MATERIAL FOR VERTICAL ALIGNING AGENT

• US 20190308926A1
• Filed: 01/16/2017
• Published: 10/10/2019
• Est. Priority Date: 12/29/2016
• Status: Active Grant

• Current Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd. (TCL Technology Group Corp.)
• Original Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd. (TCL Technology Group Corp.)
• Inventors: Lan, Song
• Granted Patent: US 10,899,697 B2
• Time in Patent Office: Days
• CPC Class Codes: B32B 2457/202 LCD, i.e. liquid crystal displays
• CPC Class Codes: C07C 69/593 Dicarboxylic acid esters having only one carbon-to-carbon double bond
• CPC Class Codes: C07C 69/618 having unsaturation outside the six-membered aromatic ring
• CPC Class Codes: C07C 69/65 of unsaturated acids
• CPC Class Codes: C07C 69/732 of unsaturated hydroxy carboxylic acids
• CPC Class Codes: C09K 19/56 Aligning agents
• CPC Class Codes: C09K 2323/02 Alignment layer characterised by chemical composition
• CPC Class Codes: G02F 1/133711 by organic films, e.g. polymeric films
• CPC Class Codes: G02F 1/133742 for homeotropic alignment

Abstract

Disclosed is a material for a vertical aligning agent, and a molecular structure of the material is shown in formula (I):

R-L1P-L2_nQ  (I)

wherein Q is a polar anchor group, L1 is a rigid group, P is a polymerizable group, L2 is a linking group, R is a terminal flexible group, and n is in a range from 1 to 3. In the material, the polar anchor group is connected to the polymerizable group, which is beneficial to increase an aspect ratio of the material. Therefore, a fluid viscosity of the material can be reduced, and a diffusion effect of the material on a substrate can be improved.

Claims

1. A material for a vertical aligning agent, a molecular structure of the material being shown in formula (I):

R-L1

P-L2

_nQ 

 

(I)

wherein Q is a polar anchor group, L1 is a rigid group, P is a polymerizable group, L2 is a linking group, R is a terminal flexible group, and n is in a range from 1 to 3.

2. The material for the vertical aligning agent according to claim 1, wherein the polar anchor group Q is any one selected from a group consisting of amine, —

OH, —

COOH, —

SH, —

CN, —

Si(CH₃)₃, —

Si(OCH₃)₃, and —

SiCl₃.

3. The material for the vertical aligning agent according to claim 1, wherein the polymerizable group P refers to a polymerizable group under ultraviolet light.

4. The material for the vertical aligning agent according to claim 1, wherein the polymerizable group P is any one selected from a group consisting of methacrylate, acrylate, vinyl and ethyleneoxy.

5. The material for the vertical aligning agent according to claim 2, wherein the polymerizable group P is any one selected from a group consisting of methacrylate, acrylate, vinyl and ethyleneoxy.

6. The material for the vertical aligning agent according to claim 3, wherein the polymerizable group P is any one selected from a group consisting of methacrylate, acrylate, vinyl and ethyleneoxy.

7. The material for the vertical aligning agent according to claim 1, wherein the L2 is selected from C₃ to C₂₀ linear or branched alkylene substituted or unsubstituted by halogen.

8. The material for the vertical aligning agent according to claim 7, wherein one carbon atom or more carbon atoms of alkylene can be substituted by one selected from a group consisting of —

O—

, —

CONH—

, —

COO—

, —

O—

CO—

, —

CO—

, and —

CH═

CH—

group.

9. The material for the vertical aligning agent according to claim 7, wherein the halogen is F or Cl.

10. The material for the vertical aligning agent according to claim 1, wherein the L1 is 

A-Sp

_yA-,

wherein y is an integer selected from 0 to 5;

wherein A, which is identical or different from one another, is any one selected from substituted or unsubstituted C₆ to C₁₄ arylene or C₄ to C₆ cycloalkylene, and the arylene comprises a group consisting of phenylene, fused-ring arylene, and biphenylene multicyclic aryl; and

wherein Sp, which is identical or different from one another, is selected from a single bond or C₁ to C₈ alkyl, wherein one carbon atom or more carbon atoms can be optionally substituted by any one selected from a group consisting of —

O—

, —

S—

, —

CO—

, —

CO—

O—

, —

O—

CO—

, —

O—

CO—

O—

, —

OCH₂—

, —

CH₂O—

, —

CH═

CH—

, —

CF═

CF—

, —

C≡

C—

, —

CH═

CH—

COO—

, and —

OCO—

CH═

CH—

.

11. The material for the vertical aligning agent according to claim 10, wherein substituents on the A are one or more selected from a group consisting of halogen, cyano, linear C₁ to C₈ alkyl, and branched C₃ to C₈ alkyl.

12. The material for the vertical aligning agent according to claim 11, wherein one carbon atom or more nonadjacent carbon atoms of the alkyl can be substituted by oxygen or sulfur.

13. The material for the vertical aligning agent according to claim 1, wherein the R is selected from C₂ to C₁₀ alkyl substituted or unsubstituted by halogen.

14. The material for the vertical aligning agent according to claim 13, wherein one carbon atom or more nonadjacent carbon atoms of the alkyl can be substituted by oxygen or sulfur.

15. The material for the vertical aligning agent according to claim 1, wherein a molecular formula of the material is