Display device having a bending area

Patent metadata

Field	Value
Publication number	US-12200994-B2
Application number	US-202217660780-A
Country	US
Kind code	B2
Filing date	Apr 26, 2022
Priority date	Mar 31, 2016
Publication date	Jan 14, 2025
Grant date	Jan 14, 2025

Abstract

A display device includes a substrate including a bending area located between a first area and a second area. The substrate is bent in relation to a bending axis. A first wiring unit including a plurality of first wirings is arranged on the substrate to sequentially extend over the first area, the bending area, and the second area. First central axes included in each of the plurality of first wirings are spaced apart from each other by a first pitch in the bending area. A second wiring unit including a plurality of second wirings is arranged on the substrate to sequentially extend over the first area, the bending area, and the second area. Second central axes included in each of the plurality of second wirings are spaced apart from each other by a second pitch greater than the first pitch in the bending area.

First claim

What is claimed is:

1. A display device comprising:
a substrate including a bending area in which the substrate is bent, a first area and a second area, and the bending area is located between the first area and the second area;
a data signal wiring unit comprising a plurality of data wirings arranged across the bending area of the substrate; and
a power supply wiring unit comprising a plurality of power wirings arranged across the bending area of the substrate,
wherein each of the plurality of data wirings is a single wiring in the bending area, and
wherein each of the plurality of power wirings includes a plurality of sub wirings that extend in parallel to one another in at least a portion of the bending area.

2. The display device of claim 1 , wherein the plurality of data wirings are spaced apart from each other by a first distance, and the plurality of sub wirings are spaced apart from each other by a second distance that is substantially the same as the first distance.

3. The display device of claim 1 , wherein each of the plurality of power wirings comprises a first sub wiring and a second sub wiring that are spaced apart from each other by a second distance in the bending area, and the first sub wiring and the second sub wiring are electrically connected to each other.

4. The display device of claim 3 , wherein each of the plurality of power wirings further comprises a third sub wiring spaced apart from the second sub wiring by the second distance, and
wherein the second sub wiring and the third sub wiring are electrically connected to each other.

5. The display device of claim 1 , wherein the plurality of sub wirings arranged in the bending area are spaced apart from each other by substantially the same distance.

6. The display device of claim 1 , further comprising:
a display disposed over the substrate;
a driver disposed around the display and configured to drive the display; and
a pad unit located over the second area of the substrate,
wherein the data signal wiring unit is configured to supply power to the driver or the display, and
wherein the power supply wiring unit configured to provide a data signal to the display.

7. The display device of claim 1 , wherein the plurality of data wirings and the plurality of sub wirings are substantially parallel with each other in bending area.

8. The display device of claim 1 , wherein the plurality of data wirings and the plurality of sub wirings extend in a direction crossing the bending axis.

9. The display device of claim 1 , wherein first central axes in each of the plurality of data wirings are spaced apart from each other by a first pitch in the bending area, and
wherein second central axes in each of the plurality of power wirings are spaced apart from each other by a second pitch different from the first pitch.

10. The display device of claim 9 , wherein the second pitch is greater than the first pitch in the bending area.

11. The display device of claim 9 , wherein the plurality of respective second central axes of the plurality of power wirings are spaced apart from each other by a pitch less than the second pitch in the first area and the second area.

12. The display device of claim 1 , wherein resistance of each of the plurality of power wirings is less than resistance of each of the plurality of data wirings.

13. The display device of claim 1 ,
wherein each of the plurality of sub wirings comprises a first conductive layer and a second conductive layer,
wherein the first conductive layer is positioned over the bending area and extends to the first area and the second area,
wherein the second conductive layer is disposed in the first area and the second area, and
wherein the first conductive layer and the second conductive layer are electrically connected to each other via contact holes in the first area and the second area.

14. The display device of claim 13 , the display device further comprising:
a thin film transistor including a source electrode, a drain electrode, and a gate electrode,
wherein the second conductive layer comprises a same material as the source electrode or the drain electrode and d the second conductive layer comprises a same material as the gate electrode.

15. The display device of claim 13 , the display, device further comprising:
an organic insulating layer disposed over the bending area, the first area, and the second area to cover the first conductive layer.

16. The display device of claim 13 , the display device further comprising:
an inorganic insulating layer disposed over the substrate and having an aperture corresponding to the bending area.

17. The display device of claim 16 , the display device further comprising:
an organic layer disposed between the first conductive layer and the second conductive layer.

18. The display device of claim 16 , the display device further comprising:
an organic layer disposed between the first conductive layer and the substrate in the bending area.

19. The display device of claim 18 , wherein the organic layer is disposed to cover the aperture.

20. The display device of claim 16 , wherein the aperture exposes at least a portion of the substrate, and the organic layer is in contact with at least a portion of the substrate exposed by the aperture.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Yangwan
• Kwon Sunja
• Kim Byungsun
• Park Hyunae
• Lee Sujin
• Lee Jaeyong

Classifications

• H10K59/131 Primary

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

• H10K59/80

  Constructional details · CPC title

• H10K59/1315 Primary

  comprising structures specially adapted for lowering the resistance · CPC title

• G02F1/1345 Primary

  Conductors connecting electrodes to cell terminals · CPC title

• H10D86/441 Primary

  Interconnections, e.g. scanning lines · CPC title