US 10,093,858 B2 · Cholesteric liquid crystal composition, liquid crystal display panel and preparation method thereof

Abstract

Provided are a cholesteric liquid crystal composition, and a liquid crystal display panel including the composition, and their preparation methods. The cholesteric liquid crystal composition contains a block copolymer and a cholesteric liquid crystal, wherein the block copolymer has a block A including a chiral group M1 and a block B including a chiral group M2, and the cholesteric liquid crystal has at least two different pitches. The display panel includes an array substrate and a counter substrate placed by cell assembly, and a liquid crystal layer disposed between the array substrate and the counter substrate, wherein the liquid crystal layer comprises the cholesteric liquid crystal composition. The liquid crystal layer in the planar texture is capable of reflecting light of at least two wavelengths in the visible light region.

Claims15

Dependent claims

A cholesteric liquid crystal composition comprising a block copolymer and a cholesteric liquid crystal, wherein:

the block copolymer comprises a block A containing a chiral group M1 and a block B containing a chiral group M2;
the cholesteric liquid crystal has at least two different pitches;
the block A comprises a repeating unit of a formula (I):
wherein R1 is independently selected from hydrogen and C1-20 alkyl;
and n1 is an integer indicating the number of repeating units;
the block B comprises a repeating unit of a formula (II):
wherein R2 is independently selected from hydrogen and C1-20 alkyl;
and n2 is an integer indicating the number of repeating units;
and
the chiral group M1 and the chiral group M2 are each independently selected from the group consisting of:

7 more elements

Dependencies are inferred from the claim text.

Facts

Application

15/540,171Filed 27 May 2016

Priority

CN 2016 1 01247364 Mar 2016

Published

US 2018/0044593 A115 Feb 2018

Granted

9 Oct 2018

Term ends

Not estimatedThe source records don’t support an estimate.

Classification12 codes

C09K 19/38
Characterised by the chemical structure of the liquid crystal components , e.g. by a specific unit: polymers
C09K 19/2021
The chain containing -COO- or -OCO- groups: compounds containing at least one asymmetric carbon atom
C09K 19/3066
Cyclohexane rings: in which the rings are linked by a chain containing carbon and oxygen atoms, e.g. esters or ethers
C09K 19/42
Characterised by the chemical structure of the liquid crystal components , e.g. by a specific unit: mixtures of liquid crystal compounds covered…

Cholesteric liquid crystal composition, liquid crystal display panel and preparation method thereof

Life of this patent

Cholesteric liquid crystal composition, liquid crystal display panel and preparation method thereof

Life of this patent

Abstract

Claims15