Display cell having active and passive areas

Details Display cell having active and passive areas Display cell having active and passive areas

1990-09-10

1992-07-14

Hille, Rolf

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 67, 359 69, 359 71, G02F 113

Patent

active

051308274

ABSTRACT:
An LCD has both active and passive display areas. The active areas are presented by selective energization of dichroic liquid crystal, and the passive areas are created by a mask. The LCD cell includes a sealed cavity containing the dichroic liquid crystal which has an area substantially less than the total display area. The remaining portion of the LCD cell is free of liquid crystal and is transparent to the passage of light from a rear light source.

REFERENCES:
patent: 3959963 (1976-06-01), Murrell
patent: 4067185 (1978-01-01), Huguenin
patent: 4077032 (1978-02-01), Volkman
patent: 4198810 (1980-04-01), Fahrenschon
patent: 4227777 (1980-10-01), Murakami
patent: 4234947 (1980-11-01), Matsumoto
patent: 4255806 (1981-03-01), Fahrenschon et al.
patent: 4385842 (1983-05-01), Weisner
patent: 4413915 (1983-11-01), Besson
patent: 4435046 (1984-03-01), Nishimura
patent: 4519679 (1985-05-01), Horikiri et al.
patent: 4541692 (1985-09-01), Collins et al.
patent: 4770499 (1988-09-01), Kobayashi et al.
patent: 4838661 (1989-06-01), McKee et al.

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