speed. The problem is to seek a liquid crystal display element with excellent display quality with low driving voltage, high transmittance, and high response speed without any problems such as drip marks, residual images, or uneven display during use.

Patent Document 1: Japanese Patent Publication No. 8-104869

Patent Document 2: WO2015/050035A1

Patent Document 3: Japanese Patent Application Publication No. 2006-301643

Patent Document 4: Japanese Patent Application Publication No. 2015-91983

Patent Document 5: Japanese Patent Application Publication No. 2009-229894

Patent Document 6: Japanese Patent No. 5229766

The problem to be solved by the present invention is to provide a liquid crystal composition which has a large refractive index anisotropy (Δn), a small rotational viscosity (γ1), a high voltage holding rate (VHR), and a high elastic constant ( K ₃₃ ) is large, with negative dielectric anisotropy (△ε), and seeks a display that does not have drip marks, residual images, or uneven display when using the liquid crystal composition. Poor display or drip marks, residual images, or uneven display. Defects are suppressed, and a liquid crystal display element with excellent display quality that combines low drive voltage with high transmittance and high response speed.

After intensively studying various liquid crystal compositions and various physical property values, the inventors found that by formula (I), the liquid crystal composition with negative dielectric anisotropy in the range of 3 to 70 can be used. The foregoing problems are solved, and the present invention has been completed.

That is, it was found that by preparing a liquid crystal composition in a way that the value obtained by the formula (I) is in the range of 3 to 70, a liquid crystal display element that solves the problem can be obtained, wherein the formula (I) is a dielectric The absolute value of each conductivity (|△ε|) and the spiral pitch (P: μm) are composed.

｜△ε｜/P×100 formula (I)

In addition, it has been found that a PS mode, PSA mode, PSVA mode, PS-IPS mode, or PS-FFS mode liquid crystal display element using this liquid crystal composition can be provided.

With the present invention, it is possible to provide a liquid crystal composition with large refractive index anisotropy (△n), low rotational viscosity (γ1), high voltage holding rate (VHR), and negative dielectric anisotropy (△ε) In addition, it can provide a liquid crystal composition that has no display defects such as dripping marks, image retention, or display unevenness, or the display defects such as dripping marks, image retention, or display unevenness are suppressed, and low driving voltage, high transmittance, and high response speed can be provided. Liquid crystal display element with excellent display quality.

The liquid crystal composition of the present invention is a liquid crystal composition with negative dielectric anisotropy, and is composed of the absolute value of the dielectric anisotropy (|△ε|) and the spiral pitch (P: μm) of formula (I) The obtained value is in the range of 3 to 70, containing one or more compounds represented by general formula (np01) and general formula (np02),

｜△ε｜/P×100 formula (I)

(In the formula, R ⁰¹ , R ⁰² , R ⁰³ , and R ⁰⁴ each independently represent an alkyl group with 1 to 10 carbon atoms, an alkoxy group with 1 to 10 carbon atoms, an alkenyl group with 2 to 10 carbon atoms, Alkenyloxy with 2-10 carbon atoms, the hydrogen atom in the alkyl group may be substituted by a fluorine atom, and n ⁰¹ and n ⁰² each independently represent 0 or 1.).

In order to obtain a liquid crystal display device with excellent display quality that takes into account low driving voltage and high transmittance and high response speed, it is preferable to adjust the value obtained by formula (I) to be between 3 and 70 range. The lower limit of the value obtained by the formula (I) is preferably 4, preferably 5, preferably 6, preferably 7, preferably 8, preferably 9, preferably 10, preferably 11 , Preferably 12, preferably 13, preferably 14, preferably 15, preferably 16, preferably 17, preferably 18, preferably 19, preferably 20. The upper limit of the value obtained by formula (I) is preferably 65, preferably 60, preferably 55, preferably 50, preferably 45, preferably 44, preferably 43, preferably 42 , Preferably 41, preferably 40, preferably 39, preferably 38, preferably 37, preferably 36, preferably 35, preferably 34, preferably 33, preferably 32 , Preferably 31, preferably 30.

In the liquid crystal composition of the present invention, the palm-like agent for inducing pitch may be a compound having an asymmetric carbon atom, and preferably has one or more 1,4-phenylene groups (herein One or two hydrogen atoms in the group can also be substituted by fluorine, methyl or methoxy.) The molecular structure.

The liquid crystal composition of the present invention is preferably a nematic liquid crystal composition in which Δε is negative, and preferably a palm nematic liquid crystal composition in which Δε is negative.

The liquid crystal composition of the present invention can also be used as a palm-acting agent for inducing spacing in TN mode or STN mode.

In order to improve or adjust the temperature dependence of the spacing, it can also be used by mixing multiple palm agents.

As the palm property agent for inducing the distance, a compound having asymmetric atoms can be used, an axial chiral compound can also be used, or a mixture of these can be used.

As the compound having an asymmetric atom, specifically, a compound represented by the general formula (Ch-I) is preferred.

(In the general formula (Ch-I), R ¹⁰⁰ and R ¹⁰¹ each independently represent a hydrogen atom, -CN, -NO ₂ , a halogen atom, -OCN, -SCN, -SF ₅ , one of 1 to 30 carbon atoms Palm or non-palm alkyl group, polymerizable group or palm-like group containing ring structure, when n ¹¹ is 0, at least one of R ¹⁰⁰ and R ¹⁰¹ is a palm alkyl group, Z ¹⁰⁰ and Z ¹⁰¹ are each Independently indicate -O-, -S-, -CO-, -COO-, -OCO-, -O-COO-, -CO-N(R ¹⁰⁵ )-, -N(R ¹⁰⁵ )-CO-,- OCH ₂ -, -CH ₂ O-, -SCH ₂ -, -CH ₂ S-, -CF ₂ O-, -OCF ₂ -, -CF ₂ S-, -SCF ₂ -, -CH ₂ CH ₂ -, -CF ₂ CH ₂ -, -CH ₂ CF ₂ -, -CF ₂ CF ₂ -, -CH=CH-, -CF=CH-, -CH=CF-, -CF=CF-, -C≡C- , -CH=CH-COO-, -OCO-CH=CH- or single bond, A ¹⁰⁰ and A ¹⁰¹ each independently represent: (a') trans-1,4-cyclohexylene (exist in this group One methylene group (methylene) or two or more unadjacent methylene groups may also be substituted with oxygen or sulfur atoms.), (b') 1,4-phenylene group (exist in this group One -CH= or two or more non-adjacent -CH= can also be substituted into nitrogen atoms.) or (c') 1,4-cyclohexenylene, 1,4-bicyclo[ 2.2.2] octylene, indane-2,5-diyl, naphthalene-2,6-diyl, decahydronaphthalene-2,6-diyl and 1,2,3,4-tetrahydronaphthalene- 2,6-Diyl (1 methylene group or 2 or more unadjacent methylene groups in these groups can also be substituted with oxygen or sulfur atoms, and one of these groups One -CH= or two or more unadjacent -CH= can also be substituted with nitrogen atoms.), when there are more than one A ¹⁰⁰ or A ¹⁰¹ , they may be the same or different, n ¹¹ represents 0 or 1, when n ¹¹ represents 0, m ¹² represents 0 and m ¹¹ represents 0, 1, 2, 3, 4, or 5, and n ¹¹ represents 1, m ¹¹ and m ¹² each independently represent 0, 1, 2 , 3, 4 or 5, D represents the divalent group represented by the following formulas (D1)~(D4) (in formulas (D1)~(D4), in the positions with black dots, they are respectively bonded to Z ¹⁰¹ (or R ¹⁰⁰ ) or Z ¹⁰¹ (or R ¹⁰⁰ ).)

In the general formula (Ch-I), R ¹⁰⁰ and R ¹⁰¹ each independently represent a hydrogen atom, -CN, -NO ₂ , a halogen atom, -OCN, -SCN, -SF ₅ , palms with 1 to 30 carbon atoms Sexual or non-palm alkyl groups, polymerizable groups or palm-like groups containing ring structures. When n ¹¹ is 0, at least one of R ¹⁰⁰ and R ¹⁰¹ is a palm-like alkyl group.

When R ¹⁰⁰ or R ¹⁰¹ in the general formula (Ch-I) is a palm or non- palm alkyl group with 1 to 30 carbon atoms, one or more of the alkyl groups are not adjacent The methylene group (-CH ₂ -) can also be -O-, -S-, -NH-, -N(CH ₃ )-, -CO-, and oxygen atoms or sulfur atoms are not directly bonded to each other. -COO-, -OCO-, -OCO-O-, -S-CO-, -CO-S-, -CH=CH-, -CF ₂ -, -CF=CH-, -CH= CF-,- CF=CF- or C≡C- substitution, one or more hydrogen atoms in the alkyl group may also be substituted by halogen atoms or cyano groups. In addition, the alkyl group may be a linear group, a branched group, or a ring structure-containing group.

The palm-like alkyl group is preferably a group represented by the following general formulas (Ra) to (Rk). In the general formulas (Ra)~(Rk), the asterisk (*) represents palm-like carbon atoms. When R ¹⁰⁰ or R ^{101 is} such a base, the left end is bonded to A ¹⁰⁰ (or D, Z ¹⁰¹ ) or A ¹⁰¹ (or D, Z ¹⁰⁰ ), respectively.

In the general formulas (Ra) to (Rk), R ¹⁰³ and R ¹⁰⁴ each independently represent a linear or branched alkyl group having 1 to 12 carbon atoms or a hydrogen atom. However, in the general formulas (Ra), (Rb), (Rd), (Re), (Rf), (Rg), (Ri), (Rj), R ¹⁰³ is a straight chain with 1 to 10 carbon atoms A chain-shaped or branched alkyl group, so that the carbon atom (position with *) to which R ¹⁰³ is bonded becomes an asymmetric atom. One or two or more methylene groups of the alkyl group may be -O-, -S-, -NH-, -N(CH ₃ )-, and oxygen atoms or sulfur atoms are not directly bonded to each other. -CO-, -CO-O-, -O-CO-, -O-CO-O-, -S-CO-, -CO-S-, -O-SO ₂ -, -SO ₂ -O-, -CH=CH-, -C≡C-, cyclopropylene or -Si(CH ₃ ) ₂ -substituted, and one or more hydrogen atoms of the alkyl group can also be halogen atoms (for example , Fluorine atom, chlorine atom, bromine atom) or cyano group substitution. Moreover, this alkyl group may have a polymerizable group. Examples of the polymerizable group include vinyl groups, allyl groups, and (meth)acrylic groups.

As R ¹⁰³ in the general formulas (Ra)~(Rj), it is preferably a straight chain with 1 to 12 carbon atoms that is not substituted with a methylene group or a hydrogen atom (that is, unsubstituted). A straight or branched alkyl group, more preferably an unsubstituted linear or branched alkyl group with 1 to 8 carbon atoms, and even more preferably an unsubstituted straight chain with 1 to 6 carbon atoms Chain alkyl.

R ¹⁰⁴ in the general formula (Rd) or (Ri) is preferably a hydrogen atom or an unsubstituted linear or branched alkyl group with 1 to 5 carbon atoms, more preferably an unsubstituted The linear alkyl group having 1 to 3 carbon atoms is more preferably a hydrogen atom or a methyl group.

In the general formulas (Ra) to (Rk), n ¹² is an integer of 0-20, preferably an integer of 0-10, more preferably an integer of 0-5, and still more preferably 0.

In the general formulas (Ra) to (Rk), n ¹³ is 0 or 1.

Moreover, in the general formula (Rk), n ¹⁴ is an integer of 0-5.

In the general formulas (Ra)~(Rk), X ¹⁰¹ and X ¹⁰² are each independently a halogen atom (fluorine atom, chlorine atom, bromine atom, iodine atom), cyano group, phenyl group (one or two of the phenyl group). Any more than one hydrogen atom can also be substituted by halogen atom, methyl group, methoxy group, trifluoromethyl group (-CF ₃ ), trifluoromethoxy group (-OCF ₃ ).), carbon number of 1~6 Alkyl group, alkoxy group with 1 to 6 carbon atoms, trifluoromethyl group or trifluoromethoxy group. However, in the general formulas (Ra), (Rb), (Rc), (Rf), (Rg), (Rh), X ¹⁰¹ and R ¹⁰³ are different groups from each other, so that the carbon to which X ¹⁰¹ is bonded The atom (position with *) becomes an asymmetric atom. In addition, in the general formulae (Rc) and (Re), X ¹⁰¹ and X ¹⁰² are groups different from each other, so that the carbon atom (position with *) to which X ¹⁰¹ is bonded becomes an asymmetric atom.

As X ¹⁰¹ and X ¹⁰² in the general formulas (Ra), (Rb), (Rc), (Rf), (Rg), (Rh), (Rk), preferably each independently is a halogen atom, a phenyl group ( One or more arbitrary hydrogen atoms of the phenyl group may be substituted by halogen atoms, methyl groups, methoxy groups, trifluoromethyl groups, trifluoromethoxy groups.), methyl groups, methoxy groups, trifluoro Methyl or trifluoromethoxy. Among them, as X ¹⁰¹ and X ¹⁰² in the general formulas (Ra), (Rb), (Rc), (Rf), (Rg), (Rh), it is more preferred that each independently be a phenyl group (1 of the phenyl group) One or more arbitrary hydrogen atoms may also be substituted by halogen atoms, methyl, methoxy, trifluoromethyl, or trifluoromethoxy.), more preferably unsubstituted phenyl. Furthermore, X ¹⁰¹ in the general formula (Rk) is more preferably a halogen atom, a cyano group, an alkyl group, an alkoxy group, a trifluoromethyl group or a trifluoromethoxy group, and still more preferably a halogen atom, a methyl group, Trifluoromethyl, or trifluoromethoxy.

In the general formulae (Re) and (Rj), Q is a divalent hydrocarbon group. The divalent hydrocarbon group may be linear, branched, or having a cyclic structure. In addition, the number of carbon atoms of the divalent hydrocarbon group is preferably 1-16, more preferably 1-10, and still more preferably 1-6. The divalent hydrocarbon group is preferably a group in which one carbon atom and two oxygen atoms in the general formulas (Re) and (Rj) are respectively bonded by a single bond. In this case, in the general formulas (Re) and (Rj), the two carbon atoms with an asterisk, the two oxygen atoms that are respectively bonded to the same and one carbon atom in Q form a 5-membered ring. Specifically, it can include: unsubstituted or one or two hydrogen atoms substituted by a hydrocarbon group Methyl, cyclopropylidene, cyclcbutylidene, cyclopentylene, cyclohexylene, etc., more preferably methylene, isopropylidene, or cyclohexylene.

The group represented by the general formula (Ra) to (Rk) is preferably a group represented by the general formula (Ra) or the general formula (Rf). The group represented by the general formula (Ra) is preferably the following group: In the general formula (Ra), n ¹² is an integer of 0 to 5, and X ¹⁰¹ is a phenyl group (one or two of the phenyl groups Any of the above hydrogen atoms may also be substituted by halogen atoms, methyl, methoxy, trifluoromethyl or trifluoromethoxy.), R ^{103 is} preferably an unsubstituted straight chain with 1 to 6 carbon atoms The alkyl or branched alkyl group is more preferably the following group: n ¹² is an integer from 0 to 5, X ¹⁰¹ is an unsubstituted phenyl group, and R ^{103 is more} preferably an unsubstituted carbon number of 1 to 6 is a linear or branched alkyl group. The group represented by the general formula (Rf) is preferably the following group: In the general formula (Rf), n ¹² is an integer from 0 to 5, n ¹³ is 0 or 1, and X ¹⁰³ is a halogen atom, a methyl group Or trifluoromethyl, R ¹⁰³ is an unsubstituted linear alkyl group with 2-12 carbon atoms.

R ¹⁰⁰ or R ^{101 as} the compound represented by the general formula (Ch-I) is particularly preferably from the following formulas (Ra-1)~(Ra-3) or general formula (Rf-1)~(Rf-3 ) Represents the base. When R ¹⁰⁰ or R ^{101 is} such a base, the left end is bonded to A ¹⁰⁰ (or D, Z ¹⁰¹ ) or A ¹⁰¹ (or D, Z ¹⁰⁰ ), respectively. Also, the asterisk indicates palm-like carbon atoms.

In the general formulae (Rf-1) to (Rf-3), n ¹³ represents 0 or 1. In addition, in general formulas (Ra-1) to (Ra-3) and (Rf-1) to (Rf-3), n represents an integer of 2-12. In the general formulas (Ra-1)~(Ra-3) and (Rf-1)~(Rf-3), n is preferably an integer of 3-8, more preferably 4, 5 or 6.

When R ¹⁰⁰ or R ¹⁰¹ in the general formula (Ch-I) is a polymerizable group, the polymerizable group is preferably from any of the following formulas (R-1) to (R-16) The basis of the structure represented by one. The right end of the group represented by formula (R-1)~(R-14), (R-16) and the left end of the group represented by formula (R-15) are respectively bonded to A ¹⁰⁰ (or D, Z ¹⁰¹ ) Or A ¹⁰¹ (or D, Z ¹⁰⁰ ).

These polymerizable groups are hardened by radical polymerization, radical addition polymerization, cationic polymerization, or anionic polymerization. Especially when ultraviolet polymerization is used as the polymerization method, it is preferably composed of formula (R-1), formula (R-2), formula (R-4), formula (R-5), and formula (R-7). ), formula (R-11), formula (R-13), formula (R-15) or formula (R-16), more preferably by formula (R-1), formula (R-2) , Formula (R-7), formula (R-11), formula (R-13) or formula (R-16), and more preferably by formula (R-1), formula (R-2) Or the base represented by formula (R-16).

When R ¹⁰⁰ or R ¹⁰¹ in the general formula (Ch-I) is a palm-like group containing a ring structure, the ring structure contained in the group may be aromatic or aliphatic. Examples of the ring structure include a monocyclic structure, a condensed ring structure, or a spirocyclic ring structure, and may contain one or two or more heteroatoms (hetero-atoms).

In the general formula (Ch-I), Z ¹⁰⁰ and Z ¹⁰¹ each independently represent -O-, -S-, -CO-, -COO-, -OCO-, -O-COO-, -CO-N(R ¹⁰⁵ )-, -N(R ¹⁰⁵ )-CO-, -OCH ₂ -, -CH ₂ O-, -SCH ₂ -, -CH ₂ S-, -CF ₂ O-, -OCF ₂ -, -CF ₂ S-, -SCF ₂ -, -CH ₂ CH ₂ -, -CF ₂ CH ₂ -, -CH ₂ CF ₂ -, -CF ₂ CF ₂ -, -CH=CH-, -CF=CH-, -CH =CF-, -CF=CF-, -C≡C-, -CH=CH-COO-, -OCO-CH=CH- or single bond. Here, R ¹⁰⁵ represents a linear or branched alkyl group with 1 to 12 carbon atoms, preferably a linear or branched alkyl group with 1 to 6 carbon atoms, and more preferably a carbon atom A straight-chain alkyl group of 1 to 3. When m ¹¹ is an integer greater than or equal to 2 and there are a plurality of Z ¹⁰⁰ in one molecule, they may be the same or different. Similarly, when m ¹² is an integer greater than or equal to 2 and there are a plurality of Z ¹⁰¹ in one molecule, they may be the same or different. As the compound represented by the general formula (Ch-I), Z ¹⁰⁰ and Z ^{101 are} preferably each independently -CF ₂ O-, -OCF ₂ -, -CF ₂ CF ₂ -, -CF=CF-, -COO -, -OCO-, -CH ₂ -CH ₂ -, -C≡C- or single bond.

In the general formula (Ch-I), A ¹⁰⁰ and A ¹⁰¹ are each independently the following (a') group, (b') group, or (c') group. When m ¹¹ is an integer greater than or equal to 2 and there are a plurality of A ¹⁰⁰ in one molecule, they may be the same or different. Similarly, when m ¹² is an integer greater than or equal to 2 and there are a plurality of A ¹⁰¹ in one molecule, they may be the same or different.

(a') trans-1,4-cyclohexylene (1 methylene group or two or more unadjacent methylene groups present in this group may be substituted with an oxygen atom or a sulfur atom.) .

(b') 1,4-phenylene (one -CH= or two or more non-adjacent -CH= in the group may be substituted with a nitrogen atom.).

(c') 1,4-cyclohexenyl, 1,4-bicyclo[2.2.2]octyl, indane-2,5-diyl, naphthalene-2,6-diyl, decalin -2,6-diyl and 1,2,3,4-tetrahydronaphthalene-2,6-diyl (1 methylene group in these groups or 2 or more unadjacent methylene groups The group can also be substituted with an oxygen atom or a sulfur atom. One -CH= or two or more non-adjacent groups in these groups- CH=, can also be substituted into a nitrogen atom. ).

The aforementioned (a') group, (b') group and (c') group may all be unsubstituted, or one or more of the hydrogen atoms in the group may be replaced by a halogen atom, a cyano group, or a nitro group. , Alkyl groups with 1 to 7 carbon atoms (one or more hydrogen atoms in the alkyl group may be substituted by fluorine or chlorine atoms.), alkoxy groups with 1 to 7 carbon atoms (the alkane One or more hydrogen atoms in the oxy group may be substituted by fluorine atoms or chlorine atoms.), an alkylcarbonyl group with 1 to 7 carbon atoms (one or more of the alkylcarbonyl groups Hydrogen atoms may also be substituted by fluorine atoms or chlorine atoms.) or alkoxycarbonyl groups with 1 to 7 carbon atoms (one or more hydrogen atoms in the alkoxycarbonyl group may also be replaced by fluorine atoms or chlorine Atom substitution.) Substitution.

A ¹⁰⁰ and A ¹⁰¹ as the compound represented by the general formula (Ch-I) are preferably the aforementioned (a') group or the aforementioned (b') group, more preferably unsubstituted trans-1,4- Cyclohexylene; unsubstituted 1,4-phenylene; one or more hydrogen atoms are replaced by fluorine atom, chlorine atom, cyano group, alkyl group with 1~4 carbon atoms, 1~ carbon atom 4 alkoxy group, C 1-4 alkyl carbonyl group or C 1-4 alkoxy carbonyl substituted trans-1,4-cyclohexylene or 1 or more hydrogen atoms are fluorine Atom, chlorine atom, cyano group, C1-C4 alkyl group, C1-C4 alkoxy group, C1-C4 alkylcarbonyl group or C1-C4 alkoxycarbonyl group substitution 1,4-phenylene, more preferably unsubstituted trans-1,4-cyclohexylene or unsubstituted 1,4-phenylene, and even more preferably unsubstituted 1 ,4-Phenylene.

In the general formula (Ch-I), n ¹¹ represents 0 or 1. ^-

When n ¹¹ is 0, m ¹² is 0, and m ¹¹ is 0, 1, 2, 3, 4, or 5. When n ¹¹ and m ¹² are 0, m ^{11 is} preferably 1, 2, 3, or 4, and more preferably 1, 2, or 3. ,

When n ¹¹ is 1, m ¹¹ and m ¹² are each independently 0, 1, 2, 3, 4, or 5, preferably 1, 2, 3, or 4, more preferably 1, 2, or 3. When n ¹¹ is 1, m ¹¹ and m ¹² may be different from each other, but they are preferably the same.

In the general formula (Ch-I), D is a divalent group represented by the aforementioned formulas (D1) to (D4). In formulas (D1)~(D4), the parts with black dots are bonded to Z ¹⁰¹ (or R ¹⁰⁰ ) or Z ¹⁰¹ (or R ¹⁰⁰ ), respectively.

In the group represented by (D1) or (D3), any one or two or more of any hydrogen atoms in the benzene ring may be each independently replaced by halogen atoms (F, Cl, Br, I) and the number of carbon atoms Alkyl group of 1-20 or alkoxy group of 1-20 carbon atoms is substituted. An alkyl group or alkoxy group with 1 to 20 carbon atoms that becomes a substituent of the hydrogen atom in the benzene ring. One or more of the hydrogen atoms in the group may be substituted with fluorine atoms. One or more methylene groups can also be -O-, -S-, -COO-, -OCO-, -CF ₂ -, -CF=CH-, -CH=CF-, -CF=CF -Or -C≡C- is substituted in such a way that oxygen atoms or sulfur atoms are not directly bonded to each other.

Among the compounds represented by the general formula (Ch-I), as a compound in which n ¹¹ is 0, it is preferable that the partial structure remaining after removing R ¹⁰⁰ and R ¹⁰¹ at both ends of the compound is represented by the following general formula (b1 )~(b13) indicates the structure. In the structure represented by general formulas (b1)~(b13), either end of the two ends is bonded to R ¹⁰⁰ , and the other end is bonded to R ¹⁰¹ . However, for compounds with these structures, at least one of R ¹⁰⁰ and R ¹⁰¹ is a palm-like alkyl group.

In general formulas (b1) to (b13), Z ¹⁰² is the same as Z ¹⁰⁰ and Z ^{101 in} general formula (Ch-I).

In addition, in the general formulas (b1) to (b13), A ¹⁰² is 1,4-phenylene (one -CH= or two or more unadjacent -CH= in the group may also be substituted As a nitrogen atom, one or two or more of any hydrogen atoms present in the group may be substituted by a halogen atom, a methyl group, a methoxy group, a trifluoromethyl group or a trifluoromethoxy group.). By substituting the -CH= or hydrogen atom in 1,4-phenylene, the reduction of crystallinity and the direction or size of dielectric anisotropy can be controlled for the liquid crystal composition containing the compound.

In terms of reliability, compared with the ring structure in A ¹⁰² , which is a heterocyclic compound such as a pyridine ring and a pyrimidine ring (that is, it is 1 -CH= or not adjacent to 1,4-phenylene ring). Two or more -CH=compounds substituted with nitrogen atoms) are preferably compounds in which the ring structure of A ¹⁰² is a benzene ring (that is,-which exists in 1,4-phenylene CH = a compound that is not substituted with a nitrogen atom). On the other hand, in terms of increasing the dielectric ^anisotropy , the ring structure in A ¹⁰² is preferably a compound with a benzene ring, and the ring structure in A ¹⁰¹ is preferably a heterocyclic compound such as a pyridine ring and a pyrimidine ring. . Compounds with hydrocarbon rings such as benzene ring or cyclohexane ring have relatively low polarization, but compounds with heterocyclic rings such as pyridine ring and pyrimidine ring have relatively large polarization. Since the crystallinity can be reduced and the liquid crystallinity can be stabilized, it is preferred.

Among the compounds represented by the general formula (Ch-I), the compounds in which n ¹¹ and m ¹² are 0 are preferably the following general formulas (Ch-I-1) to (Ch-I-30). In the general formulas (Ch-I-1)~(Ch-I-30), R ¹⁰⁰ , R ¹⁰¹ and Z ¹⁰⁰ represent the same meanings as R ¹⁰⁰ , R ¹⁰¹ and Z ¹⁰⁰ in the general formula (Ch-I), At least one of R ¹⁰⁰ and R ¹⁰¹ represents a palm-like alkyl group, L ¹⁰⁰ to L ¹⁰⁵ each independently represent a hydrogen atom or a fluorine atom, and L ¹⁰⁰ to L ¹⁰⁵ each independently represent a hydrogen atom or a fluorine atom.

As the compound represented by the general formula (Ch-I-1)~(Ch-I-30), the following compound is preferred: one or both of R ¹⁰⁰ and R ¹⁰¹ are from the general formula (Ra)~ The group represented by any one of (Rk) is more preferably the following compound: one or both of R ¹⁰⁰ and R ¹⁰¹ are represented by the aforementioned formulas (Ra-1) to (Ra-3) or the general formula ( Rf-1)~(Rf-3) represents the base. As a compound in which only one of R ¹⁰⁰ and R ¹⁰¹ is a group represented by any one of general formulas (Ra) to (Rk), it is preferable that the remaining one of R ¹⁰⁰ and R ^{101 is} the number of carbon atoms 1~30 non-palm alkyl groups (one or more of the unadjacent methylene groups in the alkyl group may also be -O-, -S-, -NH-, -N(CH ₃ ) -, -CO-, -COO-, -OCO-, -OCO-O-, -S-CO-, -CO-S-, -CH=CH-, -CF ₂ -, -CF=CH-,- CH=CF-, -CF=CF- or C≡C- substituted, one or more of the hydrogen atoms in the alkyl group may be substituted by halogen atoms or cyano groups.), more preferably R ¹⁰⁰ And the remaining one of R ¹⁰¹ is an alkyl group with 1 to 16 carbon atoms, an alkoxy group with 1 to 16 carbon atoms, an alkenyl group with 2 to 16 carbon atoms, or an alkenyloxy group with 2 to 16 carbon atoms Compound.

The liquid crystal composition of the present invention preferably contains at least one compound represented by any of the general formulas (Ch-I-1) to (Ch-I-30), and more preferably contains the compound represented by the general formula (Ch-I-1) to (Ch-I-30). I-30) represents the compound. As the compound represented by the general formula (Ch-I-30), specifically, the following general formulas (Ch-I-30-1) to (Ch-I-30-6) (wherein, n ¹³ represents 0 or 1, n represents an integer from 2 to 12, R ¹⁰² represents an alkyl group with 1 to 16 carbon atoms, an alkoxy group with 1 to 16 carbon atoms, an alkenyl group with 2 to 16 carbon atoms or a carbon atom The number 2~16 alkenyloxy group.) represents the compound. In the general formulas (Ch-I-30-1)~(Ch-I-30-6), R ^{102 is} preferably an alkyl group with 1 to 6 carbon atoms, an alkoxy group with 1 to 6 carbon atoms, carbon Alkenyl group with 2-6 atoms or alkenyloxy group with 2-6 carbon atoms.

When n ¹¹ is 1, the compound represented by the general formula (Ch-I) will have a structure having an asymmetric carbon in the ring structure part. In this case, as the compound represented by the general formula (Ch-I), it is preferable that D is the compound of the aforementioned formula (D2) or (D4), and it is more preferable that D is the compound of the formula (D4). The compound in which D is the formula (D2) is preferably a compound represented by the following general formulae (K2-1) to (K2-8), and the compound in which D is the formula (D4) is preferably Compounds represented by formula (K3-1)~(K3-6).

In general formulas (K2-1)~(K2-8), (K3-1)~(K3-6), R ^k each independently represents the same as R ¹⁰⁰ and R ^{101 in} general formula (Ch-I) significance. As the HTP(-) palm compound used in the liquid crystal composition of the present invention, compounds represented by the general formulas (K2-1)~(K2-8) or (K3-1)~(K3-6) are preferred Among them, R ^{k is} also each independently a palm-like or non-hand-like alkyl group with 1 to 30 carbon atoms (one or more non-adjacent methylene groups in the alkyl group may also be -O -, -S-, -NH-, -N(CH ₃ )-, -CO-, -COO-, -OCO-, -OCO-O-, -S-CO-, -CO-S-, -CH =CH-, -CF ₂ -, -CF=CH-, -CH=CF-, -CF=CF- or C≡C- substituted, one or more hydrogen atoms in the alkyl group can also be Halogen atom or cyano group substituted.) It is more preferred that R ^{k is} each independently an alkyl group having 1 to 16 carbon atoms, an alkoxy group having 1 to 16 carbon atoms, and an alkenyl group having 2 to 16 carbon atoms. Or a compound of an alkenyloxy group having 2 to 16 carbon atoms, and more preferably R ^k each independently is an alkyl group having 3 to 10 carbon atoms, an alkoxy group having 3 to 9 carbon atoms, and a carbon number of 3 to Alkenyl groups of 10 or alkenyloxy compounds with 3 to 9 carbon atoms.

If described in further detail, for example, a compound represented by formula (c01) is preferable.

Furthermore, it is even better to be a palm agent represented by formula (c02),

As the axial palm compound, specifically, a compound represented by the general formula (IV-1), (IV-2), (IV-3) or (IV-4) is preferred.

In general formulas (IV-1) and (IV-2), R ⁷¹ and R ⁷² each independently represent a hydrogen atom, a halogen atom, a cyano group, an isocyanate group, an isothiocyanate group, or a carbon atom number of 1-20 alkyl. Any one or two or more methylene groups in the alkyl group can also be -O-, -S-, -COO-, -OCO-, -CH in a way that oxygen atoms and sulfur atoms are not directly bonded to each other =CH -, -CF=CF- or -C≡C- replace. In addition, any one or two or more hydrogen atoms in the alkyl group may be substituted by halogen atoms. As the compound represented by the general formula (IV-1) or (IV-2), R ⁷¹ and R ^{72 are} preferably each independently an unsubstituted or substituted alkyl group having 1 to 20 carbon atoms, It is more preferably an unsubstituted alkyl group having 1 to 20 carbon atoms, and still more preferably an unsubstituted alkyl group having 1 to 6 carbon atoms.

In the general formulas (IV-1) and (IV-2), A ⁷¹ and A ⁷² each independently represent an aromatic or non-aromatic 3, 6 to 8 membered ring, or a condensed ring with 9 or more carbon atoms . Any one or more of hydrogen atoms in these ring structures may be substituted by halogen atoms, alkyl groups with 1 to 3 carbon atoms, or haloalkyl groups with 1 to 3 carbon atoms. In addition, any one or two or more methylene groups that are not adjacent to each other in the ring structure may be substituted by -O-, -S- or -NH-, and any one of the ring structures may not be mutually adjacent to each other. Two or more adjacent -CH= can also be replaced by -N=. When m ₇₁ is 2 or more and there are a plurality of A ⁷¹ in one molecule, they may be the same as each other or different. Similarly, when m ₇₂ is 2 or more and there are a plurality of A ⁷² in one molecule, they may be the same as each other or different.

As the compound represented by the general formula (IV-1) or (IV-2), A ⁷¹ and A ^{72 are} preferably each independently 1,4-phenylene, trans-1,4-cyclohexylene, pyridine -2,5-diyl, pyrimidine-2,5-diyl, naphthalene-2,6-diyl. It is also preferable that one or two or more hydrogen atoms in these groups are substituted with halogen atoms, alkyl groups having 1 to 3 carbon atoms, or haloalkyl groups having 1 to 3 carbon atoms. Among them, more preferred is 1,4-phenylene or trans-1,4-cyclohexylene in which one or more hydrogen atoms can be substituted by fluorine atoms, and even more preferred is unsubstituted 1, 4-phenylene or unsubstituted trans-1,4-cyclohexylene.

In the general formulas (IV-1) and (IV-2), Z ⁷¹ and Z ⁷² each independently represent a single bond or an alkylene group having 1 to 8 carbon atoms. Any one or two or more methylene groups in the alkylene group may be -O-, -S-, -COO-, -OCO-,-in such a way that oxygen atoms and sulfur atoms are not directly bonded to each other. CSO-, -OCS-, -N=N-, -CH=N-, -N=CH-, -N(O)=N-, -N=N(O)-, -CH=CH-,- CF=CF- or -C≡C-replacement. In addition, any one or two or more hydrogen atoms in the alkylene group may be substituted by halogen atoms. When m ₇₁ is 2 or more and there are a plurality of Z ⁷¹ in one molecule, they may be the same as each other or different. Similarly, when m ₇₂ is 2 or more and there are a plurality of Z ⁷² in one molecule, they may be the same as each other or different.

As the compound represented by the general formula (IV-1) or (IV-2), Z ⁷¹ and Z ^{72 are} preferably each independently a single bond, an unsubstituted alkylene group having 1 to 4 carbon atoms, -COO -, -OCO-, -CH=CH- or -C≡C-, more preferably a single bond, -CH ₂ -, -CH ₂ CH ₂ -, -COO-, -OCO-, -CH=CH- or -C≡C-, more preferably a single bond, -COO- or -OCO-.

In general formulas (IV-1) and (IV-2), X ⁷¹ and X ⁷² each independently represent a single bond, -COO-, -OCO-, -CH ₂ O-, -OCH ₂ -, -CF ₂ O -, -OCF ₂ -or -CH ₂ CH ₂ -. As the compound represented by the general formula (IV-1) or (IV-2), X ⁷¹ and X ^{72 are} preferably each independently a single bond, -COO-, -OCO-, -CH ₂ O-, -OCH ₂ -Or -CH ₂ CH ₂ -, more preferably a single bond, -COO- or -OCO-.

In the general formula (IV-2), R ⁷³ represents a hydrogen atom, a halogen atom, or -X ⁷¹ -(A ⁷¹ -Z ⁷¹ )m ₇₁ -R ⁷¹ .

In general formulas (IV-1) and (IV-2), m ₇₁ and m ₇₂ each independently represent an integer of 1 to 4. However, in the general formula (IV-2), when R ⁷³ is -X ⁷¹ -(A ⁷¹ -Z ⁷¹ )m ₇₁ -R ⁷¹ , either of the two m ₇₁ may be zero. As the compound represented by the general formula (IV-1) or (IV-2), m ₇₁ and m _{72 are} preferably 2 or 3 each independently, more preferably 2.

In addition, the palm agent may be right-handed or left-handed, as long as it is appropriately used according to the configuration of the liquid crystal display element.

In the general formula (np01) and the general formula (np02), R ⁰¹ , R ⁰² , R ⁰³ , and R ^{04 are} preferably each independently an alkyl group with 1 to 5 carbon atoms, preferably 1 to 5 carbon atoms The alkoxy group is preferably an alkenyl group with 2 to 5 carbon atoms, preferably an alkenyloxy group with 2 to 5 carbon atoms, more preferably an alkyl group with 1 to 5 carbon atoms, and still more preferably The alkoxy group having 1 to 3 carbon atoms is more preferably an alkenyl group having 2 to 3 carbon atoms, and the alkenyl group having 2 to 3 carbon atoms is still more preferable.

In the general formula (np01) and the general formula (np02), n ⁰¹ and n ⁰² each independently represent 0 or 1. When γ1 is made smaller and a high response speed is desired, n ^{01 is} preferably 0.

When it is a compound represented by general formula (np01) and n ⁰¹ represents 0, it is preferably a compound represented by general formula (II-11) or general formula (II-12),

It is more suitable when the response speed of the liquid crystal display element is important.

In the formula, R ^V and R ^V1 each independently represent an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably an alkyl group having 1 to 5 carbon atoms or an alkyl group having 2 to 5 carbon atoms. The alkenyl group of 5 is preferably an alkyl group having 2 to 5 carbon atoms or an alkenyl group having 2 to 3 carbon atoms. In addition, one of these alkyl or alkenyl groups or two or more non-adjacent -CH ₂ -groups may be substituted by an oxygen atom.

The compound represented by the general formula (II-11) and/or the general formula (II-12), for example, is preferably the general formula (II-101) to (II-110), particularly preferably the general formula (II-103) ) Or general formula (II-108).

In further detail, in order to obtain a high response speed, the content of the compound represented by the general formula (II-11) and the general formula (II-12) is preferably 10 to 80% by mass. In the case of precipitation at low temperature, its content is preferably 5 to 40% by mass. In addition, when high voltage retention (VHR) is important, it is preferable to contain 1 to 30% by mass of the compound represented by general formula (II-11) and general formula (II-12), and preferably 1 to 20% by mass, preferably 1 to 10% by mass. When a higher voltage holding ratio (VHR) is obtained, it is preferable to contain 1 to 15% by mass of the compound represented by the general formula (II-108).

When it is a compound represented by the general formula (np01), and n ⁰¹ is another preferred form when 0 is represented, R ⁰¹ is an alkyl group with 1 to 10 carbon atoms, and R ⁰² is an alkane with 1 to 10 carbon atoms Group or alkoxy group with 1-10 carbon atoms. In this case, R ^{01 is} preferably an alkyl group with 1 to 5 carbon atoms, R ^{01 is more} preferably an alkyl group with 2 to 5 carbon atoms, and R ^{02 is} preferably an alkyl group with 1 to 5 carbon atoms or For an alkoxy group having 1 to 4 carbon atoms, R ^{02 is} preferably an alkyl group having 2 to 5 carbon atoms, which is more appropriate when considering both high VHR and high response speed.

When it is a compound represented by general formula (np01) and n ⁰¹ represents 1, it is preferably a compound represented by formula (L-4.1) to formula (L-4.10),

More preferably, it is the formula (L-4.4). When the high response speed is important, the formula (L-4.4) is preferred.

When it is a compound represented by general formula (np02) and n ⁰² represents 0, it is preferably a compound selected from the group of compounds of formula (L-3.1) to formula (L-3.7),

More preferably, it is a compound represented by formula (L-3.1), formula (L-3.2), formula (L-3.4) or formula (L-3.6), especially when high response speed and high VHR are important Formula (L-3.1) or Formula (L-3.2). When attaching importance to the case of a large elastic constant, the formula (L-3.4) is preferred.

When it is a compound represented by the general formula (np02) and n ⁰² represents 1, it is preferably a compound represented by the formula (L-5.1) to (L-5.7),

More preferred is a compound represented by formula (L-5.1) or formula (L-5.2).

The liquid crystal composition of the present invention may further contain a compound represented by general formula (III-1) and/or general formula (III-2).

In the formula, R ³¹ to R ³⁴ each independently represent an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, or an alkyl group having 2 to 10 carbon atoms. Alkenyloxy group, one -CH ₂ -existing in R ³¹ to R ³⁴ or two or more non-adjacent -CH ₂ -s may be independently substituted with -O- or -S-, and there is One or two or more hydrogen atoms in R ³¹ to R ³⁴ may each independently be substituted with a fluorine atom or a chlorine atom. Preferably, R ³¹ and R ³³ are each independently an alkane having 1 to 5 carbon atoms. Group, alkoxy group with 1 to 5 carbon atoms, alkenyl group with 2 to 5 carbon atoms or alkenyloxy group with 2 to 5 carbon atoms, more preferably alkyl group with 1 to 5 carbon atoms or carbon atom number The alkenyl group of 2 to 5, more preferably an alkyl group of 1 to 3 carbon atoms or an alkenyl group of 2 to 3 carbon atoms, R ³² and R ^{34 are} preferably each independently an alkyl group of 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, 1 carbon atom To 5 alkoxy.

Ring A ³² , ring B ³¹ and ring B ³² each 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, 2,3-difluoro-1,4-phenylene, 1,4-cyclohexenylene, 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 is preferably trans-1,4-cyclohexylene or 1,4-phenylene.

Z ³¹ and Z ³² each independently represent -OCH ₂ -, -CH ₂ O-, -CF ₂ O-, -OCF ₂ -, -CH ₂ CH ₂ -, -CF ₂ CF ₂ -or a single bond, preferably It is -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, especially It is preferably -CH ₂ O- or a single bond.

The compound represented by the general formula (III-1), specifically, is preferably a compound represented by the general formula (III-A1) to the general formula (III-A4) shown below, preferably the compound represented by the general formula ( The compound represented by III-A1) is preferably a compound represented by general formula (III-A3), preferably a compound represented by general formula (III-A4), more preferably a compound represented by general formula (III-A1) The compound, More preferred is a compound represented by general formula (III-A3), and particularly preferred is a compound represented by general formula (III-A1).

In the formula, R ³¹ and R ^{32 have} the same meaning as above.

The compound represented by the general formula (III-2), specifically, is preferably a compound represented by the general formula (III-B1) to the general formula (III-B6) shown below, and is preferably the compound represented by the general formula ( The compound represented by III-B1) is preferably a compound represented by general formula (III-B3), preferably a compound represented by general formula (III-B4), preferably represented by general formula (III-B5) The compound is preferably a compound represented by general formula (III-B6), more preferably a compound of general formula (III-B1), more preferably a compound of general formula (III-B3), more preferably a compound of general formula ( The compound of III-B5) is more preferably a compound of general formula (III-B6), particularly preferably a compound represented by general formula (III-B1), and particularly preferably a compound represented by general formula (III-B5).

In the formula, R ³³ and R ^{34 have} the same meaning as above.

The liquid crystal composition of the present invention is preferably composed of a combination of general formula (III-A1) and general formula (III-B1), more preferably composed of general formula (III-A1) and general formula (III-B1) and general formula The combination composition of (III-B4) is more preferably composed of a combination of general formula (III-A1) and general formula (III-B1) and general formula (III-B5).

The liquid crystal composition of the present invention is preferably composed of a combination of general formula (III-A3) and general formula (III-B5), and more preferably composed of general formula (III-A3) and general formula (III-B4) and general formula ( The combination composition of III-B5) is more preferably composed of a combination of general formula (III-A3) and general formula (III-B5) and general formula (III-B1).

The liquid crystal composition of the present invention is preferably composed of a combination of general formula (III-A4) and general formula (III-B1), and more preferably composed of general formula (III-A4) and general formula (III-A1) and general formula ( III- The combination of B1) is preferably composed of the combination of general formula (III-A4) and general formula (III-B5), preferably by general formula (III-A4) and general formula (III-B5) and general formula ( The combination of III-B4) is preferably composed of a combination of general formula (III-A4) and general formula (III-B1), and more preferably composed of general formula (III-A4) and general formula (III-B1) and general formula (III-B1) The combination of formula (III-B5).

The liquid crystal composition of the present invention preferably must contain a compound selected from the group of compounds of the general formula (III-B7),

(In the formula, R ³³ and R ^{34 have} the same meaning as above.).

The liquid crystal composition of the present invention contains one or more compounds represented by the general formula (III-1) and/or the general formula (III-2), and preferably contains two to ten types. The content is 10 to 90% by mass, and the lower limit is preferably 10% by mass, more preferably 15% by mass, more preferably 20% by mass, preferably 25% by mass, preferably 30% by mass, preferably 35 The mass is preferably 40 mass%, preferably 45% by mass, and the upper limit is preferably 80% by mass, preferably 75% by mass, preferably 70% by mass, preferably 65% by mass, preferably 60% by mass %, preferably 55% by mass, more preferably 50% by mass, more preferably 45% by mass.

The liquid crystal composition of the present invention preferably contains one or more compounds selected from compounds represented by general formula (IV-A) to general formula (IV-J) as other components.

However, it does not include compounds with the same general formula (np01) or general formula (np02).

In the formula, R ⁴¹ and R ⁴² each independently represent an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkenyl group having 2 to 5 carbon atoms. The alkenyloxy group is preferably an alkyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 3 carbon atoms, or an alkenyl group having 2 to 5 carbon atoms.

X ⁴¹ represents an alkyl group with 1 to 3 carbon atoms, an alkoxy group with 1 to 3 carbon atoms, a fluorine atom or a hydrogen atom, preferably a methyl group, a fluorine atom or a hydrogen atom, more preferably a fluorine atom or a hydrogen atom .

In addition, R ⁴¹ and R ^{42 of} general formula (IV-F), general formula (IV-G), general formula (IV-H), and general formula (IV-I) may each independently have a carbon number of 2 to Alkenyl group of 5 or alkenyloxy group having 2 to 5 carbon atoms.

It is preferably selected from general formula (IV-A) to general formula (IV-J), general formula (IV-A), general formula (IV-D), general formula (IV-F), general formula ( IV-G), compounds of general formula (IV-H) and general formula (IV-I), more preferably selected from general formula (IV-A), general formula (IV-F), general formula (IV-G) ), compounds of general formula (IV-H) and general formula (IV-I), more preferably compounds selected from general formula (IV-F), general formula (IV-H) and general formula (IV-I) , Particularly preferably a compound selected from general formula (III-F) and general formula (III-H).

Selected from the group of compounds represented by general formula (IV-A) to general formula (IV-J) The content of the compound is 1% to 60% by mass, preferably 5% to 50% by mass, preferably 5% to 40% by mass, preferably 10% to 40% by mass, preferably 10% by mass % To 30% by mass.

The liquid crystal composition of the present invention may further contain one or more compounds represented by the general formula (V).

In the formula, R ⁶¹ and R ⁶² each independently represent an alkyl group having 1 to 8 carbon atoms, an alkoxy group having 1 to 8 carbon atoms, an alkenyl group having 2 to 8 carbon atoms, or an alkenyl group having 2 to 8 carbon atoms. Alkenyloxyl is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms.

The liquid crystal composition of the present invention may contain one or more compounds represented by the general formula (N-001).

In the formula, R ^N1 and R ^N2 each independently represent an alkyl group having 1 to 8 carbon atoms, an alkoxy group having 1 to 8 carbon atoms, an alkenyl group having 2 to 8 carbon atoms, or an alkyl group having 2 to 8 carbon atoms. The alkenyloxy group is preferably an alkyl group having 1 to 5 carbon atoms.

In the formula, L ¹ and L ² each independently represent a hydrogen atom, a fluorine atom, CH ₃ or CF ₃ , and at least one of L ¹ and L ² is preferably a fluorine atom, and both of them are preferably a fluorine atom.

The compound represented by the general formula (IV-I), the general formula (V) or the general formula (N-001) is suitable for obtaining a liquid crystal composition with a large Δn, and can be expected to accelerate the reaction rate of the polymerizable compound , So very useful.

The liquid crystal composition of the present invention may also contain one or two or more compounds represented by general formula (VIII-a), general formula (VIII-c) or general formula (VIII-d).

In the formula, R ⁵¹ and R ⁵² each independently represent 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 5 carbon atoms, and X ⁵¹ and X ⁵² are each independently Ground represents a fluorine atom or a hydrogen atom, and at least one of X ⁵¹ and X ⁵² is a fluorine atom.

The liquid crystal composition of the present invention may contain one or more compounds represented by general formula (V-9.1) to general formula (V-9.3).

The liquid crystal composition of the present invention contains a polymerizable compound, and may also contain a polymerizable compound represented by the general formula (I-1).

In the formula, n ¹¹ and n ¹² each independently represent an integer from 0 to 3, n ¹¹ +n ¹² is an integer from 1 to 6, and when there are a plurality of R ¹¹ or Z, they may be the same or different. In addition, n ¹¹ +n ^{12 is} preferably an integer of 1 to 5, preferably an integer of 1 to 4, preferably an integer of 1 to 3, more preferably an integer of 2 to 3.

In the formula, Z represents a hydrogen atom, an alkyl group having 1 to 12 carbon atoms, an alkoxy group having 1 to 12 carbon atoms, or R ¹² , and preferably represents R ¹² .

In the formula, R ¹¹ represents P ¹¹ -S ¹¹ -, R ¹² represents P ¹² -S ¹² -, P ¹¹ and P ¹² each independently represent any one of formula (R-1) to formula (R-15) ,

It is preferably formula (R-1) or formula (R-2), and it is particularly preferable that the molecular structure of the polymerizable compound must contain formula (R-2).

In the formula, S ¹¹ and S ¹² each independently represent a single bond or an alkylene group with 1 to 15 carbon atoms. One or more of -CH ₂ -in the alkylene group may not be directly adjacent to the oxygen atom The method is substituted by -O-, -OCO- or -COO-, preferably a single bond or an alkylene having 1 to 6 carbon atoms, more preferably a single bond. When the solubility with the liquid crystal composition is important, the alkylene having 1 to 6 carbon atoms is preferred, the alkylene having 1 to 3 carbon atoms is more preferred, and the alkylene having 1 to 2 carbon atoms is more preferred. In the alkylene group, one or more of -CH ₂ -in the alkylene group can also be substituted by -O-, -OCO- or -COO- in a way that oxygen atoms are not directly adjacent to each other. And, in the presence of S ¹¹ and S ^{12 is} at least one of them is a single bond, preferably the presence of S ¹¹ and S ^{12 is} all are all single bonds.

烷-2,5-二基、菲-2,7-二基，較佳為1,4-伸苯基、1,4-伸環己基、萘-2,6 -二基、菲-2,7-二基，更佳為1,4-伸苯基、萘-2,6-二基、菲-2,7-二基。另，M¹¹及M¹²之中至少1個被碳原子數1至12之烷氧基取代。該烷氧基較佳為碳原子數1至6之烷氧基，較佳為碳原子數1至5之烷氧基，較佳為碳原子數1至4之烷氧基，較佳為碳原子數1至3之烷氧基，較佳為碳原子數1至2之烷氧基，尤佳為碳原子數1之烷氧基。 In the formula, M ¹¹ and M ¹² each independently represent 1,4-phenylene, benzene-1,2,4-triyl, benzene-1,2,4,6-tetrayl, and 1,4-phenylene Hexyl, pyridine-2,5-diyl, pyrimidine-2,5-diyl, naphthalene-2,6-diyl, indane-2,5-diyl, 1,2,3,4-tetrahydronaphthalene -2,6-diyl or 1,3-di

Alkyl-2,5-diyl, phenanthrene-2,7-diyl, preferably 1,4-phenylene, 1,4-cyclohexylene, naphthalene-2,6-diyl, phenanthrene-2, 7-diyl, more preferably 1,4-phenylene, naphthalene-2,6-diyl, and phenanthrene-2,7-diyl. In addition, at least one of M ¹¹ and M ¹² is substituted with an alkoxy group having 1 to 12 carbon atoms. The alkoxy group is preferably an alkoxy group having 1 to 6 carbon atoms, preferably an alkoxy group having 1 to 5 carbon atoms, preferably an alkoxy group having 1 to 4 carbon atoms, preferably carbon The alkoxy group having 1 to 3 atoms is preferably an alkoxy group having 1 to 2 carbon atoms, and particularly preferably an alkoxy group having 1 carbon atom.

L ¹¹ represents a single bond, -O-, -S-, -CH ₂ -, -OCH ₂ -, -CH ₂ O-, -CO-, -C ₂ H ₄ -, -COO-, -OCO-,- OCOOCH ₂ -, -CH ₂ OCOO-, -OCH ₂ CH ₂ O-, -CO-NR ^a -, -NR ^a -CO-, -SCH ₂ -, -CH ₂ S-, -CH=CR ^a -COO -, -CH=CR ^a -OCO-, -COO-CR ^a =CH-, -OCO-CR ^a =CH-, -COO-CR ^a =CH-COO-, -COO-CR ^a =CH-OCO- ^{, -OCO-CR a = CH-} COO -, - OCO-CR a = CH-OCO -, - (CH 2) z -C (= O) -O -, - (CH 2) zO- (C = O )-, -O-(C=O)-(CH ₂ )z-, -(C=O)-O-(CH ₂ )z-, -CH=CH-, -CF=CF-, -CF= CH-, -CH=CF-, -CF ₂ -, -CF ₂ O-, -OCF ₂ -, -CF ₂ CH ₂ -, -CH ₂ CF ₂ -, -CF ₂ CF ₂ -or -C≡C - (wherein, R ^a each independently represent a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, the z in the formula represents an integer of 1 to 4), preferably a single bond, -OCH ₂ -, - CH ₂ O-, -C ₂ H ₄ -, -COO-, -OCO-, -CH=CR ^a -COO-, -CH=CR ^a -OCO-, -COO-CR ^a =CH-, -OCO-CR ^a =CH-, -(CH ₂ ) _z -COO-, -(CH ₂ )z-OCO-, -OCO-(CH ₂ )z-, -COO-(CH ₂ )z-, -CH=CH- _{, -CF 2 O -, - OCF} 2 - or -C≡C- (wherein, R ^a each independently represent a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, the foregoing formula, z represents 1 to 4 of Integer.), more preferably a single bond, -COO-, -OCO-, -CH=CH-COO-, -CH=CH-OCO-, -COO -CH=CH-, -OCO-CH=CH-, -(CH ₂ ) ₂ -COO-, -(CH ₂ ) ₂ -OCO-, -OCO-(CH ₂ ) ₂ -, -COO-(CH ₂ ) ₂ -or -C≡C-, more preferably- COO-, -OCO-, -CH=CH-COO-, -OCO-CH=CH-, -(CH ₂ ) ₂ -COO- or -OCO-(CH ₂ ) ₂ -.

m ¹¹ represents an integer from 0 to 4, and when there are a plurality of L ¹¹ and M ¹² , they may be the same or different. In addition, m ^{11 is} preferably an integer of 1 to 3. When the polymerization speed is important, m ^{11 is} preferably an integer of 2 to 4, and when the compatibility with the liquid crystal composition is important, m ^{11 is} preferably An integer from 0 to 2. Therefore, in order to balance the polymerization speed and compatibility, m ^{11 is} particularly preferably 2.

As the polymerizable compound represented by the general formula (I-1), specifically, the following general formulas (I-11-01) to (I-11-10) and general formula (I-12-01) To (I-12-06), general formula (I-13-01) to (I-13-06), general formula (I-21-01) to (I-21-17), general formula (I- T01) to (I-T10), compounds represented by general formulas (I-A01) to (I-A09).

In the formula, R ^M1 , R ^M2 and R ^M3 each independently represent a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms, or formula (R-1) to formula (R- Any one of 15) is preferably a hydrogen atom, an alkoxy group having 1 to 3 carbon atoms or any one of formula (R-1) to formula (R-5) each independently, preferably each It is independently a hydrogen atom, an alkoxy group having 1 to 3 carbon atoms, or any one of formula (R-1) to formula (R-2).

Preferably, at least one of R ^M1 , R ^M2 and R ^M3 is any one of formula (R-1) to formula (R-15), more preferably at least two are formula (R-1) to Any one of formula (R-15), more preferably, at least 3 are any one of formula (R-1) to formula (R-15).

That is, the polymerizable compound represented by the general formula (I-1) is a mesogen structure having one or more rings as shown in the foregoing structure, and is characterized in that it has an alkoxy group at one of the sites. It has one or more polymerizable groups. If described in further detail, in addition to the above-mentioned features, a fluorine group may be provided at one site in the mesogen structure.

As the polymerizable compound represented by the general formula (I-1), a compound represented by the general formula (I-21) or (I-22) is also suitable.

In the formula, R ¹⁰¹ to R ¹⁰⁶ each independently represent a hydrogen atom, an alkyl group having 1 to 12 carbon atoms, an alkoxy group having 1 to 12 carbon atoms, or in formulas (R-1) to (R-15) Any one preferably represents a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, or any one of formula (R-1) to formula (R-5), more preferably hydrogen atom, formula (R- 1) Or formula (R-2).

If described in further detail, two, three or four of R ¹⁰¹ to R ¹⁰⁶ are preferably each independently of formula (R-1) or formula (R-2), among R ¹⁰¹ to R ¹⁰⁶ Preferably, 3 or 4 of each are independently formula (R-1) or formula (R-2), and 3 of R ¹⁰¹ to R ¹⁰⁶ are preferably each independently formula (R-1) or formula (R-2).

A ¹¹ and B ¹¹ each independently represent 1,4-phenylene, 1,4-cyclohexylene, naphthalene-2,6-diyl or 1,2,3,4-tetrahydronaphthalene-2,6- Diyl group, the group is unsubstituted or may be substituted by an alkyl group with 1 to 3 carbon atoms, an alkoxy group with 1 to 3 carbon atoms, or halogen, preferably unsubstituted, with 1 to 3 carbon atoms The 1,4-phenylene or naphthalene-2,6-diyl substituted with an alkyl group or substituted with a fluoro group is more preferably 1,4-phenylene substituted with a fluoro group. However, when none of R ¹⁰¹ to R ¹⁰⁶ is an alkoxy group, at least one of A ¹¹ and B ¹¹ is substituted with an alkoxy group having 1 to 5 carbon atoms. In addition, when A ¹¹ and B ^{11 are} not substituted by an alkoxy group having 1 to 5 carbon atoms, at least one of R ¹⁰¹ to R ¹⁰⁶ represents an alkoxy group having 1 to 5 carbon atoms. However, the alkoxy group is preferably an alkoxy group having 1 to 4 carbon atoms, preferably an alkoxy group having 1 to 3 carbon atoms, preferably an alkoxy group having 1 to 2 carbon atoms, and more preferably It is an alkoxy group with 1 carbon atom. That is, the compound represented by the general formula (I-21) or (I-22) is characterized by having at least one alkoxy group.

L ¹³ represents a single bond, -OCH ₂ -, -CH ₂ O-, -C ₂ H ₄ -, -COO-, -OCO-, -CH=CR ^a -COO-, -CH=CR ^a -OCO-, -COO-CR ^a =CH-, -OCO-CR ^a =CH-, -(CH ₂ ) _z -COO-, -(CH ₂ )z-OCO-, -OCO-(CH ₂ )z-, -COO -(CH ₂ )z-, -CH=CH-, -CF ₂ O-, -OCF ₂ -or -C≡C- (wherein R ^a each independently represents a hydrogen atom or a carbon atom number of 1 to 3 Alkyl, in the foregoing formula, z represents an integer of 1 to 4.), preferably a single bond, -OCH ₂ -, -CH ₂ O-, -C ₂ H ₄ -, -COO-, -OCO-,- CH=CH-COO-, -CH=CH-OCO-, -COO-CH=CH-, -OCO-CH=CH-, -(CH ₂ ) ₂ -COO-, -(CH ₂ ) ₂ -OCO- , -OCO-(CH ₂ ) ₂ -, -COO-(CH ₂ ) ₂ -, -CH=CH- or -C≡C-, more preferably single bond, -COO-, -OCO-, -CH= CH-COO-, -OCO-CH=CH-, -(CH ₂ ) ₂ -COO- or -OCO-(CH ₂ ) ₂ -.

As the polymerizable compound represented by the general formula (I-21), compounds represented by the general formulas (I-B01) to (I-B15) can be cited.

In the formula, R ^M1 , R ^M2 and R ^{M3 are} as previously described.

The liquid crystal composition of the present invention may also contain a polymerizable compound represented by general formula (I-31) and general formula (I-32).

However, the compound represented by the general formula (I-1) is not included.

In the formula, R ¹⁰⁷ represents P ¹⁰⁷ -S ¹⁰⁷ -, R ¹¹⁰ represents P ¹¹⁰ -S ¹¹⁰ -, P ¹⁰⁷ and P ¹¹⁰ each independently represent any one of formula (R-1) to formula (R-15) , S ¹⁰⁷ and S ¹¹⁰ each independently represent a single bond or an alkylene group with 1 to 15 carbon atoms. One or more -CH ₂ -in the alkylene group can also be directly adjacent to the oxygen atom. -O-, -OCO- or -COO- substituted, preferably a single bond or an alkylene having 1 to 6 carbon atoms (one or more of -CH ₂ -in the alkylene can also be an oxygen atom Ways that are not directly adjacent are replaced by -O-.), especially a single bond.

烷-2,5-二基，基為未經取代或亦可被碳原子數1至12之烷基、鹵素、氰基或硝基取代，L¹⁴表示單鍵、-OCH₂-、-CH₂O-、-C₂H₄-、 -COO-、-OCO-、-CH=CR^a-COO-、-CH=CR^a-OCO-、-COO-CR^a=CH-、-OCO-CR^a=CH-、-(CH₂)_z-COO-、-(CH₂)z-OCO-、-OCO-(CH₂)z-、-COO-(CH₂)z-、-CH=CH-、-CF₂O-、-OCF₂-或-C≡C-(式中，R^a各自獨立地表示氫原子或碳原子數1至3之烷基，前述式中，z表示1至4之整數。)。 In the formula, R ¹⁰⁸ , R ¹⁰⁹ , R ¹¹¹ and R ¹¹² each independently represent formula (R-1) to formula (R-15), an alkyl group having 1 to 3 carbon atoms, and an alkyl group having 1 to 3 carbon atoms Any one of an oxy group, a fluorine atom or a hydrogen atom, A ¹² represents 1,4-phenylene, 1,4-cyclohexylene, pyridine-2,5-diyl, pyrimidine-2,5-diyl , Naphthalene-2,6-diyl, indane-2,5-diyl, 1,2,3,4-tetrahydronaphthalene-2,6-diyl or 1,3-di

Alkyl-2,5-diyl, the group is unsubstituted or can be substituted by alkyl, halogen, cyano or nitro with 1 to 12 carbon atoms, L ¹⁴ represents a single bond, -OCH ₂ -, -CH ₂ O-, -C ₂ H ₄ -, -COO-, -OCO-, -CH=CR ^a -COO-, -CH=CR ^a -OCO-, -COO-CR ^a =CH-, -OCO-CR ^a =CH-, -(CH ₂ ) _z -COO-, -(CH ₂ )z-OCO-, -OCO-(CH ₂ )z-, -COO-(CH ₂ )z-, -CH=CH- _{, -CF 2 O -, - OCF} 2 - or -C≡C- (wherein, R ^a each independently represent a hydrogen atom or an alkyl group of 1 to 3 carbon atoms, in the formula, z represents 1 to 4 of Integer.).

In the formula, X ¹⁵ , X ¹⁶ , X ¹⁷ and X ¹⁸ each independently represent a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, or a fluorine atom.

As the compound represented by the general formula (I-32), for example, the compound represented by the formula (XX-1) to the general formula (XX-10) is preferred, and the compound represented by the formula (XX-1) to the formula (XX -4).

In formula (XX-1) to general formula (XX-10), Sp ^xx represents an alkylene group with 1 to 8 carbon atoms or -O-(CH ₂ ) _s- (where s represents an integer from 2 to 7 , The oxygen atom is bonded to the ring.).

In the formula (XX-1) to the general formula (XX-10), the hydrogen atom in the 1,4-phenylene group can be further replaced by -F, -Cl, -CF ₃ , -CH ₃ , and formula (R-1 ) To any one of formula (R-15).

In addition, as the compound represented by the general formula (I-31), for example, a polymerizable compound such as the formula (M31) to the formula (M48) is preferable.

Moreover, it is also preferably a polymerizable compound of formula (M301) to formula (M316).

The hydrogen atoms in the 1,4-phenylene and naphthyl groups in formulas (M301) to (M316) may be further substituted with -F, -Cl, -CF ₃ , and -CH ₃ .

In addition, polymerizable compounds of formula (Ia-1) to formula (Ia-31) can also be used.

The liquid crystal composition of the present invention preferably uses a polymerizable compound represented by formula (XX-2), formula (XX-4), formula (M31), formula (M-302) or (Ia-31) or the like The molecular structure of polymeric compounds.

The liquid crystal composition of the present invention contains 0.01 to 5% by mass of the polymerizable compound, and the lower limit of the content is preferably 0.02% by mass, preferably 0.03% by mass, preferably 0.04% by mass, preferably 0.05% by mass, more preferably 0.06 mass%, preferably 0.07 mass%, preferably 0.08 mass%, preferably 0.09 mass%, preferably 0.1 mass%, preferably 0.15 mass%, preferably 0.2 mass%, more preferably 0.25% by mass, preferably 0.3% by mass, preferably 0.35% by mass, more preferably 0.4% by mass, preferably 0.5% by mass, preferably 0.55% by mass, and the upper limit of the content is preferably 4.5% by mass, more preferably Is 4% by mass, preferably 3.5% by mass, preferably 3% by mass, preferably 2.5% by mass, preferably 2% by mass, preferably 1.5% by mass, preferably 1% by mass, more preferably 0.95 mass%, preferably 0.9 mass%, preferably 0.85 mass%, preferably 0.8 mass%, preferably 0.75 mass%, preferably 0.7 mass%, preferably 0.65 mass%, preferably 0.6 % By mass, preferably 0.55% by mass. In further detail, when sufficient pretilt angle (pretilt angle) or low residual monomer or high voltage holding rate (VHR) is to be obtained, its content is preferably 0.2 to 0.6% by mass. In the case of precipitation, its content is preferably 0.1 to 0.4% by mass.

In addition to the above-mentioned compounds, the liquid crystal composition of the present invention may also contain normal nematic liquid crystals, smectic liquid crystals, cholesteric liquid crystals, antioxidants, ultraviolet absorbers, light stabilizers, infrared absorbers, and the like.

As the antioxidant used in the liquid crystal composition of the present invention, the general formula (H-1) to hindered phenol represented by general formula (H-4).

In general formula (H-1) to general formula (H-4), R ^H1 represents an alkyl group with 1 to 10 carbon atoms, an alkoxy group with 1 to 10 carbon atoms, and an alkenyl group with 2 to 10 carbon atoms or alkenyl group having a carbon number of 2 to 10, present in a group of -CH ₂ - adjacent to the two or more of -CH ₂ - may each independently be substituted with -O- or -S- In addition, one or two or more hydrogen atoms present in the group may be independently substituted with fluorine atoms or chlorine atoms. More specifically, it is preferably an alkyl group having 2 to 7 carbon atoms, an alkoxy group having 2 to 7 carbon atoms, an alkenyl group having 2 to 7 carbon atoms, or an alkenyl group having 2 to 7 carbon atoms, More preferably, it is an alkyl group having 3 to 7 carbon atoms or an alkenyl group having 2 to 7 carbon atoms.

In the general formula (H-4), M ^H4 represents an alkylene group having 1 to 15 carbon atoms (one or more -CH ₂ -in the alkylene group can also be used in such a way that the oxygen atom is not directly adjacent Replaced with -O-, -CO-, -COO-, -OCO-.), -OCH ₂ -, -CH ₂ O-, -COO-, -OCO-, -CF ₂ O-, -OCF ₂ -, -CF ₂ CF ₂ -, -CH=CH-COO-, -CH=CH-OCO-, -COO-CH=CH-, -OCO-CH=CH-, -CH=CH-, -C≡C- , Single bond, 1,4-phenylene (any hydrogen atom in 1,4-phenylene can also be substituted by fluorine atom.) or trans-1,4-cyclohexylene, preferably the number of carbon atoms For alkylene groups from 1 to 14, the number of carbon atoms is preferably a large value if considering volatility, but if considering viscosity, the number of carbon atoms is preferably not too large, and therefore, the number of carbon atoms is more preferably from 2 to 12 , More preferably 3 to 10 carbon atoms, more preferably 4 to 10 carbon atoms, more preferably 5 to 10 carbon atoms, still more preferably 6 to 10 carbon atoms.

In general formula (H-1) to general formula (H-4), one of 1,4-phenylene or two or more non-adjacent -CH= may be substituted by -N=. In addition, the hydrogen atoms in the 1,4-phenylene group may be independently substituted with fluorine atoms or chlorine atoms.

In the general formula (H-1) to the general formula (H-4), one of the 1,4-cyclohexylene groups or the non-adjacent two or more -CH ₂ -may also be -O- or -S- replace. In addition, the hydrogen atom in the 1,4-cyclohexylene group may be independently substituted with a fluorine atom or a chlorine atom.

More specifically, for example, formula (H-11) to formula (H-15) can be cited.

When the liquid crystal composition of the present invention contains an antioxidant, its content is preferably at least 10 ppm by mass, preferably at least 20 ppm by mass, and more preferably at least 50 ppm by mass. The upper limit when the antioxidant is contained is 10,000 ppm by mass, preferably 1,000 ppm by mass, preferably 500 ppm by mass, preferably 200 ppm by mass, and preferably 100 ppm by mass.

When the light stabilizer used in the liquid crystal composition of the present invention is contained, it is preferable to use commonly available HALS such as Tinuvin770 or LA-57. Its content is preferably adjusted in the range of 100 ppm to 2000 ppm, more preferably in the range of 200 ppm to 1200 ppm, and particularly preferably in the range of 500 ppm to 1200 ppm.

The dielectric anisotropy (Δε) of the liquid crystal composition of the present invention at 25°C is -2.0 to -8.0, and the lower limit is preferably -7.0, preferably -6.5, preferably -6.0, and preferably- 5.5, preferably -5.0, preferably -4.5, preferably -4.0, preferably -3.9, preferably -3.8, preferably -3.7, the upper limit is preferably -2.5, preferably- 2.6, preferably -2.7, preferably -2.8, preferably -2.9, preferably -3.0.

The refractive index anisotropy (Δn) of the liquid crystal composition of the present invention at 25°C is 0.08 to 0.20, and the lower limit is preferably 0.09, preferably 0.10, preferably 0.11, preferably 0.12, preferably 0.13 , The upper limit is preferably 0.19, preferably 0.18, preferably 0.17, preferably 0.16, preferably 0.15. In further detail, it is preferably 0.10 to 0.20 when responding to a thin cell gap, and preferably 0.08 to 0.12 when responding to a thick cell gap.

The rotational viscosity (γ ₁ ) of the liquid crystal composition of the present invention at 25°C is 50 to 200mPa‧s, and the lower limit is preferably 55mPa‧s, preferably 60mPa‧s, preferably 62mPa‧s, preferably 64mPa‧s, preferably 66mPa‧s, preferably 68mPa‧s, preferably 70mPa‧s, the upper limit is preferably 190mPa‧s, preferably 180mPa‧s, preferably 170mPa‧s, more preferably It is 160mPa‧s, preferably 150mPa‧s.

As long as the pitch is appropriately set according to the cell thickness of the liquid crystal display element, too short or too long will cause problems. The lower limit of the distance (μm) of the liquid crystal composition of the present invention at 25°C is 5μm, preferably 6μm, preferably 7μm, preferably 8μm, preferably 9μm, preferably 10 μm, preferably 11 μm, preferably 12 μm, preferably 13 μm, preferably 14 μm, preferably 15 μm, preferably 20 μm, the upper limit of the pitch is 140 μm, preferably 130 μm, preferably 120 μm, preferably It is 110 μm, preferably 100 μm, preferably 90 μm, preferably 80 μm, preferably 70 μm, and preferably 60 μm. The preferred range is as described above, but due to the influence of the cell thickness (cell gap), the structure of the transparent electrode, the type of the alignment film, etc., it must be adjusted appropriately within a certain range.

The nematic-isotropic liquid phase transition temperature (T _ni ) of the liquid crystal composition of the present invention is 60°C to 120°C, and the lower limit is preferably 65°C, preferably 70°C, preferably 71°C, more Preferably 72°C, preferably 73°C, preferably 74°C, preferably 75°C, the upper limit is preferably 110°C, preferably 105°C, preferably 100°C, preferably 95°C, more Preferably, it is 90°C, preferably 88°C, preferably 86°C, preferably 85°C, preferably 84°C, preferably 82°C, preferably 80°C.

The liquid crystal display element using the liquid crystal composition of the present invention has the following remarkable characteristics: no display defects such as dripping marks, residual images or display unevenness, or display defects such as dripping marks, residual images or display unevenness are suppressed, and low drive is considered. Voltage, high transmittance and high response speed.

The liquid crystal display element using the liquid crystal composition of the present invention is particularly useful for liquid crystal display elements for active matrix driving, and can be used in liquid crystal display elements for PS mode, PSA mode, PSVA mode, PS-IPS mode, or PS-FFS mode.

The liquid crystal display element of the present invention can obtain a sufficient and moderate tilt angle, without residual monomer, or with little or no problem, and high voltage retention (VHR), so there is no defects such as poor alignment or poor display Circumstances, poor alignment or poor display, etc. are fully suppressed.

Since the liquid crystal composition of the present invention can easily control the tilt angle and/or residual monomer, The energy cost for manufacturing can be easily optimized and reduced. Since the liquid crystal display element can be easily manufactured without defects, it is most suitable for improving production efficiency and stable mass production.

The two substrates used in the liquid crystal cell of the liquid crystal display element can be made of glass or a transparent material with flexibility like plastic, on the other hand, it can also be an opaque material such as silicon. A transparent substrate with a transparent electrode layer, for example, can be obtained by sputtering indium tin oxide (ITO) on a transparent substrate such as a glass plate.

The color filter can be produced by, for example, a pigment dispersion method, a printing method, an electrodeposition method, or a dyeing method. Taking the method of producing a color filter by the pigment dispersion method as an example, the curable coloring composition for the color filter is coated on the transparent substrate, patterned, and then cured by heating or light irradiation . By performing this step for the three colors of red, green, and blue, the pixel portion for the color filter can be produced. In addition, pixel electrodes with active elements such as TFTs, thin-film diodes, metal insulators and metal resistive elements can also be provided on the substrate.

The aforementioned substrates are opposed to each other so that the transparent electrode layer becomes the inner side. At this time, the interval between the substrates can also be adjusted through spacers. At this time, it is preferable to adjust so that the thickness of the obtained dimming layer is 1-100 μm. When it is more preferably 1.5 to 10 μm, when a polarizing plate is used, it is preferable to adjust the product of the refractive index anisotropy Δn of the liquid crystal and the cell thickness d in such a way that the contrast is maximized. In addition, when there are two polarizing plates, the polarization axis of each polarizing plate can also be adjusted so that the viewing angle or contrast becomes good. In addition, a retardation film for expanding the viewing angle can also be used. Examples of the spacer include glass particles, plastic particles, alumina particles, and photoresist materials. Then, a sealant such as an epoxy-based thermosetting composition is screen printed on the substrate in a shape provided with a liquid crystal injection port, the substrates are bonded to each other, and the sealant is thermally cured by heating.

The method of clamping the liquid crystal composition between two substrates can use the usual vacuum Injection method or ODF method, etc.

As a method for polymerizing the polymerizable compound contained in the liquid crystal composition of the present invention, a proper polymerization rate is desirable in order to obtain good alignment properties of the liquid crystal. Therefore, it is preferable to irradiate ultraviolet rays alone, in combination or sequentially A method of polymerizing active energy rays such as 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 polymerizing the liquid crystal composition in a state where the liquid crystal composition is sandwiched between two substrates, at least the substrate on the irradiated surface side must have appropriate transparency to the active energy rays. In addition, the following methods can also be used: use a mask during light irradiation to polymerize only a specific part, and then change conditions such as electric field, magnetic field, or temperature, so as to change the alignment state of the unpolymerized part and further the irradiation The energy lines converge. Especially when performing ultraviolet exposure, it is preferable to apply an AC electric field to the liquid crystal composition and simultaneously perform ultraviolet exposure. The applied AC electric field is preferably an AC with a frequency of 10 Hz to 10 kHz, and more preferably a frequency of 60 Hz to 10 kHz. The voltage is selected depending on the desired pretilt angle of the liquid crystal display element. That is, the pretilt angle of the liquid crystal display element can be controlled by the applied voltage. In the MVA mode liquid crystal display device, from the viewpoint of alignment stability and contrast, it is preferable to control the pretilt angle between 80 degrees and 89.9 degrees.

The temperature during irradiation is preferably within the temperature range at which the liquid crystal composition of the present invention maintains the liquid crystal state. Preferably, it is polymerized at a temperature close to room temperature, which is 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 liquid crystal composition, and it is preferable to cut the ultraviolet rays for use as necessary. 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 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

Examples are given below to further describe the present invention, but the present invention is not limited to these examples. In addition, "%" in the composition of the following Examples and Comparative Examples means "mass %".

The description of the compound in the examples uses the following code.

(Side chain)

(Link base)

(Ring structure)

In the examples, the measured physical properties are as follows.

T _ni : Nematic-isotropic liquid phase transition temperature (℃)

△n: Refractive index anisotropy at 25℃

△ε: Dielectric conductivity at 25℃

γ ₁ ：Rotational viscosity at 25℃ (mPa‧s)

K ₃₃ : Elastic constant K ₃₃ (pN) at 25℃

VHR: 1V, 60Hz, 60℃ voltage holding rate VHR(%)

P: Spiral pitch at 25℃

In addition, the measurement method is as follows.

T _ni is measured using a polarizing microscope equipped with a temperature adjustment stage.

△n is measured with Abbe refractometer.

△ε is measured using Agilent LCR meter.

The γ ₁ system is measured using the measuring device LCM-2 manufactured by Toyo Tecnica.

The K ₃₃ series uses the EC-1 measuring device manufactured by Toyo Technica for measurement.

The VHR is measured using the measuring device LCM-2 manufactured by Toyo Technica.

The P system uses a wedge shaped cell for measurement.

(Comparative Example 1, Comparative Example 2, Example 1, Example 2 and Example 3)

Compared with Comparative Example 1 (LC-1) and Comparative Example 2 (LC-2), the liquid crystal compositions of Example 1 (EX-1), Example 2 (EX-2) and Example 3 (EX-3) were prepared Object, measure its physical property value. Table 1 shows the structure of the liquid crystal composition and the results of its physical properties. In addition, Ex-1 is made by adding 1 g of Chiral dopant and 0.33 g of reactive monomer to 100 g of Host LC. Other compositions are also prepared in the same way.

Using the liquid crystal compositions EX-1, EX-2, EX-3 of the present invention and the comparative examples LC-1 and LC-2, liquid crystal display elements of PS-FFS mode were prepared. The electro-optical properties of this device were evaluated, and as a result, it was confirmed that the LC-1 injected liquid crystal display device did not function as a device. The liquid crystal display elements injected with EX-1, EX-2, and EX-3 were confirmed to function as elements, with low drive voltage, high transmittance and fast response speed. Confirm that the response speed of the liquid crystal display element injected into LC-2 is slower than that of EX-1, EX-2 and EX-3. Also, it was confirmed that slight misalignment occurred.

When (XX-4) was used instead of (XX-2) as the polymerizable compound, the same evaluation result was also confirmed.

When using (M33) or (M-302) instead of (XX-2) as the polymerizable compound, the same tendency was confirmed.

The VHRs of all the liquid crystal display elements were confirmed to be higher than 97%.

The residual image evaluation device Optipro manufactured by SHINTECH was used to evaluate all of these liquid crystal display elements. As a result, except for LC-1, it was confirmed that there was no residual image.

From the above, the liquid crystal composition of the present invention has a large refractive index anisotropy (△n), a small rotational viscosity (γ1), a large elastic constant (K ₃₃ ), and a high voltage holding rate (VHR) with negative For dielectric anisotropy (△ε), the liquid crystal display element using it is confirmed to have no display defects such as drip marks, residual images, or uneven display, or display defects such as drip marks, residual images, or display unevenness are suppressed, and both Low driving voltage, high transmittance and high response speed.

Claims (16)

A liquid crystal composition whose dielectric anisotropy is negative. The formula (I) composed of the absolute value of the dielectric anisotropy (|△ε|) and the spiral pitch (P: μm) is in the range of 3 to 70, Contains one or more compounds represented by general formula (np01) and general formula (np02), ｜△ε｜/P×100 Formula (I)

(In the formula, R ⁰¹ , R ⁰² , R ⁰³ , and R ⁰⁴ each independently represent an alkyl group having 1 to 10 carbon atoms, and one of the alkyl groups or two or more non-adjacent -CH _2- Each is independently substituted by -CH=CH- or -O-, n ⁰¹ and n ⁰² each independently represents 0 or 1), and contains a polymerizable compound represented by the general formula (I-1') or is selected from the general formula (I-31) and the polymerizable compound of the compound group represented by the general formula (I-32),

(In the formula, n ¹¹ and n ¹² each independently represent an integer from 1 to 3, and n ¹¹ +n ¹² is an integer from 2 to 4. When there are a plurality of R ¹¹ or Z, they may be the same or different, Z represents a hydrogen atom, an alkyl group having 1 to 12 carbon atoms, an alkoxy group having 1 to 12 carbon atoms, or R ¹² , R ¹¹ represents P ¹¹ -S ¹¹ -, R ¹² represents P ¹² -S ¹² -, P ¹¹ and P ¹² each independently represent any one of formula (R-1) to formula (R-15),

S ¹¹ and S ¹² each independently represent a single bond or an alkylene group having 1 to 15 carbon atoms. One or more -CH ₂ -in the alkylene group may also be directly adjacent to the oxygen atom. -O-, -OCO- or -COO- substituted, M ¹¹ and M ¹² each independently represent 1,4-phenylene, benzene-1,2,4-triyl, benzene-1,2,4,6 -Tetrayl, 1,4-cyclohexylene, pyridine-2,5-diyl, pyrimidine-2,5-diyl, naphthalene-2,6-diyl, indane-2,5-diyl, 1 ,2,3,4-tetrahydronaphthalene-2,6-diyl or 1,3-di

Alkyl-2,5-diyl, phenanthrene-2,7-diyl, at least one of M ¹¹ and M ¹² is substituted with an alkoxy group having 1 to 12 carbon atoms, L ¹¹ represents a single bond, -OCH ₂ -, -CH ₂ O-, -C ₂ H ₄ -, -COO-, -OCO-, -CH=CR ^a -COO-, -CH=CR ^a -OCO-, -COO-CR ^a =CH-, -OCO-CR ^a =CH-, -(CH ₂ ) _z -C(=O)-O-, -(CH ₂ )zO-(C=O)-, -O-(C=O)-(CH _{2) z -, - (C} = O) -O- (CH 2) z- or -CH = CH- (wherein, R ^a each independently represent a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, the aforementioned Where z represents an integer from 1 to 4), m ¹¹ represents an integer from 0 to 3, when there are a plurality of L ¹¹ and M ¹² , they may be the same or different),

(In the formula, R ¹⁰⁷ represents P ¹⁰⁷ -S ¹⁰⁷ -, R ¹¹⁰ represents P ¹¹⁰ -S ¹¹⁰ -, P ¹⁰⁷ and P ¹¹⁰ each independently represent any of the above formulas (R-1) to (R-15) For one thing, S ¹⁰⁷ and S ¹¹⁰ each independently represent a single bond or an alkylene group with 1 to 15 carbon atoms. One or more -CH ₂ -in the alkylene group may not be directly adjacent to the oxygen atom The method is substituted by -O-, -OCO- or -COO-, R ¹⁰⁸ , R ¹⁰⁹ , R ¹¹¹ and R ¹¹² are each independently represented by the above formula (R-1) to formula (R-15), the number of carbon atoms is 1 Any of the alkyl group, fluorine atom or hydrogen atom to 3, ring A ¹² represents 1,4-phenylene, 1,4-cyclohexylene, pyridine-2,5-diyl, pyrimidine-2, 5-diyl, naphthalene-2,6-diyl, indane-2,5-diyl, 1,2,3,4-tetrahydronaphthalene-2,6-diyl or 1,3-diyl

Alkyl-2,5-diyl, these groups can also be substituted by alkyl, halogen, cyano or nitro with 1 to 12 carbon atoms, L ¹⁴ represents a single bond, -OCH ₂ -, -CH ₂ O -, -C ₂ H ₄ -, -COO-, -OCO-, -CH=CR ^a -COO-, -CH=CR ^a -OCO-, -COO-CR ^a =CH-, -OCO-CR ^a = CH-, -(CH ₂ ) _z -COO-, -(CH ₂ )z-OCO-, -OCO-(CH ₂ )z-, -COO-(CH ₂ )z-, -CH=CH-,- CF ₂ O-, -OCF ₂ -, -C≡C- or -O-(CH ₂ )zO- (wherein R ^a each independently represents a hydrogen atom or an alkyl group with 1 to 3 carbon atoms, z represents Integer of 1 to 4, but does not include the compound represented by the general formula (I-1')), X ¹⁵ , X ¹⁶ , X ¹⁷ , and X ¹⁸ each independently represent a hydrogen atom and an alkyl group with 1 to 3 carbon atoms Or fluorine atom). For example, the liquid crystal composition of item 1 in the scope of patent application contains a compound represented by the general formula (Ch-I) as a palm-inducing agent for spacing,

(In the formula, R ¹⁰⁰ and R ¹⁰¹ each independently represent a hydrogen atom, -CN, -NO ₂ , a halogen atom, -OCN, -SCN, -SF ₅ , and the number of carbon atoms is 1-30. An alkyl group, a polymerizable group, or a palm-like group containing a ring structure. When n ¹¹ is 0, at least one of R ¹⁰⁰ and R ¹⁰¹ is a palm-like alkyl group, and Z ¹⁰⁰ and Z ¹⁰¹ each independently represent -O-, -S-, -CO-, -COO-, -OCO-, -O-COO-, -CO-N(R ¹⁰⁵ )-, -N(R ¹⁰⁵ )-CO-, -OCH ₂ -, -CH ₂ O-, -SCH ₂ -, -CH ₂ S-, -CF ₂ O-, -OCF ₂ -, -CF ₂ S-, -SCF ₂ -, -CH ₂ CH ₂ -, -CF ₂ CH ₂ -, -CH ₂ CF ₂ -, -CF ₂ CF ₂ -, -CH=CH-, -CF=CH-, -CH=CF-, -CF=CF-, -C≡C-, -CH=CH-COO -, -OCO-CH=CH- or a single bond, A ¹⁰⁰ and A ¹⁰¹ each independently represent: (a') trans-1,4-cyclohexylene (1 methylene group present in this group ( methylene) or two or more unadjacent methylene groups, which may also be substituted with oxygen or sulfur atoms), (b') 1,4-phenylene (1 -CH= or Two or more unadjacent -CH= can also be substituted into nitrogen atoms) or (c') 1,4-Cyclohexenylene, 1,4-bicyclo[2.2.2]octyl, Indane-2,5-diyl, naphthalene-2,6-diyl, decahydronaphthalene-2,6-diyl and 1,2,3,4-tetrahydronaphthalene-2,6-diyl (exist One methylene group or two or more unadjacent methylene groups in these groups may also be substituted with oxygen or sulfur atoms. One -CH= or non-adjacent methylene groups in these groups Two or more adjacent -CH= can also be substituted with nitrogen atoms), when there are more than one A ¹⁰⁰ or A ¹⁰¹ , they can be the same or different, n ¹¹ represents 0 or 1, n ¹¹ represents When 0, m ¹² represents 0, and m ¹¹ represents 0, 1, 2, 3, 4, or 5, and when n ¹¹ represents 1, m ¹¹ and m ¹² each independently represent 0, 1, 2, 3, 4, or 5 , D represents a divalent group represented by the following formulas (D1)~(D4),

(In formulas (D1)~(D4), the parts with black dots are bonded to Z ¹⁰⁰ (or R ¹⁰⁰ ) or Z ¹⁰¹ (or R ¹⁰¹ ), respectively). For example, the liquid crystal composition of item 1 or 2 of the scope of patent application contains one or more compounds represented by general formula (III-1) or general formula (III-2),

(In the formula, R ³¹ , R ³² , R ³³ , and R ³⁴ each independently represent an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms or Alkenyloxy groups with 2 to 10 carbon atoms, one -CH ₂ -existing in R ³¹ to R ³⁴ or two or more non-adjacent -CH ₂ -s may be independently substituted with -O- or -S-, in addition, one or two or more hydrogen atoms present in R ³¹ to R ³⁴ may each be independently substituted with a fluorine atom or a chlorine atom, ring A ³² , ring B ³¹ , and ring B ³² each Independently represents 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]octylene, Piperidine-1,4-diyl, naphthalene-2,6-diyl, decahydronaphthalene-2,6-diyl or 1,2,3,4-tetrahydronaphthalene-2,6-diyl, Z ³¹ and Z ³² each independently represent -OCH ₂ -, -CH ₂ O-, -CF ₂ O-, -OCF ₂ -, -CH ₂ CH ₂ -, -CF ₂ CF ₂ -, -COO-, -OCO -Or single button). For example, the liquid crystal composition of item 3 of the scope of patent application, wherein the general formula (III-1) is a compound selected from the group of compounds of general formula (III-A1) to general formula (III-A4),

(In the formula, R ³¹ and R ^{32 have} the same meaning as above). For example, the liquid crystal composition of item 3 of the scope of patent application, wherein the general formula (III-2) is a compound selected from the group of compounds of general formula (III-B1) to general formula (III-B6),

(In the formula, R ³³ and R ^{34 have} the same meaning as above). For example, the liquid crystal composition of item 1 or 2 of the scope of patent application, which further contains a compound represented by the general formula (III-B7),

(In the formula, R ³³ and R ³⁴ each independently represent an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, or an alkenyl group having 2 to 10 carbon atoms. For the alkenyloxy group, one -CH ₂ -existing in R ³³ and R ³⁴ or two or more non-adjacent -CH ₂ -s may be independently substituted with -O- or -S-, and, One or two or more hydrogen atoms present in R ³³ and R ³⁴ may be independently substituted with fluorine atoms or chlorine atoms). For example, the liquid crystal composition of item 1 in the scope of patent application, which contains the compound represented by formula (c01) as a palm-inducing agent for spacing,

For example, the liquid crystal composition of item 1 or 7 of the scope of patent application contains a compound represented by formula (c02) as a palm-inducing agent for inducing spacing,

For example, the liquid crystal composition of item 3 of the scope of patent application, wherein the total content of the general formula (III-1) and the general formula (III-2) is 10 to 90% by mass. For example, the liquid crystal composition of item 1 or 2 in the scope of patent application, wherein the content of palm agent is 0.01% to 5% by mass. For example, the liquid crystal composition of the first item in the scope of patent application, wherein the total content of the general formula (np01) and the general formula (np02) is 10 to 90% by mass. For example, the liquid crystal composition of item 1 or 2 in the scope of patent application has a dielectric anisotropy (△ε) in the range of -2.0 to -8.0 at 25°C, and a refractive index anisotropy (△n) at 25°C It is in the range of 0.08 to 0.20, the rotational viscosity (γ1) at 25°C is in the range of 50 to 200mPa‧s, and the nematic-isotropic liquid phase transition temperature (T _ni ) is in the range of 60°C to 120°C. Such as the liquid crystal composition of the first item of the patent application, wherein the value obtained by formula (I) is in the range of 5 to 40. A liquid crystal display element that uses any one of the 1 to 12 patents Crystalline composition. A liquid crystal display element for active matrix driving, which uses any one of the liquid crystal compositions of the first to 12th patent applications. A liquid crystal display element of PS mode, PSA mode, PSVA mode, PS-IPS mode or PS-FFS mode, using the liquid crystal composition of any one of items 1 to 12 in the scope of patent application.