CN106635059B

CN106635059B - With big optically anisotropic fast response liquid crystal composition and its application

Info

Publication number: CN106635059B
Application number: CN201510740216.6A
Authority: CN
Inventors: 陈卯先; 陈海光; 姜天孟; 储士红; 董焕章; 张嫣然; 王杰; 谭小玉; 田会强; 苏学辉
Original assignee: Beijing Bayi Space LCD Technology Co Ltd
Current assignee: Beijing Bayi Space LCD Technology Co Ltd
Priority date: 2015-11-03
Filing date: 2015-11-03
Publication date: 2019-04-16
Anticipated expiration: 2035-11-03
Also published as: CN106635059A

Abstract

It the invention belongs to liquid crystal material field, proposes a kind of with big optically anisotropic fast response liquid crystal composition, consists of the following components in percentage by weight: 1) compound representated by 1%~20% one or more logical formula (I)s；2) compound representated by 1%~40% one or more logical formula (II)s；3) compound representated by 20%~70% one or more logical formula (III)s；4) compound representated by 1%~30% one or more logical formula (IV)s or logical formula (V)；5) compound representated by 0%~30% one or more logical formula (VI)s；6) compound representated by 0%~30% one or more logical formula (VII)s.Liquid-crystal composition proposed by the present invention has low viscosity, high resistivity, good low temperature intersolubility and fast response speed, it can be used for the fast-response liquid crystal display of plurality of display modes, its use in TN, IPS or FFS mode display can be obviously improved liquid crystal display display effect, be particularly suitable for IPS/FFS type TV liquid crystal display.

Description

With big optically anisotropic fast response liquid crystal composition and its application

Technical field

The invention belongs to liquid crystal material fields, and in particular to a kind of includes the liquid-crystal compounds group of hetero atom substituted benzene ring Close object and its application.

Background technique

Currently, liquid crystal is used widely in field of information display, while the application in optical communication also achieves centainly Progress (S.T.Wu, D.K.Yang.Reflective Liquid Crystal Displays.Wiley, 2001).In recent years, The application field of liquid-crystal compounds significantly widens kinds of displays part, electro-optical device, electronic component, sensor etc..For This, it has been suggested that many different structures, especially in nematic crystal field, nematic liquid crystal compound is so far flat Most commonly used application is obtained in plate display.Especially in the system of tft active matrix.

Liquid crystal display experienced very long road for development with the discovery of liquid crystal.Austrian botanist in 1888 Friedrich Reinitzer has found the first liquid crystal material benzoic acid cholesterol (cholesteryl benzoate). Manguin has invented rubbing within 1917, to make single domain liquid crystal and research optical anisotropy.E.Bose in 1909 Moving (Swarm) theory is established, and (1918) are supported in the experiment for obtaining L.S.Ormstein and F.Zernike et al., after Statistical fluctuation is discussed as through De Gennes.G.W.Oseen and H.Zocher1933 foundes continuum theory, and obtains F.C.Frank perfect (1958).M.Born (1916) and K.Lichtennecker (nineteen twenty-six) has found and has studied liquid crystal Dielectric anisotropy.1932, nematic phase was divided into positive and negative property two major classes accordingly by W.Kast.Nineteen twenty-seven, For V.Freedericksz and V.Zolinao discovery nematic liquid crystal under electric field (or magnetic field) effect, deformation occurs and there is electricity It presses threshold value (Freederichsz transformation).This production for being found to be liquid crystal display provides foundation.

Nineteen sixty-eight RCA Corp., U.S. R.Williams discovery nematic liquid crystal forms striped farmland under electric field action, and has Light scattering phenomenon.With dynamic scattering display pattern is developed into and first liquid crystal in the world is made in G.H.Heilmeir Display (LCD).Early seventies, Helfrich and Schadt have invented TN principle, and people are using TN photoelectric effect and integrate Circuit combines, and is made into display device (TN-LCD), has opened up wide prospect for the application of liquid crystal.The seventies with Come, due to the development of large scale integrated circuit and liquid crystal material, application of the liquid crystal in terms of display achieves breakthrough development, 1983~1985 years T.Scheffer et al. successively propose super-twist nematic (Super Twisred Nematic:STN) mode And active matrix (Active matrix:AM) mode that P.Brody was proposed in 1972 is used again.Traditional TN- LCD technology has developed into STN-LCD and TFT-LCD technology, although the number of scanning lines of STN up to 768 rows more than, work as temperature The problems such as response speed, visual angle and gray scale are remained when raising, therefore large area, high information quantity, colored display are mostly Using Active Matrix LCD At mode.TFT-LCD is widely used for direct viewing type TV, large-curtain projecting TV set, terminal Display and certain military instrument are shown, it is believed that TFT-LCD technology has more extensive application prospect.

Wherein " active matrix " includes two types: 1, the OMS on the silicon wafer as substrate (partly lead by metal oxide Body) or other diodes.2, the thin film transistor (TFT) on the glass plate as substrate (TFT).

Monocrystalline silicon limits display size as substrate material, because each section display device even module assembled is in its knot Occur many problems at conjunction.Thus, second of thin film transistor (TFT) is the promising active matrix type of tool, the photoelectricity effect utilized It should be usually TN effect.TFT includes compound semiconductor, such as Cdse, or the TFT based on polycrystalline or amorphous silicon.

Currently, LCD product technology is mature, the technologies such as visual angle, resolution ratio, color saturation and brightness are successfully solved Problem, display performance already close to or be more than CRT monitor.Based on TV market is mainly shown with LCD at present, point is used Requirement of the LCD for the response time is more harsh, especially 3D technology be applied to tv product in, it is desirable that response time more Harshness, response time will lead to the hangover of 3D display picture and distortion slowly, influence to watch.Liquid crystal is relied primarily under electric field action Molecular structure occurs to reset and reach the mechanism that control light passes through, and occurring will necessarily be by itself and external resistance in rearrangement process Influence, maximum resistance is derived from the viscosity resistance of liquid crystal, and liquid crystal display is limited to the rotary viscosity problem of itself, causes to ring Become the biggest problem of TV liquid crystal display between seasonable.

Specifically, the response time of liquid crystalWherein, γ 1 represents rotary viscosity, K_effRepresent effective elasticity Constant value, d represent thickness of liquid crystal layer.It is highly effective for the promotion liquid crystal response time to reduce thickness of liquid crystal layer, the thickness of liquid crystal layer Degree d=K/ △ n, △ n is optical anisotropy, and K is retardation definite value, so increasing optical anisotropy for reducing liquid crystal layer Thickness, and then it is highly effective to improve the response time；It reduces γ 1 and promotes K_effAlso there is important work for promoting the response time With

Summary of the invention

Place in view of the shortcomings of the prior art, the purpose of the present invention is to provide a kind of liquid-crystal compositions, to be promoted The response speed of liquid crystal display, specifically, liquid crystal display provided by the present invention promote the optical anisotropy of liquid crystal It to reduce thickness of liquid crystal layer, while reducing the rotary viscosity of liquid crystal and promoting elastic constant, to realize the liquid crystal of quick response Composition, and then obtain the liquid crystal display of quick response.

Another object of the present invention is to propose the application of liquid-crystal composition.

Realize the technical solution of above-mentioned purpose of the present invention are as follows:

It is a kind of with big optically anisotropic fast response liquid crystal composition, by following components in percentage by weight group At:

1) compound representated by 1%~20% one or more logical formula (I)s；

2) compound representated by 1%~40% one or more logical formula (II)s；

3) compound representated by 20%~70% one or more logical formula (III)s；

4) compound representated by 1%~30% one or more logical formula (IV)s or logical formula (V)；

5), compound representated by 0%~30% one or more logical formula (VI)s；

6), compound representated by 0%~30% one or more logical formula (VII)s；

The logical formula (I) is to (VII) are as follows:

Wherein: R₁Represent C₁~C₁₂Straight chained alkyl or C₂~C₁₂Straight-chain alkenyl；

A₁、A₂And A₃It is each independently selected from:

One of；N=0 or 1；

Wherein, R₂Represent C₁~C₁₂Straight chained alkyl, C₁~C₁₂Unbranched alkoxy or C₂~C₁₂Straight-chain alkenyl in It is a kind of；

Wherein, R₃、R₄It is each independently C₁~C₁₂Straight chained alkyl, wherein one or more non-conterminous CH₂It can be by O, S or CH=CH replaces；

A₄、A₅It is independently represented each other trans- 1,4- cyclohexyl or 1,4- phenylene；

Wherein, R₅Represent C₁~C₁₂Straight chained alkyl, C₁~C₁₂Unbranched alkoxy or C₂~C₁₂Straight-chain alkenyl in It is a kind of；R₆、R₇It is independently represented each other C₁~C₁₂Straight chained alkyl；Z₁、Z₂Represent singly-bound or acetylene bond, and Z₁And Z₂In at least one For acetylene bond；M=0 or 1；

A₆It represents

One of；

Compound representated by general formula I provided by the invention is to contain 2- methyl -3,4,5- trifluoro-benzene structure and difluoro first The polar compound of oxygroup bridged bond, the structure have big dielectric anisotropy.

Wherein, R₈、R₉It is each independently selected from C₁~C₁₂Straight chained alkyl, wherein one or more non-conterminous CH₂It can be with Replaced by O, S or CH=CH；

A₇Selected from one of flowering structure:

Wherein, R₁₀Represent C₁~C₁₂Straight chained alkyl, X₁Represent F, CF₃、OCF₃One of.

Further, compound representated by general formula I is selected from one of compound representated by Formulas I-A~Formulas I-U or several Kind:

Wherein, R₁₁Represent C₁~C₇Straight chained alkyl；

Compound representated by the general formula II is selected from one of Formula II-A~Formula II-C or a variety of:

Wherein R₂₂Represent C₁~C₇Straight chained alkyl.

Compound representated by general formula III provided by the invention is twin nuclei, specifically, representated by the general formula III Compound be selected from following compound it is one or more:

Wherein, R₃₃Represent C₁~C₇Straight chained alkyl；R₄₄Represent C₁~C₇Straight chained alkyl, unbranched alkoxy or C₂~C₇ One of straight-chain alkenyl；Compound of Formula IV is selected from one of formula IV-A~formula IV-C or a variety of:

Wherein, R₅₅Represent C₁~C₇Straight chained alkyl；Compound representated by the general formula V is in Formula V-A~Formula V-C It is one or more:

Wherein, R₆₆、R₇₇It is independently represented each other C₁~C₇Straight chained alkyl.

Preferably, the fast response liquid crystal composition, consists of the following compositions:

1), compound representated by 2%~16% one or more logical formula (I)s；

2), compound representated by 11%~24% one or more logical formula (II)s；

3), compound representated by 50%~65% one or more logical formula (III)s；

4), compound representated by 4%~12% one or more logical formula (IV)s or logical formula (V)；

5), compound representated by 0%~19% one or more logical formula (VI)s；

6), compound representated by 0%~8% one or more logical formula (VII)s.

Further, compound representated by general formula VI is selected from Formula IV-A~Formula IV-C following compound one kind or more Kind:

Wherein, R₈₈Represent C₂~C₁₀Straight chained alkyl or straight-chain alkenyl；R₉₉Represent C₁~C₈Straight chained alkyl.

Compounds of formula VII is selected from one of Formula VII-A~Formula VII-C or a variety of:

Wherein, R₁₀₀Represent C₁~C₇Straight chained alkyl.

Preferably, the liquid-crystal composition consists of the following components in percentage by weight:

1), compound representated by 3%~16% one or more logical formula (I)s；

2), compound representated by 11%~23% one or more logical formula (II)s；

3), compound representated by 54%~62% two kinds of formula above (III), wherein there is 40%~53% general formula III-A compound；

4), compound representated by 4%~12% one or more logical formula (V)s；

5), compound representated by 0%~17% one or more logical formula (VI)s；

6), compound representated by 0%~8% one or more logical formula (VII)s.

Or

1), compound representated by 2%~13% one or more logical formula (I)s；

2), compound representated by 11%~24% one or more logical formula (II)s；

3), compound representated by 53%~59% two kinds of formula above (III), wherein there is 40%~53% general formula III-A compound；

4), compound representated by 4%~6% one or more logical formula (IV)s；

5), compound representated by 9%~19% one or more logical formula (VI)s；

6), compound representated by 0%~8% one or more logical formula (VII)s.

Logical formula (III) compound amount is larger, is combined with to be conducive to improve with two kinds of formula above (III) compounds and be dissolved each other Property, it will not precipitate crystal.

Further, compound representated by general formula I is selected from one of compound representated by Formulas I-A-1~Formulas I-U-4 Kind is several:

Compound representated by general formula II is selected from one of Formula II-A-1~Formula II-C-1 or a variety of:

Two kinds in the compound representated by formula III-A-1~formula III-C-24 of compound representated by general formula III More than:

Compound representated by general formula IV is selected from one of formula IV-A-1~formula IV-C-1 or a variety of:

Compound representated by general formula V is selected from one of Formula V-A-1~Formula V-C-16 or a variety of:

Wherein, compound representated by general formula VI is selected from one of Formula IV-A-1~Formula IV-C-30 or a variety of:

Compounds of formula VII is selected from one of Formula VII-A-1~Formula VII-C-4 or a variety of:

It is highly preferred that the liquid-crystal composition consists of the following components in percentage by weight:

1), compound representated by 3%~5% one or more logical formula (I)s；

2), compound representated by 18%~23% one or more logical formula (II)s；

3), compound representated by 55%~62% two kinds of formula above (III)；

4), compound representated by 4%~12% one or more logical formula (V)s；

5), compound representated by 7%~16% one or more logical formula (VI)s；

Or

1), compound representated by 2%~4% one or more logical formula (I)s；

2), compound representated by 19%~24% one or more logical formula (II)s；

3), compound representated by 53%~59% two kinds of formula above (III)；

4), compound representated by 4%~5% one or more logical formula (IV)s；

5), compound representated by 11%~19% one or more logical formula (VI)s.

Liquid-crystal composition of the present invention is preparing one of liquid crystal display device, the display of the liquid crystal display device Mode is one of TN, IPS, FFS.

The beneficial effects of the present invention are:

Since compound I has strong dielectric anisotropy, II class compound has big optical anisotropy, general formula Group III compound has low rotary viscosity, and general formula IV and V class compound has big optical anisotropy, passes through II class, IV Class, V class compound promote the optical anisotropy of liquid-crystal composition, and increasing Group III compound reduces rotary viscosity, are realized with this Big optical anisotropy and low rotary viscosity, realize the purpose of quick response.

The preparation method of liquid-crystal composition of the present invention can be used conventional method and change two or more without specifically limited It closes object mixing to be produced, such as the method preparation by mixing different component at high temperature and being soluble in one another, wherein by liquid crystal group It closes object to dissolve in solvent in the solvent used for the compound and mix, then distills out the solvent under reduced pressure；Or it is of the present invention Liquid-crystal composition can be prepared conventionally, such as wherein the lesser component of content will be dissolved in content at a higher temperature In biggish main component, or each affiliated component dissolved in organic solvent, such as acetone, chloroform or methanol, it then will be molten It is obtained after liquid mixing removal solvent.

Liquid-crystal composition proposed by the present invention has low viscosity, high resistivity, good low temperature intersolubility and fast sound Speed is answered, can be used for the fast-response liquid crystal display of plurality of display modes, uses energy in TN, IPS or FFS mode display It is obviously improved liquid crystal display display effect, is particularly suitable for IPS/FFS type TV (TV) liquid crystal display.

Specific embodiment

The present invention is now illustrated with following most preferred embodiment, but is not intended to limit the scope of the invention.In embodiment, such as nothing Specified otherwise, used device and method are the device and method of fields routine.

Unless otherwise indicated, percentage is weight percentage in the present invention；Temperature unit is degree Celsius；△ n represents optics Anisotropy (25 DEG C, 589nm)；△ ε represents dielectric anisotropy (25 DEG C, 1000Hz)；V10 represents threshold voltage, is in phase Character voltage (V, 25 DEG C) when to transmitance change 10%；γ 1 represents rotary viscosity (mPa.s, 25 DEG C)；Cp represents liquid crystal group Close the clearing point (DEG C) of object；K11, K22, K33 respectively represent splay, distortion and bend elastic constant (pN, 25 DEG C).

In following embodiment, unit structure code shown in table 1 is indicated in liquid-crystal compounds.

Table 1: the group structure code of liquid-crystal compounds

By taking following compound structure as an example:

It indicates are as follows: 4CDUQKF

It indicates are as follows: 5CCPUF

In following embodiment, the preparation of liquid-crystal composition is all made of heat of solution method, comprising the following steps: is pressed with balance Weight percent weighs liquid-crystal compounds, wherein weighing addition sequence without particular requirement, usually with liquid-crystal compounds fusing point by height Mixing is successively weighed to low sequence, heating stirring melts each component uniformly at 60~100 DEG C, using filter, rotate, It finally encapsulates up to target sample.

In following embodiment, the performance parameter of the weight percent of each component when liquid-crystal composition is shown in liquid-crystal composition Table 2-18.

Embodiment 1

Table 2: the weight percent of each component when performance parameter in liquid-crystal composition

Embodiment 2

Table 3: the weight percent of each component when performance parameter in liquid-crystal composition

Embodiment 3

Table 4: the weight percent of each component when performance parameter in liquid-crystal composition

Embodiment 4

Table 5: the weight percent of each component when performance parameter in liquid-crystal composition

Embodiment 5

Table 6: the weight percent of each component when performance parameter in liquid-crystal composition

Embodiment 6

Table 7: the weight percent of each component when performance parameter in liquid-crystal composition

Embodiment 7

Table 8: the weight percent of each component when performance parameter in liquid-crystal composition

Embodiment 8

Table 9: the weight percent of each component when performance parameter in liquid-crystal composition

Embodiment 9

Table 10: the weight percent of each component when performance parameter in liquid-crystal composition

Embodiment 10

Table 11: the weight percent of each component when performance parameter in liquid-crystal composition

Embodiment 11

Table 12: the weight percent of each component when performance parameter in liquid-crystal composition

Embodiment 12

Table 13: the weight percent of each component when performance parameter in liquid-crystal composition

Embodiment 13

Table 14: the weight percent of each component when performance parameter in liquid-crystal composition

Embodiment 14

Table 15: the weight percent of each component when performance parameter in liquid-crystal composition

Embodiment 15

Table 16: the weight percent of each component when performance parameter in liquid-crystal composition

Embodiment 16

Table 17: the weight percent of each component when performance parameter in liquid-crystal composition

Comparative example 1

Table 18: the weight percent of each component when performance parameter in liquid-crystal composition

Compared with embodiment 14 is summarized with each performance parameter value of 1 gained liquid-crystal composition of comparative example, referring to table 19.

Table 19: the performance parameter of liquid-crystal composition compares

	△n	△ε	Cp	γ1	K₁₁	K₂₂	K₃₃
								Embodiment 14	0.121	+2.6	81	50	13.8	6.9	15.9
Comparative example 1	0.098	+2.6	81	52	13.8	6.9	16.0

Known to relatively: compared with comparative example 1, the liquid-crystal composition that embodiment 14 provides has big optics respectively to different Property, can arrange in pairs or groups lower thickness of liquid crystal layer, the fast response time be obtained with this, in addition, embodiment 14 has more than comparative example Low rotary viscosity, so with faster response time.So embodiment 14 has faster response speed.

As seen from the above embodiment, liquid-crystal composition provided by the present invention has low viscosity, high resistivity, big optics Anisotropy and excellent photostability and thermal stability can solve the response time for reducing liquid crystal display, to solve liquid The slow problem of crystal display response speed.In addition, the liquid-crystal composition can effectively improve pair of IPS and FFS liquid crystal display Than degree characteristic.Therefore, liquid-crystal composition provided by the present invention is suitable for TN, IPS and FFS type TFT liquid crystal display of fast-response Device is particularly suitable for IPS and FFS liquid crystal display device, especially suitable for IPS and FFS mode TV liquid crystal display.

Above embodiment be only preferred embodiments of the present invention will be described, not to the scope of the present invention into Row limits, and without departing from the spirit of the design of the present invention, this field ordinary engineering and technical personnel is to technical side of the invention The all variations and modifications that case is made, should fall within the scope of protection determined by the claims of the present invention.

Claims

1. a fast-response liquid crystal composition with large optical anisotropy is characterized in that, is made up of the following components by weight:

1), 2% to 16% of one or more compounds represented by the general formula (I);

2), 11% to 24% of one or more compounds represented by general formula (II);

3), 50% to 65% of one or more compounds represented by general formula (III);

4), 4% to 12% of one or more compounds represented by general formula (IV) or general formula (V);

5), 0% to 19% of one or more compounds represented by general formula (VI);

6), 0% to 8% of one or more compounds represented by the general formula (VII);

The general formulae (I) to (VII) are:

Wherein: R ₁ represents a straight-chain alkyl group of C ₁ -C ₁₂ or a straight-chain alkenyl group of C ₂ -C ₁₂ ;

A ₁ , A ₂ and A ₃ are each independently selected from:

One of; n=0 or 1;

Wherein, R ₂ represents one of C ₁ -C ₁₂ straight-chain alkyl, C ₁ -C ₁₂ straight-chain alkoxy or C ₂ -C ₁₂ straight-chain alkenyl;

Wherein, R ₃ and R ₄ are each independently a straight-chain alkyl group of C ₁ -C ₁₂ , wherein one or more non-adjacent CH ₂ may be substituted by O, S or CH=CH;

A ₄ and A ₅ each independently represent trans-1,4-cyclohexyl or 1,4-phenylene;

Wherein, R ₅ represents one of C ₁ -C ₁₂ straight-chain alkyl, C ₁ -C ₁₂ straight-chain alkoxy or C ₂ -C ₁₂ straight-chain alkenyl; R ₆ and R ₇ are each independently Ground represents a C ₁ -C ₁₂ straight-chain alkyl group; Z ₁ and Z ₂ represent a single bond or an alkyne bond, and at least one of Z ₁ and Z ₂ is an alkyne bond; m=0 or 1;

A ₆ stands for

one of the

Wherein, R ₈ and R ₉ are each independently selected from C ₁ -C ₁₂ straight-chain alkyl groups, wherein one or more non-adjacent CH ₂ can be substituted by O, S or CH=CH;

A ₇ is selected from one of the following structures:

Wherein, R ₁₀ represents a C ₁ -C ₁₂ straight-chain alkyl group, and X ₁ represents one of F, CF ₃ and OCF ₃ .

2. The fast-response liquid crystal composition according to claim 1, wherein the compound represented by the general formula I is selected from one or more of the compounds represented by the formula I-A to the formula I-U:

Wherein, R ₁₁ represents a straight-chain alkyl group of C ₁ to C ₇ ;

The compound represented by the general formula II is selected from one or more of formula II-A to formula II-C:

wherein R ₂₂ represents a C ₁ -C ₇ straight-chain alkyl group.

3. The fast-response liquid crystal composition according to claim 1, wherein the compound represented by the general formula III is selected from one or more of the following compounds:

Wherein, R ₃₃ represents a C ₁ -C ₇ straight-chain alkyl group; R ₄₄ represents one of a C ₁ -C ₇ straight-chain alkyl group, a straight-chain alkoxy group or a C ₂ -C ₇ straight-chain alkenyl group ;

The compound represented by the general formula IV is selected from one or more of formula IV-A to formula IV-C:

Wherein, R ₅₅ represents a straight-chain alkyl group of C ₁ to C ₇ ;

The compound represented by the general formula V is selected from one or more of the formulas V-A to V-C:

Wherein, R ₆₆ and R ₇₇ each independently represent a C ₁ -C ₇ straight-chain alkyl group.

4. The fast-response liquid crystal composition according to claim 1, wherein the compound represented by general formula VI is selected from one or more of the following compounds of formula VI-A to formula VI-C:

Wherein, R ₈₈ represents a straight-chain alkyl or straight-chain alkenyl of C ₂ -C ₁₀ ; R ₉₉ represents a straight-chain alkyl of C ₁ -C ₈ ;

The compound of general formula VII is selected from one or more of formulas VII-A to VII-C:

wherein, R ₁₀₀ represents a C ₁ -C ₇ straight-chain alkyl group.

5. The fast-response liquid crystal composition according to any one of claims 1 to 4, wherein the liquid crystal composition provided by the present invention comprises the following components by weight:

1), 3% to 16% of one or more compounds represented by the general formula (I);

2), 11% to 23% of one or more compounds represented by the general formula (II);

3) 54% to 62% of two or more compounds represented by general formula (III), among which 40% to 53% of compounds of general formula III-A;

4), 4% to 12% of one or more compounds represented by the general formula (V);

5), 0%～17% of one or more compounds represented by general formula (VI);

6), 0% to 8% of one or more compounds represented by the general formula (VII);

or

1), 2% to 13% of one or more compounds represented by the general formula (I);

2), 11% to 24% of one or more compounds represented by general formula (II);

3) 53% to 59% of two or more compounds represented by general formula (III), among which 40% to 53% of compounds of general formula III-A;

4), 4% to 6% of one or more compounds represented by the general formula (IV);

5), 9%～19% of one or more compounds represented by general formula (VI);

6), 0% to 8% of one or more compounds represented by the general formula (VII).

6. The fast-response liquid crystal composition according to any one of claims 1 to 4, characterized in that,

The compound represented by the general formula I is selected from one or more of the compounds represented by the formula I-A-1 to the formula I-U-4:

The compound represented by general formula II is selected from one or more of formula II-A-1 to formula II-C-1:

The compound represented by the general formula III is selected from two or more of the compounds represented by the formula III-A-1 to the formula III-C-24:

The compound represented by general formula IV is selected from one or more of formula IV-A-1 to formula IV-C-1:

The compound represented by the general formula V is selected from one or more of the formulas V-A-1 to V-C-16:

7. The fast-response liquid crystal composition according to any one of claims 1 to 4, wherein the compound represented by the general formula VI is selected from one of the structures of formula VI-A-1 to formula VI-C-30 or Various:

The compound of general formula VII is selected from one or more of formulae VII-A-1 to VII-C-4:

8. The fast-response liquid crystal composition according to any one of claims 1 to 4, wherein the provided liquid crystal composition comprises the following components by weight:

1), 3% to 5% of one or more compounds represented by the general formula (I);

2), 18%～23% of one or more compounds represented by general formula (II);

3), 55% to 62% of two or more compounds represented by the general formula (III);

4), 4% to 12% of one or more compounds represented by the general formula (V);

5), 7%～16% of one or more compounds represented by general formula (VI);

or

1), 2% to 4% of one or more compounds represented by the general formula (I);

2), 19% to 24% of one or more compounds represented by the general formula (II);

3), 53% to 59% of two or more compounds represented by the general formula (III);

4), 4% to 5% of one or more compounds represented by the general formula (IV);

5), 11% to 19% of one or more compounds represented by the general formula (VI).

9 . The application of the liquid crystal composition according to any one of claims 1 to 8 in preparing a liquid crystal display device, wherein the display mode of the liquid crystal display device is one of TN, IPS, and FFS. 10 .