Planar light source

Details Planar light source Planar light source

2006-03-14

2006-03-14

O'Shea, Sandra (Department: 2875)

Illumination

Edge lighted panel

Light guide

C362S623000, C362S621000

Reexamination Certificate

active

07011442

ABSTRACT:
A planar light source of this invention is formed with chamfered portions at an upper end of the light receiving side surface where the light receiving side surface and the light emitting surface of the light guide plate intersect and at a lower end of the light receiving side surface where the light receiving side surface and the reflection surface of the light guide plate intersect. The chamfered portions can make indistinguishable the bright lines, that may be produced during illumination, to prevent a dark-bright fringe pattern from showing up, thereby preventing a possible degradation of liquid crystal display quality.

REFERENCES:
patent: 5359691 (1994-10-01), Tai et al.
patent: 5659410 (1997-08-01), Koike et al.
patent: 5712694 (1998-01-01), Taira et al.
patent: 6443583 (2002-09-01), Ha
patent: 6572236 (2003-06-01), Suzuki et al.
patent: 2001/0036068 (2001-11-01), Suzuki et al.
patent: 2003-294954 (2003-10-01), None

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