Color separation optical plate for use with LCD panels

Details Color separation optical plate for use with LCD panels Color separation optical plate for use with LCD panels

1996-12-18

2000-08-15

Sikes, William L.

Liquid crystal cells, elements and systems

Liquid crystal system

Projector including liquid crystal cell

349 57, 349 95, G02F 11335

Patent

active

061044466

ABSTRACT:
A color separation optical plate is described which is superimposed onto a transmissive LCD panel. The color separation plate separates incident white light into its red/green/blue (RGB) components and guides each component through the appropriate sub-pixel (dot) of the LCD panel. The color separation plate utilizes a microprism array of direct vision microprisms each having a combination of refractive and gradient index optics to concentrate the light onto the appropriate dot and to separate the colors. This combination has the theoretical capability of increasing color LCD panel transmissivity by as much as a factor of six.

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