2006-216569 is referenced by 69 patents.

PROBLEM TO BE SOLVED: To provide a surface light source device having high display quality, and provide a method for manufacturing such a high quality surface light source device at a low cost.SOLUTION: The surface light source device having at least one light source 1 and a plate-like light guide plate 10 consisting of a light entering face 11 onto which light from the light source 1 is made incident, a light exiting face 12 which is crossing at right angles with the light entering face 11 from which light entered from the light entering face 11 is emitted, a counter face 13 facing the light exiting face 12, the light exiting face 12 or the counter face 13 of the guide plate 10 are made as a rough face, arithmetic average roughness is found in the rough face, and also, in the rough face, ten-point average roughness is set not more than around fifteen times of the arithmetic average roughness.

Surface light source device and method for manufacturing the same
Application Number
Publication Number
Application Date
April 26, 2006
Publication Date
August 17, 2006
Nai Yasuto
Yoneda Toshiyuki
Mitsubishi Electric
F21Y 103/00
G02F 01/13357
G02B 06/00
F21V 08/00