CN108690635A - A kind of negative dielectric anisotropy liquid crystal composition and its application - Google Patents
A kind of negative dielectric anisotropy liquid crystal composition and its application Download PDFInfo
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Abstract
The present invention relates to a kind of negative dielectric anisotropy liquid crystal composition, the compound representated by least one general formula I and the compound representated by least one general formula II are included in the composition;Wherein, compounds of formula I has big negative dielectric anisotropic, can effectively promote the negative dielectric anisotropic of liquid-crystal composition, reduces polar monomer and uses, and increases low viscosity monomer and uses, reduce the rotary viscosity of system, promotes the response time;Compound representated by general formula II has larger negative dielectric anisotropic and excellent intersolubility.Liquid-crystal composition provided by the present invention has low rotary viscosity, good low temperature intersolubility and fast response time, it is highly effective for the response time for improving liquid crystal display suitable for the VA classes liquid crystal display device such as VA/MVA/PVA/PSVA and IPS, FFS mode liquid crystal display device.
Description
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 negative dielectric anisotropy, more specifically in liquid-crystal composition provided by the present invention
Liquid-crystal compounds containing fluoroethoxy structure.Belong to liquid crystal material and its application field.
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 liquid depending on (d^2 γ 1)/Keff
Brilliant rotary viscosity, Keff are effective elastic constant), therefore, rotary viscosity is reduced, thickness of liquid crystal layer is reduced and promotes elastic constant
It can achieve the purpose that improve the response time, thickness of liquid crystal layer depends on the design of liquid crystal display;For liquid-crystal composition,
It 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 negative dielectric anisotropy liquid crystal composition is provided.Institute
It states in composition comprising 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;Z1Generation
Table-CH2O- or-CH2CH2-。
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;Ring A1Represent trans- 1,4- cyclohexyl or 1,4- phenylenes.
Compound representated by general formula I provided by the invention is to contain 2,3- difluorobenzenes and the liquid of fluoroethoxy structure
Brilliant compound, such compound have larger negative dielectric anisotropic, can effectively be promoted the negative dielectric of liquid-crystal composition respectively to
The opposite sex reduces polar monomer and uses, and increases low viscosity monomer and uses, reduce the rotary viscosity of system, promotes the response time.This hair
In the liquid-crystal composition of bright offer, the sum of each liquid crystal components are 100%;The content of compound in the composition described in general formula I is excellent
It is selected as 5~70%, more preferably 8~60%, 10~57%, 8~35%, 10~35%, 30~65%, 30~57%, 15~
65%, 19~57%, 8~45%, 10~42%, 15~60%, 20~57%, 8~40%, 10~37%, 10~42%, 13
~60%, 16~57%, 13~45%, 16~39% or 57%.
Preferably, the compound representated by general formula I is selected from the one or more of the compound representated by Formulas I A~IB:
In the IA~IB, R1Represent C1~C7Straight chained alkyl or C2~C7Straight-chain alkenyl;Preferably C1~C5It is straight
Alkyl group or C2~C5Straight-chain alkenyl.
As the preferred embodiment of the present invention, compound representated by general formula I in Formulas I A1~IA8, IB1~IB8 one
Kind 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 larger negative dielectric anisotropic and excellent intersolubility.Liquid crystal combination provided by the invention
In object, the sum of each liquid crystal components are 100%;The content of compound in the composition is preferably 5~40% described in general formula II, more excellent
It is selected as 8~35%, 10~30%, 10~35%, 15~27%, 15~35%, 15~30%, 8~20%, 10~20%, 15
~29%, 8~30%, 10~24%, 8~26%, 10~23%, 23~24% or 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 alkoxy, preferably C1~C5Straight chained alkyl
Or alkoxy.
As the present invention preferred embodiment, compounds of formula II in IIA1~IIA32, IIB1~IIB28 one
Kind is a variety of:
Liquid-crystal composition provided by the present invention can also further include one or more compounds of formula III.This
The compound invented representated by the general formula III provided is twin nuclei, has the characteristics that low rotary viscosity and excellent intersolubility.
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 is preferably 5~65%, more preferably 10~55%, 13~53%, 15~55%, 19~53%, 10~40%, 13~
36%, 10~50%, 13~46%, 20~55%, 22~53%, 10~35%, 13~35%, 30~55%, 30~53%,
13~50%, 20~55%, 22~50%, 13~15% or 19%.
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, ring 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.The compound of general formula IV structures is nonpolar tricyclic compound, such monomer has high clearing point and big elastic constant,
Be conducive to improve the elastic constant of 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 0~45% described in general formula IV, and more preferably 0~45%, 0~30%, 0
~35%, 0~25%, 0~22%, 0~29%, 5~30%, 4~30%, 1~35%, 1~25% or 4~22%.
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 one or more in formula IV A~formula IV C:
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 formula IV A1~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 has big optical anisotropy, and the dielectric anisotropy for promoting liquid-crystal composition has very much
Effect.In liquid-crystal composition provided by the invention, the sum of each liquid crystal components are 100%;Compound described in general formula V is in the composition
Content is preferably 0~30%, more preferably 0~20%, 0~17%, 0~15%, 1~20%, 5~17% or 5~6%.
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 C2~C12Straight-chain alkenyl;L1,L2,L3H or F, preferably L are represented each independently1,L2,L3It is different
When be F.
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.
Specifically, liquid-crystal composition provided by the present invention includes following components:Representated by (1) 5~70% general formula I
Compound;Compound representated by (2) 5~40% general formula II;Compound representated by (3) 5~65% general formula IIIs;(4) 0~
Compound representated by 45% general formula IV;Compound representated by (5) 0~30% general formula V.
Preferably, the liquid-crystal composition includes following components:Compound representated by (1) 8~60% general formula I;(2)8
Compound representated by~35% general formula II;Compound representated by (3) 10~55% general formula IIIs;(4) 0~35% general formula IV
Representative compound;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) 10~57% general formula I;
Compound representated by (2) 10~30% general formula II;Compound representated by (3) 13~53% general formula IIIs;(4) 0~30% is logical
Compound representated by formula IV;Compound representated by (5) 0~17% general formula V.
Preferably, the liquid-crystal composition includes following components:Compound representated by (1) 8~35% general formula I;(2)8
Compound representated by~35% general formula II;Compound representated by (3) 15~55% general formula IIIs;(4) 0~35% general formula IV
Representative compound;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) 10~35% general formula I;
Compound representated by (2) 10~30% general formula II;Compound representated by (3) 19~53% general formula IIIs;(4) 5~30% is logical
Compound representated by formula IV;Compound representated by (5) 0~17% general formula V.
Preferably, the liquid-crystal composition includes following components:Compound representated by (1) 30~65% general formula I;(2)
Compound representated by 10~35% general formula II;Compound representated by (3) 10~40% general formula IIIs;(4) 0~25% general formulas
Compound representated by 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) 15~27% general formula II;Compound representated by (3) 13~36% general formula IIIs;(4) 0~22 general formulas
Compound representated by IV;Compound representated by (5) 0~15% general formula V.
Preferably, the liquid-crystal composition includes following components:Compound representated by (1) 15~65% general formula I;(2)
Compound representated by 15~35% general formula II;Compound representated by (3) 10~50% general formula IIIs;(4) 0~35% general formulas
Compound representated by 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) 19~57% general formula I;
Compound representated by (2) 15~30% general formula II;Compound representated by (3) 13~46% general formula IIIs;(4) 0~29% is logical
Compound representated by formula IV;Compound representated by (5) 0~15% general formula V.
Preferably, the liquid-crystal composition includes following components:Compound representated by (1) 8~45% general formula I;(2)8
Compound representated by~20% general formula II;Compound representated by (3) 20~55% general formula IIIs;(4) 0~35% general formula IV
Representative compound;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) 10~42% general formula I;
Compound representated by (2) 10~20% general formula II;Compound representated by (3) 22~53% general formula IIIs;(4) 4~30% is logical
Compound representated by formula IV;Compound representated by (5) 0~17% general formula V.
Preferably, the liquid-crystal composition includes following components:Compound representated by (1) 15~60% general formula I;(2)
Compound representated by 10~35% general formula II;Compound representated by (3) 10~35% general formula IIIs;(4) 0~35% general formulas
Compound representated by 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) 20~57% general formula I;
Compound representated by (2) 15~29% general formula II;Compound representated by (3) 13~35% general formula IIIs;(4) 0~29% is logical
Compound representated by formula IV;Compound representated by (5) 0~15% general formula V.
Preferably, the liquid-crystal composition includes following components:Compound representated by (1) 8~40% general formula I;(2)8
Compound representated by~35% general formula II;Compound representated by (3) 30~55% general formula IIIs;(4) 0~35% general formula IV
Representative compound;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) 10~37% general formula I;
Compound representated by (2) 10~30% general formula II;Compound representated by (3) 30~53% general formula IIIs;(4) 4~30% is logical
Compound representated by formula IV;Compound representated by (5) 0~17% general formula V.
Preferably, the liquid-crystal composition includes following components:Compound representated by (1) 8~45% general formula I;(2)8
Compound representated by~35% general formula II;Compound representated by (3) 15~55% general formula IIIs;(4) 1~35% general formula IV
Representative compound;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) 10~42% general formula I;
Compound representated by (2) 10~30% general formula II;Compound representated by (3) 19~53% general formula IIIs;(4) 4~30% is logical
Compound representated by formula IV;Compound representated by (5) 0~17% general formula V.
Preferably, the liquid-crystal composition includes following components:Compound representated by (1) 13~60% general formula I;(2)8
Compound representated by~30% general formula II;Compound representated by (3) 10~55% general formula IIIs;(4) 0~25% general formula IV
Representative compound;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) 16~57% general formula I;
Compound representated by (2) 10~24% general formula II;Compound representated by (3) 13~50% general formula IIIs;(4) 0~22% is logical
Compound representated by formula IV;Compound representated by (5) 5~17% general formula V.
Preferably, the liquid-crystal composition includes following components:Compound representated by (1) 13~45% general formula I;(2)8
Compound representated by~26% general formula II;Compound representated by (3) 20~55% general formula IIIs;(4) 1~25% general formula IV
Representative compound;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) 16~39% general formula I;
Compound representated by (2) 10~23% general formula II;Compound representated by (3) 22~50% general formula IIIs;(4) 4~22% is logical
Compound representated by formula IV;Compound representated by (5) 5~17% general formula V.
As the preferred embodiment of the present invention, the composition includes following components:Representated by (1) 10~57% general formula I
Compound;Compound representated by (2) 10~30% general formula II;Compound representated by (3) 13~53% general formula IIIs;(4)0
Compound representated by~30% general formula IV;Compound representated by (5) 0~17% general formula V.
Or, the composition includes following components:Compound representated by (1) 57% general formula I;(2) 24% general formula II institutes
The compound of representative;Compound representated by (3) 19% general formula IIIs.
Or, the composition includes following components:Compound representated by (1) 10~42% general formula I;(2) 10~30%
Compound representated by general formula II;Compound representated by (3) 19~53% general formula IIIs;Representated by (4) 5~30% general formula IV
Compound.
Or, the composition includes following components:Compound representated by (1) 57% general formula I;(2) 23~24% general formulas
Compound representated by II;Compound representated by (3) 13~15% general formula IIIs;Chemical combination representated by (4) 5~6% general formula V
Object.
Or, the composition includes following components:Compound representated by (1) 16~39% general formula I;(2) 10~23%
Compound representated by general formula II;Compound representated by (3) 22~50% general formula IIIs;Representated by (4) 4~22% general formula IV
Compound;Compound representated by (5) 5~17% 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;Compound representated by general formula II has larger negative dielectric anisotropic
With excellent intersolubility;Compound representated by formula III is twin nuclei, has low rotary viscosity and excellent intersolubility special
Point is the essential component of fast-response liquid crystal display, and the compound representated by general formula IV is nonpolar tricyclic compound, such
Monomer has high clearing point and big elastic constant, is conducive to the elastic constant for improving liquid-crystal composition;Representated by general formula V
Compound has big optical anisotropy, highly effective for the dielectric anisotropy for promoting 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 provided by the present invention has low rotary viscosity, good low temperature intersolubility and fast response
Time is suitable for VA classes liquid crystal display device and IPS, the FFS mode liquid crystal display devices such as VA/MVA/PVA/PSVA.For
The response time for improving liquid crystal display is highly 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:3CC1OWO2F
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
Embodiment 22
Table 23:The weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 23
Table 24:The weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 24
Table 25:The weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 25
Table 26:The weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 26
Table 27:The weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 27
Table 28:The weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 28
Table 29:The weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 29
Table 30:The weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 30
Table 31:The weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 31
Table 32:The weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 32
Table 33:The weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 33
Table 34:The weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 34
Table 35:The weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 35
Table 36:The percentage of each component when performance parameter in liquid-crystal composition
Embodiment 36
Table 37:The weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 37
Table 38:The weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 38
Table 39:The weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 39
Table 40:The weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 40
Table 41:The weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 41
Table 42:The weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 42
Table 43:The weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 43
Table 44:The weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 44
Table 45:The weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 45
Table 46:The weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 46
Table 47:The weight percent of each component when performance parameter in liquid-crystal composition
Comparative example 1
Table 48: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 49.
Table 49:The performance parameter of liquid-crystal composition compares
| △n | △ε | Cp | γ1 | K11 | K22 | K33 | |
| Embodiment 1 | 0.108 | -3.8 | 90 | 81 | 15.0 | 7.5 | 16.3 |
| Comparative example 1 | 0.108 | -3.8 | 90 | 96 | 14.7 | 7.4 | 16.5 |
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 display patterns and IPS the and FFS type TFT 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 negative dielectric anisotropy liquid crystal composition, which is characterized in that include 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;Z1Represent-
CH2O- or-CH2CH2-;
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;Ring A1Represent trans- 1,4- cyclohexyl or 1,4- phenylenes.
2. liquid-crystal composition according to claim 1, which is characterized in that compound representated by general formula I be selected from Formulas I A~
The one or more of compound representated by IB:
In the IA~IB, R1Represent C1~C7Straight chained alkyl or C2~C7Straight-chain alkenyl;
Preferably, the compound representated by general formula I is selected from one or more of Formulas I A1~IA8, IB1~IB8:
3. liquid-crystal composition according to claim 1 or 2, which is characterized in that compounds of formula II is selected from IIA and IIB
In 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 alkoxy;
Preferably, compounds of formula II is one or more in IIA1~IIA32, IIB1~IIB28:
4. the liquid crystal according to claims 1 to 3 any one closes object, which is characterized in that also include one or more general formulas
The compound of III;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, ring 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 liquid-crystal composition described in Claims 1 to 4 any one, which is characterized in that also include one or more choosings
The compound of self-drifting IV structures;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 one or more in formula IV A~formula IV C:
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 selected from formula IV A1~IVA18, IVB1~IVB22, IVC1~IVC30 structures
In it is one or more:
6. according to the liquid-crystal composition described in Claims 1 to 5 any one, which is characterized in that also include one or more choosings
The compound of self-drifting 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 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 liquid-crystal composition described in claim 1~6 any one, which is characterized in that including following components:
Compound representated by (1) 5~70% general formula I;
Compound representated by (2) 5~40% general formula II;
Compound representated by (3) 5~65% general formula IIIs;
Compound representated by (4) 0~45% general formula IV;
Compound representated by (5) 0~30% general formula V;
Preferably, the liquid-crystal composition includes following components:
Compound representated by (1) 8~60% general formula I;
Compound representated by (2) 8~35% general formula II;
Compound representated by (3) 10~55% general formula IIIs;
Compound representated by (4) 0~35% 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) 10~57% general formula I;
Compound representated by (2) 10~30% general formula II;
Compound representated by (3) 13~53% general formula IIIs;
Compound representated by (4) 0~30% general formula IV;
Compound representated by (5) 0~17% general formula V;
Preferably, the liquid-crystal composition includes following components:
Compound representated by (1) 8~35% general formula I;
Compound representated by (2) 8~35% general formula II;
Compound representated by (3) 15~55% general formula IIIs;
Compound representated by (4) 0~35% 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) 10~35% general formula I;
Compound representated by (2) 10~30% general formula II;
Compound representated by (3) 19~53% general formula IIIs;
Compound representated by (4) 5~30% general formula IV;
Compound representated by (5) 0~17% general formula V;
Preferably, the liquid-crystal composition includes following components:
Compound representated by (1) 30~65% general formula I;
Compound representated by (2) 10~35% general formula II;
Compound representated by (3) 10~40% 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) 15~27% general formula II;
Compound representated by (3) 13~36% general formula IIIs;
Compound representated by (4) 0~22% general formula IV;
Compound representated by (5) 0~15% general formula V;
Preferably, the liquid-crystal composition includes following components:
Compound representated by (1) 15~65% 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) 0~35% 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) 19~57% general formula I;
Compound representated by (2) 15~30% general formula II;
Compound representated by (3) 13~46% general formula IIIs;
Compound representated by (4) 0~29% general formula IV;
Compound representated by (5) 0~15% general formula V;
Preferably, the liquid-crystal composition includes following components:
Compound representated by (1) 8~45% general formula I;
Compound representated by (2) 8~20% general formula II;
Compound representated by (3) 20~55% general formula IIIs;
Compound representated by (4) 0~35% 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) 10~42% general formula I;
Compound representated by (2) 10~20% general formula II;
Compound representated by (3) 22~53% general formula IIIs;
Compound representated by (4) 4~30% general formula IV;
Compound representated by (5) 0~17% general formula V;
Preferably, the liquid-crystal composition includes following components:
Compound representated by (1) 15~60% general formula I;
Compound representated by (2) 10~35% general formula II;
Compound representated by (3) 10~35% general formula IIIs;
Compound representated by (4) 0~35% 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) 20~57% general formula I;
Compound representated by (2) 15~29% general formula II;
Compound representated by (3) 13~35% general formula IIIs;
Compound representated by (4) 0~29% general formula IV;
Compound representated by (5) 0~15% general formula V;
Preferably, the liquid-crystal composition includes following components:
Compound representated by (1) 8~40% general formula I;
Compound representated by (2) 8~35% general formula II;
Compound representated by (3) 30~55% general formula IIIs;
Compound representated by (4) 0~35% 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) 10~37% general formula I;
Compound representated by (2) 10~30% general formula II;
Compound representated by (3) 30~53% general formula IIIs;
Compound representated by (4) 4~30% general formula IV;
Compound representated by (5) 0~17% general formula V;
Preferably, the liquid-crystal composition includes following components:
Compound representated by (1) 8~45% general formula I;
Compound representated by (2) 8~35% general formula II;
Compound representated by (3) 15~55% general formula IIIs;
Compound representated by (4) 1~35% 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) 10~42% general formula I;
Compound representated by (2) 10~30% general formula II;
Compound representated by (3) 19~53% general formula IIIs;
Compound representated by (4) 4~30% general formula IV;
Compound representated by (5) 0~17% general formula V;
Preferably, the liquid-crystal composition includes following components:
Compound representated by (1) 13~60% general formula I;
Compound representated by (2) 8~30% general formula II;
Compound representated by (3) 10~55% general formula IIIs;
Compound representated by (4) 0~25% 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) 16~57% general formula I;
Compound representated by (2) 10~24% general formula II;
Compound representated by (3) 13~50% general formula IIIs;
Compound representated by (4) 0~22% general formula IV;
Compound representated by (5) 5~17% general formula V;
Preferably, the liquid-crystal composition includes following components:
Compound representated by (1) 13~45% general formula I;
Compound representated by (2) 8~26% general formula II;
Compound representated by (3) 20~55% general formula IIIs;
Compound representated by (4) 1~25% 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) 16~39% general formula I;
Compound representated by (2) 10~23% general formula II;
Compound representated by (3) 22~50% general formula IIIs;
Compound representated by (4) 4~22% general formula IV;
Compound representated by (5) 5~17% general formula V.
8. liquid-crystal composition according to claim 7, which is characterized in that the liquid-crystal composition includes following components:
Compound representated by (1) 10~57% general formula I;
Compound representated by (2) 10~30% general formula II;
Compound representated by (3) 13~53% general formula IIIs;
Compound representated by (4) 0~30% general formula IV;
Compound representated by (5) 0~17% general formula V;
Or, the composition includes following components:
Compound representated by (1) 57% general formula I;
Compound representated by (2) 24% general formula II;
Compound representated by (3) 19% general formula IIIs;
Or, the composition includes following components:
Compound representated by (1) 10~42% general formula I;
Compound representated by (2) 10~30% general formula II;
Compound representated by (3) 19~53% general formula IIIs;
Compound representated by (4) 5~30% general formula IV;
Or, the composition includes following components:
Compound representated by (1) 57% general formula I;
Compound representated by (2) 23~24% general formula II;
Compound representated by (3) 13~15% general formula IIIs;
Compound representated by (4) 5~6% general formula V;
Or, the composition includes following components:
Compound representated by (1) 16~39% general formula I;
Compound representated by (2) 10~23% general formula II;
Compound representated by (3) 22~50% general formula IIIs;
Compound representated by (4) 4~22% general formula IV;
Compound representated by (5) 5~17% general formula V.
9. liquid-crystal composition according to claim 7 or 8, which is characterized in that the matter of each component in the liquid-crystal composition
It is 100% to measure the sum of percentage.
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 classes liquid crystal display device such as VA/MVA/PVA/PSVA and IPS, FFS mode
Application in liquid crystal display device.
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