Display device

Patent metadata

Field	Value
Publication number	US-12530921-B2
Application number	US-202318104580-A
Country	US
Kind code	B2
Filing date	Feb 1, 2023
Priority date	Mar 16, 2022
Publication date	Jan 20, 2026
Grant date	Jan 20, 2026

Abstract

A display device includes: a sub-pixel on a substrate and including a light emitting element; a photo-sensing pixel on the substrate and including a light-receiving element including a light-receiving layer configured to obtain a sensing signal corresponding to light emitted from the light emitting element; a touch sensor configured to obtain information about a touch input and including a conductive layer, wherein the conductive layer includes a hole area overlapping the light-receiving layer in a plan view.

First claim

What is claimed is:

1 . A display device comprising:
a sub-pixel on a substrate and including a light emitting element; a photo-sensing pixel on the substrate and including a light-receiving element including a light-receiving layer configured to obtain a sensing signal corresponding to light emitted from the light emitting element; a touch sensor configured to obtain information about a touch input and including a conductive layer, wherein the conductive layer includes a hole area overlapping the light-receiving layer in a plan view, wherein the conductive layer includes a protrusion adjacent to the hole area to define the hole area, wherein the conductive layer includes a first conductive layer and a second conductive layer, and wherein the protrusion extends from a portion of the second conductive layer, and overlaps the light-receiving layer without overlapping the first conductive layer in the plan view.

2 . The display device of claim 1 , wherein the sub-pixel includes an emission area from which the light is emitted from the light emitting element, and
wherein the photo-sensing pixel includes a light-receiving area configured to receive the light.

3 . The display device of claim 2 , wherein a portion of the conductive layer surrounds the emission area, and another portion of the conductive layer surrounds the light-receiving area.

4 . The display device of claim 2 , wherein the conductive layer surrounds a portion of the light-receiving area in the hole area in the plan view.

5 . The display device of claim 2 , wherein the conductive layer includes a first area and a second area,
wherein the first area of the conductive layer is adjacent to the hole area and surrounds at least a portion of the hole area, and wherein the second area of the conductive layer is spaced apart from the hole area.

6 . The display device of claim 5 , wherein the first area of the conductive layer has a first width and the second area of the conductive layer has a second width, and
wherein the first width is greater than the second width.

7 . The display device of claim 5 , wherein the conductive layer further includes a third area,
wherein the third area of the conductive layer is an area connecting adjacent second areas, and wherein the third area has a polygonal shape forming an opening area.

8 . The display device of claim 5 , wherein the conductive layer further includes a third area,
wherein the third area of the conductive layer is an area connecting adjacent second areas, and wherein the third area has a shape in which the adjacent second areas intersect each other without forming an opening area.

9 . The display device of claim 2 , wherein the hole area has a rectangular shape in the plan view.

10 . The display device of claim 2 , wherein the conductive layer is spaced apart from the emission area by a separation distance, and
wherein a diameter of the hole area is smaller than the separation distance.

11 . The display device of claim 10 , wherein the separation distance is 8.0 μm or more and 15 μm or less.

12 . The display device of claim 2 , wherein the sub-pixel includes a first sub-pixel configured to emit light of a first color, a second sub-pixel configured to emit light of a second color, and a third sub-pixel configured to emit light of a third color, and
wherein the light-receiving area is adjacent to an emission area of the first sub-pixel and an emission area of the third sub-pixel in a first direction, and is adjacent to an emission area of the second sub-pixel in a second direction different from the first direction.

13 . The display device of claim 1 , wherein the second conductive layer is more spaced apart from the substrate than the first conductive layer.

14 . The display device of claim 1 , wherein a diameter of the hole area is 7.5 μm or less.

15 . The display device of claim 1 , wherein the conductive layer is patterned by a wet etching process.

16 . The display device of claim 1 , wherein the light-receiving element includes at leasts one of a photo diode, a CMOS image sensor, a CCD camera, or a photo transistor.

17 . The display device of claim 1 , wherein the conductive layer forms a driving electrode and a receiving electrode of the touch sensor.

18 . An electronic device comprising the display device of claim 1 .

Assignees

• Samsung Display Co Ltd

Inventors

• Bae Kwang Soo
• Kim Gun Hee
• Lee Dae Young
• Choi Min Oh

Classifications

• G06F3/0445

  using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer · CPC title

• G09G2300/0861

  with additional control of the display period without amending the charge stored in a pixel memory, e.g. by means of additional select electrodes · CPC title

• G09G2300/0819

  used for counteracting undesired variations, e.g. feedback or autozeroing · CPC title

• G09G3/3233

  with pixel circuitry controlling the current through the light-emitting element · CPC title

• G09G2300/0842

  forming a memory circuit, e.g. a dynamic memory with one capacitor · CPC title