Light-guide plate, surface light emitting device using...

Details Light-guide plate, surface light emitting device using... Light-guide plate, surface light emitting device using...

2006-08-29

2006-08-29

Pak, Sung (Department: 2874)

Optical waveguides

Noncyclindrical or nonplanar shaped waveguide

C362S615000, C362S330000

Reexamination Certificate

active

07099554

ABSTRACT:
At the time of forming irregularities on at least one of a reflection face and an emitting face of a light-guide plate, irregularities are formed as a plurality of linear grooves formed in a direction perpendicular to the entrance face. When the grooves are formed by means of grinding, surfaces of the grooves are made rough. Therefore, light can be appropriately condensed and diffused by the grooves, and the luminance can be enhanced and the unevenness of the luminance can be reduced.

REFERENCES:
patent: 5506924 (1996-04-01), Inoue
patent: 6328453 (2001-12-01), Ohkawa
patent: 2004/0246697 (2004-12-01), Yamashita et al.
patent: 10-253960 (1998-09-01), None
patent: 10-268138 (1998-10-01), None
patent: 2003-86012 (2003-03-01), None

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