Optical plate and backlight module using the same

Details Optical plate and backlight module using the same Optical plate and backlight module using the same

2007-09-27

2010-10-26

O'Shea, Sandra L (Department: 2875)

Illumination

Edge lighted panel

Light guide

C362S612000, C362S613000, C362S615000, C362S621000

Reexamination Certificate

active

07819570

ABSTRACT:
An exemplary optical plate includes one or more transparent plate section. The transparent plate section includes a light output surface, a bottom surface, a plurality of spherical depressions, a plurality of protruding structures and one or more lamp-receiving portion. The light output surface is opposite to the bottom surface. The spherical depressions are formed on the bottom surface. The protruding structures are formed on the light output surface. Each protruding structure includes two conical frustums aligned at a center axis and stacked together. The lamp-receiving portion is defined in the bottom surface. A backlight module using the present optical plate is also provided.

REFERENCES:
patent: 2003/0058390 (2003-03-01), Fujii
patent: 2007/0086179 (2007-04-01), Chen et al.
patent: 2007/0263408 (2007-11-01), Chua
patent: 2008/0055931 (2008-03-01), Verstraete et al.
patent: 2008/0130317 (2008-06-01), Shimura et al.
patent: 2008/0252980 (2008-10-01), Hebrink et al.
patent: 2009/0160758 (2009-06-01), Manabe et al.
patent: 2009/0196069 (2009-08-01), Iwasaki

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