Display device and method of manufacturing same

Patent metadata

Field	Value
Publication number	US-10672802-B2
Application number	US-201816056899-A
Country	US
Kind code	B2
Filing date	Aug 7, 2018
Priority date	Nov 30, 2017
Publication date	Jun 2, 2020
Grant date	Jun 2, 2020

Abstract

A display device includes a substrate including a first area, a second area, and a bent area therebetween, an inner wiring disposed in the first area, an outer wiring disposed in the second area, an inter-insulating layer which covers the inner wiring and the outer wiring and in which an opening corresponding to the bent area is defined, a first organic insulating layer, where a portion thereof is located in the opening, a connection wiring disposed on the first organic insulating layer and connecting the inner wiring to the outer wiring, a conductive layer disposed between the inter-insulating layer and the first organic insulating layer and electrically connected to one of the inner wiring and the outer wiring, and an inorganic protective layer which covers the conductive layer and in which an opening corresponding to the bent area is defined.

First claim

What is claimed is:

1. A display device comprising:
a substrate including a first area, a second area, and a bent area between the first and second areas;
an inner wiring disposed in the first area;
an outer wiring disposed in the second area;
an inter-insulating layer which covers the inner wiring and the outer wiring and in which an opening corresponding to the bent area is defined;
a first organic insulating layer, a portion of the first organic insulating layer being located in the opening;
a connection wiring disposed on the first organic insulating layer and connecting the inner wiring and the outer wiring;
a conductive layer disposed between the inter-insulating layer and the first organic insulating layer and electrically connected to one of the inner wiring and the outer wiring; and
an inorganic protective layer which covers the conductive layer and in which an opening corresponding to the bent area is defined.

2. The display device of claim 1 , wherein an upper surface of an end portion of the inter-insulating layer which is adjacent to the opening of the inter-insulating layer is covered by the inorganic protective layer.

3. The display device of claim 1 , further comprising:
a lower insulating layer which is disposed below the inner wiring such that the inner wiring is located between the lower insulating layer and the inter-insulating layer, and in which an opening corresponding to the bent area is defined.

4. The display device of claim 3 , wherein the lower insulating layer and the inter-insulating layer form a step difference in a region adjacent to the bent area.

5. The display device of claim 3 , wherein an end portion of the inorganic protective layer covers a lateral surface of the inter-insulating layer and an upper surface of the lower insulating layer in a region adjacent to the bent area.

6. The display device of claim 1 , wherein an end portion of the inorganic protective layer is covered by the first organic insulating layer in a region adjacent to the bent area.

7. The display device of claim 1 , wherein the first organic insulating layer directly contacts the substrate in the bent area.

8. The display device of claim 7 , wherein the substrate comprises:
a base layer and an inorganic barrier layer on the base layer,
the inorganic barrier layer in which an opening corresponding to the bent area is defined, and
the first organic insulating layer directly contacting the base layer.

9. The display device of claim 1 , wherein the first area comprises a display area including a plurality of pixels, and each pixel comprises a thin film transistor, a pixel electrode electrically connected to the thin film transistor, an opposite electrode facing the pixel electrode, and an intermediate layer between the pixel electrode and the opposite electrode, the intermediate layer including an emission layer.

10. The display device of claim 9 , further comprising:
a second organic insulating layer disposed between the connection wiring and the pixel electrode.

11. A display device comprising:
a display area including a thin film transistor on a substrate, and a display element including a pixel electrode, an intermediate layer, and an opposite electrode sequentially stacked;
a non-display area adjacent to the display area and including a bent area;
an inner wiring and an outer wiring mutually spaced apart from each other with the bent area therebetween;
an inter-insulating layer which is disposed on the inner wiring and the outer wiring and in which an opening corresponding to the bent area is defined;
a connection wiring electrically connecting the inner wiring to the outer wiring and passing across the bent area; and
a first organic insulating layer disposed in the display area and the non-display area, a portion of the first organic insulating layer being located in the opening of the inter-insulating layer,
wherein the connection wiring is disposed below the pixel electrode with an insulating layer therebetween.

12. The display device of claim 11 , further comprising:
a conductive layer disposed between the inner wiring and the connection wiring, and between the outer wiring and the connection wiring.

13. The display device of claim 12 , further comprising:
an inorganic protective layer which is disposed on the conductive layer and in which an opening corresponding to the bent area is defined.

14. The display device of claim 13 , wherein an end portion of the inorganic protective layer covers the inter-insulating layer and is covered by the first organic insulating layer in a region adjacent to the bent area.

15. The display device of claim 11 , further comprising:
a lower insulating layer which is disposed below the inner wiring such that the inner wiring is located between the lower insulating layer and the inter-insulating layer, and in which an opening corresponding to the bent area is defined.

16. The display device of claim 15 , wherein the substrate comprises a base layer and an inorganic barrier layer on the base layer, the lower insulating layer being the inorganic barrier layer.

17. The display device of claim 16 , wherein the first organic insulating layer directly contacts the base layer of the substrate.

18. The display device of claim 15 , wherein the inter-insulating layer and the lower insulating layer form a step difference.

19. The display device of claim 15 , wherein a width of the opening of the lower insulating layer is greater than a width of the bent area.

20. The display device of claim 15 , wherein a width of the opening of the inter-insulating layer is greater than a width of the opening of the lower insulating layer.

Assignees

• Samsung Display Co Ltd

Inventors

• Lee Jeongho
• Kim Yanghee
• Kim Wonho
• Park Soyeon
• Lee Keunsoo
• Lim Hyungchul

Classifications

• H01L27/1218

  Electricity · mapped topic

• H01L51/0097

  Electricity · mapped topic

• H01L27/1262

  Electricity · mapped topic

• H01L27/3276

  Electricity · mapped topic

• H01L27/3258

  Electricity · mapped topic