Polymerizable compound, liquid crystal composition comprising the polymerizable compound, and liquid crystal display device

Abstract

This invention discloses a polymerizable compound, a liquid crystal composition comprising the polymerizable compound, and a liquid crystal display device. The polymerizable compound is a compound as shown in Formula I: wherein, , Represented separately and independently: , or ,and , Not at the same time ; , Any one of the hydrogen atoms may be substituted by a C1-C5 alkyl or alkoxy group, a C2-C5 alkenyl or alkenyloxy group, a fluorinated C1-C5 alkyl or alkoxy group, a fluorinated C2-C5 alkenyl or alkenyloxy group, or a halogen, wherein any one or more unconnected -CH groups may be present. 2- can be independently converted by -O-, -S-, -CO-, -CH- 2O-、-OCH 2-, -COO-, and -OOC- substitutions. This polymerizable compound exhibits advantages such as small SEM particle size after polymerization, excellent diffusion properties, and antistatic properties. When used in liquid crystal display components, it offers advantages such as good uniformity, rapid static discharge, and avoidance of display defects like bright spots. I.

Claims

1. A polymerizable compound, as shown in Formula I: I; wherein, R represents H, C1-C5 alkyl or alkoxy, C2-C5 alkenyl or alkenyloxy, fluorinated C1-C5 alkyl or alkoxy, fluorinated C2-C5 alkenyl or alkenyloxy, or halogen; P is a polymerizable group; Sp is a spacer group or a single bond; and represent independently: and or , and and are not simultaneously ; wherein any one hydrogen in and can be substituted by C1-C5 alkyl or alkoxy, C2-C5 alkenyl or alkenyloxy, fluorinated C1-C5 alkyl or alkoxy, fluorinated C2-C5 alkenyl or alkenyloxy, or halogen, wherein any one or more unconnected -CH 2- can be independently substituted by -O-, -S-, -CO-, -CH 2O-, -OCH 2-, -COO-, or -OOC-.

2. The polymerizable compound according to claim 1, wherein the compound represented by formula I is selected from the group consisting of compounds represented by formulas I-1 to I-9: I-1, I-2, I-3, I-4, I-5, I-6, I-7, I-8, I-9; wherein, Selected from, wherein any one of the hydrogen atoms may be substituted by a C1-C5 alkyl or alkoxy group, a C2-C5 alkenyl or alkenyloxy group, a fluorinated C1-C5 alkyl or alkoxy group, a fluorinated C2-C5 alkenyl or alkenyloxy group, or a halogen, wherein any one or more unconnected -CH 2- groups may be independently substituted by -O-, -S-, -CO-, -CH 2O-, -OCH 2-, -COO-, or -OOC-.

3. The polymerizable compound according to claim 2, wherein the compounds represented by formulas I-1 to I-9 are selected from the group consisting of the compounds represented by formulas I-1-1 to I-9-1: I-1-1, I-1-2, I-1-3, I-1-4, I-1-5, I-1-6, I-1-7, I-1-8, I-1-9, I-1-10, I-1-11, I-1-12, I-1-13, I-1-14, I-1-15, I-1-16, I-1-17, I-1-18, I-2-1, I-3-1, I-4-1, I-5-1, I-6-1, I-7-1, I-8-1, I-9-1.

4. The polymerizable compound according to any one of claims 1-3, wherein the polymerizable group is selected from , or , wherein, • Indicates a connection site.

5. A liquid crystal composition comprising one or more polymerizable compounds as claimed in any one of claims 1-4.

6. The liquid crystal composition according to claim 5, wherein the total mass percentage of the polymerizable compound represented by Formula I in the liquid crystal composition is 0.01-1%.

7. The liquid crystal composition according to claim 5, wherein the liquid crystal composition further comprises one or more compounds of formula II: II; wherein, R1 and R2 each independently represent a C1-C10 alkyl or C2-C10 alkenyl group, wherein one or more non-adjacent -CH2- can be replaced by -O-, cyclopropyl, cyclobutyl, or cyclopentyl; Z1 represents -CH2-CH2-, -O-, -CO-O-, -O-CO-, -CH2O-, -OCH2-, -CH=CH-, -C≡C, or a single bond; m1 and m2 each independently represent 0, 1, or 2; and each independently represent , , , or; and / or the liquid crystal composition further comprises one or more compounds of formula III: III; wherein R3 and R4 each independently represent a C1-C10 alkyl or C2-C10 alkenyl group, wherein one or more non-adjacent -CH2- can be replaced by -O-, cyclopropyl, cyclobutyl, or cyclopentyl; Z2 represents -CH2-CH 2-, -O-, -CO-O-, -O-CO-, -CH 2O-, -OCH 2-, -CH=CH-, -C≡C or a single bond; m3 represents 0, 1 or 2; represents , , , or; and / or the liquid crystal composition further comprises one or more compounds of formula IV: IV; wherein R 5 and R 6 each independently represent a C1-C10 alkyl or a C2-C10 alkenyl, wherein one or more non-adjacent -CH 2- can be replaced by -O-, cyclopropyl, cyclobutyl or cyclopentyl.

8. The liquid crystal composition according to claim 5, wherein the liquid crystal composition further comprises one or more compounds of formula V: V; wherein, R7 and R8 each independently represent H, F, Cl, C1-C10 alkyl or C1-C10 fluoroalkyl, wherein one or more non-adjacent -CH2- can be replaced by -O-, cyclopropyl, cyclobutyl or cyclopentyl; X represents -O-, -S-, -CO- or -CH2O-; Z3 represents -O-, -CO-O-, -O-CO-, -CH2O-, -OCH2-, -CH=CH-, -CF2O- or a single bond; represents , , , , , , , , , , , , or; m4 represents 0 or 1.

9. A liquid crystal display device, prepared from raw materials comprising a liquid crystal composition as described in any one of claims 5-8.

10. The liquid crystal display device according to claim 9, wherein the liquid crystal display device is a PSVA, SAVA, IPS or FFS mode display device.

Images