Illumination – Edge lighted panel – Light guide
Reexamination Certificate
2006-04-06
2008-11-11
O'Shea, Sandra (Department: 2875)
Illumination
Edge lighted panel
Light guide
C362S606000, C362S626000
Reexamination Certificate
active
07448788
ABSTRACT:
A backlight module includes a light guide plate and a light source. The light guide plate includes a first end portion, a second end portion, a middle portion between the first and second end portions, a top face extending from the first end portion to the second end portion, a bottom face extending from the first end portion to the second end portion, a light entrance face interconnecting the top and bottom faces at the first end portion, and a plurality of prismatic strips formed on the bottom face. The prismatic strips have a lower density at the first end portion as compared to the middle portion. The density is defined as a total length of the prismatic strips per unit area of the bottom face. The light source is disposed adjacent to the light entrance face.
REFERENCES:
patent: 5926601 (1999-07-01), Tai et al.
patent: 5961198 (1999-10-01), Hira et al.
patent: 6854857 (2005-02-01), Hara et al.
Chen Chien-Hsiang
Hsaio Der-Woei
Hwang Ping-Feng
Wu Chia-Tsao
Coretronic Corporation
Cranson James W
O'Shea Sandra
Ohlandt Greeley Ruggiero & Perle L.L.P.
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