Input sensing part and display device including the same

Patent metadata

Field	Value
Publication number	US-12416986-B2
Application number	US-202418422828-A
Country	US
Kind code	B2
Filing date	Jan 25, 2024
Priority date	Nov 26, 2021
Publication date	Sep 16, 2025
Grant date	Sep 16, 2025

Abstract

Disclosed is an input sensing part that includes sensing electrodes disposed in an active area, a first ground pattern disposed in an inactive area around the active area, a first ground pad disposed in the inactive area and electrically connected to the first ground pattern, a first antenna pattern insulated from the sensing electrodes and disposed in the active area, a first signal pad that extends from the first antenna pattern and disposed in the inactive area, a 1-1-th ground pad disposed adjacent to the first signal pad and electrically connected to the first ground pattern, and a 1-2-th ground pad disposed adjacent to the first signal pad.

First claim

What is claimed is:

1. An input sensing part comprising:
sensing electrodes disposed in an active area, the active area having a first side, a second side, and a third side connecting the first side and the second side;
a first ground pattern disposed in an inactive area around the active area, the first ground pattern traversing along an entirety of the first side of the active area;
a third ground pattern disposed in the inactive area, the first ground pattern traversing along the third side of the active area;
a first antenna pattern insulated from the sensing electrodes and disposed in the active area;
a first signal pad extending from the first antenna pattern and disposed in the inactive area;
a 1-1-th ground pad electrically connected to the first ground pattern; and
a 1-2-th ground pad electrically connected to the third ground pattern, wherein
the first signal pad is disposed between the 1-1-th ground pad and the 1-2-th ground pad.

2. The input sensing part of claim 1 , wherein the first antenna pattern is disposed between a number of the sensing electrodes.

3. The input sensing part of claim 1 , wherein the first ground pattern, the first signal pad, and the 1-1-th ground pad are disposed on a same layer.

4. The input sensing part of claim 3 , wherein the 1-1-th ground pad extends from the first ground pattern and is integral with the first ground pattern.

5. The input sensing part of claim 1 , further comprising:
a second ground pattern disposed in the inactive area, the second ground pattern traversing along an entirety of the second side of the active area, wherein
a portion of the first ground pattern extends along the third side of the active area,
a portion of the second ground pattern extends along the third side of the active area,
the third ground pattern is disposed between the first ground pattern and the second ground pattern along the third side of the active area,
the first signal pad is disposed directly between the first ground pattern and the third ground pattern, and
the first ground pattern, the second ground pattern, the third ground pattern, the 1-1-th ground pad, and the 1-2-th ground pad are disposed in a single layer.

6. The input sensing part of claim 5 , further comprising:
a second antenna pattern insulated from the sensing electrodes and disposed in the active area; and
a second signal pad extending from the second antenna pattern and disposed in the inactive area,
wherein the second signal pad is disposed between the second ground pattern and the third ground pattern.

7. The input sensing part of claim 6 , further comprising:
a 2-1-th ground pad electrically connected to the second ground pattern; and
a 2-2-th ground pad,
wherein the second signal pad is between the 2-1-th ground pad and the 2-2-th ground pad.

8. The input sensing part of claim 6 , wherein the 2-1-th ground pad extends from the second ground pattern and is integral with the second ground pattern.

9. The input sensing part of claim 7 , wherein the 1-2-th ground pad and the 2-2-th ground pad are electrically connected to the third ground pattern.

10. The input sensing part of claim 7 , wherein the 1-2-th ground pad and the 2-2-th ground pad extend from the third ground pattern and are integral with the third ground pattern.

11. The input sensing part of claim 7 , wherein
the 1-1-th ground pad, the 1-2-th ground pad, the 2-1-th ground pad, the 2-2-th ground pad, the first ground pattern, the second ground pattern, and the third ground pattern are disposed on different layers, and
the 1-1-th ground pad, the 1-2-th ground pad, the 2-1-th ground pad, and the 2-2-th ground pad are electrically connected to the first ground pattern, the second ground pattern, and the third ground pattern.

12. The input sensing part of claim 6 , wherein the second antenna pattern is disposed between a number of the sensing electrodes.

13. The input sensing part of claim 6 , wherein the second antenna pattern includes:
a 2-1-th antenna pattern disposed between a number of the sensing electrodes;
a 2-2-th antenna pattern disposed in at least one opening of at least one of the sensing electrodes; and
a bridge pattern electrically connecting the 2-1-th antenna pattern and the 2-2-th antenna pattern.

14. The input sensing part of claim 1 , further comprising:
dummy patterns disposed between the sensing electrodes and in openings of the sensing electrodes.

15. The input sensing part of claim 1 , further comprising:
a base layer including the active area and the inactive area in the base layer; and
a flexible circuit board disposed on the base layer and electrically connected to an end of the first ground pattern and the 1-1-th ground pad, wherein
the end of the first ground pattern and the 1-1-th ground pad are spaced apart from each other in a first direction,
a bending line extending in a second direction intersecting the first direction is defined between the end of the first ground pattern and the 1-1-th ground pad, and
the base layer and the flexible circuit board are bent along the bending line.

16. The input sensing part of claim 15 , further comprising:
at least one first connecting line disposed on the flexible circuit board and electrically connecting the end of the first ground pattern and the 1-1-th ground pad.

17. The input sensing part of claim 15 , further comprising:
at least one second connecting line disposed on the base layer and electrically connecting the end of the first ground pattern and the 1-1-th ground pad, the second connecting line having a wavy shape.

18. The input sensing part of claim 15 , further comprising:
at least one first connecting line disposed on the flexible circuit board and electrically connecting the end of the first ground pattern and the 1-1-th ground pad; and
at least one second connecting line disposed on the base layer and electrically connecting the end of the first ground pattern and the 1-1-th ground pad.

19. The input sensing part of claim 18 , further comprising:
dummy lines disposed near the at least one second connecting line.

20. The input sensing part of claim 19 , wherein the dummy lines are electrically connected to the first ground pattern.

21. A display device comprising:
a display panel; and
an input sensing part disposed on the display panel,
wherein the input sensing part includes:
sensing electrodes disposed in an active area, the active area having a first side, a second side, and a third side connecting the first side and the second side;
a first ground pattern disposed in an inactive area around the active area, the first ground pattern traversing along an entirety of the first side of the active area;
a first antenna pattern insulated from the sensing electrodes and disposed in the active area;
a third ground pattern disposed in the inactive area, the first ground pattern traversing along the third side of the active area:
a first signal pad extending from the first antenna pattern and disposed in the inactive area;
a 1-1-th ground pad electrically connected to the first ground pattern; and
a 1-2-th ground pad electrically connected to the third ground pattern, wherein
the first signal pad is disposed between the 1-1-th ground pad and the 1-2-th ground pad.

Assignees

• Samsung Display Co Ltd

Inventors

• Lee Hyun Jae
• Kim Sunghwan

Classifications

• H10K59/40

  OLEDs integrated with touch screens · CPC title

• H01Q1/48

  Earthing means; Earth screens; Counterpoises · CPC title

• G06F3/0448

  Details of the electrode shape, e.g. for enhancing the detection of touches, for generating specific electric field shapes, for enhancing display quality · CPC title

• G06F3/0446

  using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes · CPC title

• H01Q1/22

  by structural association with other equipment or articles · CPC title