Electro-optic device

Details Electro-optic device Electro-optic device

1975-04-23

1976-08-10

Padgett, Benjamin R.

Compositions

Radioactive compositions

Nuclear reactor fuel

252299, 252408, G02F 113, C09K 334

Patent

active

039738302

ABSTRACT:
The present invention provides an improved electrooptical device having a cell for containing a liquid crystal and consisting of two light-transparent plates opposed to each other and having electrically conductive electrodes on the inner surfaces thereof, the electrodes on at least one inner surface being transparent, and spacer means between said opposed electrodes; and a power supply coupled to said electrodes for applying an electric voltage to said electrodes, whereas the improvement comprises a liquid crystal in said cell between said electrodes consisting of 99.95 to 65 wt.% of at least one nematic liquid crystal and 0.05 to 35 wt.% of at least one optically active compound of the formula; ##SPC1##
Wherein X is CH=N, --N=N--or ##EQU1##

REFERENCES:
patent: 3650603 (1972-03-01), Heilmeier et al.
patent: 3703331 (1972-11-01), Goldmacher et al.
patent: 3776615 (1973-12-01), Tsukamoto et al.
patent: 3779751 (1973-12-01), Haas et al.
patent: 3781088 (1973-12-01), Tsukamoto et al.
patent: 3792915 (1974-02-01), Oh et al.
patent: 3806230 (1974-04-01), Haas
patent: 3819531 (1974-06-01), Saeva et al.
patent: 3833287 (1974-09-01), Taylor et al.
patent: 3891307 (1975-06-01), Tsukamoto et al.
Gray, G. W. et al., Electronics Letters, vol. 9, No. 26, pp. 616-617 (12/27/73)
Gray, G. W. et al., Liquid Crystals & Plastic Crystals, vol. 1, Ellis Horwood, Ltd., London, pp. 170-171, 142-143 (Jan. 1974).

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