Patent ID: 6985131

Claim:
A liquid crystal display device comprising: a liquid crystal panel having a display area and a peripheral area; a backlight being disposed at a rear side surface of the liquid crystal panel; and a diffusing sheet and a prism sheet lying between the rear side surface of the liquid crystal panel and the backlight, wherein the backlight is provided by a substantially rectangular-shaped light guide plate and a linear lamp being disposed along an incidence plane provided at one side of the light guide plate, a light emission control pattern having a plurality of fan-shaped grooves slanted to one side of the light guide plate and formed at a corner portion of the side of the light guide plate, along which an end portion of the linear lamp is adjacent to, on a back surface except for a center portion of the light guide plate, the center of the fan-shaped grooves is positioned outside an end of the corner portion of the light guide light plate, and the plurality of the fan-shaped grooves are overlapped with the display area and the peripheral area of the liquid crystal panel.