Liquid crystal device

Details Liquid crystal device Liquid crystal device

1990-08-31

1991-09-10

Thomas, Alexander S.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

428 1, 4284735, 359100, 359900, G02F 1133, G02F 1137

Patent

active

050468227

ABSTRACT:
The present invention provides a liquid crystal material disposed between said pair of substrates, wherein at least one of said substrates is provided with a film comprising a polyimide compound having in its polyimide main-chain structural unit at least one alkyl side chain containing an alkyl chain moiety having a length of 2 to 10 carbon atoms.

REFERENCES:
patent: 4781439 (1988-11-01), Yokokura et al.

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