Light guide plate

Details Light guide plate Light guide plate

2007-10-24

2010-02-02

Ton, Anabel M (Department: 2875)

Illumination

Edge lighted panel

Light guide

C362S620000, C362S628000, C362S615000

Reexamination Certificate

active

07654722

ABSTRACT:
The wedge-shaped light guide plate has a number of reflection structures with gaps therebetween arranged along the light reflection plane. Each reflection structure from a previous gap contains sequentially a slant surface extended away from the light emission surface, a second reflection surface further slanting away from the light emission plane, and a first reflection surface slanting towards the light emission plane to connect to a next gap. The second and first reflection surfaces form a prism element. In one embodiment of the present invention, the reflection structures are more densely arranged as they are more distant from the light source. In an alternative embodiment of the present invention, the reflection structures are arranged uniformly.

REFERENCES:
patent: 6950155 (2005-09-01), Umemoto
patent: 7156546 (2007-01-01), Higashiyama
patent: 7252424 (2007-08-01), Hsu et al.
patent: 7360939 (2008-04-01), Sugiura
patent: 7401962 (2008-07-01), Yamashita et al.
patent: 2006/0268576 (2006-11-01), Matsui et al.

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