A display device includes 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 sidewall portion adjacent to the light guide plate and a bottom portion extending from the sidewall portion, a photosensor coupled to the receiving container, the photosensor sensing the light, and a light receiving hole formed in the receiving container, the light receiving hole comprising a first end 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.
1. 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.
2. The display device of claim 1 , wherein the height of the first end is about one third (⅓) or less than the thickness of the light guide plate.
3. The display device of claim 1 , wherein the second end is formed in the bottom portion, the first end having an opening in a first plane, and the second end having an opening in a second plane substantially perpendicular to the first plane.
4. The display device of claim 1 , wherein the first end is formed adjacent to the bottom portion.
5. The display device of claim 1 , further comprising a light adjusting member interposed between the second end and the photosensor.
6. The display device of claim 5 , wherein the light adjusting member overlaps the first end or the second end.
7. The display device of claim 5 , wherein the light adjusting member comprises a diffusive sheet.
8. The display device of claim 1 , wherein the second end has an area greater than that of the first end.
9. The display device of claim 1 , wherein the first end and the second end have the same area.
10. The display device of claim 1 , wherein the light receiving hole is formed substantially at a lower end of the sidewall portion.
11. The display device of claim 1 , wherein the light receiving hole is formed substantially at a center of the sidewall portion.
12. The display device of claim 1 , wherein the light receiving hole receives only the light passing through the light guide plate.
13. The display device of claim 1 , Wherein the photosensor is disposed in a groove formed in the sidewall portion or the bottom portion.
14. The display device of claim 1 , wherein the first end has an opening in a first plane, and the second end has an opening in a second plane substantially perpendicular to the first plane.
15. A display device comprising:
a light source providing light;
a receiving container including a bottom portion, a plurality of sidewall portions extending from each side of a perimeter of the bottom portion to form a recessed portion, and a seating portion;
a light guide plate guiding the light, the light guide plate having a first side and a second side, the first side faces the bottom portion and the second side faces a sidewall portion of the plurality of sidewall portions;
a light receiving hole comprising a first end formed in the sidewall portion of the plurality of sidewall portions adjacent the second side of the light guide pate, and a second end, the light receiving hole formed through the receiving container; and
a photosensor disposed at or near the second end of the light receiving hole, the photosensor sensing the light received from the light receiving hole, wherein the first end of the light receiving hole completely overlaps the second side of the light guide plate, 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.
16. The display device of claim 15 , further comprising a display panel disposed on the seating portion of the receiving container.
17. The display device of claim 15 , wherein the first end has an opening in a first plane and the second end has an opening in a second plane, and the first plane is substantially perpendicular with respect to the second plane.
18. The display device of claim 15 , wherein the first end faces a first direction and the second end faces a second direction, and the first direction is substantially parallel with the second direction.
19. The display device of claim 15 , Wherein a size of the first end is substantially smaller than a size of the second side.
20. The display device of claim 15 , wherein a size of the first end is smaller than a size of the second end.