CN103740377B - Liquid crystal composition and application thereof - Google Patents

Liquid crystal composition and application thereof Download PDF

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CN103740377B
CN103740377B CN201310741060.4A CN201310741060A CN103740377B CN 103740377 B CN103740377 B CN 103740377B CN 201310741060 A CN201310741060 A CN 201310741060A CN 103740377 B CN103740377 B CN 103740377B
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liquid
crystal composition
chained alkyl
compound
straight chained
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CN201310741060.4A
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CN103740377A (en
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陈海光
陈卯先
杭德余
姜天孟
田会强
储士红
贺树芳
孙丽丽
张琳
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北京八亿时空液晶科技股份有限公司
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Abstract

The invention provides a liquid crystal composition which comprises the following components: 5-40% of one or more compounds shown by the general formula (I), 1-30% of one or more compounds shown by the general formula (II), 10-60% of one or more compounds shown by the general formula (III), 0-80% of one or more compounds shown by the general formula (IV) or (V) and 0-35% of one or more compounds shown by the general formula (VI) or (VII). The liquid crystal composition provided by the invention has the advantages of low viscosity, high resistivity, good low-temperature intersolubility, fast response and excellent transmittance feature, and can be applied to fast-response liquid crystal display of multiple display modes. By adopting the liquid crystal composition to a display of TN, IPS or FFS mode, the display effect of the liquid crystal display can be obviously improved; and the liquid crystal composition is particularly applicable to the FFS display mode and can effectively improve the transmittance feature of an FFS liquid crystal display.

Description

A kind of liquid-crystal composition and application thereof

Technical field

The invention belongs to liquid crystal material field, be specifically related to a kind of liquid-crystal composition and the application in TN, IPS or FFS mode indicating meter thereof.

Background technology

At present, liquid crystal is used widely in areas of information technology, and the application simultaneously in optical communication also makes some progress (S.T.Wu, D.K.Yang.Reflective Liquid Crystal Displays.Wiley, 2001).In recent years, the Application Areas of liquid crystalline cpd significantly widened kinds of displays part, electro-optical device, electronic component, sensor.For this reason, proposed many different structures, particularly in nematic liquid crystal field, nematic liquid crystal compound has obtained applying the most widely so far in flat-panel monitor.Especially in the system of tft active matrix.

Liquid-crystal display experienced by very long road for development with the discovery of liquid crystal.Within 1888, Austrian botanist Friedrich Reinitzer has found the first liquid crystal material M-nitro benzoic acid cholesterol (cholesteryl benzoate).Within 1917, Manguin has invented rubbing, in order to make single domain liquid crystal and Optical anisotropy.E.Bose in 1909 establishes and collects together (Swarm) theory, and obtains the experiment support (1918) of the people such as L.S.Ormstein and F.Zernike, is discussed as statistical fluctuation by 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) finds and have studied the dielectric anisotropy of liquid crystal.1932, nematic phase was divided into the large class of positive and negative property two by W.Kast accordingly.Nineteen twenty-seven, V.Freedericksz and V.Zolinao finds that nematic liquid crystal is under electric field (or magnetic field) effect, deformation occurs and there is voltage threshold (Freederichsz transformation).This making being found to be liquid-crystal display provides foundation.

Nineteen sixty-eight RCA Corp. of U.S. R.Williams finds that nematic liquid crystal forms striped farmland under electric field action, and has light scattering phenomenon.G.H.Heilmeir develops into dynamic scattering display format with by it, and makes first liquid-crystal display (LCD) in the world.Early seventies, Helfrich and Schadt has invented TN principle, and people utilize TN photovoltaic effect and unicircuit to combine, and is made display device (TN-LCD), and wide prospect has been opened up in the application for liquid crystal.Since the seventies, due to the development of large-scale integrated circuit and liquid crystal material, the people such as the application of liquid crystal in display achieves breakthrough development, 1983 ~ 1985 years T.Scheffer successively propose super-twist nematic (Super Twisred Nematic:STN) pattern and P.Brody is adopted again in active matrix (Active matrix:AM) mode that 1972 propose.Traditional TN-LCD technology has developed into STN-LCD and TFT-LCD technology, although the number of scanning lines of STN can reach more than 768 row, but still there is the problems such as response speed, visual angle and gray scale when the temperature increases, therefore big area, high information quantity, colored display adopt Active Matrix LCD At mode mostly.TFT-LCD has been widely used in direct viewing type TV, large-curtain projecting TV set, terminal display and some military instrument display, believes that TFT-LCD technology has more wide application prospect.

Wherein " active matrix " comprises two types: 1, as the OMS (metal-oxide semiconductor (MOS)) on the silicon wafer of substrate or other diode.2, as the thin film transistor (TFT) on the sheet glass of substrate.

Silicon single crystal limits display size as substrate material because each several part display device even module assembled there is many problems in its junction.Thus, the second thin film transistor is the promising active matrix type of tool, and the photovoltaic effect utilized is TN effect normally.TFT comprises compound semiconductor, as Cdse, or the TFT based on polycrystalline or amorphous silicon.

At present, for for the small size of dull and stereotyped and smart mobile phone indicating meter and middle display of size, face internal conversion (IPS) and fringing field switching (FFS) pattern are very interesting.The reason that IPS and FFS mode are widely used in intelligence and middle display of size is wide viewing angle, and relative to the low operating parameter knowing pattern in prior art, relative to IPS pattern, FFS has higher transmissivity.Liquid crystal compound of the prior art is characterised in that it is made up of the compound and optional neutral compound with positive dielectric anisotropy.

In a liquid crystal display, the medium of the following advantage helped in box is expected to have:

1, wide nematic phase range (particularly downwards until low temperature)

2, the ability (outdoor application, automobile, avionics) switched under the low temperature of pole

3, the tolerance to uv-radiation (longer service life) improved

4, low threshold voltage (saving electric energy)

5, high-transmission rate.

The major function of liquid-crystal display plays a part photoswitch, and light light loss after liquid crystal layer, to only having original about 10%, so will obtain brighter display effect, must increase backlight illumination, and this will increase the energy consumption of backlight and reduce the backlight life-span.Another approach is the liquid-crystal display obtaining high transmissivity, and liquid-crystal composition provided by the present invention is conducive to the transmissivity improving liquid-crystal display.

Have been found that at present, if liquid-crystal composition also comprises one or more compounds being selected from the compound with negative dielectric anisotropic (-Δ ε), then the liquid crystal compound with positive dielectric anisotropy (+Δ ε) can improve.In the FFS display format that positive dielectric anisotropic liquid crystals forms, the ratio of transmitance direct ratio and vertical dielectric and dielectric anisotropy, that is:

T∝ε⊥/Δε

Δε=ε l

Wherein T is transmitance, ε for vertical dielectric, ε for parallel dielectric.

According to finding out above, the vertical dielectric increasing liquid-crystal composition is conducive to the transmitance increasing liquid-crystal display, and negative dielectric anisotrop compound has high vertical dielectric, add the vertical dielectric that negative dielectric anisotropy liquid crystal moiety effectively can increase liquid crystal system, effectively increase the transmitance of liquid-crystal display.

Summary of the invention

For the weak point of art technology, the object of the invention is the liquid-crystal composition proposing a kind of high-level efficiency, high-transmission rate, low rotary viscosity γ 1.

Another object of the present invention is the application proposing described liquid-crystal composition.

The concrete technical scheme realizing above-mentioned purpose of the present invention is:

A kind of liquid-crystal composition, comprises the component of following weight percent:

1), the compound representated by one or more general formulas (I) of 5% ~ 40%;

2), the compound representated by one or more general formulas (II) of 1% ~ 30%;

3), the compound representated by one or more general formulas (III) of 10% ~ 60%;

4), one or more general formulas (IV) of 0% ~ 80% and/or the compound representated by logical formula V;

5), one or more general formulas (VI) of 0% ~ 35% and/or the compound representated by general formula (VII):

Formula (I) in formula (VII), R 1, R 3represent methyl or C independently of one another 2~ C 15straight chained alkyl, wherein one or more non-conterminous CH 2can be replaced by Sauerstoffatom, CH=CH; R 2represent H, methyl or C 2~ C 15straight chained alkyl, wherein one or more non-conterminous CH 2can be replaced by Sauerstoffatom, CH=CH;

A 1represent the one in following group:

A 2represent the one in following group:

A 3represent the one in following group:

A 4, A 5, A 6represent the one in following group independently of one another:

Z 1represent singly-bound, CH 2cH 2or CH=CH;

Z 2, Z 3represent singly-bound, CH independently of one another 2cH 2, CH 2cH(CH 3), CH(CH 3) CH 2in one;

M, n, p, q represent 0 or 1 independently of one another; Wherein, as m=0 and p=0 time, Z 2represent CH 2cH(CH 3) or CH(CH 3) CH 2, as m=0 and p=1 time, Z 2and Z 3at least one represents CH 2cH(CH 3) or CH(CH 3) CH 2;

R 6, R 7, R 8, R 9represent methyl or C independently of one another 2~ C 12straight chained alkyl, wherein one or more non-conterminous CH 2can be replaced by O or CH=CH; L 1, L 2, L 3, L 4, L 5, L 6, L 7, L 8, L 9represent H or F independently of one another; X, Y represent F, OCF independently of one another 3, OCF 2h, OCF 2-CF=CF 2/ C 1~ C 5straight chained alkyl in one; Behalf 0 or 1; W represents F or OCF 2-CF=CF 2; Z represents F atom, OCF 3, OCF 2-CF=CF 2, C1 ~ C5 alkyl in one;

A 7represent the one in following group:

A 8represent the one in following group:

Preferably, described liquid-crystal composition contains the component of following weight percent:

1), the compound representated by one or more general formulas (I) of 5% ~ 40%;

2), the compound representated by one or more general formulas (II) of 5% ~ 30%;

3), the compound representated by one or more general formulas (III) of 10% ~ 60%;

4), one or more general formulas (IV) of 1% ~ 70% and/or the compound representated by logical formula V;

5), one or more general formulas (VI) of 0% ~ 35% and/or the compound representated by general formula (VII).

Such as, described liquid-crystal composition contains the component of following weight percent: the 1) compound representated by one or more general formulas (I) of 15% ~ 26%; 2), the compound representated by one or more general formulas (II) of 5% ~ 15%; 3), the compound representated by one or more general formulas (III) of 30% ~ 45%; 4), one or more general formulas (IV) of 15% ~ 35% and/or the compound representated by logical formula V; 5), one or more general formulas (VI) of 9% ~ 15% and/or the compound representated by general formula (VII).

More preferably, described liquid-crystal composition contains the component of following weight percent:

1), the compound representated by one or more general formulas (I) of 5% ~ 40%;

2), the compound representated by one or more general formulas (II) of 5% ~ 30%;

3), the compound representated by one or more general formulas (III) of 10% ~ 60%;

4), the compound representated by one or more general formulas (IV) of 5% ~ 40%;

5), one or more compounds representated by logical formula V of 5% ~ 30%;

6), one or more general formulas (VI) of 0% ~ 35% or the compound representated by general formula (VII).

In liquid-crystal composition provided by the present invention, the compound representated by general formula I has high positive dielectric anisotropy (+△ ε), and feature, the excellent combination property such as mutual solubility is good, viscosity is low.

II type of structured compound provided by the present invention shows as dielectric anisotropy for negative (-△ ε), has good low temperature and viscosity characteristics, adds in positive dielectric anisotropy liquid crystal composition, effectively can improve the light transmission rate of liquid-crystal display.

Two ring structure compounds representated by III class general formula provided by the present invention are non-polar component.This compounds for reduce system viscosity, to improve response speed effect remarkable, is the requisite compounds of liquid crystal compound of allotment response fast.

Compound representated by IV class general formula provided by the present invention is tricyclic structure, and wherein containing two Isosorbide-5-Nitrae-cyclohexane structures, this structure has higher clearing point and lower viscosity performance.

Compound representated by V class general formula provided by the present invention is tricyclic structure, wherein containing two Isosorbide-5-Nitrae-phenylenes, has larger optical anisotropy.

Compound representated by VI class general formula provided by the present invention is tetracyclic structure, has more weak dielectric anisotropy, high clearing point and larger optical anisotropy.

Compound representated by VII class general formula provided by the present invention is tetracyclic structure, has large optical anisotropy and high clearing point performance, has unusual effect for the clearing point and optical anisotropy promoting composition.

Positive dielectric anisotropy liquid crystal composition adds negative dielectric anisotropic composition increase display effect and sees in Chinese patent CN103320142 the earliest; liquid-crystal composition provided by the present invention with the addition of II class moiety; in II class moiety; sec.-propyl bridged bond type of structured compound sees in Chinese patent CN102876332 and CN102851035 the earliest, and its compound has good mutual solubility and applicable negative dielectric anisotropic; Cyclopentanes structural compounds sees in US Patent No. 5759443 and world patent WO2009100204 the earliest, and the characteristics such as its good low temperature intersolubility and suitable clearing point, viscosity, are applicable in the liquid-crystal composition of fast-response liquid-crystal display mode.

Wherein, one or more preferably in following compound of described general formula (I) compound:

Wherein, R 1represent methyl or C 2~ C 7straight chained alkyl; Preferably, R 1represent C 2~ C 5straight chained alkyl.

Wherein, described general formula (II) compound is selected from one or more in following compound:

Wherein, formula II-A in formula II-R, R 2represent H, methyl or C 2~ C 7straight chained alkyl, preferably, R 2represent H or C 2~ C 5straight chained alkyl; Formula II-S in formula II-X, R 2represent methyl or C 2~ C 7straight chained alkyl; Preferably, R 2represent C 2~ C 5straight chained alkyl; R 3represent methyl, C 2~ C 7straight chained alkyl or unbranched alkoxy, preferably, R 3represent methyl or C 2~ C 5straight chained alkyl or C 2~ C 5unbranched alkoxy.

Wherein, described general formula (III) compound is selected from one or more in following compound:

Wherein, described general formula (IV) compound is selected from one or more in following compound:

Wherein, R 6represent C 2~ C 7straight chained alkyl or straight-chain alkenyl, be preferably C 2~ C 5straight chained alkyl or straight-chain alkenyl; Rx represents methyl or C 2~ C 7straight chained alkyl, preferable methyl or C 2the straight chained alkyl of ~ C5.

Wherein, described logical formula V compound is selected from one or more in following compound:

Wherein, R 7represent C 2~ C 5straight chained alkyl or straight-chain alkenyl; Ry represents C 2~ C 5straight chained alkyl.

Wherein, described general formula (VI) compound is selected from one or more in following compound:

Wherein, R 8represent methyl or C 1~ C 7straight chained alkyl, preferred C 2~ C 5straight chained alkyl.

Wherein, described general formula (VII) compound is selected from one or more in following compound:

Wherein, R 9, R zrepresent methyl or C independently of one another 2~ C 7straight chained alkyl or C 2~ C 7straight-chain alkenyl, preferably, in formula VII-A ~ formula VII-C, R 9, R zrepresent C independently of one another 2~ C 5straight chained alkyl, in formula VII-D, R9, Rz represent straight chained alkyl or the C of C1 ~ C5 independently of one another 2~ C 4straight-chain alkenyl; In formula VII-E ~ formula VII-O, R 9represent C 2~ C 5straight chained alkyl.

The application of liquid-crystal composition of the present invention in TN, IPS and FFS mode display device.

The preparation method of liquid-crystal composition of the present invention is without particular restriction, ordinary method can be adopted two or more compound to be produced, at high temperature different components is mixed and method soluble in one another preparation as passed through, wherein, liquid-crystal composition to be dissolved in the solvent for this compound and to mix, then under reduced pressure distilling out this solvent; Or liquid-crystal composition of the present invention can conventionally be prepared, as component less for wherein content being dissolved at a higher temperature in the larger main ingredient of content, or each affiliated component is dissolved in organic solvent, as acetone, chloroform or methyl alcohol etc., obtain after then solvent being removed in solution mixing.

Beneficial effect of the present invention is:

Liquid-crystal composition of the present invention has the light transmission rate of low viscosity, high resistivity, good low temperature intersolubility, fast response speed and excellence, can be used for the fast-response liquid-crystal display of plurality of display modes.Liquid-crystal display is confined to the temperature range of liquid crystal, and liquid crystal only shows display effect within the scope of mesomorphic phase, and during low temperature, the viscosity exponentially of liquid crystal increases, and low temperature response speed is its hard defects of liquid-crystal display, so display effect can reduce greatly.Liquid-crystal composition of the present invention overcomes these problems, there is the light transmission rate of low viscosity and good low-temperature performance and excellence, its use in TN, IPS or FFS mode indicating meter can obviously improve liquid-crystal display display effect, be particularly useful for FFS display format, effectively can improve the light transmission rate of FFS liquid-crystal display

Accompanying drawing explanation

Fig. 1 is the V-T correlation curve of embodiment 15 and comparative example 2.

Embodiment

Following examples for illustration of the present invention, but are not used for limiting the scope of the invention.

In the embodiment of the present invention, the preparation of liquid-crystal composition is all adopted with the following method:

The preparation of uniform liquid crystal adopts the heat of solution method generally used in the industry, first liquid crystalline cpd is weighed by weight percentage with balance, wherein weigh addition sequence without particular requirement, usually mixing is weighed successively with liquid crystalline cpd fusing point order from high to low, at 60-100 DEG C, heated and stirred makes each component melt evenly, again after filtration, revolve steaming, finally encapsulate and obtain target sample.

Except as otherwise noted, in context, per-cent is weight percentage, and all temperature are degree Celsius to provide.Use following abbreviation:

△ n is optical anisotropy (20 DEG C), and Δ ε is dielectric anisotropy (25 DEG C, 1000Hz), ε for vertical dielectric (25 DEG C, 1000Hz), V 10for threshold voltage, be the character voltage (V, 25 DEG C) when relative permeability changes 10%, η is volume viscosity (mm 2/ s, 20 DEG C), Cp is the clearing point (DEG C) of liquid-crystal composition, the time of response (ms) when T (25) is 25 DEG C, the time of response (ms) when T (-20) is-20 DEG C.

For the ease of representing, in following examples, unit structure coded representation shown in table 0 in liquid crystalline cpd:

Table 0: the unit structure code of liquid crystalline cpd

For following structure:

this structure coded representation listed by table 0, be then expressed as 4CDUQUX.

For another example following structure:

this structure coded representation listed by table 0, be then expressed as 5CCPUF.

Embodiment 1:

Get the liquid crystalline cpd of following weight percent and prepare liquid-crystal composition with method described in the present invention, the performance perameter of the liquid-crystal composition of concrete proportioning and gained is in table 1:

The weight percent of each component when performance perameter in the liquid-crystal composition of table 1 embodiment 1

Classification Component Weight percent (%) Performance perameter Parameter value I 3DUQUF 15 △n 0.100 I 2DPUQUF 6 Δε +8.8 I 3DPUQUF 6 ε 5.0 II 3CCEWO2 10 η 13 III 3CCV 42 Cp 80 IV VCCP1 9 T(25) 8.0 VII 3CPGUOCF 3 10 T(-20) 100 VII 3PPGUF 2

Said composition has low viscosity, the fast time of response, is applicable to fast-response liquid crystal display device.

Embodiment 2

Get the liquid crystalline cpd of following weight percent and prepare liquid-crystal composition with method described in the present invention, the performance perameter of the liquid-crystal composition of concrete proportioning and gained is in table 2:

The weight percent of each component when performance perameter in the liquid-crystal composition of table 2 embodiment 2

Classification Component Weight percent (%) Performance perameter Parameter value I 3CDUQUF 13 △n 0.097 I 3PUQUF 10 Δε +12.0 I 2APUQUF 10 ε 6.0 I 3APUQUF 5 η 14 II HCCWO2 6 Cp 89 III 3CCV 42 T(25) 9.0 VI 2CCPUF 5 T(-20) 120 VI 3CCPUF 5 VI 4CCPUF 4

Said composition has high dielectric anisotropy, low viscosity.Be applicable to the liquid crystal display device of fast-response low voltage drive.

Embodiment 3

Get the liquid crystalline cpd of following weight percent and prepare liquid-crystal composition with method described in the present invention, the performance perameter of the liquid-crystal composition of concrete proportioning and gained is in table 3:

The weight percent of each component when performance perameter in the liquid-crystal composition of table 3 embodiment 3

Classification Component Weight percent (%) Performance perameter Parameter value I 3CCQUF 13 △n 0.096 I 3PUQUF 12 Δε +11.0 I 3APUQUF 14 ε 5.5 II 3HCCWO2 5 V 10 1.06 II 3CCEW1 5 η 17 III 3CCV 24 Cp 90 IV VCCP1 9 IV 3CCUF 10 VI 2CCPUF 4 VI 3CCPUF 4

Embodiment 4

Get the liquid crystalline cpd of following weight percent and prepare liquid-crystal composition with method described in the present invention, the performance perameter of the liquid-crystal composition of concrete proportioning and gained is in table 4:

The weight percent of each component when performance perameter in the liquid-crystal composition of table 4 embodiment 4

Classification Component Weight percent (%) Performance perameter Parameter value

I 3CCQUF 7 △n 0.109 I 2APUQUF 12 Δε +9.5 I 3APUQUF 12 ε 6.5 I 3PUQUF 5 η 20 II 2HCPWO2 8 Cp 80 II 3CCEWO2 8 II 3HCCWO2 5 II 3PWO2 6 II 3CWO4 3 III 3CCV 31 VII 4DPGUF 3

Embodiment 5

Get the liquid crystalline cpd of following weight percent and prepare liquid-crystal composition with method described in the present invention, the performance perameter of the liquid-crystal composition of concrete proportioning and gained is in table 5:

The weight percent of each component when performance perameter in the liquid-crystal composition of table 5 embodiment 5

Classification Component Weight percent (%) Performance perameter Parameter value I 3CCQUF 19 △n 0.098 II 2HCCW1 9 Δε +9.0 III 5CCV 13 ε 5.1 III 3CCV1 4 V 10 1.20 IV 2CCUF 8 η 24 IV 3CCUF 8 Cp 101 V 3CPUF 23 VI 2CCPUF 4 VI 3CCPUF 4 VI 4CCPUF 4 VI 5CCPUF 4

Embodiment 6

Get the liquid crystalline cpd of following weight percent and prepare liquid-crystal composition with method described in the present invention, the performance perameter of the liquid-crystal composition of concrete proportioning and gained is in table 6:

The weight percent of each component when performance perameter in the liquid-crystal composition of table 6 embodiment 6

Classification Component Weight percent (%) Performance perameter Parameter value I 3PUQUF 5 △n 0.090

II 3CCEW1 10 Δε +3.0 III 3CCV 40 ε 3.8 III 5CCV 10 V 10 1.90 III 2CC3 10 η 10 VII 4CPGP3 5 Cp 85 VII 5CPGP2 5 T(25) 7.5 VII 5CPGP3 5 T(-20) 80 VII 3DPGUF 10

Said composition has low viscosity, the fast time of response, is applicable to fast-response liquid crystal indicator.

Embodiment 7

Get the liquid crystalline cpd of following weight percent and prepare liquid-crystal composition with method described in the present invention, the performance perameter of the liquid-crystal composition of concrete proportioning and gained is in table 7:

The weight percent of each component when performance perameter in the liquid-crystal composition of table 7 embodiment 7

Classification Component Weight percent (%) Performance perameter Parameter value I 3DUQUF 12 △n 0.110 I 2DPUQUF 8 Δε +8.5 I 3DPUQUF 8 ε 4.6 II 3HPWP2 8 V 10 1.30 III 3CCV 44 η 13 IV VCCP1 9 Cp 80 VII 4HBGB3 6 T(25) 8.2 VII 5HBGB2 5 T(-20) 105

Said composition has the fast time of response, is applicable to the liquid crystal indicator of normal temperature work.Embodiment 8

Get the liquid crystalline cpd of following weight percent and prepare liquid-crystal composition with method described in the present invention, the performance perameter of the liquid-crystal composition of concrete proportioning and gained is in table 8:

The weight percent of each component when performance perameter in the liquid-crystal composition of table 8 embodiment 8

Classification Component Weight percent (%) Performance perameter Parameter value I 3APUQUF 10 △n 0.110 I 3PUQUF 12 Δε +7.5 II 2H2PWP3 10 ε 4.4

III 3CCV 45 V 10 1.28 IV 3CCUF 10 η 12 VI 2CCPUF 3 Cp 75 VI 3CCPUF 3 T(25) 7.5 VI 4CCPUF 3 T(-20) 90 VII 2BGB5 4

Said composition has the fast time of response, is applicable to the liquid crystal indicator of normal temperature work.Embodiment 9

Get the liquid crystalline cpd of following weight percent and prepare liquid-crystal composition with method described in the present invention, the performance perameter of the liquid-crystal composition of concrete proportioning and gained is in table 9:

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

Classification Component Weight percent (%) Performance perameter Parameter value I 3PUQUF 13 △n 0.096 II 2HCCW1 10 Δε +9.0 II 3HCCW1 10 ε 5.4 III 4CCV 13 η 22 IV VCCP1 4 Cp 100 IV V2CCP1 13 IV VCCGF 8 IV 4CCUF 10 IV 5CCUF 4 VI 2CCPUF 4 VI 3CCPUF 4 VII 3CPPC3 4 VII 3CGPC3 3

Embodiment 10

Get the liquid crystalline cpd of following weight percent and prepare liquid-crystal composition with method described in the present invention, the performance perameter of the liquid-crystal composition of concrete proportioning and gained is in table 10:

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

Classification Component Weight percent (%) Performance perameter Parameter value I 3PUQUF 5 △n 0.100 I 3CCQUF 15 Δε +8.5

I 2APUQUF 5 ε 5.1 I 3DPUQUF 9 V 10 1.25 II 2H2CCWO2 6 η 13 III 3CCV 34 Cp 101 III 3CCV1 2 IV VCCP1 2 IV 3CCUF 10 VI 3CCPUF 4 VII 3CPGUOCF3 4 VII 3CPPC3 4

The present embodiment combination, without having high clearing point and low viscosity, is suitable for wide temperature fast-response liquid crystal display device.

Embodiment 11

Get the liquid crystalline cpd of following weight percent and prepare liquid-crystal composition with method described in the present invention, the performance perameter of the liquid-crystal composition of concrete proportioning and gained is in table 11:

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

Classification Component Weight percent (%) Performance perameter Parameter value I 3PUQUF 9 △n 0.110 II 2CCEWO2 3 Δε +6.0 II 3HCCWO2 9 ε 4.4 III 3CCV 38 V 10 1.45 III 3CCV1 9 η 11 VII 3CPPC3 4 Cp 76 VII 2PGP3 5 T(25) 7.2 VII 2PGP4 6 T(-20) 83 VII 2PGUF 8 VII 3PGUF 9

The composition that the present embodiment provides has the fast time of response, under especially showing low-temperature condition, is suitable for fast-response liquid crystal indicator.

Embodiment 12

Get the liquid crystalline cpd of following weight percent and prepare liquid-crystal composition with method described in the present invention, the performance perameter of the liquid-crystal composition of concrete proportioning and gained is in table 12:

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

Classification Component Weight percent (%) Performance perameter Parameter value I 2APUQUF 5 △n 0.095 I 3APUQUF 8 Δε +11.5 I 3DCQUF 13 ε 6.2 II 3H2CCWO2 8 V 10 1.05 III 3CCV 19 η 18 IV VCCGF 10 Cp 91 IV 2CCUF 5 IV 3CCUF 10 IV 5CCUF 5 V 3CPGF 5 V 5CPUF 2 V 3CGUF 5 VI 3CCPUF 5

Embodiment 13

Get the liquid crystalline cpd of following weight percent and prepare liquid-crystal composition with method described in the present invention, the performance perameter of the liquid-crystal composition of concrete proportioning and gained is in table 13:

The weight percent of each component when performance perameter in the liquid-crystal composition of table 13 embodiment 13

Classification Component Weight percent (%) Performance perameter Parameter value I 3CCQUF 15 △n 0.102 I 3PUQUF 15 Δε +8.6 II 2H2CCWO2 13 ε 5.2 III 3CCV 24 V 10 1.25 IV V2CCP1 10 η 18 V 3CPUF 10 Cp 100 VI 2CCPUF 4 VI 3CCPUF 5 V 4CCPUF 4

Embodiment 14

Get the liquid crystalline cpd of following weight percent and prepare liquid-crystal composition with method described in the present invention, the performance perameter of the liquid-crystal composition of concrete proportioning and gained is in table 14:

The weight percent of each component when performance perameter in the liquid-crystal composition of table 14 embodiment 14

Classification Component Weight percent (%) Performance perameter Parameter value I 3PUQUF 8 △n 0.103 III 3CCV 27 Δε +6.5 III 3CCV1 5 ε 4.6 II 2HCCW1 6 V 10 1.45 IV VCCP1 13 η 14 IV V2CCP1 11 Cp 90 IV 3CCUF 4 V 3CPUF 9 V 3CGUF 7 VI 3CCPUF 7 VII 2PGUF 3

Embodiment 15

Get the liquid crystalline cpd of following weight percent and prepare liquid-crystal composition with method described in the present invention, the performance perameter of the liquid-crystal composition of concrete proportioning and gained is in table 15:

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

Classification Component Weight percent (%) Performance perameter Parameter value I 3PUQUF 15 △n 0.100 II 2CCEWO2 5 Δε +6.5 III 3CCV 36 ε 4.3 IV VCCP1 10 V 10 1.45 IV V2CCP1 10 η 12 V 3CPUF 10 Cp 90 VI 2CCPUF 4 T(25) 7.6 VI 3CCPUF 4 T(-20) 95 VI 4CCPUF 4 VI 5CCPUF 2

Embodiment 16

Get the liquid crystalline cpd of following weight percent and prepare liquid-crystal composition with method described in the present invention, the performance perameter of the liquid-crystal composition of concrete proportioning and gained is in table 16:

The weight percent of each component when performance perameter in the liquid-crystal composition of table 16 embodiment 16

Classification Component Weight percent (%) Performance perameter Parameter value I 3DPUQUF 15 △n 0.100 II 3HCWO2 6 Δε +8.0 III 3CCV 33 ε 4.7 IV 3CCUF 10 V 10 1.25 V 3CPUF 10 η 12 V 3CGUF 10 Cp 90 VI 2CCPUF 4 T(25) 7.8 VI 3CCPUF 4 T(-20) 100 VI 4CCPUF 4 VI 5CCPUF 4

Said composition has relatively high clearing point and fast time of response, is particularly useful for fast-response liquid crystal indicator.

Comparative example 1

Get the liquid crystalline cpd of following weight percent and prepare liquid-crystal composition with method described in the present invention, the performance perameter of the liquid-crystal composition of concrete proportioning and gained is in table 17:

The weight percent of each component when performance perameter in the liquid-crystal composition of table 17 comparative example 1

Component Weight percent (%) Performance perameter Parameter value 3CCV 33 △n 0.096 2PGUF 2 Δε +8.6 2CCUF 10 ε 3.7 3CCUF 10 V 10 1.18 3CPUF 6 η 17 2CGUF 7 Cp 90 3CGUF 6 T(25) 15 2CCPUF 7 T(-20) 280 3CCPUF 6 4CCPUF 6 3CCGUF 7

Comparative example 2 and comparative example 1, embodiment 2 polarity is stronger, and threshold voltage is lower, but the time of response is obviously better than comparative example 1, when especially showing low temperature.

Comparative example 2

Get the liquid crystalline cpd of following weight percent and prepare liquid-crystal composition with method described in the present invention, the performance perameter of the liquid-crystal composition of concrete proportioning and gained is in table 18:

The weight percent of each component when performance perameter in the liquid-crystal composition of table 18 comparative example 2

Component Weight percent (%) Performance perameter Parameter value 3CCV 35 △n 0.100 2PGUF 5 Δε +6.5 2CCUF 10 ε 3.8 3CCUF 10 V 10 1.45 3CPUF 14 η 16 VCCP1 10 Cp 90 2CCPUF 4 T(25) 13 3CCPUF 4 T(-20) 246 4CCPUF 4 5CCPUF 4

Comparative example 15 and comparative example 2 can be found out, embodiment 15 has lower viscosity, faster time of response than comparative example 2, and especially low temperature response is obviously better than comparative example 2.

In addition, the present invention has also investigated the light transmission rate of embodiment 15 and comparative example 2, as seen from Figure 1, liquid-crystal composition provided by the present invention has better light transmission rate, during on state of, the transmitance of embodiment 15 adds about 10% on the basis of comparative example 2, the effective brightness problem solving liquid-crystal display.

The liquid-crystal composition of the positive dielectric anisotropy containing negative dielectric anisotropic component provided by the present invention, there is low viscosity, high resistivity, applicable optical anisotropy, larger dielectric anisotropy, excellent light stability and thermostability, and good light transmission rate, the problems such as liquid-crystal display response speed, transmitance can be solved, be particularly useful for the liquid crystal indicator of fast-response high brightness.In addition, composition provided by the present invention can solve liquid-crystal display high/low temperature and show bad shortcoming, has better high/low temperature display effect.

Above embodiment is only be described the preferred embodiment of the present invention; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various modification that the common engineering technical personnel in this area make technical scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determine.

Claims (6)

1. a liquid-crystal composition, is characterized in that, is made up of the component of following weight percent:
1), the compound representated by one or more general formulas (I) of 5% ~ 40%;
2), the compound representated by one or more general formulas (II) of 5% ~ 30%;
3), the compound representated by one or more general formulas (III) of 10% ~ 60%;
4), the compound representated by one or more general formulas (IV) of 5% ~ 40%;
5), one or more compounds representated by logical formula V of 5% ~ 30%;
6), one or more general formulas (VI) of 0% ~ 35% or the compound representated by general formula (VII);
Wherein, described general formula (I) compound is selected from one or more in following compound:
Wherein, R 1represent methyl or C 2~ C 7straight chained alkyl; Wherein, described general formula (II) compound is selected from one or more in following compound:
Wherein, formula II-A in formula II-R, R 2represent H, methyl or C 2~ C 7straight chained alkyl, formula II-S in formula II-X, R 2represent methyl or C 2~ C 7straight chained alkyl; R 3represent methyl, C 2~ C 7straight chained alkyl or unbranched alkoxy;
Wherein, described general formula (III) compound is selected from one or more in following compound:
Wherein, described general formula (IV) compound is selected from one or more in following compound:
Wherein, R 6represent C 2~ C 7straight chained alkyl or straight-chain alkenyl, Rx represents methyl or C 2~ C 7straight chained alkyl;
Wherein, described logical formula V compound is selected from one or more in following compound:
Wherein, R 7represent C 2~ C 5straight chained alkyl or straight-chain alkenyl; Ry represents C 2~ C 5straight chained alkyl;
Wherein, described general formula (VI) compound is selected from one or more in following compound:
wherein, R 8represent methyl or C 2~ C 7straight chained alkyl;
Wherein, described general formula (VII) compound is selected from one or more in following compound:
Wherein, R 9, R zrepresent methyl or C independently of one another 2~ C 7straight chained alkyl or C 2~ C 7straight-chain alkenyl.
2. liquid-crystal composition as claimed in claim 1, is characterized in that, R 1represent C 2~ C 5straight chained alkyl.
3. liquid-crystal composition as claimed in claim 1, is characterized in that, formula II-A in formula II-R, R 2represent H or C 2~ C 5straight chained alkyl; Formula II-S in formula II-X, R 2represent C 2~ C 5straight chained alkyl; R 3represent methyl or C 2~ C 5straight chained alkyl or C 2~ C 5unbranched alkoxy.
4. liquid-crystal composition as claimed in claim 1, is characterized in that, R 6be represented as C 2~ C 5straight chained alkyl or straight-chain alkenyl; Methyl or C are selected in Rx representative 2~ C 5straight chained alkyl.
5. liquid-crystal composition as claimed in claim 1, is characterized in that, R 8represent C 2~ C 5straight chained alkyl.
6. liquid-crystal composition as claimed in claim 1, is characterized in that, in formula VII-A ~ formula VII-C, and R 9, R zrepresent C independently of one another 2~ C 5straight chained alkyl, in formula VII-D, R 9, Rz represents C independently of one another 1~ C 5straight chained alkyl or C 2~ C 4straight-chain alkenyl; In formula VII-E ~ formula VII-O, R 9represent C 2~ C 5straight chained alkyl.
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