Rear screen projection with twisted nematic crystals for improve

Details Rear screen projection with twisted nematic crystals for improve Rear screen projection with twisted nematic crystals for improve

1988-05-09

1990-03-27

Miller, Stanley D.

350334, 350339D, G02F 1133

Patent

active

049115359

ABSTRACT:
The disclosure relates to a light source positioned behind a liquid crystal display, the output from the liquid crystal being projected onto a projection screen that has random polarization, thereby permitting a wide range of vision. The screen can be a part of the liquid crystal display by providing a frosted surface thereon which permits diffusion of the light emanating from the display.

REFERENCES:
patent: 3994565 (1976-11-01), Van Doorn et al.
patent: 4704004 (1987-11-01), Nosker

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