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

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

  • CN 102,140,352 A
  • Filed: 01/13/2011
  • Published: 08/03/2011
  • Est. Priority Date: 02/03/2010
  • Status: Active Application
First Claim
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1. a liquid crystal aligning agent is characterized in that containing (A) polyamic acid A, and this polyamic acid A is by making tetracarboxylic dianhydride and the diamine reactant gained that comprises the diamines with photoreactivity structure;

  • (B) polyamic acid B, this polyamic acid B is selected from 1 by making, 2,3, at least a tetracarboxylic dianhydride in the group that 4-tetramethylene tetracarboxylic dianhydride, pyromellitic acid dianhydride constitute be selected from 2,2 '"'"'-dimethyl-4,4 '"'"'-benzidine, Ursol D, 4,4 '"'"'-diaminodiphenyl-methane, 4, at least a diamine reactant gained in the group that 4 '"'"'-diamino-diphenyl ether constitutes, but get rid of above-mentioned polyamic acid A.

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