CN108728114A - Liquid crystal media and its application - Google Patents
Liquid crystal media and its application Download PDFInfo
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- CN108728114A CN108728114A CN201710262318.0A CN201710262318A CN108728114A CN 108728114 A CN108728114 A CN 108728114A CN 201710262318 A CN201710262318 A CN 201710262318A CN 108728114 A CN108728114 A CN 108728114A
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- 0 CCCCC*C(CC1)CCC1C(CC1)CCC1c(c(N)c1N)cc*1O Chemical compound CCCCC*C(CC1)CCC1C(CC1)CCC1c(c(N)c1N)cc*1O 0.000 description 8
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- C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
- C09K19/06—Non-steroidal liquid crystal compounds
- C09K19/08—Non-steroidal liquid crystal compounds containing at least two non-condensed rings
- C09K19/30—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing saturated or unsaturated non-aromatic rings, e.g. cyclohexane rings
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- C09K19/00—Liquid crystal materials
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- C09K19/06—Non-steroidal liquid crystal compounds
- C09K19/08—Non-steroidal liquid crystal compounds containing at least two non-condensed rings
- C09K19/30—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing saturated or unsaturated non-aromatic rings, e.g. cyclohexane rings
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- 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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- C09K19/00—Liquid crystal materials
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- C09K19/06—Non-steroidal liquid crystal compounds
- C09K19/08—Non-steroidal liquid crystal compounds containing at least two non-condensed rings
- C09K19/30—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing saturated or unsaturated non-aromatic rings, e.g. cyclohexane rings
- C09K19/3001—Cyclohexane rings
- C09K19/3003—Compounds containing at least two rings in which the different rings are directly linked (covalent bond)
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- C09K19/00—Liquid crystal materials
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- C09K19/06—Non-steroidal liquid crystal compounds
- C09K19/08—Non-steroidal liquid crystal compounds containing at least two non-condensed rings
- C09K19/30—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing saturated or unsaturated non-aromatic rings, e.g. cyclohexane rings
- C09K19/3001—Cyclohexane rings
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- C09K19/06—Non-steroidal liquid crystal compounds
- C09K19/08—Non-steroidal liquid crystal compounds containing at least two non-condensed rings
- C09K19/30—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing saturated or unsaturated non-aromatic rings, e.g. cyclohexane rings
- C09K19/3001—Cyclohexane rings
- C09K19/3003—Compounds containing at least two rings in which the different rings are directly linked (covalent bond)
- C09K2019/301—Cy-Cy-Ph
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- C09K19/06—Non-steroidal liquid crystal compounds
- C09K19/08—Non-steroidal liquid crystal compounds containing at least two non-condensed rings
- C09K19/30—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing saturated or unsaturated non-aromatic rings, e.g. cyclohexane rings
- C09K19/3001—Cyclohexane rings
- C09K19/3003—Compounds containing at least two rings in which the different rings are directly linked (covalent bond)
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- C09K19/06—Non-steroidal liquid crystal compounds
- C09K19/08—Non-steroidal liquid crystal compounds containing at least two non-condensed rings
- C09K19/30—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing saturated or unsaturated non-aromatic rings, e.g. cyclohexane rings
- C09K19/3001—Cyclohexane rings
- C09K19/3028—Cyclohexane rings in which at least two rings are linked by a carbon chain containing carbon to carbon single bonds
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Abstract
The present invention relates to field of liquid crystal display more particularly to a kind of liquid crystal media and its application, which includes at least the compound representated by a kind of general formula I：And the compound representated by least one general formula II；Wherein, the compound representated by general formula I is that tricyclic contains 2,3- difluorobenzene class formation compounds, which has larger negative dielectric anisotropic and high clearing point；Compound representated by general formula II provided by the present invention is that two rings contain 2, the compound of 3- difluorobenzene class formations, the structure is negative dielectric anisotropic liquid crystal compound, uses fluoroethoxy structure in end, the dielectric anisotropy of liquid-crystal compounds is substantially improved.Liquid crystal media 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 media, specifically a kind of nematic phase liquid crystal composition is exactly of the invention
The liquid-crystal composition provided has negative dielectric anisotropy, and more specifically liquid-crystal composition provided by the present invention contains
A kind of fluorine substitution ethoxy compound, belongs 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.
Invention content
Since the response time of liquid crystal display depends on (d^2 γ 1)/Keff, (d is thickness of liquid crystal layer, and γ 1 revolves for liquid crystal
Turn viscosity, Keff is effective elastic constant), therefore, rotary viscosity is reduced, thickness of liquid crystal layer is reduced and promotes elastic constant
To achieve the purpose that improve the response time, thickness of liquid crystal layer depends on the design of liquid crystal display；And for liquid-crystal composition, drop
Low rotary viscosity and thickness of liquid crystal are most effective.The present invention provides a kind of completely new liquid crystal medias (hereafter can also become liquid crystal group
Close object), with low rotary viscosity, the response time of liquid crystal display can be effectively reduced.
Specifically, liquid crystal media of the present invention, includes at least the compound representated by a kind of general formula I：
Wherein, R1Represent C1~C12Straight chained alkyl, unbranched alkoxy or C2~C12Straight-chain alkenyl；A1Selected from lower structure：
And the compound representated by least one general formula II：
Wherein, R2Represent C1~C12Straight chained alkyl, unbranched alkoxy or C2~C12Straight-chain alkenyl；Z1Representation methoxy
Or ethylidene.
Compound representated by general formula I provided by the invention be contain 2,3- difluorobenzene structures liquid-crystal compounds such change
Object is closed, there is larger negative dielectric anisotropic and high clearing point, end group to use fluoroethoxy (- OCH2CH2F), substantially
Degree improves dielectric anisotropic, effectively promotes the dielectric anisotropic of liquid-crystal composition, reduces polar monomer and uses, increases low
Unit of viscosity uses, and reduces the rotary viscosity of liquid-crystal composition, promotes the liquid crystal display response time.For of the present invention
The negative dielectric anisotropic and clearing point of composition can be promoted in liquid-crystal composition.
In liquid crystal media provided by the invention, in the case where the quality summation of its all components is 100%, general formula I institutes
State the content of compound in the composition is advisable 5~70%, and preferably 1~60%；More preferable 25~45%, 30~60%,
10~40%, 37~57% or 15~37%；
Alternatively, the content of compound in the composition described in general formula I is advisable 15~57%, preferably 37~57%, 15
~37%, 38~47% or 31~34%；More preferable 20~35%；It is more advantageous to the display for meeting liquid crystal display at this time
Can, reduce the response time of liquid crystal display.
Specifically, the compound representated by ideal general formula I is selected from one kind of the compound representated by Formulas I A~Formulas I B
Or it is several：
Wherein, R1Represent C1~C7Straight chained alkyl, C2~C7Straight-chain alkenyl；
Preferably, the compound representated by general formula I is selected from one kind of the compound representated by Formulas I A1~IA8, IB1~IB8
Or it is several：
Wherein, when the compound representated by the general formula I selects IA2, IA3, IA4, IA5, IA6, IB2 and IB3, in the present invention
Application effect in the liquid crystal media is especially prominent.
Liquid crystal media of the present invention further comprises the compound representated by least one general formula II, the general formula II institutes
There is the compound represented the liquid-crystal compounds of 2,3-, bis- fluoro- Isosorbide-5-Nitrae-phenyl, such compound to have larger bear as two rings
Dielectric anisotropy and excellent intersolubility, end group use fluoroethoxy (- OCH2CH2F), dielectric is significantly improved
Anisotropic effectively promotes the dielectric anisotropic of liquid-crystal composition, reduces polar monomer and uses, and increasing low viscosity monomer makes
With reducing the rotary viscosity of liquid-crystal composition, promote the liquid crystal display response time.
In liquid crystal media provided by the invention, in the case where the quality summation of its all components is 100%, described in general formula II
The content of compound in liquid crystal media is advisable 1~40%, and preferably 3~35%；More preferable 5~28%, 3~20% or 10~
30%；Alternatively, the content of compound in liquid crystal media described in general formula II is 5~28%, preferably 19~24%, 9~20%, 12
~18% or 12~23%；More preferable 9~20%, it is more advantageous to the low temperature intersolubility of crystal composite and low rotary viscosity at this time.
Specifically, the compound representated by ideal general formula II is one or more in IIA or IIB：
Wherein, R2Represent C1~C7Straight chained alkyl or C2~C7Straight-chain alkenyl.
Preferably, compounds of formula II is one or more in IIA1~IIA8, IIB1~IIB8：
Wherein, when the compound representated by the general formula II selects IIA1, IIA2, IIA4, IIA5, IIA6, IIB2 and IIB4,
Application effect in liquid-crystal composition of the present invention is especially prominent.
In addition, liquid crystal media provided by the present invention can also further include representated by one or more general formula IIIs
Compound：
Wherein, R3、R4C is represented each independently1~C12Straight chained alkyl, unbranched alkoxy or C2~C12Straight-chain alkenyl；
A2、A3Trans- 1,4- cyclohexyl or 1,4 phenylenes are represented each independently.
Compound representated by general formula III provided by the invention is twin nuclei, and being added in liquid crystal media contributes to
Coordinate the compound representated by general formula I and general formula II of the present invention, further decreases viscosity and the increasing of liquid-crystal composition
Add intersolubility, improve the response time of liquid crystal display and widens the low-temperature working temperature of liquid crystal display.
In liquid crystal media provided by the invention, in the case where the quality summation of its all components is 100%, general formula III
The content of the compound in liquid crystal media is advisable 5~65%, and preferably 15~60% or 30~60%；More preferable 20~
55%, 15~45% or 31~60%；Alternatively, when compound described in liquid crystal media includes the general formula III, in medium
In content 19~55%, preferably 19~43%, 31~55%, 24~34% or 20~35%；More preferable 34~49%；
It is more advantageous to the response time for improving liquid crystal display and the operating temperature for widening liquid crystal display at this time.
Specifically, the compound representated by ideal general formula III is selected from the one or more of following compound：
Wherein, R3Represent C1~C7Straight chained alkyl；R4Represent C1~C7Straight chained alkyl, unbranched alkoxy or C2~C7's
Straight-chain alkenyl.
Preferably, the 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：
Wherein, compound selection IIIA1, IIIA2 representated by the general formula III, IIIA16, IIIA18, IIIA22,
When IIIA23, IIIB18, IIIB22, IIIC2, IIIC4, IIIC15 and IIIC16, answering in liquid crystal media of the present invention
It is especially prominent with effect.
Further, liquid crystal media provided by the present invention can also include one or more is selected from representated by general formula IV
Compound：
R5、R6C is represented each independently1~C12Straight chained alkyl, wherein one or more non-conterminous CH2Can by O or
CH=CH replaces.
A4Selected from lower structure：
In liquid crystal media provided by the invention, in the case where the quality summation of its all components is 100%, general formula IV institutes
State the content of compound in the medium is advisable 0~35%, and preferably 0~30% or 1~30%；More preferable 3~25%；Or
Person, the content of compound in liquid crystal media described in general formula IV is 0~25%, preferably 3~25% or 11~13%；More preferably
7~21%.It is more advantageous to the performance requirement for adapting to liquid crystal display at this time, reduces the rotary viscosity of liquid-crystal composition, promotes liquid
The response time of crystal display；Liquid crystal display quality problem caused by elastic constant is smaller is solved simultaneously, as image retention restores.
Preferably, the compound representated by general formula IV is selected from the one or more of formula IV A~following compounds of formula IV C：
Wherein, R5Represent C2~C10Straight chained alkyl or straight-chain alkenyl；R6Represent 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
It is one or more in structure：
Wherein, the compound representated by the general formula IV selects IVA1, IVA2, IVA8, IVA12, IVA16, IVB3, IVB12
And when IVB16, the application effect in liquid-crystal composition of the present invention is especially prominent.
Further, liquid crystal media provided by the present invention can also include one or more selected from compounds of formula V：
Wherein, R7Represent C1~C12Straight chained alkyl or C2~C12Straight-chain alkenyl；R8Represent F, C1~C12Straight chain alkane
Base, unbranched alkoxy C2~C12Straight-chain alkenyl；L1、L2、L3H or F is represented each independently.
Compound representated by general formula V of the present invention has big optical anisotropy, for of the present invention
The optical anisotropy of liquid-crystal composition can be promoted in liquid crystal media, reduce and liquid-crystal composition optical anisotropy component is provided
It uses, increases low viscosity monomer and use, the rotary viscosity for reducing liquid-crystal composition is realized, when promoting the response of liquid crystal display
Between.
In liquid crystal media provided by the invention, in the case where the quality summation of its all components is 100%, general formula V institutes
State the content of compound in liquid crystal media is advisable 0~30%, and preferably 0~20%；More preferable 1~20% or 5~15%；
Alternatively, the content of compound in liquid crystal media is in 0~15%, preferably 5~15% described in general formula V；More preferable 8~12%,
It is more advantageous at this time and adapts to liquid crystal display to the performance requirement of liquid-crystal composition, reduce the rotary viscosity of liquid-crystal composition, change
The response time of kind liquid crystal display.
Preferably, the compound representated by general formula V is selected from one or more in lower structure；
Wherein, R7Represent C1~C7Straight chained alkyl or C2~C7Straight-chain alkenyl, R8Represent C1~C7Straight chained alkyl, straight
Chain alkoxy or C2~C7Straight-chain alkenyl.
It is highly preferred that compound representated by general formula V be selected from Formula V A1~VA4, VB1~VB24, VC1~VC14, VD1~
It is one or more in VD24：
Wherein, when the compound representated by the general formula V selects VA3, VB14, VB21, VB22, VC3 and VC4, in the present invention
Application effect in the liquid crystal media is especially prominent.
It is described to effectively improve to ensure to realize significantly more synergistic effect in medium of the present invention between each component
The integrated application performance of liquid crystal material, the present invention have further carried out preferably the dosage of the middle each component of the liquid crystal material.
For specific, liquid crystal media 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 media includes following components：
Compound representated by (1) 10~60% general formula I；
Compound representated by (2) 3~35% general formula II；
Compound representated by (3) 15~60% 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 media includes following components：
Compound representated by (1) 15~57% general formula I；
Compound representated by (2) 5~28% general formula II；
Compound representated by (3) 19~55% 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 media includes following components：
Compound representated by (1) 30~60% general formula I；
Compound representated by (2) 3~30% general formula II；
Compound representated by (3) 15~60% 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 media includes following components：
Compound representated by (1) 30~57% general formula I；
Compound representated by (2) 5~24% general formula II；
Compound representated by (3) 19~55% 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 media includes following components：
Compound representated by (1) 10~35% general formula I；
Compound representated by (2) 5~35% 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) 0~15% general formula V.
It is highly preferred that the liquid crystal media includes following components：
Compound representated by (1) 15~35% general formula I；
Compound representated by (2) 7~28% 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) 0~12% general formula V.
Preferably, the liquid crystal media includes following components：
Compound representated by (1) 10~60% general formula I；
Compound representated by (2) 3~20% general formula II；
Compound representated by (3) 25~60% 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 media includes following components：
Compound representated by (1) 15~57% general formula I；
Compound representated by (2) 5~20% general formula II；
Compound representated by (3) 20~55% 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 media includes following components：
Compound representated by (1) 15~60% general formula I；
Compound representated by (2) 15~35% general formula II；
Compound representated by (3) 15~55% general formula IIIs；
Compound representated by (4) 0~25% general formula IV；
Compound representated by (5) 0~10% general formula V.
It is highly preferred that the liquid crystal media includes following components：
Compound representated by (1) 20~57% general formula I；
Compound representated by (2) 15~28% general formula II；
Compound representated by (3) 19~51% general formula IIIs；
Compound representated by (4) 0~21% general formula IV；
Compound representated by (5) 0~8.5% general formula V.
Preferably, the liquid crystal media includes following components：
Compound representated by (1) 10~40% general formula I；
Compound representated by (2) 3~35% general formula II；
Compound representated by (3) 31~60% 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 media includes following components：
Compound representated by (1) 15~37% general formula I；
Compound representated by (2) 5~28% general formula II；
Compound representated by (3) 31~55% 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 media includes following components：
Compound representated by (1) 15~60% general formula I；
Compound representated by (2) 10~30% general formula II；
Compound representated by (3) 15~35% 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 media includes following components：
Compound representated by (1) 20~57% general formula I；
Compound representated by (2) 12~28% general formula II；
Compound representated by (3) 19~35% 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 media includes following components：
Compound representated by (1) 10~40% general formula I；
Compound representated by (2) 3~30% general formula II；
Compound representated by (3) 20~60% 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 media includes following components：
Compound representated by (1) 15~37% general formula I；
Compound representated by (2) 5~28% general formula II；
Compound representated by (3) 24~55% general formula IIIs；
Compound representated by (4) 3~25% general formula IV；
Compound representated by (5) 0~12% general formula V.
Preferably, the liquid crystal media 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) 15~45% general formula IIIs；
Compound representated by (4) 0~20% general formula V.
It is highly preferred that the liquid crystal media includes following components：
Compound representated by (1) 37~57% general formula I；
Compound representated by (2) 12~24% general formula II；
Compound representated by (3) 19~43% general formula IIIs；
Compound representated by (4) 0~15% general formula V.
Preferably, the liquid crystal media includes following components：
Compound representated by (1) 30~60% general formula I；
Compound representated by (2) 15~30% general formula II；
Compound representated by (3) 15~45% general formula IIIs.
It is highly preferred that the liquid crystal media 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.
Preferably, the liquid crystal media includes following components：
Compound representated by (1) 25~45% general formula I；
Compound representated by (2) 10~26% general formula II；
Compound representated by (3) 15~40% general formula IIIs；
Compound representated by (4) 0~16% general formula IV；
Compound representated by (5) 1~20% general formula V.
It is highly preferred that the liquid crystal media includes following components：
Compound representated by (1) 31~37% general formula I；
Compound representated by (2) 12~23% general formula II；
Compound representated by (3) 20~35% general formula IIIs；
Compound representated by (4) 0~13% general formula IV；
Compound representated by (5) 5~15% general formula V.
Preferably, the liquid crystal media includes following components：
Compound representated by (1) 10~60% general formula I；
Compound representated by (2) 3~30% general formula II；
Compound representated by (3) 15~60% general formula IIIs；
Compound representated by (4) 0~30% general formula IV.
It is highly preferred that the liquid crystal media includes following components：
Compound representated by (1) 15~57% general formula I；
Compound representated by (2) 5~28% general formula II；
Compound representated by (3) 19~55% general formula IIIs；
Compound representated by (4) 0~25% general formula IV.
Preferably, the liquid crystal media includes following components：
Compound representated by (1) 10~40% general formula I；
Compound representated by (2) 3~30% general formula II；
Compound representated by (3) 25~60% general formula IIIs；
Compound representated by (4) 1~30% general formula IV.
It is highly preferred that the liquid crystal media includes following components：
Compound representated by (1) 15~37% general formula I；
Compound representated by (2) 5~28% general formula II；
Compound representated by (3) 31~55% general formula IIIs；
Compound representated by (4) 3~25% general formula IV.
In addition, in practice, it has been found that when liquid crystal media each component content of the present invention selects following range, apply
Performance is especially prominent：
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：
Compound representated by (1) 38~47% general formula I；
Compound representated by (2) 12~18% general formula II；
Compound representated by (3) 20~35% general formula IIIs；
Compound representated by (4) 5~15% general formula V；
Or：
Compound representated by (1) 15~37% general formula I；
Compound representated by (2) 5~28% general formula II；
Compound representated by (3) 31~55% general formula IIIs；
Compound representated by (4) 3~25% general formula IV；
It is preferred that：
Compound representated by (1) 20~35% general formula I；
Compound representated by (2) 9~20% general formula II；
Compound representated by (3) 34~49% general formula IIIs；
Compound representated by (4) 7~21% general formula IV；
Or：
Compound representated by (1) 31~34% general formula I；
Compound representated by (2) 12~23% general formula II；
Compound representated by (3) 24~34% general formula IIIs；
Compound representated by (4) 11~13% general formula IV；
Compound representated by (5) 8~12% general formula V.
Unless otherwise specified, the sum of the gross mass percentage of each component is 100% in liquid crystal media of the present invention.
Compound representated by general formula I provided by the present invention is 2, the 3- difluorobenzene class knots that tricyclic contains methoxyl group bridged bond
Structure compound, the structure are negative dielectric anisotropic liquid crystal compound, use fluoroethoxy structure in end, pass through research
It was found that after replacing ethyoxyl using fluorine, the negative dielectric anisotropic of the structure is increased dramatically, and only makees exemplary part chemical combination
Test result is as follows for object：
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 provided by the present invention is that two rings contain
The compound of 2,3- difluorobenzene class formations, the structure are negative dielectric anisotropic liquid crystal compound, and fluoro second is used in end
Oxygroup structure, after the study found that replacing ethyoxyl using fluorine, the negative dielectric anisotropic of the structure is increased dramatically,
Only making exemplary part of compounds, 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 III is twin nuclei, has low rotation
Viscosity and excellent intersolubility feature, are the essential components of fast-response liquid crystal display, and the compound representated by general formula IV is
Nonpolar tricyclic compound, such monomer have high clearing point and big elastic constant, are conducive to improve liquid-crystal composition
Elastic constant；Compound representated by general formula V is terphenyl compounds, such compound has big optical anisotropy, can
Effectively promote the optical anisotropy of liquid-crystal composition.
The various combinations of above-mentioned five kinds of liquid-crystal compounds as described above are (wherein, representated by general formula I and general formula II
Compound be essential component, remaining be optional component) combination formed liquid-crystal composition can realize ideal application
Effect.It should be strongly noted that when liquid crystal media of the present invention is three components composition, it is preferably combined as general formula
Compound representated by I+ general formula II+ general formula IIIs；When liquid crystal media of the present invention is four components composition, preferably
The compound being combined as representated by general formula I+ general formulas II+ general formula IIIs+general formula IV or general formula I+ general formulas II+ general formula IIIs+general formula V institutes
The compound of representative, to realize synergy of more preferably arranging in pairs or groups.
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 media of the present invention has low rotary viscosity, good low temperature intersolubility and fast response speed, can
For the fast-response liquid crystal display of plurality of display modes, in the VA such as VA/MVA/PVA/PSVA class displays and IPS or FFS
Use in mode display can be obviously improved liquid crystal display display effect, outstanding for the response time for promoting liquid crystal display
It is 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；Δ n represents optics
Anisotropy (25 DEG C)；Δ ε represents 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, involved liquid crystal components are known compound, can such as may be used by commercially available
It is provided by Beijing Bayi Space LCD Materials Technology Co., Ltd..
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
Comparative example 1
Table 26：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 27.
Table 27：The performance parameter of liquid-crystal composition compares
| Δn | Δε | Cp | γ1 | K11 | K22 | K33 | |
| Embodiment 1 | 0.100 | -3.1 | 76 | 74 | 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 media, which is characterized in that include the compound and at least one general formula representated by least one general formula I
Compound representated by II；
The general formula I is specially：
Wherein, R1Represent C1~C12Straight chained alkyl, unbranched alkoxy or C2~C12Straight-chain alkenyl；A1Selected from lower structure：
The general formula II is specially：
Wherein, R2Represent C1~C12Straight chained alkyl, unbranched alkoxy or C2~C12Straight-chain alkenyl；Z1Representation methoxy or Asia
Ethyl.
2. liquid crystal media according to claim 1, which is characterized in that the compound representated by general formula I is selected from Formulas I A~IB
The one or more of representative compound：
Wherein, R1Represent C1~C7Straight chained alkyl, C2~C7Straight-chain alkenyl；
Preferably, the compound representated by general formula I is selected from one kind or several of the compound representated by Formulas I A1~IA8, IB1~IB8
Kind：
3. liquid crystal media 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：
Wherein, R2Represent C1~C7Straight chained alkyl or C2~C7Straight-chain alkenyl；
Preferably, the compound representated by general formula II is one or more in IIA1~IIA8, IIB1~IIB8：
4. according to the liquid crystal media described in claims 1 to 3 any one, which is characterized in that also include one or more general formulas
The compound of III；The general formula III is specially：
Wherein, R3、R4C is represented each independently1~C12Straight chained alkyl, unbranched alkoxy or C2~C12Straight-chain alkenyl；A2、A3
Trans- 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：
Wherein, R3Represent C1~C7Straight chained alkyl；R4Represent 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 media described in Claims 1 to 4 any one, which is characterized in that also include one or more be selected from
The compound of general formula IV structures；The general formula IV is specially：
R5、R6C is represented each independently1~C12Straight chained alkyl, wherein one or more non-conterminous CH2It can be by O or CH=
CH replaces；
A4Selected from lower structure：
Preferably, the compound representated by general formula IV is one or more in formula IV A~formula IV C：
Wherein, R5Represent C2~C10Straight chained alkyl or straight-chain alkenyl；R6Represent 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 media described in Claims 1 to 5 any one, which is characterized in that also include one or more be selected from
Compounds of formula V；The general formula V is specially：
Wherein, R7Represent C1~C12Straight chained alkyl or C2~C12Straight-chain alkenyl；R8Represent F, C1~C12Straight chained alkyl, straight
Chain 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；
Wherein, R7Represent C1~C7Straight chained alkyl or C2~C7Straight-chain alkenyl, R8Represent C1~C7Straight chained alkyl, straight chain alkane
Oxygroup 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 media 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) 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 media includes following components：
Compound representated by (1) 10~60% general formula I；
Compound representated by (2) 3~35% general formula II；
Compound representated by (3) 15~60% 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 media includes following components：
Compound representated by (1) 15~57% general formula I；
Compound representated by (2) 5~28% general formula II；
Compound representated by (3) 19~55% 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 media includes following components：
Compound representated by (1) 30~60% general formula I；
Compound representated by (2) 3~30% general formula II；
Compound representated by (3) 15~60% 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 media includes following components：
Compound representated by (1) 30~57% general formula I；
Compound representated by (2) 5~24% general formula II；
Compound representated by (3) 19~55% 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 media includes following components：
Compound representated by (1) 10~35% general formula I；
Compound representated by (2) 5~35% 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) 0~15% general formula V；
It is highly preferred that the liquid crystal media includes following components：
Compound representated by (1) 15~35% general formula I；
Compound representated by (2) 7~28% 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) 0~12% general formula V；
Preferably, the liquid crystal media includes following components：
Compound representated by (1) 10~60% general formula I；
Compound representated by (2) 3~20% general formula II；
Compound representated by (3) 25~60% 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 media includes following components：
Compound representated by (1) 15~57% general formula I；
Compound representated by (2) 5~20% general formula II；
Compound representated by (3) 20~55% 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 media includes following components：
Compound representated by (1) 15~60% general formula I；
Compound representated by (2) 15~35% general formula II；
Compound representated by (3) 15~55% general formula IIIs；
Compound representated by (4) 0~25% general formula IV；
Compound representated by (5) 0~10% general formula V；
It is highly preferred that the liquid crystal media includes following components：
Compound representated by (1) 20~57% general formula I；
Compound representated by (2) 15~28% general formula II；
Compound representated by (3) 19~51% general formula IIIs；
Compound representated by (4) 0~21% general formula IV；
Compound representated by (5) 0~8.5% general formula V；
Preferably, the liquid crystal media includes following components：
Compound representated by (1) 10~40% general formula I；
Compound representated by (2) 3~35% general formula II；
Compound representated by (3) 31~60% 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 media includes following components：
Compound representated by (1) 15~37% general formula I；
Compound representated by (2) 5~28% general formula II；
Compound representated by (3) 31~55% 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 media includes following components：
Compound representated by (1) 15~60% general formula I；
Compound representated by (2) 10~30% general formula II；
Compound representated by (3) 15~35% 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 media includes following components：
Compound representated by (1) 20~57% general formula I；
Compound representated by (2) 12~28% general formula II；
Compound representated by (3) 19~35% 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 media includes following components：
Compound representated by (1) 10~40% general formula I；
Compound representated by (2) 3~30% general formula II；
Compound representated by (3) 20~60% 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 media includes following components：
Compound representated by (1) 15~37% general formula I；
Compound representated by (2) 5~28% general formula II；
Compound representated by (3) 24~55% general formula IIIs；
Compound representated by (4) 3~25% general formula IV；
Compound representated by (5) 0~12% general formula V；
Preferably, the liquid crystal media 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) 15~45% general formula IIIs；
Compound representated by (4) 0~20% general formula V；
It is highly preferred that the liquid crystal media includes following components：
Compound representated by (1) 37~57% general formula I；
Compound representated by (2) 12~24% general formula II；
Compound representated by (3) 19~43% general formula IIIs；
Compound representated by (4) 0~15% general formula V；
Preferably, the liquid crystal media includes following components：
Compound representated by (1) 30~60% general formula I；
Compound representated by (2) 15~30% general formula II；
Compound representated by (3) 15~45% general formula IIIs；
It is highly preferred that the liquid crystal media 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；
Preferably, the liquid crystal media includes following components：
Compound representated by (1) 25~45% general formula I；
Compound representated by (2) 10~26% general formula II；
Compound representated by (3) 15~40% general formula IIIs；
Compound representated by (4) 0~16% general formula IV；
Compound representated by (5) 1~20% general formula V；
It is highly preferred that the liquid crystal media includes following components：
Compound representated by (1) 31~37% general formula I；
Compound representated by (2) 12~23% general formula II；
Compound representated by (3) 20~35% general formula IIIs；
Compound representated by (4) 0~13% general formula IV；
Compound representated by (5) 5~15% general formula V；
Preferably, the liquid crystal media includes following components：
Compound representated by (1) 10~60% general formula I；
Compound representated by (2) 3~30% general formula II；
Compound representated by (3) 15~60% general formula IIIs；
Compound representated by (4) 0~30% general formula IV；
It is highly preferred that the liquid crystal media includes following components：
Compound representated by (1) 15~57% general formula I；
Compound representated by (2) 5~28% general formula II；
Compound representated by (3) 19~55% general formula IIIs；
Compound representated by (4) 0~25% general formula IV；
Preferably, the liquid crystal media includes following components：
Compound representated by (1) 10~40% general formula I；
Compound representated by (2) 3~30% general formula II；
Compound representated by (3) 25~60% general formula IIIs；
Compound representated by (4) 1~30% general formula IV；
It is highly preferred that the liquid crystal media includes following components：
Compound representated by (1) 15~37% general formula I；
Compound representated by (2) 5~28% general formula II；
Compound representated by (3) 31~55% general formula IIIs；
Compound representated by (4) 3~25% general formula IV.
8. according to the liquid crystal media described in claim 1~6 any one, which is characterized in that the liquid crystal media includes following
Component：
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：
Compound representated by (1) 38~47% general formula I；
Compound representated by (2) 12~18% general formula II；
Compound representated by (3) 20~35% general formula IIIs；
Compound representated by (4) 5~15% general formula V；
Or：
Compound representated by (1) 15~37% general formula I；
Compound representated by (2) 5~28% general formula II；
Compound representated by (3) 31~55% general formula IIIs；
Compound representated by (4) 3~25% general formula IV；
It is preferred that：
Compound representated by (1) 20~35% general formula I；
Compound representated by (2) 9~20% general formula II；
Compound representated by (3) 34~49% general formula IIIs；
Compound representated by (4) 7~21% general formula IV；
Or：
Compound representated by (1) 31~34% general formula I；
Compound representated by (2) 12~23% general formula II；
Compound representated by (3) 24~34% general formula IIIs；
Compound representated by (4) 11~13% general formula IV；
Compound representated by (5) 8~12% general formula V.
9. liquid crystal media according to claim 7 or 8, which is characterized in that the gross mass of each component in the liquid crystal media
The sum of percentage is 100%.
10. application of the liquid crystal media in liquid crystal display device described in claim 1~9 any one, preferably in fast-response liquid
Application in crystal device, more preferably answering in VA classes liquid crystal display device and IPS, FFS mode liquid crystal display device
With；The VA classes liquid crystal display device is preferably VA/MVA/PVA/PSVA.
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| CN111718726A (en) * | 2019-03-21 | 2020-09-29 | 北京八亿时空液晶科技股份有限公司 | Liquid crystal compound with negative dielectric anisotropy as well as preparation method and application thereof |
| WO2022088916A1 (en) * | 2020-11-02 | 2022-05-05 | 北京八亿时空液晶科技股份有限公司 | Liquid crystal composition containing pyran and terphenyl and use thereof |
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