CN105505405B - Liquid-crystal composition and its liquid crystal display device - Google Patents

Liquid-crystal composition and its liquid crystal display device Download PDF

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CN105505405B
CN105505405B CN201410560112.2A CN201410560112A CN105505405B CN 105505405 B CN105505405 B CN 105505405B CN 201410560112 A CN201410560112 A CN 201410560112A CN 105505405 B CN105505405 B CN 105505405B
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liquid crystal
compound
crystal composition
total weight
accounting
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CN105505405A (en
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刘云云
韩文明
丁文全
李鹏飞
姚利芳
戴慧娟
贺笛
徐海彬
张鹤鸣
马文阳
马定福
施红萍
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Jiangsu He Cheng Display Technology Co Ltd
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Jiangsu He Cheng Display Technology Co Ltd
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Abstract

The present invention provides a kind of liquid-crystal composition, comprising：The compound of at least one general formula I 1 and/or general formula I 2；The compound of at least one general formula II；The compound of at least one general formula III；And the compound of at least one general formulae IV.The liquid-crystal composition has the characteristic of wide suitable optical anisotropy, suitable dielectric anisotropy, appropriate clearing point, nematic temperature range, low viscosity, low threshold voltage and faster response speed, it is capable of the response time of faster devices, and low temperature storage stability is high, suitable for low temperature environment.Present invention also offers a kind of liquid crystal display device for including the liquid-crystal composition.

Description

Liquid crystal composition and liquid crystal display device thereof
Technical Field
The present invention relates to a liquid crystal composition, and more particularly, to a liquid crystal composition having suitable optical anisotropy, suitable dielectric anisotropy, suitable clearing point, low threshold voltage, and fast response speed, and its application in liquid crystal displays.
Background
Liquid crystal display devices are classified into types such as PC (phase change), TN (twisted nematic), STN (super twisted nematic), ECB (electrically controlled birefringence), OCB (optically compensated bend), IPS (in-plane switching), and VA (vertical alignment) according to a display mode of liquid crystal. Liquid crystal display elements are classified into a reflection type using natural light, a transmission type using backlight, and a semi-transmission type using both light sources of natural light and backlight, depending on the type of light source.
Liquid crystal materials need to have suitably high dielectric anisotropy, optical anisotropy, and good low-temperature mutual solubility and thermal stability. In addition, the liquid crystal material should also have low viscosity and short response time, low threshold voltage and high contrast. The anisotropy of the composition is further described with reference to a commercially available liquid crystal display device. The temperature range of the nematic phase is associated with the operating temperature range of the element. The upper limit temperature of the nematic phase is preferably 70 ℃ or higher, and the lower limit temperature of the nematic phase is preferably-10 ℃ or lower. The viscosity of the composition correlates to the response time of the element. In order to display animation in the element, it is preferable that the response time of the element is short. Therefore, it is preferable that the viscosity of the composition is small, and it is more preferable that the viscosity of the composition is small at a low temperature.
It is generally difficult for a single liquid crystal compound to exert its properties, and it is generally mixed with a plurality of other liquid crystal compounds to prepare a composition. In the existing liquid crystal compositions, the better characteristics can be obtained, but the compounds in the class have insufficient optical anisotropy, insufficient dielectric anisotropy and little contribution to the composition mixed to be large in delta n and delta epsilon, thereby being unfavorable for being used in products with small box thickness and directly causing the response speed to be not fast, such as the liquid crystal compositions disclosed in CN101796162A and CN1475547A, which have the disadvantages in different degrees.
Therefore, there is a need for a liquid crystal composition having a high upper limit temperature of a nematic phase and a low lower limit temperature of the nematic phase (i.e., a wide phase transition temperature range); low viscosity; suitable optical anisotropy; suitable dielectric anisotropy; good ultraviolet stability; at least one of good low-temperature storage stability and the like.
It is an object of the present invention to provide a liquid crystal composition having a low viscosity; low threshold voltage, high low-temperature storage stability, and the like. Another object of the present invention is to provide a liquid crystal display element which is a composition having characteristics such as appropriate optical anisotropy, appropriate dielectric anisotropy, appropriate clearing point, low viscosity, low threshold voltage, and high low-temperature storage stability, and which has characteristics such as short response time, large contrast ratio, and long life.
Disclosure of Invention
The purpose of the present invention is to provide a liquid crystal composition having characteristics such as a wide nematic phase temperature range, a low viscosity, a low threshold voltage, and high low-temperature storage stability, and a liquid crystal display element including the liquid crystal composition has advantages such as a high response speed and high low-temperature storage stability. The liquid crystal composition has proper optical anisotropy, proper dielectric anisotropy and proper clearing point characteristics, and is suitable for low-temperature environments.
In order to accomplish the above object of the invention, the present invention provides a liquid crystal composition comprising:
at least one compound of the general formula I-1 and/or the general formula I-2
At least one compound of the general formula II
At least one compound of the formula III
And
at least one compound of the general formula IV
Wherein,
R1、R2、R4、R5and R6The same or different, each independently represents an alkyl group or an alkoxy group having 1 to 7 carbon atoms, or an alkenyl group having 2 to 7 carbon atoms;
R3represents an alkyl group or an alkoxy group having 1 to 7 carbon atoms, or an alkenyl group having 2 to 7 carbon atoms;
each independently representOrThe above-mentionedOne or more of H may be substituted by F;
andare the same or different and each independently representsOrThe above-mentionedOne or more of H may be substituted by F;
x represents F or-OCF3；
L1And L2The same or different, each independently represents H or F;
m represents 2, 3 or 4;
n represents 1 or 2;
p represents 0, 1 or 2.
In an embodiment of the present invention, the compound of formula I-1 and/or formula I-2 comprises 1 to 20% by weight of the total liquid crystal composition; the compound of the general formula II accounts for 5-30% of the total weight of the liquid crystal composition; the compound of the general formula III accounts for 15-50% of the total weight of the liquid crystal composition; and the compound of the general formula IV accounts for 25-65% of the total weight of the liquid crystal composition.
In an embodiment of the present invention, preferably said R is1、R2And R4The same or different, each independently represents an alkyl group having 1 to 5 carbon atoms; the R is3Represents an alkyl group having 1 to 5 carbon atoms; the R is5Represents an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms; the R is6Represents an alkyl group or an alkoxy group having 1 to 5 carbon atoms, or an alkenyl group having 2 to 5 carbon atoms.
Preferably, the compound of formula I-1 is selected from one or more compounds of the group consisting of:
and
preferably, the compound of formula I-2 is selected from one or more compounds of the group consisting of:
and
preferably, the compound of formula ii is selected from one or more compounds of the group consisting of:
and
wherein,
R3each independently represents a straight-chain alkyl group having 1 to 5 carbon atoms;
L3represents H or F.
Preferably, the compound of formula iii is selected from one or more compounds of the group consisting of:
and
wherein,
R4each independently represents an alkyl group having 1 to 5 carbon atoms.
Preferably, the compound of formula iv is selected from one or more compounds of the group consisting of:
and
wherein,
R5and R6The alkyl groups may be the same or different and each independently represents an alkyl group having 1 to 5 carbon atoms.
As a particularly preferred embodiment, it is preferred that the compound of the general formula II-1 is one or more compounds selected from the group consisting of:
and
as a particularly preferred embodiment, the compound of the formula II-2 is selected from one or more compounds of the group consisting of:
and
as a particularly preferred embodiment, it is preferred that the compound of the general formula II-3 is selected from one or more compounds of the group consisting of:
and
as a particularly preferred embodiment, it is preferred that the compound of the formula II-4 is selected from one or more compounds of the group consisting of:
and
as a particularly preferred embodiment, it is preferred that the compound of the formula II-5 is selected from one or more compounds of the group consisting of:
and
as a particularly preferred embodiment, it is preferred that the compound of the formula II-6 is selected from one or more compounds of the group consisting of:
and
as a particularly preferred embodiment, it is preferred that the compound of the formula II-9 is selected from one or more compounds of the group consisting of:
and
as a particularly preferred embodiment, it is preferred that the compound of formula II-10 is selected from one or more compounds of the group consisting of:
and
as a particularly preferred embodiment, it is preferred that the compound of the formula II-11 is selected from one or more compounds of the group consisting of:
and
as a particularly preferred embodiment, it is preferred that the compound of the general formula III-1 is selected from one or more compounds of the group consisting of:
and
as a particularly preferred embodiment, it is preferred that the compound of the general formula III-2 is selected from one or more compounds of the group consisting of:
and
as a particularly preferred embodiment, it is preferred that the compound of the general formula III-3 is one or more compounds selected from the group consisting of:
and
as a particularly preferred embodiment, it is preferred that the compound of the general formula III-4 is one or more compounds selected from the group consisting of:
and
as a particularly preferred embodiment, it is preferred that the compound of the formula III-5 is selected from one or more compounds from the group consisting of:
and
as a particularly preferred embodiment, it is preferred that the compound of the formula III-6 is selected from one or more compounds from the group consisting of:
and
as a particularly preferred embodiment, it is preferred that the compound of the formula III-7 is selected from one or more compounds of the group consisting of:
and
as a particularly preferred embodiment, it is preferred that the compound of the formula III-8 is selected from one or more compounds from the group consisting of:
and
as a particularly preferred embodiment, it is preferred that the compound of the formula III-9 is selected from one or more compounds of the group consisting of:
and
as a particularly preferred embodiment, it is preferred that the compound of the formula III-10 is selected from one or more compounds of the group consisting of:
and
as a particularly preferred embodiment, it is preferred that the compound of the formula III-11 is selected from one or more compounds of the group consisting of:
and
as a particularly preferred embodiment, it is preferred that the compound of the general formula IV-1 is one or more compounds selected from the group consisting of:
and
as a particularly preferred embodiment, it is preferred that the compound of the general formula IV-2 is selected from one or more compounds of the group consisting of:
and
as a particularly preferred embodiment, it is preferred that the compound of the general formula IV-3 is one or more compounds selected from the group consisting of:
and
as a particularly preferred embodiment, it is preferred that the compound of the general formula IV-4 is one or more compounds selected from the group consisting of:
and
as a particularly preferred embodiment, it is preferred that the compound of the general formula IV-5 is one or more compounds selected from the group consisting of:
and
as a particularly preferred embodiment, it is preferred that the compound of the general formula IV-6 is one or more compounds selected from the group consisting of:
and
as a particularly preferred embodiment, it is preferred that the compound of the general formula IV-7 is one or more compounds selected from the group consisting of:
and
as a particularly preferred embodiment, it is preferred that the compound of the general formula IV-8 is one or more compounds selected from the group consisting of:
and
as a particularly preferred embodiment, it is preferred that the compound of the formula IV-9 is selected from one or more compounds of the group consisting of:
and
as a particularly preferred embodiment, it is preferred that the compound of formula IV-10 is selected from one or more compounds of the group consisting of:
and
as a particularly preferred embodiment, the compounds of the formula I-1 and/or formula I-2 preferably represent 3 to 15% by weight of the total liquid-crystal composition; the compound of the general formula II accounts for 5-25% of the total weight of the liquid crystal composition; the compound of the general formula III accounts for 20-35% of the total weight of the liquid crystal composition; and the compound of the general formula IV accounts for 35-55% of the total weight of the liquid crystal composition.
Another aspect of the present invention provides a liquid crystal display device comprising the liquid crystal composition of the present invention.
In the present invention, all temperatures are given in degrees Celsius unless otherwise specified, and all percentages are by weight.
Detailed Description
The invention will be illustrated below with reference to specific embodiments. It should be noted that the following examples are illustrative of the present invention, and are not intended to limit the present invention. Other combinations and various modifications within the spirit or scope of the present invention may be made without departing from the spirit or scope of the present invention.
For convenience of expression, in the following examples, the group structure of the liquid crystal composition is represented by the code listed in Table 1:
TABLE 1 radical structural code of liquid crystal compounds
Take the following structure as an example:
it can be represented as 2IPUQUF, 2 in the code represents-C2H5(ii) a I in the code represents indan-2, 5-diyl; p in the code represents 1, 4-phenylene; u in the code represents 2,5 difluoro-1, 4-phenylene, and Q in the code represents difluoromethoxy; wherein F represents a fluorine substituent.
The abbreviated codes of the test items in the following examples are as follows:
cp (. degree. C.): clearing points (nematic-isotropic phase transition temperature)
Δ n: optical anisotropy (589nm, 25 ℃ C.)
Δ ε: dielectric anisotropy (1KHz, 25 ℃ C.)
eta.flow viscosity (mm)2·s-125 ℃ unless otherwise stated)
V10: threshold voltage (characteristic voltage at 10% relative contrast, normally white mode)
t-30℃: low temperature storage time (at-30 ℃ C.)
Wherein the optical anisotropy is measured by an Abbe refractometer under a sodium lamp (589nm) light source at 25 ℃; the dielectric test cell was of the type TN90, the cell thickness being 7 μm.
and the testing condition is that the temperature is 25 ℃, the temperature is 1KHz, the testing box is a TN90 type, and the box thickness is 7 mu m.
The components used in the following examples can be synthesized by a known method or obtained commercially. These synthesis techniques are conventional, and the resulting liquid crystal compounds were tested to meet the standards for electronic compounds.
Liquid crystal compositions were prepared according to the compounding ratios of the liquid crystal compositions specified in the following examples. The liquid crystal composition is prepared according to the conventional method in the field, such as heating, ultrasonic wave, suspension and the like, and is mixed according to the specified proportion.
Comparative example 1
Table 2 shows the components and weight percentages of the components of the liquid crystal composition of comparative example 1, which was filled between two substrates of a liquid crystal display and subjected to a performance test, and the test data are shown in the following table:
TABLE 2 liquid crystal composition formulations and their test properties
Example 1
Table 3 shows the components and weight percentages of the components of the liquid crystal composition of example 1, which was filled between two substrates of a liquid crystal display for performance testing, the test data are shown in the following table:
TABLE 3 formulation of liquid crystal composition and its test properties
Example 2
Table 4 lists the components and weight percentages of the components of the liquid crystal composition of example 2, which was filled between two substrates of a liquid crystal display for performance testing, the test data are shown in the following table:
TABLE 4 liquid crystal composition formulations and their test properties
Example 3
Table 5 shows the components and weight percentages of the components of the liquid crystal composition of example 3, which was filled between two substrates of a liquid crystal display and subjected to a performance test, the test data are shown in the following table:
TABLE 5 liquid crystal composition formulations and their test properties
Example 4
Table 6 lists the components and weight percentages of the components of the liquid crystal composition of example 4, which was filled between two substrates of a liquid crystal display for performance testing, the test data are shown in the following table:
TABLE 6 liquid crystal composition formulations and their test properties
Example 5
Table 7 lists the components and weight percentages of the components of the liquid crystal composition of example 5, which was filled between two substrates of a liquid crystal display for performance testing, the test data are shown in the following table:
TABLE 7 formulation of liquid crystal composition and its test performance
Example 6
Table 8 lists the components and weight percentages of the components of the liquid crystal composition of example 6, which was filled between two substrates of a liquid crystal display for performance testing, the test data are shown in the following table:
TABLE 8 liquid crystal composition formulations and their test properties
Example 7
Table 9 shows the components and weight percentages of the components of the liquid crystal composition of example 7, which was filled between two substrates of a liquid crystal display and subjected to a performance test, the test data are shown in the following table:
TABLE 9 liquid crystal composition formulations and their test properties
Example 8
Table 10 lists the components and weight percentages of the components of the liquid crystal composition of example 8, which was filled between two substrates of a liquid crystal display for performance testing, the test data are shown in the following table:
TABLE 10 formulation of liquid crystal compositions and their test properties
Referring to comparative examples, it can be seen from the test data of the examples provided by the present invention that the liquid crystal composition provided by the present invention has the characteristics of low viscosity, low threshold voltage, high low-temperature storage stability, and the like, can accelerate the response time of the device, and is suitable for use in low-temperature environments.

Claims (13)

1. A liquid crystal composition comprising:
at least one compound of the general formula I-1 and/or the general formula I-2
At least one compound of the general formula II
At least one compound of the formula III
And
at least one compound of the general formula IV
Wherein,
R1、R2、R4、R5and R6The same or different, each independently represents an alkyl group or an alkoxy group having 1 to 7 carbon atoms, or an alkenyl group having 2 to 7 carbon atoms;
R3represents an alkyl group or an alkoxy group having 1 to 7 carbon atoms, or an alkenyl group having 2 to 7 carbon atoms;
each independently represent The above-mentionedOne or more of H may be substituted by F;
are the same or different and each independently represents The above-mentionedOne or more of H may be substituted by F;
x represents F or-OCF3；
L1And L2The same or different, each independently represents H or F;
m represents 2, 3 or 4;
n represents 1 or 2;
p represents 0, 1 or 2;
the compound of the general formula III accounts for 20-50% of the total weight of the liquid crystal composition.
2. The liquid crystal composition of claim 1, wherein the compound of formula i-1 and/or formula i-2 comprises 1 to 20% by weight of the total liquid crystal composition; the compound of the general formula II accounts for 5-30% of the total weight of the liquid crystal composition; and the compound of the general formula IV accounts for 25-65% of the total weight of the liquid crystal composition.
3. The liquid crystal composition of claim 1, wherein R is1、R2And R4The same or different, each independently represents an alkyl group having 1 to 5 carbon atoms; the R is3Represents an alkyl group having 1 to 5 carbon atoms; the R is5Represents an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms; the R is6Represents an alkyl group or an alkoxy group having 1 to 5 carbon atoms, or an alkenyl group having 2 to 5 carbon atoms.
4. The liquid crystal composition of claim 3, wherein the compound of formula I-1 is selected from one or more compounds selected from the group consisting of:
the compound of the general formula I-2 is selected from one or more compounds of the group consisting of:
5. the liquid crystal composition of claim 3, wherein the compound of formula II is selected from one or more compounds selected from the group consisting of:
wherein,
R3each independently represents a straight-chain alkyl group having 1 to 5 carbon atoms;
L3represents H or F.
6. The liquid crystal composition of claim 3, wherein the compound of formula III is selected from one or more compounds of the group consisting of:
wherein,
R4each independently represents an alkyl group having 1 to 5 carbon atoms.
7. The liquid crystal composition of claim 3, wherein the compound of formula IV is selected from one or more compounds of the group consisting of:
wherein,
R5and R6The alkyl groups may be the same or different and each independently represents an alkyl group having 1 to 5 carbon atoms.
8. The liquid crystal composition of claim 5, wherein the compound of formula II-1 is selected from one or more compounds selected from the group consisting of:
the compound of the general formula II-2 is selected from one or more compounds in the group consisting of:
the compound of the general formula II-3 is selected from one or more compounds in the group consisting of:
the compound of the general formula II-4 is selected from one or more compounds in the group consisting of:
the compound of the general formula II-5 is selected from one or more compounds in the group consisting of:
the compound of the general formula II-6 is selected from one or more compounds in the group consisting of:
the compounds of the general formula II-9 are selected from one or more compounds of the group consisting of:
the compounds of the general formulae II to 10 are selected from one or more compounds from the group consisting of:
and is
The compounds of the general formulae II to 11 are selected from one or more compounds from the group consisting of:
9. liquid crystal composition according to claim 6, wherein the compound of formula III-1 is selected from one or more compounds from the group consisting of:
the compound of the general formula III-2 is selected from one or more compounds of the group consisting of:
the compound of the general formula III-3 is selected from one or more compounds of the group consisting of:
the compound of the general formula III-4 is selected from one or more compounds of the group consisting of:
the compound of the general formula III-5 is selected from one or more compounds of the group consisting of:
the compound of the general formula III-6 is selected from one or more compounds of the group consisting of:
the compound of the general formula III-7 is selected from one or more compounds of the group consisting of:
the compound of the general formula III-8 is selected from one or more compounds of the group consisting of:
the compounds of the general formula III-9 are selected from one or more compounds from the group consisting of:
the compounds of the formulae III-10 are selected from one or more compounds from the group consisting of:
and is
The compounds of the general formula III-11 are selected from one or more compounds from the group consisting of:
10. the liquid crystal composition of claim 7, wherein the compound of formula iv-1 is selected from one or more compounds of the group consisting of:
the compound of the general formula IV-2 is selected from one or more compounds in the group consisting of:
the compound of the general formula IV-3 is selected from one or more compounds in the group consisting of:
the compound of the general formula IV-4 is selected from one or more compounds in the group consisting of:
the compound of the general formula IV-5 is selected from one or more compounds in the group consisting of:
the compound of the general formula IV-6 is selected from one or more compounds in the group consisting of:
the compound of the general formula IV-7 is selected from one or more compounds in the group consisting of:
the compound of the general formula IV-8 is selected from one or more compounds in the group consisting of:
the compound of the general formula IV-9 is selected from one or more compounds in the group consisting of:
and is
The compound of the general formula IV-10 is selected from one or more compounds in the group consisting of:
11. liquid crystal composition according to any of claims 2 to 10, wherein the compound of formula i-1 and/or formula i-2 represents 3 to 15% of the total weight of the liquid crystal composition; the compound of the general formula II accounts for 5-25% of the total weight of the liquid crystal composition; the compound of the general formula III accounts for 20-35% of the total weight of the liquid crystal composition; and the compound of the general formula IV accounts for 35-55% of the total weight of the liquid crystal composition.
12. The liquid crystal composition of claim 11, wherein the liquid crystal composition comprises:
a compound IV-10-1 accounting for 2% of the total weight of the liquid crystal composition;
3% of compound III-4-2 by weight of the total liquid crystal composition;
compound III-4-3 accounting for 3 percent of the total weight of the liquid crystal composition;
compound III-3-1 accounting for 5 percent of the total weight of the liquid crystal composition;
compound III-3-2 accounting for 6 percent of the total weight of the liquid crystal composition;
compound III-3-3 accounting for 6 percent of the total weight of the liquid crystal composition;
compound III-3-4 accounting for 6 percent of the total weight of the liquid crystal composition;
a compound IV-2-1 accounting for 30 percent of the total weight of the liquid crystal composition;
a compound IV-3-1 accounting for 11 percent of the total weight of the liquid crystal composition;
compound II-10-4 accounting for 4% of the total weight of the liquid crystal composition;
compound II-10-3 accounting for 4% of the total weight of the liquid crystal composition;
compound II-6-2 accounting for 5 percent of the total weight of the liquid crystal composition;
compound II-9-3 accounting for 4 percent of the total weight of the liquid crystal composition;
compound II-9-4 accounting for 5 percent of the total weight of the liquid crystal composition;
compound II-5-3 accounting for 2% of the total weight of the liquid crystal composition; and
4 percent of compound I-1-2 in percentage by weight of the total weight of the liquid crystal composition,
alternatively, the liquid crystal composition comprises:
a compound IV-10-1 accounting for 2% of the total weight of the liquid crystal composition;
compound III-4-2 accounting for 5 percent of the total weight of the liquid crystal composition;
compound III-3-1 accounting for 5 percent of the total weight of the liquid crystal composition;
compound III-3-2 accounting for 6 percent of the total weight of the liquid crystal composition;
compound III-3-3 accounting for 6 percent of the total weight of the liquid crystal composition;
compound III-3-4 accounting for 6 percent of the total weight of the liquid crystal composition;
a compound IV-2-1 accounting for 30 percent of the total weight of the liquid crystal composition;
a compound IV-3-1 accounting for 11 percent of the total weight of the liquid crystal composition;
compound II-1-2 accounting for 5 percent of the total weight of the liquid crystal composition;
compound II-10-1 accounting for 5 percent of the total weight of the liquid crystal composition;
compound II-11-3 accounting for 6 percent of the total weight of the liquid crystal composition;
compound II-11-4 accounting for 2% of the total weight of the liquid crystal composition;
compound II-4-2 accounting for 2% of the total weight of the liquid crystal composition;
compound I-1-2 accounting for 4% of the total weight of the liquid crystal composition; and
5 percent of compound I-1-3 in percentage by weight of the total weight of the liquid crystal composition,
alternatively, the liquid crystal composition comprises:
compound III-4-2 accounting for 2 percent of the total weight of the liquid crystal composition;
compound III-4-3 accounting for 5 percent of the total weight of the liquid crystal composition;
compound III-3-1 accounting for 5 percent of the total weight of the liquid crystal composition;
compound III-3-2 accounting for 6 percent of the total weight of the liquid crystal composition;
compound III-3-3 accounting for 6 percent of the total weight of the liquid crystal composition;
compound III-3-4 accounting for 6 percent of the total weight of the liquid crystal composition;
a compound IV-2-1 accounting for 30 percent of the total weight of the liquid crystal composition;
a compound IV-3-1 accounting for 11 percent of the total weight of the liquid crystal composition;
compound II-10-4 accounting for 5 percent of the total weight of the liquid crystal composition;
compound II-10-3 accounting for 5 percent of the total weight of the liquid crystal composition;
compound II-9-2 accounting for 6 percent of the total weight of the liquid crystal composition;
compound II-9-3 accounting for 2% of the total weight of the liquid crystal composition;
compound II-9-4 accounting for 2% of the total weight of the liquid crystal composition;
compound I-2-2 accounting for 4% of the total weight of the liquid crystal composition; and
5 percent of compound I-2-1 based on the total weight of the liquid crystal composition,
alternatively, the liquid crystal composition comprises:
compound III-7-1 in an amount of 15% by weight based on the total weight of the liquid crystal composition;
3% of compound III-10-2 by weight of the total liquid crystal composition;
compound III-10-1 accounting for 2 percent of the total weight of the liquid crystal composition;
compound III-10-3 accounting for 2 percent of the total weight of the liquid crystal composition;
compound III-3-2 accounting for 4 percent of the total weight of the liquid crystal composition;
compound III-7-1 accounting for 6 percent of the total weight of the liquid crystal composition;
a compound IV-2-1 accounting for 36 percent of the total weight of the liquid crystal composition;
a compound IV-3-1 accounting for 11 percent of the total weight of the liquid crystal composition;
compound II-4-2 accounting for 4 percent of the total weight of the liquid crystal composition;
compound I-1-2 accounting for 4% of the total weight of the liquid crystal composition;
compound I-1-3 accounting for 6 percent of the total weight of the liquid crystal composition;
5% of compound I-1-4 by weight of the total weight of the liquid crystal composition; and
compound II-5-3 accounting for 2 percent of the total weight of the liquid crystal composition,
alternatively, the liquid crystal composition comprises:
compound III-11-1 accounting for 3 percent of the total weight of the liquid crystal composition;
4% of compound III-4-2 by weight of the total liquid crystal composition;
compound III-3-1 accounting for 6 percent of the total weight of the liquid crystal composition;
7% by weight of compound III-3-2 based on the total weight of the liquid crystal composition;
a compound IV-4-2 accounting for 3 percent of the total weight of the liquid crystal composition;
a compound IV-9-2 accounting for 4 percent of the total weight of the liquid crystal composition;
a compound IV-7-1 accounting for 3 percent of the total weight of the liquid crystal composition;
a compound IV-2-1 accounting for 39% of the total weight of the liquid crystal composition;
a compound IV-5-1 accounting for 3 percent of the total weight of the liquid crystal composition;
compound II-8 accounting for 6 percent of the total weight of the liquid crystal composition;
compound II-10-3 accounting for 6 percent of the total weight of the liquid crystal composition;
compound II-11-2 accounting for 3 percent of the total weight of the liquid crystal composition;
compound II-4-2 accounting for 3 percent of the total weight of the liquid crystal composition;
compound II-5-3 accounting for 4% of the total weight of the liquid crystal composition; and
6 percent of compound I-1-2 based on the total weight of the liquid crystal composition,
alternatively, the liquid crystal composition comprises:
compound III-1-2 accounting for 4 percent of the total weight of the liquid crystal composition;
compound III-2-1 accounting for 5 percent of the total weight of the liquid crystal composition;
7% by weight of compound III-3-2 based on the total weight of the liquid crystal composition;
compound III-3-3 accounting for 6 percent of the total weight of the liquid crystal composition;
a compound IV-7-1 accounting for 4 percent of the total weight of the liquid crystal composition;
a compound IV-2-1 accounting for 37 percent of the total weight of the liquid crystal composition;
compound II-10-4 accounting for 6 percent of the total weight of the liquid crystal composition;
compound II-11-1 accounting for 6 percent of the total weight of the liquid crystal composition;
compound II-6-2 accounting for 3 percent of the total weight of the liquid crystal composition;
compound II-1-2 accounting for 4 percent of the total weight of the liquid crystal composition;
compound II-5-3 accounting for 4% of the total weight of the liquid crystal composition;
compound III-8-1 accounting for 4 percent of the total weight of the liquid crystal composition;
a compound IV-1-1 accounting for 4 percent of the total weight of the liquid crystal composition; and
6 percent of compound I-1-2 based on the total weight of the liquid crystal composition,
alternatively, the liquid crystal composition comprises:
compound III-9-2 accounting for 2 percent of the total weight of the liquid crystal composition;
compound III-6-1 accounting for 4 percent of the total weight of the liquid crystal composition;
4% of compound III-4-2 by weight of the total liquid crystal composition;
7% by weight of compound III-3-1 based on the total weight of the liquid crystal composition;
7% by weight of compound III-3-2 based on the total weight of the liquid crystal composition;
a compound IV-6-2 accounting for 5 percent of the total weight of the liquid crystal composition;
a compound IV-8-2 accounting for 5 percent of the total weight of the liquid crystal composition;
a compound IV-2-1 accounting for 30 percent of the total weight of the liquid crystal composition;
a compound IV-3-1 accounting for 9 percent of the total weight of the liquid crystal composition;
compound II-10-3 accounting for 3% of the total weight of the liquid crystal composition;
compound II-10-4 accounting for 5 percent of the total weight of the liquid crystal composition;
compound II-9-2 accounting for 5 percent of the total weight of the liquid crystal composition;
compound II-9-3 accounting for 5 percent of the total weight of the liquid crystal composition;
compound II-7 accounting for 6 percent of the total weight of the liquid crystal composition; and
3 percent of compound I-1-2 in percentage by weight of the total weight of the liquid crystal composition,
alternatively, the liquid crystal composition comprises:
5 percent of compound III-5-2 accounting for the total weight of the liquid crystal composition;
compound III-4-2 accounting for 5 percent of the total weight of the liquid crystal composition;
compound III-3-1 accounting for 6 percent of the total weight of the liquid crystal composition;
compound III-3-2 accounting for 6 percent of the total weight of the liquid crystal composition;
compound III-3-3 accounting for 6 percent of the total weight of the liquid crystal composition;
compound III-3-4 accounting for 6 percent of the total weight of the liquid crystal composition;
a compound IV-2-1 accounting for 34 percent of the total weight of the liquid crystal composition;
a compound IV-3-1 accounting for 4 percent of the total weight of the liquid crystal composition;
compound II-4-2 accounting for 2% of the total weight of the liquid crystal composition;
compound II-4-1 accounting for 3 percent of the total weight of the liquid crystal composition;
compound II-9-2 accounting for 5 percent of the total weight of the liquid crystal composition;
compound II-2-2 accounting for 6 percent of the total weight of the liquid crystal composition;
compound II-3-1 accounting for 6 percent of the total weight of the liquid crystal composition;
3% of compound I-2-2 by weight of the total weight of the liquid crystal composition; and
and 3% of compound I-2-1 by weight of the total weight of the liquid crystal composition.
13. A liquid crystal display device comprising the liquid crystal composition according to any one of claims 1 to 12.
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