Composition for liquid crystal color display

Details Composition for liquid crystal color display Composition for liquid crystal color display

1983-11-22

1985-11-26

Gron, Teddy S.

Compositions

Liquid crystal compositions

Containing pleochroic dye

350349, C09K 334, G02F 113

Patent

active

045553556

ABSTRACT:
As dichroic dyes for use in a liquid color display device, compounds of formula (I) ##STR1## such as 4'-octylphenyl perylene-3,9-dicarboxylate are provided. These compounds have various characteristic properties. For example, (1) they have a sufficient coloring ability in small amounts; (2) they have a high dichroic ratio and show a high contrast by application and non-application of voltage; (3) they have sufficient compatibility with liquid crystals; (4) they have excellent durability, are stable, and do not reduce the performance of a display device even in long-term use.

REFERENCES:
patent: 4211473 (1980-07-01), Shanks
patent: 4378302 (1983-03-01), Afterguy et al.
patent: 4454057 (1984-06-01), Kaneko et al.
patent: 4459218 (1984-07-01), Yamada et al.

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