CN108728113A - A kind of nematic phase liquid crystal composition containing fluoroethoxy structure and its application - Google Patents
A kind of nematic phase liquid crystal composition containing fluoroethoxy structure and its application Download PDFInfo
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- CN108728113A CN108728113A CN201710261584.1A CN201710261584A CN108728113A CN 108728113 A CN108728113 A CN 108728113A CN 201710261584 A CN201710261584 A CN 201710261584A CN 108728113 A CN108728113 A CN 108728113A
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- WVIIMZNLDWSIRH-UHFFFAOYSA-N C(CC1)CCC1C1CCCCC1 Chemical compound C(CC1)CCC1C1CCCCC1 WVIIMZNLDWSIRH-UHFFFAOYSA-N 0.000 description 1
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K19/00—Liquid crystal materials
- C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
- C09K19/06—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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- 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
- C09K19/3001—Cyclohexane rings
- C09K19/3066—Cyclohexane rings in which the rings are linked by a chain containing carbon and oxygen atoms, e.g. esters or ethers
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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
- C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
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- 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
- C09K2019/3036—Cy-C2H4-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
- C09K19/3028—Cyclohexane rings in which at least two rings are linked by a carbon chain containing carbon to carbon single bonds
- C09K2019/3037—Cy-Cy-C2H4-Ph
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Abstract
The present invention relates to field of liquid crystal display more particularly to a kind of nematic phase liquid crystal composition containing fluoroethoxy structure, the composition 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 the liquid-crystal compounds for containing 2,3- difluorobenzene structures, such compound has larger negative dielectric anisotropic and high clearing point；Compound representated by general formula II is the liquid-crystal compounds that two rings have 2,3-, bis- fluoro- Isosorbide-5-Nitrae-phenyl, and end uses fluoroethoxy structure, the dielectric anisotropy of liquid-crystal compounds is substantially improved.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.It is highly effective for the response time for improving liquid crystal display.
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, more specifically contains in liquid-crystal composition provided by the present invention
There is the liquid-crystal compounds of 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.
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 is most effective.The present invention provides a kind of completely new nematic phase liquid crystal composition containing fluoroethoxy structure,
It can be effectively reduced the response time of liquid crystal display with low rotary viscosity.
Specifically, composition of the present invention contains the nematic phase liquid crystal composition of fluoroethoxy structure, at least wrap
Containing the compound representated by a kind of general formula I：
Wherein, R1、R2C is represented each independently1~C12Straight chained alkyl, unbranched alkoxy or C2~C12Straight-chain alkenyl；
Z1Represent CH2O or CH2CH2。
And the compound representated by least one general formula II：
Wherein, R3Represent C1~C12Straight chained alkyl, unbranched alkoxy or C2~C12Straight-chain alkenyl；Z2Represent CH2O or
CH2CH2。
Compound representated by general formula I provided by the invention is the liquid-crystal compounds for containing 2,3- difluorobenzene structures, such
Compound has larger negative dielectric anisotropic and high clearing point, for that can be promoted in liquid-crystal composition of the present invention
The negative dielectric anisotropic and clearing point of liquid-crystal composition.
In liquid-crystal composition provided by the invention, in the case where the quality summation of its all components is 100%, general formula I
The content of the compound in the composition is advisable 5~70%, and preferably 8~60% or 10~65%；More preferable 10~
57%, 25~65%, 40~60%, 16~36% or 8~45%；
Alternatively, the content of compound in the composition described in general formula I 10~57%, preferably 10~42%, 44~
57% or 14~36%；More preferable 15~37% or 18~30%；It is more advantageous to the display performance for meeting liquid crystal display at this time,
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 or C2~C7Straight-chain alkenyl；R2Represent C1~C7Straight chained alkyl or straight
Chain alkoxy.
Preferably, the compound representated by general formula I is selected from one of the compound representated by Formulas I A1~IA32, IB1~IB32
Kind is several：
Wherein, when compound selection IA15~IA20 and IB15, IB16 representated by the general formula I, in liquid of the present invention
Application effect in crystal composite is especially prominent.
Liquid-crystal composition of the present invention further comprises the compound representated by least one general formula II, the general formula II
Representative compound is the liquid-crystal compounds that two rings have 2,3-, bis- fluoro- Isosorbide-5-Nitrae-phenyl, and end uses fluoroethoxy knot
Structure (- OCH2CH2F), the dielectric anisotropy of liquid-crystal compounds is substantially improved, being used for can in liquid-crystal composition of the present invention
The dielectric anisotropy of liquid-crystal composition is promoted, polarity monocrystalline usage amount is reduced, increases low viscosity neutrality monocrystalline and uses, reach drop
The purpose of low composition rotary viscosity.
In liquid-crystal composition provided by the invention, in the case where the quality summation of its all components is 100%, general formula II
The content of the compound in the composition is advisable 1~40%, and preferably 3~35%；More preferable 5~30%, 10~35%,
11~29% or 3~20%；Alternatively, the content of compound in the composition described in general formula II is advisable 5~30%, preferably 7
~30%；More preferable 17~24%, 5~27%, 9~26% or 11~23%, the low temperature for being more advantageous to crystal composite at this time are mutual
Dissolubility and low rotary viscosity.
Specifically, the compound representated by ideal general formula II is one or more in IIA or IIB：
Wherein, R3Represent 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：
Wherein, when the compound representated by the general formula III selects IIA1, IIA2 and IIA4, in liquid crystal group of the present invention
The application effect closed in object is especially prominent.
In addition, liquid-crystal composition provided by the present invention can also further include one or more general formula III institute's generations
The compound of table：
Wherein, R4、R5C is represented each independently1~C12Straight chained alkyl, unbranched alkoxy or C2~C12Straight-chain alkenyl；
A1、A2Trans- 1,4- cyclohexyl or 1,4 phenylenes are represented each independently；Work as A1、A2When different, A1It is preferred that Isosorbide-5-Nitrae-cyclohexyl, A2
It is preferred that Isosorbide-5-Nitrae phenylene, R4It is preferred that C1~C12Straight chained alkyl, R5It is preferred that C1~C12Unbranched alkoxy.
Compound representated by general formula III provided by the invention is twin nuclei, is added in liquid-crystal composition and helps
In coordinating the compound representated by general formula I and general formula II of the present invention, further promotes intersolubility, reduces rotary viscosity, change
The low temperature intersolubility of kind liquid-crystal composition and promotion response time.
In liquid-crystal composition provided by the invention, in the case where the quality summation of its all components is 100%, general formula
The content of compound described in III in the composition is advisable 5~65%, and preferably 10~60%；More preferable 10~55%, 15~
60%, 21~55% or 13~35%.Alternatively, when compound described in liquid-crystal composition includes the general formula III, in group
The content in object is closed 13~53%, preferably 27~53%, 13~21% or 21~52%；More preferable 30~44% or 24~
41%.It is more advantageous to the performance requirement for adapting to liquid crystal display at this time, improves the rotary viscosity of liquid-crystal composition, promotes liquid crystal
Show the response time of device.
Specifically, the compound representated by ideal general formula III is selected from the one or more of following compound：
Wherein, R4Represent C1~C7Straight chained alkyl；R5Represent 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, in liquid-crystal composition of the present invention
Application effect is especially prominent.
Further, liquid-crystal composition provided by the present invention can also include one or more is selected from representated by general formula IV
Compound：
R6、R7C is represented each independently1~C12Straight chained alkyl, wherein one or more non-conterminous CH2Can by O or
CH=CH replaces.
A3Selected from lower structure：
Compound representated by general formula IV of the present invention has high clearing point and big elastic constant, is used for this hair
The clearing point and elastic constant of liquid-crystal composition can be promoted in the bright liquid-crystal composition.
In liquid-crystal composition provided by the invention, in the case where the quality summation of its all components is 100%, general formula IV
The content of the compound in the composition is advisable 0~45%, and preferably 0~35%；More preferable 5~30%, 0~22%, 4
~23% or 1~35%；Alternatively, the content of compound in the composition is in 0~30%, preferably 5~30% described in general formula IV
Or 4~26%；More preferable 9~25% or 8~23%；It is more advantageous to the performance requirement for adapting to liquid crystal display at this time, reduces liquid
The rotary viscosity of crystal composite promotes the response time of liquid crystal display.
Preferably, the compound representated by general formula IV of the present invention is selected from one kind of formula IV A~following compounds of formula IV C
Or it is a variety of：
Wherein, 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
It is one or more in structure：
Wherein, compound selection IVA1, IVA2, IVA8, IVA12, IVA16 and IVB3 representated by the general formula IV,
When IVB12, IVB16, the application effect in liquid-crystal composition of the present invention is especially prominent.
Further, liquid-crystal composition provided by the present invention can also include one or more is selected from representated by general formula V
Compound：
Wherein, R8Represent C1~C12Straight chained alkyl or C2~C12Straight-chain alkenyl；R9Represent F, C1~C12Straight chain alkane
Base, unbranched alkoxy or C2~C12Straight-chain alkenyl；L1、L2、L3H or F is represented each independently；
It is preferred that R8Represent C1~C7Straight chained alkyl or C2~C7Straight-chain alkenyl, R9Represent F, C1~C7Straight chained alkyl, straight
Chain alkoxy or C2~C7Straight-chain alkenyl；L1、L2、L3H or F is represented each independently；Work as R9When representing F, L1、L3It is preferred that H, L2
It is preferred that F.
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 effectively promoted in liquid-crystal composition, reducing offer optical anisotropy class compound makes
With, increase low viscosity class monomer and uses, reduction composition rotary viscosity.
In liquid-crystal composition provided by the invention, in the case where the quality summation of its all components is 100%, general formula V
The content of the compound in the composition is advisable 0~30%, and preferably 0~25%；More preferable 0~20%, 1~25% or
5~20%；Alternatively, the content of compound in the composition described in general formula V is advisable 0~20%, preferably 5~19%；It is more excellent
Select 8~17%；It is more advantageous at this time and adapts to liquid crystal display to the performance requirement of liquid-crystal composition, reduce the rotation of liquid-crystal composition
Turn viscosity, improves the response time of liquid crystal display.
Preferably, the compound representated by general formula V is selected from one or more in lower structure；
Wherein, R8Represent C1~C7Straight chained alkyl or C2~C7Straight-chain alkenyl, R9Represent 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 VA2, VB14, VB21, VB22, VC3 and VC4, in the present invention
Application effect in the liquid-crystal composition is especially prominent.
To ensure to realize significantly more synergistic effect in composition of the present invention between each component, to effectively improve
The integrated application performance of liquid crystal material is stated, the present invention has further carried out the dosage of the middle each component of the liquid crystal material excellent
Choosing.
For specific, liquid-crystal composition provided by the present invention includes following components：
Compound representated by (1) 5~70% general formula I；
Compound representated by (2) 1~40% general formula II；
Compound representated by (3) 5~65% general formula IIIs；
Compound representated by (4) 0~45% 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) 3~35% general formula II；
Compound representated by (3) 10~60% general formula IIIs；
Compound representated by (4) 0~35% general formula IV；
Compound representated by (5) 0~25% 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) 5~30% general formula II；
Compound representated by (3) 13~55% general formula IIIs；
Compound representated by (4) 0~30% general formula IV；
Compound representated by (5) 0~20% general formula V.
Preferably, the liquid-crystal composition includes following components：
Compound representated by (1) 8~34% 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) 0~35% general formula IV；
Compound representated by (5) 0~25% general formula V.
It is highly preferred that the liquid-crystal composition includes following components：
Compound representated by (1) 10~34% general formula I；
Compound representated by (2) 5~30% general formula II；
Compound representated by (3) 21~55% general formula IIIs；
Compound representated by (4) 5~30% general formula IV；
Compound representated by (5) 0~20% general formula V.
Preferably, the liquid-crystal composition includes following components：
Compound representated by (1) 25~65% general formula I；
Compound representated by (2) 3~35% 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) 0~25% general formula V.
It is highly preferred that the liquid-crystal composition includes following components：
Compound representated by (1) 25~57% general formula I；
Compound representated by (2) 5~29% general formula II；
Compound representated by (3) 13~51% general formula IIIs；
Compound representated by (4) 0~22% general formula IV；
Compound representated by (5) 0~20% general formula V.
Preferably, the liquid-crystal composition includes following components：
Compound representated by (1) 10~65% general formula I；
Compound representated by (2) 15~35% 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) 0~25% general formula V.
It is highly preferred that the liquid-crystal composition includes following components：
Compound representated by (1) 14~57% general formula I；
Compound representated by (2) 15~30% general formula II；
Compound representated by (3) 13~51% general formula IIIs；
Compound representated by (4) 0~29% general formula IV；
Compound representated by (5) 0~20% general formula V.
Preferably, the liquid-crystal composition includes following components：
Compound representated by (1) 8~60% general formula I；
Compound representated by (2) 3~20% general formula II；
Compound representated by (3) 17~60% general formula IIIs；
Compound representated by (4) 0~35% general formula IV；
Compound representated by (5) 0~25% 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) 5~20% general formula II；
Compound representated by (3) 21~55% general formula IIIs；
Compound representated by (4) 0~30% general formula IV；
Compound representated by (5) 0~20% 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) 0~25% 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) 11~29% 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) 0~20% general formula V.
Preferably, the liquid-crystal composition includes following components：
Compound representated by (1) 8~45% general formula I；
Compound representated by (2) 3~35% general formula II；
Compound representated by (3) 30~60% general formula IIIs；
Compound representated by (4) 0~35% general formula IV；
Compound representated by (5) 0~25% 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) 5~30% general formula II；
Compound representated by (3) 30~55% general formula IIIs；
Compound representated by (4) 4~30% general formula IV；
Compound representated by (5) 0~20% general formula V.
Preferably, the liquid-crystal composition includes following components：
Compound representated by (1) 8~45% 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) 1~35% general formula IV；
Compound representated by (5) 0~25% 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) 5~30% general formula II；
Compound representated by (3) 21~55% general formula IIIs；
Compound representated by (4) 4~30% general formula IV；
Compound representated by (5) 0~20% general formula V.
Preferably, the liquid-crystal composition includes following components：
Compound representated by (1) 40~60% general formula I；
Compound representated by (2) 15~30% general formula II；
Compound representated by (3) 10~25% general formula IIIs；
Compound representated by (4) 0~25% general formula V.
It is highly preferred that the liquid-crystal composition includes following components：
Compound representated by (1) 44~57% general formula I；
Compound representated by (2) 17~24% general formula II；
Compound representated by (3) 13~21% general formula IIIs；
Compound representated by (4) 0~19% general formula V.
Preferably, the liquid-crystal composition 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) 10~55% general formula IIIs；
Compound representated by (4) 0~25% general formula IV；
Compound representated by (5) 1~25% 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) 5~27% general formula II；
Compound representated by (3) 13~52% general formula IIIs；
Compound representated by (4) 0~23% general formula IV；
Compound representated by (5) 5~20% general formula V.
Preferably, the liquid-crystal composition includes following components：
Compound representated by (1) 8~60% general formula I；
Compound representated by (2) 5~35% general formula II；
Compound representated by (3) 15~60% general formula IIIs；
Compound representated by (4) 0~35% general formula IV.
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) 7~30% general formula II；
Compound representated by (3) 19~55% general formula IIIs；
Compound representated by (4) 0~30% general formula IV.
Preferably, the liquid-crystal composition includes following components：
Compound representated by (1) 13~40% general formula I；
Compound representated by (2) 3~30% general formula II；
Compound representated by (3) 17~55% general formula IIIs；
Compound representated by (4) 1~25% general formula IV；
Compound representated by (5) 1~25% general formula V.
It is highly preferred that the liquid-crystal composition includes following components：
Compound representated by (1) 16~36% general formula I；
Compound representated by (2) 5~27% general formula II；
Compound representated by (3) 21~52% general formula IIIs；
Compound representated by (4) 4~23% general formula IV；
Compound representated by (5) 5~20% general formula V.
Preferably, the liquid-crystal composition includes following components：
Compound representated by (1) 8~45% general formula I；
Compound representated by (2) 5~35% general formula II；
Compound representated by (3) 25~60% general formula IIIs；
Compound representated by (4) 1~35% general formula IV.
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) 7~30% general formula II；
Compound representated by (3) 27~55% general formula IIIs；
Compound representated by (4) 5~30% general formula IV.
In addition, in practice, it has been found that when liquid-crystal composition each component content of the present invention selects following range, answer
It is especially prominent with performance：
Compound representated by (1) 50~60% general formula I；
Compound representated by (2) 20~30% general formula II；
Compound representated by (3) 15~25% general formula IIIs；
Or：
Compound representated by (1) 44~57% general formula I；
Compound representated by (2) 17~24% general formula II；
Compound representated by (3) 13~21% general formula IIIs；
Compound representated by (4) 5~19% general formula V；
Or：
Compound representated by (1) 10~42% general formula I；
Compound representated by (2) 7~30% general formula II；
Compound representated by (3) 27~53% general formula IIIs；
Compound representated by (4) 5~30% general formula IV；
It is preferred that：
Compound representated by (1) 15~37% general formula I；
Compound representated by (2) 9~26% general formula II；
Compound representated by (3) 30~44% general formula IIIs；
Compound representated by (4) 9~25% general formula IV；
Or：
Compound representated by (1) 14~36% general formula I；
Compound representated by (2) 5~27% general formula II；
Compound representated by (3) 21~52% general formula IIIs；
Compound representated by (4) 4~26% general formula IV；
Compound representated by (5) 5~20% general formula V；
It is preferred that：
Compound representated by (1) 18~30% general formula I；
Compound representated by (2) 11~23% general formula II；
Compound representated by (3) 24~41% general formula IIIs；
Compound representated by (4) 8~23% general formula IV；
Compound representated by (5) 8~17% general formula V.
Unless otherwise specified, the sum of the gross mass percentage of each component is 100% in liquid-crystal composition of the present invention.
Compound representated by general formula I provided by the present invention is that tricyclic contains 2,3- difluorobenzene class formation compounds, should
Structure has larger negative dielectric anisotropic and high clearing point；Compound representated by general formula II provided by the present invention is
Two rings contain the compound of 2,3- difluorobenzene class formations, which is negative dielectric anisotropic liquid crystal compound, is adopted in end
With fluoroethoxy structure, after the study found that replacing ethyoxyl using fluorine, the negative dielectric anisotropic of the structure obtains greatly
Width is promoted, and only making exemplary part of compounds, test result is as follows：
It is above to compare the compound (chemical combination representated by general formula II it can be found that fluoroethoxy proposed by the invention
Object) there is big negative dielectric anisotropic, the negative dielectric anisotropic of liquid-crystal composition can be effectively promoted, reducing polar monomer makes
With increase low viscosity monomer uses, and reduces the rotary viscosity of system, promotes the response time；In addition, the change representated by general formula III
Conjunction object is twin nuclei, has the characteristics that low rotary viscosity and excellent intersolubility, is that fast-response liquid crystal display is essential
Component；Compound representated by general formula IV is nonpolar tricyclic compound, such monomer has high clearing point and big elasticity
Constant is conducive to the elastic constant for improving liquid-crystal composition；Compound representated by general formula V has big optical anisotropy,
It is highly effective for the dielectric anisotropy for promoting 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 composition of the present invention is three components composition, preferably it is combined as leading to
Compound representated by Formulas I+general formula II+ general formula IIIs；When liquid-crystal composition of the present invention is four components composition, reason
The compound being combined as representated by general formula I+ general formulas II+ general formula IIIs+general formula IV or general formula I+ general formula II+ general formula IIIs thought+logical
Compound representated by Formula V, 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 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；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
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
Comparative example 1
Table 47：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 48.
Table 48：The performance parameter of liquid-crystal composition compares
| Δn | Δε | Cp | γ1 | K11 | K22 | K33 | |
| Embodiment 1 | 0.108 | -3.8 | 90 | 85 | 14.9 | 7.5 | 16.1 |
| 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 nematic phase liquid crystal composition containing fluoroethoxy structure, which is characterized in that include at least one general formula I institutes
Compound representated by the compound of representative and at least one general formula II；
The general formula I is specially：
Wherein, R1、R2C is represented each independently1~C12Straight chained alkyl, unbranched alkoxy or C2~C12Straight-chain alkenyl；
IZ1Represent CH2O or CH2CH2
The general formula II is specially：
Wherein, R3Represent C1~C12Straight chained alkyl, unbranched alkoxy or C2~C12Straight-chain alkenyl；Z2Represent CH2O or
CH2CH2。
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：
Wherein, R1Represent C1~C7Straight chained alkyl or C2~C7Straight-chain alkenyl；R2Represent C1~C7Straight chained alkyl or straight chain alkane
Oxygroup；
Preferably, the compound representated by general formula I be selected from Formulas I A1~IA32, IB1~IB32 representated by compound one kind or
It is several：
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：
Wherein, R3Represent 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. 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：
Wherein, R4、R5C is represented each independently1~C12Straight chained alkyl, unbranched alkoxy or C2~C12Straight-chain alkenyl；A1、A2
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：
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：
R6、R7C is represented each independently1~C12Straight chained alkyl, wherein one or more non-conterminous CH2It can be by O or CH=
CH replaces；
A3Selected from lower structure：
Preferably, the compound representated by general formula IV is one or more in formula IV A~formula IV C：
Wherein, 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 or C2~C12Straight-chain alkenyl；L1、L2、L3H or F is represented each independently；
Preferably, compounds of formula V is one or more in VA~VD；
Wherein, R8Represent C1~C7Straight chained alkyl or C2~C7Straight-chain alkenyl, R9Represent 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 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) 1~40% 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) 3~35% general formula II；
Compound representated by (3) 10~60% general formula IIIs；
Compound representated by (4) 0~35% general formula IV；
Compound representated by (5) 0~25% 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) 5~30% general formula II；
Compound representated by (3) 13~55% general formula IIIs；
Compound representated by (4) 0~30% general formula IV；
Compound representated by (5) 0~20% general formula V；
Preferably, the liquid-crystal composition includes following components：
Compound representated by (1) 8~34% 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) 0~35% general formula IV；
Compound representated by (5) 0~25% general formula V；
It is highly preferred that the liquid-crystal composition includes following components：
Compound representated by (1) 10~34% general formula I；
Compound representated by (2) 5~30% general formula II；
Compound representated by (3) 21~55% general formula IIIs；
Compound representated by (4) 5~30% general formula IV；
Compound representated by (5) 0~20% general formula V；
Preferably, the liquid-crystal composition includes following components：
Compound representated by (1) 25~65% general formula I；
Compound representated by (2) 3~35% 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) 0~25% general formula V；
It is highly preferred that the liquid-crystal composition includes following components：
Compound representated by (1) 25~57% general formula I；
Compound representated by (2) 5~29% general formula II；
Compound representated by (3) 13~51% general formula IIIs；
Compound representated by (4) 0~22% general formula IV；
Compound representated by (5) 0~20% general formula V；
Preferably, the liquid-crystal composition includes following components：
Compound representated by (1) 10~65% general formula I；
Compound representated by (2) 15~35% 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) 0~25% general formula V；
It is highly preferred that the liquid-crystal composition includes following components：
Compound representated by (1) 14~57% general formula I；
Compound representated by (2) 15~30% general formula II；
Compound representated by (3) 13~51% general formula IIIs；
Compound representated by (4) 0~29% general formula IV；
Compound representated by (5) 0~20% general formula V；
Preferably, the liquid-crystal composition includes following components：
Compound representated by (1) 8~60% general formula I；
Compound representated by (2) 3~20% general formula II；
Compound representated by (3) 17~60% general formula IIIs；
Compound representated by (4) 0~35% general formula IV；
Compound representated by (5) 0~25% 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) 5~20% general formula II；
Compound representated by (3) 21~55% general formula IIIs；
Compound representated by (4) 0~30% general formula IV；
Compound representated by (5) 0~20% 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) 0~25% 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) 11~29% 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) 0~20% general formula V；
Preferably, the liquid-crystal composition includes following components：
Compound representated by (1) 8~45% general formula I；
Compound representated by (2) 3~35% general formula II；
Compound representated by (3) 30~60 general formula IIIs；
Compound representated by (4) 0~35% general formula IV；
Compound representated by (5) 0~25% 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) 5~30% general formula II；
Compound representated by (3) 30~55% general formula IIIs；
Compound representated by (4) 4~30% general formula IV；
Compound representated by (5) 0~20% general formula V；
Preferably, the liquid-crystal composition includes following components：
Compound representated by (1) 8~45% 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) 1~35% general formula IV；
Compound representated by (5) 0~25% 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) 5~30% general formula II；
Compound representated by (3) 21~55% general formula IIIs；
Compound representated by (4) 4~30% general formula IV；
Compound representated by (5) 0~20% general formula V；
Preferably, the liquid-crystal composition includes following components：
Compound representated by (1) 40~60% general formula I；
Compound representated by (2) 15~30% general formula II；
Compound representated by (3) 10~25% general formula IIIs；
Compound representated by (4) 0~25% general formula V；
It is highly preferred that the liquid-crystal composition includes following components：
Compound representated by (1) 44~57% general formula I；
Compound representated by (2) 17~24% general formula II；
Compound representated by (3) 13~21% general formula IIIs；
Compound representated by (4) 0~19% general formula V；
Preferably, the liquid-crystal composition 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) 10~55% general formula IIIs；
Compound representated by (4) 0~25% general formula IV；
Compound representated by (5) 1~25% 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) 5~27% general formula II；
Compound representated by (3) 13~52% general formula IIIs；
Compound representated by (4) 0~23% general formula IV；
Compound representated by (5) 5~20% general formula V；
Preferably, the liquid-crystal composition includes following components：
Compound representated by (1) 8~60% general formula I；
Compound representated by (2) 5~35% general formula II；
Compound representated by (3) 15~60% general formula IIIs；
Compound representated by (4) 0~35% general formula IV；
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) 7~30% general formula II；
Compound representated by (3) 19~55% general formula IIIs；
Compound representated by (4) 0~30% general formula IV；
Preferably, the liquid-crystal composition includes following components：
Compound representated by (1) 13~40% general formula I；
Compound representated by (2) 3~30% general formula II；
Compound representated by (3) 17~55% general formula IIIs；
Compound representated by (4) 1~25% general formula IV；
Compound representated by (5) 1~25% general formula V；
It is highly preferred that the liquid-crystal composition includes following components：
Compound representated by (1) 16~36% general formula I；
Compound representated by (2) 5~27% general formula II；
Compound representated by (3) 21~52% general formula IIIs；
Compound representated by (4) 4~23% general formula IV；
Compound representated by (5) 5~20% general formula V；
Preferably, the liquid-crystal composition includes following components：
Compound representated by (1) 8~45% general formula I；
Compound representated by (2) 5~35% general formula II；
Compound representated by (3) 25~60% general formula IIIs；
Compound representated by (4) 1~35% general formula IV；
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) 7~30% general formula II；
Compound representated by (3) 27~55% general formula IIIs；
Compound representated by (4) 5~30% general formula IV.
8. according to the liquid-crystal composition described in claim 1~6 any one, which is characterized in that the liquid-crystal composition includes
Following components：
Compound representated by (1) 50~60% general formula I；
Compound representated by (2) 20~30% general formula II；
Compound representated by (3) 15~25% general formula IIIs；
Or：
Compound representated by (1) 44~57% general formula I；
Compound representated by (2) 17~24% general formula II；
Compound representated by (3) 13~21% general formula IIIs；
Compound representated by (4) 5~19% general formula V；
Or：
Compound representated by (1) 10~42% general formula I；
Compound representated by (2) 7~30% general formula II；
Compound representated by (3) 27~53% general formula IIIs；
Compound representated by (4) 5~30% general formula IV；
It is preferred that：
Compound representated by (1) 15~37% general formula I；
Compound representated by (2) 9~26% general formula II；
Compound representated by (3) 30~44% general formula IIIs；
Compound representated by (4) 9~25% general formula IV；
Or：
Compound representated by (1) 14~36% general formula I；
Compound representated by (2) 5~27% general formula II；
Compound representated by (3) 21~52% general formula IIIs；
Compound representated by (4) 4~26% general formula IV；
Compound representated by (5) 5~20% general formula V；
It is preferred that：
Compound representated by (1) 18~30% general formula I；
Compound representated by (2) 11~23% general formula II；
Compound representated by (3) 24~41% general formula IIIs；
Compound representated by (4) 8~23% general formula IV；
Compound representated by (5) 8~17% general formula V.
9. liquid-crystal composition according to claim 7 or 8, which is characterized in that each component is total in the liquid-crystal composition
The sum of mass percent is 100%.
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 VA classes liquid crystal display device and IPS, FFS mode liquid crystal display device
Using；The VA classes liquid crystal display device is preferably VA/MVA/PVA/PSVA.
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