CN115710514A - Liquid crystal composition and liquid crystal display panel - Google Patents
Liquid crystal composition and liquid crystal display panel Download PDFInfo
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- CN115710514A CN115710514A CN202211400148.5A CN202211400148A CN115710514A CN 115710514 A CN115710514 A CN 115710514A CN 202211400148 A CN202211400148 A CN 202211400148A CN 115710514 A CN115710514 A CN 115710514A
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 174
- 239000000203 mixture Substances 0.000 title claims abstract description 96
- 150000001875 compounds Chemical class 0.000 claims abstract description 91
- 125000004432 carbon atom Chemical group C* 0.000 claims abstract description 59
- 125000003342 alkenyl group Chemical group 0.000 claims abstract description 33
- 125000000217 alkyl group Chemical group 0.000 claims abstract description 32
- 125000000304 alkynyl group Chemical group 0.000 claims abstract description 32
- 125000003545 alkoxy group Chemical group 0.000 claims abstract description 23
- 125000003302 alkenyloxy group Chemical group 0.000 claims abstract description 22
- 125000005133 alkynyloxy group Chemical group 0.000 claims abstract description 20
- 150000005215 alkyl ethers Chemical class 0.000 claims abstract description 6
- -1 alkenyl ether Chemical compound 0.000 claims description 77
- 239000000758 substrate Substances 0.000 claims description 18
- 125000005842 heteroatom Chemical group 0.000 claims description 13
- 238000006467 substitution reaction Methods 0.000 claims description 5
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 10
- 238000005452 bending Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 125000004975 3-butenyl group Chemical group C(CC=C)* 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 5
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 5
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 5
- 125000004115 pentoxy group Chemical group [*]OC([H])([H])C([H])([H])C([H])([H])C(C([H])([H])[H])([H])[H] 0.000 description 5
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 5
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 5
- 125000004973 1-butenyl group Chemical group C(=CCC)* 0.000 description 4
- 125000004974 2-butenyl group Chemical group C(C=CC)* 0.000 description 4
- 125000006023 1-pentenyl group Chemical group 0.000 description 3
- 125000006017 1-propenyl group Chemical group 0.000 description 3
- 125000006024 2-pentenyl group Chemical group 0.000 description 3
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 3
- 125000000474 3-butynyl group Chemical group [H]C#CC([H])([H])C([H])([H])* 0.000 description 2
- 125000001931 aliphatic group Chemical group 0.000 description 2
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 2
- 230000002596 correlated effect Effects 0.000 description 2
- 230000000875 corresponding effect Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 125000001207 fluorophenyl group Chemical group 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 2
- 125000004972 1-butynyl group Chemical group [H]C([H])([H])C([H])([H])C#C* 0.000 description 1
- 125000000069 2-butynyl group Chemical group [H]C([H])([H])C#CC([H])([H])* 0.000 description 1
- JRLTTZUODKEYDH-UHFFFAOYSA-N 8-methylquinoline Chemical group C1=CN=C2C(C)=CC=CC2=C1 JRLTTZUODKEYDH-UHFFFAOYSA-N 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 238000010438 heat treatment Methods 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
- 238000000034 method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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Abstract
The invention provides a liquid crystal composition and a liquid crystal display panel, wherein the liquid crystal composition comprises one or more compounds represented by a formula I and one or more compounds represented by a formula II; the formula I is as follows:
the formula II is:
wherein m, n and o are independently of one another 0,1 or 2 and m + n + o.ltoreq.4; z 1 、Z 2 、Z 3 And Z 4 Independently of one another, is a single bond, -O-,; -C (O) O-, -OC (O) -, -CF 2 O‑、‑OCF 2 ‑、‑CH 2 CH 2 ‑、‑CH 2 O‑、‑OCH 2 Or an alkyl or alkyl ether having 1 to 7 carbon atoms; r is 1 、R 2 、R 3 、R 4 Independently of one another, is alkyl or alkoxy having 1 to 5 carbon atoms, or alkenyl, alkenyloxy, alkynyl or alkynyloxy having 2 to 5 carbon atoms;
independently of one another are
And is
At least one of which is
Description
Technical Field
The application relates to the field of display, in particular to a liquid crystal composition and a liquid crystal display panel.
Background
With the development of Display technology, flat panel Display devices such as Liquid Crystal Display (LCD) devices have advantages of high image quality, power saving, thin body, and wide application range, and thus are widely used in various consumer electronic products such as mobile phones, televisions, personal digital assistants, digital cameras, notebook computers, and desktop computers, and become the mainstream of Display devices.
In order to meet the requirements of various consumer electronic products, liquid crystal materials used for display elements and display devices in IPS display mode, FFS display mode, VA display mode, and the like are required to have (1) low driving voltage: the liquid crystal material has larger dielectric anisotropy; (2) quick response: the liquid crystal material has lower viscosity and higher elastic coefficient; (3) high temperature resistance: the liquid crystal material has higher clearing point; (4) high contrast: the liquid crystal material has proper optical anisotropy and dielectric negativity.
In order to achieve better display effect, the contrast, response time, and other properties of the conventional liquid crystal display panel need to be further improved.
Disclosure of Invention
The invention provides a liquid crystal composition and a liquid crystal display panel, which are used for improving the performances of the liquid crystal display panel such as contrast, response time and the like.
In order to solve the above problems, the technical scheme provided by the invention is as follows:
the invention provides a liquid crystal composition, which comprises one or more compounds represented by a formula I and one or more compounds represented by a formula II;
the formula I is specifically as follows:
wherein m, n and o are independently of one another 0,1 or 2 and m + n + o.ltoreq.4;
each Z 1 Each Z 2 、Z 3 And each Z 4 Independently of one another, is a single bond, -O-,; -C (O) O-, -OC (O) -, -CF 2 O-、-OCF 2 -、-CH 2 CH 2 -、-CF 2 CF 2 -、-CH 2 O、-OCH 2 -, -CH = CH-or-C ≡ C-, or an alkyl or alkyl ether having 1 to 7 carbon atoms, or an alkenyl, alkenyl ether, alkynyl or alkynyl ether having 2 to 7 carbon atoms; each Z 1 Each Z 2 、Z 3 And each Z 4 One or more of H in (a) may be substituted by F, cl, br, I;
R 1 and R 2 Independently of one another, H, F, cl, br, I, CN, SCN, NCS, SF 5 Or an alkyl or alkoxy group having 1 to 15 carbon atoms, or an alkenyl, alkenyloxy, alkynyl or alkynyloxy group having 1 to 15 carbon atoms; said R is 1 The terminal group of (A), the R 2 May be H, CN or CF 3 Monosubstitution, said R 1 And said R 2 In one or more CH 2 The radicals being optionally substituted by-O-, -C (O) O-, -OC (O) -, -CF 2 O-、-OCF 2 -、-CH 2 CH 2 -、-CF 2 CF 2 -、-CH 2 O、-OCH 2 -, -CH = CH-or-C ≡ C-substituted and having heteroatoms not directly bonded, said R being 1 The R is 2 One or more of H in (a) may be substituted by F, cl, br, I;
each one of which is
Each one of which is
And each one of
Each independently of the other is
And said
The above-mentioned
The above-mentioned
The above-mentioned
And said
At least one of which is
Each of said
Each of said
The above-mentioned
The described
And each of said
One or more of H in (a) may be substituted by F, cl, br;
the formula II is specifically as follows:
wherein R is 3 And R 4 Independently of one another, H, F, cl, br, I, CN, SCN, NCS, SF 5 Or an alkyl or alkoxy group having 1 to 15 carbon atoms, or an alkenyl, alkenyloxy, alkynyl or alkynyloxy group having 2 to 15 carbon atoms; the R is 3 The terminal group of (A), the R 4 Can be H, CN or CF 3 Monosubstitution, said R 3 And said R 4 In one or more CH 2 The radicals being optionally substituted by-O-, -C (O) O-; -OC (O) -, -CF 2 O-、-OCF 2 -、-CH 2 CH 2 -、-CF 2 CF 2 -、-CH 2 O、-OCH 2 -, -CH = CH-or-C ≡ C-substitution and is such that the heteroatoms are not directly bonded, said R 1 The R is 2 One or more of H in (a) may be substituted by F, cl, br, I.
Alternatively, in some embodiments of the invention, the compound represented by formula I is selected from one or more of the following compounds represented by the subformulae I-1 to I-8; the sub-formulae I-1 to I-8 are in particular:
wherein n is 0,1,2,3,4 or 5;
L 1 、L 2 、L 3 、L 4 、L 5 、L 6 、L 7 and L 8 Each independently of the other is H or F.
Alternatively, in some embodiments of the invention, the compound represented by formula I is selected from one or more of the following compounds represented by sub-formulae I-a to I-r, in particular sub-formulae I-1 a to I-1I:
alternatively, in some embodiments of the invention, the compound represented by formula II is selected from one or more of the following compounds represented by sub-formulae II-1 to II-12, and in particular sub-formulae II-1 to II-12:
optionally, in some embodiments of the present invention, the liquid crystal composition further comprises one or more compounds represented by formula iii, specifically:
wherein p is 0,1 or 2;
Z 5 and Z 6 Independently of one another, is a single bond, -O-,; -C (O) O-, -OC (O) -, -CF 2 O-、-OCF 2 -、-CH 2 CH 2 -、-CF 2 CF 2 -、-CH 2 O、-OCH 2 -, -CH = CH-or-C ≡ C-; z is 5 And said Z 6 One or more of H in (a) may be substituted by F, cl, br, I;
R 5 and R 6 Independently of one another, H, F, cl, br, I, CN, SCN, NCS, SF 5 Or an alkyl or alkoxy group having 1 to 15 carbon atoms, or an alkenyl, alkenyloxy, alkynyl or alkynyloxy group having 2 to 15 carbon atoms; the R is 5 The terminal group of (1), the R 6 Can be H, CN or CF 3 Monosubstitution, said R 5 And said R 6 In one or more CH 2 The radicals being optionally substituted by-O-, -C (O) O-, -OC (O) -, -CF 2 O-、-OCF 2 -、-CH 2 CH 2 -、-CF 2 CF 2 -、-CH 2 O-、-OCH 2 -, -CH = CH-or-C ≡ C-substituted and having heteroatoms not directly bonded, said R being 5 The R is 6 One or more of H in (a) may be substituted by F, cl, br, I;
Alternatively, in some embodiments of the invention, the compound represented by formula iii is selected from one or more of the following compounds represented by subformulae iii-1 to iii-5, specifically subformulae iii-1 to iii-5:
optionally, in some embodiments of the present invention, the liquid crystal composition further comprises one or more compounds represented by formula iv, specifically:
wherein q is 0,1 or 2;
L 1 and L 2 Each independently of the others, is H, F, cl, br, CN, or an alkyl group having 1 to 5 carbon atoms, or an alkenyl or alkynyl group having 2 to 5 carbon atoms;
Z 7 and each Z 8 Independently of one another, is a single bond, -O-,; -C (O) O-, -OC (O) -, -CF 2 O-、-OCF 2 -、-CH 2 CH 2 -、-CF 2 CF 2 -、-CH 2 O、-OCH 2 -, -CH = CH-or-C ≡ C-; z is 7 And each of said Z 8 One or more of H in (a) may be substituted by F, cl, br, I;
R 7 and R 8 Independently of one another, H, F, cl, br, I, CN, SCN, NCS, SF 5 Or an alkyl or alkoxy group having 1 to 15 carbon atoms, or an alkenyl, alkenyloxy, alkynyl or alkynyloxy group having 2 to 15 carbon atoms; the R is 7 The terminal group of (1), the R 8 May be H, CN or CF 3 Monosubstitution, said R 7 And said R 8 In one or more CH 2 The radicals being optionally substituted by-O-, -C (O) O-, -OC (O) -, -CF 2 O-、-OCF 2 -、-CH 2 CH 2 -、-CF 2 CF 2 -、-CH 2 O、-OCH 2 -, -CH = CH-or-C ≡ C-substituted and having heteroatoms not directly bonded, said R being 7 The R is 8 One or more of H in (a) may be substituted by F, cl, br, I;
Alternatively, in some embodiments of the invention, the compound represented by formula IV is selected from one or more of the following compounds represented by sub-formulae IV-1 to IV-8, with sub-formulae IV-1 to IV-8 being specific:
alternatively, in some embodiments of the invention, the liquid crystal composition comprises
The above-mentioned
The above-mentioned
The described
The above-mentioned
The described
The described
The above-mentioned
The above-mentioned
The above-mentioned
The described
The above-mentioned
Respectively accounting for 18%, 11%, 5%, 12%, 8%, 6%, 7%, 13%; alternatively, the first and second electrodes may be,
the liquid crystal composition comprises
The described
The described
The above-mentioned
The above-mentioned
The above-mentioned
The described
The above-mentioned
The described
The described
The described
The described
35%, 5%, 10%, 8%, 4%, 10%, 6%, 8%, 2%; alternatively, the first and second electrodes may be,
the liquid crystal composition comprises
The above-mentioned
The above-mentioned
The above-mentioned
The described
The described
The described
The described
The described
The above-mentioned
The above-mentioned
The above-mentioned
The above-mentioned
The described
The described
The weight percentages of the components are respectively 10 percent, 5 percent and 9 percent 9%, 8%, 5%, 8%, 6%; alternatively, the first and second liquid crystal display panels may be,
the liquid crystal composition comprises
The described
The described
The above-mentioned
The described
The above-mentioned
The above-mentioned
The above-mentioned
The above-mentioned
The described
The above-mentioned
The mass percentages of the components are respectively 35%, 10%, 5%, 6%, 8%, 10%, 6% and 6%; alternatively, the first and second liquid crystal display panels may be,
the liquid crystal composition comprises
The above-mentioned
The described
The above-mentioned
The above-mentioned
The above-mentioned
The above-mentioned
The described
The above-mentioned
The above-mentioned
The above-mentioned
The above-mentioned
The above-mentioned
The described
The weight percentages of the components are respectively 35%, 3%, 5%, 3%, 8%, 9%, 8%, 6%, 4%, 6%, 5% and 3%; alternatively, the first and second liquid crystal display panels may be,
the liquid crystal composition comprises
The above-mentioned
The above-mentioned
The described
The described
The above-mentioned
The described
The above-mentioned
The above-mentioned
The above-mentioned
The above-mentioned
The mass percentages of the components are respectively 30%, 8%, 13%, 5%, 8%, 6%, 10% and 4%.
Correspondingly, the invention also provides a liquid crystal display panel, which comprises a first substrate, a second substrate and a liquid crystal layer, wherein the first substrate and the second substrate are oppositely arranged, the liquid crystal layer is arranged between the first substrate and the second substrate, and the liquid crystal layer comprises the liquid crystal composition disclosed by any embodiment of the invention.
The invention provides a liquid crystal composition and a liquid crystal display panel, wherein the liquid crystal composition comprises one or more than one
A compound represented by the formula (I), and one or more
A compound represented by the formula (I), and
the fluorophenyl group in (1) has greater dielectric negativity, and the compound has a structure
Has a low viscosity, the
And the above
The interaction makes the liquid crystal composition have the advantages of larger polarity, lower viscosity, quicker corresponding time and the like, and is favorable for the liquid crystal composition to adapt to a liquid crystal display device so as to improve various performances of the liquid crystal display device.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a liquid crystal display panel according to an embodiment of the invention.
Detailed Description
While the embodiments and/or examples of the present invention will be described in detail and fully with reference to the specific embodiments thereof, it should be understood that the embodiments and/or examples described below are only a part of the embodiments and/or examples of the present invention and are not intended to limit the scope of the invention. All other embodiments and/or examples, which can be obtained by a person skilled in the art without inventive step, are within the scope of protection of the present invention.
The directional terms used in the present invention, such as [ upper ], [ lower ], [ left ], [ right ], [ front ], [ rear ], [ inner ], [ outer ], [ side ], etc., refer only to the directions of the attached drawings. Accordingly, the directional terminology is used for purposes of illustration and understanding and is in no way limiting. The terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature.
The embodiment of the invention provides a liquid crystal composition and a liquid crystal display panel comprising the same, which are used for improving the performances of the liquid crystal display panel such as contrast, response time and the like.
In one embodiment, the liquid crystal composition comprises one or more compounds represented by formula I and one or more compounds represented by formula II.
The formula I is specifically as follows:
wherein m, n and o are each independently of the other 0,1 or 2, and m + n + o.ltoreq.4; preferably, m, n and o are independently of one another 0 or 1, and m + n + o.ltoreq.3; particularly preferably, m + n + o.ltoreq.2.
Each of Z 1 Each of Z 2 、Z 3 And each Z 4 Independently of one another, a single bond, -O-, -C (O))O-、-OC(O)-、-CF 2 O-、-OCF 2 -、-CH 2 CH 2 -、-CF 2 CF 2 -、-CH 2 O、-OCH 2 -, -CH = CH-or-C.ident.C-, or alkyl ethers having 1 to 7 carbon atoms, or alkenyl, alkynyl or alkynyl ethers having 2 to 7 carbon atoms; preferably, each Z 1 Each Z 2 、Z 3 And each Z 4 Independently of one another, is a single bond, -O-) -C (O) O-, -OC (O) -, -CF 2 O-、-OCF 2 -、-CH 2 CH 2 -、-CH 2 O-or-OCH 2 Or an alkyl or alkyl ether having 1 to 7 carbon atoms; particularly preferably, each Z 1 Each Z 2 、Z 3 And each Z 4 Independently of one another, a single bond, or an alkyl or alkyl ether having 1 to 5 carbon atoms. Each Z 1 Each Z 2 、Z 3 And each Z 4 One or more of H in (b) may be substituted by F, cl, br, I.
R 1 And R 2 Independently of one another, H, F, cl, br, I, CN, SCN, NCS, SF 5 Or an alkyl or alkoxy group having 1 to 15 carbon atoms, or an alkenyl, alkenyloxy, alkynyl or alkynyloxy group having 1 to 15 carbon atoms; preferably, said R is 1 And said R 2 Independently of one another, H, F, cl, br, or an alkyl or alkoxy group having 1 to 7 carbon atoms, or an alkenyl, alkenyloxy, alkynyl or alkynyloxy group having 1 to 7 carbon atoms; particularly preferably, R is 1 And said R 2 Independently of one another, is an alkyl or alkoxy group having 1 to 5 carbon atoms, or an alkenyl, alkenyloxy, alkynyl or alkynyloxy group having 2 to 5 carbon atoms. The R is 1 The terminal group of (1), the R 2 May be H, CN or CF 3 Monosubstitution, said R 1 And said R 2 In one or more CH 2 The radicals being optionally substituted by-O-, -C (O) O-, -OC (O) -, -CF 2 O-、-OCF 2 -、-CH 2 CH 2 -、-CF 2 CF 2 -、-CH 2 O、-OCH 2 -, -CH = CH-or-C ≡ C-substituted and having heteroatoms not directly bonded, said R being 1 The R is 2 One or more of H in (a) may be substituted by F, cl, br, I.
Each one of which is
Each one of which is
And each one of
Each independently of the other is
And the above mentioned
The above-mentioned
The above-mentioned
The above-mentioned
And the above
At least one of which is
Preferably, each of said
Each of said
The above-mentioned
The described
And each of said
Independently of one another are
Particularly preferably, each of said
Each of said
The described
The described
And each of said
Independently of one another are
Each of said
Each of said
The described
The above-mentioned
And each of said
One or more of H in (b) may be substituted by F, cl, br.
The formula II is specifically as follows:
wherein R is 3 And R 4 Independently of one another, H, F, cl, br, I, CN, SCN, NCS, SF 5 Or an alkyl or alkoxy group having 1 to 15 carbon atoms, or an alkenyl, alkenyloxy, alkynyl or alkynyloxy group having 2 to 15 carbon atoms; preferably, said R is 3 And said R 4 Independently of one another, H, F, cl, br, or an alkyl or alkoxy group having 1 to 7 carbon atoms, or an alkenyl, alkenyloxy, alkynyl or alkynyloxy group having 2 to 7 carbon atoms; particularly preferably, R is 3 And said R 4 Independently of one another, is an alkyl or alkoxy radical having 1 to 5 carbon atoms, or an alkenyl, alkenyloxy, alkynyl or alkynyloxy radical having 2 to 5 carbon atoms. The R is 3 The terminal group of (A), the R 4 May be H, CN or CF 3 Monosubstitution, said R 3 And said R 4 In one or more CH 2 The radicals being optionally substituted by-O-, -C (O) O-, -OC (O) -, -CF 2 O-、-OCF 2 -、-CH 2 CH 2 -、-CF 2 CF 2 -、-CH 2 O、-OCH 2 -, -CH = CH-or-C ≡ C-substitution and is such that the heteroatoms are not directly bonded, said R 1 The R is 2 One or more of H in (a) may be substituted by F, cl, br, I.
When said R is 1 The R is 2 The R is 3 And said R 4 When independently of one another, an alkyl group or an alkoxy group, the alkyl group or the alkoxy group may be straightA chain group, which may be branched, preferably a linear group; the linear group is a linear aliphatic hydrocarbon group and the branched group is a branched aliphatic hydrocarbon group. Preferably, said R is 1 The R is 2 R said 3 And said R 4 Independently of one another, methyl, ethyl, propyl, butyl, pentyl or hexyl.
When said R is 1 The R is 2 The R is 3 And said R 4 When independently an alkenyl group or an alkynyl group, the alkenyl group or the alkynyl group may be a straight chain group or a branched chain group, and the alkenyl group or the alkynyl group has at least one carbon-carbon double bond or carbon-carbon triple bond; preferably said R 1 The R is 2 The R is 3 And said R 4 Independently of one another, alkenyl or alkynyl having 2 to 7 carbon atoms, particularly preferably R 1 The R is 2 R said 3 And said R 4 Independently of one another, vinyl, prop-1-enyl, prop-2-enyl, but-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-ynyl, pent-4-ynyl, hex-1-ynyl, hex-2-ynyl, hex-3-ynyl, hex-4-ynyl, hex-5-ynyl, hept-1-heptynyl, hept-2-ynyl, hex-3-4-ynyl, hex-4-heptynyl, hex-1-2-heptynyl, hex-5-heptynyl, hept-6-heptynyl and E-isomers. Of alkenyl and alkynyl groups, preferred is 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.
In one embodiment, the compound represented by formula I is selected from one or more of the following compounds represented by the sub-formulae I-1 to I-8; preferably, the compound represented by the formula I is selected from one or more of the compounds represented by the sub-formulae I-1, I-4 to I-8; particularly preferably, the compound represented by the formula I is selected from one or more of the compounds represented by the subformulae I-6 and I-7; the formulae I-1 to I-8 are in particular:
wherein n is 0,1,2,3,4 or 5; preferably, n is 0,1,2,3 or 4; particularly preferably, n is 1,2 or 3;
L 1 、L 2 、L 3 、L 4 、L 5 、L 6 、L 7 and L 8 Each independently of the other is H or F;
R 1 、R 2 each independently of the others, H, F, CN, or an alkyl or alkoxy group having 1 to 7 carbon atoms, or an alkenyl, alkenyloxy group having 2 to 7 carbon atoms; said R is 7 The terminal group of (1), the R 8 May be H, CN or CF 3 Monosubstitution, said R 1 And said R 2 In one or more CH 2 The radicals being optionally substituted by-O-, -C (O) O-; -OC (O) -, -CF 2 O-、-OCF 2 -、-CH 2 CH 2 -、-CF 2 CF 2 -、-CH 2 O、-OCH 2 -, -CH = CH-or-C ≡ C-substituted and having heteroatoms not directly bonded, said R being 1 The R is 2 One or more of H in (b) may be substituted by F, cl, br, I. R 1 Methyl, methoxy, ethyl, ethoxy, propyl, propoxy, butyl, butoxy, pentyl, pentyloxy are preferred, and methyl, ethyl, propyl, butyl, and pentyl are particularly preferred. R 2 Methyl, methoxy, ethyl, ethoxy, propyl, propoxy, butyl, butoxy, pentyl, pentyloxy, and particularly methoxy, ethoxy, propoxy, butoxy, and pentyloxy are preferable.
Preferably, the compound represented by the formula I is selected from one or more of the following compounds represented by the sub-formulae I-a to I-r; preferably, the compound represented by the formula I is selected from one or more of the compounds represented by the sub-formulae I-d to I-i and I-m to I-r; particularly preferably, the compound represented by the formula I is selected from one or more compounds represented by sub-formulae I-m to I-r; the sub-formulae I-a to I-r are in particular:
in one embodiment, the compound represented by formula II is selected from one or more of the following compounds represented by the sub-formulae II-1 to II-12; preferably, the compound represented by the formula II is selected from one or more compounds represented by the sub-formulae of the formulae II-1, II-2, II-10, II-11 and II-12; the sub-formulae II-1 to II-12 are specifically:
in one embodiment, the liquid crystal composition further comprises one or more of the compounds represented by formula iii, in particular:
wherein p is 0,1 or 2; preferably, p is 0 or 1.
Z 5 And Z 6 Independently of one another, is a single bond, -O-,; -C (O) O-, -OC (O) -, -CF 2 O-、-OCF 2 -、-CH 2 CH 2 -、-CF 2 CF 2 -、-CH 2 O、-OCH 2 -, -CH = CH-or-C ≡ C-; preferably, Z is 5 And said Z 6 Independently of one another, is a single bond, -O-) -C (O) O-, -OC (O) -, -CF 2 O-、-OCF 2 -、-CH 2 CH 2 -、-CH 2 O-or-OCH 2 -; particularly preferably, Z is 5 And said Z 6 Independently of one another, a single bond or-CH 2 O-is formed. Z is 5 And said Z 6 One or more of H in (b) may be substituted by F, cl, br, I.
R 5 And R 6 Independently of one another, H, F, cl, br, I, CN, SCN, NCS, SF 5 Or an alkyl or alkoxy group having 1 to 15 carbon atoms, or an alkenyl, alkenyloxy, alkynyl or alkynyloxy group having 2 to 15 carbon atoms; preferably, said R is 5 And said R 6 Independently of one another, H, F, cl, br, or an alkyl or alkoxy group having 1 to 7 carbon atoms, or an alkenyl, alkenyloxy, alkynyl or alkynyloxy group having 2 to 7 carbon atoms; particularly preferably, R is 5 And said R 6 Independently of one another, is an alkyl or alkoxy group having 1 to 5 carbon atoms, or an alkenyl, alkenyloxy, alkynyl or alkynyloxy group having 2 to 5 carbon atoms. Said R is 5 The terminal group of (1), the R 6 May be H, CN or CF 3 Monosubstitution, said R 5 And said R 6 In one or more CH 2 The radicals being optionally substituted by-O-, -C (O) O-, -OC (O) -, -CF 2 O-、-OCF 2 -、-CH 2 CH 2 -、-CF 2 CF 2 -、-CH 2 O-、-OCH 2 -, -CH = CH-or-C ≡ C-substitution and is such that the heteroatoms are not directly bonded, said R 5 R said 6 One or more of H in (a) may be substituted by F, cl, br, I.
In one embodiment, the compound represented by formula III is selected from one or more of the following compounds represented by sub-formulae III-1 to III-5; the sub-formulae III-1 to III-5 are specifically:
wherein R is 5 Preferred are methyl, methoxy, ethyl, ethoxy, propyl, propoxy, butyl, butoxy, pentyl, pentyloxy, ethenyl, 1-propenyl, 2-propenyl, 1-butenyl, 2-butenyl, 3-butenyl, 1-pentenyl, 2-pentenyl, 3-pentenyl, 4-pentenyl, and particularly preferred are methyl, ethyl, propyl, butyl and pentyl. R 2 Preferably methyl, methoxy, ethyl, ethoxy, propyl, propoxy, butyl, butoxy, pentyl, pentyloxy, ethenyl, 1-propenyl, 2-propenyl, 1-butenyl, 2-butenyl, 3-butenyl, 1-pentenyl, 2-pentenyl, 3-pentenyl, 4-pentenyl, particularly preferably methyl, ethyl, propyl, butyl, pentyl, ethenyl, 1-propenyl, 2-propenyl, 1-butenyl, 2-butenyl, 3-butenyl, 1-pentenyl, 2-pentenyl, 3-pentenyl, 4-pentenyl.
Preferably, the compound represented by the formula III is selected from one or more of the following compounds represented by the sub-formulae III-1 a to III-5 e; the sub-formulae III-1 a to III-5 e are in particular:
in one embodiment, the liquid crystal composition further comprises one or more compounds represented by formula iv, in particular:
wherein q is 0,1 or 2; preferably, q is 0 or 1.
L 1 And L 2 Each independently of the others, being H, F, cl, br, CN, or an alkyl group having 1 to 5 carbon atoms, or an alkenyl or alkynyl group having 2 to 5 carbon atoms; preferably, said L 1 And said L 2 Are all F.
Z 7 And each Z 8 Independently of one another, is a single bond, -O-,; -C (O) O-, -OC (O) -, -CF 2 O-、-OCF 2 -、-CH 2 CH 2 -、-CF 2 CF 2 -、-CH 2 O、-OCH 2 -, -CH = CH-or-C ≡ C-; preferably, Z is 7 And each of said Z 8 Independently of one another, is a single bond, -O-) -C (O) O-, -OC (O) -, -CF 2 O-、-OCF 2 -、-CH 2 CH 2 -、-CH 2 O-or-OCH 2 -; particularly preferably, Z is 7 And each of said Z 8 Independently of one another, a single bond or-CH 2 O-is formed. Z is 7 And each of said Z 8 One or more of H in (b) may be substituted by F, cl, br, I.
R 7 And R 8 Independently of one another, H, F, cl, br, I, CN, SCN, NCS, SF 5 Or an alkyl or alkoxy group having 1 to 15 carbon atoms, or an alkenyl, alkenyloxy, alkynyl or alkynyloxy group having 2 to 15 carbon atoms; preferably, said R is 7 And said R 8 Independently of one another, H, F, cl, br, or an alkyl or alkoxy group having 1 to 7 carbon atoms, or an alkenyl, alkenyloxy, alkynyl or alkynyloxy group having 2 to 7 carbon atoms; particularly preferably, R is 7 And said R 8 Independently of one another, is an alkyl or alkoxy group having 1 to 5 carbon atoms, or an alkenyl, alkenyloxy, alkynyl or alkynyloxy group having 2 to 5 carbon atoms. The R is 7 The terminal group of (A), the R 8 May be H, CN or CF 3 Monosubstitution, said R 7 And said R 8 In one or more CH 2 The radicals being optionally substituted by-O-, -C (O) O-, -OC (O) -, -CF 2 O-、-OCF 2 -、-CH 2 CH 2 -、-CF 2 CF 2 -、-CH 2 O、-OCH 2 -, -CH = CH-or-C ≡ C-substituted and having heteroatoms not directly bonded, said R being 7 The R is 8 One or more of H in (b) may be substituted by F, cl, br, I.
In one embodiment, the compound represented by formula IV is selected from one or more of the following compounds represented by the sub-formulae IV-1 to IV-8; the sub-formulae IV-1 to IV-8 are specifically:
wherein R is 7 Methyl, methoxy, ethyl, ethoxy, propyl, propoxy, butyl, butoxy, pentyl, pentyloxy are preferred, and methyl, ethyl, propyl, butyl, and pentyl are particularly preferred. R is 8 Methyl, methoxy, ethyl, ethoxy, propyl, propoxy, butyl, butoxy, pentyl, pentyloxy, and particularly methoxy, ethoxy, propoxy, butoxy, pentyloxy, are preferable.
Preferably, the compound represented by the formula IV is selected from one or more of the following compounds represented by the sub-formulae IV-1 a to IV-8 g; the sub-formulas IV-1 a to IV-8 g are specifically as follows:
in one embodiment, the weight percentages of the compound represented by formula i, the compound represented by formula ii, the compound represented by formula iii, and the compound represented by formula iv are 1% to 50%, 1% to 95%, 0% to 90%, and 0% to 90%, respectively. Preferably, the weight percentages of the compound represented by the formula I, the compound represented by the formula II, the compound represented by the formula III and the compound represented by the formula IV are 1% -40%, 5% -70% and 5% -70%, respectively. More preferably, the weight percentages of the compound represented by the formula I, the compound represented by the formula II, the compound represented by the formula III and the compound represented by the formula IV are 1% -20%, 10% -50% and 10% -50%, respectively.
Hereinafter, the liquid crystal composition provided by the present invention will be explained in detail by specific examples.
Example one
TABLE 1
Referring to table 1, table 1 shows the mixture ratio of the compounds of each component of the liquid crystal composition provided in this example, and the performance parameters of the liquid crystal composition. The liquid crystal composition comprises
The described
The above-mentioned
The described
The above-mentioned
The described
The above-mentioned
The described
The above-mentioned
The described
The above-mentioned
The above-mentioned
The weight percentages of (A) and (B) are respectively 18%, 11%, 5%, 12%, 8%, 6%, 7% and 13%.
Response time of liquid crystal
Wherein gamma 1 is the rotational viscosity of the liquid crystal material, d is the thickness of the liquid crystal box, delta epsilon is the dielectric anisotropy of the liquid crystal, and V th For the threshold voltage, K11 is the splay elastic coefficient, K22 is the twist elastic coefficient, and K33 is the bend elastic coefficient. From the above formula, the response time of the liquid crystal is positively correlated with the rotational viscosity γ 1, and negatively correlated with the dielectric anisotropy Δ ∈ and the splay elastic coefficient K11 and the bend elastic coefficient K33. The liquid crystal composition provided in this example had a rotational viscosity γ 1 of 98 mPas, a dielectric anisotropy Δ ε of-3.6, a splay elastic coefficient K11 of 15.2, and a bend elastic coefficient K33 of 16.1. The liquid crystal composition provided by the application has a large negative dielectric constant delta epsilon, a small rotational viscosity gamma 1, a large splay elastic coefficient K11 and a large bending elastic coefficient K33, so that the liquid crystal composition has a fast response time and is beneficial to improving the response speed of a liquid crystal display panel.
The contrast of liquid crystals is related to the dielectric anisotropy of liquid crystals, and a negative dielectric anisotropy contributes to the improvement of the contrast of liquid crystals. The compound represented by the formula I has larger negative polarity, and the liquid crystal composition has larger negative dielectric constant delta epsilon by adding the compound represented by the formula I into the liquid crystal composition, thereby being beneficial to improving the contrast of a liquid crystal display panel.
In addition, the liquid crystal composition provided by the embodiment has a higher clearing point Tni (100 ℃), so that the liquid crystal composition has a wider working temperature range and a higher maximum working temperature. The liquid crystal composition has a large negative dielectric constant Deltaepsilon (-3.6) at a temperature of 25 ℃ and a low driving voltage.
In the liquid crystal composition provided in this embodiment, the compound represented by formula i has a larger dielectric negativity and a lower rotational viscosity, and the addition of the compound helps to shorten the response time of the liquid crystal and improve the contrast of the liquid crystal composition; the compound represented by the formula II has the characteristics of dielectric neutrality and low viscosity, and the addition of the compound also helps to shorten the response time of liquid crystal; the compound represented by the formula III has dielectric negativity, high Tni characteristics and the like; the compounds represented by the formulas I, II and III in the liquid crystal composition can be properly adjusted according to actual needs so as to adjust various properties of the liquid crystal composition.
In summary, the liquid crystal composition provided by the embodiment has a larger dielectric negativity, a smaller rotational viscosity, a larger splay elastic coefficient, a larger bending elastic coefficient, a larger vertical dielectric constant and a higher clearing point, which is beneficial to improving the response speed and the contrast of the liquid crystal display panel, and simultaneously reducing the driving voltage of the liquid crystal display panel, expanding the working temperature range of the liquid crystal display panel and improving the highest working temperature of the liquid crystal display panel.
The preparation method of the liquid crystal composition comprises the following steps:
step B1, weighing the predetermined weight of the mixture according to the weight percentages of 18%, 11%, 5%, 12%, 8%, 6%, 7% and 13%
The described
The described
The above-mentioned
The above-mentioned
The described
The described
The described
The described
The described
The described
B2, sequentially adding the compounds into a melting container according to the sequence of melting points from low to high, heating and stirring at the temperature of 60-100 ℃ to fully dissolve and mix the liquid crystal composition;
and B3, cooling the liquid crystal composition to room temperature.
Example two
TABLE 2
Referring to table 2, table 2 shows the mixture ratio of the compounds of each component of the liquid crystal composition provided in this embodiment, and the performance parameters of the liquid crystal composition. The liquid crystal composition comprises
The above-mentioned
The described
The described
The described
The above-mentioned
The above-mentioned
The above-mentioned
The described
The above-mentioned
The described
The described
Respectively 35%, 5%, 10%, 8%, 4%, 10%, 6%, 8%, 2%.
Similarly, the liquid crystal composition provided by the embodiment has a larger dielectric negativity, a smaller rotational viscosity, a larger splay elastic coefficient, a larger bending elastic coefficient, a larger vertical dielectric constant and a higher clearing point, and is beneficial to improving the response speed and the contrast of the liquid crystal display panel, reducing the driving voltage of the liquid crystal display panel, expanding the working temperature range of the liquid crystal display panel and improving the highest working temperature of the liquid crystal display panel.
EXAMPLE III
TABLE 3
Referring to table 3, table 3 shows the mixture ratio of the compounds of each component of the liquid crystal composition provided in this embodiment, and the performance parameters of the liquid crystal composition. The liquid crystal composition comprises
Similarly, the liquid crystal composition provided by the embodiment has a larger dielectric negativity, a smaller rotational viscosity, a larger splay elastic coefficient, a larger bending elastic coefficient, a larger vertical dielectric constant and a higher clearing point, so that the response speed and the contrast of the liquid crystal display panel are favorably improved, the driving voltage of the liquid crystal display panel is reduced, the working temperature range of the liquid crystal display panel is expanded, and the highest working temperature of the liquid crystal display panel is improved.
Example four
TABLE 4
Referring to table 4, table 4 shows the mixture ratio of the compounds of each component of the liquid crystal composition provided in this example, and the performance parameters of the liquid crystal composition. The liquid crystal composition comprises
The described
The above-mentioned
The above-mentioned
The above-mentioned
The above-mentioned
The described
The above-mentioned
The described
The above-mentioned
The above-mentioned
The mass percentages of the components are respectively 35%, 10%, 5%, 6%, 8%, 10%, 6% and 6%.
Similarly, the liquid crystal composition provided by the embodiment has a larger dielectric negativity, a smaller rotational viscosity, a larger splay elastic coefficient, a larger bending elastic coefficient, a larger vertical dielectric constant and a higher clearing point, and is beneficial to improving the response speed and the contrast of the liquid crystal display panel, reducing the driving voltage of the liquid crystal display panel, expanding the working temperature range of the liquid crystal display panel and improving the highest working temperature of the liquid crystal display panel.
EXAMPLE five
TABLE 5
Referring to table 5, table 5 shows the mixture ratio of the compounds of each component of the liquid crystal composition provided in this example, and the performance parameters of the liquid crystal composition. The liquid crystal composition comprises
The described
The described
The above-mentioned
The above-mentioned
The described
The above-mentioned
The above-mentioned
The described
The described
The above-mentioned
The described
The described
The above-mentioned
Respectively 35%, 3%, 5%, 3%, 8%, 9%, 8%, 6%, 4%, 6%, 5%, 3%.
Similarly, the liquid crystal composition provided by the embodiment has a larger dielectric negativity, a smaller rotational viscosity, a larger splay elastic coefficient, a larger bending elastic coefficient, a larger vertical dielectric constant and a higher clearing point, so that the response speed and the contrast of the liquid crystal display panel are favorably improved, the driving voltage of the liquid crystal display panel is reduced, the working temperature range of the liquid crystal display panel is expanded, and the highest working temperature of the liquid crystal display panel is improved.
Example six
TABLE 6
Referring to table 6, table 6 shows the mixture ratio of the compounds of each component of the liquid crystal composition provided in this example, and the performance parameters of the liquid crystal composition. The liquid crystal composition comprises
The described
The described
The described
The above-mentioned
The above-mentioned
The described
The above-mentioned
The above-mentioned
The described
The described
The mass percentages of (A) and (B) are respectively 30%, 8%, 13%, 5%, 8%, 6%, 10% and 4%.
Similarly, the liquid crystal composition provided by the embodiment has a larger dielectric negativity, a smaller rotational viscosity, a larger splay elastic coefficient, a larger bending elastic coefficient, a larger vertical dielectric constant and a higher clearing point, so that the response speed and the contrast of the liquid crystal display panel are favorably improved, the driving voltage of the liquid crystal display panel is reduced, the working temperature range of the liquid crystal display panel is expanded, and the highest working temperature of the liquid crystal display panel is improved.
Referring to fig. 1, the present invention further provides a liquid crystal display panel, where the liquid crystal display panel includes a first substrate 11, a second substrate 12, and a liquid crystal layer 13, the first substrate 11 and the second substrate 12 are disposed opposite to each other, the liquid crystal layer 13 is disposed between the first substrate 11 and the second substrate 12, and the liquid crystal layer 13 includes the liquid crystal composition according to any one of the embodiments of the present invention. Since the liquid crystal display panel includes the liquid crystal composition according to any one of the embodiments of the present invention, the liquid crystal display panel has the technical features and the advantages of the liquid crystal composition according to any one of the embodiments of the present invention. The Liquid Crystal display panel provided In the embodiment of the present invention may be any one of a Vertical Alignment (VA) Liquid Crystal display panel, a Birefringence Controlled (ECB) Liquid Crystal display panel, a Plasma Addressed Liquid Crystal display Panel (PALC), a Fringe Field Switching (FFS) Liquid Crystal display panel, an In-Plane Switching (IPS) Liquid Crystal display panel, and the like.
In summary, embodiments of the present invention provide a liquid crystal composition and a liquid crystal display panel, where the liquid crystal composition includes one or more kinds of liquid crystal materials
A compound represented by (I), and one or more
A compound represented by the formula
The fluorophenyl group in (1) has greater dielectric negativity, and the compound has a structure
Has a low viscosity, the
And said
The interaction makes the liquid crystal composition have the advantages of larger polarity, lower viscosity, quicker corresponding time and the like, is favorable for the liquid crystal composition to be adapted to a liquid crystal display device so as to improve the liquid crystal display deviceVarious properties of the device.
The liquid crystal composition and the liquid crystal display panel provided by the embodiments of the present invention are described in detail above, and the principles and embodiments of the present invention are explained herein by applying specific examples, and the above description of the embodiments is only used to help understanding the method and the core concept of the present invention; meanwhile, for those skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed, and in summary, the content of the present specification should not be construed as limiting the present invention.
Claims (10)
1. A liquid crystal composition comprising one or more compounds represented by formula i and one or more compounds represented by formula ii;
the formula I is specifically as follows:
wherein m, n and o are each independently of the other 0,1 or 2, and m + n + o.ltoreq.4;
each Z 1 Each Z 2 、Z 3 And each Z 4 Independently of one another, is a single bond, -O-,; -C (O) O-, -OC (O) -, -CF 2 O-、-OCF 2 -、-CH 2 CH 2 -、-CF 2 CF 2 -、-CH 2 O、-OCH 2 -, -CH = CH-or-C ≡ C-, or an alkyl or alkyl ether having 1 to 7 carbon atoms, or an alkenyl, alkenyl ether, alkynyl or alkynyl ether having 2 to 7 carbon atoms; each of Z 1 Each Z 2 、Z 3 And each Z 4 One or more of H in (a) may be substituted by F, cl, br, I;
R 1 and R 2 Independently of one another, H, F, cl, br, I, CN, SCN, NCS, SF 5 Or an alkyl or alkoxy group having 1 to 15 carbon atoms, or an alkenyl, alkenyloxy, alkynyl or alkynyloxy group having 1 to 15 carbon atoms; the R is 1 The terminal group of (A), the R 2 Can be H, CN or CF 3 Monosubstitution, said R 1 And said R 2 In one or more CH 2 The radicals being optionally substituted by-O-, -C (O) O-, -OC (O) -, -CF 2 O-、-OCF 2 -、-CH 2 CH 2 -、-CF 2 CF 2 -、-CH 2 O、-OCH 2 -, -CH = CH-or-C ≡ C-substitution and is such that the heteroatoms are not directly bonded, said R 1 The R is 2 One or more of H in (a) may be substituted by F, cl, br, I;
each one of which is
Each one of which is
And each one of
Each independently of the other is
And the above mentioned
The above-mentioned
The above-mentioned
The above-mentioned
And said
At least one of which is
Each of said
Each of said
The described
The described
And each of said
One or more of H in (a) may be substituted by F, cl, br;
the formula II is specifically as follows:
wherein R is 3 And R 4 Independently of one another, H, F, cl, br, I, CN, SCN, NCS, SF 5 Or an alkyl or alkoxy group having 1 to 15 carbon atoms, or an alkenyl, alkenyloxy, alkynyl or alkynyloxy group having 2 to 15 carbon atoms; the R is 3 The terminal group of (1), the R 4 Can be H, CN or CF 3 Monosubstitution, said R 3 And said R 4 In one or more CH 2 The radicals being optionally substituted by-O-, -C (O) O-; -OC (O) -, -CF 2 O-、-OCF 2 -、-CH 2 CH 2 -、-CF 2 CF 2 -、-CH 2 O、-OCH 2 -, -CH = CH-or-C ≡ C-substituted and having heteroatoms not directly bonded, said R being 1 The R is 2 One or more of H in (a) may be substituted by F, cl, br, I.
2. The liquid crystal composition as claimed in claim 1, wherein the compound represented by formula I is selected from one or more compounds represented by the following sub-formulae I-1 to I-8; the sub-formulae I-1 to I-8 are in particular:
wherein n is 0,1,2,3,4 or 5;
L 1 、L 2 、L 3 、L 4 、L 5 、L 6 、L 7 and L 8 Each independently of the other is H or F.
3. The liquid-crystal composition as claimed in claim 2, wherein the compound represented by formula I is selected from one or more of the following compounds represented by the sub-formulae I-a to I-r, in particular of the sub-formulae I-1 a to I-1I:
4. the liquid crystal composition as claimed in claim 1, wherein the compound represented by the formula ii is selected from one or more of the following compounds represented by sub-formulae ii-1 to ii-12, and the sub-formulae ii-1 to ii-12 are specifically:
5. the liquid crystal composition of claim 1, further comprising one or more compounds represented by formula iii, in particular:
wherein p is 0,1 or 2;
Z 5 and Z 6 Independently of one another, is a single bond, -O-,; -C (O) O-, -OC (O) -, -CF 2 O-、-OCF 2 -、-CH 2 CH 2 -、-CF 2 CF 2 -、-CH 2 O、-OCH 2 -, -CH = CH-or-C ≡ C-; z is 5 And said Z 6 One or more of H in (a) may be substituted by F, cl, br, I;
R 5 and R 6 Independently of one another, H, F, cl, br, I, CN, SCN, NCS, SF 5 Or an alkyl or alkoxy group having 1 to 15 carbon atoms, or an alkenyl, alkenyloxy, alkynyl or alkynyloxy group having 2 to 15 carbon atoms; the R is 5 The terminal group of (A), the R 6 May be H, CN or CF 3 Monosubstitution, said R 5 And said R 6 In one or more CH 2 The radicals being optionally substituted by-O-, -C (O) O-; -OC (O) -, -CF 2 O-、-OCF 2 -、-CH 2 CH 2 -、-CF 2 CF 2 -、-CH 2 O-、-OCH 2 -, -CH = CH-or-C ≡ C-substituted and having heteroatoms not directly bonded, said R being 5 The R is 6 One or more of H in (a) may be substituted by F, cl, br, I;
6. The liquid crystal composition according to claim 5, wherein the compound represented by the formula III is selected from one or more of the following compounds represented by the sub-formulae III-1 to III-5, and the sub-formulae III-1 to III-5 are specifically:
7. the liquid crystal composition of claim 1, further comprising one or more compounds represented by formula iv, in particular:
wherein q is 0,1 or 2;
L 1 and L 2 Each independently of the others being H, F, cl, br, CN, or an alkyl group having 1 to 5 carbon atoms, or an alkenyl or alkynyl group having 2 to 5 carbon atomsA base;
Z 7 and each Z 8 Independently of one another, is a single bond, -O-,; -C (O) O-, -OC (O) -, -CF 2 O-、-OCF 2 -、-CH 2 CH 2 -、-CF 2 CF 2 -、-CH 2 O、-OCH 2 -, -CH = CH-or-C ≡ C-; z is 7 And each of said Z 8 One or more of H in (a) may be substituted by F, cl, br, I;
R 7 and R 8 Independently of one another, H, F, cl, br, I, CN, SCN, NCS, SF 5 Or an alkyl or alkoxy group having 1 to 15 carbon atoms, or an alkenyl, alkenyloxy, alkynyl or alkynyloxy group having 2 to 15 carbon atoms; the R is 7 The terminal group of (1), the R 8 Can be H, CN or CF 3 Monosubstitution, said R 7 And said R 8 In one or more CH 2 The radicals being optionally substituted by-O-, -C (O) O-, -OC (O) -, -CF 2 O-、-OCF 2 -、-CH 2 CH 2 -、-CF 2 CF 2 -、-CH 2 O、-OCH 2 -, -CH = CH-or-C ≡ C-substitution and is such that the heteroatoms are not directly bonded, said R 7 The R is 8 One or more of H in (a) may be substituted by F, cl, br, I;
8. The liquid crystal composition according to claim 7, wherein the compound represented by the formula iv is selected from one or more of the following compounds represented by sub-formulae iv-1 to iv-8, and the sub-formulae iv-1 to iv-8 are specifically:
9. the liquid crystal composition of claim 1, wherein the liquid crystal composition comprises
The described
The above-mentioned
The above-mentioned
The described
The described
The described
The described
The above-mentioned
The above-mentioned
The above-mentioned
The described
The weight percentages of the components are respectively 18%, 11%, 5%, 12%, 8%, 6%, 7% and 13%; alternatively, the first and second electrodes may be,
the liquid crystal composition comprises
The above-mentioned
The described
The described
The above-mentioned
The above-mentioned
The described
The above-mentioned
The above-mentioned
The described
The described
The described
35%, 5%, 10%, 8%, 4%, 10%, 6%, 8%, 2%; alternatively, the first and second electrodes may be,
the liquid crystal composition comprises
The above-mentioned
The above-mentioned
The above-mentioned
The above-mentioned
The above-mentioned
The described
The above-mentioned
The described
The above-mentioned
The described
The described
The above-mentioned
The described
The above-mentioned
The weight percentages of the components are respectively 10 percent, 5 percent and 9 percent 9%, 8%, 5%, 8%, 6%; alternatively, the first and second liquid crystal display panels may be,
the liquid crystalThe composition comprises
The above-mentioned
The described
The described
The described
The described
The above-mentioned
The above-mentioned
The above-mentioned
The described
The above-mentioned
Respectively 35%, 10%, 5%, 6%, 8%Percent, 8 percent, 10 percent, 6 percent and 6 percent; alternatively, the first and second liquid crystal display panels may be,
the liquid crystal composition comprises
The described
The described
The above-mentioned
The described
The described
The above-mentioned
The above-mentioned
The above-mentioned
The above-mentioned
The above-mentioned
The described
The described
The above-mentioned
35%, 3%, 5%, 3%, 8%, 9%, 8%, 6%, 4%, 6%, 5%, 3% by weight, respectively; alternatively, the first and second liquid crystal display panels may be,
the liquid crystal composition comprises
The above-mentioned
The above-mentioned
The above-mentioned
The above-mentioned
The described
The described
The above-mentioned
The above-mentioned
The above-mentioned
The described
The mass percentages of the components are respectively 30%, 8%, 13%, 5%, 8%, 6%, 10% and 4%.
10. A liquid crystal display panel comprising a first substrate, a second substrate, and a liquid crystal layer, wherein the first substrate and the second substrate are disposed opposite to each other, the liquid crystal layer is disposed between the first substrate and the second substrate, and the liquid crystal layer comprises the liquid crystal composition according to any one of claims 1 to 9.
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| CN202211400148.5A CN115710514A (en) | 2022-11-09 | 2022-11-09 | Liquid crystal composition and liquid crystal display panel |
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| CN202211400148.5A Pending CN115710514A (en) | 2022-11-09 | 2022-11-09 | Liquid crystal composition and liquid crystal display panel |
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