Light guide plate, surface light source using the light guide plate, and liquid crystal display using the surface light source

Abstract

An outer light collecting portion 10 which sticks out of a light emission surface 14 to the light emission direction at the same time when a light guide plate is formed by resin forming with a mold. An area of a surface for collecting outer light is larger than that of a conventional light guide plate so as to collect outer light effectively. Light from a light source which is incidence through a light incident surface 12 reflects from a light reflection surface 13 and two side surface 11 of a light guide plate 1, and is emitted as synthesized light having the even directivity from a light emission surface 14.

Dependencies are inferred from the claim text.