Liquid crystal composition and display device thereof

Patent metadata

Field	Value
Publication number	US-10920146-B2
Application number	US-201615771472-A
Country	US
Kind code	B2
Filing date	Nov 16, 2016
Priority date	Nov 19, 2015
Publication date	Feb 16, 2021
Grant date	Feb 16, 2021

Abstract

Provided is a liquid crystal composition, which comprises a component prepared from one or more compounds selected from a general formula I; and a component prepared from one or more compounds selected from a general formula II. The liquid crystal composition has the characteristics of low viscosity, high reliability, appropriate optical anisotropy, and appropriate dielectric anisotropy, and is applicable to liquid crystal display devices.

First claim

What is claimed is:

1. A liquid crystal composition, comprising:
at least one compound selected from a group consisting of compounds of general formula I

and
at least one compound selected from a group consisting of compounds of general formula II

wherein:
R 1 and R 2 are same or different, and each independently represents C 1 -C 7 linear alkyl, C 1 -C 7 linear alkoxy;
R 3 and R 4 are same or different, and each independently represents C 1 -C 7 linear alkyl;
X represents CF 3 ; and
m represents 1 or 2;
wherein the liquid crystal composition further comprises at least one compound selected from a group consisting of compounds of general formula III

wherein,
R 5 and R 6 are same or different, and each independently represents C 1 -C 10 linear alkyl, and
wherein the liquid crystal composition further comprises at least one compound of general formulas IV and V

wherein,
R 7 , R 8 , R 9 and R 10 are same or different, and each independently represents C 1 -C 7 linear alkyl, C 1 -C 7 linear alkoxy;
Z 1 represents a single bond, —CH 2 O— or —COO—;
n represents 1 or 2.

2. The liquid crystal composition according to claim 1 , wherein the compound of general formula III is selected from a group consisting of the following compounds:

3. The liquid crystal composition according to claim 1 , wherein the compound of general formula IV is selected from a group consisting of the following compounds:

wherein the compound of general formula V is selected from a group consisting of the following compounds:

4. The liquid crystal composition according to claim 1 , wherein the liquid crystal composition further comprises at least one compound of general formula VI

wherein
R 11 and R 12 are same or different, and each independently represents C 1 -C 7 linear alkyl, C 1 -C 7 linear alkoxy, C 2 -C 5 linear alkenyl;
rings

are same or different, and each independently represents

q represents 1 or 2;
when q represents 2, two rings

are same or different, and each independently represents

5. The liquid crystal composition according to claim 4 , wherein the compound of general formula VI is selected from a group consisting of the following compounds:

6. The liquid crystal composition according to claim 1 , wherein the liquid crystal composition further comprises at least one compound of general formula VII

wherein,
R 13 and R 14 are same or different, and each independently represents C 1 -C 7 linear alkyl, C 1 -C 7 linear alkoxy;
rings

are same or different, and each independently represents

Z 2 represents a single bond, —CH 2 O— or —COO—;
p represents 0 or 1;
when Z 2 represents a single bond, p represents 1.

7. The liquid crystal composition according to claim 6 , wherein the compound of general formula VII is selected from a group consisting of the following compounds:

8. A liquid crystal display device comprising the liquid crystal composition of claim 1 .

9. The liquid crystal composition according to claim 1 , wherein the compound of general formula I is selected from a group consisting of the following compounds:

the compound of general formula II is selected from a group consisting of the following compounds:

Assignees

• Jiangsu Hecheng Display Tech

Inventors

• Xu Haibin
• Han Wenming
• Xu Shuang
• Wang Panpan
• Wang Li

Classifications

• C09K19/3066 Primary

  in which the rings are linked by a chain containing carbon and oxygen atoms, e.g. esters or ethers · CPC title

• C09K2019/308

  Cy-Cy-COO-Ph-Ph · CPC title

• C09K2019/3009

  Cy-Ph · CPC title

• C09K2019/3004

  Cy-Cy · CPC title

• C09K2019/3021

  Cy-Ph-Ph-Cy · CPC title