Electro-optic display methods

Details Electro-optic display methods Electro-optic display methods

G - Physics

02

F

325/1, 345/59

G02F 1/13 (2006.01) C09K 19/20 (2006.01) G02F 1/133 (2006.01) G02F 1/139 (2006.01)

Patent

CA 1099809

Abstract of the Disclosure 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 at a crossover audio frequency of an applied field. Illuminating such a composi- tion and simultaneously subjecting it alternately to an electric field of a first audio frequency below the cross- over frequency and an electric field of a second audio frequency above the crossover frequency causes alteration of the molecular orientation and optical properties of the composition so as to modulate the incident radiation.

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