Liquid crystal material and liquid crystal display panel

Patent metadata

Field	Value
Publication number	US-11008516-B2
Application number	US-201815781591-A
Country	US
Kind code	B2
Filing date	Mar 19, 2018
Priority date	Mar 1, 2018
Publication date	May 18, 2021
Grant date	May 18, 2021

Abstract

A liquid crystal material and a liquid crystal display panel includes a liquid crystal material including liquid crystal molecules, a polymerizable monomer, and an auxiliary alignment agent. A structural formula of the auxiliary alignment agent is:

The A group includes at least one oxygen atom, at least one nitrogen atom, or at least one oxygen atom and at least one nitrogen atom, the Sp group essentially is a —(CH 2 ) n — group, the Z group is selected from:

and any combination thereof, the R group is a straight or branched first alkyl group containing 5 to 20 carbon atoms, and the L group is selected from:

and any combination thereof.

First claim

What is claimed is:

1. A liquid crystal material, comprising: liquid crystal molecules, a polymerizable monomer, and an auxiliary alignment agent;
wherein a structural formula of the auxiliary alignment agent is:

wherein the A group is selected from the group consisting of:

and any combination thereof;
wherein the Sp group is a —(CH 2 ) n — group, or a substituted group thereof obtained by substituting one or more —CH 2 groups in the —(CH 2 ) n — group with one or more groups selected from —O—, —S—, —CO—, —CO—O—, —O—CO—, —O—CO—O—, —OCH 2 —, —CH 2 O—, —CH═CH—, —CF═CF—, —C≡C—, —CH═CH—COO— or —OCO—CH═CH—, and n is an integer between 1 and 8;
wherein the Z group is selected from:

and any combination thereof, and the

is a phenyl group, a substituted group thereof obtained by substituting one or more hydrogen atoms on the phenyl group with F, Cl, Br, I, —CN, —NO 2 or —C(═O)H, or a cycloalkyl group;
wherein the R group is a straight or branched first alkyl group containing 5 to 20 carbon atoms, a first group obtained by substituting one —CH 2 — group in the first alkyl group with phenyl, cycloalkyl, —CONH, —COO—, —O—CO—, —S—, —CO— or —CH—CH—, a second group obtained by substituting one of hydrogen atoms in the first alkyl group with an iron atom or a chlorine atom, or a third group obtained by substituting one of hydrogen atoms in the first group with an iron atom or a chlorine atom; and
wherein the L group is a polymerizable group attached to the Z group, the L group is at least one selected from:

and any combination thereof.

2. A liquid crystal display panel, comprising: an array substrate, a color filter substrate disposed opposite to the array substrate, and a liquid crystal material disposed between the array substrate and the color filter substrate;
wherein the liquid crystal material comprises liquid crystal molecules, a polymerizable monomer, and an auxiliary alignment agent;
wherein the structural formula of the auxiliary alignment agent is represented by one of formulas selected from:

3. The liquid crystal display panel according to claim 2 , wherein the polymerizable monomer includes one selected from the group consisting of an acrylate, an acrylate derivative, a methacrylate, a methacrylate derivative, styrene, a styrene derivative, an epoxy resin, and any combination thereof.

4. A liquid crystal material, comprising: liquid crystal molecules, a polymerizable monomer, and an auxiliary alignment agent;
wherein the structural formula of the auxiliary alignment agent is represented by one of formulas selected from:

5. The liquid crystal material according to claim 4 , wherein the polymerizable monomer includes one selected from the group consisting of an acrylate, an acrylate derivative, a methacrylate, a methacrylate derivative, styrene, a styrene derivative, an epoxy resin, and any combination thereof.

Assignees

• Shenzhen China Star Optoelectronics Semiconductor Display Tech Co Ltd

Inventors

• Lan Song

Classifications

• C09K19/56 Primary

  Aligning agents · CPC title

• C09K2019/0425

  characterized by a specific unit that results in a functional effect · CPC title

• C07D233/32 Primary

  One oxygen atom · CPC title

• G02F1/1337

  Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers · CPC title

• G02F1/133514

  Colour filters · CPC title