Liquid crystal display element

Details Liquid crystal display element Liquid crystal display element

1981-02-13

1983-05-03

Corbin, John K.

Stock material or miscellaneous articles

Composite

Of bituminous or tarry residue

350340, 428 1, 2522994, G02F 113

Patent

active

043818862

ABSTRACT:
A liquid crystal display element which may have a multi-layer structure comprising substrates having electrodes and liquid crystal orientation controlling films on the sides thereof facing a liquid crystal layer and one or more liquid crystal layers interposed between said substrates, characterized in that the liquid crystal orientation controlling film is made from a copolymer produced by reacting a dibasic acid dihydrazide, a diamine and a tetracarboxylic acid dianhydride, followed by ring closure and dehydration with heating, is excellent in transparency and the electrode (partially reflected) pattern is hardly observable.

REFERENCES:
patent: 3994567 (1977-11-01), Matsumoto

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