Display device

Patent metadata

Field	Value
Publication number	US-11216100-B2
Application number	US-202017085885-A
Country	US
Kind code	B2
Filing date	Oct 30, 2020
Priority date	Dec 12, 2019
Publication date	Jan 4, 2022
Grant date	Jan 4, 2022

Abstract

A display device, includes: a display unit that includes a first substrate, a second substrate facing the first substrate, and a sealant combining the first and second substrates with each other, the first substrate including an active area that displays an image and a peripheral area adjacent to the active area; and an input detection unit on the second substrate, wherein the input detection unit includes: a sensing electrode on the second substrate and corresponding to the active area; a sensing pad section on the second substrate and corresponding to the peripheral area, the sensing pad section including a plurality of sensing pads electrically connected to the sensing electrode; and a pattern section on the second substrate and corresponding to the peripheral area, the pattern section overlapping the sealant and including a plurality of conductive patterns in a floating state.

First claim

What is claimed is:

1. A display device, comprising:
a display unit that includes a first substrate, a second substrate facing the first substrate, and a sealant combining the first and second substrates with each other, the first substrate including an active area that displays an image and a peripheral area adjacent to the active area; and
an input detection unit on the second substrate,
wherein the input detection unit includes:
a sensing electrode on the second substrate and corresponding to the active area;
a sensing pad section on the second substrate and corresponding to the peripheral area, the sensing pad section including a plurality of sensing pads electrically connected to the sensing electrode; and
a pattern section on the second substrate and corresponding to the peripheral area, the pattern section overlapping the sealant and including a plurality of conductive patterns in a floating state.

2. The display device of claim 1 , wherein the first substrate further includes:
a pixel corresponding to the active area;
a first power line configured to supply the pixel with a first power voltage; and
a second power line configured to supply the pixel with a second power voltage.

3. The display device of claim 2 , wherein the pattern section partially overlaps the first power line, the second power line, and the sealant.

4. The display device of claim 2 , wherein the first substrate further includes an organic layer including an opening that partially exposes the first and second power lines,
wherein the opening overlaps the sealant.

5. The display device of claim 2 , wherein the first substrate further includes a signal line connected to the pixel,
wherein the signal line is on a different layer than the first and second power lines, and
wherein the pattern section partially overlaps the first power line, the second power line, the sealant, and the signal line.

6. The display device of claim 2 , wherein each of the conductive patterns includes:
a transparent conductive pattern including a transparent conductive material; and
a metal pattern including a metallic material.

7. The display device of claim 6 , wherein the pattern section is divided into a plurality of pattern regions that correspond to corresponding conductive patterns,
wherein each of the pattern regions includes:
an effective pattern region where a corresponding conductive pattern is located; and
an ineffective pattern region where the conductive pattern is not located.

8. The display device of claim 7 , wherein an area of the effective pattern region is greater than an area of the ineffective pattern region.

9. The display device of claim 8 , wherein the effective pattern region includes:
a first effective pattern region where the transparent conductive pattern is located; and
a second effective pattern region where the metal pattern is located,
wherein the first effective pattern region overlaps the second effective pattern region.

10. The display device of claim 9 , wherein the first effective pattern region has an area greater than an area of the second effective pattern region.

11. The display device of claim 9 , wherein on a location where the pattern section and the sealant overlap each other, an area ratio of the second effective pattern region to the pattern region has a value that is changed based on a first interval that is defined to refer to a distance between an end of the second power line and a center of the sealant.

12. The display device of claim 6 , wherein
the conductive patterns are arranged in a first direction and a second direction perpendicular to the first direction, and
the conductive patterns are formed in a zigzag pattern in one or more of the first and second directions.

13. The display device of claim 6 , wherein the input detection unit further includes:
a first insulating layer covering the metal pattern; and
a second insulating covering the transparent conductive pattern,
wherein the metal pattern is on the second substrate, and
wherein the transparent conductive pattern is on the first insulating layer.

14. The display device of claim 2 , wherein each of the conductive patterns includes a metal pattern including a metallic material.

15. The display device of claim 14 , wherein the pattern section is divided into a plurality of pattern regions that correspond to corresponding conductive patterns,
wherein each of the pattern regions includes:
an effective pattern region where the metal pattern is located; and
an ineffective pattern region where the metal pattern is not located.

16. The display device of claim 15 , wherein the effective pattern region has an area less than an area of the ineffective pattern region.

17. The display device of claim 15 , wherein
the conductive patterns are arranged in a first direction and a second direction perpendicular to the first direction, and
the conductive patterns are formed in a zigzag pattern in one or more of the first and second directions.

18. The display device of claim 2 , wherein, in the peripheral area, the first and second power lines partially overlap the sealant.

19. The display device of claim 1 , wherein the input detection unit further includes an electrostatic shield section between the sensing electrode and the pattern section.

20. The display device of claim 19 , wherein the electrostatic shield section includes an electrostatic shield pattern including a metallic material,
wherein the electrostatic shield pattern does not overlap the sealant.

Assignees

• Samsung Display Co Ltd

Inventors

• You Wonho
• Kim Do-Hoon

Classifications

• H10K59/8722

  Peripheral sealing arrangements, e.g. adhesives, sealants · CPC title

• H10K59/131

  Interconnections, e.g. wiring lines or terminals · CPC title

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title

• G06F3/04164 Primary

  Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads · 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