Liquid crystal display

Details Liquid crystal display Liquid crystal display

1988-11-10

1990-04-03

Gron, Teddy S.

Compositions

Radioactive compositions

Nuclear reactor fuel

25229901, 25229961, 25229963, 350350R, G02F 113, C09K 1934

Patent

active

049135309

ABSTRACT:
A liquid crystal display comprising two substrates and a nematic liquid crystal present between said two substrates, wherein each of said substrates comprises a glass plate, an electrode thereon and an aligning layer subjected to a molecular aligning treatment for a pretilt angle of 1.degree. to 30.degree. on the electrode, wherein an optically active material is added to the nematic crystal which has a positive dielectric anisotropy, wherein the average alignment direction in the longer direction of said liquid crystal molecule is twisted at an angle .phi. of 210.degree. to 300.degree. to impart a spiral structure to the liquid crystal and a ratio d/p of the spiral pitch p of the liquid crystal molecule and the liquid crystal thickness d are

REFERENCES:
patent: 4533488 (1985-08-01), Fukui et al.
patent: 4752414 (1988-06-01), Eidenschink et al.
patent: 4776973 (1988-10-01), Bofinger et al.
patent: 4779960 (1988-10-01), Kozaki et al.
patent: 4815825 (1989-03-01), Nakagomi et al.
patent: 4824596 (1989-04-01), Kitano et al.

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