Display device

Patent metadata

Field	Value
Publication number	US-9905629-B2
Application number	US-201615287583-A
Country	US
Kind code	B2
Filing date	Oct 6, 2016
Priority date	Apr 5, 2016
Publication date	Feb 27, 2018
Grant date	Feb 27, 2018

Abstract

A display device includes: a substrate; an insulating layer arranged above the substrate; a through portion configured to pass through the substrate and the insulating layer; a pixel array located above the insulating layer and including pixels each including a light-emitting element including a pixel electrode, an opposite electrode facing the pixel electrode, and an emission layer arranged between the pixel electrode and the opposite electrode, the pixels at least partially surrounding the through portion; and a pattern portion arranged between the through portion and the pixel array, wherein the pattern portion includes: a recess that is concave along a thickness direction of the insulating layer; and a cladding layer arranged above the insulating layer, configured to cover the recess, and including a material different from the insulating layer.

First claim

What is claimed is:

1. A display device comprising:
a substrate;
an insulating layer arranged above the substrate;
a through portion configured to pass through the substrate and the insulating layer;
a pixel array located above the insulating layer and comprising pixels each comprising a light-emitting element comprising a pixel electrode, an opposite electrode facing the pixel electrode, and an emission layer arranged between the pixel electrode and the opposite electrode, the pixels at least partially surrounding the through portion; and
a pattern portion arranged between the through portion and the pixel array,
wherein the pattern portion comprises:
a recess that is concave along a thickness direction of the insulating layer; and
a cladding layer arranged above the insulating layer, configured to cover the recess, and comprising a material different from the insulating layer.

2. The display device of claim 1 , wherein the substrate comprises a display area in which the pixel array is located and a non-display area adjacent to the display area, and
the non-display area comprises a first sub-non-display area at least partially surrounding an outer edge of the display area and a second sub-non-display area at least partially surrounding an outer edge of the through portion between the through portion and the display area.

3. The display device of claim 2 , wherein the pattern portion is arranged in the second sub-non-display area.

4. The display device of claim 1 , wherein the insulating layer comprises an inorganic layer.

5. The display device of claim 4 , further comprising a pixel circuit comprising a thin film transistor and a storage capacitor, and wherein the insulating layer comprises a plurality of inorganic insulating layers, and at least one of the plurality of inorganic insulating layers is arranged between electrodes of the thin film transistor or between electrodes of the storage capacitor to insulate the electrodes.

6. The display device of claim 1 , wherein the recess has a depth less than or corresponding to a thickness of the insulating layer.

7. The display device of claim 1 , wherein the cladding layer comprises an organic material.

8. The display device of claim 1 , wherein the light-emitting element further comprises at least one of a first functional layer arranged between the pixel electrode and the emission layer and a second functional layer arranged between the emission layer and the opposite electrode,
the cladding layer comprises at least one of a first material layer and a second material layer,
the first material layer comprises an insulating material, and
the second material layer comprises a same material as at least one of the at least one functional layer and the emission layer.

9. The display device of claim 8 , wherein the cladding layer comprises the first material layer, and
a portion of the first material layer is located inside the recess.

10. The display device of claim 8 , wherein the cladding layer comprises the second material layer, and
a portion of the second material layer is located inside the recess.

11. The display device of claim 10 , further comprising:
a metallic pattern located below the recess, an upper surface of the metallic pattern corresponding to a bottom surface of the recess.

12. The display device of claim 8 , wherein the cladding layer comprises a stacked body comprising the first material layer and the second material layer arranged above the first material layer.

13. The display device of claim 1 , wherein the through portion comprises a single closed curve.

14. The display device of claim 13 , wherein the recess has a ring shape surrounding the through portion and having a diameter greater than a diameter of the through portion.

15. The display device of claim 1 , wherein the through portion extends up to at least one edge of the display device.

16. The display device of claim 1 , further comprising:
a layer arranged above the cladding layer and comprising a same material as that of the opposite electrode.

17. The display device of claim 1 , further comprising:
an encapsulation layer configured to cover the pixel array.

18. The display device of claim 17 , wherein the encapsulation layer comprises an inorganic encapsulation layer and an organic encapsulation layer.

19. The display device of claim 18 , further comprising:
a dam arranged between the pattern portion and the pixel array,
an end of the organic encapsulation layer being located between the dam and the pixel array.

20. The display device of claim 18 , wherein the inorganic encapsulation layer extends toward the through portion and covers the pattern portion.

21. The display device of claim 20 , wherein the inorganic encapsulation layer directly contacts the insulating layer in a region between the through portion and the pattern portion.

22. The display device of claim 1 , wherein the insulating layer comprises an auxiliary recess corresponding to a region between the through portion and the pattern portion.

23. The display device of claim 1 , further comprising:
a step portion having an undercut shape and arranged between the through portion and the pixel array.

24. The display device of claim 23 , wherein the opposite electrode extends toward the through portion and is disconnected by the step portion.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Sunkwang
• Kang Kinyeng

Classifications

• H01L51/0096

  Electricity · mapped topic

• H01L27/3258

  Electricity · mapped topic

• H01L27/3276 Primary

  Electricity · mapped topic

• H01L27/124

  Electricity · mapped topic

• H01L51/5253

  Electricity · mapped topic