Alignment treating agent for liquid crystal cell

Details Alignment treating agent for liquid crystal cell Alignment treating agent for liquid crystal cell

1992-08-07

1994-09-27

Wu, Shean

Compositions

Liquid crystal compositions

Containing nonchiral aligning agents

359 75, 528313, C09K 1956, G02F 113, C08G 6708

Patent

active

053505395

ABSTRACT:
The present invention relates to an alignment treating agent for a liquid crystal cell, which comprises an organic solvent-soluble polyimide resin comprising a tetracarboxylic acid and a diamine, at least 10 mol % of the diamine having a bivalent organic group selected from the group consisting of: ##STR1## The aligned film for a liquid crystal using the solvent-soluble polyimide resin of the present invention does not require a heat treatment at a high temperature at the time of forming a resin film and enables to use a substrate poor in heat-resistance, and alignment properties such as a tilt angle and a voltage maintenance of the aligned film are not deteriorated even after durability test at a high temperature.

REFERENCES:
patent: 5206337 (1993-04-01), Takeda et al.

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