Light spreading device and backlight module utilizing the same

Details Light spreading device and backlight module utilizing the same Light spreading device and backlight module utilizing the same

2008-05-27

2008-05-27

Husar, Stephen F. (Department: 2875)

Illumination

Edge lighted panel

Light modifier for edge lit light source

C362S613000, C362S628000, C362S333000, C362S339000, C385S129000, C385S146000, C385S901000

Reexamination Certificate

active

11419513

ABSTRACT:
A light spreading device and a backlight module utilizing the same. The backlight module includes a light guide, a plurality of point lights, and a plurality of light spreading devices. The light guide includes an entrance surface. The point lights are disposed near the entrance surface. Each light spreading device, corresponding to one of the point lights, is disposed between the light guide and the corresponding point light.

REFERENCES:
patent: 3740540 (1973-06-01), Takeichi et al.
patent: 6679621 (2004-01-01), West et al.
patent: 2006/0109684 (2006-05-01), Nesterenko et al.
patent: 1670585 (2005-09-01), None
patent: 1687831 (2005-10-01), None
CN Office Action mailed May 8, 2007.

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