JP2001011454A - Nematic liquid crystal composition and liquid crystal display system using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To broaden an operative temperature range of a liquid crystal display characteristic, decrease drive voltage and improve temperature change thereof by using a liquid crystal composition containing a compound selected from specific two groups as an essential component. SOLUTION: This nematic liquid crystal composition comprises 3 liquid crystal components A, B and C. Regarding the component A, at least one is selected from the group A1 including compounds represented by formulas I and II and from the group A2 including compounds represented by formulas III to VII respectively (wherein in formulas I to VII R1 is a 1 to 10C alkyl group or the like; Q1 is F, Cl or the like; X1 to X3 is each H, F, Cl or the like; W1 to W6 are each H, F, Cl or the like; K1 to K5 are each a single bond, -COO- or the like; ring A0 is 1,4-phenylene or the like; ring A1 to A4 are each 2 or 3-fluoro-1,4-phenylene or the like; and k1 to k8 are each 0 or 1). The component B is composed of 0 to 99.9 wt.% of a compound having a dielectric anisotropy of not less than +2 and the component C is composed of 0 to 85 wt.% of a compound having a dielectric anisotropy of -10 to +2. The sum of the components (B+C) is 0 to 99.9 wt.%.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nematic liquid crystal composition useful as an electro-optical display material and a liquid crystal display using the same.

[0002]

2. Description of the Related Art A typical liquid crystal display element is a TN-LCD.
(Twisted nematic liquid crystal display element)
It is used in watches, calculators, electronic organizers, pocket computers, word processors, personal computers and the like. On the other hand, with the increase in processing information of OA equipment, Scheffer et al. [SID '85 Digest, p.120 1985
Year], Kinukawa et al. [SID '86 Digest, p.122 1986], STN (Super Twisted Nematic) -L
CDs have been developed and have begun to spread widely to displays for high information processing such as portable terminals, electronic organizers, pocket computers, word processors, personal computers, and monitor displays.

Recently, an active addressing drive system [Proc. 12th IDRC p.5
03 1992] and multi-line addressing drive system [S
ID'92 Digest, p. 232 1992]. In addition, in order to achieve a brighter display and higher contrast ratio, instead of the color filter layer, a new reflective color liquid crystal display system using the birefringence of liquid crystal and a retardation plate [Television Society Technical Report vol. 14 No10.p.51 1990
And a liquid crystal display device having a reflective surface with a small parabolic surface on the substrate electrode side has been proposed.

In particular, in applications where the display area is to be increased, uniformity of display and high contrast with respect to the temperature distribution of the backlight are required, and a liquid crystal material having more stable alignment and less temperature dependency is required. A birefringence index corresponding to a predetermined value is required in order to suppress variations in cell thickness. Further, since high duty driving is performed due to an increase in the number of pixels, responsiveness, gradation, and the like corresponding to this are also emphasized. On the other hand, for small and medium-sized portable displays,
The stability of the display with respect to the use environment temperature is an important point, and a liquid crystal material having a lower driving voltage capable of reducing responsiveness and power consumption, or a temperature of -30 to 0 ° C. or 40 to 80 ° C.
It is required that the temperature dependence of the drive voltage in the temperature range of ° C. be small, high steepness be required, and that the frequency dependence corresponding to the desired duty drive be small in this temperature range. Further, the electrical resistance (specific resistance) of the liquid crystal must be set to a predetermined value so as not to become too high in order to eliminate burn-in, although it is necessary to avoid that the electric resistance (resistivity) is too low in order to reduce power consumption. Have been. As described above, there is still a demand for a liquid crystal material which is differentiated in more detail and which is slightly improved.

[0005] Suitable liquid crystal materials include birefringence,
Physical properties such as elastic constant, dielectric anisotropy, lower viscosity, wider nematic temperature, chemical stability, electrical stability (desired specific resistance, voltage holding ratio), etc. It is necessary to comprehensively optimize individual characteristics such as a pretilt angle and a wider d / p margin.
At present, proposals for new liquid crystal compounds or liquid crystal compositions are required.

Further, due to its excellent display quality, active matrix type liquid crystal display devices have been put on the market for portable terminals, liquid crystal televisions, projectors, computers and the like. In the active matrix display method, a TFT (thin film transistor) or a metal insulator metal (MIM) is used for each pixel, and a high voltage holding ratio is emphasized in this method. In addition, in order to obtain a wider viewing angle characteristic, a super TFT [Asia Display '95 Diges
t, p. 707 1995] by Kondo et al.
(Hereinafter, these active matrix display type liquid crystal display elements are collectively referred to as TFT-LCD.) To cope with such a display element, a new liquid crystal compound or liquid crystal composition such as the one disclosed in 233626,
A proposal such as Japanese Patent Publication No. 4-501575 has been made.

[0007] As a liquid crystal material to be used for a TFT-LCD using a polysilicon technology, which has recently attracted attention, a liquid crystal material that is resistant to contamination, including higher characteristics in terms of voltage holding ratio, and has a lower driving voltage. A liquid crystal material exhibiting faster response and a liquid crystal material having a birefringence of 0.10 to 0.15 are required. Further, for the purpose of improving the yield, a demand for a liquid crystal material which causes less display defects and a liquid crystal material which can stably exhibit a higher pretilt angle and the like has been further differentiated.

As described in detail above, demands for liquid crystal display elements include finer and higher-density display capacity, faster response speed to driving voltage and environmental temperature, and higher chemical and electrical stability. Lower driving voltage, higher gradation, higher contrast with respect to the use environment temperature and the viewing angle, and the like. For this reason, it has nematic properties over a wide temperature range, maintains a nematic phase for a long time at low temperature storage,
The desired drive voltage, with lower viscosity, which can improve the responsiveness,
In particular, research and development of liquid crystal materials that can achieve lower driving voltages are still being conducted. The design of the birefringence, dielectric anisotropy and elastic constant and their temperature dependence, the wavelength dependence of the birefringence and the frequency dependence of the dielectric anisotropy corresponding to the duty number are also improved. It is attracting attention.

As the compounds related to the general formula (I-1) of the present invention, the compounds of the following general formulas (a1-1) to (a1-8) are described, for example, Helvetica Chimica in the general formula (a1-1) Acta
vol.68 p.1406 (1985), Mol.Cryst.Liq.Cryst.vol.206
p.187 (1991), Liq. Cryst. vol.15 p.123 (1993), and in the general formula (a1-2), JP-A-4-504571 (1992), U.S. Pat. a1-3) Mol.Cr
yst.Liq.Cryst.vol.206p.187 (1991), Liq.Cryst.vol.
15 p.123 (1993), JP-A-1-160924 (1989), German Patent No. 3837208A (1998), U.S. Patent No. 50842
04 (1992), and in the general formula (a1-4), Mol.Cryst.Liq.Cryst.
vol. 37 p. 249 (1976), U.S. Pat.
5), in the general formula (a1-5), Mol.Cryst.Liq.Cryst. Vol.53
p.147 (1979), JP-A-53-22882 (1978), and in the general formula (a1-6), JP-A-54-157541 (1979), U.S. Pat.
B (1979) and Mol.Cryst.Liq.Cryst.v in the general formula (a1-7)
ol. 37 p. 249 (1976), and in the general formula (a1-8), British Patent No. 2
271771A (1994).

[0010]

Embedded image (In the formula, R ⁰ represents an alkyl group, an alkoxy group, an alkanoyloxy group, X ⁰ represents CN, F, etc., and Z ⁰ represents R ⁰ , CN, and k ⁰ represent 1 and 2.)

However, for example, Japanese Patent Laid-Open Publication No. 1-1609
24 (1989), German Patent No. 3837208A (1998), and British Patent No. 2271771A (1994) have not been patented. Little is known. More specifically, for compounds, the phase transition temperatures of the compounds represented by general formulas (a1-1) to (a1-5) and (a1-7), the birefringence of some of the compounds, and the dielectric anisotropy Or, the transition enthalpy is reported, but the elastic constant and viscosity are not known. Further, in the composition, a description of a combination of general compounds with respect to the compounds of general formulas (a1-1) to (a1-8) or a combination with general formulas (a1-9) to (a1-11) Or the general formula (a1-
9) to (a1-16) are described, but specific examples are hardly found. In addition, no application example using a liquid crystal composition, for example, a specific example relating to a liquid crystal display element or device has been found.

As the compounds related to the general formula (I-2) of the present invention, the compounds of the following general formulas (a2-1) to (a2-2) are described. 2217771
A (1994) and Mol.Cryst.Liq.Cryst.v in the general formula (a2-2)
ol. 206 p. 187 (1991), Liq. Cryst. vol. 15 p. 123 (199
3), JP-A-1-160924 (1989), German Patent 3837
208A (1989); U.S. Patent No. 5,084,204A (1992);
Mol. Cryst. Liq. Cryst. Vol. 37 p. 249 (1976).

[0013]

Embedded image (Wherein R ⁰ is an alkyl group, etc., X ⁰ is CN, F, etc., L ⁰ is F
Z ⁰ is a single bond or the like; ring D ⁰ is cyclohexylene or the like;
k ⁰ , m, and n represent 0, a natural number. )

However, for example, Japanese Patent Laid-Open Publication No. 1-1609
24 (1989), German Patent No. 3837208A (1998), and British Patent No. 2271771A (1994) have not been patented, and the technology relating to the compounds represented by the general formulas (a2-1) to (a2-2) is as follows. Little is known. More specifically, in the compounds, the phase transition temperature, dielectric anisotropy, birefringence, elastic constant and viscosity of the compounds represented by the general formulas (a2-1) to (a2-2) are not known. In addition, although a description of general advantages can be seen, on the other hand, for example, the disadvantage of the viscosity of the compounds included in these documents is that Liq.Cryst.vol.15 p.12
3 (1993) states that the narrow liquid crystallinity of the compound
q.Cryst. vol.261 p.79 (1995) describes that the compound of the general formula (a-2) makes the dielectric anisotropy of a liquid crystal mixture negative, as described in JP-A-1-160924 (1989). In this situation, it is far from technical reports that can be easily used by those skilled in the art, for example, because their physical properties conflict with each other.
Further, in the composition, description of a combination of general compounds such as a combination with the compounds of the general formulas (a2-3) to (a2-7) is seen, but no specific example is found. . Therefore, further, an application example using the liquid crystal composition,
For example, no specific examples relating to liquid crystal display elements and devices have been found.

As the compounds related to the general formula (I-3) of the present invention, the description of the compounds of the following general formulas (a3-1) to (a3-15) is recognized. For example, in the general formula (a3-1), Mol.Crys
t.Liq.Cryst. vol.37 p.249 (1976), general formula (a3-2) ~
(a3-4) Helvetica Chimica Acta vol.64 Fasc.6 p.1
847 (1985) -Nr. 176, Helvetica Chimica Acta vol. 68 p.
1406 (1985), Mol.Cryst.Liq.Cryst.vol.206 p.187 (199
1), Liq. Cryst. Vol.15 p.123 (1993), general formula (a3-5)
In JP-A-61-282345 (1986), the general formula (a3-6)
~ (A3-10): Helvetica Chimica Acta vol.68 p.1406
(1985), Tokuhei 4-504571 (1992), Patent No. 266
No. 7577, U.S. Pat. No. 5,252,253 (1993), British Patent Publication No. 2244710A (1992), European Patent No. 45350
3B1 (1995) and Mol.Cryst.Liq.Crys in the general formula (a3-11)
t.vol.206 p.187 (1991), Liq.Cryst.vol.15 p.123 (199
3), JP-A-1-160924 (1989), German Patent 3837
208A (1989); U.S. Patent No. 5,084,204A (1992);
In the general formula (a3-12), JP-A-1-160924 (1989)
German Patent 3837208A (1989), US Patent No. 5084
204A (1992), Mol.Cryst.Liq.Cryst.vol.261 p.79
(1995) and the general formulas (a3-13) to (a3-15)
1771A (1994).

[0016]

Embedded image (Wherein R ⁰ is an alkyl group, an alkoxy group, etc., and X ⁰ is C
N ⁰ , F etc., Z ⁰ represents a single bond, etc., ring D ⁰ represents cyclohexylene, etc., and k ⁰ represents ⁰ , 1, 2. )

However, for example, Japanese Patent Laid-Open Publication No. 1-1609
24 (1989), German Patent No. 3837208A (1998) and British Patent No. 2271771A (1994) have not been patented, and the technology relating to the compounds of the general formulas (a3-1) to (a3-15) Little is known. More specifically, in the compounds, the phase transition temperatures of the compounds of the general formulas (a3-1) to (a3-12), a very small part of the compounds, specifically, (a3-1)
The dielectric anisotropy of the compound, (a3-2), the birefringence of the compound of (a3-3), the birefringence of the compound of (a3-5), the dielectric anisotropy, (a
Only the birefringence of the compound of 3-11), the birefringence of (a3-12), the dielectric anisotropy or the enthalpy of transition are reported, but the elastic constant and viscosity are not known. Also,
Although a description of general advantages can be seen, for example, the disadvantage of the viscosity of the compounds of general formulas (a3-2) and (a3-3) is that Liq.Cryst.vol.15 p.123 (1993 ), The general formula (a3-1
Mol.Cryst.Liq.Cryst.
vol.261 p.79 (1995), it is disclosed in JP-A-1-160924 (1989) that the compound of the general formula (a3-11) or (a3-12) makes the dielectric anisotropy of a liquid crystal mixture negative. It is described, and its physical properties are inconsistent with each other and the situation is far from a technical report that can be easily used by those skilled in the art. Further, in the composition, the compounds of the general formulas (a3-2) to (a3-4) are combined with the general formula (a3-18), and the compounds of the general formula (a3-5) are mixed with the general formula (a3-5). -17), general formulas (a3-6) to (a3-10)
Are described with respect to the compounds of the general formulas (a3-16) to (a3-18), but specific examples thereof are hardly found. Therefore, there is no further application using the liquid crystal composition, for example, a specific example relating to a liquid crystal display element or device.

As the compounds related to the general formula (I-4) of the present invention, the compounds of the following general formulas (a4-1) to (a4-2) are described. Showa 57-13092
91 (1982), German Patent 3150312A (1982), U.S. Patent No. 4,432,885A (1984), British Patent 2090593.
A (1982), and in the general formula (a4-2), the German patent 156258A
(1982), U.S. Pat.
7-54130 (1982).

[0019]

Embedded image (In the formula, R ⁰ represents an alkyl group or the like.)

However, the description of these techniques has not been shown to relate to the required characteristics currently required. The knowledge of the compound or composition is about the temperature range of the liquid crystal phase, and the dielectric anisotropy, birefringence, elastic constant and viscosity are not known. In addition, although a description of general advantages can be seen, STN-
There is no technical knowledge about LCD and TFT-LCD. Further, in the composition, for example, JP-A-4-502781 (1992) and WO91-05029
(1991), U.S. Pat. No. 5,487,845, the general description of which is rarely found. Therefore, there is hardly any application example using a liquid crystal composition, for example, a specific example relating to a liquid crystal display element or device.

As the compound related to the general formula (I-5) of the present invention, a compound represented by the following general formula (a5-1) is described by Helvet.
ica Chimica Acta vol.65, Fasc.4 p.1318 (1982) -Nr.125
Is recognized.

[0022]

Embedded image (In the formula, R ⁰ represents an alkyl group or the like.)

However, little is known about the technology relating to the required characteristics currently required. In detail, the dielectric anisotropy, birefringence, elastic constant and viscosity of the compound of the general formula (a5-1) are not known. Therefore, TN-LCD, STN-LCD that can be easily used by those skilled in the art
There is no technical knowledge on TFT and LCD. Further, in the composition, for example, Japanese Patent Publication No. 4-502781
(1992), WO 91-05029 (1991), U.S. Pat.
A general description can be found at 87845, but no specific embodiment can be found. Therefore, there is no further application using the liquid crystal composition, for example, a specific example relating to a liquid crystal display element or device.

In the present invention, the liquid crystal component A is represented by the general formulas (0-1) to (0-2) belonging to group A1 and the general formulas (I-1) to (I-5) belonging to group A2. One of the features of the present invention is that it is composed of a compound of the general formula appropriately selected from the following compounds. Such a nematic liquid crystal composition is not yet known.

[0025]

The present invention relates to a liquid crystal component A
Contains at least one or more compounds represented by general formulas (0-1) to (0-2) which are group A1 and general formulas (I-1) to (I-5) which are group A2. Nematic liquid crystal composition, more specifically, the general formula (0-
Compounds having condensed rings with the compounds of 1) to (0-2), specifically, naphthalene-2,6-diyl ring, 1,2,3,4
-Tetrahydronaphthalene-2,6-diyl ring, compound having decahydronaphthalene-2,6-diyl ring, and novel nematic liquid crystal composition containing a compound having a substituent in any of these rings Depending on the product, and further in combination with a compound other than the general formulas (0-1) to (0-2) and (I-1) to (I-5), the demand for the liquid crystal material as described above is solved or slightly reduced. However, it is intended to improve the characteristics of the liquid crystal display element as described above. For more information,
It is an object of the present invention to extend the operating temperature range of the liquid crystal display characteristics by improving low-temperature storage, reduce the drive voltage and improve the temperature change, and achieve or improve a relatively fast response to a predetermined drive voltage. Another object is to improve various display characteristics of MIM, TFT-LCD, and STN-LCD by using a liquid crystal material having a desired birefringence.

[0026]

According to the present invention, in order to solve the above-mentioned problems, a liquid crystal composition contains a liquid crystal component A comprising a compound selected from groups A1 and A2. (0-1)-(0-2), (I-1)-(I-
5) a compound represented by the formula:

Embedded image(Wherein 1 present in a naphthalene-2,6-diyl ring
One or more CH groups may be substituted with N,
Present in the decahydronaphthalene-2,6-diyl ring
One or two or more -CH_Two-Group is -CF_TwoReplaced with-
May be one or more of two or more
-CH_Two-CH_Two-Group is -CH_Two-O-, -CH = CH
-, -CH = CF-, -CF = CF-, -CH = N- or
May be substituted by -CF = N-, and is present in the ring.
One or two or more> CH-CH_Two-Group is> CH-
O-,> C = CH-,> C = CF-,> C = N- or>
N-CH_TwoAnd may be substituted in the ring.
> CH-CH <group is> CH-CF <,> CF-CF <
Or> C = C <, unsubstituted or substituted
At least one C in the substituted ring is substituted with Si.
May be R¹Are each independently 1 to 10 carbon atoms
An alkyl group or an alkenyl group having 2 to 10 carbon atoms
Wherein the alkyl group or the alkenyl group is unsubstituted or substituted.
One or more F, Cl, CN, CH as a substituent_Three
Or CF_ThreeAnd the alkyl group or the alkyl group
One or more CHs present in the alkenyl group_TwoBase
Means that O atoms are not directly bonded to each other,
May be substituted with O or COO,¹Are independent
F, Cl, CF_Three, OCF_Three, OCF_TwoH, OCF
H_Two, NCS or CN, X¹~ X^ThreeAre each independently
H, F, Cl, CF_Three, OCF_ThreeOr CN^ThreeIs
In addition, each independently CH_ThreeAnd W¹~ W⁶Are independent
H, F, Cl, CF_Three, OCF_ThreeOr CN, W^Four
Is also independently CH_ThreeAnd K¹~ K^FiveAre independent
A single bond, -COO-, -OCO-, -CH_TwoO-,
-OCH_Two-, -CH = CH-, -CF = CF-, -C
≡C-,-(CH_Two)_Two-,-(CH_Two)_Four-, -CH = CH-
(CH_Two)_Two-,-(CH_Two)_Two-CH = CH-, -CH = N
-, -CH = NN = CH- or -N (O) = N-
And ring A⁰Are each independently trans-1,4-cyclo
Xylene, 1,4-phenylene, 2 or 3-fluoro-
1,4-phenylene, 2,3-difluoro-1,4-phenyl
Phenylene, 3,5-difluoro-1,4-phenylene
Represents the ring A¹~ A^FourAre each independently 1,4-phenylene,
2 or 3-fluoro-1,4-phenylene, 2,3-di
Fluoro-1,4-phenylene, 3,5-difluoro-
1,4-phenylene, 2 or 3-chloro-1,4-fe
Nylene, 2,3-dichloro-1,4-phenylene, 3,
5-dichloro-1,4-phenylene, pyrimidine-2,
5-diyl, trans-1,4-cyclohexylene,
Lance-1,4-cyclohexenylene, trans-1,
3-dioxane-2,5-diyl, trans-1-sila
-1,4-cyclohexylene, trans-4-sila-
1,4-cyclohexylene, naphthalene-2,6-dii
1,2,3,4-tetrahydronaphthalene-2,
6-diyl or decahydronaphthalene-2,6-dii
Represents naphthalene-2,6-diyl and 1,2,2
3,4-tetrahydronaphthalene-2,6-diyl is
One or two F, Cl, CF as unsubstituted or substituted
_Three, OCF_ThreeOr CH_ThreeNaphthalene
-2,6-diyl ring, 1,2,3,4-tetrahydro
Naphthalene-2,6-diyl ring, decahydronaphthale
2,6-diyl ring, side-chain group R¹, Polar group Q¹, Linking group
K¹~ K^FiveAnd ring A⁰~ A^FourOne or more than one
A hydrogen atom may be replaced by a deuterium atom, and k¹~
k⁸Each independently represents 0 or 1, and k^Three+ K^FourIs 0 or
1 and k^Five+ K⁶+ K⁷+ K⁸Is 0, 1 or 2;
Compounds of the above general formulas (0-1) to (0-2) and (I-1) to (I-5)
The atoms that make up a product are
good. ) The general formulas (0-1) to (0-2), (I-1) to (I-
5) Dielectric constant of +2 or more as a liquid crystal component excluding the compound of 5)
A liquid crystal component B composed of a compound having anisotropy is used in an amount of 0 to 99.
Contains 9% by weight and has dielectric anisotropy of -10 to +2
A liquid crystal component C comprising a compound in an amount of 0 to 85% by weight;
The sum of the liquid crystal component B and the liquid crystal component C is 0 to 99.9% by weight.
To provide a nematic liquid crystal composition characterized by the following:
You. In the present invention, the liquid crystal component A satisfies the following condition.
Nematic liquid crystal group satisfying at least one of (1) to (62)
It can be a product. (1) A compound in which the liquid crystal component A is represented by the general formula (0-1)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-1)
Is a compound containing two or more kinds and represented by the general formula (I-2)
One or more compounds selected from the group consisting of
The content of the compound in the liquid crystal component A is 5 to 100% by weight.
%. (2) The compound in which the liquid crystal component A is represented by the general formula (0-1)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-1)
Is a compound containing two or more kinds and represented by the general formula (I-3)
One or more compounds selected from the group consisting of
The content of the compound in the liquid crystal component A is 5 to 100% by weight.
%. (3) The compound wherein the liquid crystal component A is represented by the general formula (0-1)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-1)
Is a compound containing two or more kinds and represented by the general formula (I-4)
One or more compounds selected from the group consisting of
The content of the compound in the liquid crystal component A is 5 to 100% by weight.
%. (4) The compound in which the liquid crystal component A is represented by the general formula (0-1)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-1)
Is a compound containing two or more kinds and represented by the general formula (I-5)
One or more compounds selected from the group consisting of
The content of the compound in the liquid crystal component A is 5 to 100% by weight.
%. (5) The compound in which the liquid crystal component A is represented by the general formula (0-1)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-2)
Is a compound containing two or more kinds and represented by the general formula (I-3)
One or more compounds selected from the group consisting of
The content of the compound in the liquid crystal component A is 5 to 100% by weight.
%. (6) The compound wherein the liquid crystal component A is represented by the general formula (0-1)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-2)
Is a compound containing two or more kinds and represented by the general formula (I-4)
One or more compounds selected from the group consisting of
The content of the compound in the liquid crystal component A is 5 to 100% by weight.
%. (7) The liquid crystal component A is a compound represented by the general formula (0-1)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-2)
Is a compound containing two or more kinds and represented by the general formula (I-5)
One or more compounds selected from the group consisting of
The content of the compound in the liquid crystal component A is 5 to 100% by weight.
%. (8) The compound wherein the liquid crystal component A is represented by the general formula (0-1)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-3)
Is a compound containing two or more kinds and represented by the general formula (I-4)
One or more compounds selected from the group consisting of
The content of the compound in the liquid crystal component A is 5 to 100% by weight.
%. (9) The compound in which the liquid crystal component A is represented by the general formula (0-1)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-3)
Is a compound containing two or more kinds and represented by the general formula (I-5)
One or more compounds selected from the group consisting of
The content of the compound in the liquid crystal component A is 5 to 100% by weight.
%. (10) The liquid crystal component A is a compound represented by the general formula (0-1)
Containing one or more compounds selected from
One compound selected from the compounds represented by formula (I-4)
Or a compound containing two or more kinds and represented by the general formula (I-5)
One or more compounds selected from the group consisting of
Content of the obtained compound in the liquid crystal component A is 5 to 100
%. (11) The liquid crystal component A is a compound represented by the general formula (0-1)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or a compound containing two or more kinds and represented by the general formula (I-2)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-3)
Contains two or more, and the liquid crystal component A of the selected compound
Content of 5 to 100% by weight. (12) The liquid crystal component A is a compound represented by the general formula (0-1)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or a compound containing two or more kinds and represented by the general formula (I-2)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-4)
Contains two or more, and the liquid crystal component A of the selected compound
Content of 5 to 100% by weight. (13) The liquid crystal component A is a compound represented by the general formula (0-1)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or a compound containing two or more kinds and represented by the general formula (I-2)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-5)
Contains two or more, and the liquid crystal component A of the selected compound
Content of 5 to 100% by weight. (14) The liquid crystal component A is a compound represented by the general formula (0-1)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or a compound containing two or more kinds and represented by the general formula (I-3)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-4)
Contains two or more, and the liquid crystal component A of the selected compound
Content of 5 to 100% by weight. (15) The liquid crystal component A is a compound represented by the general formula (0-1)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or a compound containing two or more kinds and represented by the general formula (I-3)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-5)
Contains two or more, and the liquid crystal component A of the selected compound
Content of 5 to 100% by weight. (16) The liquid crystal component A is a compound represented by the general formula (0-1)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or a compound containing two or more kinds and represented by the general formula (I-4)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-5)
Contains two or more, and the liquid crystal component A of the selected compound
Content of 5 to 100% by weight. (17) The liquid crystal component A is a compound represented by the general formula (0-1)
Containing one or more compounds selected from
One compound selected from the compounds represented by formula (I-2)
Or a compound containing two or more kinds and represented by the general formula (I-3)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-4)
Contains two or more, and the liquid crystal component A of the selected compound
Content of 5 to 100% by weight. (18) The liquid crystal component A is a compound represented by the general formula (0-1)
Containing one or more compounds selected from
One compound selected from the compounds represented by formula (I-2)
Or a compound containing two or more kinds and represented by the general formula (I-3)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-5)
Contains two or more, and the liquid crystal component A of the selected compound
Content of 5 to 100% by weight. (19) The liquid crystal component A is a compound represented by the general formula (0-1):
Containing one or more compounds selected from
One compound selected from the compounds represented by formula (I-2)
Or a compound containing two or more kinds and represented by the general formula (I-4)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-5)
Contains two or more, and the liquid crystal component A of the selected compound
Content of 5 to 100% by weight. (20) The liquid crystal component A is a compound represented by the general formula (0-1)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-3)
Or a compound containing two or more kinds and represented by the general formula (I-4)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-5)
Contains two or more, and the liquid crystal component A of the selected compound
Content of 5 to 100% by weight. (21) The liquid crystal component A is a compound represented by the general formula (0-1)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or a compound containing two or more kinds and represented by the general formula (I-2)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-3)
Is a compound containing two or more kinds and represented by the general formula (I-4)
One or more compounds selected from the group consisting of
The content of the compound in the liquid crystal component A is 5 to 100% by weight.
%. (22) The liquid crystal component A is a compound represented by the general formula (0-1)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or a compound containing two or more kinds and represented by the general formula (I-2)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-3)
Is a compound containing two or more kinds and represented by the general formula (I-5)
One or more compounds selected from the group consisting of
The content of the compound in the liquid crystal component A is 5 to 100% by weight.
%. (23) The liquid crystal component A is a compound represented by the general formula (0-1)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or a compound containing two or more kinds and represented by the general formula (I-2)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-4)
Is a compound containing two or more kinds and represented by the general formula (I-5)
One or more compounds selected from the group consisting of
The content of the compound in the liquid crystal component A is 5 to 100% by weight.
%. (24) The liquid crystal component A is a compound represented by the general formula (0-1)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or a compound containing two or more kinds and represented by the general formula (I-3)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-4)
Is a compound containing two or more kinds and represented by the general formula (I-5)
One or more compounds selected from the group consisting of
The content of the compound in the liquid crystal component A is 5 to 100% by weight.
%. (25) The liquid crystal component A is a compound represented by the general formula (0-1):
Containing one or more compounds selected from
One compound selected from the compounds represented by formula (I-2)
Or a compound containing two or more kinds and represented by the general formula (I-3)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-4)
Is a compound containing two or more kinds and represented by the general formula (I-5)
One or more compounds selected from the group consisting of
The content of the compound in the liquid crystal component A is 5 to 100% by weight.
%. (26) The liquid crystal component A is a compound represented by the general formula (0-1)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or a compound containing two or more kinds and represented by the general formula (I-2)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-3)
Is a compound containing two or more kinds and represented by the general formula (I-4)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-5)
Contains two or more, and the liquid crystal component A of the selected compound
Content by weight is 100% by weight. (27) The liquid crystal component A is a compound represented by the general formula (0-1)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or the liquid crystal component of the selected compound containing two or more kinds
The content in A is 5 to 100% by weight. (28) The liquid crystal component A is a compound represented by the general formula (0-1)
Containing one or more compounds selected from
One compound selected from the compounds represented by formula (I-2)
Or the liquid crystal component of the selected compound containing two or more kinds
The content in A is 5 to 100% by weight. (29) The liquid crystal component A is a compound represented by the general formula (0-1)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-3)
Or the liquid crystal component of the selected compound containing two or more kinds
The content in A is 5 to 100% by weight. (30) The liquid crystal component A is a compound represented by the general formula (0-1):
Containing one or more compounds selected from
One compound selected from the compounds represented by formula (I-4)
Or the liquid crystal component of the selected compound containing two or more kinds
The content in A is 5 to 100% by weight. (31) The liquid crystal component A is a compound represented by the general formula (0-1)
Containing one or more compounds selected from
One compound selected from the compounds represented by formula (I-5)
Or the liquid crystal component of the selected compound containing two or more kinds
The content in A is 5 to 100% by weight. (32) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or a compound containing two or more kinds and represented by the general formula (I-2)
One or more compounds selected from the group consisting of
Content of the obtained compound in the liquid crystal component A is 5 to 100
%. (33) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or a compound containing two or more kinds and represented by the general formula (I-3)
One or more compounds selected from the group consisting of
Content of the obtained compound in the liquid crystal component A is 5 to 100
%. (34) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or a compound containing two or more kinds and represented by the general formula (I-4)
One or more compounds selected from the group consisting of
Content of the obtained compound in the liquid crystal component A is 5 to 100
%. (35) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or a compound containing two or more kinds and represented by the general formula (I-5)
One or more compounds selected from the group consisting of
Content of the obtained compound in the liquid crystal component A is 5 to 100
%. (36) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by formula (I-2)
Or a compound containing two or more kinds and represented by the general formula (I-3)
One or more compounds selected from the group consisting of
Content of the obtained compound in the liquid crystal component A is 5 to 100
%. (37) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by formula (I-2)
Or a compound containing two or more kinds and represented by the general formula (I-4)
One or more compounds selected from the group consisting of
Content of the obtained compound in the liquid crystal component A is 5 to 100
%. (38) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by formula (I-2)
Or a compound containing two or more kinds and represented by the general formula (I-5)
One or more compounds selected from the group consisting of
Content of the obtained compound in the liquid crystal component A is 5 to 100
%. (39) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-3)
Or a compound containing two or more kinds and represented by the general formula (I-4)
One or more compounds selected from the group consisting of
Content of the obtained compound in the liquid crystal component A is 5 to 100
%. (40) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-3)
Or a compound containing two or more kinds and represented by the general formula (I-5)
One or more compounds selected from the group consisting of
Content of the obtained compound in the liquid crystal component A is 5 to 100
%. (41) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by formula (I-4)
Or a compound containing two or more kinds and represented by the general formula (I-5)
One or more compounds selected from the group consisting of
Content of the obtained compound in the liquid crystal component A is 5 to 100
%. (42) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or a compound containing two or more kinds and represented by the general formula (I-2)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-3)
Contains two or more, and the liquid crystal component A of the selected compound
Content of 5 to 100% by weight. (43) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or a compound containing two or more kinds and represented by the general formula (I-2)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-4)
Contains two or more, and the liquid crystal component A of the selected compound
Content of 5 to 100% by weight. (44) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or a compound containing two or more kinds and represented by the general formula (I-2)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-5)
Contains two or more, and the liquid crystal component A of the selected compound
Content of 5 to 100% by weight. (45) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or a compound containing two or more kinds and represented by the general formula (I-3)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-4)
Contains two or more, and the liquid crystal component A of the selected compound
Content of 5 to 100% by weight. (46) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or a compound containing two or more kinds and represented by the general formula (I-3)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-5)
Contains two or more, and the liquid crystal component A of the selected compound
Content of 5 to 100% by weight. (47) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or a compound containing two or more kinds and represented by the general formula (I-4)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-5)
Contains two or more, and the liquid crystal component A of the selected compound
Content of 5 to 100% by weight. (48) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by formula (I-2)
Or a compound containing two or more kinds and represented by the general formula (I-3)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-4)
Contains two or more, and the liquid crystal component A of the selected compound
Content of 5 to 100% by weight. (49) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by formula (I-2)
Or a compound containing two or more kinds and represented by the general formula (I-3)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-5)
Contains two or more, and the liquid crystal component A of the selected compound
Content of 5 to 100% by weight. (50) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by formula (I-2)
Or a compound containing two or more kinds and represented by the general formula (I-4)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-5)
Contains two or more, and the liquid crystal component A of the selected compound
Content of 5 to 100% by weight. (51) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-3)
Or a compound containing two or more kinds and represented by the general formula (I-4)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-5)
Contains two or more, and the liquid crystal component A of the selected compound
Content of 5 to 100% by weight. (52) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or a compound containing two or more kinds and represented by the general formula (I-2)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-3)
Is a compound containing two or more kinds and represented by the general formula (I-4)
One or more compounds selected from the group consisting of
The content of the compound in the liquid crystal component A is 5 to 100% by weight.
%. (53) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or a compound containing two or more kinds and represented by the general formula (I-2)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-3)
Is a compound containing two or more kinds and represented by the general formula (I-5)
One or more compounds selected from the group consisting of
The content of the compound in the liquid crystal component A is 5 to 100% by weight.
%. (54) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or a compound containing two or more kinds and represented by the general formula (I-2)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-4)
Is a compound containing two or more kinds and represented by the general formula (I-5)
One or more compounds selected from the group consisting of
The content of the compound in the liquid crystal component A is 5 to 100% by weight.
%. (55) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or a compound containing two or more kinds and represented by the general formula (I-3)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-4)
Is a compound containing two or more kinds and represented by the general formula (I-5)
One or more compounds selected from the group consisting of
The content of the compound in the liquid crystal component A is 5 to 100% by weight.
%. (56) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by formula (I-2)
Or a compound containing two or more kinds and represented by the general formula (I-3)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-4)
Is a compound containing two or more kinds and represented by the general formula (I-5)
One or more compounds selected from the group consisting of
The content of the compound in the liquid crystal component A is 5 to 100% by weight.
%. (57) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or a compound containing two or more kinds and represented by the general formula (I-2)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-3)
Is a compound containing two or more kinds and represented by the general formula (I-4)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-5)
Contains two or more, and the liquid crystal component A of the selected compound
Content by weight is 100% by weight. (58) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or the liquid crystal component of the selected compound containing two or more kinds
The content in A is 5 to 100% by weight. (59) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by formula (I-2)
Or the liquid crystal component of the selected compound containing two or more kinds
The content in A is 5 to 100% by weight. (60) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-3)
Or the liquid crystal component of the selected compound containing two or more kinds
The content in A is 5 to 100% by weight. (61) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by formula (I-4)
Or the liquid crystal component of the selected compound containing two or more kinds
The content in A is 5 to 100% by weight. (62) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by formula (I-5)
Or the liquid crystal component of the selected compound containing two or more kinds
The content in A is 5 to 100% by weight. In the present invention, the liquid crystal component A has the following small group (0-ai)
One or more of (I-aviii) or two or more subgroups
Containing 1 to 20 compounds selected from the group consisting of
Nematic liquid crystal composition having a content of 10 to 100% by weight
Things. That is, the general formulas (0-1) to
In (0-2), (0-ai) R¹Has 2 to 7 carbon atoms.
A compound which is a alkyl group or an alkenyl group, (0-aii) Q¹
Is F, Cl, CF_Three, OCF_Three, OCF_TwoH or CN
Compound (0-aiii) K¹~ K^TwoIs a single bond,-(CH_Two)
_Two-, -COO- or -C≡C-, (0-ai
v) Ring A⁰Is trans-1,4-cyclohexylene, 1,
4-phenylene, 3-fluoro-1,4-phenylene or
Is 3,5-difluoro-1,4-phenylene
Thing, (0-avi) W¹~ W^TwoIs H, F, Cl, CF_ThreeOr OC
F_ThreeA compound which is (0-avii) X¹Is H, F, Cl, CF_Three
Or OCF_ThreeA compound that is The general formulas (I-1) to (I-
5) In (I-ai) R¹Is alkyl having 2 to 7 carbon atoms
(I-aii) Q is a compound which is a benzyl group or an alkenyl group.¹But
F, Cl, CF_Three, OCF_Three, OCF_TwoH or CN
Compound, (I-aiii) K¹~ K^FiveIs a single bond,-(CH_Two)_Two−,
-COO- or -C≡C-, a compound (I-aiv) ring
A¹~ A^FourIs trans-1,4-cyclohexylene, 1,
4-phenylene, 3-fluoro-1,4-phenylene or
Is 3,5-difluoro-1,4-phenylene
Compound, (I-av) naphthalene-2,6-diyl ring, 1,2,2
3,4-tetrahydronaphthalene-2,6-diyl
Ring, decahydronaphthalene-2,6-diyl ring, side chain
Group R¹, Polar group Q¹, Linking group K¹~ K^FiveAnd ring A¹~ A^FourExist
Replaces one or more existing hydrogen atoms with deuterium atoms
Compound. Formulas (I-1) to (I-3) and (I-5)
Then, (I-avi) W¹~ W^ThreeIs H, F, Cl, CF_ThreeOr
OCF_ThreeA compound that is The general formulas (I-2) to (I-4)
And (I-avii) X¹, X^TwoIs H, F, Cl, CF_ThreeOr O
CF_ThreeA compound that is (I-aviii) X^ThreeIs CH_ThreeBase
Compound. In the present invention, the liquid crystal component A has the following small group:
One or two or more of (0-bi) to (I-bxi)
Containing 1 to 20 compounds selected from the subgroup
Nematic liquid crystal having a compound content of 5 to 100% by weight
It can be a composition. That is, in general formula (0-1)
Where R¹Is an alkyl group having 2 to 7 carbon atoms or alk
A phenyl group,¹Is F, Cl, CF_Three, OCF_ThreeOr
CN and (0-bi) k¹= 0 and K¹Is a single bond,-
(CH_Two)_Two-, -COO- or -C≡C-,
(0-bii) k¹= 1 and K¹, K^TwoIs a single bond,-(C
H_Two)_Two-, -COO- or -C≡C-. one
In general formula (0-2), R¹Is alkyl having 2 to 7 carbon atoms
Or an alkenyl group;¹Is F, Cl, CF_Three,
OCF_ThreeOr CN and X¹Is H, F, Cl, CF_ThreeOr
OCF_ThreeAnd W¹~ W^ThreeIs H, F, Cl, CF_ThreeOr O
CF_ThreeAnd (0-biii) k¹= 0 and K^TwoIs simple
If-(CH_Two)_Two-, -COO- or -C≡C-
Compound, (0-biv) k¹= 1 and the ring A⁰Is a transformer
1,4-cyclohexylene, 1,4-phenylene, 3-
Fluoro-1,4-phenylene, 3,5-difluoro-
1,4-phenylene, K¹, K^TwoIs a single bond,-(C
H_Two)_Two-, -COO- or -C≡C-. one
In the general formula (I-1), R¹Is alkyl having 2 to 7 carbon atoms
Or an alkenyl group;¹Is F, Cl, CF_Three,
OCF_ThreeOr CN, and (I-bi) k¹= K^Two= 0
Ring A¹Is trans-1,4-cyclohexylene,
1,4-phenylene, 3-fluoro-1,4-phenylene
, 3,5-difluoro-1,4-phenylene, naphtha
Len-2,6-diyl, 1,2,3,4-tetrahide
Lonaphthalene-2,6-diyl or decahydronaphtha
Len-2,6-diyl, K¹Is a single bond,-(CH_Two)
_Two-, -COO- or -C≡C-, (I-bi
i) k¹= 1, k^Two= 0, ring A¹, A^TwoIs a transformer
1,4-cyclohexylene, 1,4-phenylene, 3-
Fluoro-1,4-phenylene, 3,5-difluoro-
1,4-phenylene, naphthalene-2,6-diyl,
1,2,3,4-tetrahydronaphthalene-2,6-
Diyl or decahydronaphthalene-2,6-diyl
Yes, K¹, K^TwoIs a single bond,-(CH_Two)_Two-, -COO- or
Is a compound wherein -C≡C-. In the general formula (I-2),
R¹Is an alkyl or alkenyl group having 2 to 7 carbon atoms
And Q¹Is F, Cl, CF_Three, OCF_ThreeOr CN
, X¹, X^TwoIs H, F, Cl, CF_ThreeOr OCF_ThreeIn
, W¹~ W^ThreeIs H, F, Cl, CF_ThreeOr OCF_ThreeIn
(I-biii) k^Three= K^Four= 0, ring A¹Is a transformer
-1,4-cyclohexylene, 1,4-phenylene, 3
-Fluoro-1,4-phenylene or 3,5-difluoro
B-1,4-phenylene;¹, K^FourIs a single bond,-
(CH_Two)_Two-, -COO- or -C≡C-.
In the general formula (I-3), R¹Is an alkyl having 2 to 7 carbon atoms
A kill group or an alkenyl group,¹Is F, Cl, C
F_Three, OCF_ThreeOr CN and X¹, X^TwoIs H, F, C
1, CF_ThreeOr OCF_ThreeAnd W¹~ W^ThreeIs H, F, C
1, CF_ThreeOr OCF_ThreeAnd (I-biv) k¹= K^Two= 0
And K^ThreeIs a single bond, -COO- or -C≡C-
Compound (I-bv) k¹= 1, k^Two= 0, ring A¹But
1,4-phenylene, 3-fluoro-1,4-phenylene
Or 3,5-difluoro-1,4-phenylene
, K ¹, K^ThreeIs a single bond, -COO- or -C≡C-
Compound. In the general formula (I-4), R¹Has 2 carbon atoms
To 7 alkyl groups or alkenyl groups,¹Is F,
Cl, CF_Three, OCF_ThreeOr CN and X¹, X^TwoIs H,
F, Cl, CF_ThreeOr OCF_ThreeAnd (I-bvi) k^Five= K
⁶= K⁷= K⁸= 0 and K^FiveIs a single bond,-(CH_Two)_Two−,
− (CH_Two)_Four-, -COO- or -C≡C-
Thing, (I-bvii) k^Five= 1, k⁶= K⁷= K⁸= 0 and the ring
A¹Is trans-1,4-cyclohexylene, 1,4-
Phenylene, 3-fluoro-1,4-phenylene or
3,5-difluoro-1,4-phenylene,
K¹, K^FiveIs a single bond,-(CH_Two)_Two-, -COO- or -C
A compound of ≡C—, (I-bviii) k⁷= 1, k^Five= K⁶=
k⁸= 0 and the ring A^ThreeTo trans-1,4-cyclo
Xylene, 1,4-phenylene, 3-fluoro-1,4
-Phenylene or 3,5-difluoro-1,4-phenylene
Len and K^Three, K^FiveIs a single bond,-(CH_Two)_Two-, -CO
A compound wherein O- or -C≡C-, (I-bix) decahai
When the dronaphthalene-2,6-diyl ring is -CF_Two−, −
CH_Two-O-, -CH = CH-, -CH = CF-, -C
F = CF-, -CH = N-, -CF = N-,> CH-O
-,> C = CH-,> C = CF-,> C = N-,> N-
CH_Two−,> CH-CF <,> CF-CF <,> C = C
<Having at least one substituent among the substituents of Si
Compound. In the general formula (I-5), R¹Is the number of carbon atoms
2-7 alkyl or alkenyl groups,¹But
F, Cl, CF_Three, OCF_ThreeOr CN and W¹, W^TwoBut
H, F, Cl, CF_ThreeOr OCF_ThreeAnd (I-bx) k¹=
k^Two= 0, ring A¹Is trans-1,4-cyclohexyl
Silene, 1,4-phenylene, 3-fluoro-1,4-
Phenylene, 3,5-difluoro-1,4-phenylene
, Naphthalene-2,6-diyl, 1,2,3,4-te
Trahydronaphthalene-2,6-diyl or decahigh
Dronaphthalene-2,6-diyl, K¹Is simple
If-(CH_Two)_Two-,-(CH_Two)_Four-Or -COO-
Compound, (I-bxi) k¹= 1, k^Two= 0, ring A¹, A
^TwoIs trans-1,4-cyclohexylene, 1,4-phenyl
Phenylene, 3-fluoro-1,4-phenylene, 3,5
-Difluoro-1,4-phenylene, naphthalene-2,
6-diyl, 1,2,3,4-tetrahydronaphthale
-2,6-diyl or decahydronaphthalene-2,
6-diyl, K¹, K^TwoIs a single bond,-(CH_Two)_Two−,
− (CH_Two)_Four-Or -COO-.

The liquid crystal component B according to the present invention has the general formula (II)
-1) to (II-4)

Embedded image(Where R¹, Q¹, W¹~ W^FourAre (0-1) to (0-2), (I-
1) to (I-5), and¹, Y^TwoIs each
Independently H, F, Cl or OCF_ThreeAnd V is CH
Or N, P¹~ P^ThreeAre each independently a single bond, -CO
O-, -OCO-, -CH_TwoO-, -OCH_Two-,-(C
H_Two)_Two-,-(CH_Two)_Four-, -CH = CH- (CH_Two)_Two−,
− (CH _Two)_Two-CH = CH-, -CH = N-, -CH = N
-N = CH- or -N (O) = N-,¹, P^ThreeHama
Each independently represents -CH = CH-, -CF = CF- or-
May be C−C-, a ring B¹~ B^ThreeEach independently
Lance-1,4-cyclohexylene, trans-1,4
-Cyclohexenylene, trans-1,3-dioxane
-2,5-diyl, trans-1-sila-1,4-sic
Rohexylene or trans-4-sila-1,4-cyclo
Represents hexylene, ring B^ThreeIs also 1,4-phenylene,
2 or 3-fluoro-1,4-phenylene, 3,5-di
Fluoro-1,4-phenylene, 2 or 3-chloro-
1,4-phenylene, 2,3-dichloro-1,4-fe
Nylene, 3,5-dichloro-1,4-phenylene
And the side group R¹, Polar group Q¹, Linking group P¹~ P^Threeas well as
Ring B¹~ B^ThreeOne or more hydrogen atoms present in
May be substituted with a hydrogen atom, p¹~ P^ThreeAre independent
Represents 0 or 1, and p^Two+ P^ThreeIs 0 or 1;
The atoms constituting the compounds of the formulas (II-1) to (II-4)
May be substituted by a isotope atom. Compound represented by)
Contains one or more compounds selected from the group
Can be.

The liquid crystal component C is represented by the following general formula (III-1):
(III-4)

Embedded image(Where W¹~ W^ThreeAre (0-1) to (0-2), (I-1) to (I-
5) The same as described in (II-1) to (II-4),
R^Two, R^ThreeIs each independently an alkyl having 1 to 10 carbon atoms
Group, alkoxy group or alkenyl having 2 to 10 carbon atoms
A alkenyloxy group, the alkyl group,
A oxy group, the alkenyl group or the alkenyloxy group
One or more F, Cl, unsubstituted or substituted
CN, CH_ThreeOr CF_ThreeAnd or or
An alkyl group, the alkoxy group, the alkenyl group, or the
One or more CHs present in the alkenyloxy group
_TwoThe group is such that the O atoms are not directly bonded to each other:
May be substituted with O, CO or COO;¹~ Z^Three
Are each independently H, F, Cl, CF_Three, OCF_ThreeOr CN
And Z^ThreeIs also each independently -CH_ThreeMay be
M¹~ M^ThreeAre each independently a single bond, -COO-, -O
CO-, -CH_TwoO-, -OCH_Two-,-(CH_Two)_Two−, −
(CH_Two)_Four-, -CH = CH- (CH_Two)_Two-,-(CH _Two)_Two−
CH = CH-, -CH = N-, -CH = NN-CH =
Or -N (O) = N-, and M¹, M^ThreeAre also independent
Is -CH = CH-, -CF = CF- or -C≡C-
Or ring C¹~ C^ThreeAre independently transformer-1,
4-cyclohexylene, trans-1,4-cyclohexyl
Senylene, trans-1,3-dioxane-2,5-di
Yl, trans-1-sila-1,4-cyclohexyl
Trans-4-sila-1,4-cyclohexylene,
Naphthalene-2,6-diyl, 1,2,3,4-tetra
Hydronaphthalene-2,6-diyl or decahydro
Represents naphthalene-2,6-diyl;
6-diyl and 1,2,3,4-tetrahydronaphtha
Ren-2,6-diyl may be unsubstituted or substituted as one or more.
Is two F, Cl, CF_Three, OCF_ThreeOr CH_ThreeHaving
Can ring C¹, C^ThreeIs also 1,4-phenylene, 2
Or 3-fluoro-1,4-phenylene, 2,3-diph
Fluoro-1,4-phenylene, 3,5-difluoro-
1,4-phenylene, 2 or 3-chloro-1,4-fe
Nylene, 2,3-dichloro-1,4-phenylene, 3,
5-dichloro-1,4-phenylene may be
Chain group R^Two, R^Three, Linking group M¹~ M^ThreeAnd ring C¹~ C^ThreeExists in
One or more hydrogen atoms are replaced by deuterium atoms
May be¹~ M^ThreeRepresents 0 or 1 each independently
Then m^Two+ M^ThreeIs 0 or 1, and has the general formula (III-1)
The atoms constituting compounds (III-4) are the isotope atoms
May be substituted. )
Can be contained. In the present invention
A core structure in which the liquid crystal composition has four six-membered rings;
A liquid crystal phase-isotropic liquid phase transition of the compound
One or more compounds having a transfer temperature of 100 ° C or higher
A nematic liquid crystal composition can be obtained.
Further, the liquid crystal composition has a dielectric anisotropy of 2 to 40.
And a birefringence of 0.02 to 0.40,
A nematic phase-isotropic liquid phase transition temperature of 80 ° C.,
-200 ° C to 0 ° C crystalline phase, smectic phase or glass
Nematic liquid crystal composition having a phase-nematic phase transition temperature
It can be. In addition, the liquid crystal composition has an induced helix.
Has an optically active group with a pitch of 0.5 to 1000 μm
Liquid crystal composition containing the compound
it can.

Further, the present invention provides an active matrix using the above nematic liquid crystal composition and a twisted liquid crystal composition.
Provided is a nematic or super twisted nematic liquid crystal display device.

[0030]

BEST MODE FOR CARRYING OUT THE INVENTION The liquid crystal composition of the present invention comprises a liquid crystal component A comprising compounds represented by general formulas (0-1) to (0-2) and (I-1) to (I-5). As an essential component. The compounds represented by the general formulas (I-1) to (I-5) belonging to the group A2 include an unsubstituted or substituted naphthalene-2,6-diyl ring, a decahydronaphthalene-2,6-diyl ring, 1,2,3,4-tetrahydronaphthalene-2,6-
It is characterized by a molecular structure having a diyl ring as a partial structure.
The liquid crystal component A, which contains both the compound having this feature and the compounds represented by the general formulas (0-1) to (0-2) belonging to the group A1, becomes nematic when mixed with another liquid crystal compound or liquid crystal composition. The phase-isotropic liquid phase transition temperature is relatively good, has the effect of lowering the drive voltage without maintaining or deteriorating the responsiveness, and is excellent over conventional liquid crystal compositions with reduced drive voltage. Has characteristics. More specifically, it is characterized in that the saturation voltage is particularly reduced. The liquid crystal composition of the present invention has the general formulas (0-1) to (0-
2) containing 0 to 99.9% by weight of a liquid crystal component B comprising a compound having a dielectric anisotropy of +2 or more, containing a liquid crystal component A comprising a compound of (I-1) to (I-5); And -10 to +
Liquid crystal component C comprising a compound having a dielectric anisotropy of 2 is contained in an amount of 0 to 85% by weight, and the total of liquid crystal component B and liquid crystal component C is contained in an amount of 0 to 99.9% by weight. Has been found. Further, when the liquid crystal component A is mixed with the liquid crystal material of the liquid crystal component B and the liquid crystal component C, the solid phase or the smectic phase-nematic phase transition temperature is particularly lowered or the storage time at a low temperature is prolonged. For example, the display temperature range can be broadened.

In the present invention, naphthalene-2,
6-diyl ring, decahydronaphthalene-2,6-dii
Ring and 1,2,3,4-tetrahydronaphthalene-
The name of the 2,6-diyl ring is used unless otherwise specified.
And including both unsubstituted and substituted rings
Is defined as This definition applies to liquid crystal components A and C.
It is. The meaning of the substitution is defined as the meaning of naphthalene-2,6-diyl ring
Wherein one or more CH groups present in the ring are N
Substituted, decahydronaphthalene-2,6
-In the case of a diyl ring, one or more
-CH_Two-Group is -CF_Two-Substituted in the ring
One or more -CH_Two-CH _Two-Group is -CH_Two
-O-, -CH = CH-, -CH = CF-, -CF = C
F-, -CH = N- or -CF = N-
One or more> CH-CH present in the ring_Two
-Group is> CH_Two-O-,> C = CH-,> C = CF-,
> C = N- or> N-CH_TwoSubstituted with-in the ring
> CH-CH <group is> CH-CF <,> CF
-CF <or> C = C <
An unsubstituted ring of idronaphthalene-2,6-diyl ring or
At least one C in the substituted ring is substituted with Si;
And a naphthalene-2,6-diyl ring;
Decahydronaphthalene-2,6-diyl ring and 1,
2,3,4-tetrahydronaphthalene-2,6-dii
One or more hydrogen atoms present in the ring are deuterium
Including those substituted with atoms.

Similarly, the names of the alkyl group and the alkenyl group are defined to include both unsubstituted groups and substituted groups, unless otherwise specified. Further, the alkyl group and the alkenyl group may be linear or branched. This definition applies to the liquid crystal components A, B, C.

The present invention relates to compounds represented by the general formulas (0-1) to (0-2), (I-
As more preferred compounds of 1) to (I-5), compounds of the general formula (0-
11) to (0-22) and (I-11) to (I-52).

[0034]

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[0035]

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When the liquid crystal component A contains a compound represented by the general formula (0-1), one kind of a compound selected from the compounds represented by the general formula (0-11) or the general formula (0-12) is used. Or contains two or more kinds, or contains a compound represented by the general formula (0-11) and the general formula (0-12) in combination, and the content of the compound is 5 to 9;
It has been found that 9.9% by weight is preferable for obtaining the effects of the present invention.

When the liquid crystal component A contains a compound represented by the general formula (0-2), one compound selected from the compounds represented by the general formula (0-21) or the general formula (0-22) is used. Alternatively, it has been found that it is preferable that the content of the compound is 5 to 99.9% by weight in order to obtain the effect of the present invention.

When the liquid crystal component A contains a compound represented by the general formula (I-1), one compound selected from the compounds represented by the general formula (I-11) or (I-12) is used. Or contains two or more kinds, or contains a compound represented by the general formula (I-11) and the general formula (I-12) in combination, and the content of the compound is 5 to 9
It has been found that 9.9% by weight is preferable for obtaining the effects of the present invention.

When the liquid crystal component A contains a compound represented by the general formula (I-2), it contains one or more compounds selected from the compounds represented by the general formula (I-21), It has been found that a compound content of 5 to 99.9% by weight is preferable for obtaining the effects of the present invention.

When the liquid crystal component A contains a compound represented by the general formula (I-3), one compound selected from the compounds represented by the general formula (I-31) or (I-32) may be used. Or a compound represented by the general formula (I-31) and the compound represented by the general formula (I-32) in combination, and the content of the compound is 5 to 9
It has been found that 9.9% by weight is preferable for obtaining the effects of the present invention.

When the liquid crystal component A contains a compound represented by the general formula (I-4), it is selected from one, two or three of the general formulas (I-41) to (I-43). One or two or more compounds represented by the general formulas (I-41) to (I-43), and the content of the compound is 5 or more.
It has been found that the content of ９９99.9% by weight is preferable for obtaining the effects of the present invention.

When the liquid crystal component A contains a compound represented by the general formula (I-5), one compound selected from the compounds represented by the general formula (I-51) or (I-52) is used. Or two or a combination of the compounds represented by formulas (I-51) and (I-52), and the content of the compound is 5 to 99.
It has been found that 9% by weight is preferable for obtaining the effects of the present invention.

The present invention provides a compound represented by the general formula (0-
Compounds selected from one or two of the general formulas from 1) to (0-2) and general formulas (I-1) to (I-5) which are group A2
The liquid crystal component A can be composed of one, two, three or more compounds selected from the general formulas. In this case, a compound selected from the general formulas (0-11) to (0-22) and the general formulas (I-11), (I-12), (I-21) and (I-3)
1), (I-32), (I-41), (I-42), (I-43), (I-5
It is particularly preferred to combine compounds selected from 1) and (I-52).

From such a viewpoint, the general formulas (0-1) to (0-
2) and a more preferred form of the basic structure of the compounds represented by (I-1) to (I-5) are represented by the following general formula (0-11)
a) to (0-22as) and (I-11a) to (I-52bd).

[0045]

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[0046]

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[0047]

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[0048]

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[0049]

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[0050]

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[0051]

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[0052]

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[0053]

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[0054]

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[0055]

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[0056]

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[0057]

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[0058]

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[0059]

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[0060]

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[0061]

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[0062]

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[0063]

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[0064]

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[0065]

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[0066]

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[0067]

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[0068]

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[0069]

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[0070]

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[0071]

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[0072]

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[0073]

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[0074]

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[0075]

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[0076]

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[0077]

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[0078]

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[0079]

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[0080]

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[0081]

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[0082]

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[0083]

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[0084]

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[0085]

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[0086]

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[0087]

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[0088]

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[0089]

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[0090]

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[0091]

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More preferred forms of the formula (I-6) in the side chain group R ¹ are compounds represented by the following formulas (I-6a) to (I-6bc).

[0093]

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More preferred embodiments of the partial structural formula (I-71) of a naphthalene-2,6-diyl ring having a polar group include compounds represented by the following general formulas (I-71a) to (I-71av) It is.

[0095]

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[0096]

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More preferred forms of the partial structural formula (I-72) of 1,4-phenylene having a polar group are compounds represented by the following general formulas (I-72a) to (I-72r). .

[0098]

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The present invention also relates to 1,2,2 having a polar group.
A more preferred form of the partial structural formula (I-73) of the 3,4-tetrahydronaphthalene-2,6-diyl ring is represented by the following formula (I-73)
a) to (I-73bt).

[0100]

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[0101]

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In the present invention, more preferred forms of the unsubstituted or substituted decahydronaphthalene-2,6-diyl ring are represented by the following formulas (I-74a) to (I-74dm).

[0103]

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[0104]

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[0105]

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The formula (I-6) shown above, more specifically, the side chain groups (I-6a) to (I-6bc), the formula (I-72), and more specifically, the polar group (I-72a) ), (I-72b), (I-72d), (I-7
2e), (I-72g), (I-72h), (I-72j), (I-72k),
(I-72m), (I-72n), (I-72p), and (I-72q) are also applied to the general formulas (0-1) to (0-2) and are preferred modes.

Incidentally, each compound used below was distilled,
Column purification, removal of impurities using methods such as recrystallization,
A sufficiently purified product was used.

More specifically, when a general-purpose liquid crystal composition is intended, the following compounds are preferably used as the liquid crystal component A, and the effects of the present invention can be obtained.

(0-ai): a compound of the formulas (0-1) to (0-2), wherein R ¹ is an alkyl or alkenyl group having 2 to 7 carbon atoms.

(0-ai-1): Specific compounds represented by formulas (0-1) to (0-2) include compounds represented by formulas (0-11a) to (0-2):
2as), wherein the side group is (I-6a) to (I-6
f), (I-6ah) to (I-6an), (I-6av) to (I-6bc), wherein the polar group has a partial structure of (I-72a), (I-72b),
(I-72d), (I-72e), (I-72g), (I-72h), (I-72
j), (I-72k), (I-72m), (I-72n), (I-72p),
Compounds of the formula (I-72q), more preferably those of the general formulas (0-11a)
(0-11c), (0-12a)-(0-12e), (0-21a)-(0-21
b), (0-21d)-(0-21e), (0-21g)-(0-21h),
(0-22a)-(0-22c), (0-22e)-(0-22j), (0-22
l) ~ (0-22o), (0-22q) ~ (22-u), (0-22w) ~
Compounds having a basic structure of (0-22aa), (0-22ac) to (0-22as).

(0-aii): In the general formulas (0-1) to (0-2), Q ¹ is F, Cl, CF ₃ , OCF ₃ , OCF ₂ H or C
A compound which is N.

(0-aii-1): Specific compounds represented by formulas (0-1) to (0-2) include compounds represented by formulas (0-11a) to (0
-22as), wherein the side chain groups are (I-6a) to (I-6a).
bc) wherein the partial structure of the polar group is (I-72a), (I-72a)
b), (I-72d), (I-72e), (I-72g), (I-72h),
(I-72j), (I-72k), (I-72m), (I-72n), (I-72
p), a compound of (I-72q), more preferably a compound of the general formula (0-11)
a)-(0-11c), (0-12a)-(0-12e), (0-21a)-
(0-21b), (0-21d)-(0-21e), (0-21g)-(0-21
h), (0-22a)-(0-22c), (0-22e)-(0-22j),
(0-22l)-(0-22o), (0-22q)-(22-u), (0-22
w) Compounds having a basic structure of (0-22aa), (0-22ac) to (0-22as).

(0-aiii): In the general formulas (0-1) to (0-2), K ^{1 to} K ² are a single bond,-(CH ₂ ) _2- , -COO- or -C≡C- A compound that is

(0-aiii-1): Specific compounds represented by formulas (0-1) to (0-2) include compounds represented by formulas (0-11a) to (0
-22as), wherein the side chain groups are (I-6a) to (I-6a).
bc) wherein the partial structure of the polar group is (I-72a), (I-72a)
b), (I-72d), (I-72e), (I-72g), (I-72h),
(I-72j), (I-72k), (I-72m), (I-72n), (I-72
p), a compound of (I-72q), more preferably a compound of the general formula (0-11)
a)-(0-11c), (0-12a)-(0-12e), (0-21a)-
(0-21b), (0-21d)-(0-21e), (0-21g)-(0-21
h), (0-22a)-(0-22c), (0-22e)-(0-22j),
(0-22l)-(0-22o), (0-22q)-(22-u), (0-22
w)-(0-22aa), (0-22ac)-(0-22as)

(0-aiv): In the general formula (0-2), ring A ⁰
Is trans-1,4-cyclohexylene, 1,4-phenylene, 3-fluoro-1,4-phenylene or 3,5
A compound which is -difluoro-1,4-phenylene;

(0-aiv-1): In the case of the general formula (0-2), the ring A ⁰ of the general formula (0-22) is trans-1,4-cyclohexylene, 1,4-phenylene, -Fluoro-1,4-phenylene or 3,5-difluoro-1,4-phenylene is preferable, and specifically, the compound represented by the general formula (0-22a)
~ (0-22as), wherein the side chain group is (I-6a) ~
(I-6bc), wherein the partial structure of the polar group is (I-72a),
(I-72b), (I-72d), (I-72e), (I-72g), (I-72
h), (I-72j), (I-72k), (I-72m), (I-72n),
Compounds of (I-72p) and (I-72q), more preferably (0-22a) to (0-22c), (0-22e) to (0-22j), (0-22
l) ~ (0-22o), (0-22q) ~ (22-u), (0-22w) ~
It is a compound having a basic structure of (0-22aa), (0-22ac) to (0-22as), and can obtain more improved electro-optical characteristics.

(0-avi): In the general formula (0-2), W¹
~ W^TwoIs H, F, Cl, CF_ThreeOr OCF _ThreeA compound that is

(0-avi-1): In the case of the general formula (0-2), specifically, it is a basic structure of the general formulas (0-21a) to (0-22as), and the side chain group is (I-6a) to (I-6bc), wherein the partial structure of the polar group is, for example, (I-72a), (I-72b), (I-72
d), (I-72e), (I-72g), (I-72h), (I-72j),
(I-72k), (I-72m), (I-72n), (I-72p), (I-72
q), more preferably a compound in which at least one of W ¹ and W ² is substituted with a polar group, especially F
Is a compound substituted with Specifically,
W ¹ at least one to ^W-2 is F, a Cl, Q ¹ is _{F, Cl, CF 3, OCF} 3 or OCF ₂ H, compound substantially TFT for active when the main component -LC
Excellent in driving voltage reduction such as D and high voltage holding ratio.
^When a compound in which ¹ is F, Cl or CN is substantially the main component, a driving voltage, steepness and responsiveness of a TN-LCD, STN-LCD or the like, or electro-optical characteristics excellent in its temperature characteristics are obtained. be able to.

(0-avii): a compound of the formulas (0-1) to (0-2), wherein X ¹ and X ² are H, F, Cl, CF ₃ or OCF ₃ .

(0-avii-1): In the case of the general formulas (0-1) to (0-2), specifically, the basic structures of the general formulas (0-11a) to (0-22as) The side chain group is (I-6a) to (I-6bc), and the partial structure of the polar group is, for example, (I-72a), (I-72b),
(I-72d), (I-72e), (I-72g), (I-72h), (I-72
j), (I-72k), (I-72m), (I-72n), (I-72p),
Compounds of the formula (I-72q), more preferably those of the general formulas (0-11a)
(0-11c), (0-12a)-(0-12e), (0-21a)-(0-21
b), (0-21d)-(0-21e), (0-21g)-(0-21h),
(0-22a)-(0-22c), (0-22e)-(0-22j), (0-22
l) ~ (0-22o), (0-22q) ~ (22-u), (0-22w) ~
(0-22aa) and compounds having a basic structure of (0-22ac) to (0-22as).

(I-ai): a compound of the formulas (I-1) to (I-5), wherein R ¹ is an alkyl or alkenyl group having 2 to 7 carbon atoms.

(I-ai-1): Specific examples of the compound represented by the general formula (I-1) include the basic structures of the general formulas (I-11a) to (I-12bd), wherein the side chain group is (I-6a) to (I-6f), (I-
6ah) to (I-6an), (I-6av) to (I-6bc), wherein the polar group has a partial structure of (I-71a) to (I-71av), more preferably a compound of the general formula ( I-11a) to (I-12c), (I-12g)
~ (I-12i), (I-12m) ~ (I-12o), (I-12s) ~ (I-
12u), compounds having a basic structure of (I-12y) to (I-12ax). (I-ai-2): Specific compounds in the general formula (I-2) include the basic structures of the general formulas (I-21a) to (I-21gv), wherein the side chain group is (I-ai-2). 6a)-(I-6f), (I-6ah)-(I-6
an), (I-6av) to (I-6bc), wherein the polar group has a partial structure of (I-72a) to (I-72r), more preferably a compound of the general formulas (I-21a) to (I-21a) I-21fx), (I-21gk)-(I-21g)
v), compounds of the basic structure. (I-ai-3): Specific compounds in the general formula (I-3) include the basic structures of the general formulas (I-31a) to (I-32ep), wherein the side chain group is (I-ai-3). 6a)-(I-6f), (I-6ah)-(I-6
an), (I-6av) to (I-6bc), wherein the polar group has a partial structure of (I-72a) to (I-72r), more preferably a compound of the general formula (I-31a) to (I-31a) I-31ag), (I-32a)-(I-32ae),
(I-32ai) to (I-32be), (I-32bg) to (I-32cb),
Compounds having a basic structure of (I-32cd) to (I-32cy) and (I-32da) to (I-32eh). (I-ai-4): Specific examples of the compound represented by the general formula (I-4) include the basic structures of the general formulas (I-41a) to (I-43bs), wherein the side chain group is (I-ai-4). 6a)-(I-6f), (I-6ah)-(I-6
an), (I-6av) to (I-6bc), wherein the polar group has a partial structure of (I-72a) to (I-72r), more preferably a compound of the general formula (I-41a) to (I-41aa), (I-41af) to (I-41a)
i), (I-42a)-(I-42ad), (I-42ah), (I-42ak)
~ (I-42bl), (I-42bn) ~ (I-42bt), (I-42ca),
(I-42cg), (I-42cl), (I-42cr), (I-43a) to (I-42cg)
-43q), (I-43v), (I-43aa), (I-43af), (I-43a
k), (I-43am), (I-43ap), (I-43ar), (I-43a
u), (I-43aw), (I-43az), (I-43bb), (I-43b
Compounds having the basic structure of e), more preferably compounds of the general formula (I-41)
a)-(I-41k), (I-41x)-(I-41aa), (I-41af)
~ (I-41ai), (I-42a) ~ (I-42u), (I-42ah),
(I-42ak) to (I-42am), (I-42ao) to (I-42ar),
(I-42at), (I-42az), (I-42be)-(I-42bg),
(I-42bj)-(I-42bl), (I-42bo), (I-42bt),
(I-42ca), (I-42cg), (I-42cl), (I-42cr),
(I-43a) to (I-43g), (I-43l), (I-43q), (I-43
v), (I-43aa), (I-43af), (I-43ak), (I-43a)
m), (I-43ap), (I-43ar), (I-43au), (I-43a
w), (I-43az), (I-43bb) and (I-43be) compounds having the basic structure. (I-ai-5): A specific compound in the general formula (I-5) is a basic structure of the general formulas (I-51a) to (I-52an), wherein the side chain group is (I-ai-5). 6a)-(I-6f), (I-6ah)-(I-6
an), (I-6av) to (I-6bc), wherein the polar group has a partial structure of (I-73a) to (I-73bt), more preferably a compound of the general formula (I-51a) to (I-51c), (I-51g)-(I-51
n), (I-51p)-(I-51u), (I-51x), (I-51y),
(I-52a) to (I-52f), (I-52s) to (I-52ag), (I-5
Compounds having the basic structure of 2an) to (I-52bd). The compounds of the small groups (I-ai-1) to (I-ai-5) improve the compatibility of the liquid crystal composition and the operating temperature range by improving the low-temperature storage, thereby increasing the elastic constant and their ratio K ₃₃ / K ₁₁ and K ₃₃ /
Can be adjusted K _22, it is possible to obtain STN-LCD, a more improved electro-optical characteristics such as TFT-LCD.

(I-aii): In the general formulas (I-1) to (I-5), Q ¹ is F, Cl, CF ₃ , OCF ₃ , OCF ₂ H or C
A compound which is N.

(I-aii-1): Specific examples of the compound represented by the general formula (I-1) include the basic structures of the general formulas (I-11a) to (I-12bd), wherein the side chain group is (I-6a) to (I-6bc), wherein the partial structure of the polar group is (I-71a) to (I-71av), more preferably a compound of the general formula (I-11a) to (I-12c) ),
(I-12g)-(I-12i), (I-12m)-(I-12o), (I-12
s) Compounds having basic structures of (I-12u) and (I-12y) to (I-12ax). (I-aii-2): As a specific compound in the general formula (I-2), it is a basic structure of the general formulas (I-21a) to (I-21gv), and the side chain group is (I-aii-2). 6a) to (I-6bc), wherein the polar group has a partial structure of (I-72a) to (I-72r), more preferably a compound of the general formulas (I-21a) to (I-21fx), I-21gk)-(I
-21gv) Compound of basic structure. (I-aii-3): Specific examples of the compound represented by the general formula (I-3) include the basic structures of the general formulas (I-31a) to (I-32ep), wherein the side chain group is (I-aii-3). 6a) to (I-6bc), wherein the polar group has a partial structure of (I-72a) to (I-72r), more preferably a compound of the general formulas (I-31a) to (I-31ag), I-32a) to (I-
32ae), (I-32ai) to (I-32be), (I-32bg) to (I-32
cb), (I-32cd) to (I-32cy), (I-32da) to (I-32eh)
A compound having the basic structure of (I-aii-4): Specific examples of the compound represented by the general formula (I-4) include the basic structures of the general formulas (I-41a) to (I-43bs), wherein the side chain group is (I-aii-4). 6a) to (I-6bc), wherein the polar group has a partial structure of (I-72a) to (I-72r), more preferably a compound of the general formula (I-41a) to (I-41aa), (I-41af)
~ (I-41ai), (I-42a) ~ (I-42ad), (I-42ah),
(I-42ak) to (I-42bl), (I-42bn) to (I-42bt),
(I-42ca), (I-42cg), (I-42cl), (I-42cr),
(I-43a) to (I-43q), (I-43v), (I-43aa), (I-4
3af), (I-43ak), (I-43am), (I-43ap), (I-43a
r), (I-43au), (I-43aw), (I-43az), (I-43b
b), compounds having the basic structure of (I-43be), more preferably compounds of the general formulas (I-41a) to (I-41k), (I-41x) to (I-41a)
a), (I-41af)-(I-41ai), (I-42a)-(I-42
u), (I-42ah), (I-42ak)-(I-42am), (I-42a
o)-(I-42ar), (I-42at), (I-42az), (I-42b
e) to (I-42bg), (I-42bj) to (I-42bl), (I-42b
o), (I-42bt), (I-42ca), (I-42cg), (I-42c
l), (I-42cr), (I-43a)-(I-43g), (I-43l),
(I-43q), (I-43v), (I-43aa), (I-43af), (I-43af)
43ak), (I-43am), (I-43ap), (I-43ar), (I-43
au), (I-43aw), (I-43az), (I-43bb), (I-43b
Compounds having the basic structure of e). (I-aii-5): Specific examples of the compound represented by the general formula (I-5) include the basic structures of the general formulas (I-51a) to (I-52an), wherein the side chain group is (I-aii-5). 6a) to (I-6bc), wherein the polar group has a partial structure of (I-73a) to (I-73bt), more preferably a compound of the general formula (I-51a) to (I-51c), (I-51g)
~ (I-51n), (I-51p) ~ (I-51u), (I-51x), (I-51x)
51y), (I-52a) to (I-52f), (I-52s) to (I-52a
g) Compounds having the basic structure of (I-52an) to (I-52bd). In the compounds of subgroups (I-aii-1) to (I-aii-5), as a specific application, Q ¹ is F, Cl, CF ₃ , OCF ₃ or OCF ₂ H (I-71i) ~ (I-71av), (I-72d) ~
When a compound having a polar group of (I-72r) or (I-73m) to (I-73bt) is substantially used as a main component, highly reliable STN-LC is used.
D and TFT-LCD for active, preferably in STN-LCD or the like, has excellent reduction and a high voltage holding ratio of the driving voltage, Q ¹ is F,
When a compound having a polar group of Cl or CN is substantially used as a main component, TN-LCD, STN-LCD, etc., to obtain a driving voltage, steepness and responsiveness, or to obtain electro-optical characteristics excellent in its temperature characteristics. Can be.

(I-aiii): In the general formulas (I-1) to (I-5), K ^{1 to} K ⁵ are a single bond, — (CH ₂ ) ₂ —, —COO— or —
A compound wherein C≡C—.

(I-aiii-1): Specific compounds in formula (I-1) include compounds represented by formulas (I-11a) to (I-12bd)
Wherein the side chain group is (I-6a) to (I-6bc) and the partial structure of the polar group is (I-71a) to (I-71av), more preferably Formulas (I-11a) to (I-12c),
(I-12g)-(I-12i), (I-12m)-(I-12o), (I-12
s) to (I-12u), (I-12y) to (I-12ax, compounds having the basic structure. (I-aiii-2): Specific compounds in the general formula (I-2) include general formulas In the basic structure of (I-21a) to (I-21gv), the side chain group is (I-6a) to (I-6bc), and the partial structure of the polar group is (I-72a) to (I-72a). Compounds of formula I-72r), more preferably formulas (I-21a) to (I-21fx) and (I-21gk)
A compound having the basic structure of (I-21gv). (I-aiii-3): As a specific compound in the general formula (I-3), a compound having a basic structure of the general formulas (I-31a) to (I-32ep), 6a) to (I-6bc), wherein the polar group has a partial structure of (I-72a) to (I-72r), more preferably a compound of the general formulas (I-31a) to (I-31ag), I-32a) ~
(I-32ae), (I-32ai)-(I-32be), (I-32bg)-
(I-32cb), (I-32cd) to (I-32cy), (I-32da) to (I
-32eh) is a compound having a basic structure. (I-aiii-4): Specific compounds in the general formula (I-4) include general formulas (I-41a) to (I-41aa) and (I-41a).
c) the basic structure of (I-41ad), (I-41af) to (I-43bs), wherein the side chain group is (I-6a) to (I-6bc), and the polar group moiety A compound having a structure of (I-72a) to (I-72r),
More preferably, general formulas (I-41a) to (I-41aa), (I-41a)
f)-(I-41ai), (I-42a)-(I-42ad), (I-42a
h), (I-42ak)-(I-42bl), (I-42bn)-(I-42b
t), (I-42ca), (I-42cg), (I-42cl), (I-42c
r), (I-43a)-(I-43q), (I-43v), (I-43aa),
(I-43af), (I-43ak), (I-43am), (I-43ap),
(I-43ar), (I-43au), (I-43aw), (I-43az),
Compounds having a basic structure of (I-43bb) or (I-43be), and more preferably compounds of the general formulas (I-41a) to (I-41k), (I-41x) to (I-4)
1aa), (I-41af) to (I-41ai), (I-42a) to (I-42
u), (I-42ah), (I-42ak)-(I-42am), (I-42a
o)-(I-42ar), (I-42at), (I-42az), (I-42b
e) to (I-42bg), (I-42bj) to (I-42bl), (I-42b
o), (I-42bt), (I-42ca), (I-42cg), (I-42c
l), (I-42cr), (I-43a)-(I-43g), (I-43l),
(I-43q), (I-43v), (I-43aa), (I-43af), (I-43af)
43ak), (I-43am), (I-43ap), (I-43ar), (I-43
au), (I-43aw), (I-43az), (I-43bb), (I-43b
Compounds having the basic structure of e). (I-aiii-5): As a specific compound in the general formula (I-5), a compound having the basic structure of the general formulas (I-51a) to (I-52an), 6a) to (I-6bc), wherein the polar group has a partial structure of (I-73a) to (I-73bt),
More preferably, general formulas (I-51a) to (I-51c), (I-51a)
g)-(I-51n), (I-51p)-(I-51u), (I-51x),
(I-51y), (I-52a) to (I-52f), (I-52s) to (I-52
ag), compounds having a basic structure of (I-52an) to (I-52bd). Among the compounds of the subgroups (I-aiii-1) to (I-aiii-5), compounds in which K ^{1 to} K ⁵ are a single bond are particularly preferred because of improved compatibility of the liquid crystal composition and improved low-temperature storage. It is possible to extend the operating temperature range and achieve relatively quick response to a predetermined drive voltage, and the compound in which K ^{1 to} K ⁵ are-(CH ₂ ) ₂ -is a compound of the liquid crystal composition. The compound having K ^{1 to} K ⁵ of —COO— can improve the compatibility of the liquid crystal composition and improve the low-temperature storage. , The operating temperature range can be expanded, the driving voltage can be reduced, and the temperature change can be improved. For compounds in which K ^{1 to} K ⁵ are -C≡C-, the birefringence is adjusted over a wide range. STN-L can reduce the driving voltage and improve its temperature change. Improved electro-optical characteristics such as CD, TFT-LCD, etc. can be obtained.

(I-aiv): In formulas (I-1) to (I-5), rings A ^{1 to} A ⁴ are trans-1,4-cyclohexylene, 1,4-phenylene, 3-fluoro A compound which is -1,4-phenylene or 3,5-difluoro-1,4-phenylene.

(I-aiv-1): In the case of the general formula (I- ¹ ), the ring A ^{1 of} the general formula (I-11) and the ring A ^{2 of the} general formula (I-12) are trans-1,4 -Cyclohexylene, 1,4-phenylene, 3
-Fluoro-1,4-phenylene or 3,5-difluoro-1,4-phenylene is preferred, and specifically, the compounds represented by formulas (I-11a) to (I-11l), (I-12a) ~ (I-1
2ax), wherein the side chain groups are (I-6a) to (I-6b).
c) wherein the partial structure of the polar group is (I-71a) to (I-71a).
v) Compounds of the general formulas (I-11a) to (I-11a)
l), (I-12a) to (I-12c), (I-12g) to (I-12i),
(I-12m)-(I-12o), (I-12s)-(I-12u), (I-12
y) to (I-12ax), which are compounds having the basic structure, and can provide further improved electro-optical properties. In particular, (I-ai
In the case of a compound having the structural characteristics of (ii) and (I-aiv) at the same time, the compound exhibits more differentiated properties and can be used more widely in a liquid crystal composition. (I-aiv-1a): K ¹ in general formula (I-11), general formula (I-12)
A of K ² is a single bond, the formula ring A ¹ in (I-11), formula (I-12) of the ring A ² is 1,4-phenylene, 3-fluoro-1,4-phenylene or 3 , 5-difluoro-1,4
The compound represented by phenylene has a medium or higher birefringence and a relatively large dielectric anisotropy; (I-aiv-1b): K ¹ in the general formula (I-11), General formula (I-12)
A of K ² is a single bond, general formula (I-11) Ring A ^1, compounds of general formula wherein ring A ² is represented by xylene trans-1,4-cyclo (I-12) is a nematic phase (I-aiv-1c): K of the general formula (I-11)
¹ , K ² in the general formula (I-12) is — (CH ₂ ) ₂ —, and ring A ^{1 in} the general formula (I-11) and ring A ^{2 in the} general formula (I-12) are trans-
The compound of 1,4-cyclohexylene has good compatibility, and (I-aiv-1d): K ^{1 in} the general formula (I-11) and the general formula (I-12)
A of K ² is -COO-, general formula (I-11) of the ring A ^1, the general formula (I-12) ring A ² is 1,4-phenylene, 3-fluoro-1,4-phenylene or 3,5-difluoro-
The compound represented by 1,4-phenylene expands the nematic phase and is excellent in reducing the driving voltage. (I-aiv-1e): K ^{1 in} the general formula (I-11), and the general formula (I-12)
A of K ² is -C≡C-, ring A ¹ in the general formula (I-11), the ring A ² in the general formula (I-12) is 1,4-phenylene, 3-fluoro-1,4 Phenylene or 3,5-difluoro-
The compound represented by 1,4-phenylene has an extremely high or relatively high birefringence. (I-aiv-2): In the case of the general formula (I-2), the ring A ¹ is trans-1,4-cyclohexylene, 1,4-phenylene,
-Fluoro-1,4-phenylene or 3,5-difluoro-1,4-phenylene is preferred, and specifically, the compounds represented by the general formulas (I-21a) to (I-21ab), (I-21ak) ~ (I
-21gv), wherein the side chain groups are (I-6a) to (I-6a).
bc) wherein the partial structure of the polar group is (I-72a) to (I-72a).
r), more preferably compounds of the general formulas (I-21a) to (I-21
y), a compound having a basic structure of (I-21ak) to (I-21gv), and further improved electro-optical characteristics can be obtained.
In particular, in the case of the compound of the general formula (I-21) having the structural characteristics of (I-aiii) and (I-aiv) at the same time, the compound exhibits more differentiated properties and can be used more widely in a liquid crystal composition. it can. (I-aiv-2a): Any of K ^{1 to} K ⁴ is a single bond, and any of rings A ^{1 to} A ³ is 1,4-phenylene, 3-fluoro-1,4-phenylene or 3, 5-difluoro-1,
The compound represented by 4-phenylene has a medium or higher birefringence and relatively large dielectric anisotropy, and (I-aiv-2b): any one of K ^{1 to} K ⁴ is a single A compound in which any ^{one of} the rings A ^{1 to} A ³ is represented by trans-1,4-cyclohexylene has a relatively fast response by expanding the nematic phase, (I-aiv-2c ): A compound in which any of K ^{1 to} K ⁴ is — (CH ₂ ) ₂ — and any of rings A ^{1 to} A ³ is trans-1,4-cyclohexylene has good compatibility. (I-aiv-2d): K ^{1 to} K ⁴ are any of —COO—, and any of rings A ^{1 to} A ³ is 1,4-phenylene,
The compound represented by fluoro-1,4-phenylene or 3,5-difluoro-1,4-phenylene expands a nematic phase and is excellent in driving voltage reduction. (I-aiv-2e): K ^{1 to} K ⁴ Is -C≡C-, and any of rings A ^{1 to} A ³ is 1,4-phenylene,
The compound represented by fluoro-1,4-phenylene or 3,5-difluoro-1,4-phenylene has an extremely high or relatively high birefringence. (I-aiv-3): In the case of the general formula (I-3), the ring A ¹ is trans-1,4-cyclohexylene, 1,4-phenylene, 3
-Fluoro-1,4-phenylene or 3,5-difluoro-1,4-phenylene is preferred, and specifically, formulas (I-32a) to (I-32aa) and (I-32ai) ~ (I
-32ep), wherein the side chain groups are (I-6a) to (I-6
bc) wherein the partial structure of the polar group is (I-72a) to (I-72a).
r), more preferably compounds of the general formulas (I-31a) to (I-31a)
ag), (I-32a) to (I-32ae), (I-32ai) to (I-32b
e), (I-32bg) to (I-32cb), (I-32cd) to (I-32c
y) and (I-32da) to (I-32eh), which are compounds having the basic structure, and can provide further improved electro-optical characteristics.
In particular, in the case of the compounds of the general formulas (I-31) to (I-32) having the structural characteristics of (I-aiii) and (I-aiv) at the same time, the compounds exhibit more differentiated properties and are more widely used in liquid crystals. It can be used in compositions. (I-aiv-3a): Any of K ^{1 to} K ³ is a single bond, and any of rings A ¹ and A ² is 1,4-phenylene, 3-fluoro-1,4-phenylene or 3, 5-difluoro-1,
The compound represented by 4-phenylene has a medium or higher birefringence and relatively large dielectric anisotropy, and (I-aiv-3b): any one of K ^{1 to} K ³ is a single A compound which is a bond and in which either ring A ¹ or A ² is represented by trans-1,4-cyclohexylene has a relatively fast response by expanding the nematic phase, (I-aiv-3c ): A compound in which ^{one of} K ^{1 to} K ³ is — (CH ₂ ) ₂ — and one of rings A ¹ and A ² is trans-1,4-cyclohexylene has good compatibility. (I-aiv-3d): any of K ^{1 to} K ³ is —COO—, and any of rings A ¹ and A ² is 1,4-phenylene,
The compound represented by fluoro-1,4-phenylene or 3,5-difluoro-1,4-phenylene expands a nematic phase and is excellent in driving voltage reduction. (I-aiv-3e): K ^{1 to} K ³ Is -C≡C-, and one of rings A ¹ and A ² is 1,4-phenylene,
The compound represented by fluoro-1,4-phenylene or 3,5-difluoro-1,4-phenylene has an extremely high or relatively high birefringence. (I-aiv-4): In the case of the general formula (I-4), the rings A ^{1 to} A ⁴ are trans-1,4-cyclohexylene, 1,4-phenylene, 3-fluoro-1,4-phenylene Or 3,5-difluoro-1,4-phenylene,
Specifically, general formulas (I-42a) to (I-42ag), (I-42a)
k)-(I-42an), (I-42ap)-(I-42as), (I-42a
u)-(I-42ax), (I-42az)-(I-42bc), (I-42b
e)-(I-42bh), (I-42bj)-(I-42bm), (I-42b
o) to (I-43bs), wherein the side chain group is (I-6
a) to (I-6bc), wherein the partial structure of the polar group is (I-72)
a) Compounds of (I-72r), more preferably (I-42a)
(I-42ad), (I-42ak)-(I-42an), (I-42ap)-
(I-42as), (I-42au)-(I-42ax), (I-42az)-
(I-42bc), (I-42be)-(I-42bh), (I-42bj)-
(I-42bl), (I-42bo) to (I-42bt), (I-42ca),
(I-42cg), (I-42cl), (I-42cr), (I-43a) to (I-42cg)
-43q), (I-43v), (I-43aa), (I-43af), (I-43a
k), (I-43am), (I-43ap), (I-43ar), (I-43a
u), (I-43aw), (I-43az), (I-43bb), (I-43b
Compounds having the basic structure of e), more preferably compounds of the general formula (I-42)
a)-(I-42u), (I-42ak)-(I-42am), (I-42ap)
~ (I-42ar), (I-42az), (I-42be) ~ (I-42bg),
(I-42bj)-(I-42bl), (I-42bo), (I-42bt),
(I-42ca), (I-42cg), (I-42cl), (I-42cr),
(I-43a) to (I-43g), (I-43l), (I-43q), (I-43
v), (I-43aa), (I-43af), (I-43ak), (I-43a)
m), (I-43ap), (I-43ar), (I-43au), (I-43a
w), (I-43az), (I-43bb), and (I-43be) compounds having the basic structure, and can provide further improved electro-optical properties. In particular, in the case of the compounds of the general formulas (I-42) to (I-43) having the structural characteristics of (I-aiii) and (I-aiv) at the same time, the compounds exhibit more differentiated properties and are more widely used in liquid crystals. It can be used in compositions. (I-aiv-4a): Any of K ^{1 to} K ⁵ is a single bond, and any of rings A ^{1 to} A ⁴ is 1,4-phenylene, 3-fluoro-1,4-phenylene or 3, 5-difluoro-1,
The compound represented by 4-phenylene has a medium or higher birefringence and a relatively large dielectric anisotropy. (I-aiv-4b): Any one of K ^{1 to} K ⁵ is simply A compound in which any ^{one of} the rings A ^{1 to} A ⁴ is represented by trans-1,4-cyclohexylene has a relatively fast response by expanding the nematic phase, (I-aiv-4c ): A compound in which any of K ^{1 to} K ⁵ is — (CH ₂ ) ₂ — and any of rings A ^{1 to} A ⁴ is trans-1,4-cyclohexylene has good compatibility. (I-aiv-4d): any of K ^{1 to} K ⁵ is —COO—, and any of rings A ^{1 to} A ⁴ (where 1,4-phenylene, 3
Compounds represented by -fluoro-1,4-phenylene or 3,5-difluoro-1,4-phenylene expand a nematic phase and are excellent in driving voltage reduction. (I-aiv-4e): K ^{1 to} K ⁵ is -C≡C-, and any of rings A ^{1 to} A ⁴ is 1,4-phenylene,
The compound represented by fluoro-1,4-phenylene or 3,5-difluoro-1,4-phenylene has an extremely high or relatively high birefringence. (I-aiv-5): In the case of general formula (I-5), rings A ^{1 to} A ³ are trans-1,4-cyclohexylene, 1,4-phenylene, 3-fluoro-1,4-phenylene Or 3,5-difluoro-1,4-phenylene,
Specifically, general formulas (I-51a) to (I-51l), (I-52a)
~ (I-52ax) basic structure, where the side chain group is (I-6a) ~
(I-6bc), wherein the partial structure of the polar group is (I-73a) to
Compounds of (I-73bt), more preferably (I-51a) to (I-5)
1l), (I-52a) to (I-52f), (I-52s) to (I-52a
g), (I-52ak) and (I-52an) to (I-52ax), which are compounds having the basic structure, and can provide further improved electro-optical properties. Particularly, in the case of the compounds of the general formulas (I-51) to (I-52) having the structural characteristics of (I-aiii) and (I-aiv) at the same time, the compounds exhibit more differentiated properties and are more widely used in liquid crystals. It can be used in compositions. (I-aiv-5a): Any of K ^{1 to} K ³ is a single bond, and any of rings A ^{1 to} A ³ is 1,4-phenylene, 3-fluoro-1,4-phenylene or 3, 5-difluoro-1,
The compound represented by 4-phenylene has a medium or higher birefringence and a relatively large dielectric anisotropy. (I-aiv-5b): Any one of K ^{1 to} K ³ is a single A compound in which any of rings A ^{1 to} A ³ is represented by trans-1,4-cyclohexylene has a relatively fast response by expanding a nematic phase; (I-aiv-5c ): A compound in which any of K ^{1 to} K ³ is — (CH ₂ ) ₂ — and any of rings A ^{1 to} A ³ is trans-1,4-cyclohexylene has good compatibility. (I-aiv-5d): any of K ^{1 to} K ³ is —COO—, and any of rings A ^{1 to} A ³ is 1,4-phenylene,
The compound represented by fluoro-1,4-phenylene or 3,5-difluoro-1,4-phenylene expands a nematic phase and is excellent in driving voltage reduction. (I-aiv-5e): K ¹ is -C化合物 C-, wherein the ring A ¹ and A ² are compounds represented by 1,4-phenylene, 3-fluoro-1,4-phenylene or 3,5-difluoro-1,4-phenylene or K ² is- Compounds in which C≡C— and rings A ² and A ³ are represented by 1,4-phenylene, 3-fluoro-1,4-phenylene or 3,5-difluoro-1,4-phenylene are extremely high or It has a relatively high birefringence.

(I-av): In the general formulas (I-1) to (I-5), a naphthalene-2,6-diyl ring, 1,2,3,4-
Present in a tetrahydronaphthalene-2,6-diyl ring, a decahydronaphthalene-2,6-diyl ring, a side-chain group R ¹ , a polar group Q ¹ , a linking group K ^{1 to} K ⁵ and a ring A ^{1 to} A ⁴ . 1
A compound in which one or more hydrogen atoms have been replaced with deuterium atoms. Since this compound is useful for adjusting the elastic constant of the liquid crystal composition and adjusting the pretilt angle corresponding to the alignment film, it is preferable to include at least one compound substituted with a deuterium atom. (I-avi): In general formulas (I-1) to (I-3) and (I-5),
The compound wherein W ^{1 to} W ³ are H, F, Cl, CF ₃ or OCF ₃ .

(I-avi-1): In the case of the general formula (I-1),
In general, the basic structure of general formulas (I-11a) to (I-12bd)
Therefore, the side group is (I-6a) to (I-6bc) and the polar group
A compound having a partial structure of, for example, (I-71a) to (I-71av),
More preferably, the polar group has a partial structure of (I-71b) to (I-71b).
h), (I-71j)-(I-71p), (I-71r)-(I-71x),
(I-71z)-(I-71af), (I-71ah)-(I-71an), (I
-71ap) to (I-71av), more preferably
W¹, W^ThreeAt least one of which is substituted with a polar group
Compounds, especially compounds substituted with F. Concrete
For typical applications, W ¹~ W^ThreeAt least one of F, Cl
And Q¹Is F, Cl, CF_Three, OCF_ThreeOr OCF_TwoH
When a compound that is
For driving voltage reduction and high voltage holding ratio of TFT-LCD etc.
Q¹Is a compound in which is F, Cl or CN
When the main component is the main component, the drive power of TN-LCD, STN-LCD, etc.
Electricity with excellent pressure, steepness, response and its temperature characteristics
Optical characteristics can be obtained. (I-avi-2): In the case of the general formula (I-2), specifically, a side chain
The group is (I-6a) to (I-6bc), and the partial structure of a polar group
Are (I-72a) to (I-72r), for example, a compound represented by the general formula (I-21)
a) Compounds having a basic structure of (I-21gv), more preferably
The basic structures are represented by the general formulas (I-21b) to (I-21h) and (I-21j)
~ (I-21p), (I-21r) ~ (I-21aa), (I-21ad) ~
(I-21aj), (I-21al)-(I-21ar), (I-21at)-
(I-21az), (I-21bb)-(I-21bh), (I-21bj)-
(I-21bp), (I-21br)-(I-21bx), (I-21bz)-
(I-21cf), (I-21ch)-(I-21cn), (I-21cp)-
(I-21cv), (I-21cx)-(I-21dd), (I-21df)-
(I-21dl), (I-21dn)-(I-21dt), (I-21dv)-
(I-21eb), (I-21ed)-(I-21em), (I-21ep)-
(I-21ey), (I-21fb)-(I-21fk), (I-21fn)-
(I-21fw), (I-21fz)-(I-21gi), (I-21gl)-
A compound of formula (I-21gu), even more preferably at least W
¹Is a compound substituted with a polar group, in particular, substituted with F
Compound. (I-avi-3): In the case of the general formula (I-3), specifically, a side chain
The group is (I-6a) to (I-6bc), and the partial structure of a polar group
Are (I-72a) to (I-72r), for example, the general formula (I-31
a) Compounds having a basic structure of (I-32ep), more preferably
The basic structure is represented by the general formulas (I-31b) to (I-31k), (I-31m)
~ (I-31v), (I-31x) ~ (I-31ag), (I-32b) ~ (I
-32g), (I-32i) to (I-32n), (I-32p) to (I-32
z), (I-32ac)-(I-32ah), (I-32aj)-(I-32a
o), (I-32aq)-(I-32av), (I-32ax)-(I-32b
e), (I-32bg) to (I-32bl), (I-32bn) to (I-32b
s), (I-32bu)-(I-32cb), (I-32cd)-(I-32c
i), (I-32ck)-(I-32cp), (I-32cr)-(I-32c
y), (I-32da)-(I-32df), (I-32dh)-(I-32d
m), (I-32do)-(I-32dv), (I-32dx)-(I-32e
h), (I-32ek), (I-32el), (I-32en), (I-32e
compounds of p), even more preferably at least W¹Is polar
Substituted with a group, especially a compound substituted with F
It is a compound. (I-avi-4): In the case of the general formula (I-5), specifically,
It is a basic structure of formulas (I-51a) to (I-52an),
Is (I-6a) to (I-6bc), and the partial structure of the polar group is
For example, compounds of (I-73a) to (I-73bi), more preferably
Has a partial structure of a polar group (I-73b) to (I-73l), (I-73b)
n)-(I-73x), (I-73z)-(I-73aj), (I-73al)
~ (I-73av), (I-73ax) ~ (I-73bh), (I-73bj) ~
(I-73bt), more preferably W¹, W^Twoof
A compound in which at least one is substituted with a polar group,
In particular, compounds substituted with F. As a specific application
W¹, W^TwoAt least one or both of F and Cl
And Q¹Is F, Cl, CF_Three, OCF_ThreeOr OCF_TwoH
When a compound that is
For driving voltage reduction and high voltage holding ratio of TFT-LCD etc.
Q¹Is a compound in which is F, Cl or CN
When the main component is the main component, the drive power of TN-LCD, STN-LCD, etc.
Electricity with excellent pressure, steepness, response and its temperature characteristics
Optical characteristics can be obtained. Compounds of subgroups (I-avi-1) to (I-avi-4) are liquid crystal compositions
Operating temperature range by improving the compatibility of
To reduce drive voltage and improve its temperature change,
Achieve relatively fast response to constant drive voltage
Can be improved, STN-LCD, TFT-LCD, etc.
Can obtain the obtained electro-optical properties,

(I-avii): a compound of the formulas (I-2) to (I-4), wherein X ¹ and X ² are H, F, Cl, CF ₃ or OCF ₃ .

(I-avii-1): In the case of the general formula (I-2),
Physically, it has the basic structure of general formulas (I-21a) to (I-21gv)
And the side chain groups are (I-6a) to (I-6bc)
A compound having a partial structure of (I-72a) to (I-72r),
More preferably, general formulas (I-21a) to (I-21fx), (I-21g)
k) to (I-21gv). (I-avii-2): In the case of the general formula (I-3), specifically,
The basic structure of general formulas (I-31a) to (I-32ep),
The group is (I-6a) to (I-6bc), and the partial structure of a polar group
Are, for example, compounds of (I-72a) to (I-72r), more preferably
Are the general formulas (I-31a) to (I-31ag), (I-32a) to (I-32a
e), (I-32ai)-(I-32be), (I-32bg)-(I-32c
b), (I-32cd)-(I-32cy), (I-32da)-(I-32eh)
Is a compound having a basic structure of (I-avii-3): In the case of the general formula (I-4), specifically,
The basic structure of the general formulas (I-41a) to (I-43bs),
The group is (I-6a) to (I-6bc), and the partial structure of a polar group
Are more preferably (I-72a) to (I-72r), for example.
Or the general formulas (I-41a) to (I-41aa), (I-41af) to (I
-41ai), (I-42a) to (I-42ad), (I-42ah), (I-42
ak) to (I-42bl), (I-42bn) to (I-42bt), (I-42c
a), (I-42cg), (I-42cl), (I-42cr), (I-43a)
~ (I-43q), (I-43v), (I-43aa), (I-43af),
(I-43ak), (I-43am), (I-43ap), (I-43ar),
(I-43au), (I-43aw), (I-43az), (I-43bb),
A compound having the basic structure of (I-43be), and more preferably a compound of the general formula
(I-41a) to (I-41k), (I-41x) to (I-41aa), (I-4
1af)-(I-41ai), (I-42a)-(I-42u), (I-42a
h), (I-42ak)-(I-42am), (I-42ao)-(I-42a)
r), (I-42at), (I-42az), (I-42be)-(I-42b)
g), (I-42bj) to (I-42bl), (I-42bo), (I-42b
t), (I-42ca), (I-42cg), (I-42cl), (I-42c
r), (I-43a)-(I-43g), (I-43l), (I-43q),
(I-43v), (I-43aa), (I-43af), (I-43ak), (I
-43am), (I-43ap), (I-43ar), (I-43au), (I-4
3aw), (I-43az), (I-43bb), (I-43be)
Compound. In the compounds of subgroups (I-avii-1) to (I-avii-3),
As physical uses, more preferred general formulas (I-2) to (I-
The compound of 4) is as follows. X¹And X^TwoFew in the set
At least one or both are F, Cl, Q¹Is F, C
1, CF_Three, OCF _ThreeOr OCF_TwoH, for example (I-72
e), (I-72f), (I-72h), (I-72i), (I-72k),
(I-72l), (I-72n), (I-72o), (I-72q), (I-72
When the compound of r) is substantially the main component,
For driving voltage reduction and high voltage holding ratio of TFT-LCD etc.
Q¹Is F, Cl or CN, for example (I-72
b), (I-72c), (I-72e), (I-72f), (I-72h),
When the compound of (I-72i) is substantially the main component, TN-
LCD, STN-LCD, etc. drive voltage, steepness and response, or
The electro-optical characteristics excellent in the temperature characteristics can be obtained.

(I-aviii): X ³ in the compounds represented by formulas (I-2) to (I-4) can be a CH ₃ group. Such a compound is inferior in responsiveness but excellent in compatibility, and can be used for the purpose of obtaining various properties other than responsiveness. In this case, 15 to the total amount of the liquid crystal composition of the present invention.
% Is desirably used.

The liquid crystal component A of the present invention comprises these small groups (0-a
i) to (0-avii), containing one or more compounds selected from one, two or three or more subgroups, and a subgroup (I-ai)
~ (I-aviii) can contain one or more compounds selected from one, two or three or more subgroups, but each is effective even if it comprises only one kind from one subgroup. Can be obtained. In addition, small group (0-ai)-(0-avi
Compounds which simultaneously have two or more structural features of the compounds shown in i) and subgroups (I-ai) to (I-aviii) are more preferable. The liquid crystal component A is used in the above-mentioned small group (0-
ai) to (0-avii) and the compounds shown in the above subgroups (I-ai) to (I-aviii). The liquid crystal composition of the present invention containing such a liquid crystal component A has improved compatibility,
The operating temperature range of the liquid crystal display characteristics can be expanded by improving low-temperature storage, etc., the drive voltage can be reduced and its temperature change can be improved, and relatively quick response to a predetermined drive voltage can be achieved or improved. TN using this as a constituent material
-Improved electro-optical characteristics such as LCD, STN-LCD, and TFT-LCD can be obtained.

When a liquid crystal composition suitable for TN-LCD, STN-LCD, etc. is intended, high reliability is required.
When a liquid crystal composition suitable for an STN-LCD, an active STN-LCD, a TFT-LCD, or the like is intended, the general formulas (0-1) to (0-1)
-2), more optimal compounds can be selected from the compounds in (I-1) to (I-5), and 1 to 20 compounds can be contained. From this viewpoint, one or more compounds of one or more of the following subgroups (0-bi) to (0-biv) are contained, and the following subgroups (I-bi) to (I-bxii )), One to 20 or more compounds of one or two or three or more compounds, and the content of the compound is 5 to 100% by weight.

In the general formula (0-1), R ¹ is an alkyl or alkenyl group having 2 to 7 carbon atoms, Q ¹ is F, Cl, CF ₃ , OCF ₃ or CN, and X ¹ is H,
In the case of F, Cl, CF ₃ or OCF ₃ , the following small group (0-
The compounds of bi) and (0-bii) are more preferred. (0-bi): k ¹ = 0, K ¹ is a single bond,-(CH ₂ )
_2- , -COO- or -C≡C-, specifically a compound of the general formula (0-11), more preferably, for example,
It is a compound having a basic structure represented by any one of formulas (0-11a) to (0-11c). It should be noted that a compound in which at least one of the hydrogen atoms present in these rings is substituted with a deuterium atom is also included. (0-bii): k ¹ = 1, K ¹ and K ² are single bonds, and-(C
H ₂ ) ₂ —, —COO— or a compound of the formula —C≡C—, specifically, a compound of the general formula (0-12), and more preferably, for example, a compound of the general formulas (0-12a) to (0-12e) ) Is a compound having the basic structure. It should be noted that a compound in which at least one of the hydrogen atoms present in these rings is substituted with a deuterium atom is also included.

In the general formula (0-2), R ¹ is an alkyl or alkenyl group having 2 to 7 carbon atoms, Q ¹ is F, Cl, CF ₃ , OCF ₃ or CN, and X ¹ is H,
F, Cl, CF ₃ or OCF ₃ and W ¹ and W ² are H, F,
In the case of Cl, CF ₃ or OCF ₃ , the following subgroup (0-bii
Compounds i) and (0-biv) are more preferred. (0-biii): k ¹ = 0, K ² is a single bond,-(CH ₂ ) ₂
-, -COO- or -C≡C-, specifically, a compound of the general formula (0-21), more preferably, for example, a basic structure of the general formulas (0-21a) to (0-21i) Is a compound of
It should be noted that a compound in which at least one of the hydrogen atoms present in these rings is substituted with a deuterium atom is also included. (0-biv): k ¹ = 1, and ring A ⁰ is trans-1,4
-Cyclohexylene, 1,4-phenylene, 3-fluoro-1,4-phenylene or 3,5-difluoro-1,
4-phenylene, K ¹ and K ² are a single bond,-(CH ₂ ) ₂
-, -COO- or -C≡C-, specifically, a compound of the general formula (0-22), more preferably, for example, a basic structure of the general formulas (0-22a) to (0-22as) Is a compound of It should be noted that a compound in which at least one of the hydrogen atoms present in these rings is substituted with a deuterium atom is also included.

[0138] In the general formula ^(I-1), R 1 is an alkyl or alkenyl group having 2 to 7 carbon atoms, a Q ¹ is _{F, Cl, CF 3, OCF} 3 or CN, W ¹ ~ W ³ is
When it is H, F, Cl, CF ₃ or OCF ₃ , compounds of the following subgroups (I-bi) and (I-bii) are more preferred. (I-bi): k ¹ = k ² = 0 and ring A ¹ is trans-
1,4-cyclohexylene, 1,4-phenylene, 3-
Fluoro-1,4-phenylene, 3,5-difluoro-
1,4-phenylene, naphthalene-2,6-diyl,
1,2,3,4-tetrahydronaphthalene-2,6-
Diyl or decahydronaphthalene-2,6-diyl, wherein K ¹ is a single bond, — (CH ₂ ) ₂ —, —COO— or —
Compounds in which C≡C—, specifically, compounds of the general formula (I-11), more preferably, for example, compounds of the general formulas (I-11a) to (I-1)
1l) and (I-11p) to (I-11y). The ring A ¹ is decahydronaphthalene-2,6-
In the case of a diyl ring, specifically, for example, a compound represented by the general formula (I-11)
x) and (I-11y), (I-74b) to (I-7
Compounds substituted with 4cv) are also preferred. It should be noted that a compound in which at least one of the hydrogen atoms present in these rings is substituted with a deuterium atom is also included. (I-bii): k ¹ = 1, k ² = 0, and rings A ¹ and A ² are trans-1,4-cyclohexylene, 1,4-phenylene, 3-fluoro-1,4-phenylene , 3,5-difluoro-1,4-phenylene, naphthalene-2,6-diyl, 1,2,3,4-tetrahydronaphthalene-
2,6-diyl or decahydronaphthalene-2,6-
Diyl, K ¹ and K ² are a single bond,-(CH ₂ ) _2- , -C
OO— or a compound represented by —C≡C—, specifically, a compound of the general formula (I-12), more preferably, for example, a compound of the general formula (I-
It is a compound having a basic structure of 12a) to (I-12bd). Also,
When the ring A ² is a decahydronaphthalene-2,6-diyl ring, specifically, for example, the general formulas (I-12bc) and (I-12bc)
In the case of the compound bd), compounds substituted with (I-74b) to (I-74cv) are also preferable. It should be noted that a compound in which at least one of the hydrogen atoms present in these rings is substituted with a deuterium atom is also included.

[0139] In the general formula (I-2), R ¹ is an alkyl or alkenyl group having 2 to 7 carbon atoms, a Q ¹ is _{F, Cl, CF 3, OCF} 3 or CN, X ^1, X ²
H, F, Cl, CF ₃ or OCF ₃ , wherein W ^{1 to} W ³ are H,
In the case of F, Cl, CF ₃ or OCF ₃ , the following compounds are more preferred. (I-biii): k ³ = k ⁴ = 0 and the ring A ¹ is trans-
1,4-cyclohexylene, 1,4-phenylene, 3-
Fluoro-1,4-phenylene or 3,5-difluoro-1,4-phenylene, wherein K ¹ and K ⁴ are a single bond,
(CH ₂ ) _2- , -COO- or a compound of -C≡C-,
Specifically, the compounds of the general formula (I-21), more preferably, for example, the general formulas (I-21a) to (I-21aa), (I-21ak) to (I
-21em), (I-21eo)-(I-21ey), (I-21fa)-(I-2
1fk), (I-21fm)-(I-21fw), (I-21fy)-(I-21g
It is a compound having the basic structure of i).

[0140] In the general formula (I-3), R ¹ is an alkyl or alkenyl group having 2 to 7 carbon atoms, a Q ¹ is _{F, Cl, CF 3, OCF} 3 or CN, X ^1, X ²
H, F, Cl, CF ₃ or OCF ₃ , wherein W ^{1 to} W ³ are H,
In the case of F, Cl, CF ₃ or OCF ₃ , the following subgroup (I-
The compounds of biv) and (I-bv) are more preferred. (I-biv): k ¹ = k ² = 0, K ³ is a single bond, -CO
A compound represented by O- or -C≡C-, specifically, a compound of the general formula (I-31), more preferably, for example, a compound of the general formula (I-
31a) to (I-31ag). (I-bv): k ¹ = 1, k ² = 0, and ring A ¹ is 1,4-
Phenylene, 3-fluoro-1,4-phenylene or 3,5-difluoro-1,4-phenylene,
A compound in which K ¹ and K ³ are a single bond, —COO— or —C≡C—, specifically, a compound of the general formula (I-32), and more preferably, for example, compounds of the general formulas (I-32a) to (I-32a) I-32z), (I-32ai)
To (I-32dv).

In the general formula (I-4), R¹Is the number of carbon atoms
2-7 alkyl or alkenyl groups,¹But
F, Cl, CF_Three, OCF_ThreeOr CN and X¹, X^TwoBut
H, F, Cl, CF_ThreeOr OCF_ThreeIf, the following small group
Compounds of (I-bvi) to (I-bix) are more preferred. (I-bvi): k^Five= K⁶= K⁷= K⁸= 0 and K^FiveIs simple
If-(CH_Two)_Two-,-(CH_Two)_Four-, -COO-, or-
A compound in which C≡C—, specifically, a compound represented by the general formula (I-41):
Compounds, more preferably, for example, compounds of the general formulas (I-41a) to (I-4
It is a compound having the basic structure of 1ai). (I-bvii): k^Five= 1, k⁶= K⁷= K⁸= 0, ring A
¹Is trans-1,4-cyclohexylene, 1,4-phenyl
Phenylene, 3-fluoro-1,4-phenylene or 3,
5-difluoro-1,4-phenylene, and K¹, K^Five
Is a single bond,-(CH_Two)_Two-, -COO-, or -C≡C-
A compound of the general formula (I-42),
More preferably, for example, the general formulas (I-42a) to (I-42ag)
(I-42ak) to (I-42an), (I-42ap) to (I-42as),
(I-42au) to (I-42ax), (I-42az) to (I-42bc),
(I-42be) to (I-42bh), (I-42be) to (I-42bh),
Groups of (I-42bj) to (I-42bm), (I-42bo) to (I-42dp)
It is a compound of this structure. (I-bviii): k⁷= 1, k^Five= K⁶= K⁸= 0,
Ring A^ThreeIs trans-1,4-cyclohexylene, 1,4
-Phenylene, 3-fluoro-1,4-phenylene or
3,5-difluoro-1,4-phenylene,
K^Three, K^FiveIs a single bond,-(CH_Two)_Two-, -COO-, or-
A compound in which C≡C—, specifically, a compound of the general formula (I-43)
Compounds, more preferably, for example, compounds of the general formulas (I-43a) to (I-4
3bs), a compound with a basic structure of (I-42bo) to (I-42dp)
is there. (I-bix): decahydronaphthalene-2,6-diyl
The ring is -CF_Two-, -CH _Two-O-, -CH = CH-,-
CH = CF-, -CF = CF-, -CH = N-, -CF
= N-,> CH-O-,> C = CH-,> C = CF-,
> C = N-,> N-CH_Two-,> CH-CF <,> CF
-CF <,> C = C <, at least among substituents of Si
Compounds having one substituent, more preferably, for example,
General formulas (I-41a), (I-41o), (I-41s), (I-41t),
(I-41ab), (I-42a), (I-42d), (I-42g), (I-4
2j)-(I-42m), (I-42p), (I-42s), (I-42v),
(I-42y), (I-42ab), (I-42ae) to (I-42aj), (I
-42bo), (I-42br), (I-42bt), (I-42bx), (I-4
2ca), (I-42cd), (I-42ci) to (I-42ck), (I-42c
o)-(I-4cq), (I-43a)-(I-43c), (I-43g)-
(I-43i), (I-43l) to (I-43n), (I-43q) to (I-43
s), (I-43v) to (I-43x), (I-43aa) to (I-43ac)
Basic structure, decahydronaphthalene-2,6-
Compounds in which the diyl ring is substituted with (I-74b) to (I-74cv).
Of course, the hydrogen atoms present in these rings
Wherein at least one of the above is substituted with a deuterium atom
Including.

[0142] In the general formula (I-5), R ¹ is an alkyl or alkenyl group having 2 to 7 carbon atoms, a Q ¹ is _{F, Cl, CF 3, OCF} 3 or CN, W ^1, W ²
When it is H, F, Cl, CF ₃ or OCF ₃ , compounds of the following subgroups (I-bx) and (I-bxi) are more preferred. (I-bx): k ¹ = k ² = 0 and ring A ¹ is trans-
1,4-cyclohexylene, 1,4-phenylene, 3-
Fluoro-1,4-phenylene, 3,5-difluoro-
1,4-phenylene, naphthalene-2,6-diyl,
1,2,3,4-tetrahydronaphthalene-2,6-
A compound wherein K ¹ is a single bond, — (CH ₂ ) ₂ —, — (CH ₂ ) ₄ — or —COO—, specifically, a compound represented by the general formula ( I-51), more preferably, for example, compounds of the general formulas (I-51a) to (I-51a)
-51l) and (I-51p) to (I-51y). The ring A ¹ is decahydronaphthalene-2,6-
In the case of a diyl ring, specifically, for example, a compound represented by the general formula (I-51)
x) and (I-51y), (I-74b) to (I-7
Compounds substituted with 4cv) are also preferred. It should be noted that a compound in which at least one of the hydrogen atoms present in these rings is substituted with a deuterium atom is also included. (I-bxi): k ¹ = 1, k ² = 0, and rings A ¹ and A ² are trans-1,4-cyclohexylene, 1,4-phenylene, 3-fluoro-1,4-phenylene , 3,5-difluoro-1,4-phenylene, naphthalene-2,6-diyl, 1,2,3,4-tetrahydronaphthalene-
2,6-diyl or decahydronaphthalene-2,6-
Diyl, K ¹ and K ² are a single bond,-(CH ₂ ) ₂ -,-
A compound which is (CH ₂ ) ₄ — or —COO—. Specifically, it is a compound of the general formula (I-52), more preferably, for example, a compound having a basic structure of any of the general formulas (I-52a) to (I-52bd). When the ring A ² is a decahydronaphthalene-2,6-diyl ring, specifically, for example, a compound represented by the general formula (I-52bc):
In the case of the compound of (I-52bd), (I-74b) to (I-74c)
Compounds substituted with v) are also preferred. It should be noted that a compound in which at least one of the hydrogen atoms present in these rings is substituted with a deuterium atom is also included.

(I-bxii): In the formulas (I-1) to (I-5), when the rings A ^{1 to} A ⁴ are unsubstituted or substituted decahydronaphthalene-2,6-diyl rings Is (I-74a)
Compounds having a partial structure selected from (I-74dm) are preferred. More preferred are (I-74a) to (I-74l),
(I-74at), (I-74au), (I-74bk), (I-74by) ~
(I-74dm), and particularly preferred are (I-74a) and (I-7
4e), (I-74au), (I-74bk), (I-74ck), (I-74c
l), (I-74cn), (I-74cq), (I-74cr), (I-74c
t), (I-74cw) to (I-74dm). In particular, (I-74c
The compound having q) was superior in response to the compound having (I-74au), had a higher nematic phase-isotropic liquid phase transition temperature, and had extraordinary properties. It should be noted that a compound in which at least one of the hydrogen atoms present in the rings (I-74a) to (I-74cv) is replaced with a deuterium atom is also included.

The liquid crystal component A of the present invention comprises these small groups (0-b
i) containing one or more compounds selected from one or more of the subgroups of (0-biv), and subgroups (I-bi) to (I-bxi
One or more compounds selected from one, two or three or more subgroups of i) can be contained, but an effect can be obtained even if each is composed of only one compound from one subgroup. it can. In addition, small group (0-bi) to (0-biv), small group (Ib
Compounds having two or more structural features of the compounds shown in i) to (I-bxii) at the same time are more preferable. Liquid crystal component A
Are selected from the above-mentioned subgroups (0-bi) to (0-bi
v) and can be composed of the compounds shown in the above subgroups (I-bi) to (I-bxii). The liquid crystal composition of the present invention containing such a liquid crystal component A can expand the operating temperature range of liquid crystal display characteristics by improving compatibility, improving low-temperature storage, etc., reducing driving voltage and improving the temperature change. TN-LCD, STN-LC, which can achieve or improve relatively fast response to a predetermined driving voltage,
D, more improved electro-optical characteristics such as TFT-LCD can be obtained.

The general formula (I-) relating to the liquid crystal composition of the present invention
The liquid crystal component A comprising the compounds of 1) to (I-5), or the liquid crystal component A containing the compounds of the small groups (I-ai) to (I-bxii) described above, -ai) ~ (I-bxii)
The liquid crystal component A containing a compound capable of having two or more structural characteristics of at the same time is an unsubstituted or substituted naphthalene-2,6-diyl ring, decahydronaphthalene-2,6-diyl ring, It is characterized by a molecular structure having a partial structure of a 1,2,3,4-tetrahydronaphthalene-2,6-diyl ring. This feature results in a more plate-like structure than conventional compounds. Further, these rings have substituents such as F, Cl, etc., compared to 1,4 phenylene.
You can have more. For this reason, the compatibility is excellent, the phase transition temperature is relatively high compared to the molecular length, the birefringence is small compared to the high phase transition temperature, and the driving voltage is small compared to the magnitude of the dielectric anisotropy. lower, frequency dependence of the driving voltage is suppressed in the high frequency range, has the effect of reducing the temperature dependency of the driving voltage, the elastic constant adjusting the size of the particular Unlike conventional compound K ₁₁ and K ₂₂ Is excellent. General formulas (0-1) to (0-
The liquid crystal component A comprising the compound of 2) or the liquid crystal component A containing the compounds of the above-described subgroups (0-ai) to (0-biv) is further subgroup (0-ai) to (0-ai). -biv) The liquid crystal component A containing a compound capable of having two or more structural characteristics at the same time has further improved characteristics, and in particular, has the characteristics of being superior in reducing the saturation voltage and improving the response of the IPS mode. Have.

The liquid crystal composition of the present invention comprises, in addition to the liquid crystal component A, one or more compounds having a dielectric anisotropy of +2 or more.
It contains a liquid crystal component B containing more than one kind. The term "liquid crystal compound having a dielectric anisotropy greater than 2" used in the present invention has the following meaning. The chemical structure of the liquid crystal compound is rod-shaped, and has a core structure in which the central part has one to four six-membered rings. A terminal group substituted at a position corresponding to the direction, and at least one of the terminal groups present at both ends is a polar group, that is, for example, -F, -Cl, -N
_{O 2, -CF 3, -OCF 3} , -OCHF 2, -CN, -OC
N, -NCS, and the like. by this,
The optical anisotropy of the liquid crystal layer can be set to a predetermined value, can be electrically driven, and the operating temperature range can be widened.

As the liquid crystal component B, at least one compound having a dielectric anisotropy of +2 or more can be used, and the range of 3 to 40 is preferable, and the range of 3 to 15 is more preferable. Compounds having dielectric anisotropy of +2 to +8, compounds of +8 to +13, compounds of +14 to +18,
It is preferable to appropriately select and contain from compounds of +18 or more, and it is possible to obtain predetermined drive voltage and response characteristics. In this case, it is preferable to mix compounds having a dielectric anisotropy of +2 to +13 in a range of at most 30 or less,
More preferably, they are mixed in a range of 15 or less, and +1
The compounds of 4 to +18 are preferably mixed in at most 20 or less, more preferably 8 or less, and the compounds of +18 or more are preferably mixed in at most 15 or less. Preferably, they are mixed in a range of 10 or less. The use of the liquid crystal component B as described above gives a more favorable effect to the temperature characteristics of the display characteristics. More specifically, it is preferable that the temperature dependency such as the driving voltage, the contrast relating to the steepness, and the response is more preferable.

From such a viewpoint, the general formulas (II-1) to (II-1)
The more preferable form of the basic structure in the compound represented by -4) is a compound represented by the following general formulas (II-1a) to (II-4n).

[0149]

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[0150]

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[0151]

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[0152]

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[0153]

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Further, a more preferred form of the side chain group R ^{1 in} the general formulas (II-1) to (II-4) is as described in the above-mentioned general formula (I-6)
a) to (I-6bc).

Further, more preferred embodiments of the partial structural formula (II-5) of 1,4-phenylene having a polar group are represented by the following general formulas (II-5a) to (II-5r). Compound.

[0156]

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The compounds used below were distilled,
Column purification, removal of impurities using methods such as recrystallization,
A sufficiently purified product was used.

More specifically, when a general-purpose liquid crystal composition is intended, it is preferable to use the following compound as the liquid crystal component B. The effects of the invention can be obtained.

(II-ai): Formulas (II-1) to (II-ai)
In 4), compounds in which R ¹ is an alkenyl group having 2 to 5 carbon atoms, specifically, compounds represented by formulas (II-1a) to (II-4n)
Wherein the side chain group is (I-6ah) to (I-6bc), and the partial structure of the polar group is represented by any of the general formulas (II-5a) to (II-5).
r), more preferably the compounds of the general formulas (II-1a) to (II-1)
l), compounds having the basic structures of (II-2i) to (II-2ae), which can provide more improved electro-optical characteristics such as STN-LCD and TFT-LCD. (II-aii): In the general formulas (II-1) to (II-4),
A compound in which Q ¹ is F, Cl, or —OCF ₃ , specifically, a basic structure of general formulas (II-1a) to (II-4n),
The side chain group is (I-6a) to (I-6bc), and the partial structure of the polar group is represented by any of the general formulas (II-5d) to (II-5i), (II-5m) to (II-
5o), more preferably the compounds of the general formulas (II-1a) to (II-
1l), (II-2f) to (II-2q), (II-2u) to (II-2w),
Compounds having the basic structure of (II-2ab) to (II-4f). When these compounds are substantially used as a main component, the driving voltage of an active TFT-LCD or the like can be reduced or the high voltage holding ratio can be reduced. Is excellent. In addition, when Q ¹ is used in combination with a compound of CN and both are substantially the main components, the driving voltage, the steepness and the responsiveness of the TN-LCD, the STN-LCD, and the like, or the temperature characteristics thereof are excellent. .

(II-aiii): a compound of the formula (II-1) wherein P ² is — (CH ₂ ) ₂ — or — (CH ₂ ) ₄ —, specifically, a compound of the formula (II-1c), (II-1d)
The basic structure of (II-1g) or (II-1h), wherein the side chain group is (I-6a) to (I-6bc), and the partial structure of the polar group is represented by the general formula (II-5a) ~ (II-5r). (II-aiv): in the compound of the general formula (II-1),
^A compound in which ¹ is 1, specifically, a compound represented by the general formula (II-1e):
The basic structure of (II-1l), wherein the side chain group is (I-6a) to (I-6a)
-6bc), wherein the partial structure of the polar group is represented by the general formula (II-5a)
~ (II-5r), which are suitable for applications requiring a low driving voltage and requiring a relatively small birefringence.

(II-av): a compound of the formula (II-2) wherein at least one of Y ¹ , Y ² , W ¹ and W ² is F, specifically, a compound of the formula (II-av): II-2a), (II-2
c), (II-2f), (II-2i), (II-2l), (II-2o),
(II-2r), (II-2u), (II-2x), (II-2y), (II-2
ab) and (II-2ac), wherein the side chain group is (I-6
a) to (I-6bc), wherein the polar group has a partial structure of the general formula (II-5b), (II-5c), (II-5e), (II-5f), or (II-5
h), (II-5i), (II-5k), (II-5l), (II-5n),
Compounds of (II-5o), (II-5q) and (II-5r) or compounds of the general formulas (II-2b), (II-2d), (II-2e), (II-2g),
(II-2h), (II-2j), (II-2k), (II-2m), (II-2
n), (II-2p), (II-2q), (II-2s), (II-2t),
(II-2v), (II-2w), (II-2z), (II-2aa), (II-
2ad) and (II-2ae), wherein the side chain group is (I-6
a) to (I-6bc), wherein the partial structure of the polar group is a compound of the general formulas (II-5a) to (II-5r), which is suitable for use in reducing the driving voltage. (II-avi): in the compound of the general formula (II-2), p
^A compound in which ¹ is 1 and P ¹ is —C 、 C—, specifically, the general formulas (II-2o) to (II-2q), (II-2ab) to (II-2)
ae) wherein the side chain group is (I-6a) to (I-6b)
c) wherein the polar group has a partial structure represented by the general formula (II-5a):
It is a compound of (II-5r), which is suitable for applications where the driving voltage is low and a relatively large birefringence is required. (II-avii): In the compound of the general formula (II-2),
P ² is a single bond or — (CH ₂ ) ₂ —, and P ¹ is —COO—
The compounds represented by the general formulas (II-2l) to (II-2)
n), (II-2r) to (II-2t), (II-2y) to (II-2aa), wherein the side chain groups are (I-6a) to (I-6bc). The partial structure of the polar group is represented by any of the general formulas (II-5a) to (II-5r)
Which is suitable for applications where the driving voltage is low.

(II-aviii): In the compound of the formula (II-3), at least one of Y ¹ , Y ² , W ^{1 to} W ⁴ is F
A compound represented by the general formula (II-3a) or (II-3
j), (II-3k), (II-3s), and (II-3t), each of which has a side chain group of (I-6a) to (I-6bc) and a polar group portion The structure has the general formula (II-5b), (II-5c), (II-5
e), (II-5f), (II-5h), (II-5i), (II-5k),
(II-5l), (II-5n), (II-5o), (II-5q), (II-5
r) or a compound of the general formulas (II-3b) to (II-3i),
(II-3l) to (II-3r), (II-3u) to (II-3x), wherein the side chain groups are (I-6a) to (I-6bc),
A compound having a partial structure of a polar group represented by any one of formulas (II-5a) to (II-5r), which is suitable for use in reducing a driving voltage. (II-aix): In the compound of the general formula (II-3),
³ is -C≡C-, specifically, a compound represented by the general formula (II-
3k) to (II-3r), wherein the side chain group is (I-6
a) to (I-6bc), wherein the partial structure of the polar group is a compound of the general formulas (II-5a) to (II-5r), which requires a low driving voltage and a relatively large birefringence. Suitable for application. (II-ax): In the compound of the aforementioned general formula (II-3), P ¹
Is a single bond or —C≡C—, and P ³ is —COO—, specifically, a compound represented by the general structure (II-3j) or (II-3y), Is (I-6a) to (I-6bc), and the partial structure of the polar group is represented by the general formula (II-5a) to (II-5r)
Compound.

(II-axi): a compound represented by the above general formula (II-4), specifically, a basic structure of the general formulas (II-4a) to (II-4n), The group is (I-6a) to (I-6bc), and the partial structure of the polar group is represented by the general formula (II-5a) to (II-5r)
Compound.

(II-axii): The above-mentioned formulas (II-1) and (II-axii)
2) and compounds of the formula (II-4), wherein the rings B ^{1 to} B ³ are trans-1,4-cyclohexylene and at least one of the hydrogen atoms of the ring is substituted with a deuterium atom; Specifically, general formulas (II-1a) to (II-1l), (II-2
i) to (II-2ae) and (II-4f), wherein the side chain groups are (I-6a) to (I-6bc), and the partial structure of the polar group is represented by the general formula (II -5a) to (II-5r).

A nematic liquid crystal composition containing one or more compounds selected from the subgroups (II-ai) to (II-axii) is preferable.

When a liquid crystal composition suitable for a TN-LCD or an STN-LCD is intended, it is preferable to use the following compound for the liquid crystal component B. The effect of the present invention can be obtained by combining them.

(II-bi): In the above formula (II-1), R ¹ is an alkyl or alkenyl group having 2 to 5 carbon atoms, p ¹ is 0, and Q ¹ is -CN. Certain compounds, specifically the basic structures of the general formulas (II-1a) to (II-1d), wherein the side chain groups are (I-6a) to (I-6d), (I-6ah)
-(I-6am), (I-6av)-(I-6bc), wherein the polar group has a partial structure of the general formulas (II-5a) to (II-5c). (II-bii): In the formula (II-1), R ¹ is an alkyl group or an alkenyl group having 2 to 5 carbon atoms,
¹ is 1, Q ¹ is F or —CN, and Y ¹ and Y ² are H or F. Specifically, compounds represented by general formulas (II-1e) to (I-1
The basic structure of (I-1l), wherein the side chain groups are (I-6a) to (I-6a).
d), (I-6ah) to (I-6am), (I-6av) to (I-6bc), wherein the polar group has a partial structure of the general formula (II-5a) to (II-5
Compound of f).

(II-biii): In the formula (II-2), R ¹ is an alkyl or alkenyl group having 2 to 5 carbon atoms, p ¹ is 0, and Q ¹ is -CN. Yes, Y ¹ ,
A compound in which Y ² , W ¹ , and W ² are H or F, specifically, the basic structures of the general formulas (II-2a) to (II-2h), wherein the side chain group is (I-6a) ~ (I-6d), (I-6ah) ~ (I-6am), (I-6a
v) Compounds of the formulas (II-5a) to (II-5c), wherein the polar group has a partial structure. (II-biv): In the formula (II-2), R ¹ is an alkyl group or an alkenyl group having 2 to 5 carbon atoms, and p
¹ is 1, P ² is a single bond, — (CH ₂ ) ₂ — or —COO
Wherein P ¹ is a single bond, —COO— or —C≡C—, Q ¹ is F or —CN, and Y ¹ , Y ² , W ¹ , and W ² are H or F. Specifically, the general formula (II-2i)
~ The basic structure of (II-2ae), wherein the side chain group is (I-6a) ~
(I-6d), (I-6ah)-(I-6am), (I-6av)-(I-6b
c) wherein the polar group has a partial structure represented by the general formula (II-5a):
A compound of (II-5f).

(II-bv): In the above formula (II-3), R ¹ is an alkyl group or alkenyl group having 2 to 5 carbon atoms, ^one of P ¹ and P ³ is a single bond, The other is a compound having a single bond, —COO— or —C≡C—, specifically, a basic structure of general formulas (II-3a) to (II-3x), wherein the side chain group is (I- 6a)-(I-6d), (I-6ah)-(I-6a
m), (I-6av) to (I-6bc), wherein the partial structure of the polar group is a compound of the general formulas (II-5a) to (II-5r). (II-bvi): In the formula (II-3), R ¹ is an alkyl group or an alkenyl group having 2 to 5 carbon atoms,
¹ , Y ² , a compound in which W ^{1 to} W ⁴ are H or F, specifically, a basic structure of the general formulas (II-3a) to (II-3x),
The side chain groups are (I-6a) to (I-6d), (I-6ah) to (I-6am),
(I-6av) to (I-6bc), wherein the partial structure of the polar group is a compound of the general formulas (II-5a) to (II-5r).

(II-bvii): a compound in which R ¹ is an alkyl group or alkenyl group having 2 to 7 carbon atoms and p ² + p ³ is 0, specifically, Is
It is a basic structure of the general formulas (II-4a) and (II-4h), wherein the side chain groups are (I-6a) to (I-6f), (I-6ah) to (I-6am), -
6av) to (I-6bc), wherein the partial structure of the polar group is a compound of the general formulas (II-5a) to (II-5r).

(II-bviii): The above-mentioned formulas (II-1) and (II-bviii)
In the compound of 2), rings B ¹ and B ² are trans-1,4.
-A compound in which at least one of the hydrogen atoms of the ring is substituted with a deuterium atom, specifically, a compound represented by any of the general formulas (II-1a) to (II-1l) and (II-2i) ~ (II-
2ae), wherein the side chain groups are (I-6a) to (I-6b).
c) wherein the polar group has a partial structure represented by the general formula (II-5a):
A compound of (II-5r).

One or more compounds selected from the subgroups (II-bi) to (II-bviii) are contained, and the content of the compound as a liquid crystal component B is 10 to 10
A nematic liquid crystal composition having 0% by weight is preferred.

Further, STN-LCD requiring high reliability
When a liquid crystal composition suitable for TFT-LCD, IPS, STN-LCD, etc. for active use is used, it is preferable to use the following compound as the liquid crystal component B. The effect of the present invention can be obtained by combining with A.

(II-ci): In the formula (II-1), R ¹ is an alkyl group or alkenyl group having 2 to 5 carbon atoms, p ¹ is 1, and P ¹ and P ² are One is a single bond, the other is a single bond, —COO—, — (CH ₂ ) ₂ —, or — (CH ₂ ) ₄ , and Q ¹ is F, Cl, CF ₃ , OCF ₃
Or a compound wherein OCF ₂ H and one or ^two of Y ¹ and Y ² are F, specifically, compounds represented by general formulas (II-1e) to (II-1k)
Wherein the side chain groups are (I-6a) to (I-6d),
(I-6ah) to (I-6am) and (I-6av) to (I-6bc), wherein the polar group has a partial structure of the general formulas (II-5d) to (II-5r).

(II-cii): In the above formula (II-2), R ¹ is an alkyl or alkenyl group having 2 to 5 carbon atoms, p ¹ is 1, P ² is a single bond, − (CH ₂ ) ₂
— Or —COO—, P ¹ is a single bond, —COO— or —C≡C—, and Q ¹ is F, Cl, CF ₃ , OCF ₃
Or OCF ₂ H, a compound in which one or ^two of Y ¹ and Y ² are F and W ¹ and W ² are H or F, specifically,
The basic structures of general formulas (II-2i) to (II-2ae), wherein the side chain groups are (I-6a) to (I-6d), (I-6ah) to (I-6am),
(I-6av) to (I-6bc), wherein the partial structure of the polar group is a compound of the general formulas (II-5d) to (II-5r).

(II-ciii): In the above formula (II-3), R ¹ is an alkyl group or alkenyl group having 2 to 5 carbon atoms, ^one of P ¹ and P ³ is a single bond, The other is a single bond, —COO— or —C≡C—, and Q ¹ is F, C
1, CF ₃ , OCF ₃ or OCF ₂ H, a compound in which one or two of Y ¹ and Y ² are F, and W ^{1 to} W ⁴ are H or one or more of F, Are represented by the general formulas (II-3a) to (II-
3x), wherein the side group is (I-6a) to (I-6a).
d), (I-6ah) to (I-6am), (I-6av) to (I-6bc), wherein the polar group has a partial structure of the general formula (II-5e) or (II-5
f), (II-5h), (II-5i), (II-5k), (II-5l),
Compounds of (II-5n), (II-5o), (II-5q) and (II-5r).

(II-civ): The above-mentioned formulas (II-1) and (II-civ)
In the compound of 2), rings B ¹ and B ² are trans-1,4.
A compound in which at least three of the hydrogen atoms of this ring are substituted with deuterium atoms, specifically, compounds represented by the general formulas (II-1a) to (II-1l), (II-2i ) ~ (II-
2ae), wherein the side chain groups are (I-6a) to (I-6b).
c) wherein the polar group has a partial structure represented by the general formula (II-5a):
A compound of (II-5r).

It contains one or more compounds selected from the compounds represented by the subgroups (II-ci) to (II-civ), and the content of the compound as the liquid crystal component B is 10 to 100.
A nematic liquid crystal composition which is in a percentage by weight is preferred.

A particularly preferred embodiment of the compounds represented by formulas (II-1) to (II-4) is a liquid crystal component B containing the following compounds. (II-di): a compound in which R ¹ in the general formulas (II-1) to (II-4) is an alkyl group having 2 to 7 carbon atoms. General formula (II-
^1), (R 1 in II-2) is _{C p H 2p + 1 -CH =} CH-
A compound which is an alkenyl group represented by (CH ₂ ) _q (p = 0, 1, 2, 3 q = 0, 2). Specifically, the general formula (II-1a),
(II-1e), (II-2a), (II-2c), (II-2d), (II-2
i), (II-2l), (II-2o), (II-3a), (II-3l),
The compounds having the basic structures (II-4a) to (II-4c) and (II-4e) preferably have these groups, and at least one compound having an alkyl group and / or an alkenyl group in the liquid crystal component B By containing, viscosity and viscoelasticity can be reduced. (II-dii): It is preferable to select a compound in which Q ¹ in the general formulas (II-1) to (II-4) is F, Cl, —OCF ₃ or —CN, and to include at least one or more compounds. (II-diii): When high-speed response is important, the general formula (II-diii)
1) ~ (II-4) Q 1 in the F, -OCF ₃ or -CN
The general formulas (II-1a), (II-1e), (II-2a), and (II-
2c), (II-2d), (II-2i), (II-2l), (II-2o),
It is preferable to use the compounds of (II-3a), (II-3l) and (II-4a) frequently in the liquid crystal component B. (II-div): When a larger birefringence is required, Q ¹ in the general formulas (II-2) to (II-4) is Cl or -OC.
Compounds of the general formulas (II-2a) to (II-4d) which are F ₃ and —CN, and / or P ¹ in the general formulas (II-2) and (II-3),
General formulas (II-2f) to (II-2h) wherein P ³ is —C≡C—,
(II-2o) to (II-2q), (II-2ab) to (II-2ae), (II
It is preferred that the compounds of (-3k) to (II-3x) are frequently used in the liquid crystal component B. (II-dv): When a lower drive voltage is required, Q ¹ in the general formulas (II-1) to (II-4) is F, Cl, or -CN.
And the general formula (II) in which one of the sets of Y ¹ and Y ² is always F
It is preferred that the compounds of -1a) to (II-4g) are frequently used in the liquid crystal component B. (II-dvi): Compounds in which hydrogen atoms in the cyclohexane ring of the general formulas (II-1) and (II-2) are substituted with deuterium atoms can be used. It is preferable to contain at least one compound substituted with a deuterium atom, since it is useful for adjusting the constant and adjusting the pretilt angle corresponding to the alignment film. (II-dvii): “General formulas (II-1), (II-2), (II-4)
A component of p ¹ ~p ³ 2 ring compound 0 "in the" general formula (II-1), p ¹ is 1 compound in ^{(II-2), p 2} + p in Formula (II-4) The mixing ratio of the compound of ³ with 1 and / or the component of the tricyclic compound of the general formula (II-3) in the liquid crystal component B can be appropriately selected from the range of 0 to 100 to 100 to 0, and is higher. When a nematic phase-isotropic liquid phase transition temperature is required, the compound represented by the general formulas (II-1) and (II-2) wherein p ¹ is 1 and the compound represented by the general formula (II-4) p ² + p
A compound wherein ³ is 1 and / or a tricyclic compound of the general formula (II-3) "
Is preferably used.

One or more of the compounds selected from the subgroups (II-di) to (II-dvii) are contained, and the content of the compound as a liquid crystal component B is 10 to 100.
A nematic liquid crystal composition which is in a percentage by weight is preferred.

The liquid crystal component B containing these compounds (II-ai) to (II-dvii) has a characteristic of being mixed well with the liquid crystal component A, which is an essential component. It is useful for improving the temperature dependency or the response. In particular, the general formulas (II-1a) to (II-1g) and the general formulas (II-2)
a) to (II-2q), general formulas (II-2u) to (II-2x), general formulas (II-2ab) to (II-2ae), general formulas (II-3a) to (II-3)
d), general formulas (II-3l) to (II-3r), general formulas (II-4a) to
The compound (II-14e) is excellent in at least one of these effects, and this effect can be obtained even with a small content of 0.1 to 25% by weight based on the total amount of the nematic liquid crystal composition of the present invention. be able to.

The liquid crystal component B of the present invention comprises these subgroups (II-a
One or more compounds selected from one, two or three or more subgroups of i) to (II-dvii) can be contained, The effect can be obtained. Further, compounds capable of simultaneously having two or more structural characteristics of the compounds shown in the subgroups (II-ai) to (II-dvii) are more preferable. The liquid crystal component B can be composed of the compounds shown in the above subgroups (II-ai) to (II-dvii) according to the desired purpose.

The general formula (II-) related to the liquid crystal composition of the present invention
1) A liquid crystal component B containing the compound of (II-4) as a main component,
Alternatively, the liquid crystal component B containing the compounds of the small groups (II-ai) to (II-dvii) described above is further combined with the small group (II-ai)
The liquid crystal composition of the present invention in which a liquid crystal component B containing a compound capable of simultaneously having two or more structural characteristics of (II) to (II-dvii) is combined with a liquid crystal component A has improved compatibility and low temperature. The operating temperature range of the liquid crystal display characteristics can be expanded by improving storage, etc., the drive voltage can be reduced and its temperature change can be improved, and relatively quick response to a predetermined drive voltage can be achieved or improved. TN-LCD, STN-LCD, TFT-LCD, and the like, using GaN as a constituent material, can obtain more improved electro-optical characteristics.

The effects of the liquid crystal component A and the liquid crystal component B described above can be obtained even when the content of the liquid crystal component C described later is very small. For the purpose of particularly lowering the driving voltage, the content of the liquid crystal component C can be reduced to 10% by weight or less. In this case, it is preferable to make the viscosity of the liquid crystal component C as low as possible, and the drive voltage is hardly increased or stays in a small range, so that the response speed can be efficiently improved. For example, when the amount of the liquid crystal component C is small, as a method for achieving this effect with the liquid crystal component B, Q ¹ in the general formulas (II-1) to (II-4) is F, Cl, or -O.
CF ₃ , a compound represented by —CN, or a compound represented by any of the general formulas (II-1) to (II)
-4) a compound in which Y ¹ and Y ² are F, or P ¹ in the general formulas (II-2) and (II-3) is a single bond, —COO
It is preferable that the liquid crystal component B contains any of the compounds represented by —, —C≡C—, or the compound represented by the formula (II-1) in which p ¹ is 0. In particular, the general formula (II-1)
Compounds in which Q ¹ in (II-4) is F or —CN and / or Y ¹ and Y ² in formulas (II-1) to (II-4) are F are preferable.

The liquid crystal composition of the present invention may contain at most 85% by weight of a liquid crystal component C comprising a compound having a dielectric anisotropy of -10 to 2 in addition to the liquid crystal component A which is an essential component. preferable. Preferred examples of the liquid crystal compound having a dielectric anisotropy of -10 to 2 described in the present invention include:
It is shown below. That is, the chemical structure of the liquid crystal compound is rod-shaped, the central portion has a core structure having 1 to 4 six-membered rings, and the six-membered rings located at both ends in the major axis direction of the central portion are formed of liquid crystal molecules. It has a terminal group substituted at a position corresponding to the major axis direction, and both terminal groups present at both ends are non-polar groups, that is, for example, an alkyl group, an alkoxy group, an alkoxyalkyl group, an alkenyl group, an alkenyloxy group. And alkanoyloxy groups. The liquid crystal component C is preferably composed of at least one kind and at most 40 kinds, more preferably at least two kinds and at most 20 kinds.

From such a viewpoint, the general formulas (III-1) to (I-1)
More preferred forms of the basic structure in the compound represented by II-4) are the following general formulas (III-1a) to (III-4ac)
It is a compound represented by these. As the liquid crystal component C of the present invention,
It is preferable to contain 10 to 100% by weight of a compound selected from the compounds represented by formulas (III-1) to (III-4). The liquid crystal component C containing these compounds is characterized by being well mixed with the liquid crystal component A containing compounds of the general formulas (0-1) to (0-2) and (I-1) to (I-4). TN-LCD, STN-LCD, TFT-LCD, which is useful for improving the nematic phase at low temperature, and can adjust the desired birefringence.
It is excellent in improving steepness, response, and temperature characteristics thereof.

From such a viewpoint, the general formulas (III-1) to (I-1)
More preferred forms of the basic structure in the compound represented by II-4) are the following general formulas (III-1a) to (III-4ac)
It is a compound represented by these.

[0188]

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[0189]

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[0190]

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[0191]

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[0192]

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[0193]

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[0194]

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Formulas (III-51) for the side chain groups R ² and R ³ ,
A more preferred embodiment of (II-52) is a compound represented by the following general formula (I)
II-5a) to (III-5bf).

[0196]

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The compounds used below were distilled,
Column purification, removal of impurities using methods such as recrystallization,
A sufficiently purified product was used.

The liquid crystal component C has the general formulas (III-1) to (I)
The compound represented by the general formula (III-1) can be contained, but may be constituted by the compound represented by the general formula (III-1) or the compound represented by the general formula (III-2) And may be composed of the compound represented by the general formula (III-3), or may be composed of the compound represented by the general formula (III-4). May be. More preferably, it contains one or more compounds selected from any of the compounds represented by formulas (III-1) to (III-3), and the content of the compound is 5 to 100% by weight. % Of the liquid crystal component C.

More specifically, when a general-purpose liquid crystal composition is intended, the following compound is preferably used as the liquid crystal component C. When such a liquid crystal component C is used as the liquid crystal component A or when the liquid crystal component C is used. The effect of the present invention can be obtained by combining with the liquid crystal component B.

(III-ai): Formulas (III-1) to (III)
-4), wherein R ² is an alkenyl group having 2 to 5 carbon atoms, specifically, the compounds represented by the general formulas (III-1a) to (III-
4ac), wherein the side chain group R ³ is (III-5a) to
(II-5bf), wherein the side group R ² is (III-5ak) to (II-5ap),
(III-5ar)-(III-5aw), (III-5ay)-(III-5bf)
The compound has improved electro-optical properties such as STN-LCD, TFT-LCD, etc. by improving the response by reducing the viscosity and viscoelasticity, and improving the nematic phase-isotropic liquid phase transition temperature. Can be obtained. (III-aii): a compound in which R ³ is a linear alkenyl group or an alkenyloxy group having 2 to 7 carbon atoms in the general formulas (III-1) to (III-4), specifically, The basic structure of the general formulas (III-1a) to (III-4ac), wherein the side chain group R ² is (III-5a) to (II-5bf) and the side chain group R ³ is (III-5a
k) to (III-5bf), which can improve the responsiveness by reducing viscosity and viscoelasticity, improve the nematic phase-isotropic liquid phase transition temperature, and can be used for STN-LCD, TFT-LCD And so on can be obtained.

(III-aiii): In the compound of the above general formula (III-1), m ¹ is 0 and M ² is a single bond or-(C
H ₂ ) ₂ —, specifically, the compound represented by the general formula (III-1)
a) and (III-1c), wherein the side-chain groups R ² and R ³
Is a compound of (III-5a) to (III-5bf). (III-aiv): in the compound of the general formula (III-1),
a compound wherein m ¹ is 1, specifically the compound represented by the general formula (III-1d)
A compound having the basic structure of (III-1r), wherein the side-chain groups R ² and R ³ are (III-5a) to (III-5bf).

(III-av): The compound represented by the formula (III-2), specifically, the compounds represented by the formulas (III-2a) to (III-2)
o) wherein the side-chain groups R ² and R ³ are (III-5a)
~ (III-5bf).

(III-avi): In the compound of the above general formula (III-3), at least one of Z ¹ , Z ² and W ^{1 to} W ³ is F
A compound represented by the general formula (III-3b) or (III-
3c), (III-3e), (III-3g), (III-3i)-(III-3
l), (III-3n), (III-3r)-(III-3u), (III-3
w), (III-3y)-(III-3ab), (III-3ad)-(III-3
ai), (III-3al) to (III-3aq), (III-3au) to (III
-3az), (III-3bk), (III-3bl), (III-3bn)-(I
II-3bs), (III-3bu), (III-3bv), (III-3by) ~
Compounds having the basic structure of (III-3ch), (III-3ck) to (III-3dc), wherein the side chain groups R ² and R ³ are (III-5a) to (III-5bf). (III-avii): a compound of the above formula (III-3) wherein Z ³ is F or —CH ₃ , specifically, formulas (III-3m) to (III-3o), III-3v), (III-3
w), (III-3ai), (III-3aj), (III-3aq)-(III-
3as), (III-3az)-(III-3bb), (III-3bm), (II
I-3bq), (III-3cg), wherein the side group R
^2. Compounds in which R ³ is (III-5a) to (III-5bf). (III-aviii): a compound in which m ¹ is 0 and M ³ is a single bond in the compound of the general formula (III-3), specifically, the compounds of the general formulas (III-3a) to (III-avi) A compound having the basic structure 3c), wherein the side chain groups R ² and R ³ are (III-5a) to (III-5bf). (III-aix): in the compound of the general formula (III-3),
m ¹ is 1, M ¹ is a single bond, —OCO—, —CH ₂ O
_{-, - OCH 2 -, -} (CH 2) 2 -, - (CH 2) 4 -, - C
_{H = CH- (CH 2) 2} -, - (CH 2) 2 -CH = CH -, -
CH = N-, -CH = NN = CH-, -N (O) = N
-, -CH = CH- or -CF = CF-,
Specifically, for example, general formulas (III-3q) to (III-3w),
(III-3ac)-(III-3bc), (III-3be), (III-3b)
g), (III-3bi)-(III-3bs), (III-3bw), (III-
3ci) to (III-3dc), (III-3de), and (III-3dh), wherein the side chain groups R ² and R ³ are (III-5a) to (III-5b).
Compound of f). (III-ax): In the compound of the general formula (III-3),
M ¹ is —COO— or —C≡C—, and M ³ is —OCO
_{-, - CH 2 O -,} - OCH 2 -, - (CH 2) 2 -, - (C
_{H 2) 4 -, - CH} = CH- (CH 2) 2 -, - (CH 2) 2 -C
H = CH-, -CH = N-, -CH = NN-CH =,
-N (O) = N-, -CH = CH-, -CF = CF- or -C≡C-, for example, compounds represented by general formulas (III-3bf), (III-3bh), (III-3df), (III-3dg)
Wherein the side chain groups R ² and R ³ are (III-5a) to
A compound of (III-5bf).

(III-axi): a compound represented by formula (III-4), specifically, formulas (III-4a) to (III-4a)
c) wherein the side-chain groups R ² and R ³ are (III-5a)
~ (III-5bf).

(III-axii): Formulas (III-1) to (III)
In the compound of the formula (4), the rings C ¹ -C ³ are trans-1,4
-Cyclohexylene, in which at least one of the hydrogen atoms of the ring is replaced by a deuterium atom, specifically, compounds represented by formulas (III-1a) to (III-2)
o), (III-3q)-(III-3bi), (III-4c), (III-4
d), (III-4h), (III-4r), (III-4s), (III-4
w) wherein the side chain groups R ² and R ³ are (III-5a)
~ (III-5bf).

Nematic liquid crystal compositions containing one or more compounds selected from the subgroups (III-ai) to (III-axii) are preferred.

A preferred embodiment of the compounds represented by formulas (III-1) to (III-4) is a liquid crystal component C containing the following compounds.

(III-bi): in the general formula (III-1)
And R^TwoIs an alkyl group having 1 to 5 carbon atoms or a carbon atom
An alkenyl group of the formulas 2 to 5,^ThreeHas 1 to 1 carbon atoms
An alkyl group having 5 carbon atoms, an alkoxy group having 2 to 5 carbon atoms,
A alkenyl group or an alkenyloxy group, m¹Is 0
M^TwoIs a single bond, -COO- or-(CH_Two)_Two-
Compounds, specifically, compounds of the general formulas (III-1a) to (III-1c)
A basic structure, wherein a side-chain group R ^TwoIs (III-5a)-(III-5
e), (III-5ak) to (III-5ap), wherein the side group R^ThreeBut
(III-5a) to (III-5e), (III-5g) to (III-5l),
(III-5ak)-(III-5ap), (III-5ar)-(III-5a)
w), compounds of (III-5ay) to (III-5bf). (III-bii): In the general formula (III-1), R^TwoBut charcoal
An alkyl group having 1 to 5 carbon atoms or an alkyl group having 2 to 5 carbon atoms
A alkenyl group;^ThreeIs alkyl having 1 to 5 carbon atoms
Groups, alkoxy groups, alkenyl groups having 2 to 5 carbon atoms,
An alkenyloxy group, m¹Is 1 and the ring C¹Is
Lance-1,4-cyclohexylene;¹And M^Twoof
One is a single bond, the other is a single bond, -COO- or-
(CH_Two)_TwoA compound represented by the general formula (III-1)
d) The basic structure of (III-1g) to (III-1j),
Chain group R^TwoAre (III-5a) to (III-5e), (III-5ak) to (II
I-5ap) wherein the side group R^ThreeIs (III-5a)-(III-5
e), (III-5g)-(III-5l), (III-5ak)-(III-5a)
p), (III-5ar)-(III-5aw), (III-5ay)-(III-
The compound of 5bf).

(III-biii): In the formula (III-2), R ² is an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and R ³ is 1
And C 5 -C 5 alkyl, alkoxy, C ² -C 5 alkenyl and alkenyloxy and the ring C ² is trans-1,4-cyclohexylene or trans-1,4
-Cyclohexenylene, m ¹ is 0, and M ² is a single bond, —COO— or — (CH ₂ ) ₂ —, specifically, compounds represented by the general formulas (III-2a) and (III -2d) and (III-2e), wherein the side chain group R ² is (III-5a) to (III-5
e), (III-5ak) to (III-5ap), wherein the side chain group R ³ is (III-5a) to (III-5e), (III-5g) to (III-5l),
(III-5ak)-(III-5ap), (III-5ar)-(III-5a)
w) Compounds of (III-5ay) to (III-5bf). (III-biv): In the formula (III-2), R ² is an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and R ³ is 1 to 5 carbon atoms. An alkyl group, an alkoxy group, an alkenyl group having 2 to 5 carbon atoms,
Ring C ^2, alkenyloxy group trans-1,4
Compounds that are cyclohexylene or trans-1,4-cyclohexenylene, m ¹ is 1, and one of M ¹ and M ² is a single bond, specifically, compounds represented by general formulas (III-2f) to (III-2f). II
I-2i), wherein the side group R ² is (III-5a) to
(III-5e), (III-5ak) to (III-5ap), wherein the side chain group R ³ is (III-5a) to (III-5e), (III-5g) to (III-5
l), (III-5ak)-(III-5ap), (III-5ar)-(III-
5aw), (III-5ay) to (III-5bf).

(III-bv): In the above formula (III-3), R ² is an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and R ³ is 1 to
5 alkyl groups, alkoxy groups, alkenyl groups having 2 to 5 carbon atoms, alkenyloxy groups, m ¹ is 0, M ³ is a single bond, —C≡C— or —CH 又 は N—N = C
A compound represented by H-, specifically, a compound represented by the general formula (III-3a):
(III-3c), (III-3h) to (III-3p), wherein the side chain group R ² is (III-5a) to (III-5e), (III-5ak)
To (III-5ap), wherein the side group R ³ is (III-5a) to (II-5ap).
I-5e), (III-5g)-(III-5l), (III-5ak)-(III
-5ap), (III-5ar)-(III-5aw), (III-5ay)-(I
The compound of II-5bf). (III-bvi): In the formula (III-3), R ² is an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and R ³ is 1 to 5 carbon atoms. An alkyl group, an alkoxy group, an alkenyl group having 2 to 5 carbon atoms,
An alkenyloxy group, m ¹ is 1, M ¹ is a single bond, — (CH ₂ ) ₂ —, —COO— or —C≡C—,
Compounds in which M ³ is a single bond, —COO— or —C≡C—, specifically, compounds represented by the general formulas (III-3q) to (III-3bb),
II-3bd) to (III-3bg), (III-3bj) to (III-3ch),
(III-3cj) ~ a basic structure of (III-3di), the side chain group R ² is (III-5a) ~ (III -5e), (III-5ak) ~ (III-5a
p) wherein the side group R ³ is (III-5a) to (III-5e),
(III-5g)-(III-5l), (III-5ak)-(III-5ap),
(III-5ar)-(III-5aw), (III-5ay)-(III-5bf)
Compound. (III-bvii): In the formula (III-3), R ² is an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and R ³ is 1 to 5 carbon atoms. An alkyl group, an alkoxy group, an alkenyl group having 2 to 5 carbon atoms,
An alkenyloxy group, m ¹ is 1, M ¹ and M ³
Is a single bond, the other is a single bond or —C≡C—, and at least one of W ¹ and W ² is F, specifically, a compound represented by the general formula (III-3r), III-3t), (III-3a
u), (III-3aw), (III-3ay), (III-3bk), (III-
3bn), (III-3bo), (III-3bz), (III-3cb), (II
I-3ce), (III-3cf), (III-3cu), (III-3cx),
(III-3cz), wherein the side chain group R ² is (III-5cz)
a) to (III-5e), (III-5ak) to (III-5ap), wherein the side chain group R ³ is (III-5a) to (III-5e), (III-5g)
~ (III-5l), (III-5ak) ~ (III-5ap), (III-5a
r) to (III-5aw) and (III-5ay) to (III-5bf). (III-bviii): In the formula (III-3), R ² is an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and R ³ is 1 to 5 carbon atoms. alkyl group, an alkoxy group, an alkenyl group having 2 to 5 carbon atoms, an alkenyloxy group, compound either Z ^2, Z ³ is F, substituted with CH _3, specifically, the general formula (I
II-3c), (III-3f), (III-3g), (III-3j), (III
-3l) to (III-3o), (III-3s), (III-3u) to (III-3
w), (III-3z), (III-3ab), (III-3ae), (III-3
ag), (III-3ai), (III-3aj), (III-3am), (III
-3ao), (III-3aq)-(III-3as), (III-3av), (I
II-3ax), (III-3az)-(III-3bb), (III-3bl),
(III-3bm), (III-3bp) to (III-3bs), (III-3b
v), (III-3ca), (III-3cc), (III-3cd), (III-
3cg), (III-3ch), (III-3cm)-(III-3cs), (II
I-3cv) ~ (III- 3cx), (III-3da) ~ ( a basic structure of a III-3DC), the side chain group R ² is (III-5a) ~ (III -5
e), (III-5ak) to (III-5ap), wherein the side chain group R ³ is (III-5a) to (III-5e), (III-5g) to (III-5l),
(III-5ak)-(III-5ap), (III-5ar)-(III-5a)
w) Compounds of (III-5ay) to (III-5bf).

(III-bix): In the above formula (III-4), R ² is an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and R ³ is 1 to
5 alkyl groups, alkoxy groups, alkenyl groups having 2 to 5 carbon atoms and alkenyloxy groups, wherein m ² + m ³ is 0.
A compound represented by the general formula (III-4a) or (III-
4b), wherein the side chain group R ² is (III-5a) to (I-5
II-5e), (III-5ak) to (III-5ap), wherein the side chain group R ³ is (III-5a) to (III-5e), (III-5g) to (III-5
l), (III-5ak)-(III-5ap), (III-5ar)-(III-
5aw), (III-5ay) to (III-5bf).

The compound contains one or more compounds selected from the compounds represented by the subgroups (III-bi) to (III-bix), and the content of the compound is 10 to 10 as the liquid crystal component C.
A nematic liquid crystal composition having 0% by weight is preferred.

A particularly preferred embodiment of the compounds represented by formulas (III-1) to (III-4) is a liquid crystal component C containing the following compounds.

As the liquid crystal component C, general formulas (III-1) to (I
By containing the compound of II-4), the viscosity and the viscoelasticity can be reduced and the specific resistance and the voltage holding ratio are relatively high. The viscosity of the liquid crystal component C is preferably as low as possible, and in the case of the present invention, 45 cp
Or less, more preferably 30 cp or less, and 20 c
It is more preferably at most p, particularly preferably at most 15 cp.
From such a viewpoint, a preferable compound is (III-ci) whose basic structure is represented by any of the general formulas (III-1a) to (III-1f), (III-1k),
(III-2a)-(III-2f), (III-3a), (III-3h)-
(III-3j), (III-3o), (III-3p), (III-3q),
(III-3ac), (III-3at)-(III-3ax), (III-3b)
a), (III-3bb), (III-3bf), (III-3bg), (III-
3bx) to (III-3cb), compounds represented by (III-3ct) to (III-3cx), more preferably (III-cii): the above (III)
Among -ci), R ² is or a linear alkyl group having 2 to 5 carbon atoms _{C p H 2p + 1 -CH =} CH- (CH 2) q (p = 0,1,
2,3 q = 0,2) an alkenyl group wherein R ³ is a linear alkyl group having 1 to 5 carbon atoms or C _p H _{2p + 1} -CH = C
A compound which is an alkenyl group of H- (CH ₂ ) _q (p = 0, 1, 2, 3 q = 0, 2), more preferably (III-cii
i): Both side chain groups are alkenyl groups, and the basic structures are represented by the general formulas (III-1a), (III-1d), (III-2a), and (III-2)
f), (III-3a), (III-3h), (III-3p), (III-3
It is a compound represented by q).

The liquid crystal component C of the present invention has the general formula (III-
1), general formula (III-2), general formula (III-3), general formula (III
Each of the compounds represented by formula (III) -4) can also be constituted independently, but (III-civ): "General formula (III-1) and / or (III-civ)
Compounds represented by 2), in particular, those represented by general formulas (III-1a) and (III-1
d), Compounds of (III-2a) to (III-2c), (III-2f) "
And (III-cv): “General formula (III-3) and / or general formula (I
II-4), in particular, M ¹ in the general formula (III-3) is a single bond, -C≡C-, -CH = NN = CH-
A compound represented by the general formula (III-3a) or (II
I-3h), (III-3p), (III-3q), (III-3at), (III
-4a), the compound of (III-4h) "can be used to easily optimize the birefringence of the liquid crystal composition according to the intended use. Generally, compounds of general formulas (III-1) and (III-2), for example, compounds of general formulas (III-1a) to (I
By extensively using the compound of II-2f), the birefringence can be reduced, and the color unevenness of the liquid crystal display device can be reduced.
It is possible to easily achieve an improvement in viewing angle characteristics and an increase in contrast ratio. Compounds of the general formula (III-3), for example, compounds of the general formulas (III-3a) to (III-3j), or compounds of the general formula (III-4), for example, the general formulas (III-4a) to (III I
By frequently using the compound of II-4e), the birefringence can be increased, and a thin liquid crystal display element having a liquid crystal layer of 1 to 5 μm can be manufactured.

It contains one or more compounds selected from the compounds represented by the subgroups (III-ci) to (III-cv), and the content of the compound as a liquid crystal component C is 10 to 100.
A nematic liquid crystal composition which is in a percentage by weight is preferred.

The liquid crystal component C of the present invention comprises these subgroups (III-
ai) to (III-cv) may contain one or more compounds selected from one, two or three or more subgroups. The effect can be obtained. Further, compounds capable of simultaneously having two or more structural characteristics of the compounds shown in the subgroups (III-ai) to (III-cv) are more preferable. The liquid crystal component C can be composed of the compounds shown in the above subgroups (III-ai) to (III-cv) according to the desired purpose.

The present invention includes a liquid crystal composition in which a liquid crystal component A and a liquid crystal component C are combined. It has been found that the liquid crystal composition of the present invention has a remarkable effect on the responsiveness, compared to the conventionally known liquid crystal composition composed of the liquid crystal component B and the liquid crystal component C. Liquid crystal component C, especially small groups (III-bi) to (III-bi)
cv) containing liquid crystal component C, more particularly from subgroup (III-ci)
In the liquid crystal composition combined with the liquid crystal component C containing (III-cv), a sharp improvement in responsiveness was obtained as compared with the liquid crystal composition including the liquid crystal component B and the liquid crystal component C. This is because the liquid crystal component A is an unsubstituted or substituted naphthalene-2,6-diyl ring, decahydronaphthalene-2,6-diyl ring,
This is probably because the compound is characterized by a molecular structure having a 2,3,4-tetrahydronaphthalene-2,6-diyl ring as a partial structure, particularly a plate-like structure.

The liquid crystal component C containing these compounds (III-ai) to (III-cv) has a feature that it is well mixed with the essential liquid crystal component A, and the birefringence index can be adjusted according to the purpose. It is useful for improving steepness, its temperature dependence, or its responsiveness. These compounds have at least one of these
This effect can be obtained even with a small content of 0.1 to 30% by weight based on the total amount of the nematic liquid crystal composition of the present invention.

The general formula (III-) relating to the liquid crystal composition of the present invention
1) A liquid crystal component C containing a compound of (III-4) as a main component,
Alternatively, the liquid crystal component C containing the compounds of the subgroups (III-ai) to (III-cv) described above is further added to the subgroup (III-ai)
Liquid crystal component C containing a compound capable of simultaneously having two or more structural characteristics of (III-cv)
The liquid crystal composition of the present invention in combination with
The operating temperature range of the liquid crystal display characteristics can be expanded by improving low-temperature storage, etc., the drive voltage can be reduced and its temperature change can be improved, and relatively quick response to a predetermined drive voltage can be achieved or improved. TN using this as a constituent material
-Improved electro-optical characteristics such as LCD, STN-LCD, and TFT-LCD can be obtained.

In the compounds according to the present invention, constituent atoms can be intentionally substituted with their isotope atoms. In this case, a compound in which a hydrogen atom is replaced with a deuterium atom is particularly preferred, and exhibits more favorable effects in terms of compatibility, elastic constant, pretilt angle, voltage holding ratio and the like. A preferred embodiment is a compound in which a hydrogen atom present in the above-mentioned side chain group, linking group or ring is substituted with a deuterium atom. More preferably, a side chain group is a substituted or unsubstituted alkyl group or alkenyl group, and a ring is a substituted or unsubstituted 1,4-phenylene, pyrimidine-2,5-diyl, trans-1,
4-cyclohexylene, trans-1,4-cyclohexenylene or trans-1,4-dioxane-2,5-
Diyl, -CH ₂ O if the linking group -, - OCH ₂ -, -
_{(CH 2) 2 -, -} (CH 2) 4 -, - CH = CH- (CH 2)
_{2 -, - (CH 2)} 2 -CH = CH -, - CH = N -, - C
H = NN = CH-. Particularly preferably, an alkyl group, an alkenyl group, 1,4-phenylene, trans-
_{1,4-cyclohexylene, - (CH 2) 2 -} , - (CH 2) 4
-.

At present, as the alignment film used for the TN-LCD, STN-LCD or TFT-LCD, a polyimide-based alignment film is frequently used. For example, LX1400, SE150, SE610, AL1051, AL34
08 etc. are used. The liquid crystal display characteristics, display quality, reliability, and productivity are closely related to the specification of the alignment film. For example, the pretilt angle characteristics are important for the liquid crystal material. The magnitude of the pretilt angle needs to be adjusted as needed in order to obtain desired liquid crystal display characteristics and uniform orientation. For example, when the pretilt angle is large, an unstable alignment state is likely to occur, and when the angle is small, sufficient display characteristics are not satisfied.

The present inventors have found that a liquid crystal material having a larger pretilt angle and a liquid crystal material having a smaller pretilt angle are selected, and by applying this, desired liquid crystal display characteristics and uniform orientation can be obtained. We have found what we can achieve from the materials. This technique can be applied to the present invention. For example, when the liquid crystal component B contains the general formulas (II-1) to (II-4), the result is as follows. The larger pretilt angle is a compound in which R ¹ is an alkenyl group, Q ¹ is F, Cl, —CN, Y ¹ , Y ² is F in the general formula (II-1), and / or a compound in the general formula (II-1) R ¹ is an alkyl group, Q ¹ is F, C
l, -CN, M ² is _{-C 2 H 4 -, - C} 4 H 8 - obtained by causing a large amount of content of the compound, a smaller pretilt angle, R ¹ in the general formula (II-1) Is an alkenyl group, C _s H
_{2s + 1 -O-C t H} 2 t, Q 1 is F, Y ¹ is F, Y ² is obtained by causing a large amount of content of the compound, and or M ² is -COO- of the compound of H. Specifically, general formulas (I-1) to
Naphthalene-2,6-diyl ring, decahydronaphthalene-2,6-diyl ring, 1,2,3 in (I-5)
A 4-tetrahydronaphthalene-2,6-diyl ring or a ring A ^{0 to} A ⁴ in the general formulas (0-1) to (0-2) and (I-1) to (I-5) is a cyclohexane ring; The general formula (II-
1), (II-2) and (II-4), rings B ^{1 to} B ³ are cyclohexane rings, and rings C ^{1 to} C ³ in formulas (III-1) to (III-4) are cyclohexane rings; Naphthalene-2,6-
Diyl ring, decahydronaphthalene-2,6-diyl ring, 1,2,3,4-tetrahydronaphthalene-2,
In the case of a compound which is a 6-diyl ring and a hydrogen atom of the ring is substituted with a deuterium atom, the compound varies depending on the substitution position, and enables a wide adjustment of the pretilt angle. In addition, when a compound in which a hydrogen atom is replaced with a deuterium atom is frequently used, there is a special effect of maintaining a higher voltage holding ratio with respect to contamination of impurities, and the display characteristics and manufacturing characteristics of an active TFT-LCD and the like are reduced. It is suitable for the yield. Such effects are due to the nature of heavy water,
That is, it is conceivable that properties such as differences in the equilibrium constant and rate constant of the reaction, low ion mobility, and low solubility of inorganic substances and oxygen are also expressed in the liquid crystal compound. In order to obtain a higher voltage holding ratio, it can be almost obtained by adding the above-mentioned compound in an amount of 10 to 40% by weight or more based on the total amount of the liquid crystal composition.

The content of each liquid crystal component in the nematic liquid crystal composition of the present invention can be generally determined as follows.
The liquid crystal component A is in the range of 0.1 to 99.9% by weight, preferably in the range of 0.5 to 90% by weight, and more preferably in the range of 5 to 85% by weight. The liquid crystal component B contains 0 to 99.
Although it is in the range of 9% by weight, the range of 3 to 80% by weight is preferable, and the range of 5 to 60% by weight is more preferable. The content of the liquid crystal component C is at most 85% by weight, but is preferably in the range of 3 to 70% by weight, and more preferably in the range of 5 to 70% by weight. When compounds represented by the general formulas (0-1) to (0-2) are used, their content is preferably 15% by weight or less as a single substance, and more preferably comprises two or more kinds.
The content of the compounds represented by formulas (0-11a) to (0-22as) with respect to the liquid crystal component A is preferably in the range of 5 to 99.9% by weight. Further, when the compounds represented by the general formulas (0-11) and (0-12) are used, the content relative to the liquid crystal component A is 5%.
~ 20% by weight, 20 ~ 60% by weight, 60 ~
It is preferable to select in the range of 99.9% by weight. When a compound represented by the general formula (I-1) is used, its content is preferably 15% by weight or less as a single substance, and more preferably comprises two or more kinds. ~ (I
The content of the compound represented by -13ab) with respect to the liquid crystal component A is preferably in the range of 5 to 99.9% by weight. Further, when the compounds represented by the general formulas (I-11) and (I-12) are used,
The content with respect to the liquid crystal component A is in the range of 5 to 30% by weight,
30 to 50% by weight, 50 to 70% by weight, 7
It is preferable to select in the range of 0 to 99.9% by weight. When the compound represented by the general formula (I-2) is used, its content is preferably 15% by weight or less as a single substance, and more preferably comprises two or more kinds, and the general formula (I-21a) ~ (I
-23jp) is preferably in the range of 5 to 99.9% by weight based on the liquid crystal component A. Further, when the compound represented by the general formula (I-21) is used, the liquid crystal component A
Is in the range of 5 to 20% by weight, 20 to 60% by weight.
It is preferable to select from a range of 60% to 99.9% by weight. When the compound represented by the general formula (I-3) is used, its content is preferably 15% by weight or less as a single substance, and more preferably comprises two or more kinds, and the general formula (I-31a) The content of the compound represented by the formula (I-33dz) with respect to the liquid crystal component A is preferably in the range of 5 to 99.9% by weight. Further, when the compounds represented by the general formulas (I-31) and (I-32) are used, the content relative to the liquid crystal component A is 5 to 5.
10% by weight, 10-30% by weight, 30-5%
It is preferable to select in the range of 0% by weight and in the range of 50 to 99.9% by weight. When the compound represented by the general formula (I-4) is used, its content is preferably 15% by weight or less as a single substance, and more preferably comprises two or more kinds, and the general formula (I-41a) The content of the compound represented by the formula (I-46 g) with respect to the liquid crystal component A is preferably in the range of 5 to 99.9% by weight. Further, when the compound represented by the general formula (I-41) is used, the content relative to the liquid crystal component A is in the range of 5 to 30% by weight, in the range of 30 to 50% by weight, in the range of 50 to 70% by weight, It is preferable to select in the range of 70 to 99.9% by weight. When the compounds represented by the general formulas (I-42) and (I-43) are used, the content of the liquid crystal component A is 5 to 10%.
It is preferable to select from the range of 10% to 25% by weight, the range of 25% to 50% by weight, and the range of 50% to 99.9% by weight. When a compound represented by the general formula (I-5) is used, its content is preferably 15% by weight or less as a single substance,
The liquid crystal component A of the compounds represented by the general formulas (I-51a) to (I-52bd) is preferably composed of two or more kinds.
Is preferably in the range of 5 to 99.9% by weight. Further, when the compounds represented by the general formulas (I-51) and (I-52) are used, the content relative to the liquid crystal component A is 5 to 30.
It is preferable to select from a range of 30% to 50% by weight, a range of 50% to 70% by weight, and a range of 70% to 99.9% by weight. In this case, the group A included in the liquid crystal component A
Relative mixing ratio of the compound group selected from the general formulas (0-1) to (0-2) which is 1 and the compound group selected from the general formulas (I-1) to (I-5) which is the group A2 Is 99.9: 0.1
From 0.1 to 99.9, but preferably from 95: 5 to 5:95, more preferably from 90:10 to 10:90. Compounds selected from the general formulas (0-1) to (0-2) which are group A1 included in the liquid crystal component A and compounds selected from the general formulas (I-1) to (I-5) which are group A2 The relative mixing ratio of the groups is 99.9: 0.1 to 20: 8
In the case of the range of 0, a composition having a particularly fast response can be obtained, and the mixing ratio is 80:20 to 0.1: 9.
In the case of the range of 9, the saturation voltage can be particularly reduced. The content of the compounds represented by the general formulas (II-1) to (II-4), specifically, the compounds represented by the general formulas (II-1a) to (II-4n),
The content of the liquid crystal component B is preferably 30% by weight or less, more preferably 25% by weight or less, and more preferably 2% or more. The range is preferably from 100 to 100% by weight, more preferably from 75 to 100% by weight. The content of the compounds represented by the general formulas (III-1) to (III-4), specifically, the compounds represented by the general formulas (III-1a) to (III-4ac) is 30 wt. % Or less, more preferably 25% by weight or less, and more preferably 25% by weight or more of two or more kinds.
It is in the range of 0% by weight, preferably in the range of 50 to 100% by weight, and more preferably in the range of 75 to 100% by weight.

High reliability STN-LCD and active STN-L
CD, TFT-LCD, etc. do not contain nitrogen or oxygen atoms
It is preferred to be composed of a compound. From this perspective, the general formula
In (0-1) to (0-2) and (I-1) to (I-5), Q¹But
F, Cl, CF_Three, OCF_Three, OCF_TwoH and X¹, X
^TwoIs H, F, Cl, CF_Three, OCF_ThreeAnd K¹~ K^FiveBut
Single bond, -CH = CH-, -C≡C-,-(CH_Two)_Two−,
− (CH_Two)_Four-, -CH = CH- (CH_Two)_Two-,-(CH_Two)_Two
-CH = CH- as a liquid crystal component A of 50
Preferably, it is contained in an amount of from 100 to 100% by weight. Liquid crystal component B
When used in combination, formulas (II-1) to (II-4)
Then, Q¹Is F, Cl, CF_Three, OCF_Three, OCF_TwoIn H
Yes, Y¹, Y^TwoIs H, F, Cl, CF_Three, OCF_ThreeIn
, P¹~ P ^ThreeIs a single bond, -CH = CH-, -C≡C-,
− (CH_Two)_Two-,-(CH_Two)_Four-, -CH = CH- (CH_Two)_Two
-,-(CH_Two)_Two-CH = CH- is converted to a liquid crystal compound.
It is preferable to contain 50 to 100% by weight as the component B.
No. In particular, selected from the small groups (II-ci) to (II-civ) described above.
It is preferable to contain 50 to 100% by weight of the
New

Formulas (0-1) to (0-2), (I-2) to (I-
When the compound of 4) is used, another preferred compound of the liquid crystal component A is used.
A preferred form contains the compounds shown below. (0): When using compounds of the general formulas (0-1) to (0-2)
If Q¹Is F, Cl, CF_Three, OCF_Three, OCF_TwoH
, X¹Is H, Cl, CF_Three, OCF_Three, OCF_TwoH
Compound. (I): When using compounds of the general formulas (I-2) to (I-4)
If Q¹Is F, Cl, CF_Three, OCF_Three, OCF_TwoH
, X¹Is H, Cl, CF_Three, OCF_Three, OCF_TwoH
, X^TwoIs H, Cl, CF_Three, OCF_Three, OCF_TwoH
Compound. (Ii): When using compounds of the general formulas (I-2) to (I-4)
If Q¹Is F, Cl, CF_Three, OCF_Three, OCF_TwoH
, X¹Is F and X^TwoIs Cl, CF_Three, OCF_Three, OC
F_TwoA compound which is H. (Iii): When using compounds of the general formulas (I-2) and (I-3)
If Q¹Is F, Cl, CF _Three, OCF_Three, OCF_TwoH
, X¹Is F and X^TwoIs H or F, and W¹~ W ^Threeof
One is F, Cl, CF_Three, OCF_Three, OCF_TwoH is
Compound. (Iv): when a compound of the general formula (I-4) is used,¹But
F, Cl, CF_Three, OCF_Three, OCF_TwoH and X¹Is F
And X^TwoIs H or F, and is decahydronaphthale
The -2,6-diyl ring has the formula (I-74b) to (I-74av),
-74ce) to (I-74cj), (I-74cq) to (I-74dm)
Compounds, more preferably (I-74cg), (I-74cq),
Compounds represented by (I-74cr) and (I-74ct). (V): In general formulas (I-2) to (I-4), Q¹Is F, C
1, CF_Three, OCF_Three, OCF_TwoH and X¹Is F
, X^TwoIs a compound of H or F, the above (i) to
Compound of (iv) and / or compound of general formulas (I-1) and (I-5)
Use with a product.

When the compounds of the general formulas (II-1) to (II-4) are used, preferred embodiments of the liquid crystal component B further include the following compounds. (Vi): When compounds of the general formulas (II-1) to (II-4) are used, Q ¹ is F, Cl, CF ₃ , OCF ₃ , OCF ₂ H, and Y ¹ is H, Cl, CF. ₃ , a compound of OCF ₃ and OCF ₂ H, wherein Y ² is H, Cl, CF ₃ , OCF ₃ and OCF ₂ H. (Vii): When compounds of the general formulas (II-1) to (II-4) are used, Q ¹ is F, Cl, CF ₃ , OCF ₃ , OCF ₂ H, Y ¹ is F, and Y ² is Cl, CF ₃ , OCF ₃ , OC
A compound which is F ₂ H. (Viii): When compounds of the general formulas (II-1) to (II-4) are used, Q ¹ is F, Cl, CF ₃ , OCF ₃ , OCF ₂ H, Y ¹ is F, and Y ² is H, and at least one of W ^{1 to} W ⁴ is H, F, Cl, CF ₃ , OCF ₃ , OCF ₂ H
A compound that is (Ix): When the compounds of the general formulas (II-1) to (II-4) are used, Q ¹ is F, Cl, CF ₃ , OCF ₃ , OCF ₂ H, and Y ¹ and Y ² are F And a compound in which at least one of W ^{1 to} W ⁴ is Cl, CF ₃ , OCF ₃ , OCF ₂ H. (X): In the general formulas (II-1) to (II-4), Q ¹ is F,
When a compound of Cl, CF ₃ , OCF ₃ , OCF ₂ H and Y ¹ and Y ² is F is used, the compounds of the above (i) to (ix) and / or the general formulas (I-1) and (I- Use in combination with the compound of 5).

Further, the liquid crystal component A or the liquid crystal component B
Preferred embodiments are shown below. (Xi): In the compounds of the general formulas (I-2) to (I-4),
¹Is F, Cl, CF_Three, OCF_Three, OCF_TwoH
X¹, X^TwoIs a compound of the formula (I-2)
In the compound (I-4), Q¹Is F, Cl, CF_Three, O
CF_Three, OCF_TwoH and X¹Is F, Cl, CF_Three, OC
F_Three, OCF_TwoH and X^TwoIs H, F, Cl, CF_Three, O
CF_Three, OCF_TwoCombination with a compound that is H. (Xii): In the compounds of the general formulas (I-2) to (I-4),
Q¹Is F, Cl, CF_Three, OCF_Three, OCF_TwoH and X
¹, X^TwoIs a compound of the formula (II-1)
In the compound of (II-4), Q¹Is F, Cl, CF_Three, O
CF_Three, OCF_TwoH and Y¹Is H, F, Cl, CF_Three,
OCF_Three, OCF_TwoH and Y^TwoIs H, F, Cl, C
F_Three, OCF_Three, OCF_TwoCombination with compounds that are H
Let's (Xiii): In the compounds of the general formulas (I-2) to (I-4),
Q¹Is F, Cl, CF_Three, OCF_Three, OCF_TwoH and X
¹Is F and X^TwoIs H, Cl, CF_Three, OCF_Three, OCF
_TwoWhen a compound represented by H is used, the compounds represented by the general formulas (I-2) to (I-
In the compound of 4), Q¹Is F, Cl, CF_Three, OC
F_Three, OCF_TwoH and X¹Is F and X^TwoIs F, C
1, CF_Three, OCF_Three, OCF_TwoCombination with a compound that is H
Fit. In this case, the compounds of the general formulas (I-2) to (I-4)
It is preferable to contain 1 type or 2 to 20 types. (Xiv): In the compounds of the general formulas (I-2) to (I-4),
Q¹Is F, Cl, CF_Three, OCF_Three, OCF_TwoH and X
¹Is F and X^TwoIs H, Cl, CF_Three, OCF_Three, OCF
_TwoWhen a compound represented by H is used, the compounds represented by the general formulas (II-1) to (II-
In the compound of 4), Q¹Is F, Cl, CF_Three, OC
F_Three, OCF_TwoH and Y¹Is H, Cl, CF_Three, OCF
_Three, OCF_TwoH and Y^TwoIs H, F, Cl, CF_Three, OC
F_Three, OCF _TwoCombination with a compound that is H. (Xv): In the compounds of the general formulas (I-2) to (I-4),
¹Is F, Cl, CF_Three, OCF_Three, OCF_TwoH and X¹
Is F and X^TwoIs H, Cl, CF_Three, OCF_Three, OCF_Two
When a compound represented by H is used, the compounds represented by the general formulas (II-1) to (II-
In the compound of 4), Q¹Is F, Cl, CF_Three, OC
F_Three, OCF_TwoH and Y¹Is F and Y^TwoIs F, C
1, CF_Three, OCF_Three, OCF_TwoCombination with a compound that is H
Fit. (Xvi): In the compounds of the general formulas (I-2) to (I-4),
Q¹Is F, Cl, CF_Three, OCF_Three, OCF_TwoH and X
¹Is F and X^TwoIs F, Cl, CF_Three, OCF_Three, OCF
_TwoWhen a compound represented by H is used, the compounds represented by the general formulas (II-1) to (II-
In the compound of 4), Q¹Is F, Cl, CF_Three, OC
F_Three, OCF_TwoH and Y¹Is H, Cl, CF_Three, OC
F_Three, OCF_TwoH and Y^TwoIs H, F, Cl, CF_Three, O
CF_Three, OCF_TwoCombination with a compound that is H. this
In this case, the compounds of the general formulas (I-2) to (I-4)
It is preferable to contain 20 kinds. (Xvii): In the compounds of the general formulas (I-2) to (I-4),
Q¹Is F, Cl, CF_Three, OCF_Three, OCF_TwoH and X
¹Is F and X^TwoIs F, Cl, CF_Three, OCF_Three, OCF
_TwoWhen a compound represented by H is used, the compounds represented by the general formulas (II-1) to (II-
In the compound of 4), Q¹Is F, Cl, CF_Three, OC
F_Three, OCF_TwoH and Y¹Is F and Y^TwoIs F, C
1, CF_Three, OCF_Three, OCF_TwoA pair with a compound that is H
Combination. In this case, compounds of general formulas (I-2) to (I-4)
It is preferable to contain 1 type or 2 to 20 types. (Xviii): in compounds of general formulas (0-1) to (0-2)
And Q¹Is F, Cl, CF_Three, OCF_Three, OCF_TwoH
, X¹Is a compound represented by the general formula (II-
In the compounds 1) to (II-4), Q¹Is F, Cl, CF
_Three, OCF_Three, OCF_TwoH and Y¹Is F and Y^TwoBut
F, Cl, CF_Three, OCF_Three, OCF_TwoA compound that is H
Combination with. In this case, the general formulas (0-1) to (0-2)
It is preferable to contain one or two to twenty compounds.

The liquid crystal component A and the liquid crystal component B of the present invention are:
Depending on the desired purpose, a nematic liquid crystal composition characterized by satisfying one, two, or three or more of the above conditions (0) to (xviii) can be obtained. Such a liquid crystal composition of the present invention expands the operating temperature range of liquid crystal display characteristics by improving compatibility, improving low-temperature storage, etc., reducing drive voltage and improving its temperature change, and achieving a predetermined drive voltage. Highly reliable TN-LC that can achieve or improve a relatively fast response to this
D, STN-LCD, active STN-LCD, TFT-LCD, and other improved electro-optical characteristics can be obtained.

In the case of a highly reliable STN-LCD, the liquid crystal component
A (Q¹Is F, Cl, CF_Three, OCF_Three, OCF_TwoCompound of H
Material) and liquid crystal component B (Q¹Is F, Cl, CF_Three, OCF_Three,
OCF _TwoH) is 10 to 100% by weight.
Preferably, 30 to 100% by weight is more preferable, and 60 to 100% by weight.
100% by weight is more preferred. In this case, the liquid crystal component A and
The relative mixing ratio of the liquid crystal component B ranges from 100: 0 to 0.1.
1: Can be selected at any time within the range of 99.9.
It is preferable to select from the range of 0: 0 to 5:95.
It is better to choose from 0: 0 to 10:90
No. In the case of active STN-LCD and TFT-LCD, liquid crystal
Component A (Q¹Is F, Cl, CF_Three, OCF_Three, OCF_TwoH's
Compound) and liquid crystal component B (Q¹Is F, Cl, CF_Three, OCF
_Three, OCF_TwoH) is 20 to 100% by weight.
Preferably 40 to 100% by weight
More preferably, the content is 60 to 100% by weight.
Is more preferred. In this case, the liquid crystal component A and the liquid crystal component B
The relative mixing ratio is from 100: 0 to 0.1: 99.9.
Can be selected at any time within the range of 100: 0 to 5:
It is preferable to select within a range of 95, and 10 is selected according to the purpose.
Range from 0: 0 to 90:10, 90:10 to 70: 3
0 range, 70:30 to 40:60 range, 40: 6
0 to 20:80 range, 20:80 to 5:95 range.
It is more preferable to select the box.

The active STN-LCD is intended to obtain higher contrast at a wide viewing angle and to improve the response time especially at the fall.
Is actively driven using, for example, TFT or MIM technology.

The liquid crystal composition of the present invention has the general formula (0-
1) to (0-2), the compounds represented by (I-1) to (III-4)
In addition, in order to improve the characteristics of the liquid crystal composition,
Normal nematic liquid crystal, smectic
Liquid crystal, cholesteric liquid crystal, etc.
No. For example, a compound having a core structure having four six-membered rings
And the compound has a liquid crystal phase-isotropic liquid phase transition temperature of 1
Contains one or more compounds having a temperature of at least 00 ° C.
I can do it. However, large amounts of these compounds
The use of the compound reduces the properties of the nematic liquid crystal composition
Therefore, the amount of addition depends on the nematic liquid crystal composition obtained.
It is limited according to the required characteristics of the product. Like this
Preferred compounds include those represented by formulas (II-1) and (II-2):
P¹Is 2 in the general formula (II-4)
p^Two+ P^ThreeIs a compound represented by the general formulas (III-1) to (III-
M in 3)¹A compound of the formula (III-4)
M^Two+ M^ThreeIs 2. In addition, this
Ring B which is repeated in the case of¹, B ^Three, Ring C¹, C^Three,Linking
Group P¹, P^Two, M¹May be the same group and are each independently different
It may be.

The crystal phase or the smectic phase-nematic phase transition temperature is preferably 0 ° C. or lower, preferably -10 ° C. or lower, more preferably -20 ° C. or lower, and particularly preferably -3 ° C. or lower.
0 ° C. or less. The nematic phase-isotropic liquid phase transition temperature is 50 ° C. or higher, preferably 60 ° C. or higher, more preferably 70 ° C. or higher, and further preferably 80 ° C. to 180 ° C. The liquid crystal composition of the present invention may have a dielectric anisotropy of 1 or more, but is preferably in the range of 2 to 40. If so, the range of 7 to 30 is preferable. The smaller or medium birefringence is preferably in the range of 0.02 to 0.18, and the larger birefringence is preferably 0.18 to 0.40.
Is preferable. Such properties of the nematic liquid crystal composition are useful for use in an active matrix type, twisted nematic or super twisted nematic liquid crystal display device.

The thickness d between the substrates in the TN-LCD, STN-LCD and TFT-LCD is preferably 1 to 12 μm, more preferably 1 to 10 μm, and further preferably 1.5 to 7 μm. Also,
The product of the thickness d and the birefringence Δn is preferably 0.2 to 5 μm, more preferably 0.3 to 1.6 μm, and more preferably around 0.5 μm, 0.7 to 1.0 μm, and around 1.2 μm. preferable.

When the liquid crystal composition of the present invention aims at a quicker response to the magnitude of the driving voltage, the following can be performed. When a medium drive voltage is intended, the liquid crystal composition of the present invention preferably has a dielectric anisotropy in the range of 3 to 15 and a viscosity at 20 ° C. in the range of 8 to 20 mPa · s. . In this case, the viscosity of only the liquid crystal component C is preferably 25 mPa · s or less, more preferably 15 mPa · s or less, and particularly preferably 10 mPa · s or less. Further, when a particularly low drive voltage is intended, the liquid crystal composition of the present invention preferably has a dielectric anisotropy in the range of 15 to 30,
The range of 18 to 28 is particularly preferred.

The above nematic liquid crystal composition is useful for TN-LCDs, STN-LCDs, and TFT-LCDs having a high response speed. This is useful for a liquid crystal display device capable of performing color display by using a liquid crystal display device, and can be used for a transmission type or reflection type liquid crystal display device. This liquid crystal display element has a substrate having a transparent electrode layer and at least one of which is transparent, in which molecules of the nematic liquid crystal composition are twisted between the substrates. The twist angle is 3 depending on the purpose.
It can be selected in the range of 0 ° to 360 °, 90 ° to
It is preferable to select in the range of 270 °, and 45 ° to 1
It is particularly preferred to select in the range of 35 ° or in the range of 180 ° to 260 °. For this reason, the liquid crystal composition of the present invention can contain a compound having an optically active group having an induced helical pitch p of 0.5 to 1000 μm. Such compounds include cholesteric derivatives, chiral nematics, and ferroelectric liquid crystals. More specifically, R ¹ in general formulas (0-1) to (0-2) and (I-1) to (I-5), and R ¹ in general formulas (II-1) to (II-4) ¹ , a compound in which R ² and R ³ in formulas (III-1) to (III-4) have an optically active group is preferable. As such side chain groups, more preferred forms of the formulas (I-6), (III-51) and (III-52) are, for example, those represented by the following general formulas (IV-1a) to (IV-1bt) It is a compound represented.

[0237]

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[0238]

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The compounds represented by the general formulas (0-1) to (0-2) and (I-1)
K in (I-5)¹~ K^Five, The general formulas (II-1) to (II-
P in 4)¹~ P^ThreeAnd the general formulas (III-1) to (III-4)
M in ¹~ M^ThreeHowever, compounds having an optically active group are preferred.
No. A more preferred form of such a linking group is, for example,
Compounds represented by the following general formulas (IV-2a) to (IV-2j)
Things.

[0240]

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As typical examples, cholesteryl nonanate, C-15, CB-15, S-811 and the like are preferably used. More specifically, for example, compounds represented by the following general formulas (IV-3a) to (IV-3ab).

[0242]

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[0243]

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A more specific usage will be described. It is known that the induced helical pitch becomes longer and shorter as the temperature rises, but one of these may be used alone or in combination of two or more. good. The mixing amount is 0.001% by weight to 1%.
0% by weight is preferred, and 0.05% to 3% by weight.
Is more preferable, and 0.1 to 3% by weight is further preferable. However, these quantities are equal to the torsion angle θ described above.
It is a matter of course that a predetermined induced helical pitch is set depending on the thickness d between the substrate and the substrate. For example, TN-LCD, STN-LC
D, In the TFT-LCD, the quotient d / p of the thickness d between the substrates and the induced helical pitch p can be selected from the range of 0.001 to 24, but is preferably in the range of 0.01 to 12; .
The range of 1-2 is more preferred, the range of 0.1-1.5 is still more preferred, the range of 0.1-1 is even more preferred,
A range of 0.1 to 0.8 is particularly preferred.

The pretilt angle obtained by the alignment film provided on the transparent electrode substrate is preferably selected in the range of 1 ° to 20 °. When the twist angle is 30 ° to 100 °, the pretilt angle is 1 ° to 4 °. Is preferably 100 ° to 18 °.
At 0 °, a pretilt angle of 2 ° to 6 ° is preferable.
A pretilt angle of 3 ° to 12 ° is preferable for ° to 260 °, and a pretilt angle of 6 ° to 20 ° is preferable for 260 ° to 360 °.

The present invention further provides the following compounds and nematic liquid crystal compositions as other liquid crystal materials. That is, the general formulas (0-1) to (0-2), (I-1) to (I-
R ¹ in 5) and R in general formulas (II-1) to (II-4)
¹ , R ² and R ³ in the general formulas (III-1) to (III-4) are
A compound which is a photocurable α-substituted acryloyl group and a liquid crystal composition containing the compound. By including such a compound, the interface of the transparent solid substance can be made preferable. The compound having a photocurable α-substituted acryloyl group can be selected from the range of 0.01 to 100%.

The liquid crystal composition of the present invention is prepared by adding a dichroic dye such as anthraquinone, azo, azoxy, azomethine, merocyanine, quinophthalene, and tetrazine to the guest host (GH) liquid crystal composition. Can also be used. Further, by adding the above-mentioned compound having an optically active group, it can be used as a liquid crystal composition of a phase transition type display (PC) and a white tailor type display. Furthermore, a liquid crystal composition of birefringence control type display (ECB), dynamic scattering type display (DS), OCB mode described in SID93 Digest, p.277 (1993) and R-OCB mode as an application thereof. Can also be used. Further, as another usage, the liquid crystal composition of the present invention can be added for the purpose of adjusting the phase sequence of the ferroelectric liquid crystal. It can also be used as a polymer stabilized liquid crystal composition for liquid crystal display. In this case, the compound or composition having the photocurable side chain group can be used. Further, as another utilization method, the compound having a photocurable side chain group or the composition of the present invention is used as a UV-curable liquid crystal, and is used for an optical member such as a retardation film, an optical lens, and various optical filters. be able to. Further, it can be used by applying to liquid crystal display-related members such as a micro color filter, a polarizing plate and an alignment film.

The liquid crystal composition of the present invention can be obtained by containing the liquid crystal components A, B and C described in detail above. As described above, nematic liquid crystal compositions (1-01) to (1-23) are shown below as preferred examples, but the present invention is not limited to these examples. These examples are:
For example, nematic liquid crystal compositions (1-01), (1-03) to (1-07)
, (1-20), (1-21), (1-22) and (1-23) are nematic liquid crystal compositions (1-01), (1-02), (1- 08), (1
-10) to (1-15), (1-17), (1-18), (1-22), (1-23) are S
For TN-LCD, nematic liquid crystal composition (1-06), (1-0
(9), (1-16), (1-20) to (1-22) are for TFT-LCD, (1-
08)-(1-10), (1-15), (1-18), (1-19) and (1-23) are birefringence control type display (ECB) and dynamic scattering type display (DS) (1-09), (1-16), (1-18), and (1-22) can be used for the OCB mode and the R-OCB mode as an application thereof. Further, the compounds shown in these examples (1-010
One or more compounds of 1) to (1-2311) are converted to compounds of the general formulas (0-1) to (0-2), (I-1) to
The compound represented by (III-4), more specifically, the compound represented by the general formula (0
-11a) to (0-22as), (I-11a) to (I-52an), wherein the side chain groups are (I-6a) to (I-6bc),
Wherein the partial structure of the polar group is a compound of the general formulas (I-71a) to (I-73bt), the basic structure of the general formulas (II-1a) to (II-4n), and the side chain group is (I-6a ) To (I-6bc), wherein the partial structure of the polar group is a compound of the general formulas (II-5a) to (II-5r) or a basic structure of the general formulas (III-1a) to (III-4ac) Then, the side chain group can be used in place of the compounds of (III-5a) to (III-5bf).

Preferred Composition Example: Nematic Liquid Crystal Composition (1-01)

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Preferred Composition Example: Nematic Liquid Crystal Composition (1-02)

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Preferred Composition Example: Nematic Liquid Crystal Composition (1-03)

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Preferred Composition Example: Nematic Liquid Crystal Composition (1-04)

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Preferred Composition Example: Nematic Liquid Crystal Composition (1-05)

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Preferred Composition Example: Nematic Liquid Crystal Composition (1-06)

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Preferred Composition Example: Nematic Liquid Crystal Composition (1-07)

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Preferred Composition Example: Nematic Liquid Crystal Composition (1-08)

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Preferred Composition Example: Nematic Liquid Crystal Composition (1-09)

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Preferred Composition Example: Nematic Liquid Crystal Composition (1-10)

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Preferred Composition Example: Nematic Liquid Crystal Composition (1-11)

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Preferred Composition Example: Nematic Liquid Crystal Composition (1-12)

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Preferred Composition Example: Nematic Liquid Crystal Composition (1-13)

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Preferred Composition Example: Nematic Liquid Crystal Composition (1-14)

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Preferred Composition Example: Nematic Liquid Crystal Composition (1-15)

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Preferred Composition Example: Nematic Liquid Crystal Composition (1-16)

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Preferred Composition Example: Nematic Liquid Crystal Composition (1-17)

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Preferred Composition Example: Nematic Liquid Crystal Composition (1-18)

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Preferred Composition Example: Nematic Liquid Crystal Composition (1-19)

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Preferred Composition Example: Nematic Liquid Crystal Composition (1-20)

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Preferred Composition Example: Nematic Liquid Crystal Composition (1-21)

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Preferred Composition Example: Nematic Liquid Crystal Composition (1-22)

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Preferred Composition Example: Nematic Liquid Crystal Composition (1-23)

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At present, the liquid crystal display device is in a state of intense price competition. From this standpoint, it has been an issue how to optimize the display characteristics for various uses in a liquid crystal material, and two bottles composed of two types of liquid crystal materials and four types of liquid crystal materials composed of four types of liquid crystal materials have become issues. There is a demand for a systemized liquid crystal material such as a bottle. Typical characteristics include a threshold voltage, a birefringence, and a nematic phase-isotropic liquid phase transition temperature. For example, if a two-bottle system composed of a liquid crystal material having a higher threshold voltage and a lower liquid crystal material having the same other characteristics is used, two types of liquid crystal can be used without being restricted by the driving electronic components used. Timely compounding of materials allows for faster and cheaper handling. The present invention is useful to meet this point of view, nematic liquid crystal compositions (1-01) ~ (1-23) and the composition obtained by partially replacing may be used by mixing timely. it can. These methods of use can of course be performed including the nematic liquid crystal compositions (3-01) to (3-09) of the examples described later.

[0273]

EXAMPLES The present invention will be described in more detail with reference to the following examples, but the present invention is not limited to these examples. Further, "%" in the compositions of the following examples mean "% by weight", - (CH _{2) 2} - and -C ₂ H ₄ - or -
(CH ₂ ) ₄ — and —C ₄ H ₈ — are the same.

In the examples, physical properties of the liquid crystal composition and TN-L
The display characteristics of the liquid crystal display device constituting the CD are as follows. T _NI : Nematic phase-isotropic liquid phase transition temperature (° C.) T _{→ N} : Solid phase or smectic phase-nematic phase transition temperature (° C.) Δε: dielectric anisotropy at 20 ° C. Δn: at 20 ° C. Birefringence η: Viscosity at 20 ° C. (mPa · s) Vth: Threshold voltage at 20 ° C. when a TN-LCD is constructed (V) V ₁ : No voltage at 20 ° C. when a TN-LCD is constructed Assuming that the light transmittance at the time of application is 100%, the applied voltage (V) when the light transmittance is 1% γ: steepness at 20 ° C., saturation voltage (Vsat) and Vth
Τr = τd: At 20 ° C., the rise time when a predetermined voltage is applied from 0 V is τr, and the fall time when no voltage is applied after the predetermined voltage is τd, Time when

A liquid crystal display device exhibiting STN-LCD display characteristics was manufactured as follows. A mixed liquid crystal is prepared by adding a chiral substance “S-811” (manufactured by Merck) to the liquid crystal composition. "Sunever 610" on the opposing flat transparent electrode
An alignment film is formed by rubbing an organic film (manufactured by Nissan Chemical Industries, Ltd.) to produce an STN-LCD display cell having a twist angle of 240 degrees.
The mixed liquid crystal is injected into this cell to constitute a liquid crystal display. The chiral substance is composed of a helical pitch P of the mixed liquid crystal by adding the chiral substance and a cell thickness d of the display cell.
Was added so that Δn · d = 0.85 and d / P = 0.50. As the display characteristics, the threshold voltage, the steepness, the temperature dependency of the driving voltage, and the response speed were measured. STN-LCD display characteristics with a twist angle of 240 degrees Vth: threshold voltage (V) at 20 ° C. γ: steepness at 20 ° C., saturation voltage (Vsat) and Vth
Δ (Vth) / △ (T): Temperature dependence of drive voltage τr = τd: Response time in 1/240 duty drive

The chemical stability of the composition was as follows: liquid crystal composition 2 g
Was placed in an ampoule tube, vacuum-degassed, and then subjected to a process of purging with nitrogen and sealed, and a heating promotion test at 150 ° C. for 1 hour was performed.
The specific resistance of the liquid crystal composition before the test, the specific resistance after the heating acceleration test, the voltage holding ratio before the test, and the voltage holding ratio after the heating acceleration test were measured.

In addition, one or more of the compounds shown in the examples may be converted to compounds of the general formulas (0-1) to (0-2) and (I-1) to (I-1) The compound can be used in place of the compound represented by III-4). When such an example is shown, a specific compound is represented in the form of the following example. Liquid crystal component A Examples of general formula (0-1) Compound (2-1a): Basic structure of side chain group (I-6b)
(I-11a) Polar group (I-72e) Example of general formula (0-2) Compound (2-2a): Basic structure of side chain group (I-6b)
(I-21ae) Polar group (I-72e) Example of general formula (I-1) Compound (2-1b): Side chain group (I-6a) basic structure
(I-11a) Polar group (I-71a) Example of general formula (I-2) Compound (2-2b): Side chain group (I-6a) basic structure
(I-21a) Polar group (I-72a) Example of general formula (I-3) Compound (2-3b): Basic structure of side chain group (I-6a)
(I-31a) Polar group (I-72a) Examples of general formula (I-4) Compound (2-4b): Basic structure of side chain group (I-6a)
(I-41a) Polar group (I-72a) Example of general formula (I-5) Compound (2-5b): Basic structure of side chain group (I-6a)
(I-51a) Polar group (I-73a) Liquid crystal component B Examples of general formula (II-1) Compound (2-1c): Side chain group (I-6a) Basic structure (II-1a) Polar group (II -5a) Example of general formula (II-2) Compound (2-2c): side-chain group (I-6a) basic structure (II-2a) polar group (II-5a) Example of general formula (II-3) Compound (2-3c): Side chain group (I-6a) Basic structure (II-3a) Polar group (II-5a) Example of general formula (II-4) Compound (2-4c): Side chain group (I -6a) Basic structure (II-4a) Polar group (II-5a) Liquid crystal component C Examples of general formula (III-1) Compound (2-1d): Side chain group (III-5b) Basic structure (III-1a) ) Side chain group (III-5b) Examples of the general formula (III-2) Compound (2-2d): Side chain group (III-5b) Basic structure (III-2a) Side chain group (III-5b) General formula Example of (III-3) Compound (2-3d): Side chain group (III-5b) Basic structure (III-3a) Side chain group (III-5b) Example of general formula (III-4) Compound (2- 4d): Side group (III-5b) Basic structure (III-4a) Side group (III-5b)

[0278]

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(Example 1)

Embedded image A nematic liquid crystal composition (3-01) was prepared, and various characteristics of the composition were measured. The results were as follows. Physical Properties of Liquid Crystal Composition T _NI : 79.9 ° C. T _{→ N} : −70. ° C Δε: 9.8 Δn: 0.119 Reliability characteristics of liquid crystal composition Specific resistance before test: 2.2 × 10 ¹³ Ω · cm Specific resistance after heating acceleration test: 7.8 × 10 ¹² Ω -Cm Voltage holding ratio before test: 99.6% Voltage holding ratio after heating acceleration test: 98.8% TN-LCD display characteristics at 90 ° twist angle (cell thickness 6 µm) Vth: 1.74 Vγ: 1. 194 τr = τd: 32.7 msec

The nematic liquid crystal composition has a high T _NI and a low T _{→ N} , so that it can be operated in a wider temperature range and has a low driving voltage as compared with the magnitude of the dielectric anisotropy Δ △. Therefore, it has a feature that it can be used even in a high-definition display corresponding to a high duty number. In addition, since the nematic liquid crystal composition has a high specific resistance and a high voltage holding ratio after the heating acceleration test, it can be understood that the composition is thermally stable. An active matrix liquid crystal display device using this composition as a basic constituent material is:

Comparative Example 1 11-2587 Ratio In order to show the superiority of the present invention, the group A1 (3-01) of the liquid crystal component A contained in the nematic liquid crystal composition (3-01) was used.
05) with another compound (b-0105)
When 01) was prepared, the results were as follows.

[0282]

Embedded image The mixed liquid crystal (b-01) is composed of the above. Physical Properties of Liquid Crystal Composition T _NI : 86.8 ° C. T _{→ N} : −70. ° C Δε: 6.5 Δn: 0.118 Reliability characteristics of liquid crystal composition Specific resistance before test: 9.4 × 10 ¹² Ω · cm Specific resistance after heating acceleration test: 6.8 × 10 ¹² Ω Cm Voltage holding ratio before test: 98.8% Voltage holding ratio after heating acceleration test: 96.5% TN-LCD display characteristics with a twist angle of 90 degrees (cell thickness 6 μm) Vth: 1.78 Vγ: 1. 203 τr = τd: 45.7 msec

The nematic liquid crystal composition (3-01) of the present invention
T _NI is slightly higher than that of the comparative liquid crystal composition (b-01), and T _{→ N}
Were about the same, and it was clear that the response speed was reduced by about 30%. The nematic liquid crystal composition of the present invention showed an effect more improved than the comparative liquid crystal.

(Comparative Example 2) 11-2587 ratio 2 In order to show the superiority of the present invention, a mixed liquid crystal (b) in which the liquid crystal component A contained in the nematic liquid crystal composition (3-01) was replaced with another compound was used. -02) was prepared. Specifically, a compound having a 1,4-phenylene group as a naphthalene-2,6-diyl ring and a tetrahydronaphthalene-2,6-diyl ring, and a decahydronaphthalene-2,6-diyl group as a 1,4 -A compound substituted with a cyclohexylene group. The results were as follows.

[0285]

Embedded image The mixed liquid crystal (b-02) is composed of the above. Physical properties of liquid crystal composition T _NI : 20 ° C. or less Δε: Unmeasurable Δn: Unmeasurable η: Unmeasurable TN-LCD display characteristics with a twist angle of 90 degrees (cell thickness 6 μm) Vth: Unmeasurable γ: Unmeasurable τr = τd: Measurement is not possible

The mixed liquid crystal (b-02) was nematic at 20 ° C. or lower.
Phase cannot be used in normal temperature range
The nematic liquid crystal composition (3-01) of the present invention has a T_NIBut
High, T _{→ N}Are almost the same and have excellent compatibility
It can be operated in a temperature range that is
Rukoto has been shown. Characteristics of mixed liquid crystals (b-01) and (b-02)
As is clear from the results, the groups A1 and A2
The nematic liquid crystal composition of the present invention (3-0
1) Improve fast response and wide nematic phase at the same time
It is a thing.

(Example 2)

Embedded image Was prepared, and various properties of the composition were measured. The results were as follows. Physical properties of liquid crystal composition T _NI : 84.6 ° C. T _{→ N} : -70. ° C Δε: 7.2 Δn: 0.113 Reliability characteristics of liquid crystal composition Specific resistance before test: 1.4 × 10 ¹³ Ω · cm Specific resistance after heating acceleration test: 6.3 × 10 ¹² Ω Cm Voltage holding ratio before test: 99.2% Voltage holding ratio after heating acceleration test: 98.6% TN-LCD display characteristics at 90 ° twist angle (cell thickness 6 μm) Vth: 1.54 Vγ: 1. 210

Although this nematic liquid crystal composition is composed of seven kinds of components, it has a high T _{N- I} and a low T _{→ N} , so that it can be operated in a wider temperature range and has a different dielectric constant. Since it has a lower driving voltage than the magnitude of the anisotropy △ ε, it has a feature that it can be used even for a high-definition display corresponding to a high duty number. In addition, since the nematic liquid crystal composition has a high specific resistance and a high voltage holding ratio after the heating acceleration test, it can be understood that the composition is thermally stable. An active matrix liquid crystal display device using this composition as a basic constituent material is excellent in that the leakage current is small and flicker does not occur.

(Example 3)

Embedded image Was prepared, and various properties of the composition were measured. The results were as follows. T _NI : 89.3 ° C. T _{→ N} : −70. ° C Δε: 4.6 Δn: 0.096 TN-LCD display characteristics with a twist angle of 90 degrees (cell thickness 6 μm) Vth: 1.86 Vγ: 1.24

(Example 4)

Embedded image Was prepared, and various characteristics of the composition were measured. The results were as follows. T _NI : 88.0 ° C T _{→ N} : -70. ° C: 5.1: Δn: 0.092 TN-LCD display characteristics at a twist angle of 90 degrees (cell thickness: 6 μm) Vth: 1.69 Vγ: 1.26

(Example 5)

Embedded image Was prepared, and various characteristics of the composition were measured. The results were as follows. T _NI : 84.7 ° C T _{→ N} : -70. ° C Δε: 8.0 Δn: 0.112 TN-LCD display characteristics with a twist angle of 90 degrees (cell thickness 6 μm) Vth: 1.55 Vγ: 1.26

(Example 6)

Embedded image Was prepared, and various properties of the composition were measured. The results were as follows. T _NI : 84.9 ° C. T _{→ N} : −70. ° C. Δε: 4.8 Δn: 0.091 TN-LCD display characteristics with a twist angle of 90 ° (cell thickness 6 μm) Vth: 1.76 V γ: 1.26

(Example 7)

Embedded image Was prepared, and various characteristics of the composition were measured. The results were as follows. T _NI : 92.7 ° C. T _{→ N} : −70. ° C Δε: 12.0 Δn: 0.128 TN-LCD display characteristics with a twist angle of 90 degrees (cell thickness 6 μm) Vth: 1.33 Vγ: 1.20

A chiral substance “S-811” (manufactured by Merck) was added to the nematic liquid crystal composition to prepare a mixed liquid crystal. On the other hand, "San Ever
An alignment film was formed by rubbing an organic film of "610" (manufactured by Nissan Chemical Industries, Ltd.) to produce an STN-LCD display cell having a twist angle of 240 degrees. The mixed liquid crystal was injected into this cell to construct a liquid crystal display, and the display characteristics were measured. As a result, a liquid crystal display device having a small temperature dependence of the driving voltage of 2.5 mV / ° C. and exhibiting STN-LCD display characteristics excellent in high time division characteristics was obtained. The chiral substance is composed of a specific helical pitch P of the mixed liquid crystal due to the addition of the chiral substance and a cell thickness d of the display cell.
Was added so that Δn · d = 0.85 and d / P = 0.50. Hereinafter, the STN-LCD was manufactured in the same manner. STN-LCD display characteristics with a twist angle of 240 degrees Vth: 1.38 Vγ: 1.035 Δ (Vth) / Δ (T): 2.5 mV / ° C (T = 0 to 40 ° C)
Τr = τd: 164. msec (1 / 240duty drive)

(Embodiment 8)

Embedded image Was prepared, and various properties of the composition were measured. The results were as follows. T _NI : 88.9 ° C. T _{→ N} : −70. ° C: ε: 7.7 Δn: 0.100 TN-LCD display characteristics with a twist angle of 90 degrees (cell thickness 6 μm) Vth: 1.44 V γ: 1.26 STN-LCD display characteristics with a twist angle of 240 degrees Vth : 1.59 Vγ: 1.032 Δ (Vth) / Δ (T): 2.1 mV / ° C (T = 0 to 40 ° C)
Τr = τd: 144. msec (1 / 240duty drive)

(Embodiment 9)

Embedded image Was prepared, and various properties of the composition were measured. The results were as follows. T _NI : 81.2 ° C T _{→ N} : -70. ° C. Δε: 7.4 Δn: 0.096 TN-LCD display characteristics at a twist angle of 90 degrees (cell thickness 6 μm) Vth: 1.29 V V ₁ : 2.58 V γ: 1.28 τr = τd: 52.9 msec

The nematic liquid crystal composition (3-09) of the present invention comprises
Applying voltages V ₁ when the light transmittance of 1% as low as 2.58V, which is an optimal composition for the active matrix liquid crystal display device of low driving voltage.

(Example 10)

Embedded image In the nematic liquid crystal composition (3-09) of this example, except that the compound (2-09-01) shown above was used instead of the compound (3-0905), the nematic liquid crystal composition (3-09) In the same manner as in the above, a nematic liquid crystal composition (3-09-01) was prepared. Further, in the nematic liquid crystal composition (3-09) of this example,
In place of compound (3-0905), each of the following compounds (2-09-
02)-except for using (2-09-12), nematic liquid crystal composition
Similarly to (3-09), each nematic liquid crystal composition (3-0
9-02) to (3-09-12) were prepared. With respect to the display characteristics of these nematic liquid crystal compositions (3-09-01) to (3-09-12), good results were obtained as in the present example. In particular, nematic liquid crystal compositions (3-09-04) to (3-09-06), (3-09-11) to (3-09-12)
Low Vth becomes, V ₁ becomes less than 2.5V even.

[0299]

The nematic liquid crystal composition of the present invention comprises the group A1 represented by the general formulas (0-1) to (0-2) and the group A2
When a liquid crystal component A composed of a compound of the general formula appropriately selected from the compounds represented by the general formulas (I-1) to (I-5) is used as an essential component and mixed with the liquid crystal composition, the compatibility becomes The operating temperature range of the liquid crystal display characteristics is expanded by improving the temperature and the storage at low temperatures, and the driving voltage can be reduced by reducing the saturation voltage. Responsiveness can be achieved. In addition, the design of the birefringence, dielectric anisotropy and elastic constant and their temperature dependence, the optical wavelength dependence of the birefringence and the frequency dependence of the dielectric anisotropy corresponding to the duty number can be improved. It has the feature of. Therefore, the nematic liquid crystal composition of the present invention has an active matrix type, a twisted
It can be used for nematic or super twisted nematic liquid crystal display devices. Further, it is possible to provide a liquid crystal display element which performs color display by the birefringence of the liquid crystal layer and the retardation plate.

Continued on the front page F term (reference) 4H027 BA01 BA02 BB01 BB02 BB03 BB04 BB05 BB06 BB11 BC02 BC04 BC05 BC06 BD01 BD02 BD04 BD08 BD23 BD24 BE01 BE02 BE05 CB01 CC04 CD01 CD04 CG04 CK04 CM01 CM04 CP04 CQ01 CQ03 CT05CT04 CU04 CU05 CW01 CW02 DE01 DE04 DK03 DK04 DK05 DM03 DM04

Claims (10)

[Claims] 1. The liquid crystal composition according to any one of the groups A1 and A2.
A liquid crystal component A comprising a selected compound;
The following formulas (0-1) to (0-2), (I-1) to (I
-5), which is represented by the following formula:(Wherein one or two present in a naphthalene-2,6-diyl ring)
More than one CH group may be substituted with N and are present in the decahydronaphthalene-2,6-diyl ring
One or two or more -CH_Two-Group is -CF_TwoReplaced with-
May be one or more of two or more
-CH_Two-CH_Two-Group is -CH_Two-O-, -CH = CH
-, -CH = CF-, -CF = CF-, -CH = N- or
May be substituted by -CF = N-, and is present in the ring.
One or two or more> CH-CH_Two-Group is> CH-
O-,> C = CH-,> C = CF-,> C = N- or>
N-CH_TwoAnd may be substituted in the ring.
> CH-CH <group is> CH-CF <,> CF-CF <
Or> C = C <, unsubstituted or substituted
At least one C in the substituted ring is substituted with Si.
May be R¹Are each independently an alkyl group having 1 to 10 carbon atoms or
Represents an alkenyl group having 2 to 10 carbon atoms;
Alkenyl group or unsubstituted or substituted
Or two or more F, Cl, CN, CH_ThreeOr CF_ThreeHave
Can be present in the alkyl group or the alkenyl group.
One or more CHs_TwoThe groups are such that the O atoms are
Substitute with O, CO or COO as not directly bonded
Q¹Are each independently F, Cl, C
F_Three, OCF_Three, OCF_TwoH, OCFH_Two, NCS or CN
And X¹~ X^ThreeAre each independently H, F, Cl, C
F_Three, OCF_ThreeOr CN^ThreeAlso each independently
CH_ThreeAnd W¹~ W⁶Are each independently H, F, Cl,
CF_Three, OCF_ThreeOr CN, W^FourAre also independent
To CH_ThreeAnd K¹~ K^FiveAre each independently a single bond, -C
OO-, -OCO-, -CH_TwoO-, -OCH_Two-, -C
H = CH-, -CF = CF-, -C≡C-,-(CH_Two)_Two
-,-(CH_Two)_Four-, -CH = CH- (CH_Two)_Two-,-(C
H_Two)_Two-CH = CH-, -CH = N-, -CH = NN
= CH- or -N (O) = N-;⁰Are each independently trans-1,4-cyclohexyl
Len, 1,4-phenylene, 2 or 3-fluoro-1,
4-phenylene, 2,3-difluoro-1,4-phenyl
Len, 3,5-difluoro-1,4-phenylene
And ring A¹~ A^FourAre each independently 1,4-phenylene, 2 or
3-fluoro-1,4-phenylene, 2,3-difluoro
B-1,4-phenylene, 3,5-difluoro-1,4
-Phenylene, 2 or 3-chloro-1,4-phenylene
2,3-dichloro-1,4-phenylene, 3,5-
Dichloro-1,4-phenylene, pyrimidine-2,5-
Diyl, trans-1,4-cyclohexylene, tolan
1,4-cyclohexenylene, trans-1,3-
Dioxane-2,5-diyl, trans-1-sila-
1,4-cyclohexylene, trans-4-sila-1,
4-cyclohexylene, naphthalene-2,6-diyl,
1,2,3,4-tetrahydronaphthalene-2,6-
Diyl or decahydronaphthalene-2,6-diyl
Represents naphthalene-2,6-diyl and 1,2,3,4
-Tetrahydronaphthalene-2,6-diyl is unsubstituted
Or one or two F, Cl, CF as substituents _Three, O
CF_ThreeOr CH_ThreeAnd naphthalene-2,
6-diyl ring, 1,2,3,4-tetrahydronaphtha
Len-2,6-diyl ring, decahydronaphthalene-
2,6-diyl ring, side-chain group R¹, Polar group Q¹, Linking group K¹
~ K^FiveAnd ring A⁰~ A^FourOne or more waters present in
An elemental atom may be replaced by a deuterium atom, and k¹~ K⁸
Each independently represents 0 or 1, and k^Three+ K^FourIs 0 or 1
Yes, k^Five+ K⁶+ K⁷+ K⁸Is 0, 1 or 2, and is a compound of the general formulas (0-1) to (0-2) and (I-1) to (I-5).
The atoms that make up a product are
good. ) Compounds of the above general formulas (0-1) to (0-2) and (I-1) to (I-5)
As a liquid crystal component excluding substances, has dielectric anisotropy of +2 or more
Containing 0-99.9% by weight of a liquid crystal component B comprising
From a compound having a dielectric anisotropy of -10 to +2
0 to 85% by weight of the liquid crystal component C,
And the sum of the liquid crystal components C is 0 to 99.9% by weight.
A nematic liquid crystal composition characterized by the following. 2. The liquid crystal component A has the following conditions:
2. The nem according to claim 1, wherein at least one of them is satisfied.
Tic liquid crystal composition. (1) A compound in which the liquid crystal component A is represented by the general formula (0-1)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-1)
Is a compound containing two or more kinds and represented by the general formula (I-2)
One or more compounds selected from the group consisting of
The content of the compound in the liquid crystal component A is 5 to 100% by weight.
%. (2) The compound in which the liquid crystal component A is represented by the general formula (0-1)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-1)
Is a compound containing two or more kinds and represented by the general formula (I-3)
One or more compounds selected from the group consisting of
The content of the compound in the liquid crystal component A is 5 to 100% by weight.
%. (3) The compound wherein the liquid crystal component A is represented by the general formula (0-1)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-1)
Is a compound containing two or more kinds and represented by the general formula (I-4)
One or more compounds selected from the group consisting of
The content of the compound in the liquid crystal component A is 5 to 100% by weight.
%. (4) The compound in which the liquid crystal component A is represented by the general formula (0-1)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-1)
Is a compound containing two or more kinds and represented by the general formula (I-5)
One or more compounds selected from the group consisting of
The content of the compound in the liquid crystal component A is 5 to 100% by weight.
%. (5) The compound in which the liquid crystal component A is represented by the general formula (0-1)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-2)
Is a compound containing two or more kinds and represented by the general formula (I-3)
One or more compounds selected from the group consisting of
The content of the compound in the liquid crystal component A is 5 to 100% by weight.
%. (6) The compound wherein the liquid crystal component A is represented by the general formula (0-1)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-2)
Is a compound containing two or more kinds and represented by the general formula (I-4)
One or more compounds selected from the group consisting of
The content of the compound in the liquid crystal component A is 5 to 100% by weight.
%. (7) The liquid crystal component A is a compound represented by the general formula (0-1)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-2)
Is a compound containing two or more kinds and represented by the general formula (I-5)
One or more compounds selected from the group consisting of
The content of the compound in the liquid crystal component A is 5 to 100% by weight.
%. (8) The compound wherein the liquid crystal component A is represented by the general formula (0-1)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-3)
Is a compound containing two or more kinds and represented by the general formula (I-4)
One or more compounds selected from the group consisting of
The content of the compound in the liquid crystal component A is 5 to 100% by weight.
%. (9) The compound in which the liquid crystal component A is represented by the general formula (0-1)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-3)
Is a compound containing two or more kinds and represented by the general formula (I-5)
One or more compounds selected from the group consisting of
The content of the compound in the liquid crystal component A is 5 to 100% by weight.
%. (10) The liquid crystal component A is a compound represented by the general formula (0-1)
Containing one or more compounds selected from
One compound selected from the compounds represented by formula (I-4)
Or a compound containing two or more kinds and represented by the general formula (I-5)
One or more compounds selected from the group consisting of
Content of the obtained compound in the liquid crystal component A is 5 to 100
%. (11) The liquid crystal component A is a compound represented by the general formula (0-1)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or a compound containing two or more kinds and represented by the general formula (I-2)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-3)
Contains two or more, and the liquid crystal component A of the selected compound
Content of 5 to 100% by weight. (12) The liquid crystal component A is a compound represented by the general formula (0-1)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or a compound containing two or more kinds and represented by the general formula (I-2)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-4)
Contains two or more, and the liquid crystal component A of the selected compound
Content of 5 to 100% by weight. (13) The liquid crystal component A is a compound represented by the general formula (0-1)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or a compound containing two or more kinds and represented by the general formula (I-2)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-5)
Contains two or more, and the liquid crystal component A of the selected compound
Content of 5 to 100% by weight. (14) The liquid crystal component A is a compound represented by the general formula (0-1)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or a compound containing two or more kinds and represented by the general formula (I-3)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-4)
Contains two or more, and the liquid crystal component A of the selected compound
Content of 5 to 100% by weight. (15) The liquid crystal component A is a compound represented by the general formula (0-1)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or a compound containing two or more kinds and represented by the general formula (I-3)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-5)
Contains two or more, and the liquid crystal component A of the selected compound
Content of 5 to 100% by weight. (16) The liquid crystal component A is a compound represented by the general formula (0-1)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or a compound containing two or more kinds and represented by the general formula (I-4)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-5)
Contains two or more, and the liquid crystal component A of the selected compound
Content of 5 to 100% by weight. (17) The liquid crystal component A is a compound represented by the general formula (0-1)
Containing one or more compounds selected from
One compound selected from the compounds represented by formula (I-2)
Or a compound containing two or more kinds and represented by the general formula (I-3)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-4)
Contains two or more, and the liquid crystal component A of the selected compound
Content of 5 to 100% by weight. (18) The liquid crystal component A is a compound represented by the general formula (0-1)
Containing one or more compounds selected from
One compound selected from the compounds represented by formula (I-2)
Or a compound containing two or more kinds and represented by the general formula (I-3)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-5)
Contains two or more, and the liquid crystal component A of the selected compound
Content of 5 to 100% by weight. (19) The liquid crystal component A is a compound represented by the general formula (0-1):
Containing one or more compounds selected from
One compound selected from the compounds represented by formula (I-2)
Or a compound containing two or more kinds and represented by the general formula (I-4)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-5)
Contains two or more, and the liquid crystal component A of the selected compound
Content of 5 to 100% by weight. (20) The liquid crystal component A is a compound represented by the general formula (0-1)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-3)
Or a compound containing two or more kinds and represented by the general formula (I-4)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-5)
Contains two or more, and the liquid crystal component A of the selected compound
Content of 5 to 100% by weight. (21) The liquid crystal component A is a compound represented by the general formula (0-1)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or a compound containing two or more kinds and represented by the general formula (I-2)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-3)
Is a compound containing two or more kinds and represented by the general formula (I-4)
One or more compounds selected from the group consisting of
The content of the compound in the liquid crystal component A is 5 to 100% by weight.
%. (22) The liquid crystal component A is a compound represented by the general formula (0-1)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or a compound containing two or more kinds and represented by the general formula (I-2)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-3)
Is a compound containing two or more kinds and represented by the general formula (I-5)
One or more compounds selected from the group consisting of
The content of the compound in the liquid crystal component A is 5 to 100% by weight.
%. (23) The liquid crystal component A is a compound represented by the general formula (0-1)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or a compound containing two or more kinds and represented by the general formula (I-2)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-4)
Is a compound containing two or more kinds and represented by the general formula (I-5)
One or more compounds selected from the group consisting of
The content of the compound in the liquid crystal component A is 5 to 100% by weight.
%. (24) The liquid crystal component A is a compound represented by the general formula (0-1)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or a compound containing two or more kinds and represented by the general formula (I-3)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-4)
Is a compound containing two or more kinds and represented by the general formula (I-5)
One or more compounds selected from the group consisting of
The content of the compound in the liquid crystal component A is 5 to 100% by weight.
%. (25) The liquid crystal component A is a compound represented by the general formula (0-1):
Containing one or more compounds selected from
One compound selected from the compounds represented by formula (I-2)
Or a compound containing two or more kinds and represented by the general formula (I-3)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-4)
Is a compound containing two or more kinds and represented by the general formula (I-5)
One or more compounds selected from the group consisting of
The content of the compound in the liquid crystal component A is 5 to 100% by weight.
%. (26) The liquid crystal component A is a compound represented by the general formula (0-1)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or a compound containing two or more kinds and represented by the general formula (I-2)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-3)
Is a compound containing two or more kinds and represented by the general formula (I-4)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-5)
Contains two or more, and the liquid crystal component A of the selected compound
Content by weight is 100% by weight. (27) The liquid crystal component A is a compound represented by the general formula (0-1)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or the liquid crystal component of the selected compound containing two or more kinds
The content in A is 5 to 100% by weight. (28) The liquid crystal component A is a compound represented by the general formula (0-1)
Containing one or more compounds selected from
One compound selected from the compounds represented by formula (I-2)
Or the liquid crystal component of the selected compound containing two or more kinds
The content in A is 5 to 100% by weight. (29) The liquid crystal component A is a compound represented by the general formula (0-1)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-3)
Or the liquid crystal component of the selected compound containing two or more kinds
The content in A is 5 to 100% by weight. (30) The liquid crystal component A is a compound represented by the general formula (0-1):
Containing one or more compounds selected from
One compound selected from the compounds represented by formula (I-4)
Or the liquid crystal component of the selected compound containing two or more kinds
The content in A is 5 to 100% by weight. (31) The liquid crystal component A is a compound represented by the general formula (0-1)
Containing one or more compounds selected from
One compound selected from the compounds represented by formula (I-5)
Or the liquid crystal component of the selected compound containing two or more kinds
The content in A is 5 to 100% by weight. (32) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or a compound containing two or more kinds and represented by the general formula (I-2)
One or more compounds selected from the group consisting of
Content of the obtained compound in the liquid crystal component A is 5 to 100
%. (33) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or a compound containing two or more kinds and represented by the general formula (I-3)
One or more compounds selected from the group consisting of
Content of the obtained compound in the liquid crystal component A is 5 to 100
%. (34) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or a compound containing two or more kinds and represented by the general formula (I-4)
One or more compounds selected from the group consisting of
Content of the obtained compound in the liquid crystal component A is 5 to 100
%. (35) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or a compound containing two or more kinds and represented by the general formula (I-5)
One or more compounds selected from the group consisting of
Content of the obtained compound in the liquid crystal component A is 5 to 100
%. (36) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by formula (I-2)
Or a compound containing two or more kinds and represented by the general formula (I-3)
One or more compounds selected from the group consisting of
Content of the obtained compound in the liquid crystal component A is 5 to 100
%. (37) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by formula (I-2)
Or a compound containing two or more kinds and represented by the general formula (I-4)
One or more compounds selected from the group consisting of
Content of the obtained compound in the liquid crystal component A is 5 to 100
%. (38) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by formula (I-2)
Or a compound containing two or more kinds and represented by the general formula (I-5)
One or more compounds selected from the group consisting of
Content of the obtained compound in the liquid crystal component A is 5 to 100
%. (39) The liquid crystal component A has a general formula
One or more compounds selected from the compounds represented by (0-2)
Is a compound containing two or more kinds and represented by the general formula (I-3)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-4)
Contains two or more, and the liquid crystal component A of the selected compound
Content of 5 to 100% by weight. (40) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-3)
Or a compound containing two or more kinds and represented by the general formula (I-5)
One or more compounds selected from the group consisting of
Content of the obtained compound in the liquid crystal component A is 5 to 100
%. (41) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by formula (I-4)
Or a compound containing two or more kinds and represented by the general formula (I-5)
One or more compounds selected from the group consisting of
Content of the obtained compound in the liquid crystal component A is 5 to 100
%. (42) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or a compound containing two or more kinds and represented by the general formula (I-2)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-3)
Contains two or more, and the liquid crystal component A of the selected compound
Content of 5 to 100% by weight. (43) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or a compound containing two or more kinds and represented by the general formula (I-2)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-4)
Contains two or more, and the liquid crystal component A of the selected compound
Content of 5 to 100% by weight. (44) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or a compound containing two or more kinds and represented by the general formula (I-2)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-5)
Contains two or more, and the liquid crystal component A of the selected compound
Content of 5 to 100% by weight. (45) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or a compound containing two or more kinds and represented by the general formula (I-3)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-4)
Contains two or more, and the liquid crystal component A of the selected compound
Content of 5 to 100% by weight. (46) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or a compound containing two or more kinds and represented by the general formula (I-3)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-5)
Contains two or more, and the liquid crystal component A of the selected compound
Content of 5 to 100% by weight. (47) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or a compound containing two or more kinds and represented by the general formula (I-4)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-5)
Contains two or more, and the liquid crystal component A of the selected compound
Content of 5 to 100% by weight. (48) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by formula (I-2)
Or a compound containing two or more kinds and represented by the general formula (I-3)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-4)
Contains two or more, and the liquid crystal component A of the selected compound
Content of 5 to 100% by weight. (49) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by formula (I-2)
Or a compound containing two or more kinds and represented by the general formula (I-3)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-5)
Contains two or more, and the liquid crystal component A of the selected compound
Content of 5 to 100% by weight. (50) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by formula (I-2)
Or a compound containing two or more kinds and represented by the general formula (I-4)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-5)
Contains two or more, and the liquid crystal component A of the selected compound
Content of 5 to 100% by weight. (51) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-3)
Or a compound containing two or more kinds and represented by the general formula (I-4)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-5)
Contains two or more, and the liquid crystal component A of the selected compound
Content of 5 to 100% by weight. (52) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or a compound containing two or more kinds and represented by the general formula (I-2)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-3)
Is a compound containing two or more kinds and represented by the general formula (I-4)
One or more compounds selected from the group consisting of
The content of the compound in the liquid crystal component A is 5 to 100% by weight.
%. (53) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or a compound containing two or more kinds and represented by the general formula (I-2)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-3)
Is a compound containing two or more kinds and represented by the general formula (I-5)
One or more compounds selected from the group consisting of
The content of the compound in the liquid crystal component A is 5 to 100% by weight.
%. (54) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or a compound containing two or more kinds and represented by the general formula (I-2)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-4)
Is a compound containing two or more kinds and represented by the general formula (I-5)
One or more compounds selected from the group consisting of
The content of the compound in the liquid crystal component A is 5 to 100% by weight.
%. (55) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or a compound containing two or more kinds and represented by the general formula (I-3)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-4)
Is a compound containing two or more kinds and represented by the general formula (I-5)
One or more compounds selected from the group consisting of
The content of the compound in the liquid crystal component A is 5 to 100% by weight.
%. (56) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by formula (I-2)
Or a compound containing two or more kinds and represented by the general formula (I-3)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-4)
Is a compound containing two or more kinds and represented by the general formula (I-5)
One or more compounds selected from the group consisting of
The content of the compound in the liquid crystal component A is 5 to 100% by weight.
%. (57) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or a compound containing two or more kinds and represented by the general formula (I-2)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-3)
Is a compound containing two or more kinds and represented by the general formula (I-4)
Containing one or more compounds selected from
One or more compounds selected from the compounds represented by (I-5)
Contains two or more, and the liquid crystal component A of the selected compound
Content by weight is 100% by weight. (58) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-1)
Or the liquid crystal component of the selected compound containing two or more kinds
The content in A is 5 to 100% by weight. (59) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by formula (I-2)
Or the liquid crystal component of the selected compound containing two or more kinds
The content in A is 5 to 100% by weight. (60) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by the formula (I-3)
Or the liquid crystal component of the selected compound containing two or more kinds
The content in A is 5 to 100% by weight. (61) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by formula (I-4)
Or the liquid crystal component of the selected compound containing two or more kinds
The content in A is 5 to 100% by weight. (62) The liquid crystal component A is a compound represented by the general formula (0-2)
Containing one or more compounds selected from
One compound selected from the compounds represented by formula (I-5)
Or the liquid crystal component of the selected compound containing two or more kinds
The content in A is 5 to 100% by weight. 3. The liquid crystal composition according to claim 1, wherein the liquid crystal component A has the following subgroup (0-ai):
(I-aviii) containing 1 to 20 compounds selected from one, two or three or more subgroups, and the content of the compound is 10 to 100% by weight. The nematic liquid crystal composition according to claim 1. The general formula (0-
In (1) to (0-2), (0-ai) R ¹ has 2 to 2 carbon atoms.
7, a compound which is an alkyl group or an alkenyl group, (0-ai
i) Q ¹ is F, Cl, CF ₃ , OCF ₃ , OCF ₂ H or C
A compound represented by N, (0-aiii) K ^{1 to} K ² are a single bond, and-(C
H ₂ ) ₂ —, —COO— or a compound of the formula —C （C—, (0
-aiv) ring A ⁰ is trans-1,4-cyclohexylene,
A compound which is 1,4-phenylene, 3-fluoro-1,4-phenylene or 3,5-difluoro-1,4-phenylene, wherein (0-avi) W ^{1 to} W ² are H, F, Cl, CF ₃ Or a compound which is OCF ₃ , wherein (0-avii) X ¹ is H, F, Cl,
A compound which is CF ₃ or OCF ₃ . The general formula (I-1) or above
(I-5) a compound wherein (I-ai) R ¹ is an alkyl group or alkenyl group having 2 to 7 carbon atoms, (I-aii) Q ¹
Is F, Cl, CF ₃ , OCF ₃ , OCF ₂ H or CN, (I-aiii) K ^{1 to} K ⁵ are a single bond, — (CH ₂ )
_2- , -COO- or -C≡C-, (I-ai
v) compounds wherein rings A ¹ -A ⁴ are trans-1,4-cyclohexylene, 1,4-phenylene, 3-fluoro-1,4-phenylene or 3,5-difluoro-1,4-phenylene, (I-av) a naphthalene-2,6-diyl ring,
1,2,3,4-tetrahydronaphthalene-2,6-
Diyl ring, decahydronaphthalene-2,6-diyl ring, side group R ¹ , polar group Q ¹ , linking groups K ^{1 to} K ⁵ and ring A ¹
1 or a compound in which two or more hydrogen atoms are replaced with deuterium atoms present to A ^4. The general formulas (I-1) to (I-3),
In (I-5), (I-avi) W ^{1 to} W ³ are H, F, Cl,
A compound which is CF ₃ or OCF ₃ . Formula (I-2) or above
In (I-4), (I-avii) X ¹ and X ² are H, F, Cl, C
A compound which is F ₃ or OCF ₃ . (I-aviii) The compound wherein X ³ is a CH ₃ group. 4. The liquid crystal component A has the following small group (0-bi):
(I-bxi) from one or two or three or more subgroups
Contains 1 to 20 selected compounds, and contains
2. The method according to claim 1, wherein the rate is 5 to 100% by weight.
4. The nematic liquid crystal composition according to any one of items 1 to 3. In general formula (0-1)
And R¹Is an alkyl group having 2 to 7 carbon atoms or alk
A nyl group,¹Is F, Cl, CF_Three, OCF_ThreeOr C
N and (0-bi) k¹= 0 and K¹Is a single bond,-
(CH_Two)_Two-, -COO- or -C≡C-,
(0-bii) k¹= 1 and K¹, K^TwoIs a single bond,-(C
H_Two)_Two-, -COO- or -C≡C-. one
In general formula (0-2), R¹Is alkyl having 2 to 7 carbon atoms
Or an alkenyl group;¹Is F, Cl, CF_Three,
OCF_ThreeOr CN and X¹Is H, F, Cl, CF_ThreeOr
OCF_ThreeAnd W¹~ W^ThreeIs H, F, Cl, CF_ThreeOr O
CF_ThreeAnd (0-biii) k¹= 0 and K^TwoIs simple
If-(CH_Two)_Two-, -COO- or -C≡C-
Compound, (0-biv) k¹= 1 and the ring A⁰Is a transformer
1,4-cyclohexylene, 1,4-phenylene, 3-
Fluoro-1,4-phenylene, 3,5-difluoro-
1,4-phenylene, K¹, K^TwoIs a single bond,-(C
H_Two)_Two-, -COO- or -C≡C-. one
In the general formula (I-1), R¹Is alkyl having 2 to 7 carbon atoms
Or an alkenyl group;¹Is F, Cl, CF_Three,
OCF_ThreeOr CN, and (I-bi) k¹= K^Two= 0
Ring A¹Is trans-1,4-cyclohexylene,
1,4-phenylene, 3-fluoro-1,4-phenylene
, 3,5-difluoro-1,4-phenylene, naphtha
Len-2,6-diyl, 1,2,3,4-tetrahide
Lonaphthalene-2,6-diyl or decahydronaphtha
Len-2,6-diyl, K¹Is a single bond,-(CH_Two)
_Two-, -COO- or -C≡C-, (I-bi
i) k¹= 1, k^Two= 0, ring A¹, A^TwoIs a transformer
1,4-cyclohexylene, 1,4-phenylene, 3-
Fluoro-1,4-phenylene, 3,5-difluoro-
1,4-phenylene, naphthalene-2,6-diyl,
1,2,3,4-tetrahydronaphthalene-2,6-
Diyl or decahydronaphthalene-2,6-diyl
Yes, K¹, K^TwoIs a single bond,-(CH_Two)_Two-, -COO- or
Is a compound wherein -C≡C-. In the general formula (I-2),
R¹Is an alkyl or alkenyl group having 2 to 7 carbon atoms
And Q¹Is F, Cl, CF_Three, OCF_ThreeOr CN
, X¹, X^TwoIs H, F, Cl, CF_ThreeOr OCF_ThreeIn
, W¹~ W^ThreeIs H, F, Cl, CF_ThreeOr OCF_ThreeIn
(I-biii) k^Three= K^Four= 0, ring A¹Is a transformer
-1,4-cyclohexylene, 1,4-phenylene, 3
-Fluoro-1,4-phenylene or 3,5-difluoro
B-1,4-phenylene;¹, K^FourIs a single bond,-
(CH_Two)_Two-, -COO- or -C≡C-.
In the general formula (I-3), R¹Is an alkyl having 2 to 7 carbon atoms
A kill group or an alkenyl group,¹Is F, Cl, C
F_Three, OCF_ThreeOr CN and X¹, X^TwoIs H, F, C
1, CF_ThreeOr OCF_ThreeAnd W¹~ W^ThreeIs H, F, C
1, CF_ThreeOr OCF_ThreeAnd (I-biv) k¹= K^Two= 0
And K^ThreeIs a single bond, -COO- or -C≡C-
Compound (I-bv) k¹= 1, k^Two= 0, ring A¹But
1,4-phenylene, 3-fluoro-1,4-phenylene
Or 3,5-difluoro-1,4-phenylene
, K ¹, K^ThreeIs a single bond, -COO- or -C≡C-
Compound. In the general formula (I-4), R¹Has 2 carbon atoms
To 7 alkyl groups or alkenyl groups,¹Is F,
Cl, CF_Three, OCF_ThreeOr CN and X¹, X^TwoIs H,
F, Cl, CF_ThreeOr OCF_ThreeAnd (I-bvi) k^Five= K
⁶= K⁷= K⁸= 0 and K^FiveIs a single bond,-(CH_Two)_Two−,
− (CH_Two)_Four-, -COO- or -C≡C-
Thing, (I-bvii) k^Five= 1, k⁶= K⁷= K⁸= 0 and the ring
A¹Is trans-1,4-cyclohexylene, 1,4-
Phenylene, 3-fluoro-1,4-phenylene or
3,5-difluoro-1,4-phenylene,
K¹, K^FiveIs a single bond,-(CH_Two)_Two-, -COO- or -C
A compound of ≡C—, (I-bviii) k⁷= 1, k^Five= K⁶=
k⁸= 0 and the ring A^ThreeTo trans-1,4-cyclo
Xylene, 1,4-phenylene, 3-fluoro-1,4
-Phenylene or 3,5-difluoro-1,4-phenylene
Len and K^Three, K^FiveIs a single bond,-(CH_Two)_Two-, -CO
A compound wherein O- or -C≡C-, (I-bix) decahai
When the dronaphthalene-2,6-diyl ring is -CF_Two−, −
CH_Two-O-, -CH = CH-, -CH = CF-, -C
F = CF-, -CH = N-, -CF = N-,> CH-O
-,> C = CH-,> C = CF-,> C = N-,> N-
CH_Two−,> CH-CF <,> CF-CF <,> C = C
<Having at least one substituent among the substituents of Si
Compound. In the general formula (I-5), R¹Is the number of carbon atoms
2-7 alkyl or alkenyl groups,¹But
F, Cl, CF_Three, OCF_ThreeOr CN and W¹, W^TwoBut
H, F, Cl, CF_ThreeOr OCF_ThreeAnd (I-bx) k¹=
k^Two= 0, ring A¹Is trans-1,4-cyclohexyl
Silene, 1,4-phenylene, 3-fluoro-1,4-
Phenylene, 3,5-difluoro-1,4-phenylene
, Naphthalene-2,6-diyl, 1,2,3,4-te
Trahydronaphthalene-2,6-diyl or decahigh
Dronaphthalene-2,6-diyl, K¹Is simple
If-(CH_Two)_Two-,-(CH_Two)_Four-Or -COO-
Compound, (I-bxi) k¹= 1, k^Two= 0, ring A¹, A
^TwoIs trans-1,4-cyclohexylene, 1,4-phenyl
Phenylene, 3-fluoro-1,4-phenylene, 3,5
-Difluoro-1,4-phenylene, naphthalene-2,
6-diyl, 1,2,3,4-tetrahydronaphthale
-2,6-diyl or decahydronaphthalene-2,
6-diyl, K¹, K^TwoIs a single bond,-(CH_Two)_Two−,
− (CH_Two)_Four-Or -COO-. 5. The liquid crystal component B represented by the following general formula (II-1):
(II-4)(Where R¹, Q¹, W¹~ W^FourIs the same as in claim 1.
, Y¹, Y^TwoAre each independently H, F, Cl or OCF_Three
V represents CH or N;¹~ P^ThreeAre each independently a single bond, -COO-, -OCO
-, -CH_TwoO-, -OCH_Two-,-(CH_Two)_Two-,-(C
H_Two)_Four-, -CH = CH- (CH_Two)_Two-,-(CH _Two)_Two-C
H = CH-, -CH = N-, -CH = NN-N = CH- or
Represents -N (O) = N-, and P¹, P^ThreeAlso each independently
-CH = CH-, -CF = CF- or -C≡C-
Or ring B¹~ B^ThreeAre independently transformer-1,4
-Cyclohexylene, trans-1,4-cyclohexene
Nylene, trans-1,3-dioxane-2,5-dii
, Trans-1-sila-1,4-cyclohexylene or
Represents trans-4-sila-1,4-cyclohexylene
And ring B^ThreeIs also 1,4-phenylene, 2 or 3-fur
Oro-1,4-phenylene, 3,5-difluoro-1,
4-phenylene, 2 or 3-chloro-1,4-phenylene
2,3-dichloro-1,4-phenylene, 3,5-
Dichloro-1,4-phenylene may be a side chain group.
R¹, Polar group Q¹, Linking group P¹~ P^ThreeAnd ring B¹~ B^ThreeExists in
One or more hydrogen atoms are replaced by deuterium atoms
May be¹~ P^ThreeRepresents 0 or 1 each independently
Then p^Two+ P^ThreeIs 0 or 1, and the atoms constituting the compounds of the general formulas (II-1) to (II-4) are
May be substituted with an isotope atom of )
Contains one or more compounds selected from the compound group
5. The nematic liquid crystal set according to claim 1, wherein:
Adult. 6. The liquid crystal component C represented by the general formula (III-1):
(III-4)(Where W¹~ W^Three, V are the same as in claims 1 and 5.
R^Two, R^ThreeIs each independently an alkyl having 1 to 10 carbon atoms
Group, alkoxy group or alkenyl having 2 to 10 carbon atoms
A alkenyloxy group, the alkyl group,
A oxy group, the alkenyl group or the alkenyloxy group
One or more F, Cl, unsubstituted or substituted
CN, CH_ThreeOr CF_ThreeAnd or or
An alkyl group, the alkoxy group, the alkenyl group, or the
One or more CHs present in the alkenyloxy group
_TwoThe group is such that the O atoms are not directly bonded to each other:
May be substituted with O, CO or COO;¹~ Z^Three
Are each independently H, F, Cl, CF_Three, OCF_ThreeOr CN
And Z^ThreeIs also each independently -CH_ThreeMay be
M¹~ M^ThreeAre each independently a single bond, -COO-, -OCO
-, -CH_TwoO-, -OCH_Two-,-(CH_Two)_Two-,-(C
H_Two)_Four-, -CH = CH- (CH_Two)_Two-,-(CH _Two)_Two-C
H = CH-, -CH = N-, -CH = NN-N = CH- or
Represents -N (O) = N-, and M¹, M^ThreeAlso each independently
-CH = CH-, -CF = CF- or -C≡C-
Or ring C¹~ C^ThreeAre independently transformer-1,4
-Cyclohexylene, trans-1,4-cyclohexene
Nylene, trans-1,3-dioxane-2,5-dii
, Trans-1-sila-1,4-cyclohexylene,
Trans-4-sila-1,4-cyclohexylene, naph
Taren-2,6-diyl, 1,2,3,4-tetrahi
Dronaphthalene-2,6-diyl or decahydronaph
Represents taren-2,6-diyl, and naphthalene-2,6-
Diyl and 1,2,3,4-tetrahydronaphthalene
-2,6-diyl is unsubstituted or one or two
F, Cl, CF_Three, OCF_ThreeOr CH_ThreeHaving
And ring C¹, C^ThreeIs also 1,4-phenylene, 2 or
3-fluoro-1,4-phenylene, 2,3-difluoro
B-1,4-phenylene, 3,5-difluoro-1,4
-Phenylene, 2 or 3-chloro-1,4-phenylene
2,3-dichloro-1,4-phenylene, 3,5-
Dichloro-1,4-phenylene may be a side chain group.
R^Two, R^Three, Linking group M¹~ M^ThreeAnd ring C¹~ C^Three1 that exists in
One or more hydrogen atoms are replaced by deuterium atoms
May be¹~ M^ThreeEach independently represents 0 or 1, and m
^Two+ M^ThreeIs 0 or 1, and an atom constituting the compounds of the general formulas (III-1) to (III-4)
The offspring may be substituted by its isotope atom. )
Characterized by containing a compound selected from the group of compounds
The nematic liquid crystal composition according to claim 1, wherein 7. The liquid crystal composition according to claim 1, wherein the compound has a core structure having four six-membered rings, and the compound having a liquid crystal phase-isotropic liquid phase transition temperature of 100 ° C. or higher. The nematic liquid crystal composition according to any one of claims 1 to 6, wherein the composition comprises one or more kinds. 8. The liquid crystal composition having a dielectric anisotropy of 2 to 40, a birefringence of 0.02 to 0.40,
A nematic phase-isotropic liquid phase transition temperature of 0 ° C to 180 ° C, and a crystalline phase, smectic phase or glass phase-nematic phase transition temperature of -200 ° C to 0 ° C. 7. The nematic liquid crystal composition according to 7. 9. The nematic liquid crystal composition according to claim 1, wherein the liquid crystal composition contains a compound having an optically active group having an induced helical pitch of 0.5 to 1000 μm. 10. An active matrix, twisted nematic or super twisted nematic liquid crystal display device using the nematic liquid crystal composition according to claim 9.