Liquid crystal composition and liquid crystal display device comprising the same

Patent metadata

Field	Value
Publication number	US-2016348002-A1
Application number	US-201615091371-A
Country	US
Kind code	A1
Filing date	Apr 5, 2016
Priority date	May 29, 2015
Publication date	Dec 1, 2016
Grant date	—

Abstract

A liquid crystal composition includes one or more compounds represented by Chemical Formula 1.

In Chemical Formula 1,

are a cyclohexane or tetrahydropyran, and R1 and R2 are each independently hydrogen, a C1 to C8 alkyl group, a C2 to C8 alkenyl group, or a C1 to C8 alkoxy group.

First claim

What is claimed is:

1 . A liquid crystal composition comprising one or more compound represented by Chemical Formula 1:

wherein,

are independently a cyclohexane or tetrahydropyran, and
R1 and R2 are independently a hydrogen, a C1 to C8 alkyl group, a C2 to C8 alkenyl group, or a C1 to C8 alkoxy group.

2 . The liquid crystal composition of claim 1 , wherein:
in the compound of Chemical Formula 1, one or more hydrogen in R1 and R2 is substituted with F, one or more —CH 2 — group in R1 and R2 is substituted with —OCH 2 —, or —OCF 2 —, or one or more —CH 3 group in R1 and R2 is substituted with —CF 3 or —OCF 3 .

3 . The liquid crystal composition of claim 1 , wherein:
in the compound of Chemical Formula 1, one or more hydrogen in

is substituted with F, or one or more —CH 2 — group in

is substituted with —O— or —CF 2 —.

4 . The liquid crystal composition of claim 1 , wherein:
the compound represented by Chemical Formula 1 is at least one compound selected from Chemical Formulas 1-1 to 1-9:

5 . The liquid crystal composition of claim 1 , wherein:
the compound represented by Chemical Formula 1 is present in an amount of about 1 wt % to about 40 wt % based on the entire weight of the liquid crystal composition.

6 . The liquid crystal composition of claim 1 , wherein:
the liquid crystal composition further comprises at least one compound selected from Chemical Formulas 2-1 to 2-8:

wherein, R3 and R4 are independently hydrogen, a C1 to C8 alkyl group, a C2 to C8 alkenyl group, or a C1 to C8 alkoxy group.

7 . The liquid crystal composition of claim 6 , wherein:
one or more hydrogen in R3 and R4 is substituted with F, one or more —CH 2 — group in R3 and R4 is substituted with —OCH 2 —, —CF 2 —, or —OCF 2 —, or one or more —CH 3 group in R3 and R4 is substituted with —CF 3 or —OCF 3 .

8 . The liquid crystal composition of claim 6 , wherein:
the compound selected from Chemical Formulas 2-1 to 2-8 is present in an amount of about 2 wt % to about 40 wt %, based upon the entire weight of the liquid crystal composition.

9 . The liquid crystal composition of claim 1 , wherein:
the liquid crystal composition further comprises at least one compound selected from Chemical Formulas 3-1 to 3-12:

wherein, R5 and R6 are independently hydrogen, a C1 to C8 alkyl group, a C2 to C8 alkenyl group, or a C1 to C8 alkoxy group.

10 . The liquid crystal composition of claim 9 , wherein:
at least one hydrogen in R5 and R6 is substituted with fluorine.

11 . The liquid crystal composition of claim 9 , wherein:
the compound selected from Chemical Formulas 3-1 to 3-12 is present in an amount of about 2 wt % to about 30 wt % based upon the entire liquid crystal composition.

12 . A liquid crystal display comprising:
a first insulation substrate comprising a pixel electrode; a second insulation substrate facing the first insulation substrate and comprising a common electrode; and a liquid crystal layer positioned between the first insulation substrate and the second insulation substrate, wherein the liquid crystal layer comprises one or more compound represented by Chemical Formula 1:

wherein,

are independently a cyclohexane or tetrahydropyran, and
R1 and R2 are independently hydrogen, a C1 to C8 alkyl group, a C2 to C8 alkenyl group, or a C1 to C8 alkoxy group.

13 . The liquid crystal display of claim 12 , wherein:
in the compound of Chemical Formula 1, one or more hydrogen in R1 and R2 is substituted with F, one or more —CH 2 — group in R1 and R2 is substituted —OCH 2 —, —CF 2 —, or —OCF 2 —, or one or more —CH 3 group in R1 and R2 is substituted with —CF 3 or —OCF 3 .

14 . The liquid crystal display of claim 12 , wherein:
in the compound of Chemical Formula 1, one or more hydrogen in

is substituted with F, or one or more —CH 2 — group in

is substituted with —O— or —CF 2 —.

15 . The liquid crystal display of claim 12 , wherein:
the compound represented by Chemical Formula 1 is at least one compound selected from Chemical Formulas 1-1 to 1-9:

16 . The liquid crystal display of claim 12 , wherein:
the compound represented by Chemical Formula 1 is present in an amount of about 1 wt % to about 40 wt % based upon the entire weight of the liquid crystal composition.

17 . The liquid crystal display of claim 12 , wherein:
the liquid crystal layer further comprises at least one compound selected from Chemical Formulas 2-1 to 2-8:

wherein, R3 and R4 are independently hydrogen, a C1 to C8 alkyl group, a C2 to C8 alkenyl group, or a C1 to C8 alkoxy group.

18 . The liquid crystal display of claim 17 , wherein:
one or more hydrogen in R3 and R4 is substituted with F, one or more —CH 2 — group in R3 and R4 is substituted with one among —OCH 2 —, —CF 2 —, or —OCF 2 —, or one or more —CH 3 group in R3 and R4 is substituted with —CF 3 or —OCF 3 .

19 . The liquid crystal display of claim 17 , wherein:
the compound selected from Chemical Formulas 2-1 to 2-8 is present in an amount of about 2 wt % to about 40 wt % based on the entire weight of the liquid crystal composition.

20 . The liquid crystal display of claim 12 , wherein:
the liquid crystal layer further comprises at least one compound selected from Chemical Formulas 3-1 to 3-12:

wherein, R5 and R6 are independently hydrogen, a C1 to C8 alkyl group, a C2 to C8 alkenyl group, or a C1 to C8 alkoxy group.

21 . The liquid crystal display of claim 20 , wherein:
at least one hydrogen in R5 and R6 is substituted with fluorine.

22 . The liquid crystal display of claim 20 , wherein:
the compound of Chemical Formula 3-1 to 3-12 is present in an amount of about 2 wt % to about 30 wt % based upon the entire weight of the liquid crystal composition.

23 . The liquid cry

Assignees

• Samsung Display Co Ltd

Inventors

• Kwon Sun Young
• Takeshita Fusayuki
• Oh Keun Chan

Classifications

• C09K2019/122

  Ph-Ph · CPC title

• C09K19/062

  containing one non-condensed benzene ring · CPC title

• C07C43/188

  Unsaturated ethers · CPC title

• C09K19/3003 Primary

  Compounds containing at least two rings in which the different rings are directly linked (covalent bond) · CPC title

• C09K2019/124

  Ph-Ph-Ph-Ph · CPC title