Electro-optical composition of the guest-host type

Details Electro-optical composition of the guest-host type Electro-optical composition of the guest-host type

1980-03-10

1981-09-08

Gron, Teddy S.

Compositions

Radioactive compositions

Nuclear reactor fuel

2522991, 252408, 350350R, 260396R, G02F 113, C09K 334

Patent

active

042881471

ABSTRACT:
The electro-optical composition comprises a host liquid crystal and guest dichroic dye which is characterized generally as a linear, noncondensed aromatic compound including one or more quinonoid rings as the chromophores or color-generating groups of the dye molecule. The dyes of the invention have a long, rod-like structure to provide a high order parameter and impart various characteristic colors to the composition. Liquid crystal display devices incorporating the electro-optical composition exhibit improved contrast.

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patent: 4145114 (1979-03-01), Coates et al.
Constant, J. et al., "Photostable Anthraquinone Pleochroic Dyes," Presented at 7th Intern'l Liq. Cryst. Conf., Bordeaux, Fr. (Sep. 1978).
White, D. L. et al., J. Appl. Phys., vol. 45, No. 11, pp. 4718-4723, (1974).
Bloom, A. et al., Mol. Cryst. Liq. Cryst., vol. 40, pp. 213-221, (1977).
Uchida, T. et al., Mol. Cryst. Liq. Cryst., vol. 34, (Lett), pp. 150-158, (1977).

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