CN117511560A - Liquid crystal composition and display panel - Google Patents
Liquid crystal composition and display panel Download PDFInfo
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- CN117511560A CN117511560A CN202310145201.XA CN202310145201A CN117511560A CN 117511560 A CN117511560 A CN 117511560A CN 202310145201 A CN202310145201 A CN 202310145201A CN 117511560 A CN117511560 A CN 117511560A
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 92
- 239000000203 mixture Substances 0.000 title claims abstract description 62
- 150000001875 compounds Chemical class 0.000 claims abstract description 94
- 125000004432 carbon atom Chemical group C* 0.000 claims description 126
- 125000000217 alkyl group Chemical group 0.000 claims description 45
- 125000003342 alkenyl group Chemical group 0.000 claims description 37
- 125000000304 alkynyl group Chemical group 0.000 claims description 37
- 239000000758 substrate Substances 0.000 claims description 16
- 238000006467 substitution reaction Methods 0.000 claims description 13
- 125000005842 heteroatom Chemical group 0.000 claims description 12
- 125000003302 alkenyloxy group Chemical group 0.000 claims description 10
- 125000005133 alkynyloxy group Chemical group 0.000 claims description 10
- 125000003545 alkoxy group Chemical group 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 229910052717 sulfur Inorganic materials 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 150000004826 dibenzofurans Chemical class 0.000 abstract description 3
- TXCDCPKCNAJMEE-UHFFFAOYSA-N dibenzofuran Chemical compound C1=CC=C2C3=CC=CC=C3OC2=C1 TXCDCPKCNAJMEE-UHFFFAOYSA-N 0.000 abstract 2
- -1 prop-1-enyl Chemical group 0.000 description 38
- 238000000638 solvent extraction Methods 0.000 description 6
- 239000010408 film Substances 0.000 description 5
- 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 3
- 125000004975 3-butenyl group Chemical group C(CC=C)* 0.000 description 2
- 125000000474 3-butynyl group Chemical group [H]C#CC([H])([H])C([H])([H])* 0.000 description 2
- 230000002596 correlated effect Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 125000001424 substituent group Chemical group 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 125000004972 1-butynyl group Chemical group [H]C([H])([H])C([H])([H])C#C* 0.000 description 1
- 125000004974 2-butenyl group Chemical group C(C=CC)* 0.000 description 1
- 125000000069 2-butynyl group Chemical group [H]C([H])([H])C#CC([H])([H])* 0.000 description 1
- HBAQYPYDRFILMT-UHFFFAOYSA-N 8-[3-(1-cyclopropylpyrazol-4-yl)-1H-pyrazolo[4,3-d]pyrimidin-5-yl]-3-methyl-3,8-diazabicyclo[3.2.1]octan-2-one Chemical class C1(CC1)N1N=CC(=C1)C1=NNC2=C1N=C(N=C2)N1C2C(N(CC1CC2)C)=O HBAQYPYDRFILMT-UHFFFAOYSA-N 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- YCLAMANSVUJYPT-UHFFFAOYSA-L aluminum chloride hydroxide hydrate Chemical compound O.[OH-].[Al+3].[Cl-] YCLAMANSVUJYPT-UHFFFAOYSA-L 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011978 dissolution method Methods 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 238000002474 experimental method Methods 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
- 239000003112 inhibitor Substances 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 239000008204 material by function Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- SYSQUGFVNFXIIT-UHFFFAOYSA-N n-[4-(1,3-benzoxazol-2-yl)phenyl]-4-nitrobenzenesulfonamide Chemical class C1=CC([N+](=O)[O-])=CC=C1S(=O)(=O)NC1=CC=C(C=2OC3=CC=CC=C3N=2)C=C1 SYSQUGFVNFXIIT-UHFFFAOYSA-N 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000010409 thin film 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
Classifications
-
- 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
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
-
- 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
- C09K19/06—Non-steroidal liquid crystal compounds
- C09K19/34—Non-steroidal liquid crystal compounds containing at least one heterocyclic ring
- C09K19/3402—Non-steroidal liquid crystal compounds containing at least one heterocyclic ring having oxygen as hetero atom
-
- 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
- C09K19/06—Non-steroidal liquid crystal compounds
- C09K19/34—Non-steroidal liquid crystal compounds containing at least one heterocyclic ring
- C09K19/3402—Non-steroidal liquid crystal compounds containing at least one heterocyclic ring having oxygen as hetero atom
- C09K19/3405—Non-steroidal liquid crystal compounds containing at least one heterocyclic ring having oxygen as hetero atom the heterocyclic ring being a five-membered ring
-
- 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
- C09K19/06—Non-steroidal liquid crystal compounds
- C09K19/34—Non-steroidal liquid crystal compounds containing at least one heterocyclic ring
- C09K19/3491—Non-steroidal liquid crystal compounds containing at least one heterocyclic ring having sulfur as hetero atom
-
- 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
- C09K19/06—Non-steroidal liquid crystal compounds
- C09K19/34—Non-steroidal liquid crystal compounds containing at least one heterocyclic ring
- C09K19/3491—Non-steroidal liquid crystal compounds containing at least one heterocyclic ring having sulfur as hetero atom
- C09K19/3494—Non-steroidal liquid crystal compounds containing at least one heterocyclic ring having sulfur as hetero atom the heterocyclic ring containing sulfur and oxygen atoms
-
- 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
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
-
- 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
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1345—Conductors connecting electrodes to cell terminals
-
- 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
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
-
- 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
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
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- 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
- C09K19/06—Non-steroidal liquid crystal compounds
- C09K19/34—Non-steroidal liquid crystal compounds containing at least one heterocyclic ring
- C09K19/3402—Non-steroidal liquid crystal compounds containing at least one heterocyclic ring having oxygen as hetero atom
- C09K2019/3422—Non-steroidal liquid crystal compounds containing at least one heterocyclic ring having oxygen as hetero atom the heterocyclic ring being a six-membered ring
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- Crystallography & Structural Chemistry (AREA)
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- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
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- Microelectronics & Electronic Packaging (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Liquid Crystal Substances (AREA)
Abstract
The embodiment of the application discloses a liquid crystal composition and a display panel, wherein the liquid crystal composition comprises a first compound, and the structural formula of the first compound is as follows:the liquid crystal composition provided by the application comprises a liquid crystal compound containing dibenzofuran derivatives, and the liquid crystal compound contains dibenzofuran derivativesThe compound has higher negative dielectric anisotropy, good liquid crystal intersolubility, relatively low rotational viscosity and the like, and can reduce response time and improve contrast ratio when being applied to display devices.
Description
Technical Field
The application relates to the technical field of display, in particular to a liquid crystal composition and a display panel.
Background
The contrast and response speed of the liquid crystal material are key factors for improving the display performance of the display, and the optical, electrical and mechanical properties of the liquid crystal molecules depend on the structure and substituent groups of the liquid crystal molecules.
With the development of display devices, development of a liquid crystal material having a faster response is desired.
Disclosure of Invention
The embodiment of the invention provides a liquid crystal composition and a display panel, which are used for solving the technical problem that the response speed of the existing liquid crystal material is to be improved.
In order to solve the problems, the technical scheme provided by the invention is as follows:
the embodiment of the application provides a liquid crystal composition, which comprises a first compound, wherein the structural formula of the first compound is as follows:
wherein R is 1 、R 2 Independently of one another, selected from H, F, cl, br, I, CN, SCN, NCS, SF 5 An alkyl group having 1 to 15 carbon atoms, an alkenyl group having 2 to 15 carbon atoms, or an alkynyl group having 2 to 15 carbon atoms, or R 1 、R 2 R is selected independently of one another from alkyl having 1 to 15 carbon atoms, alkenyl having 2 to 15 carbon atoms or alkynyl having 2 to 15 carbon atoms 1 、R 2 Is H, CN or CF 3 Monosubstituted, or R 1 、R 2 One or more CH(s) 2 The radicals being independently of one another replaced by-O-, -S-, -SO 2 -、-CO-、-C(O)O-、-OC(O)-、-OC(O)O-、-CF 2 O-、-OCF 2 -、-CH 2 CH 2 -、-CF 2 CF 2 -、-CF 2 CH 2 -、-CH 2 CF 2 -、-CHF-CHF-、-CH 2 O-、-OCH 2 -, -CF=CH-, -CH=CF-, -CF=CF-, -CH=CH-or-C≡C-substitution and making the hetero atoms thereof not directly bonded, or R is 1 、R 2 Independently of each other, by F, cl, br or I;
X 1 、X 2 、X 3 、X 4 independently of one another selected from CH 2 、C＝O、CF 2 O or S, or X 1 、X 2 Selected from CH 2 When X is 1 、X 2 Independently of each other, one or both H's are replaced by F, cl, br or I.
In some embodiments of the present application, R 1 、R 2 Independently of one another, from H or F, and R 1 、R 2 And not H at the same time.
In some embodiments of the present application, R 1 、R 2 Independently of one another selected from alkyl groups having 1 to 7 carbon atoms, alkenyl groups having 2 to 7 carbon atoms, alkynyl groups having 2 to 7 carbon atoms or CF 3 The method comprises the steps of carrying out a first treatment on the surface of the Or R is 1 、R 2 Independently of one another selected from alkyl having 1 to 7 carbon atoms, alkenyl having 2 to 7 carbon atoms, alkynyl having 2 to 7 carbon atoms, and R 1 、R 2 One or two CH 2 The radicals being replaced by-O-, -CO-, -C (O) O-, -OC (O) -, -CF 2 O-、-OCF 2 -、-CH 2 O、-OCH 2 -substitution and non-direct bonding of the heteroatoms therein.
In some embodiments of the present application, R 1 、R 2 Independently of one another selected from alkyl groups having 2 to 7 carbon atoms, alkenyl groups having 3 to 6 carbon atoms, alkynyl groups having 3 to 6 carbon atoms or CF 3 The method comprises the steps of carrying out a first treatment on the surface of the Or R is 1 、R 2 Independently of one another selected from alkyl having 2 to 7 carbon atoms, alkenyl having 3 to 6 carbon atoms, alkynyl having 3 to 6 carbon atoms, and R 1 、R 2 One or two CH 2 The radicals being replaced by-O-, -CO-, -C (O) O-, -OC (O) -, -CF 2 O-、-OCF 2 -、-CH 2 O、-OCH 2 -substitution and non-direct bonding of the heteroatoms therein.
In some embodiments of the present application, the structural formula of the first compound is selected from at least one of the structural formulae shown in formulae IA to II:
wherein Alkyl is selected from Alkyl having 1-15 carbon atoms, alkenyl having 2-15 carbon atoms or alkynyl having 2-15 carbon atoms;
or, alkyl is selected from Alkyl having 1 to 15 carbon atoms, alkenyl having 2 to 15 carbon atoms or alkynyl having 2 to 15 carbon atoms, and one or two CH's in the Alkyl 2 The radicals being independently of one another replaced by-O-, -CO-, -C (O) O-, -OC (O) -, -CF 2 O-、-OCF 2 -、-CH 2 O、-OCH 2 -substitution and non-direct bonding of the heteroatoms therein.
In some embodiments of the present application, the first compound has a structural formula selected from at least one of the following structural formulas:
in some embodiments of the present application, the liquid crystal composition further comprises a second compound selected from at least one of the compounds represented by formulas ii 1 to ii 9:
wherein R is 3 、R 4 Independently of one another, from alkyl having 1 to 10 carbon atoms, alkoxy having 1 to 10 carbon atoms, alkenyl having 2 to 10 carbon atoms, alkenyloxy having 2 to 10 carbon atoms, alkynyl having 2 to 10 carbon atoms or alkynyloxy having 2 to 10 carbon atoms; or, R 3 、R 4 Independently of one another, from alkyl groups having 1 to 10 carbon atoms, from 1 to 10 carbon atomsAlkoxy of atoms, alkenyl of 2 to 10 carbon atoms, alkenyloxy of 2 to 10 carbon atoms, alkynyl of 2 to 10 carbon atoms or alkynyloxy of 2 to 10 carbon atoms, and R 3 And R is 4 Independently of each other, is substituted by F, cl, br or I.
In some embodiments of the present application, the liquid crystal composition further comprises a third compound selected from at least one of the compounds represented by formulas iii 1 to iii 9:
wherein R is 5 And R is 6 Independently of one another, from alkyl having 1 to 10 carbon atoms, alkoxy having 1 to 10 carbon atoms, alkenyl having 2 to 10 carbon atoms, alkenyloxy having 2 to 10 carbon atoms, alkynyl having 2 to 10 carbon atoms or alkynyloxy having 2 to 10 carbon atoms; or, R 5 And R is 6 Independently of one another selected from alkyl having 1 to 10 carbon atoms, alkoxy having 1 to 10 carbon atoms, alkenyl having 2 to 10 carbon atoms, alkenyloxy having 2 to 10 carbon atoms, alkynyl having 2 to 10 carbon atoms or alkynyloxy having 2 to 10 carbon atoms, and R 5 And R is 6 Independently of each other, is substituted by F, cl, br or I.
In some embodiments of the present application, the liquid crystal composition comprises, relative to the total weight of the liquid crystal composition:
1% -35% by mass of the first compound;
1% -75% by mass of the second compound; and
and the mass fraction of the third compound is 1-50%.
The embodiment of the invention also provides a display panel which comprises an array substrate, a color film substrate and a liquid crystal layer, wherein the array substrate and the color film substrate are oppositely arranged, the liquid crystal layer is clamped between the array substrate and the color film substrate, and the material of the liquid crystal layer comprises the liquid crystal composition of any embodiment.
The beneficial effects of the invention are as follows: the liquid crystal composition provided by the embodiment of the application comprises the liquid crystal compound containing the dibenzofuran derivative, and the compound has higher negative dielectric anisotropy, good liquid crystal intersolubility, relatively low rotational viscosity and the like, and can reduce response time and improve contrast ratio when applied to a display device.
Drawings
In order to more clearly illustrate the embodiments or the technical solutions in the prior art, the following description will briefly introduce the drawings that are needed in the embodiments or the description of the prior art, it is obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
The embodiment of the application provides a liquid crystal composition, which comprises a first compound, wherein the structural formula of the first compound is as follows:
wherein R is 1 、R 2 Independently of one another, selected from H, F, cl, br, I, CN, SCN, NCS, SF 5 An alkyl group having 1 to 15 carbon atoms, an alkenyl group having 2 to 15 carbon atoms, or an alkynyl group having 2 to 15 carbon atoms.
R 1 、R 2 R, independently of one another, is selected from the abovementioned alkyl, alkenyl or alkynyl radicals 1 、R 2 The terminal groups of (C) may be substituted by H,CN or CF 3 Mono-substitution; r is R 1 、R 2 One or more CH(s) 2 The radicals can be replaced independently of one another by-O-, -S-, -SO 2 -、-CO-、-C(O)O-、-OC(O)-、-OC(O)O-、-CF 2 O-、-OCF 2 -、-CH 2 CH 2 -、-CF 2 CF 2 -、-CF 2 CH 2 -、-CH 2 CF 2 -、-CHF-CHF-、-CH 2 O-、-OCH 2 -, -CF=CH-, -CH=CF-, -CF-, -CH=CH-, or-C≡C-substituted and having heteroatoms not directly bonded; r is R 1 、R 2 May also be substituted independently of one another by F, cl, br or I.
X 1 、X 2 、X 3 、X 4 Independently of one another selected from CH 2 、C＝O、CF 2 O or S, wherein X 1 、X 2 Selected from CH 2 When X is 1 、X 2 May be independently substituted with F, cl, br, I.
The liquid crystal composition provided by the embodiment of the application comprises the liquid crystal compound containing the dibenzofuran derivative, and the compound has higher negative dielectric anisotropy, good liquid crystal intersolubility, relatively low rotational viscosity and the like, and can reduce response time and improve contrast ratio when applied to a display device.
In some embodiments, the first compound may have the structural formula:wherein R and R 1 The groups represented are the same. The synthetic route for the first compound is shown below:
if R is 1 、R 2 When each represents an alkyl group, the alkyl groups may be linear or branched. In the examples of the present application, R 1 、R 2 Preferably a linear alkyl group.
If R is 1 And R is 2 Each independently of the others represents an alkenyl group having 2 to 15 carbon atoms or an alkynyl group having 2 to 15 carbon atoms, which alkenyl or alkynyl group may be a straight-chain or branched alkenyl or alkynyl group, preferably a straight-chain alkenyl or alkynyl group.
In some embodiments, R 1 、R 2 Can be selected from H or F independently of one another, and R 1 、R 2 And not H at the same time.
In some embodiments, R 1 、R 2 Can be selected independently of one another from alkyl groups having 1 to 7 carbon atoms, such as methyl, ethyl, propyl, butyl, pentyl, hexyl or heptyl.
R 1 、R 2 But also can be selected independently of one another from alkenyl having 2 to 15 carbon atoms or alkynyl having 2 to 15 carbon atoms, such as vinyl, prop-1-enyl, prop-2-enyl, prop-1-enyl, but-2-enyl, but-3-enyl, pent-1-enyl, pent-2-enyl, pent-3-enyl, pent-4-enyl, hex-1-enyl, hex-2-enyl, hex-3-enyl, hex-4-enyl, hex-5-enyl, hept-1-enyl, hept-2-enyl, hept-3-enyl, hept-4-enyl, hept-5-enyl, hept-6-enyl, ethynyl, prop-1-ynyl, prop-2-ynyl, but-1-ynyl, but-2-ynyl, but-3-ynyl, pent-1-ynyl, pent-2-ynyl, pent-3-alkynyl, pent-4-ynyl, hex-1-ynyl, hex-2-ynyl, hex-3-ynyl, hex-4-alkynyl, hept-5-ynyl, hept-1-enyl, hept-1-alkynyl, and the isomeric forms E and E-6-alkynyl. Among alkenyl and alkynyl groups, prop-2-enyl, but-3-enyl, pent-2-enyl, pent-3-enyl, pent-4-enyl, prop-2-ynyl, but-3-ynyl, pent-2-ynyl, pent-3-ynyl or pent-4-ynyl are preferred.
When R is 1 、R 2 R, independently of one another, is selected from the above alkyl, the above alkenyl or the above alkynyl 1 、R 2 One or two CH 2 The radicals may independently be replaced by-O-, -CO-, -C (O) O-, -OC (O) -, -CF 2 O-、-OCF 2 -、-CH 2 O、-OCH 2 -substitution and non-direct bonding of heteroatoms.
Further, R 1 、R 2 Can be selected independently of one another from alkyl groups having 2 to 7 carbon atoms, alkenyl groups having 3 to 6 carbon atoms, alkynyl groups having 3 to 6 carbon atoms or CF 3 。
When R is 1 、R 2 R, independently of one another, is selected from the abovementioned alkyl radicals having 2 to 7 carbon atoms, alkenyl radicals having 3 to 6 carbon atoms or alkynyl radicals having 3 to 6 carbon atoms 1 、R 2 One or two CH 2 The radicals may independently be replaced by-O-, -CO-, -C (O) O-, -OC (O) -, -CF 2 O-、-OCF 2 -、-CH 2 O、-OCH 2 -substitution and non-direct bonding of heteroatoms.
Optionally, the structural formula of the first compound is at least one of structural formulas shown in formula IA to formula II:
wherein, the Alkyl is selected from Alkyl with 1-15 carbon atoms, alkenyl with 2-15 carbon atoms or alkynyl with 2-15 carbon atoms;
or, alkyl is selected from Alkyl having 1 to 15 carbon atoms, alkenyl having 2 to 15 carbon atoms or alkynyl having 2 to 15 carbon atoms, and one or two CH's in the Alkyl 2 The radicals being independently of one another replaced by-O-, -CO-, -C (O) O-, -OC (O) -, -CF 2 O-、-OCF 2 -、-CH 2 O、-OCH 2 -substitution and non-direct bonding of the heteroatoms therein.
In some embodiments of the present application, the structural formula of the compound may preferably be at least one of the following structural formulas:
/>
the first compounds mentioned in any of the above examples, as well as the groups, substituents thereof, have asymmetric or chiral centers and can exist as isomers, such as pure enantiomers, diastereomers, E or Z isomers, or as mixtures of a plurality of isomers in any desired ratio, for example as racemates, E/Z isomer mixtures.
Further, the liquid crystal composition of the embodiments of the present application further includes a second compound selected from at least one of compounds represented by formulas ii 1 to ii 9:
/>
wherein R is 3 、R 4 Independently of one another, from alkyl having 1 to 10 carbon atoms, alkoxy having 1 to 10 carbon atoms, alkenyl having 2 to 10 carbon atoms, alkenyloxy having 2 to 10 carbon atoms, alkynyl having 2 to 10 carbon atoms or alkynyloxy having 2 to 10 carbon atoms. Wherein R is 3 、R 4 May be substituted independently of one another by F, cl, br or I.
Further, the liquid crystal composition further includes a third compound selected from at least one of compounds represented by formulas iii 1 to iii 9:
wherein R is 5 And R is 6 Each otherIndependently selected from alkyl groups having 1 to 10 carbon atoms, alkoxy groups having 1 to 10 carbon atoms, alkenyl groups having 2 to 10 carbon atoms, alkenyloxy groups having 2 to 10 carbon atoms, alkynyl groups having 2 to 10 carbon atoms, or alkynyloxy groups having 2 to 10 carbon atoms. Wherein R is 5 And R is 6 May be substituted independently of one another by F, cl, br or I.
Further, the liquid crystal composition comprises the following components in weight percent, relative to the total weight of the liquid crystal composition: 1% -35% of the first compound; 1% -75% of said second compound; 1% -50% of said third compound.
The liquid crystal composition can contain other functional materials such as chiral agents, initiators, polymerization inhibitors, organic solvents, other auxiliary agents and the like besides the first compound, the second compound and the third compound when the liquid crystal composition is applied to a display device.
Preferably, the liquid crystal composition of the embodiment of the invention comprises the following components in percentage by weight: 1% -35% of a first compound; 1% -75% of a second compound; 1% -50% of a third compound.
Further, the liquid crystal composition comprises the following components in percentage by weight: 1% -25% of a first compound; 45% -70% of a second compound; 10% -40% of a third compound.
Further, the liquid crystal composition comprises the following components in percentage by weight: 1% -15% of a first compound; 50% -70% of a second compound; 15% -30% of a third compound.
In a specific embodiment, the liquid crystal composition comprises the following components in percentage by weight: 1% to 20% of a first compound of formula IA; 0-10% of a first compound of formula IB; (3) 0-10% of a first compound represented by formula IC; 0-10% of a first compound represented by formula ID; 0-10% of a first compound of formula IE; 0-10% of a first compound of formula IF; 0-10% of a first compound of formula IG; 0-10% of a first compound of formula IH; 0-10% of a first compound of formula II; (10) 45% -70% of a second compound; 10% -40% of a third compound.
Preferably, the liquid crystal composition comprises the following components in percentage by weight: 1% to 15% of a first compound of formula IA; 0-5% of a first compound of formula IB; (3) 0-5% of a first compound represented by formula IC; 0-5% of a first compound represented by formula ID; 0-5% of a first compound of formula IE; 0-5% of a first compound of formula IF; 0-5% of a first compound of formula IG; 0-5% of a first compound of formula IH; 0-5% of a first compound of formula II; (10) 45% -70% of a second compound; 10% -35% of a third compound.
Particularly preferably, the liquid crystal composition comprises the following components in percentage by weight: 3% -13% of a first compound represented by formula IA; 0-5% of a first compound of formula IB; (3) 0-5% of a first compound represented by formula IC; 0-5% of a first compound represented by formula ID; 0-5% of a first compound of formula IE; 0-5% of a first compound of formula IF; 0-5% of a first compound of formula IG; 0-5% of a first compound of formula IH; 0-5% of a first compound of formula II; (10) 45% -70% of a second compound; 15% -30% of a third compound.
The preparation of the liquid crystal composition can be carried out by adopting a thermal dissolution method, and comprises the following steps:
s10, weighing liquid crystal compounds (a first compound, a second compound and a third compound) according to mass percentage, wherein the weighing and adding sequence has no specific requirement, and the liquid crystal compounds can be weighed and mixed at one time according to the sequence from low melting point to high melting point; s20, heating and stirring at 60-100 ℃ to fully dissolve and mix the components; s30, cooling to room temperature, and packaging to obtain a target sample.
The inventors conducted mixed crystal experiments on the liquid crystal compositions thus obtained, and the specific examples are shown in tables 1 to 6 below. According to a detection method conventional in the art, various performance parameters of the liquid crystal composition of the embodiment of the invention are obtained, wherein specific meanings of the performance parameters in the table are as follows: the temperature unit is DEG C; tni represents the clearing point (unit:. Degree. C.) of the liquid crystal composition; Δn represents optical anisotropy at 25 ℃, n e Refractive index being extraordinary ray; γ1 generationTable rotational viscosity at 25 ℃ (unit: mPa.s); delta epsilon represents dielectric anisotropy at 25 ℃, and epsilon is dielectric constant perpendicular to the long axis of liquid crystal molecules; k (K) 11 K is the coefficient of elasticity of the stretch 33 Is the bending modulus of elasticity.
TABLE 1 component partitioning and Performance parameters of the liquid Crystal composition of example 1
TABLE 2 component partitioning and Performance parameters of the liquid Crystal composition of example 2
TABLE 3 component partitioning and Performance parameters of the liquid Crystal composition of example 3
TABLE 4 component partitioning and Performance parameters of the liquid Crystal composition of example 4
TABLE 5 component partitioning and Performance parameters of the liquid Crystal composition of example 5
TABLE 6 component partitioning and Performance parameters of the liquid Crystal composition of example 6
The contrast of the liquid crystal is related to the dielectric anisotropy of the liquid crystal, and when the liquid crystal has dielectric negativity, the contrast can be improved, and the measured data show that the dielectric anisotropy delta epsilon of the liquid crystal composition of the embodiment of the invention is between-4.2 and-3.75, and has higher dielectric negativity, so that the contrast of the liquid crystal composition can be improved.
The response time of the liquid crystal is positively correlated with the rotational viscosity γ1, and is correlated with the dielectric anisotropy Δεand the splay elastic coefficient K 11 Is inversely related; in the liquid crystal composition provided by the embodiment of the invention, the first compound has higher dielectric negativity, so that the dielectric negativity of the liquid crystal can be improved, and the response time can be reduced; the second compound has dielectric neutrality and low viscosity, can reduce the viscosity of liquid crystal and reduce response time; the third compound has dielectric negativity, and delta n, tni and viscosity can be adjusted according to requirements, so that the liquid crystal property is adjusted as a whole. From the above measured data, the liquid crystal composition provided in the examples of the present invention has a rotational viscosity γ1 of 79 to 90mpa·s, has a low rotational viscosity, and can reduce the response time; k (K) 11 13.85-15.7, has higher splay elastic coefficient and can reduce response time; dielectric anisotropy delta epsilon is between-4.2 and-3.75, has higher dielectric negativity, and can reduce response time; the clearing point Tni of the liquid crystal composition is at 80 ℃ or above, has higher clearing point, and can have ideal liquid crystal phase in a wide temperature range.
Based on the above embodiment, as shown in fig. 1, the embodiment of the present invention further provides a display panel 100, which includes an array substrate 10 and a color film substrate 30 disposed opposite to each other, and a liquid crystal layer 20 sandwiched between the array substrate 10 and the color film substrate 30, where the material of the liquid crystal layer 20 includes the liquid crystal composition of the above embodiment. The liquid crystal composition is applied to a display panel, so that the response time of the display panel can be reduced, and the contrast ratio of the display panel can be improved.
The array substrate 10 of the display panel 100 includes a thin film transistor array for driving the liquid crystal layer to emit light. The display panel 100 further includes a backlight module disposed on a side of the array substrate 10 facing away from the liquid crystal layer 20, where the backlight module is configured to provide a backlight source for the liquid crystal layer 20.
The liquid crystal composition can be applied to watches, mobile phones, televisions, computers and other displays, and is applicable to VA, ECB, PALC, FFS or IPS and other types of displays.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.
The above describes in detail a liquid crystal composition and a display panel provided by the embodiments of the present invention, and specific examples are applied herein to illustrate the principles and embodiments of the present invention, and the above description of the embodiments is only for helping to understand the technical solution and core ideas of the present invention; those of ordinary skill in the art will appreciate that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (10)
1. A liquid crystal composition comprising a first compound having the formula:
wherein R is 1 、R 2 Independently of one another, selected from H, F, cl, br, I, CN, SCN, NCS, SF 5 An alkyl group having 1 to 15 carbon atoms, an alkenyl group having 2 to 15 carbon atoms, or an alkynyl group having 2 to 15 carbon atoms, or R 1 、R 2 R is selected independently of one another from alkyl having 1 to 15 carbon atoms, alkenyl having 2 to 15 carbon atoms or alkynyl having 2 to 15 carbon atoms 1 、R 2 Is H, CN or CF 3 Monosubstituted, or R 1 、R 2 One or more CH(s) 2 The radicals being independently of one another replaced by-O-, -S-, -SO 2 -、-CO-、-C(O)O-、-OC(O)-、-OC(O)O-、-CF 2 O-、-OCF 2 -、-CH 2 CH 2 -、-CF 2 CF 2 -、-CF 2 CH 2 -、-CH 2 CF 2 -、-CHF-CHF-、-CH 2 O-、-OCH 2 -, -CF=CH-, -CH=CF-, -CF=CF-, -CH=CH-or-C≡C-substitution and making the hetero atoms thereof not directly bonded, or R is 1 、R 2 Independently of each other, by F, cl, br or I;
X 1 、X 2 、X 3 、X 4 independently of one another selected from CH 2 、C＝O、CF 2 O or S, or X 1 、X 2 Selected from CH 2 When X is 1 、X 2 Independently of each other, one or both H's are replaced by F, cl, br or I.
2. A liquid crystal composition according to claim 1, wherein R 1 、R 2 Independently of one another, from H or F, and R 1 、R 2 And not H at the same time.
3. The liquid crystal composition according to claim 1, wherein R 1 、R 2 Independently of one another selected from alkyl groups having 1 to 7 carbon atoms, alkenyl groups having 2 to 7 carbon atoms, alkynyl groups having 2 to 7 carbon atoms or CF 3 The method comprises the steps of carrying out a first treatment on the surface of the Or R is 1 、R 2 Independently of one another selected from alkyl having 1 to 7 carbon atoms, alkenyl having 2 to 7 carbon atoms, alkynyl having 2 to 7 carbon atoms, and R 1 、R 2 One or two CH 2 The radicals being replaced by-O-, -CO-, -C (O) O-, -OC (O) -, -CF 2 O-、-OCF 2 -、-CH 2 O、-OCH 2 -substitution and non-direct bonding of the heteroatoms therein.
4. A liquid crystal composition according to claim 3, wherein R 1 、R 2 Independently of one another selected from alkyl groups having 2 to 7 carbon atoms, alkenyl groups having 3 to 6 carbon atoms, alkynyl groups having 3 to 6 carbon atoms or CF 3 The method comprises the steps of carrying out a first treatment on the surface of the Or R is 1 、R 2 Independently of one another, from alkyl groups having 2 to 7 carbon atoms, from 3 to 6 carbon atomsAlkenyl of a child, alkynyl having 3-6 carbon atoms, and R 1 、R 2 One or two CH 2 The radicals being replaced by-O-, -CO-, -C (O) O-, -OC (O) -, -CF 2 O-、-OCF 2 -、-CH 2 O、-OCH 2 -substitution and non-direct bonding of the heteroatoms therein.
5. The liquid crystal composition according to claim 1, wherein the structural formula of the first compound is selected from at least one of structural formulas shown in formulas IA to II:
wherein Alkyl is selected from Alkyl having 1-15 carbon atoms, alkenyl having 2-15 carbon atoms or alkynyl having 2-15 carbon atoms;
or, alkyl is selected from Alkyl having 1 to 15 carbon atoms, alkenyl having 2 to 15 carbon atoms or alkynyl having 2 to 15 carbon atoms, and one or two CH's in the Alkyl 2 The radicals being independently of one another replaced by-O-, -CO-, -C (O) O-, -OC (O) -, -CF 2 O-、-OCF 2 -、-CH 2 O、-OCH 2 -substitution and non-direct bonding of the heteroatoms therein.
6. The liquid crystal composition according to claim 1, wherein the structural formula of the first compound is selected from at least one of the following structural formulas:
7. the liquid crystal composition according to claim 1, further comprising a second compound selected from at least one of compounds represented by formulas ii 1 to ii 9:
wherein R is 3 、R 4 Independently of one another, from alkyl having 1 to 10 carbon atoms, alkoxy having 1 to 10 carbon atoms, alkenyl having 2 to 10 carbon atoms, alkenyloxy having 2 to 10 carbon atoms, alkynyl having 2 to 10 carbon atoms or alkynyloxy having 2 to 10 carbon atoms; or, R 3 、R 4 Independently of one another selected from alkyl having 1 to 10 carbon atoms, alkoxy having 1 to 10 carbon atoms, alkenyl having 2 to 10 carbon atoms, alkenyloxy having 2 to 10 carbon atoms, alkynyl having 2 to 10 carbon atoms or alkynyloxy having 2 to 10 carbon atoms, and R 3 And R is 4 Independently of each other, is substituted by F, cl, br or I.
8. The liquid crystal composition according to claim 7, further comprising a third compound selected from at least one of compounds represented by formulas iii 1 to iii 9:
wherein R is 5 And R is 6 Independently of one another, from alkyl having 1 to 10 carbon atoms, alkoxy having 1 to 10 carbon atoms, alkenyl having 2 to 10 carbon atoms, alkenyloxy having 2 to 10 carbon atoms, alkynyl having 2 to 10 carbon atoms or alkynyloxy having 2 to 10 carbon atoms; or, R 5 And R is 6 Independently of one another selected from alkyl having 1 to 10 carbon atoms, alkoxy having 1 to 10 carbon atoms, alkenyl having 2 to 10 carbon atoms, alkenyloxy having 2 to 10 carbon atoms, alkynyl having 2 to 10 carbon atoms or alkynyloxy having 2 to 10 carbon atoms, and R 5 And R is 6 Independently of each other, is substituted by F, cl, br or I.
9. The liquid crystal composition of claim 8, wherein the liquid crystal composition comprises, relative to the total weight of the liquid crystal composition:
1% -35% by mass of the first compound;
1% -75% by mass of the second compound; and
and the mass fraction of the third compound is 1-50%.
10. A display panel comprising an array substrate and a color film substrate which are oppositely arranged, and a liquid crystal layer which is arranged between the array substrate and the color film substrate in a sandwiched manner, wherein the material of the liquid crystal layer comprises the liquid crystal composition as claimed in any one of claims 1 to 9.
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