Display device

Patent metadata

Field	Value
Publication number	US-12501762-B2
Application number	US-202418653794-A
Country	US
Kind code	B2
Filing date	May 2, 2024
Priority date	Aug 1, 2023
Publication date	Dec 16, 2025
Grant date	Dec 16, 2025

Abstract

A display device includes: a data line; a pixel circuit connected to the data line; a light emitting element connected to the pixel circuit; a first connection electrode under the data line; a sensing circuit connected to the first connection electrode; a light receiving element connected to the sensing circuit; and a receive line under the first connection electrode and connected to the first connection electrode.

First claim

What is claimed is:

1 . A display device comprising:
a data line; a pixel circuit connected to the data line; a light emitting element connected to the pixel circuit; a first connection electrode under a layer at which the data line is located; a sensing circuit connected to the first connection electrode; a light receiving element connected to the sensing circuit; and a receive line under a layer at which the first connection electrode is located and connected to the first connection electrode.

2 . The display device of claim 1 , wherein the receive line is under the sensing circuit.

3 . The display device of claim 1 , further comprising
a lower metal layer under the pixel circuit, wherein the receive line is in a same layer as the lower metal layer.

4 . The display device of claim 3 , wherein the receive line is separated from the lower metal layer.

5 . The display device of claim 3 , wherein the pixel circuit includes:
a first transistor including a first electrode connected to a first power line, a second electrode connected to an anode of the light emitting element, and a control electrode connected to a first node; a second transistor including a first electrode connected to the data line, a second electrode connected to the first electrode of the first transistor, and a control electrode connected to a write scan line; and a capacitor connected to the first power line and the first node, and wherein the lower metal layer is under the first transistor.

6 . The display device of claim 1 , further comprising:
a (1-1)-th connection electrode on the pixel circuit; and a (2-1)-th connection electrode on the (1-1)-th connection electrode and connected to the (1-1)-th connection electrode, wherein the data line is on the (2-1)-th connection electrode and connected to the (2-1)-th connection electrode.

7 . The display device of claim 6 , wherein the first connection electrode is in a same layer as the (1-1)-th connection electrode.

8 . The display device of claim 6 , further comprising:
a first shielding electrode on the first connection electrode and overlapping a portion of the receive line in a plan view.

9 . The display device of claim 8 , wherein the first shielding electrode is in a same layer as the (2-1)-th connection electrode.

10 . The display device of claim 8 , further comprising:
a second shielding electrode on the first shielding electrode and overlapping a portion of the receive line in the plan view.

11 . The display device of claim 10 , wherein the second shielding electrode is in a same layer as the data line and adjacent to the data line.

12 . The display device of claim 10 , wherein the second shielding electrode is connected to the first shielding electrode.

13 . The display device of claim 10 , wherein the first and second shielding electrodes receive a constant voltage.

14 . The display device of claim 10 , further comprising:
a reset line connected to the sensing circuit and configured to receive a reset voltage.

15 . The display device of claim 14 , wherein the first and second shielding electrodes are connected to the reset line.

16 . The display device of claim 14 , wherein the reset line is in a same layer as the first connection electrode.

17 . The display device of claim 1 , further comprising:
a dummy electrode on the first connection electrode and connected to the first connection electrode.

18 . A display device comprising:
a data line; a pixel circuit connected to the data line; a light emitting element connected to the pixel circuit; a lower metal layer under the pixel circuit; a receive line in a same layer as the lower metal layer; a sensing circuit overlapping the receive line; and a light receiving element connected to the sensing circuit.

19 . The display device of claim 18 , further comprising:
a first shielding electrode on the receive line and overlapping a portion of the receive line in a plan view; and a second shielding electrode on the first shielding electrode and overlapping a portion of the receive line in the plan view.

20 . The display device of claim 19 , wherein the second shielding electrode is in a same layer as the data line,
wherein the first shielding electrode is under the data line, and wherein the first and second shielding electrodes are configured to receive a constant voltage.

21 . An electronic device comprising a display device for providing images:
wherein the display device comprises: a data line; a pixel circuit connected to the data line; a light emitting element connected to the pixel circuit; a first connection electrode under a layer at which the data line is located; a sensing circuit connected to the first connection electrode; a light receiving element connected to the sensing circuit; and a receive line under a layer at which the first connection electrode is located and connected to the first connection electrode.

Assignees

• Samsung Display Co Ltd

Inventors

• Son Sunkwun
• Shin Dong Hee

Classifications

• G09G2300/0413

  Details of dummy pixels or dummy lines in flat panels · CPC title

• G09G2300/0426

  Layout of electrodes and connections · CPC title

• G06V40/1318

  using electro-optical elements or layers, e.g. electroluminescent sensing · CPC title

• G09G2354/00

  Aspects of interface with display user · CPC title

• G09G2360/14

  Detecting light within display terminals, e.g. using a single or a plurality of photosensors · CPC title