Light source device with optical guiding member and planar...

Details Light source device with optical guiding member and planar... Light source device with optical guiding member and planar...

2006-04-25

2006-04-25

Quach-Lee, Y. My (Department: 2875)

Illumination

Edge lighted panel

Light modifier for edge lit light source

C362S621000, C362S613000

Reexamination Certificate

active

07033062

ABSTRACT:
A planar light source device (6) for a liquid crystal display device. The planar light source device includes a light source device (2) and a light guide plate (67). The light source device includes a light-emitting element (21), and an optical guiding member (20) that is hollow and has a reflective surface. The reflective surface receives light rays emitted by the light-emitting element, and guides the light rays out from a plurality of generally aligned through holes (23) defined in a front light-emitting surface (28) of the optical guiding member. The light guide plate has a light incident surface adjacent to the light source device. The planar light source device can greatly diminish possible dark regions on the light-emitting surface of the light guide plate, and provide uniform illumination for an LCD.

REFERENCES:
patent: 4779166 (1988-10-01), Tanaka et al.
patent: 6386720 (2002-05-01), Mochizuki
patent: 6598989 (2003-07-01), Huang
patent: 6840654 (2005-01-01), Guerrieri et al.

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