Light guiding plate for backlight module

Details Light guiding plate for backlight module Light guiding plate for backlight module

2005-01-11

2005-01-11

Ward, John Anthony (Department: 2875)

Illumination

Light modifier

Refractor

C362S035000, C362S328000, C040S546000

Reexamination Certificate

active

06840656

ABSTRACT:
A light guiding plate according to the invention is mounted in a vertical backlight module between an illumination element and a diffusion plate. The light guiding plate has a flat light incidence surface at a bottom of the light guiding plate and a light emergence surface at a top of the light guiding plate. The light incidence surface faces the illumination element. The light emergence surface is adjacent to the diffusion plate and has a concave portion right above the illumination element. The concave portion of the light guiding plate further diffuses the light transmitted right above the illumination element to homogenize the light emergence and increase the glow for display of the backlight module. The total thickness of the vertical backlight module thereby is reduced to minimize the volume of the backlight module.

REFERENCES:
patent: 4660936 (1987-04-01), Nosker
patent: 5143433 (1992-09-01), Farrell
patent: 5357405 (1994-10-01), Park
patent: 5479275 (1995-12-01), Abileah
patent: 5479328 (1995-12-01), Lee et al.
patent: 5986728 (1999-11-01), Bernard

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