Electro-optic display devices and methods

Details Electro-optic display devices and methods Electro-optic display devices and methods

1974-06-28

1977-03-01

Corbin, John K.

Compositions

Radioactive compositions

Nuclear reactor fuel

252299, G02F 113

Patent

active

040099342

ABSTRACT:
An electro-optic display is provided which uses a liquid crystalline composition (a) having a positive, zero frequency dielectric anisotropy and (b) exhibiting a dielectric anisotropy inversion with increasing frequency of an applied field. Such a composition is subjected to an electric field of a first audio frequency and then subjected to a field of a second audio frequency of a magnitude sufficient to produce a dielectric anisotropy inversion in said composition. The resultant anisotropy changes allow the molecular orientation of the composition to be altered by the applied field thereby changing the optical properties of the composition.

REFERENCES:
patent: 3731986 (1973-05-01), Fergason
patent: 3857629 (1974-12-01), Freiser
Baur et al., "Controlled Decay of Electrically Induced . . . ," Applied Physics, (German), vol. 2, No. 6, pp. 349-350, Dec. 1973.

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