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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9976085 B1

PDFFull Text
Date of Patent:
May. 22, 2018

Filed:

Nov. 05, 2015

Liquid crystal alignment agent, liquid crystal alignment film, and liquid crystal display element

Applicant:

Chi Mei Corporation, Tainan, TW;

Inventor:

Wan-Ting Huang, Tainan, TW;

Assignee:

Chi Mei Corporation, Tainan, TW;

Attorney:

JCIPRNET

Primary Examiner:

Megan McCulley

Int. Cl.
CPC ...
C09K 19/56 (2006.01); C09K 19/32 (2006.01); C09D 179/08 (2006.01); C08G 73/10 (2006.01); C09K 19/04 (2006.01); C09K 19/12 (2006.01); C09K 19/20 (2006.01); C08G 77/14 (2006.01); C08G 77/20 (2006.01); G02F 1/1337 (2006.01); C08G 77/00 (2006.01);
U.S. Cl.
CPC ...
C09K 19/56 (2013.01); C08G 73/1042 (2013.01); C08G 73/1067 (2013.01); C08G 73/1078 (2013.01); C09D 179/08 (2013.01); C09K 19/32 (2013.01); C08G 77/14 (2013.01); C08G 77/20 (2013.01); C08G 77/80 (2013.01); C09K 2019/0448 (2013.01); C09K 2019/122 (2013.01); C09K 2019/2035 (2013.01); C09K 2019/2078 (2013.01); G02F 1/133711 (2013.01); G02F 1/133788 (2013.01);
Abstract

A liquid crystal alignment agent capable of forming a liquid crystal display element having good resistance to ultraviolet decay and no mura effect, a liquid crystal alignment film, and a liquid crystal display element having the same are provided. The liquid crystal alignment agent includes a polymer (A), a polysiloxane (B), a photopolymerizable compound (C), and a solvent (D). The polymer (A) is obtained by reacting a first mixture. The first mixture includes a tetracarboxylic dianhydride component (a1) and a diamine component (a2). The polysiloxane (B) is obtained by reacting a polysiloxane compound and a carboxylic acid compound (b4) having a Cto Clong chain. The polysiloxane compound is obtained by reacting a second mixture including a silane compound (b1) containing a polymerizable unsaturated group and a silane compound (b2) containing an epoxy group.

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