CN106883865B - A kind of negative dielectric anisotropy liquid crystal composition containing benzofuran and its application - Google Patents
A kind of negative dielectric anisotropy liquid crystal composition containing benzofuran and its application Download PDFInfo
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Abstract
The present invention relates to technical field of liquid crystal display, in particular to a kind of negative dielectric anisotropy liquid crystal composition containing benzofuran.The nematic phase liquid crystal composition includes at least compound representated by a kind of general formula I:R1、R2It is independently represented each other C1~C12Straight chained alkyl, wherein one or more non-conterminous CH2It can be replaced O, S or CH=CH；And include at least a kind of compounds of formula II:R3、R4It is independently represented each other C1~C12Straight chained alkyl, wherein one or more non-conterminous CH2It can be replaced O, S or CH=CH；A1、A2It is independently represented each other trans- 1,4- cyclohexyl or 1,4- phenylene.Liquid-crystal composition provided by the present invention increases dielectric anisotropy by addition I class compound, reduces polar monomer with this and uses, and increases class ii compound and uses, and achievees the purpose that reduce liquid-crystal composition rotary viscosity.
Description
Technical field
The present invention relates to a kind of liquid-crystal composition, specifically a kind of nematic phase liquid crystal composition, exactly, this hair
Liquid-crystal composition provided by bright has negative dielectric anisotropy and faster response time.
Background technique
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, especially 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 has found the first liquid crystal material benzoic acid cholesterol (cholesteryl benzoate).
Manguin has invented rubbing within 1917, to make single domain liquid crystal and research optical anisotropy.E.Bose in 1909
Moving (Swarm) theory is established, and (1918) are supported in the experiment for obtaining L.S.Ormstein and F.Zernike et al., after
Statistical fluctuation is discussed as through De Gennes.G.W.Oseen and H.Zocher was obtained in foundation continuum theory in 1933
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 accordingly by W.Kast.Nineteen twenty-seven,
V.Freedericksz and V.Zolinao discovery nematic liquid crystal is under electric field or magnetic fields, and deformation occurs and there are voltages
Threshold value (Freederichsz transformation).This production for being found to be liquid crystal display provides foundation.
Nineteen sixty-eight RCA Corp., U.S. R.Williams discovery 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 principle, and people are using TN photoelectric effect and integrate
Circuit combines, and is made into display device (TN-LCD), has opened up wide prospect 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) mode
And active matrix (Active matrix:AM) mode that P.Brody was proposed in 1972 is used again.Traditional TN-
LCD technology has developed into STN-LCD and TFT-LCD technology, 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 technology has more extensive application prospect.Wherein " active matrix " wraps
Include two types: 1, the OMS on the silicon wafer as substrate (metal-oxide semiconductor (MOS)) or other diodes.2, in conduct
Thin film transistor (TFT) (TFT) on the glass plate of substrate.Monocrystalline silicon limits display size as substrate material, because each section is aobvious
Show that device even module assembled many problems occurs in its junction.Thus, second of thin film transistor (TFT), which is that tool is promising, to be had
Active matrix type, the photoelectric effect utilized are usually TN effect.TFT includes compound semiconductor, such as Cdse, or with polycrystalline or
TFT based on amorphous silicon.
Currently, LCD product technology is mature, the technical problems such as visual angle, resolution ratio, color saturation are successfully solved,
Its display performance already close to or be more than CRT monitor.Large scale and small-medium size LCD have gradually occupied flat in respective field
The dominant position of plate display.(transmitance is low, absolute transmitance 5% or so) is restricted by liquid crystal display itself, causes to need
The brightness of backlight module is substantially improved to reach good display effect, dramatically increases the power consumption of backlight module,
On the other hand, (molecule bends the Flexo as existing for positivity FFS display pattern under high voltage, because there are curved for FFS electric field
Bent electric field line, positive liquid crystal molecules are arranged along electric field line direction) effect, cause liquid crystal display to generate apparent flashing, drop
Low display effect.
Summary of the invention
The present invention provides a kind of negative dielectric anisotropy liquid crystal composition containing benzofuran, on the one hand promotes liquid crystal
Show the transmitance of device；On the other hand excluding liquid crystal display, there are Flexo (arrangement of negative liquid crystal molecule vertical electric field direction) effects
It answers, to effectively improve the flicker problem of liquid crystal display；To reach good display effect.
Specifically, the present invention provides a kind of negative dielectric anisotropy liquid crystal composition containing benzofuran, described group
It closes object and includes at least compound representated by a kind of general formula I:
R1、R2It is independently represented each other C1~C12Straight chained alkyl, wherein one or more non-conterminous CH2It can be by O, S
Or replaced CH=CH；
And include at least a kind of compounds of formula II:
R3、R4It is independently represented each other C1~C12Straight chained alkyl, wherein one or more non-conterminous CH2It can be by O, S
Or replaced CH=CH；A1、A2It is independently represented each other trans- 1,4- cyclohexyl or 1,4- phenylene.
Compound representated by general formula I provided by the invention is dibenzofurans class compound, which has big bear
Dielectric anisotropy.
Preferably, the one or more of the compound representative in following formula of compound representated by general formula I:
Wherein, R1、R3Represent C1~C7Straight chained alkyl.
As more preferably technical solution, the compound representative in following formula of compound representated by above-mentioned general formula I
One or more:
Compound representated by general formula II provided by the invention is twin nuclei, it is preferable that representated by the general formula II
Compound 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.
As more preferably technical solution, compound representated by general formula II is selected from representated by Formula II A1~Formula II C24
The one or more of compound:
Compound representated by liquid-crystal composition formula of I provided by the present invention is the chemical combination of dibenzofurans structure
Object has great negative dielectric anisotropic, can effectively increase the dielectric anisotropy of liquid-crystal composition；Representated by general formula II
Compound be two ring structures, such compound has extremely low rotary viscosity, as the rotary viscosity for reducing liquid-crystal composition
Optimal selection；Liquid-crystal composition provided by the present invention increases dielectric anisotropy by addition I class compound, is reduced with this
Polar monomer uses, and increases class ii compound and uses, and achievees the purpose that reduce liquid-crystal composition rotary viscosity.
Preferably, liquid-crystal composition provided by the present invention also includes one or more chemical combination selected from general formula III structure
Object, to help to promote the elastic constant and clearing point of liquid-crystal composition:
R5、R6It is independently represented each other C1~C12Straight chained alkyl, wherein one or more non-conterminous CH2Can by O or
CH=CH replaces.
A3It is each independently selected from flowering structure:
Preferably, compound representated by general formula III is selected from one of formula III A~formula III C or a variety of:
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 III is selected from one of formula III A1~formula III C30 structure or a variety of:
Further, it is preferable to which liquid-crystal composition provided by the present invention also includes one or more chemical combination selected from general formula IV
Object:
Wherein, R7、R8It is independently represented each other C1~C12Straight chained alkyl, alkoxy or C2~C12Straight-chain alkenyl；A4Generation
Table 1 or 4 cyclohexylidene or Isosorbide-5-Nitrae-phenylene；Z1Represent singly-bound, CH2CH2Or CH2O。
Preferably, compound representated by general formula IV is selected from one of following compound or a variety of:
Wherein, R7Represent C1~C7Straight chained alkyl or C2~C7Straight-chain alkenyl；R8Represent C1~C7Straight chained alkyl or straight
Alkane
Oxygroup.
It is highly preferred that compounds of formula IV is selected from one of formula IV A1~formula IV D16 or a variety of；
The optical anisotropy of liquid-crystal composition liquid-crystal composition provided by the invention preferably also wraps in order to further increase
Containing compound representated by one or more general formula V:
Wherein, R9、R10It is independently represented each other C1~C12Straight chained alkyl.
Preferably, compound representated by general formula V is selected from one of flowering structure or a variety of:
And liquid-crystal composition preferably provided by the present invention further comprises representated by one or more general formula VI
Compound:
Wherein, R11、R12It is independently represented each other C1~C12Straight chained alkyl, unbranched alkoxy；L1Represent H or F.
Preferably, compound representated by general formula VI is selected from one of VIA and VIB or a variety of:
Wherein, R11、R12It is independently represented each other C1~C7Straight chained alkyl, unbranched alkoxy；It is preferred that C1~C5Straight chained alkyl
Or unbranched alkoxy.
Liquid-crystal composition provided by the present invention also includes compound representated by one or more general formula VII:
Wherein R13、R14It is independently represented each other C1~C12Straight chained alkyl, unbranched alkoxy or C2~C12Straight chain alkene
Base；A5Selected from flowering structure:
A6Selected from flowering structure:
Preferably, compound representated by general formula VII is selected from one of flowering structure or a variety of:
Wherein, R13Represent C1~C7Straight chained alkyl or C2~C7Straight-chain alkenyl, preferably C2~C5Straight chained alkyl or straight
Alkenyl；R14Represent C1~C7Straight chained alkyl or unbranched alkoxy, preferably C1~C5Straight chained alkyl or unbranched alkoxy.
More preferably, liquid-crystal composition provided by the present invention also includes change representated by one or more general formula VIII
Close object:
Wherein, R15、R16It is independently represented each other C1~C12Straight chained alkyl；L2、L3It is independently represented each other H or F；A7Generation
Table Isosorbide-5-Nitrae-cyclohexyl or Isosorbide-5-Nitrae-phenylene.
Preferably, compound representated by general formula VIII is selected from the one or more of flowering structure:
Wherein, R15、R16It is independently represented each other C1~C7Straight chained alkyl, preferably C2~C5Straight chained alkyl.
In addition, liquid-crystal composition provided by the present invention also includes compound representated by one or more general formula IX:
Wherein, R17、R18It is independently represented each other C1~C12Straight chained alkyl, unbranched alkoxy or C2~C12Straight chain alkene
Base,；Preferably, R17Represent C2~C7Straight-chain alkenyl or straight chained alkyl, further preferred C2~C5Straight chained alkyl or straight chain alkene
Base；R18Represent C1~C7Straight chained alkyl or unbranched alkoxy, further preferred C1~C5Straight chained alkyl or unbranched alkoxy.
Above-mentioned liquid-crystal composition, except compound representated by general formula I and general formula II be essential group exceptionally, other components are (such as
Compound shown in general formula III~general formula IX) it is optional component, any combination may be selected in optional way, such as only essential
It is added in component one of above-mentioned " other components ", several or whole.
For specific, meet the needs of different to make liquid-crystal composition, liquid-crystal composition provided by the present invention into
One step has made preferred restriction to the content range of each component in above-mentioned composition.
Liquid-crystal composition of the present invention, by weight, including following components: change representated by 1~11 part of general formula I
Object is closed, compound representated by 20~50 parts of general formula II, compound representated by 0~15 part of general formula III, 3~20 parts of general formula IV
Representative compound, compound representated by 0~30 part of general formula V, compound representated by 0~15 part of general formula VI, 5~50 parts
Compound representated by general formula VII, compound representated by 0~40 part of general formula IX.
Preferably, liquid-crystal composition provided by the present invention includes following components: chemical combination representated by 2~11 parts of general formula I
Object, compound representated by 27~40 parts of general formula II, compound representated by 0~10 part of general formula III, 5~16 parts of general formula IV institutes
The compound of representative, compound representated by 0~25 part of general formula V, compound representated by 0~10 part of general formula VI, 7~48 parts logical
Compound representated by Formula VII, compound representated by 0~33 part of general formula IX.
Or liquid-crystal composition provided by the present invention includes following components: compound representated by 12~30 parts of general formula I, 20
Compound representated by~60 parts of general formula II, compound representated by 0~25 part of general formula III, representated by 0~10 part of general formula IV
Compound, compound representated by 0~20 part of general formula V, compound representated by 0~60 part of general formula VII, 0~10 part of general formula
Compound representated by VIII, compound representated by 0~25 part of general formula IX.
Preferably, liquid-crystal composition provided by the present invention includes following components: chemical combination representated by 12~25 parts of general formula I
Object, compound representated by 29~53 parts of general formula II, compound representated by 0~21 part of general formula III, 0~2 part of general formula IV institute's generation
The compound of table, compound representated by 0~10 part of general formula V, compound representated by 0~54 part of general formula VII, 0~8 part of general formula
Compound representated by VIII, compound representated by 0~20 part of general formula IX.
Or liquid-crystal composition provided by the present invention includes following components: compound representated by 3~30 parts of general formula I, 20
Compound representated by~55 parts of general formula II, compound representated by 5~25 parts of general formula IIIs, representated by 0~20 part of general formula IV
Compound, compound representated by 0~15 part of general formula V, compound representated by 0~45 part of general formula VII, 0~10 part of general formula
Compound representated by VIII, compound representated by 0~40 part of general formula IX.
Preferably, liquid-crystal composition provided by the present invention includes following components: chemical combination representated by 5~25 parts of general formula I
Object, compound representated by 29~53 parts of general formula II, compound representated by 6~21 parts of general formula IIIs, 0~16 part of general formula IV institute
The compound of representative, compound representated by 0~10 part of general formula V, compound representated by 0~40 part of general formula VII, 0~8 part logical
Compound representated by Formula VIII, compound representated by 0~33 part of general formula IX.
Or liquid-crystal composition provided by the present invention includes following components: compound representated by 1~15 part of general formula I, 20
Compound representated by~40 parts of general formula II, compound representated by 1~20 part of general formula IV, change representated by 0~30 part of general formula V
Object is closed, compound representated by 0~15 part of general formula VI, compound representated by 25~60 parts of general formula VII.
Preferably, liquid-crystal composition provided by the present invention includes following components: chemical combination representated by 2~14 parts of general formula I
Object, compound representated by 27~36 parts of general formula II, compound representated by 2~15 parts of general formula IV, 0~25 part of general formula V institute's generation
The compound of table, compound representated by 0~10 part of general formula VI, compound representated by 29~54 parts of general formula VII.
And it is more preferably formulated are as follows: compound representated by 2~14 parts of general formula I, representated by 27~36 parts of general formula II
Compound, compound representated by 2~14 parts of general formula IV, compound representated by 6~25 parts of general formula V, 29~48 parts of general formulas
Compound representated by VII.
In above-mentioned amount ranges, it can obtain that rotary viscosity is low, the big negative dielectric anisotropy liquid crystal group of elastic constant
Object is closed, the fast corresponding time is possessed using the liquid crystal display of the liquid crystal.
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 the method preparation by mixing different component at high temperature and being soluble in one another, wherein by liquid crystal group
It closes object to dissolve in solvent in the solvent used 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, such as wherein the lesser component of content will be dissolved in content at a higher temperature
In biggish main component, or each affiliated component dissolved in organic solvent, such as acetone, chloroform or methanol, it then will be molten
It is obtained after liquid mixing removal solvent.
Liquid-crystal composition of the present invention have low rotary viscosity, big elastic constant, good low temperature intersolubility and
Fast response speed can be used for the fast-response liquid crystal display of plurality of display modes, be preferably applied to IPS, FFS or VA type liquid crystal
Showing device.Composition of the present invention is in the classes VA type liquid crystal display such as above-mentioned liquid crystal display device, especially MVA, PVA, PSVA
Use in device can be obviously improved liquid crystal display display effect.
Specific embodiment
The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention..
Unless otherwise indicated, percentage is weight percentage in the present invention；Temperature unit is degree Celsius；△ n represents optics
Anisotropy (25 DEG C)；△ 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 is indicated in liquid-crystal compounds.
Table 1: the group structure code of liquid-crystal compounds
By taking following compound structure as an example:
It indicates are as follows: 4MO2
It indicates are as follows: 3CPWO1
In following embodiment, the preparation of liquid-crystal composition is all made of heat of solution method, comprising the following steps: 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 successively weighed to low sequence, heating stirring melts each component uniformly at 60~100 DEG C, using filter, rotate,
It finally encapsulates up to target sample.
In following embodiment, the performance parameter of the weight percent of each component when liquid-crystal composition is shown in liquid-crystal composition
Following table.
In following embodiment, related all components are known liquid-crystal compounds, can be provided by Beijing Bayi Space.
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 11: 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
Comparative example 1
Table 15: 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 16.
Table 16: the performance parameter of liquid-crystal composition compares
| Δn | Δε | Cp | γ1 | K11 | K22 | K33 | |
| Embodiment 1 | 0.101 | -2.8 | 75 | 47 | 13.6 | 6.8 | 13.8 |
| Comparative example 1 | 0.098 | -2.7 | 76 | 65 | 11.8 | 5.9 | 13.6 |
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, the liquid-crystal composition provided by the present invention containing dibenzofurans liquid-crystal compounds,
With low viscosity, high resistivity, suitable optical anisotropy, good low temperature intersolubility, big elastic constant and excellent
Photostability and thermal stability, the response time of liquid crystal display can be reduced, so that it is slow to solve liquid crystal display response speed
The problem of.Therefore, liquid-crystal composition provided by the present invention is suitable for IPS and FFS and MVA, PVA, PSVA of fast-response etc.
VA type liquid crystal display device, the liquid crystal display device especially suitable for fast-response.
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, fall within the scope of the claimed invention without departing from theon the basis of the spirit of the present invention.
Claims (28)
1. a kind of negative dielectric anisotropy liquid crystal composition containing benzofuran, it is characterised in that: the liquid-crystal composition is pressed
Parts by weight meter, including following components: compound representated by 1~11 part of general formula I, chemical combination representated by 20~50 parts of general formula II
Object, compound representated by 0~15 part of general formula III, compound representated by 3~20 parts of general formula IV, 0~30 part of general formula V institute's generation
The compound of table, compound representated by 0~15 part of general formula VI, compound representated by 5~50 parts of general formula VII, 0~40 part logical
Compound representated by Formula IX；
R1、R2It is independently represented each other C1~C12Straight chained alkyl, wherein one or more non-conterminous CH2It can be by O, S or CH
Replaced=CH；
And include at least a kind of compounds of formula II:
R3、R4It is independently represented each other C1~C12Straight chained alkyl, wherein one or more non-conterminous CH2It can be by O, S or CH
Replaced=CH；A1、A2It is independently represented each other trans- 1,4- cyclohexyl or 1,4- phenylene；
R5、R6It is independently represented each other C1~C12Straight chained alkyl, wherein one or more non-conterminous CH2It can be by O or CH=
CH replaces；
A3Selected from flowering structure:
Wherein, R7、R8It is independently represented each other C1~C12Straight chained alkyl, alkoxy or C2~C12Straight-chain alkenyl；A41 is represented,
4- cyclohexylidene or Isosorbide-5-Nitrae-phenylene；Z1Represent singly-bound, CH2CH2Or CH2O；
Wherein, R9、R10It is independently represented each other C1~C12Straight chained alkyl；
Wherein, R11、R12It is independently represented each other C1~C12Straight chained alkyl or unbranched alkoxy；L1Represent H or F；
Wherein R13、R14It is independently represented each other C1~C12Straight chained alkyl, unbranched alkoxy or C2~C12Straight-chain alkenyl；A5Choosing
From with flowering structure:
A6Selected from flowering structure:
Wherein, R17、R18It is independently represented each other C1~C12Straight chained alkyl, unbranched alkoxy or C2~C12Straight-chain alkenyl.
2. the liquid-crystal composition according to claim 1, it is characterised in that: compound representated by general formula I is selected from down
The one or more of representative compound in formula:
Wherein, R1Represent C1~C7Straight chained alkyl, R2Reference with claim 1.
3. the liquid-crystal composition according to claim 2, it is characterised in that: the choosing of compound representated by the general formula I
The one or more of representative compound from following formula:
4. liquid-crystal composition according to claim 1 or 2, it is characterised in that: the choosing of compound representated by the general formula II
From the one or more of following compound:
Wherein, R3Represent C1~C7Straight chained alkyl；R4Represent C1~C7Straight chained alkyl, unbranched alkoxy or C2~C7Straight chain
Alkenyl.
5. the liquid-crystal composition according to claim 4, it is characterised in that: the choosing of compound representated by the general formula II
The one or more of the compound representated by Formula II A1~Formula II C24:
6. the liquid-crystal composition described in any one of -3,5 according to claim 1, it is characterised in that: representated by general formula III
Compound be selected from one of formula III A~formula III C or a variety of:
Wherein, R5Represent C2~C10Straight chained alkyl or straight-chain alkenyl；R6Represent C1~C8Straight chained alkyl.
7. the liquid-crystal composition according to claim 6, it is characterised in that: compound representated by general formula III is selected from formula
One of IIIA1~formula III C30 structure is a variety of:
8. the liquid-crystal composition described in any one of -3,5,7 according to claim 1, it is characterised in that: representated by general formula IV
Compound be selected from one of following compound or a variety of:
Wherein, R7Represent C1~C7Straight chained alkyl or C2~C7Straight-chain alkenyl；R8Represent C1~C7Straight chained alkyl or straight chain alkane
Oxygroup.
9. the liquid-crystal composition according to claim 8, it is characterised in that: compounds of formula IV be selected from formula IV A1~
One of formula IV D16 or a variety of；
10. the liquid-crystal composition described in any one of -3,5,7,9 according to claim 1, it is characterised in that: general formula V institute's generation
The compound of table is selected from one of flowering structure or a variety of:
11. the liquid-crystal composition described in any one of -3,5,7,9 according to claim 1, it is characterised in that: general formula VI institute
The compound of representative is selected from one of VIA and VIB or a variety of:
Wherein, R11、R12It is independently represented each other C1~C7Straight chained alkyl or unbranched alkoxy.
12. the liquid-crystal composition according to claim 11, it is characterised in that: R11、R12It is independently represented each other C1~
C5Straight chained alkyl or unbranched alkoxy.
13. the liquid-crystal composition described in any one of -3,5,7,9,12 according to claim 1, it is characterised in that: general formula
Compound representated by VII is selected from one of flowering structure or a variety of:
Wherein, R13Represent C1~C7Straight chained alkyl or C2~C7Straight-chain alkenyl；R14Represent C1~C7Straight chained alkyl or straight chain
Alkoxy.
14. the liquid-crystal composition according to claim 13, it is characterised in that: R13Represent C2~C5Straight chained alkyl or
Straight-chain alkenyl；R14Represent C1~C5Straight chained alkyl or unbranched alkoxy.
15. any one of -3,5,7,9,12,14 any one liquid-crystal composition according to claim 1, it is characterised in that: institute
Stating liquid-crystal composition also includes compound representated by one or more general formula VIII:
Wherein, R15、R16It is independently represented each other C1~C12Straight chained alkyl；L2、L3It is independently represented each other H or F；A71 is represented,
4- cyclohexyl or Isosorbide-5-Nitrae-phenylene.
16. liquid-crystal composition according to claim 15, it is characterised in that: compound representated by general formula VIII is selected from following
Structure it is one or more:
Wherein, R15、R16It is independently represented each other C1~C7Straight chained alkyl.
17. 6 liquid-crystal composition according to claim 1, it is characterised in that: R15、R16It is independently represented each other C2~C5It is straight
Alkyl group.
18. liquid-crystal composition according to claim 1, it is characterised in that: R17Represent C2~C7Straight-chain alkenyl or straight chain alkane
Base；R18Represent C1~C7Straight chained alkyl or unbranched alkoxy.
19. 8 liquid-crystal composition according to claim 1, it is characterised in that: R17Represent C2~C5Straight chained alkyl or straight chain alkene
Base；R18Represent C1~C5Straight chained alkyl or unbranched alkoxy.
20. according to claim 1-3,5,7,9,12,14, liquid-crystal composition described in any one of 16-19, it is characterised in that: packet
Following components: compound representated by 2~11 parts of general formula I is included, compound representated by 27~40 parts of general formula II, 0~10 part logical
Compound representated by formula III, compound representated by 5~16 parts of general formula IV, compound representated by 0~25 part of general formula V, 0
Compound representated by~10 parts of general formula VI, compound representated by 7~48 parts of general formula VII, representated by 0~33 part of general formula IX
Compound.
21. liquid-crystal composition according to claim 15, it is characterised in that: the liquid-crystal composition by weight, including
Following components: compound representated by 3~30 parts of general formula I, compound representated by 20~55 parts of general formula II, 5~25 parts of general formulas
Compound representated by III, compound representated by 3~20 parts of general formula IV, compound representated by 0~15 part of general formula V, 5~
Compound representated by 45 parts of general formula VII, compound representated by 0~10 part of general formula VIII, representated by 0~40 part of general formula IX
Compound.
22. the liquid-crystal composition according to claim 21, it is characterised in that: the liquid-crystal composition includes following components: 5~
Compound representated by 25 parts of general formula I, compound representated by 29~53 parts of general formula II, change representated by 6~21 parts of general formula IIIs
Object is closed, compound representated by 3~16 parts of general formula IV, compound representated by 0~10 part of general formula V, 5~40 parts of general formula VII institutes
The compound of representative, compound representated by 0~8 part of general formula VIII, compound representated by 0~33 part of general formula IX.
23. according to claim 1-3,5,7,9,12,14, liquid-crystal composition described in any one of 16-19, it is characterised in that: institute
Liquid-crystal composition is stated by weight, including following components: compound representated by 1~15 part of general formula I, 20~40 parts of general formula II
Representative compound, compound representated by 1~20 part of general formula IV, compound representated by 0~30 part of general formula V, 0~15 part
Compound representated by general formula VI, compound representated by 25~60 parts of general formula VII.
24. the liquid-crystal composition according to claim 23, it is characterised in that: the liquid-crystal composition includes following components: 2~
Compound representated by 14 parts of general formula I, compound representated by 27~36 parts of general formula II, change representated by 2~15 parts of general formula IV
Object is closed, compound representated by 0~25 part of general formula V, compound representated by 0~10 part of general formula VI, 29~54 parts of general formula VII institutes
The compound of representative.
25. the liquid-crystal composition according to claim 24, it is characterised in that: the liquid-crystal composition includes following components: 2~
Compound representated by 14 parts of general formula I, compound representated by 27~36 parts of general formula II, change representated by 2~14 parts of general formula IV
Object is closed, compound representated by 6~25 parts of general formula V, compound representated by 29~48 parts of general formula VII.
26. application of any one of the claim 1-24 liquid-crystal composition in liquid crystal display device.
27. application according to claim 26, it is characterised in that: the liquid crystal display device is IPS, FFS or VA type liquid
Crystal device.
28. application according to claim 27, it is characterised in that: the VA type liquid crystal display device be MVA, PVA or
PSVA liquid crystal display device.
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| CN107446591A (en) * | 2016-05-31 | 2017-12-08 | 北京八亿时空液晶科技股份有限公司 | A kind of liquid-crystal composition containing dibenzofurans class compound and its application |
| CN109423303B (en) * | 2017-08-22 | 2021-09-14 | 北京八亿时空液晶科技股份有限公司 | Negative dielectric liquid crystal composition containing benzofuran compound and application thereof |
| JP7073649B2 (en) * | 2017-08-23 | 2022-05-24 | Dic株式会社 | Method for manufacturing liquid crystal composition |
| CN109652097B (en) * | 2018-05-18 | 2023-06-02 | 石家庄诚志永华显示材料有限公司 | Liquid crystal composition, liquid crystal display element and liquid crystal display |
| CN110117277B (en) * | 2019-01-24 | 2022-12-30 | 河北迈尔斯通电子材料有限公司 | Negative liquid crystal monomer and preparation method thereof |
| CN111732569A (en) * | 2019-03-25 | 2020-10-02 | 捷恩智株式会社 | Liquid crystalline compound having dibenzothiophene ring, liquid crystal composition, and liquid crystal display element |
| CN113512428A (en) * | 2020-04-09 | 2021-10-19 | 北京八亿时空液晶科技股份有限公司 | Liquid crystal composition with negative dielectric anisotropy and application thereof |
| CN115247067B (en) * | 2021-04-27 | 2024-04-23 | 江苏和成显示科技有限公司 | Liquid crystal compound, liquid crystal composition thereof and liquid crystal display device |
| CN113913194B (en) * | 2021-10-22 | 2023-04-14 | 北京云基科技股份有限公司 | Fluorine-containing liquid crystal compound and application thereof |
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| CN1912052A (en) * | 2005-08-09 | 2007-02-14 | 默克专利股份有限公司 | Liquid-crystalline medium |
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| CN1912052A (en) * | 2005-08-09 | 2007-02-14 | 默克专利股份有限公司 | Liquid-crystalline medium |
| CN104926765A (en) * | 2014-03-17 | 2015-09-23 | 默克专利股份有限公司 | 4,6-difluorodibenzofuran derivatives |
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