CN115181577A - Positive dielectric anisotropy liquid crystal composition, liquid crystal display element or liquid crystal display - Google Patents
Positive dielectric anisotropy liquid crystal composition, liquid crystal display element or liquid crystal display Download PDFInfo
- Publication number
- CN115181577A CN115181577A CN202110355207.0A CN202110355207A CN115181577A CN 115181577 A CN115181577 A CN 115181577A CN 202110355207 A CN202110355207 A CN 202110355207A CN 115181577 A CN115181577 A CN 115181577A
- Authority
- CN
- China
- Prior art keywords
- carbon atoms
- liquid crystal
- group
- crystal composition
- formula
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 157
- 239000000203 mixture Substances 0.000 title claims abstract description 138
- 150000001875 compounds Chemical class 0.000 claims abstract description 87
- 239000004988 Nematic liquid crystal Substances 0.000 claims abstract description 4
- 125000004432 carbon atom Chemical group C* 0.000 claims description 107
- 125000000217 alkyl group Chemical group 0.000 claims description 31
- -1 cyclopentylidene, cyclobutylidene Chemical group 0.000 claims description 27
- 125000003302 alkenyloxy group Chemical group 0.000 claims description 22
- 125000003545 alkoxy group Chemical group 0.000 claims description 22
- 125000001995 cyclobutyl group Chemical group [H]C1([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 claims description 18
- 125000004979 cyclopentylene group Chemical group 0.000 claims description 18
- 125000004980 cyclopropylene group Chemical group 0.000 claims description 18
- 125000003342 alkenyl group Chemical group 0.000 claims description 16
- 239000011159 matrix material Substances 0.000 claims description 13
- 239000000126 substance Substances 0.000 claims description 2
- 238000002834 transmittance Methods 0.000 abstract description 16
- 230000003287 optical effect Effects 0.000 abstract description 8
- 230000006750 UV protection Effects 0.000 abstract description 6
- 206010047571 Visual impairment Diseases 0.000 abstract description 6
- 230000007547 defect Effects 0.000 abstract description 5
- 230000000052 comparative effect Effects 0.000 description 41
- 238000012360 testing method Methods 0.000 description 41
- 238000002425 crystallisation Methods 0.000 description 37
- 230000008025 crystallization Effects 0.000 description 37
- 230000000875 corresponding effect Effects 0.000 description 28
- 238000009472 formulation Methods 0.000 description 24
- 230000032683 aging Effects 0.000 description 8
- 210000004027 cell Anatomy 0.000 description 7
- 238000003860 storage Methods 0.000 description 7
- 238000006467 substitution reaction Methods 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 5
- 239000000178 monomer Substances 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 239000002019 doping agent Substances 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 239000003963 antioxidant agent Substances 0.000 description 2
- 230000003078 antioxidant effect Effects 0.000 description 2
- 210000002858 crystal cell Anatomy 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 125000001153 fluoro group Chemical group F* 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 125000004973 1-butenyl group Chemical group C(=CCC)* 0.000 description 1
- 125000004776 1-fluoroethyl group Chemical group [H]C([H])([H])C([H])(F)* 0.000 description 1
- 125000006039 1-hexenyl group Chemical group 0.000 description 1
- 125000006023 1-pentenyl group Chemical group 0.000 description 1
- 125000006017 1-propenyl group Chemical group 0.000 description 1
- UWCWUCKPEYNDNV-LBPRGKRZSA-N 2,6-dimethyl-n-[[(2s)-pyrrolidin-2-yl]methyl]aniline Chemical compound CC1=CC=CC(C)=C1NC[C@H]1NCCC1 UWCWUCKPEYNDNV-LBPRGKRZSA-N 0.000 description 1
- 125000004974 2-butenyl group Chemical group C(C=CC)* 0.000 description 1
- 125000004777 2-fluoroethyl group Chemical group [H]C([H])(F)C([H])([H])* 0.000 description 1
- 125000006040 2-hexenyl group Chemical group 0.000 description 1
- 125000006024 2-pentenyl group Chemical group 0.000 description 1
- 125000004975 3-butenyl group Chemical group C(CC=C)* 0.000 description 1
- 125000006041 3-hexenyl group Chemical group 0.000 description 1
- 101001053401 Arabidopsis thaliana Acid beta-fructofuranosidase 3, vacuolar Proteins 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 125000004976 cyclobutylene group Chemical group 0.000 description 1
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 1
- 125000001559 cyclopropyl group Chemical group [H]C1([H])C([H])([H])C1([H])* 0.000 description 1
- 125000002704 decyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 125000001028 difluoromethyl group Chemical group [H]C(F)(F)* 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 125000004216 fluoromethyl group Chemical group [H]C([H])(F)* 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 125000003187 heptyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- 125000001972 isopentyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 125000000654 isopropylidene group Chemical group C(C)(C)=* 0.000 description 1
- 239000004611 light stabiliser Substances 0.000 description 1
- 125000005647 linker group Chemical group 0.000 description 1
- 238000003760 magnetic stirring Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- PQIOSYKVBBWRRI-UHFFFAOYSA-N methylphosphonyl difluoride Chemical group CP(F)(F)=O PQIOSYKVBBWRRI-UHFFFAOYSA-N 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000001400 nonyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- LMBFAGIMSUYTBN-MPZNNTNKSA-N teixobactin Chemical compound C([C@H](C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](CO)C(=O)N[C@H](CCC(N)=O)C(=O)N[C@H]([C@@H](C)CC)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](CO)C(=O)N[C@H]1C(N[C@@H](C)C(=O)N[C@@H](C[C@@H]2NC(=N)NC2)C(=O)N[C@H](C(=O)O[C@H]1C)[C@@H](C)CC)=O)NC)C1=CC=CC=C1 LMBFAGIMSUYTBN-MPZNNTNKSA-N 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K19/00—Liquid crystal materials
- C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
- C09K19/42—Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40
- C09K19/44—Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40 containing compounds with benzene rings directly linked
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
Abstract
The invention discloses a positive dielectric anisotropy nematic liquid crystal composition, which comprises one or more compounds shown as a formula I and one or more compounds shown as a formula II. The composition has high transmittance, high dielectric anisotropy, high optical anisotropy, high perpendicular dielectric anisotropy, and high epsilon ⊥ The ratio of delta epsilon, a wider nematic phase temperature range, strong ultraviolet resistance and high temperature resistance, no afterimage defect and the like. The invention also discloses a liquid crystal display element and a liquid crystal display comprising the liquid crystal composition.
Description
Technical Field
The invention relates to the technical field of liquid crystal materials. And more particularly to a positive dielectric anisotropic liquid crystal composition, a liquid crystal display element or a liquid crystal display.
Background
With the development of Display technology, flat panel Display devices such as Liquid Crystal Displays (LCDs) have advantages of high image quality, power saving, thin body, and wide application range, and thus are widely used in various consumer electronics products such as mobile phones, televisions, personal digital assistants, digital cameras, notebook computers, and desktop computers, and become the mainstream of Display devices.
With the continuous improvement of digital information technology, consumers have pursued higher display performance of liquid crystal display devices. In the field of notebook computer display, the screen occupation ratio is getting larger, and the screen occupation ratio is changed from 16. With the increase of the display area, the resolution of the display device needs to be increased continuously to meet the requirement of high image quality. The 2K resolution, even 4K resolution, will gradually become the essential display requirement of the mainstream notebook computer product. However, the high resolution causes the aperture ratio of the display panel to decrease, and both the brightness and the contrast ratio will be affected by it, with a significant decrease.
Therefore, it is an urgent technical problem to develop a liquid crystal composition with high transmittance to meet the high resolution requirement of the display panel of the notebook computer.
Disclosure of Invention
Based on the above facts, a first object of the present invention is to provide a transparent polarizer having high transmittance, high dielectric anisotropy, high optical anisotropy, high perpendicular dielectric anisotropy, and high ∈ in combination ⊥ The liquid crystal composition has a wide temperature range of nematic phase, strong ultraviolet and high temperature resistance and no afterimage defect, and when the liquid crystal composition is used in a high-resolution display component, the aperture ratio, the brightness, the contrast ratio and the like of a display panel cannot be reduced.
A second object of the present invention is to provide a liquid crystal display element.
A third object of the present invention is to provide a liquid crystal display.
In order to achieve the first purpose, the invention adopts the following technical scheme:
a positive dielectric anisotropic nematic liquid crystal composition comprising one or more compounds of formula i, and one or more compounds of formula ii:
wherein the content of the first and second substances,
R 1 represents an alkyl group having 1 to 10 carbon atoms; y is 1 Denotes CF 3 Or OCF 3 ；
R 2 、R 3 Each independently represents an alkyl group having 1 to 10 carbon atoms, a fluorine-substituted alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, a fluorine-substituted alkoxy group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, a fluorine-substituted alkenyl group having 2 to 10 carbon atoms, an alkenyloxy group having 3 to 8 carbon atoms or a fluorine-substituted alkenyloxy group having 3 to 8 carbon atoms, and R 2 Any one or more-CH of the groups shown 2 -optionally substituted by cyclopentylene, cyclobutyl or cyclopropylene; z represents-O-or-S-.
Further, the compound represented by the formula I is selected from the group consisting of compounds represented by the formulae I1 to I6,
further, the compound represented by the formula II is selected from the group consisting of compounds represented by the formulae II 1 to II 6,
wherein R is 21 、R 31 Each is independentAnd (b) represents an alkyl group having 1 to 6 carbon atoms.
Further, the liquid crystal composition further comprises one or more compounds shown as a formula III:
wherein R is 4 、R 5 Each independently represents an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms or an alkenyloxy group having 3 to 8 carbon atoms;
Further, the liquid crystal composition also comprises one or more compounds shown as a formula IV:
wherein R is 6 Represents an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms or an alkenyloxy group having 3 to 8 carbon atoms, and R 6 Any one or more-CH of the group 2 -is replaced by optionally cyclopentylidene, cyclobutylidene or cyclopropylidene;
X 1 、X 2 Each independently represents H or F; y is 2 denotes-F, -CF 3 or-OCF 3 (ii) a m represents 1 or 2, and when m represents 2,
may be the same or different.
Further, the liquid crystal composition also comprises one or more compounds shown as a formula V:
wherein R is 7 、R 8 Each independently represents an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, a fluorine-substituted alkenyl group having 2 to 10 carbon atoms, an alkenyloxy group having 3 to 8 carbon atoms or a fluorine-substituted alkenyloxy group having 3 to 8 carbon atoms, and R 7 、R 8 Any one or more-CH's not adjacent to each other 2 -is optionally substituted with cyclopentylene, cyclobutyl or cyclopropylene;
Z 1 represents a single bond or-CH 2 O-；
q represents 1 or 2; n represents 0 or 1;
when q represents a number of 2, the compound is,
may be the same or different.
Further, the compound of formula V is selected from the group consisting of compounds of formulae V1 to V8,
wherein R is 7 、R 8 Each independently represents an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms, and R 7 Any one or more-CH's not adjacent to each other 2 -substituted by optionally cyclopentylene, cyclobutyl or cyclopropylene.
Further, the liquid crystal composition also comprises one or more compounds shown as a formula VI:
wherein R is 9 Represents an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, an alkenyloxy group having 3 to 8 carbon atoms, and R 9 Any one or more of the radicals indicated being unconnected-CH 2 -optionally substituted with cyclopentylene, cyclobutyl or cyclopropylene;
p represents 1 or 2; when p represents a number of 2, the compound is,
may be the same or different; x 3 、X 4 Each independently represents H or F.
Further, the liquid crystal composition further comprises one or more compounds selected from the group consisting of compounds represented by formulas VII 1 to VII 5:
wherein R is 10 Represents an alkyl group having 1 to 10 carbon atoms, and R 10 Any one or more of the radicals indicated being unconnected-CH 2 -optionally substituted with cyclopentylene, cyclobutyl or cyclopropylene; r is 11 Represents an alkoxy group having 1 to 10 carbon atoms.
The invention also provides a liquid crystal display element which comprises the liquid crystal composition, wherein the liquid crystal display element is an active matrix addressing display element or a passive matrix addressing display element.
The invention also provides a liquid crystal display comprising the liquid crystal composition of the invention, wherein the liquid crystal display is an active matrix addressing display or a passive matrix addressing display.
The invention has the following beneficial effects:
the liquid crystal composition provided by the invention has the advantages of high transmittance, high optical anisotropy, high dielectric anisotropy, high vertical dielectric constant, high epsilon/delta epsilon ratio, wide nematic phase temperature range, strong ultraviolet resistance and high temperature resistance, no afterimage defect, and is particularly suitable for liquid crystal display components with high resolution (such as 2K or higher resolution), and the problem that the aperture opening ratio of a display panel is reduced due to the high resolution, and further the brightness and the contrast are obviously reduced is solved.
The liquid crystal display element and the liquid crystal display have high contrast, light and thin panel, low energy consumption, wider use temperature range and good reliability by comprising the liquid crystal composition.
Detailed Description
In order to more clearly illustrate the invention, the invention is further described below in connection with preferred embodiments. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.
[ liquid Crystal composition ]
A positive dielectric anisotropic nematic liquid crystal composition comprising one or more compounds of formula i, and one or more compounds of formula ii:
wherein R is 1 Represents an alkyl group having 1 to 10 carbon atoms; y is 1 Denotes CF 3 Or OCF 3 ；R 2 、R 3 Each independently represents an alkyl group having 1 to 10 carbon atoms, a fluorine-substituted alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, a fluorine-substituted alkoxy group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, a fluorine-substituted alkenyl group having 2 to 10 carbon atoms, an alkenyloxy group having 3 to 8 carbon atoms or a fluorine-substituted alkenyloxy group having 3 to 8 carbon atoms, and R 2 Any one or more-CH of the groups shown 2 -optionally substituted by cyclopentylene, cyclobutyl or cyclopropylene; z represents-O-or-S-.
In some preferred embodiments, the compounds of formula I are selected from the group consisting of compounds of formulae I1 to I6:
preferably, the compound of formula ii is selected from the group consisting of compounds of formulae ii 1 to ii 6:
wherein R is 21 、R 31 Each independently represents an alkyl group having 1 to 6 carbon atoms.
The liquid crystal composition of the present invention preferably further comprises one or more compounds represented by formula iii:
wherein R is 4 、R 5 Each independently represents an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms or an alkenyloxy group having 3 to 8 carbon atoms;
The compound shown in the formula III has the characteristics of low rotational viscosity and good intersolubility with other compounds. Is favorable for improving the response speed of the liquid crystal composition.
Preferably, the aforementioned compound represented by formula iii is selected from the group consisting of compounds represented by formulae iii 1 to iii 13:
the liquid crystal composition of the invention preferably further comprises one or more compounds shown as formula IV:
wherein R is 6 Represents an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms or an alkenyloxy group having 3 to 8 carbon atoms, and R 6 Any one or more-CH of the group 2 -is optionally substituted with cyclopentylene, cyclobutyl or cyclopropylene;
X 1 、X 2 Each independently represents H or F; y is 2 represents-F, -CF 3 or-OCF 3 (ii) a m represents 1 or 2, and when m represents 2,
may be the same or different.
The compound shown in the formula IV has positive dielectric anisotropy, can reduce the threshold voltage of the liquid crystal composition, and is favorable for reducing the power consumption.
Preferably, the compound of the aforementioned formula iv is selected from the group consisting of compounds of formulae iv 1 to iv 12:
wherein R is 6 Represents an alkyl group having 1 to 10 carbon atoms and R 6 Any one or more-CH of the group 2 -is replaced by optionally cyclopentylidene, cyclobutylidene or cyclopropylidene.
Further preferably, the compound represented by the aforementioned formula IV is selected from the group consisting of compounds represented by formulas IV 7-1 to IV 12-2:
the compounds shown in the formulas IV 7-1 to IV 12-2 not only have higher positive dielectric anisotropy, but also have higher optical anisotropy and clearing points, and are beneficial to improving the high temperature resistance of the liquid crystal composition.
The liquid crystal composition according to the present invention preferably further comprises one or more compounds represented by formula v:
wherein R is 7 、R 8 Each independently represents an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, a fluorine-substituted alkenyl group having 2 to 10 carbon atoms, an alkenyloxy group having 3 to 8 carbon atoms or a fluorine-substituted alkenyloxy group having 3 to 8 carbon atoms, and R 7 、R 8 Any one or more-CH's not adjacent to each other 2 -is optionally substituted with cyclopentylene, cyclobutyl or cyclopropylene;
Z 1 represents a single bond or-CH 2 O-；
q represents 1 or 2; n represents 0 or 1;
when q represents a number of 2, the compound is,
may be the same or different.
Preferably, the compound of formula V is selected from the group consisting of compounds of formulae V1 to V8:
wherein R is 7 、R 8 Each independently represents an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms, and R 7 Any one or more-CH's not adjacent to each other 2 -substituted by optionally cyclopentylene, cyclobutyl or cyclopropylene.
The compound shown in the formula V has higher vertical dielectric constant, and is beneficial to improving the ratio of epsilon/delta epsilon of the liquid crystal composition.
Further preferably, the compound of formula V is selected from the group consisting of compounds of formulae V2-1 to V6-3:
the compounds of the formulae V2-1 to V6-3 have not only higher vertical dielectric constants but also higher optical anisotropy.
The liquid crystal composition of the present invention preferably further comprises one or more compounds represented by formula vi:
wherein R is 9 Represents an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, an alkenyloxy group having 3 to 8 carbon atoms, and R 9 Any one or more of the radicals indicated being unconnected-CH 2 -optionally substituted with cyclopentylene, cyclobutyl or cyclopropylene;
p represents 1 or 2; when p represents a number of 2, the compound is,
may be the same or different; x 3 、X 4 Each independently represents H or F; .
Preferably, the compound of formula vi is selected from the group consisting of compounds of formulae vi 1 to vi 5:
wherein R is 9 Represents an alkyl group having 1 to 10 carbon atoms, and R 9 Any one or more of the radicals indicated being unconnected-CH 2 -optionally substituted with cyclopentylene, cyclobutyl or cyclopropylene.
The compounds shown in the formulas VI, and more preferably the compounds shown in the formulas VI 3 to VI 5 have higher anti-pollution capacity, and are beneficial to reducing the production cost.
The liquid crystal composition of the present invention preferably further comprises one or more compounds selected from the group consisting of compounds represented by formulas VII 1 to VII 5:
wherein R is 10 Represents an alkyl group having 1 to 10 carbon atoms, and R 10 Any one or more of the radicals indicated being unconnected-CH 2 -optionally substituted with cyclopentylene, cyclobutyl or cyclopropylene; r 11 Represents an alkoxy group having 1 to 10 carbon atoms.
The compounds represented by the formulas VII 1 to VII 5 can improve the vertical dielectric constant without changing the dielectric anisotropy of the liquid crystal composition.
Examples of the alkyl group having 1 to 10 carbon atoms include methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl, n-pentyl, isopentyl, hexyl, heptyl, octyl, nonyl, and decyl.
Examples of the alkoxy group having 1 to 10 carbon atoms include methoxy, ethoxy, n-propoxy, isopropoxy, n-butoxy, isobutoxy, pentyloxy, hexyloxy, heptyloxy, octyloxy, nonyloxy, decyloxy and the like.
Examples of the alkenyl group having 2 to 10 carbon atoms include vinyl, 1-propenyl, 1-butenyl, 2-butenyl, 3-butenyl, 1-pentenyl, 2-pentenyl, 3-pentenyl, 4-pentenyl, 1-hexenyl, 2-hexenyl, 3-hexenyl and the like.
The "fluoro substitution" in the above-mentioned fluoro-substituted alkyl group having 1 to 10 carbon atoms, fluoro-substituted alkoxy group having 1 to 10 carbon atoms, fluoro-substituted alkenyl group having 2 to 10 carbon atoms, and fluoro-substituted alkenyloxy group having 3 to 8 carbon atoms may be a monofluoro substitution, or a polyfluoro substitution such as a difluoro substitution or a trifluoro substitution, or may be a perfluoro substitution, and the number of fluoro substitutions is not particularly limited. Examples of the fluorine-substituted alkyl group having 1 to 10 carbon atoms include, but are not limited to, fluoromethyl, difluoromethyl, trifluoromethyl, 1-fluoroethyl, 2-fluoroethyl, 1, 2-difluoroethyl, 1, 2-trifluoroethyl, and 1, 2-pentafluoro-substituted ethyl.
One or more nonadjacent-CH in the alkyl with 1-10 carbon atoms 2 Examples of the group substituted with a cyclopropylene group, a cyclobutylene group or a cyclopentylene group include a cyclopropyl group, a cyclobutyl group, a cyclopentyl group, a methylcyclopropylidene group, an ethylcyclopropylene group, a propylcyclopropylidene group, an isopropylcyclopropylidene group, an n-butylcyclopropylidene group, an isobutylcyclopropylidene group, a tert-butylcyclopropylidene group, a methylcyclobutylene group, an ethylcyclobutylidene group, a propylcyclobutylidene group, an isopropylidene group, an n-butylidene group, an isobutylcyclobutylidene group, a tert-butylidene group, a methylcyclopentylene group, an ethylcyclopentylidene group, a propylcyclopentylidene group, an isopropylcyclopentylidene group, an n-butylcyclopentylidene group and an isobutylcyclopentylidene group.
The liquid crystal composition has dielectric anisotropy delta epsilon of 10.0-10.5, optical anisotropy delta n of 0.124-0.129, preferably 0.126-0.128 and clearing point Cp of 80-90 ℃, preferably 80-85 ℃.
In the liquid crystal composition provided by the invention, the total mass percentage content of other compounds except the additive is recorded as 100%.
Preferably, the liquid crystal composition comprises the following components in percentage by mass:
preferably, the compound represented by the formula I accounts for 7-16% by mass, and more preferably, the compound represented by the formula I accounts for 10-15% by mass.
Preferably, the compound represented by the formula II is contained in an amount of 5 to 10% by mass.
Preferably, the sum of the mass percent contents of the compounds shown in the formula I and the formula II is less than 25 percent.
Preferably, the mass percent content of the compound shown as the formula III is 40-42%.
Preferably, the mass percent content of the compound shown in the formula IV is 5-16%.
The compound shown in the formula V preferably accounts for 4-7% of the total mass of the composition.
Preferably, the mass percent content of the compound shown in the formula VI is 25-34%, and more preferably, the mass percent content of the compound shown in the formula VI is 31-34%.
Preferably, the compound shown in the formula VII is 0-4% by mass.
The liquid crystal compound of the present invention may further contain a dopant having various functions, and the content of the dopant is preferably 0.01 to 1%, and examples of the dopant include an antioxidant, an ultraviolet absorber, and a chiral agent.
As the antioxidant, there may be mentioned,
t represents an integer of 1 to 10.
Examples of the light stabilizer include,
chiral agents (levorotatory or dextrorotatory) may be preferably cited, for example:
[ liquid Crystal display element or liquid Crystal display ]
In order to achieve the second object, the invention provides the following technical scheme:
a liquid crystal display element comprising the liquid crystal composition as described above, the liquid crystal display element being an active matrix display element or a passive matrix display element.
In order to achieve the third object, the present invention provides the following technical solutions:
a liquid crystal display comprising a liquid crystal composition as described in the first object above, said liquid crystal display being an active matrix display or a passive matrix display.
Specific examples of the active matrix display element or the display include TN-TFT, IPS-TFT, FFS-TFT liquid crystal display elements, and other TFT displays.
The liquid crystal display element and the liquid crystal display have high contrast, light and thin panel, low energy consumption, wider use temperature range and good reliability by comprising the liquid crystal composition.
Examples
In order to more clearly illustrate the present invention, the present invention is further illustrated below with reference to examples. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.
In this specification, unless otherwise specified, the percentages refer to mass percentages, temperatures are in degrees centigrade (° c), and the specific meanings and test conditions of other symbols are as follows:
cp represents a liquid crystal clearing point (DEG C), and is measured by a DSC quantitative method;
Δ n represents optical anisotropy, n o Refractive index of ordinary light, n e The refractive index of the extraordinary ray is measured under the conditions of 25 +/-2 ℃ and 589nm by an Abbe refractometer;
Δ ε represents the dielectric anisotropy, Δ ε = ε ∥ -ε ⊥ Wherein epsilon ∥ Is the dielectric constant, ε, parallel to the molecular axis ⊥ Dielectric constant perpendicular to molecular axis, test conditions of 25 + -0.5 deg.C, 20 μm vertical cell, INSTEC: ALCT-IR1 test;
γ 1 representing the rotational viscosity (mPas) under the test conditions of 25 + -0.5 deg.C, 20 μm vertical cell, INSTEC: ALCT-IR1 test;
K 11 is the splay elastic constant, K 33 For the flexural elastic constant, the test conditions were: at 25 ℃, INSTEC is ALCT-IR1 and a 20 micron vertical box;
tr (%) represents transmittance, tr (%) =100% bright state (Vop) brightness/light source brightness, test equipment DMS501, the test conditions are 25 ± 0.5 ℃, the test cell is an FFS test cell, the electrode spacing is 5 micrometers, the electrode width is 3 micrometers, and the included angle between the rubbing direction and the electrode is 7 °;
VHR represents the voltage holding ratio (%), the test conditions are 60 + -2 deg.C, voltage + -5V, pulse width 10ms, and voltage holding time 166.7ms. The testing equipment is a TOYO Model6254 liquid crystal performance comprehensive tester;
afterimage: the residual image of the liquid crystal display device was evaluated by visually observing the residual level of the fixed pattern in the case of performing uniform display in the full screen, on a 4-scale basis as follows, after displaying the fixed pattern for 1000 hours in the display region:
very good performance without residue
O has a very small amount of residue and is at an acceptable level
The delta is remained at an unallowable level
X remained quite poor.
The preparation method of the liquid crystal composition comprises the following steps: weighing each liquid crystal monomer according to a certain proportion, putting the liquid crystal monomers into a stainless steel beaker, putting the stainless steel beaker filled with each liquid crystal monomer on a magnetic stirring instrument for heating and melting, adding a magnetic rotor into the stainless steel beaker after most of the liquid crystal monomers in the stainless steel beaker are melted, uniformly stirring the mixture, and cooling to room temperature to obtain the liquid crystal composition.
The liquid crystal monomer structure of the embodiment of the invention is represented by codes, and the code representation methods of the liquid crystal ring structure, the end group and the connecting group are shown in the following tables 1 and 2.
Corresponding code of the ring structure of Table 1
TABLE 2 corresponding codes for end groups and linking groups
Examples are:
Example 1
The formulation and corresponding properties of the liquid crystal compositions are shown in table 3 below.
TABLE 3 formulation and corresponding Properties of the liquid crystal composition of example 1
Example 2
The formulation and corresponding properties of the liquid crystal compositions are shown in table 4 below.
TABLE 4 formulation and corresponding Properties of the liquid crystal composition of example 2
Example 3
The formulation and corresponding properties of the liquid crystal compositions are shown in table 5 below.
TABLE 5 formulation and corresponding Properties of the liquid crystal composition of example 3
Example 4
The formulation and corresponding properties of the liquid crystal compositions are shown in table 6 below.
TABLE 6 formulation and corresponding Properties of the liquid crystal composition of example 4
Example 5
The formulation of the liquid crystal composition and the corresponding properties are shown in table 7 below.
TABLE 7 formulation and corresponding Properties of the liquid crystal composition of example 5
Example 6
The formulation and corresponding properties of the liquid crystal compositions are shown in Table 8 below.
TABLE 8 formulation and corresponding Properties of the liquid crystal composition of example 6
Example 7
The formulation and corresponding properties of the liquid crystal compositions are shown in table 9 below.
TABLE 9 formulation and corresponding Properties of the liquid crystal composition of example 7
Example 8
The formulation of the liquid crystal composition and the corresponding properties are shown in table 10 below.
TABLE 10 formulation and corresponding Properties of the liquid crystal composition of example 8
Comparative example 1
The formulation and corresponding properties of the liquid crystal compositions are shown in Table 11 below.
TABLE 11 formulation and corresponding Properties of comparative example 1 liquid Crystal composition
In contrast to example 6, the liquid crystal composition of comparative example 1 does not contain the compound of formula I. CPWP-3-2 and CPWP-3-O2 with similar structures are used to replace the compound shown in the formula I in equal amount. Although the structures are similar, the performances are greatly different, the dielectric anisotropy of the liquid crystal composition in the comparative example 1 is obviously reduced compared with that in the example 6, and a larger driving voltage is needed to drive the liquid crystal molecules completely, so that more electric energy is consumed. Compared with example 6, if the transmittance is reduced due to the incomplete driving of the liquid crystal composition of comparative example 1 under the same driving voltage, the reduction of the transmittance requires an increase in backlight brightness to obtain a desired screen brightness, thereby consuming more electric power. The increase in rotational viscosity also slows down the response speed of the liquid crystal composition of comparative example 1.
Comparative example 2
The formulation of the liquid crystal composition and the corresponding properties are shown in table 12 below.
TABLE 12 formulation and corresponding Properties of the comparative example 2 liquid Crystal composition
In contrast to example 6, the liquid crystal composition of comparative example 2 did not contain the compound represented by formula II, and the compound PY-2O-O4 was used in place of the compound represented by formula II. Composition Delta epsilon increases ⊥ Instead, it is decreased, and thus ε ⊥ A decrease in/. DELTA.epsilon.will result in a decrease in the transmittance of the liquid crystal composition of comparative example 2.
Comparative example 3
The formulation and corresponding properties of the liquid crystal compositions are shown in Table 13 below.
TABLE 13 formulation and corresponding Properties of comparative example 3 liquid Crystal composition
Compared with example 6, the liquid crystal composition of comparative example 3 does not contain the compounds shown in the formulas I and II. Comparative example 4 the liquid crystal composition has a significantly decreased dielectric anisotropy compared to example 6, and requires a greater driving voltage to fully drive the liquid crystal molecules, thereby consuming more electric power. Compared to example 6, if the liquid crystal composition of comparative example 1 is not completely driven at the same driving voltage, the transmittance is reduced, and the reduction of the transmittance requires an increase in backlight brightness to obtain a desired screen brightness, thereby consuming more electric power.
Comparative example 4
The formulation of the liquid crystal composition and the corresponding properties are shown in table 14 below.
TABLE 14 formulation and corresponding Properties of comparative example 4 liquid Crystal compositions
Compared with the liquid crystal composition of the example 1, the liquid crystal composition of the comparative example 4 has the sum of the mass percent of the compounds shown in the formulas I and II being 26 percent. Although the parameters of the comparative examples are the same as or similar to those of the examples, crystallization occurred during low temperature storage, and the specific low temperature storage condition is shown in Table 15.
Table 15 below shows experimental data on low-temperature storage of liquid crystal compositions of examples and comparative examples.
The low temperature storage experiments were performed using 5ml glass bottles and 4 μm liquid crystal test cells, respectively. 1ml of each of the liquid crystal compositions of examples and comparative examples was put in a 5ml glass bottle as a first set of low-temperature storage experiments. The liquid crystal compositions of examples and comparative examples were put into a liquid crystal cell and used as a second set of low-temperature storage tests. The glass bottle filled with the liquid crystal composition was placed in a glove box at-20 ℃ and the liquid crystal test cell filled with the liquid crystal composition was placed in glove boxes at-20 ℃ and-30 ℃ respectively.
TABLE 15 Experimental data for Low temperature storage of examples and comparative examples
| Glass bottle at-20 DEG C | -20 ℃ test box | -30 ℃ test box | |
| Example 1 | No crystallization in 480 hours | No crystallization in 720 hours | 720 hours without crystallization |
| Example 2 | No crystallization in 480 hours | No crystallization in 720 hours | No crystallization in 720 hours |
| Example 3 | No crystallization in 480 hours | No crystallization in 720 hours | No crystallization in 720 hours |
| Example 4 | No crystallization in 480 hours | No crystallization in 720 hours | 720 hours without crystallization |
| Example 5 | No crystallization in 480 hours | No crystallization in 720 hours | 720 hours without crystallization |
| Example 6 | No crystallization in 480 hours | No crystallization in 720 hours | No crystallization in 720 hours |
| Example 7 | No crystallization in 480 hours | No crystallization in 720 hours | No crystallization in 720 hours |
| Example 8 | No crystallization in 480 hours | 720 hours without crystallization | No crystallization in 720 hours |
| Comparative example 1 | No crystallization in 480 hours | No crystallization in 720 hours | Crystallization occurred in 48 hours |
| Comparative example 2 | Crystallization occurred within 120 hours | Crystallization occurred in 240 hours | Crystallization occurred within 120 hours |
| Comparative example 3 | Crystallization occurred within 120 hours | Crystallization occurred in 240 hours | Crystallization occurred within 120 hours |
| Comparative example 4 | Crystallization occurred in 24 hours | Crystallization occurred in 48 hours | Crystallization occurred in 24 hours |
As can be seen from Table 15 above, the liquid crystal compositions of the examples of the present invention have a wider nematic phase temperature range.
Table 16 below shows the reliability data of the liquid crystal compositions of examples and comparative examples.
The reliability of the liquid crystal composition in the production process of a liquid crystal display element or a liquid crystal display is carried out by carrying out an ultraviolet aging test and a VHR test, and the smaller the change of VHR data before and after the ultraviolet test of the liquid crystal composition is, the stronger the ultraviolet resistance is. Therefore, the ultraviolet resistance was judged by comparing the change in VHR data before and after the test for each of the examples and comparative examples.
The reliability of the liquid crystal composition during operation can be carried out by a backlight aging test and a VHR test. Under long-time backlight irradiation, the liquid crystal composition is damaged by the external environment in a working environment of visible light, ultraviolet rays and 60-70 ℃ for a long time. The smaller the change of VHR data before and after the backlight test of the liquid crystal composition is, the stronger the external environment damage resistance is. Therefore, the resistance to external environmental destruction was judged by comparing the changes in VHR data before and after the test for each of the examples and comparative examples.
First, before the ultraviolet and backlight aging test, VHR data of the liquid crystal composition was measured as initial VHR data, and then, the ultraviolet and backlight aging test was performed on the liquid crystal composition, and after the test, VHR data of the liquid crystal composition was measured again.
Ultraviolet aging test: the liquid crystal composition was poured into a corresponding test cell and irradiated with 5000mJ energy under an ultraviolet lamp having a wavelength of 365 nm.
Backlight test: and filling the liquid crystal composition into a corresponding test box, sealing, placing the test box on a backlight with light intensity of 25000nit to perform a backlight aging test, and performing a VHR test after aging for 1000H.
The smaller the change of the VHR data after the aging test with respect to the initial VHR data, the stronger the resistance of the liquid crystal composition to external environment destruction, and thus, the higher the reliability of the liquid crystal composition.
The liquid crystal compositions of examples 1 to 8 and comparative examples 1 to 4 were poured into a liquid crystal cell and an image sticking test was performed, and the results of the tests are shown in table 16 below.
TABLE 16 data of reliability test of liquid crystal compositions of examples 1 to 8 and comparative examples 1 to 4
As can be seen from Table 16, the liquid crystal composition of the embodiment of the invention has less VHR (very high-frequency response) reduction after ultraviolet and backlight, higher ultraviolet resistance and high temperature resistance, and obvious improvement on afterimage defects.
Table 17 below shows the transmittance test data of the liquid crystal compositions of examples and comparative examples.
TABLE 17 data of transmittance test for liquid crystal compositions of example 6 and comparative examples 1 to 3
| Δε | ε ⊥ | ε ⊥ /Δε | Tr(％) | Δn | d(μm) | |
| Example 6 | 10.1 | 5.4 | 0.535 | 42.85 | 0.126 | 2.7 |
| Comparative example 1 | 9.3 | 5.3 | 0.570 | 33.64 | 0.131 | 2.6 |
| Comparative example 2 | 10.4 | 5.0 | 0.480 | 36.76 | 0.126 | 2.7 |
| Comparative example 3 | 9.5 | 5.0 | 0.526 | 31.34 | 0.130 | 2.6 |
The liquid crystal compositions of examples and comparative examples were tested in a design driven at 3.5V with a retardation of 340 nm. Since comparative examples 1 and 3 have a small dielectric anisotropy, a larger voltage is required to be fully driven, and more electric energy is consumed. When the same driving voltage as in example 6 and comparative example 2 was used, comparative examples 1 and 3 could not be driven completely, and the transmittance was low. Example 6 vertical dielectric constant,. Epsilon.. Mu. ⊥ The ratio of/delta epsilon is larger, and the transmittance is higher. The improvement of the transmittance is beneficial to the full utilization of the backlight, thereby reducing the backlight brightness and reducing the energy consumption.
In conclusion, the liquid crystal composition has the advantages of high transmittance, high optical anisotropy, high dielectric anisotropy, high vertical dielectric constant, high epsilon/delta epsilon ratio, wide nematic phase temperature range, strong ultraviolet resistance and high temperature resistance and no afterimage defect. The liquid crystal display element and the liquid crystal display have high contrast, light and thin panel, low energy consumption, wider use temperature range and good reliability by comprising the liquid crystal composition.
It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it will be obvious to those skilled in the art that other variations or modifications may be made on the basis of the above description, and all embodiments may not be exhaustive, and all obvious variations or modifications may be included within the scope of the present invention.
Claims (10)
1. A positive dielectric anisotropic nematic liquid crystal composition, characterized in that it comprises one or more compounds of formula i and one or more compounds of formula ii:
wherein the content of the first and second substances,
R 1 represents an alkyl group having 1 to 10 carbon atoms; y is 1 Denotes CF 3 Or OCF 3 ；
R 2 、R 3 Each independently represents an alkyl group having 1 to 10 carbon atoms, a fluorine-substituted alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, a fluorine-substituted alkoxy group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, a fluorine-substituted alkenyl group having 2 to 10 carbon atoms, an alkenyloxy group having 3 to 8 carbon atoms or a fluorine-substituted alkenyloxy group having 3 to 8 carbon atoms, and R 2 Any of the groups shownMeaning one or more-CH 2 -optionally substituted by cyclopentylene, cyclobutyl or cyclopropylene; z represents-O-or-S-.
2. The liquid crystal composition of claim 1, wherein the compound of formula I is selected from the group consisting of compounds of formulae I1 to I6,
the compound represented by the formula II is selected from the group consisting of compounds represented by the formulae II 1 to II 6,
wherein R is 21 、R 31 Each independently represents an alkyl group having 1 to 6 carbon atoms.
3. The liquid crystal composition of claim 1, further comprising one or more compounds of formula iii:
wherein R is 4 、R 5 Each independently represents an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms or an alkenyloxy group having 3 to 8 carbon atoms;
4. The liquid crystal composition of claim 1, further comprising one or more compounds of formula iv:
wherein R is 6 Represents an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms or an alkenyloxy group having 3 to 8 carbon atoms, and R 6 Any one or more-CH of the group 2 -is replaced by optionally cyclopentylidene, cyclobutylidene or cyclopropylidene;
X 1 、X 2 Each independently represents H or F; y is 2 denotes-F, -CF 3 or-OCF 3 (ii) a m represents 1 or 2, and when m represents 2,
may be the same or different.
5. The liquid crystal composition of claim 1, further comprising one or more compounds of formula v:
wherein R is 7 、R 8 Each independently represents an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, a fluorine-substituted alkenyl group having 2 to 10 carbon atoms, an alkenyloxy group having 3 to 8 carbon atoms or a fluorine-substituted alkenyloxy group having 3 to 8 carbon atoms, and R 7 、R 8 Any one or more-CH's not adjacent to each other 2 -is optionally substituted with cyclopentylene, cyclobutyl or cyclopropylene;
Z 1 represents a single bond or-CH 2 O-；
q represents 1 or 2; n represents 0 or 1;
when q represents a number of 2, the compound is,
may be the same or different.
6. The liquid crystal composition of claim 5, wherein the compound of formula V is selected from the group consisting of compounds of formulae V1 to V8,
wherein R is 7 、R 8 Each independently represents an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms, and R 7 Any one or more-CH's not adjacent to each other 2 -substituted by optionally cyclopentylene, cyclobutyl or cyclopropylene.
7. The liquid crystal composition of claim 1, further comprising one or more compounds of formula vi:
wherein R is 9 Represents an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, an alkenyloxy group having 3 to 8 carbon atoms, and R 9 Any one or more of the radicals indicated being unconnected-CH 2 -optionally substituted with cyclopentylene, cyclobutyl or cyclopropylene;
p represents 1 or 2; when p represents a number of 2, the compound is,
may be the same or different; x 3 、X 4 Each independently represents H or F.
8. The liquid crystal composition of claim 7, further comprising one or more compounds selected from the group consisting of compounds represented by formulas VII 1 to VII 5:
wherein R is 10 Represents an alkyl group having 1 to 10 carbon atoms, and R 10 Any one or more of the radicals indicated being unconnected-CH 2 -optionally substituted with cyclopentylene, cyclobutyl or cyclopropylene; r 11 Represents an alkoxy group having 1 to 10 carbon atoms.
9. A liquid crystal display element comprising the liquid crystal composition according to any one of claims 1 to 8, wherein the display element is an active matrix display element or a passive matrix display element.
10. A liquid crystal display comprising the liquid crystal composition of any one of claims 1 to 8, which is an active matrix display or a passive matrix display.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110355207.0A CN115181577A (en) | 2021-04-01 | 2021-04-01 | Positive dielectric anisotropy liquid crystal composition, liquid crystal display element or liquid crystal display |
| TW110115363A TWI796679B (en) | 2021-04-01 | 2021-04-28 | Positive dielectric anisotropy liquid crystal composition, liquid crystal display element or liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110355207.0A CN115181577A (en) | 2021-04-01 | 2021-04-01 | Positive dielectric anisotropy liquid crystal composition, liquid crystal display element or liquid crystal display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115181577A true CN115181577A (en) | 2022-10-14 |
Family
ID=83511887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110355207.0A Pending CN115181577A (en) | 2021-04-01 | 2021-04-01 | Positive dielectric anisotropy liquid crystal composition, liquid crystal display element or liquid crystal display |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN115181577A (en) |
| TW (1) | TWI796679B (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4901134B2 (en) * | 2005-06-03 | 2012-03-21 | エルジー ディスプレイ カンパニー リミテッド | Liquid crystal display device and manufacturing method thereof |
| CN110760313A (en) * | 2018-07-26 | 2020-02-07 | 石家庄诚志永华显示材料有限公司 | Liquid crystal compound, liquid crystal composition, liquid crystal display element and liquid crystal display |
| CN112080289A (en) * | 2019-06-14 | 2020-12-15 | 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 |
-
2021
- 2021-04-01 CN CN202110355207.0A patent/CN115181577A/en active Pending
- 2021-04-28 TW TW110115363A patent/TWI796679B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| TW202239946A (en) | 2022-10-16 |
| TWI796679B (en) | 2023-03-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109880637B (en) | Liquid crystal composition, liquid crystal display element and liquid crystal display | |
| CN103254911B (en) | Positive dielectric anisotropy liquid crystal combination with rapid response | |
| KR101790751B1 (en) | Polymer stable alignment type liquid crystal composition and use thereof | |
| CN109837097B (en) | Liquid crystal composition, liquid crystal display element and liquid crystal display | |
| CN104428396A (en) | Nematic liquid crystal composition and liquid crystal display device using same | |
| CN109880638B (en) | Liquid crystal composition, liquid crystal display element and liquid crystal display | |
| CN103897708B (en) | A kind of positive dielectric anisotropy liquid crystal composition | |
| CN103525431B (en) | A kind of liquid-crystal composition of quick response | |
| CN103361078B (en) | Liquid crystal composition containing difluoromethylene ether | |
| CN112574757B (en) | Liquid crystal composition and photoelectric display device | |
| CN113234448A (en) | Liquid crystal composition, liquid crystal display element and liquid crystal display | |
| CN115181577A (en) | Positive dielectric anisotropy liquid crystal composition, liquid crystal display element or liquid crystal display | |
| CN112574756B (en) | Liquid crystal composition and photoelectric display device | |
| CN113736479A (en) | Negative dielectric anisotropy liquid crystal composition and liquid crystal display device | |
| CN111454734A (en) | Liquid crystal composition, liquid crystal display element and liquid crystal display | |
| CN111518569A (en) | Liquid crystal composition, liquid crystal display element and liquid crystal display | |
| CN103468271B (en) | Positive dielectric anisotropy liquid crystal composition | |
| CN111518570A (en) | Liquid crystal composition, liquid crystal display element and liquid crystal display | |
| CN111363560A (en) | Liquid crystal composition, liquid crystal display element and liquid crystal display | |
| CN111334312A (en) | Liquid crystal composition, liquid crystal display element and liquid crystal display | |
| CN111471469A (en) | Liquid crystal composition, liquid crystal display element and liquid crystal display | |
| CN111454733A (en) | Liquid crystal composition, liquid crystal display element and liquid crystal display | |
| CN111454735A (en) | Liquid crystal composition, liquid crystal display element and liquid crystal display | |
| CN113493692A (en) | Negative liquid crystal medium, liquid crystal display element or liquid crystal display | |
| CN115125008A (en) | Positive dielectric anisotropy liquid crystal composition, liquid crystal display element or liquid crystal display |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |