Patent ID: 8764270

Claim:
A display device comprising: a display panel displaying an image; a light source generating light; a light guide plate guiding the light and supplying the light to the display panel; a receiving container receiving the light source and the light guide plate, the receiving container including a bottom portion, and a plurality of sidewall portions extending from each side of a perimeter of the bottom portion to form a recessed portion; a photosensor coupled to the receiving container, the photosensor sensing the light; and a light receiving hole comprising a first end formed in a sidewall portion of the plurality of sidewall portions adjacent to the light guide plate, and a second end, the first end being closer to the light guide plate and the second end being closer to the photosensor, wherein a height of the first end is smaller than a thickness of the light guide plate, and the second end overlaps the photosensor, wherein the photosensor does not overlap the light guide plate along an axis extending from the photosensor through the first end formed in the sidewall, wherein the axis is perpendicular with respect to the photosensor.