CN108690637A - A kind of liquid-crystal composition containing fluoroethoxy compound and its application - Google Patents

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

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Publication number
CN108690637A
CN108690637A CN201710217883.5A CN201710217883A CN108690637A CN 108690637 A CN108690637 A CN 108690637A CN 201710217883 A CN201710217883 A CN 201710217883A CN 108690637 A CN108690637 A CN 108690637A
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general formula
compound representated
compound
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representated
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陈卯先
陈海光
姜天孟
王杰
储士红
未欣
伍嘉琦
田会强
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Beijing Bayi Space LCD Technology Co Ltd
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Beijing Bayi Space LCD Technology Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K19/00—Liquid crystal materials
    • C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
    • C09K19/42—Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40
    • C09K19/44—Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40 containing compounds with benzene rings directly linked

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  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
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Abstract

The present invention relates to a kind of liquid-crystal compositions containing fluoroethoxy compound, wherein including the compound representated by least one general formula I and the compound representated by least one general formula II.Compound representated by general formula I is the liquid-crystal compounds for containing 2,3- difluorobenzenes structure and end fluorine substitution ethoxy alkyl, which has big negative dielectric anisotropic and high clearing point;The liquid-crystal compounds that general formula II is provided is the compound that two rings contain 2,3- difluorobenzenes, such compound has big dielectric anisotropy, low rotary viscosity and excellent intersolubility.Liquid-crystal composition of the present invention has low rotary viscosity, 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 the VA such as VA/MVA/PVA/PSVA class displays and IPS or FFS mode display can be obviously improved liquid crystal display display effect, especially effective for the response time for promoting liquid crystal display.

Description

A kind of liquid-crystal composition containing fluoroethoxy compound and its application
Technical field
The invention belongs to liquid crystal material and its application fields, are related to a kind of liquid-crystal composition, specifically a kind of nematic Phase liquid-crystal composition, exactly liquid-crystal composition provided by the present invention is with negative dielectric anisotropy, more specifically Liquid-crystal composition provided by the present invention contains a kind of fluorine substitution ethoxy compound.
Background technology
Currently, 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 close 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, is especially used 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 It is discussed as statistical fluctuation 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 property two major classes 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 finds 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 foreground 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 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 technologies have more wide 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 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.
Negative liquid crystal is most proposed earlier than the end of the eighties in last century, is mainly used for VA patterns, major advantage is to compare Degree is high, and major defect is that visual angle is small, and the response time is slow.With the development of display technology, the technologies such as MVA, PVA, PSVA go out in succession It is existing, solve the problems, such as response time and visual angle.In recent years, as touch screen becomes the mobile device market mainstream, IPS and FFS The hard panel type display of class has inborn advantage, IPS and FFS class displays that can both use positivity liquid crystal, can also use negativity Liquid crystal, due to being bent electric field present in the class display, positivity liquid crystal is arranged along electric field line direction, curved so as to cause molecule Song, and decline in transmitance;Negative liquid crystal is arranged perpendicular to electric field line direction, thus transmitance can be substantially improved, and be current It promotes transmitance, reduce backlight power consumption the best way.But response time problem existing for negative liquid crystal is the weight currently encountered Hang-up, the FFS display response times slow 50% or more using the FFS displays of negative liquid crystal relative to positivity liquid crystal. Therefore, how to promote the response time of negative liquid crystal becomes current key problem.
Specifically, the response time of liquid crystal display, (d was thickness of liquid crystal layer, and γ 1 is depending on " (d^2 γ 1)/K " _ eff Liquid crystal rotary viscosity, Keff are effective elastic constant), therefore, rotary viscosity is reduced, thickness of liquid crystal layer is reduced and promotes elasticity often Number can achieve the purpose that improve the response time, and thickness of liquid crystal layer depends on the design of liquid crystal display;For liquid crystal combination Object, reduces rotary viscosity and thickness of liquid crystal is most effective.
Liquid-crystal composition provided by the present invention has low rotary viscosity, can be effectively reduced the response of liquid crystal display Time.
Invention content
The purpose of the present invention is overcoming the deficiencies of existing technologies, a kind of liquid crystal group containing fluoroethoxy compound is provided Object is closed, wherein including the compound representated by least one general formula I and the compound representated by least one general formula II.
The general formula I is specially:
In the general formula I, R1Represent C1~C12Straight chained alkyl, unbranched alkoxy or C2~C12Straight-chain alkenyl;Ring A1Choosing From with lower structure:
The general formula II is specially:
In the general formula II, R2,R3C is represented each independently1~C12Straight chained alkyl, unbranched alkoxy or C2~C12's Straight-chain alkenyl;Z1Representation methoxy or ethylidene.
Compound representated by general formula I provided by the invention is to contain 2,3- difluorobenzenes structure and end fluoro ethoxy alkane The liquid-crystal compounds of base, such compound have larger negative dielectric anisotropic and high clearing point.Liquid provided by the invention In crystal composite, the sum of each liquid crystal components are 100%.The content of compound in the composition described in general formula I is preferably 5~ 70%, more preferably 10~60%, 15~57%, 30~60%, 30~57%, 10~45%, 15~38%, 10~50%, 15~46%, 20~60%, 23~60%, 10~45%, 15~37%, 35~60%, 37~57%, 30~60%, 32~ 57%, 10~60%, 35~60%, 15~47%, 38~57% or 32~34%.
Preferably, the compound representated by general formula I is selected from the one or more of the compound representated by Formulas I A~Formulas I B:
In the IA~IB, R1Represent C1~C7Straight chained alkyl, C2~C7Straight-chain alkenyl;Preferably C1~C5Straight chain Alkyl or C2~C5Straight-chain alkenyl.
As the preferred embodiment of the present invention, the compound representated by general formula I is a kind of in Formulas I A1~IA8, IB1~IB8 Or it is several:
Compound representated by general formula II provided by the present invention is the liquid-crystalization that two rings have bis- fluoro- 1,4- phenyl of 2,3- Object is closed, such compound has big dielectric anisotropy, low rotary viscosity and excellent intersolubility.Liquid provided by the invention In crystal composite, the sum of each liquid crystal components are 100%.The content of compound in the composition described in general formula II is preferably 1~ 40%, more preferably 5~35%, 10~28%, 10~30%, 11~24%, 8~35%, 8~20%, 10~20%, 15~ 35%, 15~28%, 8~35%, 15~24%, 10~26%, 15~23%, 8~30%, 15~26% or 19~24%.
Preferably, compounds of formula II provided by the present invention is one or more in IIA and IIB:
In described IIA, IIB, R2Represent C1~C7Straight chained alkyl or C2~C7Straight-chain alkenyl, preferably C1~C5It is straight Alkyl group or C2~C5Straight-chain alkenyl;R3Represent C1~C7Straight chained alkyl or unbranched alkoxy, preferably C1~C4Straight chain Alkyl or unbranched alkoxy.
As the present invention preferred embodiment, compounds of formula II in IIA1~IIA36, IIB1~IIB24 one Kind is a variety of:
One or more compounds of formula III can also be further included in liquid-crystal composition provided by the present invention. Compound representated by general formula III provided by the invention is twin nuclei, has low rotary viscosity and excellent intersolubility special Point.In liquid-crystal composition provided by the invention, the sum of each liquid crystal components are 100%.Compound described in general formula III is in the composition Content be preferably 5~65%, more preferably 10~55%, 15~53%, 10~50%, 15~47%, 20~55%, 24~ 53%, 25~55%, 27~53%, 15~46%, 20~55%, 10~45%, 15~43%, 10~35%, 15~32%, 15~55%, 19~53%, 15~50%, 19~43%, 15~53% or 24~31%.
The general formula III is specially:
In the general formula III, R4,R5C is represented each independently1~C12Straight chained alkyl, unbranched alkoxy or C2~C12's Straight-chain alkenyl;Ring A2,A3Trans- 1,4- cyclohexyl or 1,4 phenylenes are represented each independently.
Preferably, the compound representated by the general formula III is one or more in IIIA~IIIC:
In the IIIA~IIIC, R4Represent C1~C7Straight chained alkyl, preferably C1~C5Straight chained alkyl;R5Represent C1 ~C7Straight chained alkyl, unbranched alkoxy or C2~C7Straight-chain alkenyl, preferably C1~C5Straight chained alkyl, unbranched alkoxy or C2~C5Straight-chain alkenyl.
As the preferred embodiment of the present invention, the compound representated by general formula III be selected from formula III A1~IIIA34, IIIB1~ The one or more of compound representated by IIIB24, IIIC1~IIIC24:
Liquid-crystal composition provided by the present invention also can further include one or more chemical combination selected from general formula IV structures Object.Compound representated by general formula IV is nonpolar tricyclic compound, such monomer has high clearing point and big elasticity often Number is conducive to the elastic constant for improving liquid-crystal composition.In liquid-crystal composition provided by the invention, the sum of each liquid crystal components are 100%.The content of compound in the composition is preferably 0~35% described in general formula IV, and more preferably 0~30%, 0~25%, 0 ~21%, 1~30%, 7~25%, 0~15%, 0~11%, 5.5~25% or 11%.
The general formula IV is specially:
In the general formula IV, R6,R7C is represented each independently1~C12Straight chained alkyl, wherein one or more are non-conterminous CH2It can be replaced by O or CH=CH;Ring A4Selected from lower structure:
Preferably, the compound representated by general formula IV is selected from the one or more of compound described in formula IV A~IVC:
In the IVA~IVC, R6Represent C2~C10Straight chained alkyl or straight-chain alkenyl, preferably C2~C5Straight chained alkyl Or straight-chain alkenyl;R7Represent C1~C8Straight chained alkyl, preferably C1~C5Straight chained alkyl.
As the preferred embodiment of the present invention, compound representated by general formula IV be selected from IVA1~IVA18, IVB1~IVB22, It is one or more in IVC1~IVC30 structures:
Liquid-crystal composition provided by the present invention also can further include one or more selected from compounds of formula V.It is logical Compound representated by Formula V is terphenyl compounds, such compound has big optical anisotropy, can effectively promote liquid crystal The optical anisotropy of composition.In liquid-crystal composition provided by the invention, the sum of each liquid crystal components are 100%.Described in general formula V The content of compound in the composition is preferably 0~30%, and more preferably 0~20%, 0~15%, 0~11%, 1~20%, 5 ~15% or 8~11%.
The general formula V is specially:
In the general formula V, R8Represent C1~C12Straight chained alkyl or C2~C12Straight-chain alkenyl;R9Represent F, C1~C12's Straight chained alkyl, unbranched alkoxy or C2~C12Straight-chain alkenyl;L1,L2,L3H or F, preferably L are represented each independently1,L2,L3No It is H simultaneously.
Preferably, compounds of formula V is one or more in VA~VD;
In the VA~VD, R8Represent C1~C7Straight chained alkyl or C2~C7Straight-chain alkenyl, preferably C1~C5It is straight Alkyl group or C2~C5Straight-chain alkenyl;R9Represent C1~C7Straight chained alkyl, unbranched alkoxy or C2~C7Straight-chain alkenyl, it is excellent It is selected as C1~C5Straight chained alkyl, unbranched alkoxy or C2~C5Straight-chain alkenyl.
As the preferred embodiment of the present invention, the compound representated by general formula V is selected from Formula V A1~VA4, VB1~VB24, VC1 It is one or more in~VC14, VD1~VD24:
In order to ensure realizing synergistic effect between each component, the resultant effect of the liquid crystal material is improved, the present invention is into one It walks and the dosage of the middle each component of the liquid crystal material is carried out preferably.
For specific, liquid-crystal composition provided by the present invention includes following components:
Compound representated by (1) 5~70% general formula I;
Compound representated by (2) 1~40% general formula II;
Compound representated by (3) 5~65% general formula IIIs;
Compound representated by (4) 0~35% general formula IV;
Compound representated by (5) 0~30% general formula V.
Preferably, the liquid-crystal composition includes following components:
Compound representated by (1) 10~60% general formula I;
Compound representated by (2) 5~35% general formula II;
Compound representated by (3) 10~55% general formula IIIs;
Compound representated by (4) 0~30% general formula IV;
Compound representated by (5) 0~20% general formula V.
It is highly preferred that the liquid-crystal composition includes following components:
Compound representated by (1) 15~57% general formula I;
Compound representated by (2) 10~28% general formula II;
Compound representated by (3) 15~53% general formula IIIs;
Compound representated by (4) 0~25% general formula IV;
Compound representated by (5) 0~15% general formula V.
Preferably, the liquid-crystal composition includes following components:
Compound representated by (1) 30~60% general formula I;
Compound representated by (2) 10~30% general formula II;
Compound representated by (3) 10~50% general formula IIIs;
Compound representated by (4) 0~25% general formula IV;
Compound representated by (5) 0~20% general formula V.
It is highly preferred that the liquid-crystal composition includes following components:
Compound representated by (1) 30~57% general formula I;
Compound representated by (2) 11~24% general formula II;
Compound representated by (3) 15~47% general formula IIIs;
Compound representated by (4) 0~21% general formula IV;
Compound representated by (5) 0~15% general formula V.
Preferably, the liquid-crystal composition includes following components:
Compound representated by (1) 10~45% general formula I;
Compound representated by (2) 8~35% general formula II;
Compound representated by (3) 20~55% general formula IIIs;
Compound representated by (4) 0~30% general formula IV;
Compound representated by (5) 0~20% general formula V.
It is highly preferred that the liquid-crystal composition includes following components:
Compound representated by (1) 15~38% general formula I;
Compound representated by (2) 10~28% general formula II;
Compound representated by (3) 24~53% general formula IIIs;
Compound representated by (4) 0~25% general formula IV;
Compound representated by (5) 0~15% general formula V.
Preferably, the liquid-crystal composition includes following components:
Compound representated by (1) 10~50% general formula I;
Compound representated by (2) 8~20% general formula II;
Compound representated by (3) 25~55% general formula IIIs;
Compound representated by (4) 0~30% general formula IV;
Compound representated by (5) 0~20% general formula V.
It is highly preferred that the liquid-crystal composition includes following components:
Compound representated by (1) 15~46% general formula I;
Compound representated by (2) 10~20% general formula II;
Compound representated by (3) 27~53% general formula IIIs;
Compound representated by (4) 0~25% general formula IV;
Compound representated by (5) 0~15% general formula V.
Preferably, the liquid-crystal composition includes following components:
Compound representated by (1) 20~60% general formula I;
Compound representated by (2) 15~35% general formula II;
Compound representated by (3) 10~50% general formula IIIs;
Compound representated by (4) 0~25% general formula IV;
Compound representated by (5) 0~20% general formula V.
It is highly preferred that the liquid-crystal composition includes following components:
Compound representated by (1) 23~60% general formula I;
Compound representated by (2) 15~28% general formula II;
Compound representated by (3) 15~46% general formula IIIs;
Compound representated by (4) 0~21% general formula IV;
Compound representated by (5) 0~15% general formula V.
Preferably, the liquid-crystal composition includes following components:
Compound representated by (1) 10~45% general formula I;
Compound representated by (2) 8~35% general formula II;
Compound representated by (3) 20~55% general formula IIIs;
Compound representated by (4) 1~30% general formula IV;
Compound representated by (5) 0~15% general formula V.
It is highly preferred that the liquid-crystal composition includes following components:
Compound representated by (1) 15~37% general formula I;
Compound representated by (2) 10~28% general formula II;
Compound representated by (3) 24~53% general formula IIIs;
Compound representated by (4) 7~25% general formula IV;
Compound representated by (5) 0~11% general formula V.
Preferably, the liquid-crystal composition includes following components:
Compound representated by (1) 35~60% general formula I;
Compound representated by (2) 10~30% general formula II;
Compound representated by (3) 10~45% general formula IIIs;
Compound representated by (4) 0~20% general formula V.
It is highly preferred that the liquid-crystal composition includes following components:
Compound representated by (1) 37~57% general formula I;
Compound representated by (2) 15~24% general formula II;
Compound representated by (3) 15~43% general formula IIIs;
Compound representated by (4) 0~15% general formula V.
Preferably, the liquid-crystal composition includes following components:
Compound representated by (1) 30~60% general formula I;
Compound representated by (2) 10~26% general formula II;
Compound representated by (3) 10~35% general formula IIIs;
Compound representated by (4) 0~15% general formula IV;
Compound representated by (5) 1~20% general formula V.
It is highly preferred that the liquid-crystal composition includes following components:
Compound representated by (1) 32~57% general formula I;
Compound representated by (2) 15~23% general formula II;
Compound representated by (3) 15~32% general formula IIIs;
Compound representated by (4) 0~11% general formula IV;
Compound representated by (5) 5~15% general formula V.
Preferably, the liquid-crystal composition includes following components:
Compound representated by (1) 10~60% general formula I;
Compound representated by (2) 8~30% general formula II;
Compound representated by (3) 15~55% general formula IIIs;
Compound representated by (4) 0~30% general formula IV.
It is highly preferred that the liquid-crystal composition includes following components:
Compound representated by (1) 15~57% general formula I;
Compound representated by (2) 10~28% general formula II;
Compound representated by (3) 19~53% general formula IIIs;
Compound representated by (4) 0~25% general formula IV.
Preferably, the liquid-crystal composition includes following components:
Compound representated by (1) 35~60% general formula I;
Compound representated by (2) 15~26% general formula II;
Compound representated by (3) 15~50% general formula IIIs.
It is highly preferred that the liquid-crystal composition includes following components:
Compound representated by (1) 37~57% general formula I;
Compound representated by (2) 19~24% general formula II;
Compound representated by (3) 19~43% general formula IIIs.
As the preferred embodiment of the present invention, the liquid-crystal composition includes following components:
Compound representated by (1) 15~57% general formula I;
Compound representated by (2) 10~28% general formula II;
Compound representated by (3) 15~53% general formula IIIs;
Compound representated by (4) 0~25% general formula IV;
Compound representated by (5) 0~15% general formula V.
Or, the liquid-crystal composition includes following components:
Compound representated by (1) 37~57% general formula I;
Compound representated by (2) 19~24% general formula II;
Compound representated by (3) 19~43% general formula IIIs.
Or, the liquid-crystal composition includes following components:
Compound representated by (1) 15~47% general formula I;
Compound representated by (2) 10~28% general formula II;
Compound representated by (3) 27~53% general formula IIIs;
Compound representated by (4) 5.5~25% general formula IV.
Or, the liquid-crystal composition includes following components:
Compound representated by (1) 38~57% general formula I;
Compound representated by (2) 15~23% general formula II;
Compound representated by (3) 15~32% general formula IIIs;
Compound representated by (4) 5~15% general formula V.
Or, the liquid-crystal composition includes following components:
Compound representated by (1) 32~34% general formula I;
Compound representated by (2) 15~23% general formula II;
Compound representated by (3) 24~31% general formula IIIs;
Compound representated by (4) 11% general formula IV;
Compound representated by (5) 8~11% general formula V.
Compounds of formula I provided by the present invention is that tricyclic contains 2,3- difluorobenzene class formation compounds, which is Negative dielectric anisotropic liquid crystal compound, the present invention uses fluoroethoxy structure in end, by the study found that being taken using fluorine After ethyoxyl, the negative dielectric anisotropic of the structure is increased dramatically, and test result is as follows:
The above comparison is it can be found that the compound of proposed fluoroethoxy has big negative dielectric respectively to different Property, the negative dielectric anisotropic of liquid-crystal composition can be effectively promoted, reducing polar monomer uses, and increases low viscosity monomer and uses, The rotary viscosity of reduction system promotes the response time;The liquid-crystal compounds that general formula II is provided is that two rings contain Isosorbide-5-Nitrae-difluorobenzene Compound, such compound have big dielectric anisotropy, low rotary viscosity and excellent intersolubility;General formula III institute The compound represented is twin nuclei, has the characteristics that low rotary viscosity and excellent intersolubility, is that fast-response liquid crystal display must Indispensable component, the compound representated by general formula IV are nonpolar tricyclic compound, such monomer have high clearing point and Big elastic constant is conducive to the elastic constant for improving liquid-crystal composition;Compound representated by general formula V is terphenyl chemical combination Object, such compound have big optical anisotropy, can effectively promote the optical anisotropy of liquid-crystal composition.
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 be prepared by the method for mixing different component at high temperature and being soluble in one another, 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;Or it is of the present invention Liquid-crystal composition can be prepared conventionally, and the smaller component of wherein content is such as dissolved in content at a higher temperature In larger key 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 of the present invention has low rotary viscosity, good low temperature intersolubility and fast response speed, The fast-response liquid crystal display that can be used for plurality of display modes, in the VA such as VA/MVA/PVA/PSVA class displays and IPS or Use in FFS mode display can be obviously improved liquid crystal display display effect, for promoted liquid crystal display response when Between it is especially effective.
Specific implementation mode
The following examples are used to illustrate the present invention, but are not intended to limit the scope of 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);△ ε represent dielectric anisotropy (25 DEG C, 1000Hz);V10Threshold voltage is represented, is in relative permeability Character voltage (V, 25 DEG C) when changing 10%;γ 1 represents rotary viscosity (mPa.s, 25 DEG C);Cp represents the clear of liquid-crystal composition Bright spot (DEG C);K11,K22,K33Respectively represent splay, distortion and bend elastic constant (pN, 25 DEG C).
In following embodiment, unit structure code shown in table 1 indicates 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:3C1OWO2F
It is expressed as:3PGIWO2
In following embodiment, the preparation of liquid-crystal composition is all made of heat of solution method, includes the following steps:It 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 weighed successively to low sequence, heating stirring makes each component 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
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
Embodiment 17
Table 18:The weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 18
Table 19:The weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 19
Table 20:The weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 20
Table 21:The weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 21
Table 22:The weight percent of each component when performance parameter in liquid-crystal composition
Comparative example 1
Table 23:The weight percent of each component when performance parameter in liquid-crystal composition
Compared with embodiment 1 is summarized with each performance parameter value of 1 gained liquid-crystal composition of comparative example, referring to table 24.
Table 24:The performance parameter of liquid-crystal composition compares
△n △ε Cp γ1 K11 K22 K33
Embodiment 1 0.100 -3.1 76 75 14.4 7.2 14.6
Comparative example 1 0.097 -3.1 76 83 14.2 7.1 14.9
Known to relatively:Compared with comparative example 1, the liquid-crystal composition that embodiment 1 provides has low rotary viscosity, that is, has There is the faster response time.
As seen from the above embodiment, liquid-crystal composition provided by the present invention has low viscosity, high resistivity, suitable light Anisotropy, good low temperature intersolubility, big elastic constant and excellent photostability and thermal stability are learned, liquid can be reduced The response time of crystal display, to solve the problems, such as that liquid crystal display response speed is slow.Therefore, liquid crystal provided by the present invention Composition is suitable for VA types liquid crystal display device and the IPS/FFS type liquid crystal display devices such as VA/MVA/PVA/PSVA.
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 containing fluoroethoxy compound, which is characterized in that representated by least one general formula I Compound and at least one general formula II representated by compound;
The general formula I is specially:
In the general formula I, R1Represent C1~C12Straight chained alkyl, unbranched alkoxy or C2~C12Straight-chain alkenyl;Ring A1Selected from Lower structure:
The general formula II is specially:
In the general formula II, R2,R3C is represented each independently1~C12Straight chained alkyl, unbranched alkoxy or C2~C12Straight chain Alkenyl;Z1Representation methoxy or ethylidene.
2. composition according to claim 1, which is characterized in that the compound representated by general formula I is selected from Formulas I A or IB institutes The one or more of the compound of representative:
In the IA~IB, R1Represent C1~C7Straight chained alkyl, C2~C7Straight-chain alkenyl;
Preferably, the compound representated by general formula I is one or more of in Formulas I A1~IA8, IB1~IB8:
3. composition according to claim 1 or 2, which is characterized in that compounds of formula II is in IIA and IIB It is one or more:
In described IIA, IIB, R2Represent C1~C7Straight chained alkyl or C2~C7Straight-chain alkenyl;R3Represent C1~C7Straight chain alkane Base or unbranched alkoxy;
Preferably, compounds of formula II is one or more in IIA1~IIA36, IIB1~IIB24:
4. according to the composition described in claims 1 to 3 any one, which is characterized in that also include one or more general formula IIIs Compound;The general formula III is specially:
In the general formula III, R4,R5C is represented each independently1~C12Straight chained alkyl, unbranched alkoxy or C2~C12Straight chain Alkenyl;Ring A2,A3Trans- 1,4- cyclohexyl or 1,4 phenylenes are represented each independently;
Preferably, the compound representated by the general formula III is one or more in IIIA~IIIC:
In the IIIA~IIIC, R4Represent C1~C7Straight chained alkyl;R5Represent C1~C7Straight chained alkyl, unbranched alkoxy or C2~C7Straight-chain alkenyl;
It is highly preferred that compound representated by general formula III be selected from formula III A1~IIIA34, IIIB1~IIIB24, IIIC1~ The one or more of compound representated by IIIC24:
5. according to the composition described in Claims 1 to 4 any one, which is characterized in that also include one or more selected from logical The compound of formula IV structure;The general formula IV is specially:
In the general formula IV, R6,R7C is represented each independently1~C12Straight chained alkyl, wherein one or more non-conterminous CH2 It can be replaced by O or CH=CH;Ring A4Selected from lower structure:
Preferably, the compound representated by general formula IV is selected from the one or more of compound described in formula IV A~IVC:
In the IVA~IVC, R6Represent C2~C10Straight chained alkyl or straight-chain alkenyl;R7Represent C1~C8Straight chained alkyl;
It is highly preferred that compound representated by general formula IV is in IVA1~IVA18, IVB1~IVB22, IVC1~IVC30 structures It is one or more:
6. according to the composition described in Claims 1 to 5 any one, which is characterized in that also include one or more selected from logical The compound of Formula V;The general formula V is specially:
In the general formula V, R8Represent C1~C12Straight chained alkyl or C2~C12Straight-chain alkenyl;R9Represent F, C1~C12Straight chain Alkyl, unbranched alkoxy or C2~C12Straight-chain alkenyl;L1,L2,L3H or F is represented each independently;
Preferably, compounds of formula V is one or more in VA~VD;
In the VA~VD, R8Represent C1~C7Straight chained alkyl or C2~C7Straight-chain alkenyl;R9Represent C1~C7Straight chain alkane Base, unbranched alkoxy or C2~C7Straight-chain alkenyl;
It is highly preferred that the compound representated by general formula V is selected from Formula V A1~VA4, VB1~VB24, VC1~VC14, VD1~VD24 In it is one or more:
7. according to the composition described in claim 1~6 any one, which is characterized in that the liquid-crystal composition provided includes Following components:
Compound representated by (1) 5~70% general formula I;
Compound representated by (2) 1~40% general formula II;
Compound representated by (3) 5~65% general formula IIIs;
Compound representated by (4) 0~35% general formula IV;
Compound representated by (5) 0~30% general formula V;
Preferably, the liquid-crystal composition includes following components:
Compound representated by (1) 10~60% general formula I;
Compound representated by (2) 5~35% general formula II;
Compound representated by (3) 10~55% general formula IIIs;
Compound representated by (4) 0~30% general formula IV;
Compound representated by (5) 0~20% general formula V;
It is highly preferred that the liquid-crystal composition includes following components:
Compound representated by (1) 15~57% general formula I;
Compound representated by (2) 10~28% general formula II;
Compound representated by (3) 15~53% general formula IIIs;
Compound representated by (4) 0~25% general formula IV;
Compound representated by (5) 0~15% general formula V;
Preferably, the liquid-crystal composition includes following components:
Compound representated by (1) 30~60% general formula I;
Compound representated by (2) 10~30% general formula II;
Compound representated by (3) 10~50% general formula IIIs;
Compound representated by (4) 0~25% general formula IV;
Compound representated by (5) 0~20% general formula V;
It is highly preferred that the liquid-crystal composition includes following components:
Compound representated by (1) 30~57% general formula I;
Compound representated by (2) 11~24% general formula II;
Compound representated by (3) 15~47% general formula IIIs;
Compound representated by (4) 0~21% general formula IV;
Compound representated by (5) 0~15% general formula V;
Preferably, the liquid-crystal composition includes following components:
Compound representated by (1) 10~45% general formula I;
Compound representated by (2) 8~35% general formula II;
Compound representated by (3) 20~55% general formula IIIs;
Compound representated by (4) 0~30% general formula IV;
Compound representated by (5) 0~20% general formula V;
It is highly preferred that the liquid-crystal composition includes following components:
Compound representated by (1) 15~38% general formula I;
Compound representated by (2) 10~28% general formula II;
Compound representated by (3) 24~53% general formula IIIs;
Compound representated by (4) 0~25% general formula IV;
Compound representated by (5) 0~15% general formula V;
Preferably, the liquid-crystal composition includes following components:
Compound representated by (1) 10~50% general formula I;
Compound representated by (2) 8~20% general formula II;
Compound representated by (3) 25~55% general formula IIIs;
Compound representated by (4) 0~30% general formula IV;
Compound representated by (5) 0~20% general formula V;
It is highly preferred that the liquid-crystal composition includes following components:
Compound representated by (1) 15~46% general formula I;
Compound representated by (2) 10~20% general formula II;
Compound representated by (3) 27~53% general formula IIIs;
Compound representated by (4) 0~25% general formula IV;
Compound representated by (5) 0~15% general formula V;
Preferably, the liquid-crystal composition includes following components:
Compound representated by (1) 20~60% general formula I;
Compound representated by (2) 15~35% general formula II;
Compound representated by (3) 10~50% general formula IIIs;
Compound representated by (4) 0~25% general formula IV;
Compound representated by (5) 0~20% general formula V;
It is highly preferred that the liquid-crystal composition includes following components:
Compound representated by (1) 23~60% general formula I;
Compound representated by (2) 15~28% general formula II;
Compound representated by (3) 15~46% general formula IIIs;
Compound representated by (4) 0~21% general formula IV;
Compound representated by (5) 0~15% general formula V;
Preferably, the liquid-crystal composition includes following components:
Compound representated by (1) 10~45% general formula I;
Compound representated by (2) 8~35% general formula II;
Compound representated by (3) 20~55% general formula IIIs;
Compound representated by (4) 1~30% general formula IV;
Compound representated by (5) 0~15% general formula V;
It is highly preferred that the liquid-crystal composition includes following components:
Compound representated by (1) 15~37% general formula I;
Compound representated by (2) 10~28% general formula II;
Compound representated by (3) 24~53% general formula IIIs;
Compound representated by (4) 7~25% general formula IV;
Compound representated by (5) 0~11% general formula V;
Preferably, the liquid-crystal composition includes following components:
Compound representated by (1) 35~60% general formula I;
Compound representated by (2) 10~30% general formula II;
Compound representated by (3) 10~45% general formula IIIs;
Compound representated by (4) 0~20% general formula V;
It is highly preferred that the liquid-crystal composition includes following components:
Compound representated by (1) 37~57% general formula I;
Compound representated by (2) 15~24% general formula II;
Compound representated by (3) 15~43% general formula IIIs;
Compound representated by (4) 0~15% general formula V;
Preferably, the liquid-crystal composition includes following components:
Compound representated by (1) 30~60% general formula I;
Compound representated by (2) 10~26% general formula II;
Compound representated by (3) 10~35% general formula IIIs;
Compound representated by (4) 0~15% general formula IV;
Compound representated by (5) 1~20% general formula V;
It is highly preferred that the liquid-crystal composition includes following components:
Compound representated by (1) 32~57% general formula I;
Compound representated by (2) 15~23% general formula II;
Compound representated by (3) 15~32% general formula IIIs;
Compound representated by (4) 0~11% general formula IV;
Compound representated by (5) 5~15% general formula V;
Preferably, the liquid-crystal composition includes following components:
Compound representated by (1) 10~60% general formula I;
Compound representated by (2) 8~30% general formula II;
Compound representated by (3) 15~55% general formula IIIs;
Compound representated by (4) 0~30% general formula IV;
It is highly preferred that the liquid-crystal composition includes following components:
Compound representated by (1) 15~57% general formula I;
Compound representated by (2) 10~28% general formula II;
Compound representated by (3) 19~53% general formula IIIs;
Compound representated by (4) 0~25% general formula IV;
Preferably, the liquid-crystal composition includes following components:
Compound representated by (1) 35~60% general formula I;
Compound representated by (2) 15~26% general formula II;
Compound representated by (3) 15~50% general formula IIIs;
It is highly preferred that the liquid-crystal composition includes following components:
Compound representated by (1) 37~57% general formula I;
Compound representated by (2) 19~24% general formula II;
Compound representated by (3) 19~43% general formula IIIs.
8. composition according to claim 7, which is characterized in that the liquid-crystal composition includes following components:
Compound representated by (1) 15~57% general formula I;
Compound representated by (2) 10~28% general formula II;
Compound representated by (3) 15~53% general formula IIIs;
Compound representated by (4) 0~25% general formula IV;
Compound representated by (5) 0~15% general formula V;
Or, the liquid-crystal composition includes following components:
Compound representated by (1) 37~57% general formula I;
Compound representated by (2) 19~24% general formula II;
Compound representated by (3) 19~43% general formula IIIs;
Or, the liquid-crystal composition includes following components:
Compound representated by (1) 15~47% general formula I;
Compound representated by (2) 10~28% general formula II;
Compound representated by (3) 27~53% general formula IIIs;
Compound representated by (4) 5.5~25% general formula IV;
Or, the liquid-crystal composition includes following components:
Compound representated by (1) 38~57% general formula I;
Compound representated by (2) 15~23% general formula II;
Compound representated by (3) 15~32% general formula IIIs;
Compound representated by (4) 5~15% general formula V;
Or, the liquid-crystal composition includes following components:
Compound representated by (1) 32~34% general formula I;
Compound representated by (2) 15~23% general formula II;
Compound representated by (3) 24~31% general formula IIIs;
Compound representated by (4) 11% general formula IV;
Compound representated by (5) 8~11% general formula V.
9. composition according to claim 7 or 8, which is characterized in that in the liquid-crystal composition, the quality hundred of each component It is 100% to divide the sum of ratio.
10. application of the liquid-crystal composition in liquid crystal display device described in claim 1~9 any one, preferably in fast-response Application in liquid crystal display device, more preferably in the VA such as VA/MVA/PVA/PSVA class displays, IPS mode displays or FFS moulds Application in formula display.
CN201710217883.5A 2017-04-05 2017-04-05 A kind of liquid-crystal composition containing fluoroethoxy compound and its application Pending CN108690637A (en)

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Application publication date: 20181023