LIQUID CRYSTAL ALIGNMENT AGENT, LIQUID CRYSTAL ALIGNMENT FILM, AND LIQUID CRYSTAL DISPLAY ELEMENT

摘要

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 polymerizable compound (C) containing a benzophenone structure, and a solvent (D). The polymer (A) is obtained by reacting a mixture. The mixture includes a tetracarboxylic dianhydride component (a1) and a diamine component (a2). The polysiloxane (B) contains a polymerizable unsaturated group, wherein the polymerizable unsaturated group includes a group represented by formula (1-1), a group represented by formula (1-2), or a combination of the two.;

主权项

1. A liquid crystal alignment agent, comprising:
a polymer (A); a polysiloxane (B); a polymerizable compound (C) containing a benzophenone structure; and a solvent (D), wherein the polymer (A) is obtained by reacting a mixture, and the mixture comprises a tetracarboxylic dianhydride component (a1) and a diamine component (a2), the polysiloxane (B) contains a polymerizable unsaturated group, and the polymerizable unsaturated group comprises a group represented by formula (1-1), a group represented by formula (1-2), or a combination of the two, in formula (1-1), A represents a hydrogen atom or a methyl group; a represents an integer of 1 to 3, in formula (1-2), b represents an integer of 0 or 1.