LIGHT GUIDE MEMBER, SURFACE LIGHT SOURCE DEVICE EQUIPPED WITH IT, LIQUID CRYSTAL DISPLAY DEVICE EQUIPPED WITH LIGHT GUIDE MEMBER AS SURFACE LIGHT SOURCE, AND MACHINING METHOD OF LIGHT GUIDE MEMBER

摘要

PROBLEM TO BE SOLVED: To provide uniform luminance by restraining luminance irregularity throughout the entire area of an emission surface of a light guide member.;SOLUTION: An irregular uneven shape 4f having an average surface roughness Ra of 0.01-0.5 m in the X-direction along an incident surface 4a through an end 4d facing the the incident surface 4a and an average surface roughness Ra of 0.01-1.0 m in the Y-direction along the incident surface 4a is formed on the emission surface 4c to roughen it.;COPYRIGHT: (C)2005,JPO&NCIPI