Liquid crystal display device backlit by LED's coupled to printe

Details Liquid crystal display device backlit by LED's coupled to printe Liquid crystal display device backlit by LED's coupled to printe

1993-12-09

1995-09-26

Gross, Anita Pellman

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 42, 359 48, 359 83, G02F 11335, G02F 11333

Patent

active

054538556

ABSTRACT:
A liquid crystal display device with an illuminator installed in the back of a liquid crystal display panel. The illuminator is made of a shallow box-form holder having a reflective inner surface, a plurality of LED's installed in at least one side wall of the holder, a light-diffusing plate installed between the liquid crystal display panel and the holder, and a printed circuit board mounted on the outer surface of the bottom of the holder. The LED's are of different light directional angles and inclined toward the bottom surface of the holder so that the light from the LED's can be reflected by the reflective bottom surface towards the display panel.

REFERENCES:
patent: 4791540 (1988-12-01), Dreyer, Jr. et al.
patent: 5064276 (1991-11-01), Endo et al.
patent: 5184888 (1993-02-01), Sakuma et al.

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