Patent ID: 8164708

Claim:
A light guide plate comprising: a light-incident portion allowing light generated from a point light source to be incident thereon; a light-facing portion opposite to the light-incident portion; and a first prism pattern disposed between the light-incident portion and the light-facing portion and formed to have a curved portion having a deviation in a distance away from the light-incident portion so that the first prism pattern is substantially perpendicular to a path of an incident light from the point light in top view at a central portion of the light guide plate, wherein the first prism pattern is partially deflected at an end portion of the light guide plate so that the first prism pattern is oblique to the path of the incident light from the point light in top view at the end portion of the light guide plate, the end portion of the light guide plate being perpendicular to the light-incident and light-facing portions.