CN108059962A - A kind of liquid-crystal composition and its application - Google Patents

A kind of liquid-crystal composition and its application Download PDF

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CN108059962A
CN108059962A CN201610986030.3A CN201610986030A CN108059962A CN 108059962 A CN108059962 A CN 108059962A CN 201610986030 A CN201610986030 A CN 201610986030A CN 108059962 A CN108059962 A CN 108059962A
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general formula
compound representated
liquid
crystal composition
compound
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CN201610986030.3A
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陈卯先
陈海光
姜卫东
王杰
姜天孟
未欣
郭云鹏
袁瑾
伍嘉
田会强
苏学辉
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北京八亿时空液晶科技股份有限公司
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Publication of CN108059962A publication Critical patent/CN108059962A/en

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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K19/00Liquid crystal materials
    • C09K19/04Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
    • C09K19/42Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40
    • C09K19/44Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40 containing compounds with benzene rings directly linked
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K19/00Liquid crystal materials
    • C09K19/04Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
    • C09K2019/0444Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit characterized by a linking chain between rings or ring systems, a bridging chain between extensive mesogenic moieties or an end chain group
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K19/00Liquid crystal materials
    • C09K19/04Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
    • C09K2019/0444Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit characterized by a linking chain between rings or ring systems, a bridging chain between extensive mesogenic moieties or an end chain group
    • C09K2019/0466Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit characterized by a linking chain between rings or ring systems, a bridging chain between extensive mesogenic moieties or an end chain group the linking chain being a -CF2O- chain
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K19/00Liquid crystal materials
    • C09K19/04Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
    • C09K2019/0477Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit characterized by the positioning of substituents on phenylene

Abstract

The present invention relates to liquid crystal material fields, more particularly to a kind of liquid-crystal composition and its application, containing four class compounds representated by general formula I IV, wherein, the compound representated by general formula I has stronger polarity, low ionic and very excellent ion rejection ability;Compound representated by general formula II has the characteristics that low rotary viscosity and excellent intersolubility;Compound representated by general formula III has the characteristics that strong polarity and good intersolubility;Compound representated by general formula IV has high clearing point and big elastic constant, is conducive to improve the elastic constant of liquid-crystal composition.Liquid-crystal composition of the present invention has low rotary viscosity, big elastic constant, good low temperature intersolubility and excellent image retention recovery capability, liquid crystal display image retention problem can be effectively improved, the use in TN, IPS or FFS mode display can be obviously improved liquid crystal display display effect;It is particularly suitable for IPS, FFS liquid crystal display.

Description

A kind of liquid-crystal composition and its application

Technical field

The present invention relates to a kind of liquid-crystal composition, specifically a kind of nematic phase liquid crystal composition, exactly this hair Bright provided liquid-crystal composition has big dielectric anisotropy and excellent quality characteristic, and more specifically the present invention is carried The liquid-crystal composition of confession has very excellent image retention performance.

Background technology

At present, liquid crystal is widely applied in field of information display, while the application in optical communication also achieves one Fixed progress (S.T.Wu, D.K.Yang.Reflective Liquid Crystal Displays.Wiley, 2001).It is near several Year, the application field of liquid-crystal compounds significantly widens kinds of displays part, electro-optical device, electronic component, sensor etc., Nematic liquid crystal compound obtains most commonly used application in flat-panel monitor, particularly for tft active matrix In system.

Liquid crystal display experienced very long road for development with the discovery of liquid crystal.Austrian botanist in 1888 Friedrich Reinitzer are found that 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.Zocher founded continuum theory in 1933, and obtained 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 two major class of property by W.Kast accordingly.Nineteen twenty-seven, V.Freedericksz and V.Zolinao has found that nematic liquid crystal under electric field or magnetic fields, deforms upon and there are voltages Threshold value (Freederichsz transformations).This making for being found to be liquid crystal display provides foundation.

Nineteen sixty-eight RCA Corp. of U.S. R.Williams has found that 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 principles, and people are using TN photoelectric effect and integrate Circuit is combined, and is made display device (TN-LCD), and wide prospect has been opened up 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) pattern And active matrix (the Active matrix that P.Brody was proposed in 1972:AM) mode is used again.Traditional TN- LCD technology has developed into STN-LCD and TFT-LCD technologies, 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 during rise, 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 some military instrument are shown, it is believed that TFT-LCD technologies have more wide application prospect.

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

Monocrystalline silicon limits display size as substrate material, because each several part display device even module assembled is tied at it Occur many problems at conjunction.Thus, second of thin film transistor (TFT) is the promising active matrix type of tool, the photoelectricity effect utilized Should be typically TN effects.TFT includes compound semiconductor, such as Cdse or the TFT based on polycrystalline or amorphous silicon.

Liquid crystal display has the advantages that display effect is good, at low cost, and therefore, liquid crystal display becomes the master of display industry Stream.As people are higher and higher to display quality requirement, the image retention problem of liquid crystal display increasingly attracts attention.Image retention is Image residue (Image Sticking) is to keep a static picture for a long time on the screen, since liquid crystal molecule receives Long-term polarization or ion enrichment cause liquid crystal molecule cannot the lower normal deflection of signal voltage control again.Picture switching successor so may be used To see upper one static portrait trace.

The ion contained in liquid-crystal composition moves under DC electric field effect, forms ion electric field, causes liquid crystal Molecule experiences electric field and changes, and the variation of liquid crystal display transmitance generates image retention problem;As picture changes, in display Portion's electric field switching, ion are disappeared by image retention after releveling.

The present invention provides a kind of liquid-crystal composition, has big dielectric anisotropy, the drive of liquid crystal display is reduced with this Dynamic voltage, on the other hand, by being formulated design optimization, reducing the ion concentration of liquid-crystal composition and accelerating ion releveling Speed improves image retention problem and accelerates image retention extinction time.

The content of the invention

The present invention provides a kind of liquid-crystal composition with good image retention performance, and feature is to include at least a kind of general formula Compound representated by I:

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

And at least one compounds of formula II:

Wherein, R2Represent C1~C12Straight chained alkyl, R3Represent H, C1~C12Straight chained alkyl;

And including at least a kind of compounds of formula III:

R4Represent C1~C12Straight chained alkyl, wherein one or more non-conterminous CH2It can be taken by O, S or CH=CH Generation;N represents 0 or 1;L1For H or F;A is represented:

And a kind of compound representated by including at least general formula IV:

R5Represent C1~C12Straight chained alkyl or C2~C12Straight-chain alkenyl, R6Represent F, CF3、OCF3、C1~C12Straight chain Alkyl, B are representedOr

Compound representated by general formula I provided by the present invention contains 2- methyl -3,4,5- trifluoro-benzenes structure and difluoro first The tetracyclic structure of oxygroup bridged bond, such compound recover have very big contribution for improving liquid crystal display image retention.

Specifically, compounds of formula I is selected from the compound representated by 1~I5 of Formulas I:

Preferably, compounds of formula I provided by the present invention is selected from I2~I5;It is highly preferred that the change representated by general formula I Conjunction object is I2 or I3;Most preferably I3.

Suitable addition of the compound in the liquid-crystal composition representated by general formula I of the present invention is 1- 20%, it is preferably 4-15%, more preferably 8-13%.

Compound dicyclohexyl vinyl compound representated by general formula II provided by the invention, the structure have low rotation Viscosity, specifically, the compound representated by the general formula II is selected from the one or more of following compound:

Wherein, R2Represent C1~C7Straight chained alkyl.

Preferably, the compound representated by general formula II is selected from one kind or several of the compound representated by Formula II A1~Formula II B4 Kind:

It is highly preferred that the preferred IIA2, IIA4 of compound, IIB1, IIB2 representated by general formula II provided by the present invention, One or more in IIB4.

It is particularly preferred that one kind in IIA2 or IIB2 of the compound representated by general formula II provided by the present invention or Two kinds.

Suitable addition of the compound in the liquid-crystal composition representated by general formula II of the present invention is 20- 50%, it is preferably 35-50%, more preferably 40-45%.

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

Specifically, compound representated by general formula III be selected from the compound representated by formula III A~formula III D one kind or It is several:

Wherein, R4Represent C1~C7Straight chained alkyl.

Preferably, the compound representated by general formula III is selected from one kind of the compound representated by formula III A1~formula III D4 It is or several:

It is highly preferred that compound representated by general formula I provided by the present invention be selected from IIIA1, IIIA2, IIIB1, One or more in IIIB2, IIIC1, IIIC2, IIID2, IIID3.

It is particularly preferred that compound representated by general formula III provided by the present invention be selected from IIIA2, IIIB2, IIIC1, One or more in IIIC2, IIID3.

Suitable addition of the compound in the liquid-crystal composition representated by general formula III of the present invention is 10- 40%, it is preferably 18-35%, more preferably 23-30%.

Compound representated by general formula IV of the present invention be selected from the compound representated by formula IV A~formula IV D one kind or It is a variety of:

Wherein, R5Represent C2~C7Straight chained alkyl or straight-chain alkenyl;R6Represent C1~C7Straight chained alkyl.

Preferably, one or more of the compound representated by general formula IV in formula IV A1~formula IV D4 structures:

It is highly preferred that compound representated by general formula IV be selected from formula IV A1, IVA2, IVA8, IVA12, IVA16, IVB3, One or more in IVB12, IVB16, IVC1, IVC2, IVC4, IVD1, IVD2.

It is particularly preferred that the compound representated by general formula IV is selected from formula IV A1, IVA8, IVB12, IVB16, IVC2, IVD1 In one or more.

Suitable addition of the compound in the liquid-crystal composition representated by general formula IV of the present invention is 1- 40%, it is preferably 10-30%, more preferably 15-25% or 25-20%.

Compound of the liquid-crystal composition of the present invention representated by also comprising one or more general formula V:

Wherein, R7、R8C is represented independently1~C12Straight chained alkyl, L2Represent H or F.

Compound representated by general formula V is Fourth Ring neutral compound, each with very high clearing point and larger optics Anisotropy.

Specifically, one or more of the compound representated by general formula V of the present invention in following compound:

Wherein, R7、R8C is represented independently1~C7Straight chained alkyl.

Preferably, one or more of the compound representated by the general formula V in Formula V A1~VB16:

It is highly preferred that compounds of formula V of the present invention is selected from one or both of VA5 or VB6.

The optional component in compound position representated by general formula V of the present invention is suitable in the liquid-crystal composition Addition is 0-15%, and when its addition is not 0, suitable addition is preferably 3-8%.

For specific, in order to which liquid-crystal composition is made to meet the needs of different, liquid-crystal composition bag provided by the present invention Component containing following mass percent:

(1), the compound representated by 1~20% general formula I;

(2), the compound representated by 20~50% general formula II;

(3), the compound representated by 10~40% general formula III;

(4), the compound representated by 1~40% general formula IV;

(5), the compound representated by 0~15% general formula V.

Preferably, liquid-crystal composition provided by the present invention includes the component of following mass percent:

(1), the compound representated by 3~15% general formula I;

(2), the compound representated by 30~50% general formula II;

(3), the compound representated by 15~35% general formula III;

(4), the compound representated by 5~35% general formula IV;

(5), the compound representated by 0~10% general formula V.

It is highly preferred that liquid-crystal composition provided by the present invention includes the component of following mass percent:

(1), the compound representated by 4~13% general formula I;

(2), the compound representated by 35~45% general formula II;

(3), the compound representated by 18~29% general formula III;

(4), the compound representated by 10~29% general formula IV;

(5), the compound representated by 0~5% general formula V.

It is particularly preferred that liquid-crystal composition provided by the present invention includes the component of following mass percent:

(1), the compound representated by 4~13% general formula I;

(2), the compound representated by 35~45% general formula II;

(3), the compound representated by 23~29% general formula III;

(4), the compound representated by 10~23% general formula IV;

(5), the compound representated by 5% general formula V.

Or

(1), the compound representated by 8% general formula I;

(2), the compound representated by 43~45% general formula II;

(3), the compound representated by 18~29% general formula III;

(4), the compound representated by 20~29% general formula IV.

The component of following mass percent is included as more preferably technical solution liquid-crystal composition provided by the present invention:

Compound representated by general formula I provided by the present invention has stronger polarity, low ionic and very excellent Different ion rejection ability can effectively improve the ability of liquid crystal display image retention recovery;Change representated by general formula II Conjunction object is dicyclohexyl alkenes structure, has the characteristics that low rotary viscosity and excellent intersolubility, is that fast-response liquid crystal display must Indispensable component;Compound representated by general formula III is to contain 2- methyl -3,4,5- trifluoro-benzenes and difluoro-methoxy bridged bond phase Compound even, such compound have the characteristics that strong polarity and good intersolubility;Compound representated by general formula IV is non- Polarity tricyclic compound, such monomer have high clearing point and big elastic constant, are conducive to improve the bullet of liquid-crystal composition Property constant;Compound representated by general formula V is tetracyclic structure, such compound has very high clearing point and larger optics Anisotropy.

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

Liquid-crystal composition of the present invention have low rotary viscosity, big elastic constant, good low temperature intersolubility and Excellent image retention recovery capability, can be effectively improved liquid crystal display image retention problem, suitable for the 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 liquid crystal displays.

Specific embodiment

Following embodiment is not limited to the scope of the present invention for illustrating the present invention.

Unless otherwise indicated, percentage is weight percentage in the present invention;Temperature unit is degree Celsius;△ n represent optics Anisotropy (25 DEG C);εAnd εParallel and vertical dielectric constant (25 DEG C, 1000Hz) is represented respectively;△ ε represent dielectric respectively to Different in nature (25 DEG C, 1000Hz);γ 1 represents rotary viscosity (mPa.s, 25 DEG C);Cp represents the clearing point (DEG C) of liquid-crystal composition; K11、K22、K33Splay, distortion and bend elastic constant (pN, 25 DEG C) are represented respectively.

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

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

By taking following compound structure as an example:

It is expressed as:4CDUQKF

It is expressed as:5CCPUF

In following embodiment, the preparation of liquid-crystal composition is comprised the following steps using heat of solution method:It is pressed with balance Weight percent weighs liquid-crystal compounds, wherein addition sequence is weighed without particular requirement, usually with liquid-crystal compounds fusing point by height Mixing is weighed successively to low order, heating stirring causes each component to melt uniform at 60~100 DEG C, using filter, rotates, 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 Following table.

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

Comparative example 1

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

Compared with embodiment 4 is summarized with each performance parameter value of 1 gained liquid-crystal composition of comparative example, referring to table 15.

Table 15:The performance parameter of liquid-crystal composition compares

△n △ε Cp γ1 K11 K22 K33 Embodiment 4 0.100 +8.6 96 87 13.6 6.8 17.5 Comparative example 1 0.100 +8.6 100 88 13.8 6.9 16.7

It is tested by being carried out at the same time image retention to the liquid crystal panel made by embodiment and comparative example 1, test result such as table Shown in 16:

Table 16:The evaluation and test of liquid crystal panel image retention is compared

Comparative example 1 is compared, the liquid-crystal composition parameter that embodiment 4 is provided is consistent, has identical level of residual image, but its With very fast image retention extinction time.

As seen from the above embodiment, liquid-crystal composition provided by the present invention has low viscosity, big elastic constant, high electricity Resistance rate, suitable optical anisotropy, good low temperature intersolubility and excellent photostability and thermal stability, can reduce liquid The image retention extinction time of crystal display, so as to solve liquid crystal display image retention problem.Therefore, liquid crystal combination provided by the present invention Object is suitable for TN, IPS and FFS type TFT liquid crystal display devices of fast-response, is particularly suitable for IPS and FFS types liquid crystal display dress It puts.

Although above the present invention is described in detail with a general description of the specific embodiments, On the basis of the present invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Cause This, these modifications or improvements, belong to the scope of protection of present invention without departing from theon the basis of the spirit of the present invention.

Claims (10)

1. a kind of liquid-crystal composition, which is characterized in that the liquid-crystal composition includes the chemical combination representated by least one general formula I Object;
Wherein, R1Represent C1~C12Straight chained alkyl or C2~C12Straight-chain alkenyl;
And the compound representated by least one general formula II:
Wherein, R2Represent C1~C12Straight chained alkyl, R3Represent H, C1~C12Straight chained alkyl;
And a kind of compound representated by including at least general formula III:
Wherein, R4Represent C1~C12Straight chained alkyl, wherein one or more non-conterminous CH2It can be taken by O, S or CH=CH Generation;N represents 0 or 1;L1For H or F;A is represented:
And a kind of compound representated by including at least general formula IV:
Wherein, R5Represent C1~C12Straight chained alkyl or C2~C12Straight-chain alkenyl, R6Represent F, CF3、OCF3、C1~C12Straight chain Alkyl, B are represented
2. liquid-crystal composition according to claim 1, which is characterized in that the compound representated by the general formula I is selected from formula One or more in I1~I5:
Preferably, the compound representated by the general formula I is selected from one or more of I2~I5;More preferably I2 or I3;
It is further preferred that addition of the compound representated by the general formula I in the liquid-crystal composition is 1-20%.
3. liquid-crystal composition according to claim 1 or 2, which is characterized in that the compound choosing representated by the general formula II One or more from Formula II A~Formula II B:
Wherein, R2Represent C1~C7Straight chained alkyl;
Preferably, one or more of the compound representated by the general formula II in Formula II A1~Formula II B4:
It is highly preferred that the general formula II one kind in IIA2, IIA4, IIB1, IIB2, IIB4 of representative compound or It is a variety of;Most preferably one or both of IIA2, IIB2;
It is further preferred that addition of the compound representated by the general formula II in the liquid-crystal composition is 20- 50%.
4. according to the liquid-crystal composition described in claims 1 to 3 any one, which is characterized in that representated by the general formula III Compound is selected from one or more of formula III A~formula III D:
Wherein, R4Represent C1~C7Straight chained alkyl;
Preferably, the compound representated by the general formula III is selected from one or more of formula III A1~formula III D4:
It is highly preferred that compound representated by the general formula III be selected from IIIA1, IIIA2, IIIB1, IIIB2, IIIC1, One or more in IIIC2, IIID2, IIID3;One kind particularly in IIIA2, IIIB2, IIIC1, IIIC2, IIID3 or It is a variety of;
It is further preferred that addition of the compound in the liquid-crystal composition representated by the general formula III is 10- 40%.
5. according to the liquid-crystal composition described in Claims 1 to 4 any one, which is characterized in that representated by the general formula IV One or more of the compound in formula IV A~formula IV D:
Wherein, R5Represent C2~C7Straight chained alkyl or straight-chain alkenyl;R6Represent C1~C7Straight chained alkyl;
Preferably, one or more of the Formula IVIV compound in formula IV A1~formula IV D4:
It is highly preferred that compound representated by the general formula IV be selected from formula IV A1, IVA2, IVA8, IVA12, IVA16, IVB3, One or more in IVB12, IVB16, IVC1, IVC2, IVC4, IVD1, IVD2;
Most preferably, the compound representated by the general formula IV is in formula IV A1, IVA8, IVB12, IVB16, IVC2, IVD1 One or more;
It is further preferred that addition of the compound representated by the general formula IV in the liquid-crystal composition is 1- 40%.
6. according to the liquid-crystal composition described in Claims 1 to 5 any one, which is characterized in that the liquid-crystal composition is also Include the compound representated by one or more general formula V:
Wherein, R7、R8The straight chained alkyl of C1~C12, L are represented independently2Represent H or F;
Preferably, one or more of the compound representated by the general formula V in following compound:
Wherein, R7、R8C is represented independently1~C7Straight chained alkyl;
It is highly preferred that one or more of the compound representated by the general formula V in Formula V A1~VB16:
Most preferably, the compound representated by the general formula V is selected from one or both of VA5 or VB6;
It is further preferred that addition of the compound representated by the general formula V in the liquid-crystal composition is 3-8%.
7. according to the liquid-crystal composition described in claim 1~6 any one, which is characterized in that the liquid-crystal composition includes Following components in percentage by weight:
(1), the compound representated by 1~20% general formula I;
(2), the compound representated by 20~50% general formula II;
(3), the compound representated by 10~40% general formula III;
(4), the compound representated by 1~40% general formula IV;
(5), the compound representated by 0~15% general formula V;
Preferably, the liquid-crystal composition includes the component of following mass percent:
(1), the compound representated by 3~15% general formula I;
(2), the compound representated by 30~50% general formula II;
(3), the compound representated by 15~35% general formula III;
(4), the compound representated by 5~35% general formula IV;
(5), the compound representated by 0~10% general formula V;
It is highly preferred that the liquid-crystal composition includes the component of following mass percent:
(1), the compound representated by 4~13% general formula I;
(2), the compound representated by 35~45% general formula II;
(3), the compound representated by 18~29% general formula III;
(4), the compound representated by 10~29% general formula IV;
(5), the compound representated by 0~5% general formula V;
It is particularly preferred that the liquid-crystal composition includes the component of following mass percent:
(1), the compound representated by 4~13% general formula I;
(2), the compound representated by 35~45% general formula II;
(3), the compound representated by 23~29% general formula III;
(4), the compound representated by 10~23% general formula IV;
(5), the compound representated by 5% general formula V;
Or:
(1), the compound representated by 8% general formula I;
(2), the compound representated by 43~45% general formula II;
(3), the compound representated by 18~29% general formula III;
(4), the compound representated by 20~29% general formula IV.
8. according to the liquid-crystal composition described in claim 1-6 any one, which is characterized in that the liquid-crystal composition include with The component of lower mass percent:
9. the liquid-crystal composition according to claim 7 or 8, which is characterized in that the sum of weight percent of the component is 100%.
10. liquid-crystal composition described in claim 1~9 any one is in the application of field of liquid crystal display, preferably in TN, IPS or FFS mode display, the more preferably application in IPS, FFS liquid crystal display.
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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104673323A (en) * 2015-02-04 2015-06-03 北京八亿时空液晶科技股份有限公司 Liquid crystal composition containing 2-methyl-3,4,5-trifluorophenyl liquid crystal compound and application thereof
CN104830349A (en) * 2015-03-13 2015-08-12 北京八亿时空液晶科技股份有限公司 Liquid crystal composition containing 2-methyl-3,4,5-trifluorobenzene liquid crystal compound and application thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104673323A (en) * 2015-02-04 2015-06-03 北京八亿时空液晶科技股份有限公司 Liquid crystal composition containing 2-methyl-3,4,5-trifluorophenyl liquid crystal compound and application thereof
CN104830349A (en) * 2015-03-13 2015-08-12 北京八亿时空液晶科技股份有限公司 Liquid crystal composition containing 2-methyl-3,4,5-trifluorobenzene liquid crystal compound and application thereof

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