Light guide plate and surface light source

摘要

The present invention provides a surface light source ( 6 ) using a light guide plate ( 2 ) to illuminate a liquid crystal display. The light guide plate comprises a light incident surface ( 21 ), a light-emitting surface ( 22 ) perpendicular to the light incident surface, a bottom surface ( 23 ) opposite to the light-emitting surface, and a plurality of side surfaces. An anti-reflective coating is formed on the light incident surface and the light-emitting surface. A reflective coating is formed on the bottom surface and at least one of the side surfaces. The light guide plate provides a high luminace output for the liquid crystal display.