Surface illuminant device

Details Surface illuminant device Surface illuminant device

1994-06-02

1995-03-28

Cole, Richard R.

Illumination

With polarizer

362 31, 362339, 359 49, 359 63, F21V 914, F21V 800

Patent

active

054023246

ABSTRACT:
A surface illuminate device illuminates a liquid crystal display panel by diffused light produced through a diffusing plate disposed on the front of an illuminant section. A prism sheet having many triangular prisms is disposed on the exit side of the diffusing plate so that the longitudinal direction of each prism is nearly parallel to the plane of polarization of a polarizing plate placed on the prism sheet side of the liquid crystal display panel. Thus, the surface illuminant device can provide bright illumination suitable for the backlight of the liquid crystal display panel.

REFERENCES:
patent: 4011001 (1977-03-01), Moriya
patent: 4017155 (1977-04-01), Yagi et al.
patent: 4020336 (1977-04-01), Linder
patent: 4789224 (1988-12-01), Bougsty
patent: 5064276 (1991-11-01), Endo et al.
patent: 5126882 (1992-06-01), Oe et al.
patent: 5341231 (1994-08-01), Yamamoto et al.

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