Liquid crystal composition of negative monomer containing cyclopentyl cyclohexenyl and liquid crystal display element or liquid crystal display thereof

Patent metadata

Field	Value
Publication number	US-10519377-B1
Application number	US-201816125005-A
Country	US
Kind code	B1
Filing date	Sep 7, 2018
Priority date	Sep 7, 2018
Publication date	Dec 31, 2019
Grant date	Dec 31, 2019

Abstract

Disclosed are a liquid crystal composition and a display element or display using the liquid crystal composition, wherein the liquid crystal composition contains one or more compounds of general formulas I, II and III,

The liquid crystal composition disclosed in the present invention has an excellent performance, an optical anisotropy in the range of 0.080 to 0.150, a low rotary viscosity, a fast response time, and good chemical, optical and thermal stabilities, and is very suitable for manufacturing liquid crystal display elements, particularly suitable for active matrix display elements, such as active matrix displays using a VA, FFS or IPS mode.

First claim

The invention claimed is:

1. A liquid crystal composition, wherein said liquid crystal composition comprises a first component consisting of one or more compounds represented by general formula I, a second component consisting of one or more compounds represented by general formula II, and a third component consisting of one or more compounds represented by general formula III:

wherein
R 1 , R 2 , R 3 , R 4 and R 5 each independently represent an alkyl group having a carbon atom number of 1-5, an alkoxy group having a carbon atom number of 1-5 or an alkenyl group having a carbon atom number of 2-5, wherein any CH 2 in the groups represented by R 4 and R 5 may be substituted with a cycloalkylene having a carbon atom number of 3-5;
m represents 1 or 2, and n represents 0 or 1;
Z represents a single bond, —COO—, —CH 2 O— or —CH 2 CH 2 —;

2. The liquid crystal composition according to claim 1 , wherein said liquid crystal composition, the content in mass percentage of said first component is 1-30%, the content in mass percentage of said second component is 10-65%, and the content in mass percentage of said third component is 1-50%.

3. The liquid crystal composition according to claim 1 , wherein said compound represented by general formula I is a compound represented by formulas I1 to I3:

said compound represented by general formula II is a compound represented by formulas II1 to II5,

said compound represented by general formula III is a compound represented by formulas III1 to III17,

wherein
r represents an integer of 1 to 5; and
R 2 , R 3 , R 4 and R 5 each independently represent an alkyl group having a carbon atom number of 1-5, an alkoxy group having a carbon atom number of 1-5 or an alkenyl group having a carbon atom number of 2-5, wherein any CH 2 in the groups represented by R 4 and R 5 may be substituted with a cycloalkylene having a carbon atom number of 3-5.

4. The liquid crystal composition according to claim 1 , wherein said liquid crystal composition further comprises a fourth component consisting of one or more compounds represented by general formula IV, with the content in mass percentage of said fourth component being 1-30%,

wherein
R 6 represents a linear alkyl group having a carbon atom number of 1-5, wherein any CH 2 may be substituted with a cycloalkylene having a carbon atom number of 3-5; and
R 7 represents a linear alkyl group having a carbon atom number of 1-5.

5. The liquid crystal composition according to claim 4 , wherein said compound represented by general formula IV is a compound represented by formulas IV1 to IV5:

wherein
R 6 represents a linear alkyl group having a carbon atom number of 1-5, wherein any CH 2 may be substituted with a cycloalkylene having a carbon atom number of 3-5.

6. The liquid crystal composition according to claim 1 , wherein said liquid crystal composition further comprises a fifth component consisting of one or more compounds represented by general formula V, with the content in mass percentage of said fifth component being 1-15%,

wherein
R 8 and R 9 each independently represent an alkyl group having a carbon atom number of 1-5, an alkoxy group having a carbon atom number of 1-5 or an alkenyl group having a carbon atom number of 2-5, wherein any CH 2 in the groups represented by R 8 and R 9 may be substituted with a cycloalkylene having a carbon atom number of 3-5;
and W represents O or S.

7. The liquid crystal composition according to claim 1 , wherein said liquid crystal composition further comprises a sixth component consisting of one or more compounds represented by general formula VI, with the content in mass percentage of said sixth component being 1-15%,

wherein R 10 and R 11 each independently represent an alkyl group having a carbon atom number of 1-5, an alkoxy group having a carbon atom number of 1-5 or an alkenyl group having a carbon atom number of 2-5, wherein any CH 2 in the groups represented by R 10 and R 11 may be substituted with a cycloalkylene having a carbon atom number of 3-5.

8. A liquid crystal display element or liquid crystal display comprising the liquid crystal composition of claim 1 , wherein said display element or display is an active matrix display element or display or a passive matrix display element or display.

9. The liquid crystal display element or liquid crystal display according to claim 8 , wherein said active matrix display element or display is a TN-TFT, IPS-TFT or VA-TFT liquid crystal display element or display.

Assignees

• Shijiazhuang Chengzhi Yonghua Display Materials Co Ltd

Inventors

• Xing Wenxiao
• Zhao Lei
• Yun Guoliang
• Zhang Xing
• Wen Gang
• Liang Ruixiang
• Zhai Yuanyuan
• Dong Yanli

Classifications

• C09K2019/3425

  Six-membered ring with oxygen(s) in fused, bridged or spiro ring systems · CPC title

• C09K2019/3077

  Cy-Cy-COO-Ph · CPC title

• C09K2019/3075

  Cy-COO-Ph · CPC title

• C09K2019/3037

  Cy-Cy-C2H4-Ph · CPC title

• C09K2019/3036

  Cy-C2H4-Ph · CPC title