LIGHT GUIDE PLATE FOR BACK LIGHT, BACK LIGHT UNIT AND BACK LIGHT

摘要

PROBLEM TO BE SOLVED: To suppress abnormal emission of light on the side of the light entrance face and on the opposite face. SOLUTION: The reflection face 12 of a light guide plate 1 has a light- scattering part 12b of satin finish formed on part of the region. The light- scattering part 12b is formed on the reflection face 12 excluding a region 12a of about 1 to 2 mm width along the light entering face 11 and a region 12c of about 1 to 2 mm width along the thin end face 14. The regions 12a and 12c where no scattering part 12b is formed are finished into a mirror face and have a smaller scattering degree than in the light-scattering part 12b.