Display device

1. A display device comprising:

a display panel including a display area in which a plurality of pixels are arranged; and

a light source unit overlapping the display panel and including at least one light source,

wherein the light source unit is configured to irradiate infrared light to a predetermined region within the display area when displaying an image on the display area to change the luminance of pixels disposed in the predetermined region;

wherein:

each pixel includes a transistor and a light emitting diode electrically connected to the transistor; and

irradiation of the infrared light to the transistor generates a leakage current of the transistor.

2. The display device of claim 1 , wherein, during display of the image, the predetermined region displays a specific symbol.

3. The display device of claim 1 , wherein a combination or one of the at least one light source is configured to irradiate infrared light to the predetermined region.

4. The display device of claim 1 , wherein the at least one light source includes a plurality of light sources arranged in a matrix form.

5. The display device of claim 1 , wherein the at least one light source includes a plurality of light sources arranged in a predetermined shape, and the predetermined shape corresponds to the predetermined region.

6. The display device of claim 1 , wherein the at least one light source includes a light source having a light emission surface of a predetermined shape, and the predetermined shape corresponds to the predetermined region.

7. The display device of claim 1 , further comprising an optical member between the display panel and the light source unit.

8. The display device of claim 7 , wherein the optical member includes a light guide plate.

9. The display device of claim 1 , wherein the predetermined region has a smaller area than the display area.

10. A display device comprising:

a display panel including a display area in which a plurality of pixels are arranged; and

a light source unit disposed on a rear surface of the display panel and including at least one infrared light source,

wherein:

a combination or one of the at least one infrared light source is configured to irradiate infrared light to a predetermined region within the display area; and

the image displayed on the display area is displayed with a different luminance from a normal luminance in the predetermined region;

wherein:

each pixel includes a plurality of transistors and a light emitting diode electrically connected to the plurality of transistors; and

irradiation of the infrared light to at least one transistor among the plurality of transistors generates a leakage current of the at least one transistor.

11. The display device of claim 10 , wherein, during display of the image, the predetermined region displays a specific symbol.

12. The display device of claim 10 , wherein the at least one infrared light source includes a plurality of infrared light sources arranged in a matrix form.

13. The display device of claim 12 , wherein the plurality of infrared light sources are configured to be driven in a passive matrix method.

14. The display device of claim 10 , wherein the at least one infrared light source includes a plurality of infrared light sources arranged in a predetermined shape, and the predetermined shape corresponds to the predetermined region.

15. The display device of claim 10 , wherein the at least one infrared light source includes an infrared light source having a light emission surface of the predetermined shape, and the predetermined shape corresponds to the predetermined region.

16. The display device of claim 10 , further comprising an optical member between the display panel and the light source unit.

17. The display device of claim 16 , wherein the optical member includes a light guide plate.

18. The display device of claim 10 , wherein the infrared light source is an infrared light emitting diode.