Patent ID: 6839102
Filing Date: 2005-01-04
Classification: G02B

Abstract:
1. A liquid crystal display device having a light guide with a refractive surface, comprising: a light source; a light guide plate having a front surface, a rear surface with a light input portion into which light from the light source is projected, and a refractive surface opposed to and facing the light input portion for guiding light that enters the light input portion into an inner portion of the light guide plate toward a light output portion thereof; and a liquid crystal display adjacent to the light output portion of the light guide plate; wherein the refractive surface is inclined toward the rear surface of the light guide plate, and has a plurality of divided surfaces each being connected by a connection surface; and wherein an angle between the rear surface and the divided surfaces is larger than an angle between the rear surface and a line formed by connecting peaks formed by the divided surface and the connection surfaces.