CN105038815B - Liquid-crystal composition - Google Patents
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- CN105038815B CN105038815B CN201510408303.1A CN201510408303A CN105038815B CN 105038815 B CN105038815 B CN 105038815B CN 201510408303 A CN201510408303 A CN 201510408303A CN 105038815 B CN105038815 B CN 105038815B
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Abstract
The invention discloses a kind of liquid-crystal composition, comprising compound shown in compound shown in one or more formulas I and one or more formulas II, and the liquid-crystal composition includes compound shown in II AWherein each substituent provides its definition.There is low viscosity γ the present invention relates to composition1, moderate dielectric anisotropy Δ ε, moderate optical anisotropy Δ n, it is possible to achieve the quick response of liquid crystal display.
Description
Technical field
The present invention relates to field of liquid crystal display, and in particular to a kind of liquid-crystal composition and the liquid crystal comprising the liquid-crystal composition
Display element or liquid crystal display.
Background technology
At present, what the application of liquid-crystal compounds was expanded is increasingly wider, and it can be applied to polytype display, electricity
In optical device, sensor etc..Species for the liquid-crystal compounds of above-mentioned display field is various, and wherein nematic liquid crystal is using most
To be extensive.Nematic liquid crystal is had been applied in passive TN, STN matrix display and system with tft active matrix.
For thin-film transistor technologies (TFT-LCD) application field, although market is very huge in recent years, technology
It is gradually ripe, but requirement of the people to Display Technique also constantly improving, and is especially realizing quick response, reduction driving electricity
Pressure is with terms of reducing power consumption.Liquid crystal material is as one of important photoelectron material of liquid crystal display, to improving liquid crystal display
The performance of device plays an important role.
As liquid crystal material it is necessary to have good chemically and thermally stability and to electric field and the stabilization of electromagnetic radiation
Property.And as thin-film transistor technologies (TFT-LCD) liquid crystal material, do not need only to have as outside upward stability, should also have
Wider nematic temperature range, suitable birefringence anisotropy, very high resistivity, good uviolresistance
The performances such as energy, high electric charge conservation rate and low-steam pressure.
Show and apply for dynamic menu, eliminate display picture ghost and hangover, it is desirable to which liquid crystal has response speed quickly
Degree, therefore it is required that liquid crystal has relatively low rotary viscosity γ1;In addition, for portable set, in order to reduce equipment energy consumption, wishing
Hope that the driving voltage of liquid crystal is as low as possible;And for the display of the purposes such as TV, for the driving voltage requirement of liquid crystal
It is not so low.
The viscosity of liquid-crystal compounds, especially rotary viscosity γ1The response time after liquid crystal power-up is directly affected, either
Rise time (ton) or fall time (toff), all rotary viscosity γ with liquid crystal1It is proportional, rise time (ton) by
In relevant with liquid crystal cell and driving voltage, it can be adjusted by increasing the method for driving voltage with reduction liquid crystal cell box thickness;And
Fall time (toff), mainly with the elastic constant of liquid crystal with liquid crystal cell box thickness relevant, box thick decline unrelated with driving voltage
(t can be reduced fall timeoff), and under different display modes, the motion mode of liquid crystal molecule is different, tri- kinds of moulds of TN, IPS, VA
Formula respectively with average elastic constants K, distortion elastic constant, bend elastic constant inversely.
According to liquid crystal continuum theory, after a variety of liquid crystal are deformed upon under external force (electric field, magnetic field) effect, meeting
By intermolecular interaction, original shape is returned in meeting " resilience ";Likewise, liquid crystal is also due to intermolecular interaction
Power formation " viscosity ".The minor variations of liquid crystal molecule, can make the conventional parameter performance of liquid crystal occur obvious change, these changes
Have plenty of certain rule, seeming of having is difficult to find rule, can also be produced for the interaction between liquid crystal molecule substantially
Influence, these influences are very delicate, also do not form very perfect theoretical explanation so far.
The viscosity of liquid crystal is relevant with liquid crystal molecule structure, studies the viscosity and liquid of the liquid crystal system of different liquid crystal molecule formation
Relation between brilliant molecular structure is one of vital task of dispensing liquid crystal engineer.
The content of the invention
A kind of liquid crystal display cells it is an object of the invention to provide liquid-crystal composition and comprising the liquid-crystal composition or
Liquid crystal display, the liquid-crystal composition has relatively low viscosity, it is possible to achieve quick response, at the same have moderate dielectric each to
Different in nature Δ ε, moderate optical anisotropy Δ n, the high stability to light and heat.Liquid crystal display comprising the liquid-crystal composition
Element or liquid crystal display have wider nematic temperature range, suitable birefringence anisotropy, very high resistance
The performances such as rate, good anti-ultraviolet property, high electric charge conservation rate and low-steam pressure.
In order to realize above-mentioned advantageous effects, the invention provides a kind of liquid-crystal composition.Liquid provided by the present invention
Crystal composite includes compound shown in compound shown in one or more formulas I and one or more formulas II, and the liquid crystal
Composition includes compound shown in the-A of formula II:
Wherein, R1、R2The alkenyl that alkyl or carbon number that carbon number is 1-9 are 2-9 is represented independently of one another, it is described
One or more CH in the alkenyl that the alkyl or carbon number that carbon number is 1-9 are 2-92It can be replaced by O, and O can not be straight
Connect connected;
Y1Represent H or F;
Y2The carbon number for representing alkyl, the alkoxy that carbon number is 1-5 or fluoro that F, carbon number are 1-5 is 1-
5 alkoxy;
Represent 1,4- phenylenes, 1,4- cyclohexylidenes or 1,4- cyclohexadienylidenes;
Represent 1,4- phenylenes, work as Y2When the carbon number for representing fluoro is 1-5 alkoxy,Represent
1,4- cyclohexylidenes or 1,4- cyclohexadienylidenes;
N represents 0 or 2.
Liquid-crystal composition provided by the present invention must be comprising compound shown at least one formula I, and must include formula
Compound shown in the-A of compound Chinese style shown in II II, can also comprising in compound shown in one or more formulas II except the-A of formula II with
Other outer compounds.
Preferably, liquid-crystal composition provided by the present invention does not include the liquid-crystal compounds containing-CN, and not
Include the liquid-crystal compounds containing pyridine or pyrimidine ring.
The liquid-crystal compounds of the invention for not containing condensed cyclic structure further preferably.
Liquid-crystal composition Δ n [589nm, 25 DEG C] provided by the present invention>0.08, Δ ε [1KHz, 25 DEG C]>2, clearing point
Cp>70.0 DEG C, rotary viscosity γ1[25 DEG C] are between 40~110mPas.
Liquid-crystal composition provided by the present invention, compound preferred mass content is 1-20% wherein shown in formula I;- the A of formula II
Shown compound preferred content is 20-40%, and compound preferred content shown in formula II is 25-55%
The liquid-crystal composition of the present invention does not contain the liquid crystal composition of-CN structures.- CN has very big permanent dipole moment, electricity
Sub- cloud is compared with horn of plenty, it is easy to which Liquidity limit is so as to cause the decline of liquid crystal electric property, such as electric charge conservation rate VHR, resistance
Rate ρ, power consumption etc..
It is linear that condensed cyclic structure liquid crystal molecule has not often possessed, and viscosity is bigger than normal, is unfavorable for improving liquid containing these compositions
Brilliant response speed.
According to the difference of X substituents, compound shown in formula I is particularly preferred as compound shown in the 1- I 10 of formula I:
Wherein, Y21The alkyl that carbon number is 1-5 is represented independently of one another;
Y22The alkoxy that carbon number is 1-5 is represented independently of one another;
(F) F or H is represented independently of one another.
Compound shown in formula I generally has the intersolubility good with other liquid crystal, and single compound addition is preferably in 5-
Between 15%, Y1、Y2The difference of substituent, type I compound dielectric anisotropy Δ ε can be neutral or reach 10 or so
Higher value, Y1For hydrogen, Y2During for alkyl, alkoxy, type I compound dielectric anisotropy Δ ε is shown neutral (close to zero);
There is higher clearing point CP, larger K values, relatively low rotary viscosity γ simultaneously1, it is possible to while adjustable liquid crystal display mixture
CP, K value;Y1、Y2It is simultaneously substituent such as F, OCF of larger polarity3, fluoro-alkyl when, compound shown in formula I can have compared with
Big dielectric anisotropy Δ ε, relatively low rotary viscosity γ1, so can be with the Δ ε of adjustable liquid crystal display mixture.
Isosorbide-5-Nitrae-phenylene is represented, works as Y2When the carbon number for representing fluoro is 1-5 alkoxy,May be used also
To represent 1,4- cyclohexylidenes or 1,4- cyclohexadienylidenes.When representing Isosorbide-5-Nitrae-phenylene, biphenyl structural can be formed, thus
Larger optical anisotropy Δ n can be shown, electron cloud is easier by electric field polarization, shows lower rotary viscosity γ1,
Thus be conducive to the Δ n to big direction adjustable liquid crystal display mixture.
OCF3Substituent often brings higher clearing point CP, 5 or so dielectric anisotropy Δ ε to liquid crystal, with reference to
The structure of bis cyclohexane, can have larger K values, such as I 9, I 10.
Compound shown in one or more formulas II is comprising compound shown in II-A described in formula and preferably comprises II 1-
One or more compounds in compound shown in II 10:
Compound shown in formula II has very low rotary viscosity γ1, close to neutral dielectric anisotropy Δ ε, less
Optical anisotropy Δ n, has advantage improving liquid crystal viscosity, cryogenic property.Rotation of the different alkyl substituents to liquid crystal
Viscosity γ1, clearing point CP all there is influence, general longer alkyl chain or alkenylene chain can increase the rotary viscosity γ of liquid crystal1Together
Shi Tigao clearing point CP, but compound γ shown in the-A of formula II1It is minimum.
Liquid-crystal composition provided by the present invention, can also add compound shown in one or more formulas III
Wherein, R3The alkenyl that alkyl or carbon number that carbon number is 1-9 are 2-9 is represented, the carbon number is 1-9
Alkyl or carbon number for 2-9 alkenyl in one or more CH2It can be replaced by O, and O can not be joined directly together;
Represent 1,4- phenylenes, 1,4- cyclohexylidenes or 1,4- cyclohexadienylidenes.
Liquid-crystal composition provided by the present invention, compound preferred mass content is 5-20% wherein shown in formula III.
The specific preferably following compound of compound shown in the formula III:
Compound light anisotropy Δ n shown in formula III is moderate, and dielectric anisotropy Δ ε is between 5-9, relatively low rotation
Viscosity γ1, clearing point CP is typically more than 120 DEG C, available for regulation mixed liquid crystal CP, Δ n, Δ ε, γ1Etc. parameter.The institute of formula III
Show compound R3It is preferred that C1-C5Straight chained alkyl.
Liquid-crystal composition provided by the present invention, can also add compound shown in one or more formulas IV
Wherein, R4The alkenyl that alkyl or carbon number that carbon number is 1-9 are 2-9 is represented, the carbon number is 1-9
Alkyl or carbon number for 2-9 alkenyl in one or more CH2It can be replaced by O, and O can not be joined directly together;
N represents 0,1;
(F) H or F is represented.
Liquid-crystal composition provided by the present invention, compound preferred mass content is 5-20% wherein shown in formula IV.
Compound shown in formula IV is preferably:
Liquid-crystal composition provided by the present invention, can also add compound shown in one or more formulas V
Wherein, R5、R6The alkenyl that alkyl or carbon number that carbon number is 1-9 are 2-9 is represented independently of one another, it is described
One or more CH in the alkenyl that the alkyl or carbon number that carbon number is 1-9 are 2-92It can be replaced by O, and O can not be straight
Connect connected;
Y3、Y4H or F is represented, but asynchronously represents F;
Represent 1,4- phenylenes, 1,4- cyclohexylidenes or 1,4- cyclohexadienylidenes.
Liquid-crystal composition provided by the present invention, compound preferred mass content is 2-15% wherein shown in formula V.
Compound shown in formula V is preferably:
Compound R shown in formula V6、R5It is preferred that C1-C5Straight chained alkyl.Liquid-crystal composition provided by the present invention, can also add
Enter compound shown in one or more formulas VI
Wherein, R7The alkenyl that alkyl or carbon number that carbon number is 1-9 are 2-9 is represented, the carbon number is 1-9
Alkyl or carbon number for 2-9 alkenyl in one or more CH2It can be replaced by O, and O can not be joined directly together;
Represent 1,4- phenylenes, 1,4- cyclohexylidenes or 1,4- cyclohexadienylidenes;
Represent 1,4- phenylenes, fluoro 1,4- phenylenes, 1,4- cyclohexylidenes or 1,4- cyclohexadienylidenes;
R8The alkenyl that alkyl or carbon number that F, carbon number are 1-9 are 2-9 is represented, shown carbon number is 1-9's
Alkyl or carbon number are one or more CH in 2-9 alkenyl2It can be replaced by O, and O can not be joined directly together.
Liquid-crystal composition provided by the present invention, compound preferred mass content is 5-30% wherein shown in formula VI.
Compound shown in formula VI is preferably:
Compound shown in formula VI -1, VI -2 is the close neutrality of dielectric anisotropy Δ ε, low rotary viscosity γ1, clearing point
Higher, K values are larger, can be used for the K values and γ for allocating liquid crystal1, so as to realize quick response.The compound of Terphenyls VI -5
Due to larger conjugated system, thus with very big optical anisotropy Δ n, be particularly suitable for use in the big refractive index of allotment
Mixed liquid crystal.
Liquid-crystal composition provided by the present invention, can also add compound shown in one or more formulas VII
R9The alkenyl that alkyl or carbon number that carbon number is 1-9 are 2-9 is represented, the carbon number is 1-9 alkane
Base or carbon number are one or more CH in 2-9 alkenyl2It can be replaced by O, and O can not be joined directly together;
Represent 1,4- phenylenes, the 1,4- phenylenes of fluoro, 1,4- cyclohexylidenes, 1,4- cyclohexadienylidenes and/or
One or disjunct two CH in 1,4- cyclohexylidenes2It is substituted with an oxygen one or both of formed group;
P represents 2 or 3.
Liquid-crystal composition provided by the present invention, compound preferred mass content is 5-55% wherein shown in formula VII.
Compound shown in formula VII is preferably:
Compound shown in formula VII has larger dielectric anisotropy Δ ε, low rotary viscosity γ1, can be used for allotment
Liquid crystal compound is to reduce liquid crystal drive voltage, compound R shown in formula VII9It is preferred that C1-C5Straight chained alkyl or C2-C5Straight chain alkene
Base.
Liquid-crystal composition provided by the present invention, comprising or not comprising formula III, formula IV, formula V, formula VI, shown in formula VII
On the basis of compound, the change containing cycloalkyl shown in one or more formulas VIII -1, VIII -2 and/or VIII -3 can also be included
Compound:
Wherein,The sub- ring of 1,4- cyclohexylidenes, 1,4- is represented independently of one another
The disjunct CH of one or both of hexyl2The sub- benzene of the 1,4- of formed group, 1,4- phenylenes and/or fluoro is replaced by O
One or more in base;
R10The alkenyl that alkyl or carbon number that F, carbon number are 1-9 are 2-9 is represented, shown carbon number is 1-9's
Alkyl or carbon number are one or more CH in 2-9 alkenyl2It can be replaced by O, and O can not be joined directly together;
R11The alkenyl that alkyl or carbon number that carbon number is 1-9 are 2-9 is represented, the carbon number is 1-9 alkane
Base or carbon number are one or more CH in 2-9 alkenyl2It can be replaced by O, and O can not be joined directly together;
Z1、Z2、Z3Singly-bound ,-CF are represented independently of one another2O- or-CH2O-;
I, j, k represent 1,2 or 3 independently of one another;
Q represents 0,1 or 2.
Compound shown in formula VIII -1, VIII -2, VIII -3 is to contain compound cycloalkyl, R10、R11It is preferred that C1-C5Straight chained alkyl,
C2-C5Straight-chain alkenyl or C1-C5Unbranched alkoxy.
Compound shown in formula VIII does not contain the end group alkyl chain of softness, thus has between stronger rigidity, liquid crystal molecule
The change of relative effect, shows larger K values, higher CP.
Compound shown in VIII -1 is specifically preferred:
Compound shown in VIII -2 is preferred in addition:
Compound shown in VIII -3 is preferred in addition:
The different proportion of each composition of liquid-crystal composition, can show slightly discrepant performance, such as dielectric anisotropy Δ
Transition temperature point CP, the low temperature stability inferior that ε, optical anisotropy Δ n, the nematic phase of liquid crystal are converted into liquid all can be poor
It is different, can apply to different types of display device, but it is identical the characteristics of be its rotary viscosity γ1It is relatively low.Applied to liquid crystal
Display device, it is possible to achieve quick response.
The dopant of various functions can also be added in liquid-crystal compounds provided by the present invention, dopant content is preferred
Between 0.01-1%, these dopants are mainly antioxidant, ultra-violet absorber, chiral agent.
Antioxidant, ultra-violet absorber are preferred:
S represents 1-10 integer.
Chiral agent is preferably (left-handed or dextrorotation):
The invention further relates to the liquid crystal display cells comprising any one above-mentioned liquid-crystal composition or liquid crystal display;It is described
Display element or display are active matrix display element or display or passive matrix display element or display.
The preferred active array addressing liquid crystal display cells of liquid crystal display cells or liquid crystal display or liquid crystal display.
The active matrix display element or display are specially TN-TFT or IPS-TFT liquid crystal display cells or display
Device.
Liquid-crystal composition provided by the present invention has relatively low viscosity, it is possible to achieve quick response, while having moderate
Dielectric anisotropy Δ ε, moderate optical anisotropy Δ n, the high stability to light and heat.
Include the liquid crystal material of liquid-crystal composition provided by the present invention, not only with good chemically and thermally stability with
And to electric field and the stability of electromagnetic radiation.Moreover, using liquid crystal material as thin-film transistor technologies (TFT-LCD), also have
Wider nematic temperature range, suitable birefringence anisotropy, very high resistivity, good uviolresistance
The performances such as energy, high electric charge conservation rate and low-steam pressure.
Embodiment
With reference to specific embodiment, the present invention is further elaborated, but the present invention is not limited to following examples.Institute
It is conventional method unless otherwise instructed to state method.The raw material can be obtained from open commercial sources unless otherwise instructed.Institute
State percentage unless otherwise instructed, be mass percent.
In following embodiments,
CP represents clearing point, is directly determined using the micro- thermal analyzers of WRX-1S, sets heating rate as 3 DEG C/min;
Δ n represents optical anisotropy (589nm, 20oC);
Δ ε represents dielectric anisotropy (25 DEG C, 1KHz, HP4284A, 5.2 microns of left-handed boxes of TN);
γ1Rotary viscosity (mpas) at 20 DEG C is represented, VHR (%) represents electric charge conservation rate (5V, 60Hz, 20 DEG C), ρ (×
1013 Ω cm) represent resistivity (20 DEG C);
Voltage retention VHR (%) tester and electricalresistivityρ (× 1013Ω cm) be TOYO06254 and
TOYO6517 type liquid crystal evaluation of physical property system (20 DEG C of test temperature, time 16ms, testing cassete is 7.0 microns).
Embodiment 1
Δε[1KHz,20℃]:8.3
Δn[589nm,20℃]:0.98
Cp:90℃
γ1[20℃]:51mPa.s.
Embodiment 2
Δε[1KHz,20℃]:6.1
Δn[589nm,20℃]:0.110
Cp:℃125
γ1[20℃]:105mPa.s.
Embodiment 3
Δε[1KHz,20℃]:8.9
Δn[589nm,20℃]:0.143
Cp:121℃
γ1[20℃]:144mPa.s.
Embodiment 4
Δε[1KHz,20℃]:8.5
Δn[589nm,20℃]:0.117
Cp:93℃
γ1[20℃]:65mPa.s.
Embodiment 5
Δε[1KHz,20℃]:9.3
Δn[589nm,20℃]:0.102
Cp:95℃
γ1[20℃]:64mPa.s.
Embodiment 6
Δε[1KHz,20℃]:7.6
Δn[589nm,20℃]:0.121
Cp:108℃
γ1[20℃]:73mPa.s.
Embodiment 7
Δε[1KHz,20℃]:4.5
Δn[589nm,20℃]:0.106
Cp:102℃
γ1[20℃]:74mPa.s.
As can be seen from the above embodiments:The liquid-crystal composition of the present invention has relatively low rotary viscosity γ1, for liquid crystal
Display, it is possible to achieve quick response.It is particularly suitable for TN, IPS pattern liquid crystal material.
Claims (8)
1. a kind of liquid-crystal composition, it is characterised in that the liquid-crystal composition include compound shown in one or more formulas I and
Compound shown in one or more formulas II, and the liquid-crystal composition includes compound shown in II-A:
Wherein, R1、R2The alkenyl that alkyl or carbon number that carbon number is 1-9 are 2-9 is represented independently of one another, and the carbon is former
One or more CH in the alkenyl that the alkyl or carbon number that subnumber is 1-9 are 2-92It can be replaced by O, and O can not direct phase
Even;
Y1Represent H or F;
Y2The carbon number for representing alkyl, the alkoxy that carbon number is 1-5 or fluoro that the carbon number of fluoro is 1-5 is 1-5
Alkoxy;
Represent 1,4- phenylenes, 1,4- cyclohexylidenes or 1,4- cyclohexadienylidenes;
Represent 1,4- phenylenes, work as Y2When the carbon number for representing fluoro is 1-5 alkoxy,Represent that 1,4- is sub-
Cyclohexyl or 1,4- cyclohexadienylidenes;
N represents 0 or 2;
The liquid-crystal composition is also comprising compound shown in one or more formulas V:
Wherein, R5、R6The alkenyl that alkyl or carbon number that carbon number is 1-9 are 2-9 is represented independently of one another, and the carbon is former
One or more CH in the alkenyl that the alkyl or carbon number that subnumber is 1-9 are 2-92It can be replaced by O, and O can not direct phase
Even;
Y3、Y4H or F is represented, but asynchronously represents F;
Represent 1,4- phenylenes, 1,4- cyclohexylidenes or 1,4- cyclohexadienylidenes;
The liquid-crystal composition is also comprising compound shown in one or more formulas VI:
Wherein, R7The alkenyl that alkyl or carbon number that carbon number is 1-9 are 2-9 is represented, the carbon number is 1-9 alkane
Base or carbon number are one or more CH in 2-9 alkenyl2It can be replaced by O, and O can not be joined directly together;
Represent 1,4- phenylenes, 1,4- cyclohexylidenes or 1,4- cyclohexadienylidenes;
Represent 1,4- phenylenes, fluoro 1,4- phenylenes, 1,4- cyclohexylidenes or 1,4- cyclohexadienylidenes;
R8Represent the alkenyl that alkyl or carbon number that F, carbon number are 1-9 are 2-9, the carbon number for 1-9 alkyl or
Carbon number is one or more CH in 2-9 alkenyl2It can be replaced by O, and O can not be joined directly together.
2. liquid-crystal composition according to claim 1, it is characterised in that compound shown in shown formula I is with following formula I 2, I
4th, compound shown in I 9, I 10, compound shown in one or more formulas II includes one in compound shown in the 1- II 10 of formula II
Plant or multiple compounds:
Wherein, Y22The alkoxy that carbon number is 1-5 is represented independently of one another;
(F) F or H is represented independently of one another.
3. liquid-crystal composition according to claim 1 or 2, it is characterised in that the liquid-crystal composition also comprising a kind of or
Compound shown in a variety of formulas III:
Wherein, R3The alkenyl that alkyl or carbon number that carbon number is 1-9 are 2-9 is represented, the carbon number is 1-9 alkane
Base or carbon number are one or more CH in 2-9 alkenyl2It can be replaced by O, and O can not be joined directly together;
Represent 1,4- phenylenes, 1,4- cyclohexylidenes or 1,4- cyclohexadienylidenes.
4. liquid-crystal composition according to claim 1 or 2, it is characterised in that the liquid-crystal composition also comprising a kind of or
Compound shown in a variety of formulas IV
Wherein, R4The alkenyl that alkyl or carbon number that carbon number is 1-9 are 2-9 is represented, the carbon number is 1-9 alkane
Base or carbon number are one or more CH in 2-9 alkenyl2It can be replaced by O, and O can not be joined directly together;
N represents 0,1;
(F) H or F is represented.
5. liquid-crystal composition according to claim 1 or 2, it is characterised in that the liquid-crystal composition also comprising a kind of or
Compound shown in a variety of formulas VII:
Wherein, R9The alkenyl that alkyl or carbon number that carbon number is 1-9 are 2-9 is represented, the carbon number is 1-9 alkane
Base or carbon number are one or more CH in 2-9 alkenyl2It can be replaced by O, and O can not be joined directly together;
Represent 1,4- phenylenes, the 1,4- phenylenes of fluoro, 1,4- cyclohexylidenes, 1,4- cyclohexadienylidenes and/or 1,4-
One or disjunct two CH in cyclohexylidene2It is substituted with an oxygen formed group;
P represents 2 or 3.
6. liquid-crystal composition according to claim 1 or 2, it is characterised in that the liquid-crystal composition also comprising a kind of or
Compound shown in a variety of formulas VIII -2 of formula VIII -1 and/or formula VIII -3:
Wherein,1,4- cyclohexylidenes, 1,4- cyclohexylidenes are represented independently of one another
One or both of disjunct CH2In the 1,4- phenylenes for being replaced formed group, 1,4- phenylenes and/or fluoro by O
One or more;
R10The alkenyl that alkyl or carbon number that F, carbon number are 1-9 are 2-9 is represented, the carbon number is 1-9 alkyl
Or carbon number is one or more CH in 2-9 alkenyl2It can be replaced by O, and O can not be joined directly together;
R11Represent carbon number be 1-9 alkyl or carbon number be 2-9 alkenyl, the carbon number for 1-9 alkyl or
Carbon number is one or more CH in 2-9 alkenyl2It can be replaced by O, and O can not be joined directly together;
Z1、Z2、Z3Singly-bound ,-CF are represented independently of one another2O- or-CH2O-;
I, j, k represent 1,2 or 3 independently of one another;
Q represents 0,1 or 2.
7. include the liquid crystal display cells or liquid crystal display of any liquid-crystal composition in claim 1-6;The display
Element or display are active matrix display element or display or passive matrix display element or display.
8. liquid crystal display cells according to claim 7 or liquid crystal display, it is characterised in that:The Active Matrix LCD At
Element or display are TN-TFT or IPS-TFT liquid crystal display cells or display.
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CN111748357B (en) * | 2019-03-29 | 2023-09-05 | 石家庄诚志永华显示材料有限公司 | Liquid crystal composition and liquid crystal display element |
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