Display device having a bending area

Patent metadata

Field	Value
Publication number	US-10818746-B2
Application number	US-201916573601-A
Country	US
Kind code	B2
Filing date	Sep 17, 2019
Priority date	Mar 31, 2016
Publication date	Oct 27, 2020
Grant date	Oct 27, 2020

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, wherein the substrate is bent;
a first wiring unit comprising a plurality of first wirings arranged across the bending area of the substrate, wherein 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; and
a second wiring unit comprising a plurality of second wirings arranged across the bending area of the substrate, wherein second central axes included in each of the plurality of second wirings are spaced apart from each other by a second pitch different from the first pitch.

2. The display device of claim 1 , wherein the second pitch greater than the first pitch in the bending area.

3. The display device of claim 1 , wherein the substrate including a first area and a second area, and the bending area located between the first area and the second area.

4. The display device of claim 1 , further comprising:
a display disposed over the substrate; and
a driver disposed around the display and driving the display,
wherein the first wiring unit is a power supply wiring unit supplying power to the driver or the display.

5. The display device of claim 4 , wherein the second wiring unit is a data signal wiring unit providing a data signal to the display.

6. The display device of claim 1 , wherein the plurality of first wirings and the plurality of second wirings are substantially parallel with each other.

7. The display device of claim 1 , wherein the plurality of first wirings and the plurality of second wirings extend in a direction crossing the bending axis.

8. The display device of claim 1 , wherein the second pitch is n times as wide as the first pitch, wherein n≥2, and wherein n is a natural number.

9. The display device of claim 1 , wherein the second pitch is at least twice as wide as the first pitch.

10. The display device of claim 1 , wherein the plurality of respective second central axes of the plurality of second wirings are spaced apart from each other by a pitch narrower than the second pitch in the first area and the second area.

11. The display device of claim 10 , wherein the plurality of respective second central axes of the plurality of second wirings are spaced apart from each other by a pitch narrower than the second pitch in the first area and the second area.

12. The display device of claim 1 , wherein each of the plurality of first wirings has a first width, and each of the plurality of second wirings has a second width greater than the first width.

13. The display device of claim 12 , wherein facing edges of each of the plurality of first wirings are spaced apart from each other by a first distance, and facing edges of each of the plurality of second wirings are spaced apart from each other by a second distance that is substantially the same as the first distance.

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

15. The display device of claim 14 , wherein facing edges of each of the plurality of first wirings are spaced apart from each other by a first distance, and facing edges of each of the plurality of second wirings are spaced apart from each other by a second distance that is substantially the same as the first distance.

16. The display device of claim 14 , wherein each of the second wirings of the plurality of second wirings are symmetrical to each other with respect to each of the plurality of second central axes.

17. The display device of claim 14 , wherein the first sub wiring and the second sub wiring are connected in parallel to each other.

18. The display device of claim 14 , wherein each of the plurality of second wirings further comprises a third sub wiring spaced apart from the second sub wiring by a predetermined distance, and
wherein the second sub wiring and the third sub wiring are electrically connected to each other.

19. The display device of claim 1 , wherein resistance of each of the plurality of second wirings is lower than resistance of each of the plurality of first wirings.

20. The display device of claim 1 , further comprising a pad unit located over the second area of the substrate.

21. The display device of claim 4 , the display comprising a thin film transistor including a source electrode, a drain electrode, and a gate electrode,
wherein the second wiring unit comprises a first conductive layer in the bending area and a second conductive layer in the first area and the second area, and
wherein the second conductive layer comprises a same material as the source electrode or the drain electrode, and the second conductive layer comprises a same material as the gate electrode.

22. The display device of claim 21 , wherein the first conductive layer and the second conductive layer are electrically connected to each other via a contact hole.

23. The display device of claim 4 , the display comprising a thin film transistor disposed over the first area or the second area of the substrate and comprising a source electrode, a drain electrode, and a gate electrode,
wherein the first wiring unit comprises a third conductive layer over the first area, the bending area, and the second area, and
wherein the third conductive layer is over a same layer as the source electrode or the drain electrode.

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

  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