Patent ID: 8643803
Filing Date: 2014-02-04
Classification: G02F

Abstract:
1. A liquid crystal display device, comprising: a light guide plate for converting light from a light source into backlight for illumination; a first frame for containing said light guide plate; and a liquid crystal display panel provided over said light guide plate, wherein the light guide plate has a main surface which faces the liquid crystal display panel, and a plurality of sidewalls which intersect the main surface, the liquid crystal display device further comprises a photosensor that is placed so as to face one of the sidewalls of said light guide plate and detect an amount of said backlight, and said photosensor is placed so as to face the sidewall of said light guide plate through a hole or a notch created in a sidewall portion of said first frame, the sidewall portion of said first frame facing the sidewall of said light guide plate.