JP2002327175A - Liquid crystal composition and liquid crystal display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid crystal composition having a moderate threshold voltage, high reliability and high anisotropic value Δn of refractive index and a liquid crystal display device obtained by using the composition. SOLUTION: This liquid crystal composition is provided by including the first component composed of a compound represented by general formula (1) and the second component composed of at least one kind selected from the group composed of compounds represented by general formulae (2-1) and (2-2) (wherein, R<1> denotes a 1-10C alkyl; R<2> and R<3> denote each a 1-10C alkyl, a 1-10C alkoxy, a 2-10C alkoxymethyl or a 2-10C alkenyl, independently; Z1 and Z2 denote each -C2 H4 - or single bond, independently; X1 and X2 denote each F, Cl, CF3 , OCF3 , OCF2 H, a 1-10C alkyl, a 1-10C alkoxy, a 2-10C alkoxymethyl or a 2-10C alkenyl, independently; and Y1 , Y2 , Y3 , Y4 , Y5 , Y6 , Y7 , Y8 , Y9 and Y10 denote each H or F, independently). The liquid crystal display device is formed by using the composition.

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, and more particularly, to a liquid crystal composition suitably used for a liquid crystal display device using an active matrix LCD display system and a liquid crystal composition using the same. The present invention relates to a liquid crystal display device.

[0002]

2. Description of the Related Art A liquid crystal display (LCD) has a lower power consumption, a smaller size, and a lighter weight than a CRT (CRT display). Various LCDs such as an STN type and a thin film transistor (TFT) type have been put to practical use. Among them, an active matrix LCD (AM-LCD) such as a thin film transistor (TFT) system has been widely used as a flat panel display with progress in color and definition.
In recent years, OCB (Optically Compensated Birefringence) has been proposed as a promising next-generation high-speed display mode.
LCDs are in the limelight.

[0003] The general characteristics required of a liquid crystal composition for AM-LCD include (1) a voltage holding ratio (VHR) of a cell into which the liquid crystal composition is injected in order to maintain a high contrast of the LCD. ) Is high, (2) the temperature range showing the nematic liquid crystal phase is wide, (3) an appropriate refractive index anisotropy (Δn) can be obtained depending on the cell thickness, and (4) depending on the driving circuit. Therefore, an appropriate threshold voltage can be obtained. A liquid crystal material used for an AM-LCD having a small cell thickness, particularly preferably a cell thickness of preferably 3 μm or less, is required to have a large value of Δn in the above item (3).

In the AM-LCD operation method, a TN display method in which the orientation of liquid crystal molecules between upper and lower electrode substrates is twisted by about 90 ° has been widely adopted. In this TN display system, in order to prevent coloring of the liquid crystal cell due to interference without applying a voltage and to obtain an optimum contrast, the product of the refractive index anisotropy (Δn) and the cell thickness (d) μm is used. (Δn · d) is set to a certain value (for example, Δn · d = 〜0.
5 μm). Under such restrictions, the Δn of the liquid crystal composition for TFTs currently in practical use is about 0.07 to 0.15 under fast minimum conditions, and especially 0.08 to 0.13. I have. E. FIG. Jak
eman et al. (Phys. Lett., A, 39
(1972) 69), the response time (hereinafter sometimes abbreviated as τ) is proportional to the viscosity of the liquid crystal material (hereinafter sometimes abbreviated as η), and the cell thickness d is It is proportional to the square. If a liquid crystal composition having a large Δn is used, the value of the cell thickness d can be reduced, so that τ is significantly reduced. As described above, it is very useful that the liquid crystal composition used for the liquid crystal display element has an appropriately large Δn.

In addition, notebook personal computers and the like that are small and lightweight and portable have been developed, and the use of LCDs has been expanding. LCDs for portable applications are limited in characteristics by the driving power supply. In order to use the device for a long time, it is necessary to reduce power consumption. Therefore, a drive voltage is required to be low, that is, a liquid crystal composition having a small threshold voltage is required. The required threshold voltage value of the liquid crystal material is
The voltage is about 2.0 V for a 5 V driving device that is put into practical use and about 1.6 V for a 4 V driving device. Recently, further lowering of the voltage has been required, and a liquid crystal composition having a threshold voltage of 1.5 V or less has been sought. Furthermore, with the miniaturization of LCDs, the development of devices intended for outdoor use is also being studied. In order to withstand outdoor use, it is required to exhibit a nematic phase over a region beyond the temperature range of the use environment. From this point of view, a liquid crystal composition for a TFT that is currently in practical use is a nematic liquid crystal composition.
Isotropic phase transition temperature (clearing point: T _NI ) of 60
° C or higher, smectic-nematic phase transition temperature (T
_(SN ) is −20 ° C. or less.

[0006] With such a background, Japanese Patent Application Laid-Open No. 5-50 / 1990.
No. 0679 discloses a novel compound and a liquid crystal composition using the compound. However, some of these compositions have a large value of Δn, but at the same time, have too high a threshold voltage, which is not suitable for a practically used driving voltage, particularly a low voltage driving. As described above, although the liquid crystal composition has been intensively studied for various purposes, it is presently demanding a new improvement.

[0007]

DISCLOSURE OF THE INVENTION The present inventors have intensively studied compositions using various liquid crystal compounds in order to solve these conventional problems. As a result, the present inventors have found a composition which can be suitably used especially for an active matrix type liquid crystal display device (AM-LCD display device) requiring a high Δn, and completed the present invention. As is apparent from the above description, the object of the present invention is to satisfy the general characteristics required for an AM-LCD display element, have an appropriate threshold voltage, and particularly have a high voltage holding ratio in a high temperature region. An object of the present invention is to provide a liquid crystal composition and a liquid crystal display device having a large refractive index anisotropy Δn.

[0008]

The present invention is shown by the following.
Is done. (1) A first component comprising a compound represented by the general formula (1)
And the general formulas (2-1) to (2-2).
Contains a second component consisting of at least one compound
A liquid crystal composition comprising:(Where R¹Represents an alkyl group having 1 to 10 carbon atoms;
^Two, R^ThreeIs independently an alkyl group having 1 to 10 carbon atoms,
Alkoxy group, alkoxymethyl group or 2-C
10 alkenyl groups, Z₁, Z_TwoAre independently
-C_TwoH_Four-Or a single bond, X₁And X₂Each
Independently F, Cl, CF_Three, OCF_Three, OCF_TwoH, carbon
An alkyl group having 1 to 10 carbon atoms, an alkoxy group, and 2 to 1 carbon atoms
0 represents an alkoxymethyl group or an alkenyl group,
Y₁, Y_Two, Y_Three, Y_Four, Y_Five, Y₆, Y ₇, Y₈, Y₉and
Y_TenEach independently represents H or F. ).

(2) The liquid crystal composition according to the above item 1, further comprising at least one compound represented by the general formula (3) as a third component. (Wherein, R ⁴ and R ⁵ each independently represent an alkyl group having 1 to 10 carbon atoms, an alkoxy group, an alkoxymethyl group or an alkenyl group having 2 to 10 carbon atoms, and A ₁ represents
There represents a substituted which may be 1,4-phenylene group F, _{A 2} represents a trans-1,4-cyclohexylene group or 1,4-phenylene group. ).

(3) The liquid crystal composition contains the first component in an amount of 3 to 50% by weight, the second component in an amount of 3 to 90% by weight and the third component in an amount of 3 to 40% by weight based on the total weight of the liquid crystal composition. 3. The liquid crystal composition according to the above item 2, wherein

(4) The second component has the general formula (2-1-a)
4. The liquid crystal composition according to the above item 3, comprising at least one compound selected from the group consisting of and (2-2-a). (Wherein, R ² and R ³ each independently represent an alkyl group having 1 to 10 carbon atoms, an alkoxy group or an alkenyl group having 2 to 10 carbon atoms, and X ₁ and X ₂ each independently represent F,
Cl, CF ₃ , OCF ₃ , an alkyl group having 1 to 10 carbon atoms,
An alkoxy group or an alkenyl group having 2 to 10 carbon atoms, a _{Y 3, Y 4, Y 5} , Y 6, Y 9 and Y _{1 0} each independently H or F. ).

(5) A liquid crystal display device comprising the composition according to any one of the above items (1) to (4).

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail.
Preferred compounds as the first component constituting the liquid crystal composition of the present invention include compounds represented by any of the following general formulas (1-1) to (1-4). In these formulas, R ¹ represents an alkyl group having 1 to 10 carbon atoms.

Next, the compounds of the general formulas (2-1) to (2-2), which are the second components of the present invention, will be described. As the compound of the general formula (2-1), the following formula (2-1)
Compounds represented by any of -1) to (2-1-26) are preferably used. In these formulas, R ² and R ′ each independently represent an alkyl group or alkoxy group having 1 to 10 carbon atoms, or an alkoxymethyl group or alkenyl group having 2 to 10 carbon atoms.

As the compound of the formula (2-2), a compound represented by any of the following formulas (2-2-1) to (2-1-33) is preferably used. In these formulas, R ³ and R ′ are each independently an alkyl group having 1 to 10 carbon atoms, an alkoxy group, and a 2 to 10 carbon atoms.
Represents an alkoxymethyl group or an alkenyl group.

Next, the compound of the general formula (3), which is the third component of the present invention, will be described. As the compound of the general formula (3), a compound represented by any of the following formulas (3-1) to (3-2) is preferably used. In the formula, R ⁴ and R ⁵ each independently represent an alkyl group having 1 to 10 carbon atoms, an alkoxy group, an alkoxymethyl group having 2 to 10 carbon atoms or an alkenyl group.

Next, the functions of the compounds constituting the liquid crystal composition of the present invention will be described. The compound represented by the general formula (1), which is the first component of the present invention, has a dielectric anisotropy (Δ
ε) is in the range of about 15 to 20, and the clearing point (Tc)
Is in the range of about 0 to 70 ° C., and the refractive index anisotropy (Δn) is in the range of about 0.1 to 0.21, and is excellent in heat and ultraviolet light stability and chemical stability. For this reason, the compound represented by the general formula (1) of the present invention has a function of increasing Δn of a liquid crystal composition for a TFT particularly required to have high reliability and decreasing a threshold voltage.

The general formula (2-1) which is the second component of the present invention
Has a dielectric anisotropy (Δε) of about 6
And the clearing point (Tc) is approximately −20 to
80 ° C. range, refractive index anisotropy (Δn) of about 0.12
０．１0.17, which is excellent in heat and ultraviolet light stability and chemical stability. For this reason, the compound represented by the general formula (2-1) in the present invention increases Δn of the liquid crystal composition for a TFT particularly required to have high reliability, and may increase the threshold voltage depending on the structure of the compound. It has a function to make it smaller.

The general formula (2-2) which is the second component of the present invention
Has a dielectric anisotropy (Δε) of about 7
And the clearing point (Tc) is about 80 to 1
80 ° C. range, refractive index anisotropy (Δn) of about 0.18
０．２0.26, which is excellent in heat and ultraviolet light stability and chemical stability. For this reason, the compound represented by the general formula (2-2) in the present invention has a function of increasing Δn of the liquid crystal composition for TFT, which particularly requires high reliability, and increasing a clearing point.

The compound represented by the general formula (3), which is the third component of the present invention, has a dielectric anisotropy (Δε) of about 0 and a clearing point (Tc) of about 220 to 270 ° C. And the refractive index anisotropy (Δn) is about 0.15 to 0.2
7, which is excellent in heat and ultraviolet light stability and chemical stability. Therefore, in the present invention, the general formula (3)
Is particularly required for TFTs that require high reliability
Has the function of increasing the clearing point of the liquid crystal composition.

The present invention is characterized in that it has an appropriate threshold voltage while satisfying general characteristics required for a conventional liquid crystal composition for AM-LCD, and particularly has high reliability and a large value of Δn. Liquid crystal composition. In order to exhibit these features, the present invention provides a liquid crystal composition having a configuration containing a first component and a second component, or a first component, a second component, and a third component.

The preferred component ratios of the compounds constituting the liquid crystal composition of the present invention and the reasons thereof will be described below.

The content of the first component of the present invention is preferably 3 to 50% by weight based on the total weight of the liquid crystal composition. More preferably, it is 5 to 40% by weight. If the amount is less than 3% by weight, a composition having high reliability and a large value of Δn, which is the object of the present invention, and having an appropriate threshold voltage may not be obtained. Also, the mixing ratio of the first component is 50% by weight.
By weight, and the viscosity of the liquid crystal composition is increased, and if the clearing point (NI point) is lowered, there is a case where the nematic phase lower limit temperature (T _C) is increased.

The content of the second component of the present invention is preferably 3 to 90% by weight based on the total weight of the liquid crystal composition. More preferably, it is 5 to 80% by weight. If the amount is less than 3% by weight, a composition having an appropriate threshold voltage, high reliability and a large value of Δn, which is the object of the present invention, may not be obtained. The mixing ratio of the second component is 90% by weight.
By weight, and the viscosity of the liquid crystal composition is increased, and if the clearing point (NI point) is lowered, there is a case where the nematic phase lower limit temperature (T _C) is increased.

The content of the third component of the present invention is preferably 3 to 40% by weight based on the total weight of the liquid crystal composition. More preferably, it is 5 to 30% by weight. If the mixing ratio of said third component exceeds 40 wt%, and the viscosity of the liquid crystal composition is increased, and if the threshold voltage is increased, there is a case where the nematic phase lower limit temperature (T _C) increases .

The liquid crystal composition of the present invention is represented by the general formula shown above for the purpose of adjusting the threshold voltage, the nematic temperature range, Δn, Δε, etc. within a range that does not impair the purpose of the present invention. Liquid crystal compounds other than the above compounds may be used in combination. The liquid crystal composition of the present invention is prepared by a conventional method. Generally, a method is used in which various component compounds are mixed and dissolved at a high temperature. The liquid crystal composition of the present invention can be used by adding a chiral dopant to induce a helical structure of liquid crystal molecules and obtain a required twist angle.

The liquid crystal composition of the present invention comprises a merocyanine compound,
A styryl-based, azo-based, azomethine-based, azoxy-based, quinophthalone-based, anthraquinone-based, and tetrazine-based dichroic dye can be added to be used as a guest-host (GH) mode liquid crystal composition. Further, the liquid crystal composition of the present invention can also be used as a liquid crystal composition for AM-LCD of which Δnd has a second minimum (for example, Δnd = ・ 1 μm). Furthermore, NCAP made by microencapsulating nematic liquid crystal,
It can also be used as a liquid crystal composition for a polymer dispersed liquid crystal display (PDLCD) represented by a polymer network liquid crystal display (PNLCD) in which a three-dimensional network polymer is formed in a liquid crystal. In addition, it can be used as a liquid crystal composition for an in-plane switching (IPS) mode, a birefringence control (ECB) mode such as OCB, and a dynamic scattering (DS) mode.

[0028]

The present invention will be described below in detail with reference to examples, but the present invention is not limited to these examples. The mixing ratios of the components shown in Comparative Examples and Examples are all by weight. Compounds used in Comparative Examples and Examples are shown in Table 1.
Are represented by symbols based on the definitions shown in Table 1.

[0029]

[Table 1]

The characteristics of the liquid crystal composition were measured and determined as follows. The maximum temperature T _NI of the nematic liquid crystal phase was determined by observing the state of the nematic liquid crystal phase when it changes from a nematic phase to an isotropic liquid phase in a heating process using a polarizing microscope, and measuring the temperature. Lower limit temperature _{T C} of a nematic liquid crystal phase, 0 ℃, -10 ℃, -20 ℃, and -30 ° C.
The liquid crystal composition was allowed to stand for 30 days in the freezer maintained at each temperature, and the temperature of the freezer at which a crystal or a smectic phase appeared was determined. For example, one liquid crystal composition takes a nematic state at −20 ° C.,
When a crystallization or smectic state at 30 ° C., the T _C of the liquid crystal composition <- is expressed as 20 ° C..

The refractive index anisotropy Δn is determined by using a light source lamp having a wavelength of 589 nm and measuring the refractive index anisotropy Δn by using an Abbe refractometer.
Measured in ° C. The dielectric anisotropy Δε was measured at 25 ° C.
The threshold voltage Vth was obtained from a VT curve measured at 25 ° C. by injecting into an 80 ° twist cell having a cell thickness d of about 9 μm.

The voltage holding ratio VHR was measured by an area method according to the method for measuring the voltage holding ratio of a liquid crystal material and an alignment film specified by EIAJ ED-2521A of the Japan Electronic Opportunities Manufacturers Association. This measuring method is disclosed in
It is also described in the official gazette. That is, a liquid crystal element prepared by enclosing a liquid crystal composition of a sample in a TN cell having a cell thickness of 6 μm provided with a polyimide-based alignment film was subjected to a pulse voltage of a peak value of ± 5 V and a pulse width of 60 μs as an AC voltage having a cycle of 30 Hz. The voltage waveform between the electrodes of the liquid crystal element at the time of application is observed with a cathode ray oscilloscope. The ratio of the integrated value (area) of the absolute value of the observed voltage to the product (area) of the applied voltage and the period in a unit cycle was expressed as a percentage, and was defined as a voltage holding ratio.

Comparative Example 1 As a composition similar to the composition of the present invention,
Example 5 discloses a composition having the largest Δn in US Pat. This composition is as follows. As a similar (but not equivalent) compound of the general formula (1) in the present invention, 3-BB (F) B (F, F) -OCF3 7% 3-BB (F, F) 2B (F, F)- CL 7% 3-B (F) BB (F, F) -F 10% 3-BB (F, F) B (F, F) -CL 8% As other components, 3-H2HB (F, F) -F 9% 4-H2HB (F, F) -F 8% 3-H2HB-OCF3 2% 3-HHB (F, F) -F 10% 4-HHB (F, F) -F 5% 3-HBB (F, F) -F 27% 3-HB (F, F) B (F) -F 2% 3-HHBB (F, F) -F 5% The characteristics of the composition are as follows. _{T NI = 62.5 ℃ T C <} -30 ℃ Δn = 0.128 Vth = 0.86V VHR (25 ℃) = 99.3% VHR formula at (100 ℃) = 96.2% The present invention (1 This composition, which contains compounds analogous to (1), has the disadvantage that, compared to the composition according to the invention, the Δn is considerably lower and the clearing point T _NI is lower.

Comparative Example 2 As a composition similar to the composition of the present invention, JP-A-8-7
Example 7 discloses a composition having the largest Δn in 3857. This composition was prepared. 2-HBEB (F, F) -F 5% 5-HBEB (F, F) -F 5% 3-BBEB (F, F) -F 5% 4-HHB-CL 10% 3-HHB (F, F ) -F 10% 5-HHB (F, F) -F 10% 3-H2BB (F, F) -F 10% 4-H2BB (F, F) -F 10% 5-H2BB (F, F)- F 10% 3-HVHB (F) -F 5% 4-HVHB (F, F) -F 7% 3-H2BVB-2 3% 3-HB (F) VB-4 10% It is as follows. T _NI = 101.5 ° C. Δn = 0.138 Vth = 1.73V VHR (25 ° C.) = 98.5% VHR (100 ° C.) = 91.0% This composition is compared with the composition of the present invention. Δn is small,
It has the disadvantage of low VHR at high temperatures.

Comparative Example 3 The following composition disclosed in DE 3921836 was prepared. As a compound represented by the general formula (3) in the present invention, 5-HBB (F) B-3 10% As other components, ZLI-1565 (manufactured by Merck) 90% The characteristics of the above composition are as follows. It is on the street. _{T NI = 117.0 ℃ T C <} -20 ℃ Δn = 0.163 Vth = 2.63V Δε = 7.9 VHR (25 ℃) = 96.8% VHR (100 ℃) = 92.2% The composition Has a smaller Δn than the composition of the present invention,
There is a disadvantage that the threshold voltage Vth is very large and is not suitable for low voltage driving.

Example 1 As a compound represented by the general formula (1) in the present invention, 5-BBB (F, F) -F 5% As a compound represented by the general formula (2-1), 3-BB (F, F) CF2OB (F, F) -F 20% As a compound represented by the general formula (2-2), 3-BB (F, F) CF2OBB-5 10% 5-BB (F, F) CF2OBB-2 5% As a compound represented by the general formula (3), 5-HBB (F) B-2 10% 5-HBB (F) B-3 10% As other components, 3-HBB (F, F) -F 30% 5-HBB (F, F) -F 10% The properties of the composition were as follows. _{T NI = 114.0 ℃ T C <} -20 ℃ Δn = 0.178 Vth = 1.89V Δε = 10.7 VHR (25 ℃) = 99.3% VHR (100 ℃) = 96.4%

Example 2 As a compound represented by the general formula (1) in the present invention, 3-BBB (F, F) -F 5% As a compound represented by the general formula (2-1), 3-BB (F, F) CF2OB (F, F) -F 20% As a compound represented by the general formula (2-2), 3-BB (F, F) CF2OBB-5 5% 5-BB (F, F) CF2OBB-2 5% 2-BB (F, F) CF2OBB-5 5% As a compound represented by the general formula (3), 5-HBB (F) B-2 10% 5-HBB (F) B-3 10% As other components, 3-HBB (F, F) -F 20% 5-HBB (F, F) -F 20% The characteristics of the composition were as follows. _{T NI = 114.3 ℃ T C <} -30 ℃ Δn = 0.178 Vth = 1.85V Δε = 11.1 VHR (25 ℃) = 99.2% VHR (100 ℃) = 96.3%

Example 3 As a compound represented by the general formula (1) in the present invention, 3-BBB (F, F) -F 5% As a compound represented by the general formula (2-1), 3-BB (F, F) CF2OB (F, F) -F 30% 5-BB (F, F) CF2OB (F, F) -F 10% As a compound represented by the general formula (2-2), 3-BB (F, F) CF2OBB-5 5% 5-BB (F, F) CF2OBB-5 5% 2-BB (F, F) CF2OBB-5 5% As a compound represented by the general formula (3), HBB (F) B-2 10% 5-HBB (F) B-3 10% As other components, 3-HBB (F, F) -F 20% The characteristics of the above composition were as follows. . _{T NI = 107.5 ℃ T C <} -30 ℃ Δn = 0.177 Vth = 1.70V Δε = 12.6 VHR (25 ℃) = 98.2% VHR (100 ℃) = 96.2%

Example 4 As a compound represented by the general formula (1) in the present invention, 3-BBB (F, F) -F 5% 3-BB2B (F, F) -F 10% 3-B2BB (F , F) -F 10% As a compound represented by the general formula (2-1), 3-BB (F, F) CF2OB (F, F) -F 20% 3-BB (F, F) CF2OB-F 5% 3-BB (F, F) CF2OB-2 5% As a compound represented by the general formula (2-2), 3-BB (F, F) CF2OBB-5 5% 5-BB (F, F) CF2OBB-2 5% 2-BB (F, F) CF2OBB-5 5% 5-BB (F, F) CF2OBB-3 5% 5-BB (F, F) CF2OBB-5 5% In the general formula (3) As a compound represented, 5-HBB (F) B-2 5% 5-HBB (F) B-3 5% As other components, Characteristics of -HBB (F, F) -F 10% above composition were as follows. _{T NI = 96.6 ℃ T C <} -30 ℃ Δn = 0.183 Vth = 1.59V Δε = 13.2 VHR (25 ℃) = 98.6% VHR (100 ℃) = 95.0%

Example 5 As a compound represented by the general formula (1) in the present invention, 3-BBB (F, F) -F 3% 3-BB2B (F, F) -F 10% 3-B2BB (F , F) -F 10% As a compound represented by the general formula (2-1), 2-BB (F, F) CF2OB (F, F) -F 2% 3-BB (F, F) CF2OB (F , F) -F 20% 5-BB (F, F) CF2OB (F, F) -F 10% As a compound represented by the general formula (2-2), 3-BB (F, F) CF2OBB-5 5% 5-BB (F, F) CF2OBB-2 5% 2-BB (F, F) CF2OBB-5 5% 5-BB (F, F) CF2OBB-F 5% Represented by the general formula (3) As a compound, 5-HBB (F) B-2 5% 5-HBBH-3 5% 5-HB (F) BH-3 5% As other components Characteristics of 2-HBB (F) -F 2.5% 3-HBB (F) -F 2.5% 5-HBB (F) -F 5% above composition were as follows. _{T NI = 100.8 ℃ T C <} -20 ℃ Δn = 0.172 Vth = 1.57V Δε = 13.9 VHR (25 ℃) = 98.7% VHR (100 ℃) = 95.2%

Example 6 As a compound represented by the general formula (1) in the present invention, 3-BBB (F, F) -F 5% 3-BB2B (F, F) -F 10% 3-B2BB (F , F) -F 10% As a compound represented by the general formula (2-1), 3-BB (F, F) CF2OB (F, F) -F 20% represented by the general formula (2-2) As a compound, 3-BB (F, F) CF2OBB-5 5% 5-BB (F, F) CF2OBB-2 5% 2-BB (F, F) CF2OBB-5 5% It is represented by the general formula (3). 5-HBB (F) B-2 5% 5-HBB (F) B-3 5% As other components, 2-HBB (F) -F 10% 3-HBB (F) -F10 % 5-HBB (F) -F 10% The characteristics of the composition were as follows. _{T NI = 117.6 ℃ T C <} -30 ℃ Δn = 0.188 Vth = 1.79V Δε = 11.0 VHR (25 ℃) = 98.9% VHR (100 ℃) = 95.6%

Example 7 As a compound represented by the general formula (1) in the present invention, 3-BBB (F, F) -F 5% 3-BB2B (F, F) -F 10% 3-B2BB (F , F) -F 10% As a compound represented by the general formula (2-1), 3-BB (F, F) CF2OB (F, F) -F 20% 3-BB (F, F) CF2OB (F ) -OCF3 5% As a compound represented by the general formula (2-2), 3-BB (F, F) CF2OBB-5 5% 5-BB (F, F) CF2OBB-2 5% 2-BB (F , F) CF2OBB-5 5% 5-BB (F, F) CF2OBB-3 5% 5-BB (F, F) CF2OBB-F 5% 5-BB (F, F) CF2OBB (F) -F 5% 3-BB (F, F) CF2OBB-F 5% 5-BB (F, F) CF2OBB-5-5% Other components , Characteristic of the 3-HBB (F, F) -F 10% above composition were as follows. _{T NI = 93.1 ℃ T C <} -30 ℃ Δn = 0.184 Vth = 1.49V Δε = 14.5 VHR (25 ℃) = 98.5% VHR (100 ℃) = 94.8%

Example 8 As a compound represented by the general formula (1) in the present invention, 3-BBB (F, F) -F 5% 3-BB2B (F, F) -F 10% 3-B2BB (F , F) -F 10% As a compound represented by the general formula (2-1), 3-BB (F, F) CF2OB (F, F) -F 20% 3-BBCF2OB (F, F) -F10 % As a compound represented by the general formula (2-2), 3-BB (F, F) CF2OBB-5 5% 5-BB (F, F) CF2OBB-2 5% 2-BB (F, F) CF2OBB -5 5% As a compound represented by the general formula (3), 5-HBB (F) B-2 10% 5-HBB (F) B-3 10% As another component, 2-HBB-F 3% 3-HBB-F 4% 5-HBB-F 3% The characteristics of the composition were as follows. _{T NI = 113.6 ℃ T C <} -30 ℃ Δn = 0.189 Vth = 1.65V Δε = 12.6 VHR (25 ℃) = 98.7% VHR (100 ℃) = 95.2%

Example 9 As a compound represented by the general formula (1) in the present invention, 3-BBB (F, F) -F 5% 3-BB2B (F, F) -F 10% 3-B2BB (F , F) -F 5% As a compound represented by the general formula (2-1), 3-BB (F, F) CF2OB (F, F) -F 15% 3-BB (F, F) CF2OB (F ) -OCF3 10% 3-BB (F, F) CF2OB (F) -F 15% As a compound represented by the general formula (2-2), 3-BB (F, F) CF2OBB-5 10% 5- BB (F, F) CF2OBB-2 5% 2-BB (F, F) CF2OBB-5 5% 5-BB (F, F) CF2OBB-3 5% 5-BB (F, F) CF2OBB-5 5% As the compound represented by the general formula (3), 5-HBB (F) B-2 5% 5-HBB (F) B-3 5% The properties of the composition were as follows. _{T NI = 82.8 ℃ T C <} -30 ℃ Δn = 0.187 Vth = 1.34V Δε = 14.7 VHR (25 ℃) = 98.5% VHR (100 ℃) = 94.9%

Example 10 As a compound represented by the general formula (1) in the present invention, 3-BBB (F, F) -F 5% 3-BB2B (F, F) -F 10% 3-B2BB (F , F) -F 10% As a compound represented by the general formula (2-1), 3-BB (F, F) CF2OB (F, F) -F 20% 5-BB (F, F) CF2OB (F , F) -F 10% As a compound represented by the general formula (2-2), 3-BB (F, F) CF2OBB-5 10% 5-BB (F, F) CF2OBB-2 5% 2-BB (F, F) CF2OBB-5 5% 5-BB (F, F) CF2OBB-3 5% 5-BB (F, F) CF2OBB-F 5% 3-BB (F, F) CF2OBB-F 5% 5 -BB (F, F) CF2OBB-5 10% The properties of the composition were as follows. _{T NI = 95.0 ℃ T C <} -30 ℃ Δn = 0.189 Vth = 1.44V Δε = 14.2 VHR (25 ℃) = 98.6% VHR (100 ℃) = 95.1%

Example 11 As a compound represented by the general formula (1) in the present invention, 3-BBB (F, F) -F 5% 3-BB2B (F, F) -F 10% 3-B2BB (F , F) -F 10% As a compound represented by the general formula (2-1), 3-BB (F, F) CF2OB (F, F) -F 20% 3-BB (F, F) CF2OB (F , F) -OCF3 10% 3-BBCF2OB (F, F) -F 10% As a compound represented by the general formula (2-2), 3-BB (F, F) CF2OBB-5 5% 5-BB ( F, F) CF2OBB-2 5% 2-BB (F, F) CF2OBB-5 5% As a compound represented by the general formula (3), 5-HBB (F) B-2 10% 5-HBB (F ) B-3 10% The properties of the composition were as follows. _{T NI = 103.7 ℃ T C <} -30 ℃ Δn = 0.186 Vth = 1.46V Δε = 14.9 VHR (25 ℃) = 98.5% VHR (100 ℃) = 94.8%

Example 12 As a compound represented by the general formula (1) in the present invention, 3-BBB (F, F) -F 3% 3-BB2B (F, F) -F 10% 3-B2BB (F , F) -F 10% As a compound represented by the general formula (2-1), 2-BB (F, F) CF2OB (F, F) -F 2% 3-BB (F, F) CF2OB (F , F) -F 20% 5-BB (F, F) CF2OB (F, F) -F 10% 3-BB (F, F) CF2OB-CL 3% Compound represented by the general formula (2-2) 3-BB (F, F) CF2OBB-5 10% 5-BB (F, F) CF2OBB-2 5% 2-BB (F, F) CF2OBB-5 5% 5-BB (F, F) CF2OBB -34% 5-BB (F, F) CF2OBB-5 8% As a compound represented by the general formula (3), 5-HBB (F Characteristics of B-2 5% 5-HBB (F) B-3 5% above composition were as follows. _{T NI = 96.2 ℃ T C <} -30 ℃ Δn = 0.185 Vth = 1.48V Δε = 15.0 VHR (25 ℃) = 98.6% VHR (100 ℃) = 95.0%

Example 13 As a compound represented by the general formula (1) in the present invention, 3-BB2B (F, F) -F 15% 3-B2BB (F, F) -F 15% General formula (2- As a compound represented by 1), 3-BB (F, F) CF2OB (F, F) -F 20% As a compound represented by the general formula (2-2), 3-BB (F, F) CF2OBB -5 10% 5-BB (F, F) CF2OBB-2 5% As a compound represented by the general formula (3), 5-HBB (F) B-2 10% 5-HBB (F) B-3 10 % As other components, 2-HBB (F) -F 3.5% 3-HBB (F) -F 4% 5-HBB (F) -F 7.5% The characteristics of the composition are as follows. Became. _{T NI = 111.4 ℃ T C <} -20 ℃ Δn = 0.186 Vth = 1.60V Δε = 13.2 VHR (25 ℃) = 98.4% VHR (100 ℃) = 94.7%

Example 14 As a compound represented by the general formula (1) in the present invention, 3-BBB (F, F) -F 5% 3-BB2B (F, F) -F 15% 3-B2BB (F , F) -F 15% As a compound represented by the general formula (2-1), 3-BB (F, F) CF2OB (F, F) -F 10% represented by the general formula (2-2) As the compound, 3-BB (F, F) CF2OBB-5 10% 5-BB (F, F) CF2OBB-2 5% 2-BB (F, F) CF2OBB-5 5% 5-BB (F, F) CF2OBB-3 5% 5-BB (F, F) CF2OBB-F 5% 5-BB (F, F) CF2OBB-5 5% As a compound represented by the general formula (3), 5-HBB (F) B -2 10% 5-HBB (F) B-3 10% The properties of the composition were as follows. _{T NI = 126.7 ℃ T C <} -20 ℃ Δn = 0.206 Vth = 1.75V Δε = 12.3 VHR (25 ℃) = 98.4% VHR (100 ℃) = 94.5%

Example 15 As a compound represented by the general formula (1) in the present invention, 3-BBB (F, F) -F 5% 3-BB2B (F, F) -F 10% The general formula (2- As the compound represented by 1), 3-BB (F, F) CF2OB (F, F) -F 20% 3-BB (F, F) CF2OB (F, F) -OCF3 10% General formula (2- As the compound represented by 2), 3-BB (F, F) CF2OBB-5 5% 5-BB (F, F) CF2OBB-2 5% 2-BB (F, F) CF2OBB-5 5% General formula As a compound represented by (3), 5-HBB (F) B-2 10% 5-HBB (F) B-3 10% As other components, 3-HBB (F, F) -F 20% The properties of the composition were as follows. _{T NI = 107.6 ℃ T C <} -30 ℃ Δn = 0.181 Vth = 1.61V Δε = 14.1 VHR (25 ℃) = 98.5% VHR (100 ℃) = 95.5%

Example 16 As a compound represented by the general formula (1) in the present invention, 3-BBB (F, F) -F 5% 3-BB2B (F, F) -F 10% The general formula (2- As the compound represented by 1), 3-BB (F, F) CF2OB (F, F) -F 20% 3-BB (F, F) CF2OB-OCF3 10% represented by the general formula (2-2) As a compound, 3-BB (F, F) CF2OBB-5 5% 5-BB (F, F) CF2OBB-2 5% 2-BB (F, F) CF2OBB-5 5% Table represented by general formula (3) 5-HBB (F) B-2 10% as a compound to be used 5-HBB (F) B-3 10% As other components, 3-HBB (F, F) -F 20% It was as follows. _{T NI = 109.8 ℃ T C <} -30 ℃ Δn = 0.184 Vth = 1.66V Δε = 13.4 VHR (25 ℃) = 98.8% VHR (100 ℃) = 95.4%

Example 17 As a compound represented by the general formula (1) in the present invention, 3-BBB (F, F) -F 5% 3-BB2B (F, F) -F 10% 3-B2BB (F , F) -F 5% As a compound represented by the general formula (2-1), 3-BB (F, F) CF2OB (F, F) -F 20% 3-BB (F, F) CF2OB (F , F) -CF3 5% As a compound represented by the general formula (2-2), 3-BB (F, F) CF2OBB-5 5% 5-BB (F, F) CF2OBB-2 5% 2-BB (F, F) CF2OBB-5 5% As a compound represented by the general formula (3), 5-HBB (F) B-2 10% 5-HBB (F) B-3 10% -HBB (F) -F 5% 3-HBB (F) -F 5% 5-HBB (F) -F 10% It was as follows. _{T NI = 108.5 ℃ T C <} -30 ℃ Δn = 0.183 Vth = 1.60V Δε = 14.3 VHR (25 ℃) = 98.8% VHR (100 ℃) = 95.1%

Example 18 As a compound represented by the general formula (1) in the present invention, 3-BBB (F, F) -F 5% 3-BB2B (F, F) -F 10% The general formula (2- As the compound represented by 1), 3-BB (F, F) CF2OB (F, F) -F 20% 3-BB (F, F) CF2OB (F, F) -OCF3 10% General formula (2- As the compound represented by 2), 3-BB (F, F) CF2OBB-5 5% 5-BB (F, F) CF2OBB-2 5% 2-BB (F, F) CF2OBB-5 5% General formula As a compound represented by (3), 5-HBB (F) B-2 10% 5-HBB (F) B-3 10% As another component, 3-HBB (F, F) -F 10% 5 -HBB (F, F) -F 10% The characteristics of the composition were as follows. _{T NI = 114.4 ℃ T C <} -30 ℃ Δn = 0.187 Vth = 1.69V Δε = 12.1 VHR (25 ℃) = 98.7% VHR (100 ℃) = 95.3%

Example 19 As a compound represented by the general formula (1) in the present invention, 3-BBB (F, F) -F 5% 3-BB2B (F, F) -F 5% 3-B2BB (F , F) -F 5% As a compound represented by the general formula (2-1), 3-BB (F, F) CF2OB (F, F) -F 20% represented by the general formula (2-2) As a compound, 3-BB (F, F) CF2OBB-5 5% 5-BB (F, F) CF2OBB-2 5% 2-BB (F, F) CF2OBB-5 5% 3-BB (F, F) CF2OBB (F, F) -F 5% 5-BB (F, F) CF2OBB (F, F) -F 5% As a compound represented by the general formula (3), 5-HBB (F) B-2 10 % 5-HBB (F) B-3 10% As other components, 3-HBB (F, F) -F 20% It became like. _{T NI = 113.9 ℃ T C <} -30 ℃ Δn = 0.188 Vth = 1.64V Δε = 12.7 VHR (25 ℃) = 98.4% VHR (100 ℃) = 94.5%

Example 20 As a compound represented by the general formula (1) in the present invention, 3-BBB (F, F) -F 5% 3-BB2B (F, F) -F 5% 3-B2BB (F , F) -F 5% As a compound represented by the general formula (2-1), 3-BB (F, F) CF2OB (F, F) -F 20% represented by the general formula (2-2) As a compound, 3-BB (F, F) CF2OBB-5 5% 5-BB (F, F) CF2OBB-2 5% 2-BB (F, F) CF2OBB-5 5% 3-BB (F, F) CF2OBB (F) -OCF3 5% 5-BB (F, F) CF2OBB (F) -OCF3 5% As a compound represented by the general formula (3), 5-HBB (F) B-2 10% 5-HBB (F) B-3 10% As other component, 3-HBB (F, F) -F 20% Characteristics of the above composition , It was as follows. _{T NI = 115.4 ℃ T C <} -30 ℃ Δn = 0.189 Vth = 1.65V Δε = 12.8 VHR (25 ℃) = 98.5% VHR (100 ℃) = 94.9%

Example 21 As a compound represented by the general formula (1) in the present invention, 5-BBB (F, F) -F 5% As a compound represented by the general formula (2-1), 3-BB (F, F) CF2OB (F, F) -F 20% As a compound represented by the general formula (2-2), 3-BB (F, F) CF2OBB-5-8% 5-BB (F, F) CF2OBB-2 5% 5-BB (F, F) CF2OBB-3 3% 5-BB (F, F) CF2OBB-F 3% As a compound represented by the general formula (3), 5-HBB (F) B -2 10% 5-HBB (F) B-3 10% As other components, 3-HBB (F, F) -F 16% 2-HBB (F) -F 5% 3-HBB (F) -F 5% 5-HBB (F) -F 10% The properties of the composition were as follows. _{T NI = 125.7 ℃ T C <} -30 ℃ Δn = 0.186 Vth = 1.97V Δε = 9.6 VHR (25 ℃) = 99.2% VHR (100 ℃) = 96.1%

Example 22 As a compound represented by the general formula (1) in the present invention, 5-BBB (F, F) -F 5% 3-B2BB (F, F) -F 5% The general formula (2- As a compound represented by 1), 3-BB (F, F) CF2OB (F, F) -F 25% As a compound represented by the general formula (2-2), 3-BB (F, F) CF2OBB -5 10% 5-BB (F, F) CF2OBB-2 5% 5-BB (F, F) CF2OBB-3 5% 5-BB (F, F) CF2OBB-F 5% Expressed by the general formula (3). 5-HBB (F) B-2 10% 5-HBB (F) B-3 10% As the other component, 3-HBB (F, F) -F 5% 2-HBB (F) -F 3.5% 3-HBB (F) -F 4% 5-HBB (F) -F 7.5% It became way. _{T NI = 122.3 ℃ T C <} -30 ℃ Δn = 0.194 Vth = 2.01V Δε = 10.2 VHR (25 ℃) = 98.9% VHR (100 ℃) = 95.5%

Example 23 As a compound represented by the general formula (1) in the present invention, 5-BBB (F, F) -F 5% As a compound represented by the general formula (2-1), 3-BB (F, F) CF2OB (F, F) -F 20% As a compound represented by the general formula (2-2), 3-BB (F, F) CF2OBB-5 5% 5-BB (F, F) CF2OBB-2 5% 5-BB (F, F) CF2OBB-3 5% 5-BB (F, F) CF2OBB-5 5% As a compound represented by the general formula (3), 5-HBB (F) B -2 10% 5-HBB (F) B-3 10% As other components, 3-HBB (F, F) -F 25% 5-HBB (F, F) -F 10% It was as follows. _{T NI = 118.4 ℃ T C <} -30 ℃ Δn = 0.185 Vth = 1.75V Δε = 11.6 VHR (25 ℃) = 99.2% VHR (100 ℃) = 96.2%

Example 24 As a compound represented by the general formula (1) in the present invention, 3-BBB (F, F) -F 3% 5-BBB (F, F) -F 5% 3-BB2B (F , F) -F 5% 3-B2BB (F, F) -F 5% As a compound represented by the general formula (2-1), 3-BB (F, F) CF2OB (F, F) -F23 % As a compound represented by the general formula (2-2), 3-BB (F, F) CF2OBB-5 8% 5-BB (F, F) CF2OBB-2 5% 5-BB (F, F) CF2OBB -5% 5-BB (F, F) CF2OBB-F 5% 5-BB (F, F) CF2OBB-5 10% As a compound represented by the general formula (3), 5-HBB (F) B- 28% 5-HBB (F) B-3 8% As other components, 3-HBB (F, F) -F 10% It has become as follows. _{T NI = 117.9 ℃ T C <} -20 ℃ Δn = 0.194 Vth = 1.74V Δε = 11.6 VHR (25 ℃) = 98.8% VHR (100 ℃) = 95.4%

Example 25 As a compound represented by the general formula (1) in the present invention, 3-BBB (F, F) -F 5% 3-BB2B (F, F) -F 15% 3-B2BB (F , F) -F 15% As a compound represented by the general formula (2-1), 3-BB (F, F) CF2OB (F, F) -F 20% As a compound represented by the general formula (3) 5-HBB (F) B-2 10% 5-HBB (F) B-3 10% As other components, 2-HBB (F) -F 6% 3-HBB (F) -F 6.5% 5-HBB (F) -F 12.5% The characteristics of the composition were as follows. _{T NI = 98.9 ℃ T C <} -30 ℃ Δn = 0.169 Vth = 1.63V Δε = 12.8 VHR (25 ℃) = 98.6% VHR (100 ℃) = 95.1%

Example 26 As a compound represented by the general formula (1) in the present invention, 3-BBB (F, F) -F 5% 5-BBB (F, F) -F 5% 3-BB2B (F , F) -F 15% 3-B2BB (F, F) -F 15% As a compound represented by the general formula (2-2), 3-BB (F, F) CF2OBB-5 10% 5-BB ( F, F) CF2OBB-2 5% 2-BB (F, F) CF2OBB-5 5% 5-BB (F, F) CF2OBB-3 5% 5-BB (F, F) CF2OBB-F 5% 5- BB (F, F) CF2OBB-5 10% As a compound represented by the general formula (3), 5-HBB (F) B-2 10% 5-HBB (F) B-3 10% Characteristics of the composition Was as follows: _{T NI = 143.0 ℃ T C <} -10 ℃ Δn = 0.218 Vth = 2.09V Δε = 9.6 VHR (25 ℃) = 98.3% VHR (100 ℃) = 94.7%

Example 27 As a compound represented by the general formula (1) in the present invention, 3-BBB (F, F) -F 5% 3-BB2B (F, F) -F 10% 3-B2BB (F , F) -F 10% As a compound represented by the general formula (2-1), 3-BB (F, F) CF2OB (F, F) -F 30% 5-BB (F, F) CF2OB (F , F) -F 16% 3-BB (F, F) CF2OB (F) -F 5% As a compound represented by the general formula (3), 5-HBB (F) B-2 12% 5-HBB ( F) B-3 12% The properties of the composition were as follows. _{T NI = 80.2 ℃ T C <} -30 ℃ Δn = 0.167 Vth = 1.27V Δε = 17.7 VHR (25 ℃) = 98.6% VHR (100 ℃) = 94.9%

Example 28 As the compound represented by the general formula (1) in the present invention, 3-BBB (F, F) -F 5% 5-BBB (F, F) -F 5% 3-BB2B (F , F) -F 5% 3-B2BB (F, F) -F 10% As a compound represented by the general formula (2-1), 2-BB (F, F) CF2OB (F, F) -CF35 % 3-BB (F, F) CF2OB (F, F) -CF3 10% 5-BB (F, F) CF2OB (F, F) -CF3 10% As a compound represented by the general formula (2-2) 3-BB (F, F) CF2OBB-5 8% 5-BB (F, F) CF2OBB-2 5% 5-BB (F, F) CF2OBB-3 5% 5-BB (F, F) CF2OBB- F 5% 5-BB (F, F) CF2OBB-5 9% As a compound represented by the general formula (3), 5-HBB (F) Characteristics of -2 9% 5-HBB (F) B-3 9% above composition were as follows. _{T NI = 120.3 ℃ T C <} -20 ℃ Δn = 0.206 Vth = 1.74V Δε = 11.9 VHR (25 ℃) = 98.7% VHR (100 ℃) = 95.0%

Example 29 As a compound represented by the general formula (1) in the present invention, 3-BBB (F, F) -F 5% 5-BBB (F, F) -F 5% The general formula (2- As a compound represented by 1), 3-BB (F, F) CF2OB (F, F) -F 15% As a compound represented by the general formula (2-2), 3-BB (F, F) CF2OBB -5 5% 5-BB (F, F) CF2OBB-2 5% 5-BB (F, F) CF2OBB-3 3% 5-BB (F, F) CF2OBB-F 3% 5-BB (F, F ) CF2OBB-5 3% As a compound represented by the general formula (3), 5-HBB (F) B-2 10% 5-HBB (F) B-3 10% As other components, 3-H2BB (F , F) -F 8% 3-H2HB (F, F) -F 5% 5-H2HB (F, F) -F 5% 2-HBB ( ) Characteristics of -F 5% 3-HBB (F) -F 5% 5-HBB (F) -F 5% 3-HHB-CL 3% above composition were as follows. _{T NI = 127.7 ℃ T C <} -30 ℃ Δn = 0.183 Vth = 2.04V Δε = 9.6 VHR (25 ℃) = 99.3% VHR (100 ℃) = 96.2%

Example 30 As a compound represented by the general formula (1) in the present invention, 3-BBB (F, F) -F 5% 3-B2BB (F, F) -F 5% 3-BB2B (F , F) -F 5% As a compound represented by the general formula (2-1), 3-BB (F, F) CF2OB (F, F) -F 20% represented by the general formula (2-2) As a compound, 3-BB (F, F) CF2OBB-5 5% 5-BB (F, F) CF2OBB-2 5% 5-BB (F, F) CF2OBB-3 5% 5-BB (F, F) CF2OBB-F 5% As a compound represented by the general formula (3), 5-HBB (F) B-2 10% 5-HBB (F) B-3 10% As other components, 3-HBB (F, F) -F 5% 3-HHB (F, F) -F 7% 3-HH2B (F, F) -F 3% 2-HHB (F) -F2 0.5% 3-HHB (F) -F 2.5% 5-HHB (F) -F 5% The characteristics of the composition were as follows. _{T NI = 126.2 ℃ T C <} -30 ℃ Δn = 0.179 Vth = 2.02V Δε = 9.7 VHR (25 ℃) = 99.1% VHR (100 ℃) = 96.0%

Example 31 As the compound represented by the general formula (1) in the present invention, 3-BBB (F, F) -F 5% 5-BBB (F, F) -F 5% The general formula (2- As a compound represented by 1), 3-BB (F, F) CF2OB (F, F) -F 20% As a compound represented by the general formula (2-2), 3-BB (F, F) CF2OBB -5 8% 5-BB (F, F) CF2OBB-2 5% 5-BB (F, F) CF2OBB-3 3% 5-BB (F, F) CF2OBB-F 3% 5-BB (F, F ) CF2OBB-5 3% As a compound represented by the general formula (3), 5-HBB (F) B-2 10% 5-HBB (F) B-3 10% As other components, 3-H2BB (F , F) -F 5% 2-HBB (F) -F 5% 3-HBB (F) -F 5% 5-HBB (F) -F Characteristics of% 3-HH-4 3% 3-HB-O2 5% above composition were as follows. _{T NI = 125.7 ℃ T C <} -30 ℃ Δn = 0.186 Vth = 1.93V Δε = 9.3 VHR (25 ℃) = 99.2% VHR (100 ℃) = 96.2%

[0067]

The liquid crystal composition of the present invention has an appropriate threshold voltage while satisfying the general characteristics required for an active matrix type liquid crystal display device (AM-LCD), and particularly, in a high temperature region. High voltage holding ratio,
AM-LCD is a liquid crystal composition having a large refractive index anisotropy Δn.
It is also suitably used for display elements. Further, a liquid crystal display device formed using the liquid crystal composition of the present invention is a liquid crystal display device having a low driving voltage and a high response speed.

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) C09K 19/44 C09K 19/44 G02F 1/13 500 G02F 1/13 500 5F, Goi Kaigan, Ichihara, Ichihara, Japan F-term (reference) 4H027 BA01 BC04 BD04 BD05 BD07 BD08 BE05 CE04 CE05 CG04 CH04 CH05 CM01 CN04 CQ04 CR04 CT04 CU01 CU05 CW01

Claims (5)

[Claims] 1. A first component comprising a compound represented by the general formula (1) and a second component comprising at least one compound selected from the group consisting of the general formulas (2-1) and (2-2). A liquid crystal composition containing (Wherein, R ¹ represents an alkyl group having 1 to 10 carbon atoms;
² and R ³ are each independently an alkyl group having 1 to 10 carbon atoms;
An alkoxy group, an alkoxymethyl group having 2 to 10 carbon atoms,
Represents an alkenyl group, and Z ₁ and Z ₂ are each independently —C ₂ H
₄ - or a single bond, _{X 1} and _{X 2} are F each _{independently, Cl, CF 3, OCF 3} , OCF 2 H, 1~ carbon atoms
Represents an alkyl group, an alkoxy group, an alkoxymethyl group, an alkenyl group having 2 to 10 carbon atoms, Y ₁ , Y ₂ ,
Y _3, Y _4, represent _{Y 5, Y 6, Y 7} , Y 8, Y 9 and Y ₁₀ each independently H or F. ). 2. The liquid crystal composition according to claim 1, further comprising a third component comprising at least one compound selected from the compounds represented by the general formula (3). (Wherein, R ⁴ and R ⁵ each independently represent an alkyl group having 1 to 10 carbon atoms, an alkoxy group, an alkoxymethyl group or an alkenyl group having 2 to 10 carbon atoms, and A ₁ is a group wherein H at the side is substituted with F. And A ₂ represents a trans-1,4-cyclohexylene group or a 1,4-phenylene group. 3. The liquid crystal composition according to claim 2, comprising 3 to 50% by weight of the first component, 3 to 90% by weight of the second component and 3 to 40% by weight of the third component, based on the total weight of the liquid crystal composition. Liquid crystal composition. 4. The liquid crystal composition according to claim 3, wherein the second component is at least one compound selected from the group consisting of general formulas (2-1-a) and (2-2-a). (Wherein, R ² and R ³ each independently represent an alkyl group having 1 to 10 carbon atoms, an alkoxy group, or an alkenyl group having 2 to 10 carbon atoms, and X ₁ and X ₂ each independently represent F, Cl,
CF ₃ , OCF ₃ , an alkyl group having 1 to 10 carbon atoms, an alkoxy group or an alkenyl group having 2 to 10 carbon atoms,
Y ₃ , Y ₄ , Y ₅ , Y ₆ , Y ₉ and Y ₁₀ each independently represent H or F. ). 5. A liquid crystal display device comprising the liquid crystal composition according to claim 1.