CN109913239A - A kind of positive and negative mixed liquid crystal composition and its application - Google Patents
A kind of positive and negative mixed liquid crystal composition and its application Download PDFInfo
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- CN109913239A CN109913239A CN201711321577.2A CN201711321577A CN109913239A CN 109913239 A CN109913239 A CN 109913239A CN 201711321577 A CN201711321577 A CN 201711321577A CN 109913239 A CN109913239 A CN 109913239A
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Abstract
The present invention relates to a kind of positive and negative mixed liquid crystal composition and its applications.Provided liquid-crystal composition has big vertical dielectric, and then the ratio with lower parallel dielectric and vertical dielectric, further has higher transmitance.Therefore, IPS the or FFS type TFT liquid crystal display device that liquid-crystal composition provided by the present invention is suitable for, can be obviously improved the transmitance of liquid crystal display, reduce the energy loss of backlight, especially suitable for FFS type liquid crystal display.
Description
Technical field
The present invention relates to a kind of liquid-crystal compositions, specifically, liquid-crystal composition provided by the present invention is used for liquid crystal
Show the transmitance that liquid crystal display can be obviously improved in device.
Background technique
Currently, LCD product technology is mature, the technologies such as visual angle, resolution ratio, color saturation and brightness are successfully solved
Problem, display performance already close to or be more than CRT monitor.Large scale and small-medium size LCD respective field gradually
Occupy the dominant position of flat-panel monitor.Liquid crystal belongs to passive luminescence display, that is to say, that liquid crystal display panel played is photoswitch
Effect, light pass through liquid crystal display panel after transmitance be 6% or so, in order to promote brightness, need to reinforce backlight illumination, Jin Erxu
More electric energy are consumed for promoting backlight illumination, this greatly improves the energy consumption of backlight, the energy consumption 95% of liquid crystal display
It is used for backlight above, the transmitance for promoting liquid crystal display to be highly effective for the energy consumption for reducing liquid crystal display.With energy
Source consumption and environmental protection are increasingly taken seriously, and the energy consumption problem for reducing liquid crystal display more receives concern.So being promoted
The transmitance of liquid crystal display panel becomes the focus of current liquid crystal display.
Specifically, reducing liquid-crystal composition for IPS (converting in face) and FFS (fringing field effect) mode display
ε‖|ε⊥(ratio of parallel dielectric and vertical dielectric) can effectively promote the transmitance of liquid crystal display.It is provided by the present invention
Liquid-crystal composition significantly reduce the ε of liquid-crystal composition‖|ε⊥, play the good effect for promoting transmitance.
Summary of the invention
Liquid-crystal composition provided by the present invention significantly reduces the ε of liquid-crystal composition‖|ε⊥(parallel dielectric with it is vertical
The ratio of dielectric), play the good effect for promoting transmitance.Exactly liquid-crystal composition provided by the present invention has big
Vertical dielectric, and then have high transmitance.
Specifically, the present invention provides a kind of liquid-crystal composition, and the composition includes chemical combination representated by least one general formula I
Object:
Wherein, R1Independently represent C1~C12Straight chained alkyl, wherein one or more non-conterminous CH2It can respectively solely
On the spot replaced O, S or CH=CH；X1It is independently represented each other F, CF3、OCF3；
And including at least compound representated by a kind of general formula II:
Wherein, R2、R3It is independently represented each other C1~C12Straight chained alkyl, unbranched alkoxy or C2~C12Straight-chain alkenyl；
A1It is independently represented each other trans- 1,4- cyclohexyl or 1,4- phenylene.
And including at least compound representated by a kind of general formula III:
Wherein, R4、R5Independently represent C1~C12Straight chained alkyl, wherein one or more non-conterminous CH2It can be respective
Independently replaced O, S or CH=CH；A2、A3It is independently represented each other trans- 1,4- cyclohexyl or 1,4- phenylene.
Compound representated by general formula I has big optical anisotropy and big dielectric anisotropy.
Specifically, compound representated by general formula I is selected from one of Formulas I A~IC or a variety of:
Wherein, R1It is independently represented each other C1~C7Straight chained alkyl；
Preferably, compound representated by general formula I is selected from one of IA1~IC5 or a variety of:
It is highly preferred that compound representated by general formula I is selected from one of IA2, IA3, IA5, IC2, IC3 or a variety of；It is special
One or both of not preferred IA2, IA3.
Structure representated by general formula II provided by the present invention is the liquid-crystal compounds for containing 2,3- difluorobenzene structure, such
Structure has big vertical dielectric, can effectively promote the vertical dielectric of liquid-crystal composition, specifically, chemical combination representated by general formula II
Object is selected from one of IIA~IIB or a variety of:
Wherein, R2Represent C1~C7Straight chained alkyl or C2~C7Straight-chain alkenyl；R3Represent C1~C7Straight chained alkyl or straight
Chain alkoxy.
Preferably, compound representated by general formula II is selected from one of IIA1~IIB36 or a variety of:
It is highly preferred that compound representated by general formula II be selected from IIA1, IIA2, IIA14, IIA19, IIA20, IIA21,
One of IIA22, IIA26, IIB19, IIB20, IIB32 or a variety of；Particularly preferred IIA19, IIA20, IIA21, IIB19,
One of IIB20 or a variety of.
Compound representated by general formula III provided by the present invention has low-down rotary viscosity, specifically, general formula
Compound representated by III is selected from one of IIIA~IIIC or a variety of:
Wherein, R4It is independently represented each other C1~C7Straight chained alkyl；R5It is independently represented each other C1~C7Straight chained alkyl,
Unbranched alkoxy or C2~C7Straight-chain alkenyl.
Preferably, compound representated by general formula III is selected from one of formula III A1~IIIC38 or a variety of:
It is highly preferred that compound representated by general formula III be selected from formula III A2, IIIA4, IIIA6, IIIA8, IIIA14,
IIIA22、IIIA26、IIIA27、IIIB14、IIIB18、IIIB22、IIIC2、IIIC4、IIIC6、IIIC22、IIIC26、
One of IIIC29, IIIC30 or a variety of；Particularly preferred IIIA2, IIIA6, IIIA14, IIIB22, IIIC4, IIIC29,
One of IIIC30 or a variety of.
Liquid-crystal composition provided by the present invention also includes compound representated by one or more general formula IV:
Wherein, R6、R7It is independently represented each other C1~C12Straight chained alkyl, unbranched alkoxy or C2~C12Straight-chain alkenyl；
A4It is independently represented each other trans- Isosorbide-5-Nitrae-cyclohexyl, Isosorbide-5-Nitrae-phenylene, wherein one or more H atoms can be taken by F on phenyl ring
Generation.
Compound representated by general formula IV provided by the invention is tricyclic neutral monomer, specifically, representated by general formula IV
Compound is selected from one of IVA~IVC or a variety of:
In the general formula IVA~IVC: R6Independently represent C2~C7Straight chained alkyl or C2~C7Straight-chain alkenyl；R7It is independent
Ground represents C1~C8Straight chained alkyl.
It is further preferred that compound representated by the general formula IV is selected from general formula IVA1~IVA18, IVB1~IVB22 institute
One of compound of representative is a variety of:
It is highly preferred that compounds of formula IV provided by the present invention be selected from formula IV A1, IVA2, IVA8, IVA12,
One of IVA16, IVB5, IVB12, IVB16, IVB18 or a variety of；Particularly preferred formula IV A1, IVA2, IVA8, IVB12,
One of IVB16 or a variety of.
Liquid-crystal composition provided by the present invention can also include the compound that one or more general formula V are included:
Wherein, R8It is independently represented each other C1~C12Straight chained alkyl, unbranched alkoxy or C2~C12Straight-chain alkenyl；A5
It is independently represented each other trans- Isosorbide-5-Nitrae-cyclohexyl or Isosorbide-5-Nitrae-phenylene, wherein one or more H atoms on phenyl ring can be by F original
Son replaces.
Specifically, compound representated by general formula V is selected from one of VA~VC or a variety of:
Wherein, R8It is independently represented each other C1~C7Straight chained alkyl, unbranched alkoxy or C2~C7Straight-chain alkenyl；It is more excellent
Select C2~C5Straight chained alkyl or straight-chain alkenyl.
Liquid-crystal composition provided by the present invention also includes compound representated by one or more general formula VI:
Wherein, R9It is independently represented each other C1~C12Straight chained alkyl, unbranched alkoxy or C2~C12Straight-chain alkenyl；L1、
L2It is independently represented each other F or H；X2It is independently represented each other F or OCF3；A6Be independently represented each other trans- 1,4- cyclohexyl or
Isosorbide-5-Nitrae-phenylene, wherein one or more H atoms on phenyl ring can be replaced by F atom.
Specifically, compound representated by general formula VI is selected from one of VIA~VIH or a variety of:
Wherein, R9It is independently represented each other C1~C7Straight chained alkyl；It is preferred that C2~C5Straight chained alkyl.
Liquid-crystal composition provided by the present invention also includes compound representated by one or more general formula VII:
Wherein, R10、R11It is independently represented each other C1~C12Straight chained alkyl or C2~C12Straight-chain alkenyl；L3It is respectively independent
Ground represents H or F.
Compound representated by general formula VII has biggish optical anisotropy and high clearing point；Specifically, general formula
Compound representated by VII is selected from one of VIIA or VIIB or a variety of.
Wherein, R10、R11It is independently represented each other C1~C7Straight chained alkyl；It is preferred that C2~C5Straight chained alkyl.
Liquid-crystal composition provided by the present invention can also include compound representated by one or more general formula VIII:
Wherein, R12It is independently represented each other C1~C12Straight chained alkyl or C2~C12Straight-chain alkenyl；R13Each independently
Represent F, C1~C12Straight chained alkyl or C2~C12Straight-chain alkenyl；
Compound representated by general formula VIII has big optical anisotropy, specifically, change representated by general formula VIII
It closes object and is selected from one of VIIIA~VIIIE or a variety of:
Wherein, R12、R13It is independently represented each other C1~C7Straight chained alkyl；It is preferred that C1~C5Straight chained alkyl.
Liquid-crystal composition provided by the present invention can also include compound representated by one or more general formula IX:
Wherein, R14It is independently represented each other C1~C12Straight chained alkyl；N=0 or 1；L4It is independently represented each other H or CH3；
A7、A8、A9It is independently represented each other:
Compound representated by general formula IX has big dielectric anisotropy, and specifically, compounds of formula IX is selected from IXA
One of~IXH or a variety of:
Wherein, R14It is independently represented each other C1~C7Straight chained alkyl；It is preferred that C2~C5Straight chained alkyl.
Specifically, liquid-crystal composition of the present invention preferably comprises the ingredient of following weight percent:
Compound representated by (1) 1~30% general formula I；
Compound representated by (2) 1~40% general formula II；
Compound representated by (3) 20~70% general formula IIIs；
Compound representated by (4) 0~30% general formula IV；
Compound representated by (5) 0~20% general formula V；
Compound representated by (6) 0~20% general formula VI；
Compound representated by (7) 0~20% general formula VII；
Compound representated by (8) 0~20% general formula VIII；
Compound representated by (9) 0~35% general formula IX.
Preferably, liquid-crystal composition of the present invention includes the ingredient of following weight percent:
Compound representated by (1) 2~25% general formula I；
Compound representated by (2) 3~34% general formula II；
Compound representated by (3) 40~65% general formula IIIs；
Compound representated by (4) 0~20% general formula IV；
Compound representated by (5) 0~10% general formula V；
Compound representated by (6) 0~12% general formula VI；
Compound representated by (7) 0~10% general formula VII；
Compound representated by (8) 0~15% general formula VIII；
Compound representated by (9) 0~30% general formula IX.
It is highly preferred that liquid-crystal composition of the present invention includes the ingredient of following weight percent:
Compound representated by (1) 3~21% general formula I；
Compound representated by (2) 5~27% general formula II；
Compound representated by (3) 46~59% general formula IIIs；
Compound representated by (4) 0~14% general formula IV；
Compound representated by (5) 0~5% general formula V；
Compound representated by (6) 0~6% general formula VI；
Compound representated by (7) 0~5% general formula VII；
Compound representated by (8) 0~11% general formula VIII；
Compound representated by (9) 0~24% general formula IX.
Preferably, liquid-crystal composition of the present invention includes the ingredient of following weight percent:
Compound representated by (1) 14~25% general formula I；
Compound representated by (2) 10~30% general formula II；
Compound representated by (3) 45~60% general formula IIIs；
Compound representated by (4) 0~15% general formula IV；
Compound representated by (5) 0~8% general formula V；
Compound representated by (6) 0~9% general formula VI；
Compound representated by (7) 0~7% general formula VII；
Compound representated by (8) 0~15% general formula VIII；
Compound representated by (9) 0~15% general formula IX.
It is highly preferred that liquid-crystal composition of the present invention includes the ingredient of following weight percent:
Compound representated by (1) 14~21% general formula I；
Compound representated by (2) 12~27% general formula II；
Compound representated by (3) 48~56% general formula IIIs；
Compound representated by (4) 0~9% general formula IV；
Compound representated by (5) 0~5% general formula V；
Compound representated by (6) 0~5% general formula VI；
Compound representated by (7) 0~4% general formula VII；
Compound representated by (8) 0~10% general formula VIII；
Compound representated by (9) 0~9% general formula IX.
Preferably, liquid-crystal composition of the present invention includes the ingredient of following weight percent:
Compound representated by (1) 2~16% general formula I；
Compound representated by (2) 3~30% general formula II；
Compound representated by (3) 40~65% general formula IIIs；
Compound representated by (4) 0~18% general formula IV；
Compound representated by (5) 0~8% general formula V；
Compound representated by (6) 0~9% general formula VI；
Compound representated by (7) 0~8% general formula VII；
Compound representated by (8) 0~15% general formula VIII；
Compound representated by (9) 0~30% general formula IX.
It is highly preferred that liquid-crystal composition of the present invention includes the ingredient of following weight percent:
Compound representated by (1) 3~16% general formula I；
Compound representated by (2) 5~27% general formula II；
Compound representated by (3) 46~59% general formula IIIs；
Compound representated by (4) 0~14% general formula IV；
Compound representated by (5) 0~5% general formula V；
Compound representated by (6) 0~6% general formula VI；
Compound representated by (7) 0~5% general formula VII；
Compound representated by (8) 0~11% general formula VIII；
Compound representated by (9) 0~24% general formula IX.
Preferably, liquid-crystal composition of the present invention includes the ingredient of following weight percent:
Compound representated by (1) 2~25% general formula I；
Compound representated by (2) 14~30% general formula II；
Compound representated by (3) 48~63% general formula IIIs；
Compound representated by (4) 0~15% general formula IV；
Compound representated by (5) 0~8% general formula V；
Compound representated by (6) 0~8% general formula VI；
Compound representated by (7) 0~8% general formula VII；
Compound representated by (8) 0~10% general formula VIII；
Compound representated by (9) 0~12% general formula IX.
It is highly preferred that liquid-crystal composition of the present invention includes the ingredient of following weight percent:
Compound representated by (1) 3~21% general formula I；
Compound representated by (2) 14~27% general formula II；
Compound representated by (3) 52~58% general formula IIIs；
Compound representated by (4) 0~9% general formula IV；
Compound representated by (5) 0~5% general formula V；
Compound representated by (6) 0~5% general formula VI；
Compound representated by (7) 0~4% general formula VII；
Compound representated by (8) 0~5% general formula VIII；
Compound representated by (9) 0~7% general formula IX.
Preferably, liquid-crystal composition of the present invention includes the ingredient of following weight percent:
Compound representated by (1) 2~17% general formula I；
Compound representated by (2) 3~20% general formula II；
Compound representated by (3) 40~64% general formula IIIs；
Compound representated by (4) 0~18% general formula IV；
Compound representated by (5) 0~8% general formula V；
Compound representated by (6) 0~9% general formula VI；
Compound representated by (7) 0~10% general formula VII；
Compound representated by (8) 0~15% general formula VIII；
Compound representated by (9) 0~29% general formula IX.
It is highly preferred that liquid-crystal composition of the present invention includes the ingredient of following weight percent:
Compound representated by (1) 3~17% general formula I；
Compound representated by (2) 5~15% general formula II；
Compound representated by (3) 46~59% general formula IIIs；
Compound representated by (4) 0~14% general formula IV；
Compound representated by (5) 0~5% general formula V；
Compound representated by (6) 0~6% general formula VI；
Compound representated by (7) 0~5% general formula VII；
Compound representated by (8) 0~11% general formula VIII；
Compound representated by (9) 0~24% general formula IX.
Preferably, liquid-crystal composition of the present invention includes the ingredient of following weight percent:
Compound representated by (1) 2~20% general formula I；
Compound representated by (2) 3~30% general formula II；
Compound representated by (3) 40~65% general formula IIIs；
Compound representated by (4) 1~18% general formula IV；
Compound representated by (5) 0~8% general formula V；
Compound representated by (6) 0~9% general formula VI；
Compound representated by (7) 0~8% general formula VII；
Compound representated by (8) 0~15% general formula VIII；
Compound representated by (9) 0~29% general formula IX.
It is highly preferred that liquid-crystal composition of the present invention includes the ingredient of following weight percent:
Compound representated by (1) 3~16% general formula I；
Compound representated by (2) 5~25% general formula II；
Compound representated by (3) 46~59% general formula IIIs；
Compound representated by (4) 1~14% general formula IV；
Compound representated by (5) 0~5% general formula V；
Compound representated by (6) 0~6% general formula VI；
Compound representated by (7) 0~5% general formula VII；
Compound representated by (8) 0~11% general formula VIII；
Compound representated by (9) 0~24% general formula IX.
Preferably, liquid-crystal composition of the present invention includes the ingredient of following weight percent:
Compound representated by (1) 13~25% general formula I；
Compound representated by (2) 8~30% general formula II；
Compound representated by (3) 43~60% general formula IIIs；
Compound representated by (4) 0~8% general formula V；
Compound representated by (5) 0~8% general formula VI；
Compound representated by (6) 0~9% general formula VII；
Compound representated by (7) 0~15% general formula VIII；
Compound representated by (8) 0~15% general formula IX.
It is highly preferred that liquid-crystal composition of the present invention includes the ingredient of following weight percent:
Compound representated by (1) 16~21% general formula I；
Compound representated by (2) 12~27% general formula II；
Compound representated by (3) 48~55% general formula IIIs；
Compound representated by (4) 0~5% general formula V；
Compound representated by (5) 0~5% general formula VI；
Compound representated by (6) 0~4% general formula VII；
Compound representated by (7) 0~10% general formula VIII；
Compound representated by (8) 0~9% general formula IX.
Preferably, liquid-crystal composition of the present invention includes the ingredient of following weight percent:
Compound representated by (1) 2~20% general formula I；
Compound representated by (2) 10~32% general formula II；
Compound representated by (3) 45~63% general formula IIIs；
Compound representated by (4) 0~15% general formula IV；
Compound representated by (5) 1~10% general formula V；
Compound representated by (6) 0~8% general formula VII；
Compound representated by (7) 0~10% general formula VIII；
Compound representated by (8) 0~12% general formula IX.
It is highly preferred that liquid-crystal composition of the present invention includes the ingredient of following weight percent:
Compound representated by (1) 3~16% general formula I；
Compound representated by (2) 14~27% general formula II；
Compound representated by (3) 52~58% general formula IIIs；
Compound representated by (4) 0~9% general formula IV；
Compound representated by (5) 3~5% general formula V；
Compound representated by (6) 0~4% general formula VII；
Compound representated by (7) 0~5% general formula VIII；
Compound representated by (8) 0~7% general formula IX.
Preferably, liquid-crystal composition of the present invention includes the ingredient of following weight percent:
Compound representated by (1) 2~25% general formula I；
Compound representated by (2) 3~32% general formula II；
Compound representated by (3) 40~63% general formula IIIs；
Compound representated by (4) 0~19% general formula IV；
Compound representated by (5) 0~10% general formula VI；
Compound representated by (6) 0~8% general formula VII；
Compound representated by (7) 0~15% general formula VIII；
Compound representated by (8) 0~30% general formula IX.
It is highly preferred that liquid-crystal composition of the present invention includes the ingredient of following weight percent:
Compound representated by (1) 4~21% general formula I；
Compound representated by (2) 5~27% general formula II；
Compound representated by (3) 46~59% general formula IIIs；
Compound representated by (4) 0~14% general formula IV；
Compound representated by (5) 0~6% general formula VI；
Compound representated by (6) 0~5% general formula VII；
Compound representated by (7) 0~11% general formula VIII；
Compound representated by (8) 0~24% general formula IX.
Preferably, liquid-crystal composition of the present invention includes the ingredient of following weight percent:
Compound representated by (1) 3~25% general formula I；
Compound representated by (2) 5~32% general formula II；
Compound representated by (3) 48~64% general formula IIIs；
Compound representated by (4) 0~15% general formula IV；
Compound representated by (5) 0~10% general formula V；
Compound representated by (6) 0~10% general formula VI；
Compound representated by (7) 0~8% general formula VII；
Compound representated by (8) 0~15% general formula VIII.
It is highly preferred that liquid-crystal composition of the present invention includes the ingredient of following weight percent:
Compound representated by (1) 5~21% general formula I；
Compound representated by (2) 9~27% general formula II；
Compound representated by (3) 52~59% general formula IIIs；
Compound representated by (4) 0~10% general formula IV；
Compound representated by (5) 0~5% general formula V；
Compound representated by (6) 0~6% general formula VI；
Compound representated by (7) 0~4% general formula VII；
Compound representated by (8) 0~11% general formula VIII.
Preferably, liquid-crystal composition of the present invention includes the ingredient of following weight percent:
Compound representated by (1) 2~22% general formula I；
Compound representated by (2) 3~31% general formula II；
Compound representated by (3) 40~63% general formula IIIs；
Compound representated by (4) 0~19% general formula IV；
Compound representated by (5) 0~10% general formula V；
Compound representated by (6) 0~8% general formula VI；
Compound representated by (7) 0~9% general formula VII；
Compound representated by (8) 0~15% general formula VIII；
Compound representated by (9) 1~30% general formula IX.
It is highly preferred that liquid-crystal composition of the present invention includes the ingredient of following weight percent:
Compound representated by (1) 3~17% general formula I；
Compound representated by (2) 5~27% general formula II；
Compound representated by (3) 46~58% general formula IIIs；
Compound representated by (4) 0~14% general formula IV；
Compound representated by (5) 0~5% general formula V；
Compound representated by (6) 0~4% general formula VI；
Compound representated by (7) 0~5% general formula VII；
Compound representated by (8) 0~10% general formula VIII；
Compound representated by (9) 5~24% general formula IX.
Preferably, liquid-crystal composition of the present invention includes the ingredient of following weight percent:
Compound representated by (1) 10~26% general formula I；
Compound representated by (2) 10~30% general formula II；
Compound representated by (3) 48~60% general formula IIIs；
Compound representated by (4) 0~12% general formula IV；
Compound representated by (5) 1~7% general formula V；
Compound representated by (6) 0~8% general formula VII.
It is highly preferred that liquid-crystal composition of the present invention includes the ingredient of following weight percent:
Compound representated by (1) 14~16% general formula I；
Compound representated by (2) 14~27% general formula II；
Compound representated by (3) 52~56% general formula IIIs；
Compound representated by (4) 0~9% general formula IV；
Compound representated by (5) 3~5% general formula V；
Compound representated by (6) 0~4% general formula VII.
As one of preferred embodiment for the present invention, the liquid-crystal composition includes the ingredient of following weight percent:
Compound representated by (1) 16~17% general formula I；
Compound representated by (2) 25~27% general formula II；
Compound representated by (3) 52~54.5% general formula IIIs；
Compound representated by (4) 0~5% general formula V；
Compound representated by (5) 0~5% general formula VI；
Compound representated by (6) 0~4.5% general formula VIII；
Compound representated by (7) 0~5% general formula IX；
Or, the liquid-crystal composition includes the ingredient of following weight percent:
Compound representated by (1) 16~17% general formula I；
Compound representated by (2) 25~27% general formula II；
Compound representated by (3) 52~58% general formula IIIs；
Compound representated by (4) 0~3% general formula IV；
Compound representated by (5) 4~5% general formula V；
Compound representated by (6) 0~2.5% general formula VII；
Or, the liquid-crystal composition includes the ingredient of following weight percent:
Compound representated by (1) 5~17% general formula I；
Compound representated by (2) 5~25% general formula II；
Compound representated by (3) 46~59% general formula IIIs；
Compound representated by (4) 0~14% general formula IV；
Compound representated by (5) 0~5% general formula V；
Compound representated by (6) 0~6% general formula VI；
Compound representated by (7) 0~4% general formula VII；
Compound representated by (8) 0~11% general formula VIII；
Compound representated by (9) 0~24% general formula IX.
Compound representated by liquid-crystal composition formula of I provided by the present invention is how fluorine-substituted terphenyl structure
Object is closed, such compound has big dielectric anisotropy and optical anisotropy, each for the dielectric for promoting liquid-crystal composition
Anisotropy and optical anisotropy are highly effective, and structure representated by general formula II includes 2,3- difluorobenzene structural compounds, such
Compound has big vertical dielectric, for promoting the vertical dielectric of liquid-crystal composition, promotes liquid crystal display transmitance very
Effectively；Compound representated by general formula III is dicyclohexyl structure, has the characteristics that low rotary viscosity and excellent intersolubility,
It is the essential component of fast-response liquid crystal display；Structure representated by general formula IV is tricyclic neutrality liquid-crystal compounds, such change
Object clearing point with higher and big elastic constant are closed, is had very much for the clearing point and elastic constant that promote liquid-crystal composition
Effect.
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 provided by the present invention have big vertical dielectric, and then have lower parallel dielectric with it is vertical
The ratio of dielectric further has higher transmitance.Therefore, liquid-crystal composition provided by the present invention is suitable for IPS or
FFS type TFT liquid crystal display device, can be obviously improved the transmitance of liquid crystal display, reduce the energy loss of backlight, especially
Suitable for FFS type liquid crystal display.
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)；γ 1 represents rotary viscosity (mPa.s, 25 DEG C)；
Cp represents the clearing point (DEG C) of liquid-crystal composition；K11、K22、K33Respectively represent splay, distortion and bend elastic constant (pN, 25
℃)。
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: 3PGUOCF3。
It indicates are as follows: 3CPWO2.
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.
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
Comparative example 1
Table 22: the weight percent of each component when performance parameter in liquid-crystal composition
Compared with comparative example 1, embodiment 1 and embodiment 2 have bigger vertical dielectric, and then are conducive to promote liquid crystal
Show the transmitance of device.
Transmitance is carried out to embodiment 1, embodiment 2 and comparative example 1 to simulate to obtain following data table 23:
23. embodiment 1 of table, embodiment 2 are compared with 1 transmitance of comparative example
| Embodiment 1 | Embodiment 2 | Comparative example 1 | |
| Transmitance | 0.2986 | 0.3034 | 0.2866 |
Embodiment 1 promotes 4.0% or so relative to the transmitance of comparative example 1, and embodiment 2 is relative to 1 transmitance of comparative example
Promote 6% or so.Liquid-crystal composition obtained by embodiment 3-20 also has higher transmitance, test result and embodiment 1,2 bases
This is consistent.
As seen from the above embodiment, liquid-crystal composition provided by the present invention has big vertical dielectric, and then has more
The ratio of low parallel dielectric and vertical dielectric further has higher transmitance.Therefore, liquid crystal group provided by the present invention
IPS the or FFS type TFT liquid crystal display device that object is suitable for is closed, the transmitance of liquid crystal display can be obviously improved, reduces backlight
The energy loss in source, especially suitable for FFS type liquid crystal display.
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 (10)
1. a kind of liquid-crystal composition, which is characterized in that include compound representated by least one general formula I:
Wherein, R1Independently represent C1~C12Straight chained alkyl, wherein one or more non-conterminous CH2It can be each independently
Replaced O, S or CH=CH；X1It is independently represented each other F, CF3、OCF3；
And including at least compound representated by a kind of general formula II:
Wherein, R2、R3It is independently represented each other C1~C12Straight chained alkyl, unbranched alkoxy or C2~C12Straight-chain alkenyl；A1Respectively
From independently representing trans- 1,4- cyclohexyl or 1,4- phenylene；
And including at least compound representated by a kind of general formula III:
Wherein, R4、R5Independently represent C1~C12Straight chained alkyl, wherein one or more non-conterminous CH2It can be respectively independent
Ground is replaced O, S or CH=CH；A2、A3It is independently represented each other trans- 1,4- cyclohexyl or 1,4- phenylene.
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~
One of IC or a variety of:
Wherein, R1It is independently represented each other C1~C7Straight chained alkyl；
Preferably, compound representated by general formula I is selected from one of IA1~IC5 or a variety of:
It is highly preferred that compound representated by general formula I is selected from one of IA2, IA3, IA5, IC2, IC3 or a variety of；It is especially excellent
Select one or both of IA2, IA3.
3. liquid-crystal composition according to claim 1, which is characterized in that compound representated by general formula II be selected from IIA~
One of IIB or a variety of:
Wherein, R2Represent C1~C7Straight chained alkyl or C2~C7Straight-chain alkenyl；R3Represent C1~C7Straight chained alkyl or straight chain alkane
Oxygroup；
Preferably, compound representated by general formula II is selected from one of IIA1~IIB36 or a variety of:
It is highly preferred that compound representated by general formula II be selected from IIA1, IIA2, IIA14, IIA19, IIA20, IIA21, IIA22,
One of IIA26, IIB19, IIB20, IIB32 or a variety of；In particularly preferred IIA19, IIA20, IIA21, IIB19, IIB20
It is one or more.
4. liquid-crystal composition according to claim 1, which is characterized in that compound representated by general formula III is selected from IIIA
One of~IIIC or a variety of:
Wherein, R4It is independently represented each other C1~C7Straight chained alkyl；R5It is independently represented each other C1~C7Straight chained alkyl, straight chain
Alkoxy or C2~C7Straight-chain alkenyl；
Preferably, compound representated by general formula III is selected from one of formula III A1~IIIC38 or a variety of:
It is highly preferred that compound representated by general formula III be selected from formula III A2, IIIA4, IIIA6, IIIA8, IIIA14,
IIIA22、IIIA26、IIIA27、IIIB14、IIIB18、IIIB22、IIIC2、IIIC4、IIIC6、IIIC22、IIIC26、
One of IIIC29, IIIC30 or a variety of；Particularly preferred IIIA2, IIIA6, IIIA14, IIIB22, IIIC4, IIIC29,
One of IIIC30 or a variety of.
5. liquid-crystal composition according to claim 1, which is characterized in that the liquid-crystal composition also includes one or more
Compound representated by general formula IV:
Wherein, R6、R7It is independently represented each other C1~C12Straight chained alkyl, unbranched alkoxy or C2~C12Straight-chain alkenyl；A4Respectively
From trans- Isosorbide-5-Nitrae-cyclohexyl, Isosorbide-5-Nitrae-phenylene is independently represented, wherein one or more H atoms can be replaced by F on phenyl ring.
6. liquid-crystal composition according to claim 1 or 5, which is characterized in that the liquid-crystal composition also include it is a kind of or
The compound that a variety of general formula V are included:
Wherein, R8It is independently represented each other C1~C12Straight chained alkyl, unbranched alkoxy or C2~C12Straight-chain alkenyl；A5Respectively
Trans- Isosorbide-5-Nitrae-cyclohexyl or Isosorbide-5-Nitrae-phenylene are independently represented, wherein one or more H atoms on phenyl ring can be taken by F atom
Generation.
7. according to claim 1, any liquid-crystal composition in 5 or 6, which is characterized in that the liquid-crystal composition also wraps
Containing compound representated by one or more general formula VI:
Wherein, R9It is independently represented each other C1~C12Straight chained alkyl, unbranched alkoxy or C2~C12Straight-chain alkenyl；L1、L2Respectively
From independently representing F or H；X2It is independently represented each other F or OCF3；A6It is independently represented each other trans- 1,4- cyclohexyl or 1,4-
Phenylene, wherein one or more H atoms on phenyl ring can be replaced by F atom.
8. according to claim 1, any liquid-crystal composition in 5-7, which is characterized in that the liquid-crystal composition also includes
Compound representated by one or more general formula VII:
Wherein, R10、R11It is independently represented each other C1~C12Straight chained alkyl or C2~C12Straight-chain alkenyl；L3Generation each independently
Table H or F；
And/or the liquid-crystal composition also includes compound representated by one or more general formula VIII:
Wherein, R12It is independently represented each other C1~C12Straight chained alkyl or C2~C12Straight-chain alkenyl；R13It is independently represented each other
F、C1~C12Straight chained alkyl or C2~C12Straight-chain alkenyl；
And/or the liquid-crystal composition also includes compound representated by one or more general formula IX:
Wherein, R14It is independently represented each other C1~C12Straight chained alkyl；N=0 or 1；L4It is independently represented each other H or CH3；A7、
A8、A9It is independently represented each other:
9. liquid-crystal composition according to claim 1, which is characterized in that the ingredient comprising following weight percent:
Compound representated by (1) 1~30% general formula I；
Compound representated by (2) 1~40% general formula II；
Compound representated by (3) 20~70% general formula IIIs；
Compound representated by (4) 0~30% general formula IV；
Compound representated by (5) 0~20% general formula V；
Compound representated by (6) 0~20% general formula VI；
Compound representated by (7) 0~20% general formula VII；
Compound representated by (8) 0~20% general formula VIII；
Compound representated by (9) 0~35% general formula IX；
Or, the liquid-crystal composition includes the ingredient of following weight percent:
Compound representated by (1) 2~25% general formula I；
Compound representated by (2) 3~34% general formula II；
Compound representated by (3) 40~65% general formula IIIs；
Compound representated by (4) 0~20% general formula IV；
Compound representated by (5) 0~10% general formula V；
Compound representated by (6) 0~12% general formula VI；
Compound representated by (7) 0~10% general formula VII；
Compound representated by (8) 0~15% general formula VIII；
Compound representated by (9) 0~30% general formula IX；
Or, the liquid-crystal composition includes the ingredient of following weight percent:
Compound representated by (1) 3~21% general formula I；
Compound representated by (2) 5~27% general formula II；
Compound representated by (3) 46~59% general formula IIIs；
Compound representated by (4) 0~14% general formula IV；
Compound representated by (5) 0~5% general formula V；
Compound representated by (6) 0~6% general formula VI；
Compound representated by (7) 0~5% general formula VII；
Compound representated by (8) 0~11% general formula VIII；
Compound representated by (9) 0~24% general formula IX；
Or, the liquid-crystal composition includes the ingredient of following weight percent:
Compound representated by (1) 14~25% general formula I；
Compound representated by (2) 10~30% general formula II；
Compound representated by (3) 45~60% general formula IIIs；
Compound representated by (4) 0~15% general formula IV；
Compound representated by (5) 0~8% general formula V；
Compound representated by (6) 0~9% general formula VI；
Compound representated by (7) 0~7% general formula VII；
Compound representated by (8) 0~15% general formula VIII；
Compound representated by (9) 0~15% general formula IX；
Or, the liquid-crystal composition includes the ingredient of following weight percent:
Compound representated by (1) 14~21% general formula I；
Compound representated by (2) 12~27% general formula II；
Compound representated by (3) 48~56% general formula IIIs；
Compound representated by (4) 0~9% general formula IV；
Compound representated by (5) 0~5% general formula V；
Compound representated by (6) 0~5% general formula VI；
Compound representated by (7) 0~4% general formula VII；
Compound representated by (8) 0~10% general formula VIII；
Compound representated by (9) 0~9% general formula IX；
Or, the liquid-crystal composition includes the ingredient of following weight percent:
Compound representated by (1) 2~16% general formula I；
Compound representated by (2) 3~30% general formula II；
Compound representated by (3) 40~65% general formula IIIs；
Compound representated by (4) 0~18% general formula IV；
Compound representated by (5) 0~8% general formula V；
Compound representated by (6) 0~9% general formula VI；
Compound representated by (7) 0~8% general formula VII；
Compound representated by (8) 0~15% general formula VIII；
Compound representated by (9) 0~30% general formula IX；
Or, the liquid-crystal composition includes the ingredient of following weight percent:
Compound representated by (1) 3~16% general formula I；
Compound representated by (2) 5~27% general formula II；
Compound representated by (3) 46~59% general formula IIIs；
Compound representated by (4) 0~14% general formula IV；
Compound representated by (5) 0~5% general formula V；
Compound representated by (6) 0~6% general formula VI；
Compound representated by (7) 0~5% general formula VII；
Compound representated by (8) 0~11% general formula VIII；
Compound representated by (9) 0~24% general formula IX；
Or, the liquid-crystal composition includes the ingredient of following weight percent:
Compound representated by (1) 2~25% general formula I；
Compound representated by (2) 14~30% general formula II；
Compound representated by (3) 48~63% general formula IIIs；
Compound representated by (4) 0~15% general formula IV；
Compound representated by (5) 0~8% general formula V；
Compound representated by (6) 0~8% general formula VI；
Compound representated by (7) 0~8% general formula VII；
Compound representated by (8) 0~10% general formula VIII；
Compound representated by (9) 0~12% general formula IX；
Or, the liquid-crystal composition includes the ingredient of following weight percent:
Compound representated by (1) 3~21% general formula I；
Compound representated by (2) 14~27% general formula II；
Compound representated by (3) 52~58% general formula IIIs；
Compound representated by (4) 0~9% general formula IV；
Compound representated by (5) 0~5% general formula V；
Compound representated by (6) 0~5% general formula VI；
Compound representated by (7) 0~4% general formula VII；
Compound representated by (8) 0~5% general formula VIII；
Compound representated by (9) 0~7% general formula IX；
Or, the liquid-crystal composition includes the ingredient of following weight percent:
Compound representated by (1) 2~17% general formula I；
Compound representated by (2) 3~20% general formula II；
Compound representated by (3) 40~64% general formula IIIs；
Compound representated by (4) 0~18% general formula IV；
Compound representated by (5) 0~8% general formula V；
Compound representated by (6) 0~9% general formula VI；
Compound representated by (7) 0~10% general formula VII；
Compound representated by (8) 0~15% general formula VIII；
Compound representated by (9) 0~29% general formula IX；
Or, the liquid-crystal composition includes the ingredient of following weight percent:
Compound representated by (1) 3~17% general formula I；
Compound representated by (2) 5~15% general formula II；
Compound representated by (3) 46~59% general formula IIIs；
Compound representated by (4) 0~14% general formula IV；
Compound representated by (5) 0~5% general formula V；
Compound representated by (6) 0~6% general formula VI；
Compound representated by (7) 0~5% general formula VII；
Compound representated by (8) 0~11% general formula VIII；
Compound representated by (9) 0~24% general formula IX；
Or, the liquid-crystal composition includes the ingredient of following weight percent:
Compound representated by (1) 2~20% general formula I；
Compound representated by (2) 3~30% general formula II；
Compound representated by (3) 40~65% general formula IIIs；
Compound representated by (4) 1~18% general formula IV；
Compound representated by (5) 0~8% general formula V；
Compound representated by (6) 0~9% general formula VI；
Compound representated by (7) 0~8% general formula VII；
Compound representated by (8) 0~15% general formula VIII；
Compound representated by (9) 0~29% general formula IX；
Or, the liquid-crystal composition includes the ingredient of following weight percent:
Compound representated by (1) 3~16% general formula I；
Compound representated by (2) 5~25% general formula II；
Compound representated by (3) 46~59% general formula IIIs；
Compound representated by (4) 1~14% general formula IV；
Compound representated by (5) 0~5% general formula V；
Compound representated by (6) 0~6% general formula VI；
Compound representated by (7) 0~5% general formula VII；
Compound representated by (8) 0~11% general formula VIII；
Compound representated by (9) 0~24% general formula IX；
Or, the liquid-crystal composition includes the ingredient of following weight percent:
Compound representated by (1) 13~25% general formula I；
Compound representated by (2) 8~30% general formula II；
Compound representated by (3) 43~60% general formula IIIs；
Compound representated by (4) 0~8% general formula V；
Compound representated by (5) 0~8% general formula VI；
Compound representated by (6) 0~9% general formula VII；
Compound representated by (7) 0~15% general formula VIII；
Compound representated by (8) 0~15% general formula IX；
Or, the liquid-crystal composition includes the ingredient of following weight percent:
Compound representated by (1) 16~21% general formula I；
Compound representated by (2) 12~27% general formula II；
Compound representated by (3) 48~55% general formula IIIs；
Compound representated by (4) 0~5% general formula V；
Compound representated by (5) 0~5% general formula VI；
Compound representated by (6) 0~4% general formula VII；
Compound representated by (7) 0~10% general formula VIII；
Compound representated by (8) 0~9% general formula IX；
Or, the liquid-crystal composition includes the ingredient of following weight percent:
Compound representated by (1) 2~20% general formula I；
Compound representated by (2) 10~32% general formula II；
Compound representated by (3) 45~63% general formula IIIs；
Compound representated by (4) 0~15% general formula IV；
Compound representated by (5) 1~10% general formula V；
Compound representated by (6) 0~8% general formula VII；
Compound representated by (7) 0~10% general formula VIII；
Compound representated by (8) 0~12% general formula IX；
Or, the liquid-crystal composition includes the ingredient of following weight percent:
Compound representated by (1) 3~16% general formula I；
Compound representated by (2) 14~27% general formula II；
Compound representated by (3) 52~58% general formula IIIs；
Compound representated by (4) 0~9% general formula IV；
Compound representated by (5) 3~5% general formula V；
Compound representated by (6) 0~4% general formula VII；
Compound representated by (7) 0~5% general formula VIII；
Compound representated by (8) 0~7% general formula IX；
Or, the liquid-crystal composition includes the ingredient of following weight percent:
Compound representated by (1) 2~25% general formula I；
Compound representated by (2) 3~32% general formula II；
Compound representated by (3) 40~63% general formula IIIs；
Compound representated by (4) 0~19% general formula IV；
Compound representated by (5) 0~10% general formula VI；
Compound representated by (6) 0~8% general formula VII；
Compound representated by (7) 0~15% general formula VIII；
Compound representated by (8) 0~30% general formula IX；
Or, the liquid-crystal composition includes the ingredient of following weight percent:
Compound representated by (1) 4~21% general formula I；
Compound representated by (2) 5~27% general formula II；
Compound representated by (3) 46~59% general formula IIIs；
Compound representated by (4) 0~14% general formula IV；
Compound representated by (5) 0~6% general formula VI；
Compound representated by (6) 0~5% general formula VII；
Compound representated by (7) 0~11% general formula VIII；
Compound representated by (8) 0~24% general formula IX；
Or, the liquid-crystal composition includes the ingredient of following weight percent:
Compound representated by (1) 3~25% general formula I；
Compound representated by (2) 5~32% general formula II；
Compound representated by (3) 48~64% general formula IIIs；
Compound representated by (4) 0~15% general formula IV；
Compound representated by (5) 0~10% general formula V；
Compound representated by (6) 0~10% general formula VI；
Compound representated by (7) 0~8% general formula VII；
Compound representated by (8) 0~15% general formula VIII；
Or, the liquid-crystal composition includes the ingredient of following weight percent:
Compound representated by (1) 5~21% general formula I；
Compound representated by (2) 9~27% general formula II；
Compound representated by (3) 52~59% general formula IIIs；
Compound representated by (4) 0~10% general formula IV；
Compound representated by (5) 0~5% general formula V；
Compound representated by (6) 0~6% general formula VI；
Compound representated by (7) 0~4% general formula VII；
Compound representated by (8) 0~11% general formula VIII；
Or, the liquid-crystal composition includes the ingredient of following weight percent:
Compound representated by (1) 2~22% general formula I；
Compound representated by (2) 3~31% general formula II；
Compound representated by (3) 40~63% general formula IIIs；
Compound representated by (4) 0~19% general formula IV；
Compound representated by (5) 0~10% general formula V；
Compound representated by (6) 0~8% general formula VI；
Compound representated by (7) 0~9% general formula VII；
Compound representated by (8) 0~15% general formula VIII；
Compound representated by (9) 1~30% general formula IX；
Or, the liquid-crystal composition includes the ingredient of following weight percent:
Compound representated by (1) 3~17% general formula I；
Compound representated by (2) 5~27% general formula II；
Compound representated by (3) 46~58% general formula IIIs；
Compound representated by (4) 0~14% general formula IV；
Compound representated by (5) 0~5% general formula V；
Compound representated by (6) 0~4% general formula VI；
Compound representated by (7) 0~5% general formula VII；
Compound representated by (8) 0~10% general formula VIII；
Compound representated by (9) 5~24% general formula IX；
Or, the liquid-crystal composition includes the ingredient of following weight percent:
Compound representated by (1) 10~26% general formula I；
Compound representated by (2) 10~30% general formula II；
Compound representated by (3) 48~60% general formula IIIs；
Compound representated by (4) 0~12% general formula IV；
Compound representated by (5) 1~7% general formula V；
Compound representated by (6) 0~8% general formula VII；
Or, the liquid-crystal composition includes the ingredient of following weight percent:
Compound representated by (1) 14~16% general formula I；
Compound representated by (2) 14~27% general formula II；
Compound representated by (3) 52~56% general formula IIIs；
Compound representated by (4) 0~9% general formula IV；
Compound representated by (5) 3~5% general formula V；
Compound representated by (6) 0~4% general formula VII；
Or, the liquid-crystal composition includes the ingredient of following weight percent:
Compound representated by (1) 16~17% general formula I；
Compound representated by (2) 25~27% general formula II；
Compound representated by (3) 52~54.5% general formula IIIs；
Compound representated by (4) 0~5% general formula V；
Compound representated by (5) 0~5% general formula VI；
Compound representated by (6) 0~4.5% general formula VIII；
Compound representated by (7) 0~5% general formula IX；
Or, the liquid-crystal composition includes the ingredient of following weight percent:
Compound representated by (1) 16~17% general formula I；
Compound representated by (2) 25~27% general formula II；
Compound representated by (3) 52~58% general formula IIIs；
Compound representated by (4) 0~3% general formula IV；
Compound representated by (5) 4~5% general formula V；
Compound representated by (6) 0~2.5% general formula VII；
Or, the liquid-crystal composition includes the ingredient of following weight percent:
Compound representated by (1) 5~17% general formula I；
Compound representated by (2) 5~25% general formula II；
Compound representated by (3) 46~59% general formula IIIs；
Compound representated by (4) 0~14% general formula IV；
Compound representated by (5) 0~5% general formula V；
Compound representated by (6) 0~6% general formula VI；
Compound representated by (7) 0~4% general formula VII；
Compound representated by (8) 0~11% general formula VIII；
Compound representated by (9) 0~24% general formula IX.
10. application of any liquid-crystal composition of claim 1-9 in liquid crystal display device, the liquid crystal display device are excellent
Select IPS or FFS type TFT liquid crystal display device.
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