Light guide plate having V-cut grooves and a liquid crystal display using the same

Abstract

A light guide plate (10) includes a bottom surface (11), a light incident surface (12) adjacent to the bottom surface, a light emitting surface (13) opposite to the bottom surface, and a plurality of V-shaped grooves adjacent to the bottom surface, each of the V-shaped grooves defining two bottom angles (α, β) and a top line (101), the bottom angles being different. The top line of each V-shaped groove is configured so as to maximize the areas of the interfaces of the V-shaped groove, having regard to the top lines of all the V-shaped grooves also being configured to provide a desired distribution of intensity of light beams that emit from the emitting surface in a desired direction. For example, the configurations of the top lines can be such that a maximum luminance of the light guide plate is at a center region of the light emission surface.

Dependencies are inferred from the claim text.