Light guide plate and backlight module using the same

Details Light guide plate and backlight module using the same Light guide plate and backlight module using the same

2007-08-07

2007-08-07

Pak, Sung (Department: 2874)

Optical waveguides

Noncyclindrical or nonplanar shaped waveguide

C362S615000

Reexamination Certificate

active

11181634

ABSTRACT:
A backlight module (2) includes a light source (66) and a light guide plate (20), the light guide plate includes a light incidence surface (25), a light-emitting surface (21) adjacent to the light incidence surface; and a bottom surface (22) opposite to the light-emitting surface, the bottom surface includes a plurality of curved grooves (23), the light-emitting surface includes a plurality of grooves (24). In the backlight module, because of the curved grooves of the bottom surface and the grooves of the light-emitting surface, light beams entering the light guide plate are concentrated at the bottom surface and light-emitting surface, thus the surface light beams outputting from the light-emitting surface have a rather higher brightness.

REFERENCES:
patent: 6582095 (2003-06-01), Toyoda
patent: 2001/0053075 (2001-12-01), Parker et al.
patent: 2002/0163790 (2002-11-01), Yamashita et al.
patent: 2003/0137824 (2003-07-01), Shinohara et al.
patent: 2003/0156328 (2003-08-01), Goto et al.
patent: 2003/0169584 (2003-09-01), Miyashita
patent: 2004/0012944 (2004-01-01), Suzuki et al.
patent: 2004/0245218 (2004-12-01), Chen
patent: 2005/0243574 (2005-11-01), Teng et al.

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