Liquid crystal display which suppresses interference fringes

Details Liquid crystal display which suppresses interference fringes Liquid crystal display which suppresses interference fringes

1993-07-21

1997-07-15

Sikes, William L.

Liquid crystal cells, elements and systems

Particular structure

Lens or prism separate from projection system

362 31, 349 64, G02F 11335, F21V 704

Patent

active

056488580

ABSTRACT:
A liquid crystal display device in which a back light is arranged below a liquid crystal display panel having a plurality of pixels arrayed on a transparent substrate surface and in which a prism plate having a plurality of stripe grooves arrayed in parallel is arranged between the liquid crystal display panel and the back light. If the stripe grooves has a pitch .lambda..sub.1 (mm) and if the pixels in parallel with the stripe grooves has a pitch .lambda..sub.2 (mm), the liquid crystal display device is constructed to satisfy a relation of .lambda..sub.1 .ltoreq.0.075.lambda..sub.2 /(.lambda..sub.2 +0.075). This construction can increase the brightness of the back light and prevent the interference fringes from being formed on the display frame.

REFERENCES:
patent: 4642736 (1987-02-01), Masuzawa et al.
patent: 5050946 (1991-09-01), Hathaway et al.
patent: 5126882 (1992-06-01), Oe et al.
patent: 5161041 (1992-11-01), Abileah et al.

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