Illumination – Edge lighted panel – Light guide
Reexamination Certificate
2007-08-07
2007-08-07
Sember, Thomas M. (Department: 2885)
Illumination
Edge lighted panel
Light guide
C362S339000
Reexamination Certificate
active
11157887
ABSTRACT:
A light guide plate (10) includes a bottom surface (11), a light incident surface (12) adjacent to the bottom surface, a light emitting surface (13) opposite to the bottom surface, and a plurality of V-shaped grooves adjacent to the bottom surface, each of the V-shaped grooves defining two bottom angles (α, β) and a top line (101), the bottom angles being different. The top line of each V-shaped groove is configured so as to maximize the areas of the interfaces of the V-shaped groove, having regard to the top lines of all the V-shaped grooves also being configured to provide a desired distribution of intensity of light beams that emit from the emitting surface in a desired direction. For example, the configurations of the top lines can be such that a maximum luminance of the light guide plate is at a center region of the light emission surface.
REFERENCES:
patent: 5054885 (1991-10-01), Melby
patent: 6074069 (2000-06-01), Chao-Ching et al.
patent: 6669350 (2003-12-01), Yamashita et al.
patent: 2004/0012945 (2004-01-01), Yamashita et al.
patent: 2004/0130879 (2004-07-01), Choi et al.
patent: 2006/0203467 (2006-09-01), Tseng
Pang Jia-Pang
Teng Ching-Hung
Yang Chiu-Lien
Chung Wei Te
Innolux Display Corp.
Sember Thomas M.
Shallenberger Julie A.
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