Display device

Patent metadata

Field	Value
Publication number	US-11482161-B2
Application number	US-202017110109-A
Country	US
Kind code	B2
Filing date	Dec 2, 2020
Priority date	Feb 11, 2020
Publication date	Oct 25, 2022
Grant date	Oct 25, 2022

Abstract

A display device including a display panel having 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. The light source unit irradiates 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.

First claim

What is claimed is:

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.

Assignees

• Samsung Display Co Ltd

Inventors

• Lee Seung Chan
• Ko Yoo Min
• Jeon Joo Hee
• Hong Sung Jin

Classifications

• H10W90/00

  Package configurations · CPC title

• G09G2300/023

  Display panel composed of stacked panels · CPC title

• G09G2320/0686

  with two or more screen areas displaying information with different brightness or colours · CPC title

• G09G3/3208

  organic, e.g. using organic light-emitting diodes [OLED] · CPC title

• G09G5/10

  Intensity circuits · CPC title