Display panel and electronic device including the same

Patent metadata

Field	Value
Publication number	US-11844232-B2
Application number	US-202117351430-A
Country	US
Kind code	B2
Filing date	Jun 18, 2021
Priority date	Nov 2, 2018
Publication date	Dec 12, 2023
Grant date	Dec 12, 2023

Abstract

A display panel includes a peripheral region adjacent to a display region. The display region includes a hole peripheral region, and a recessed region is overlapped with the hole peripheral region. The display panel also includes a barrier layer with a penetrating opening overlapped with the recessed region, a circuit layer on the barrier layer and including a transistor and insulating layers, and a device layer including an organic light emitting area coupled to the circuit layer. In addition, a module hole is overlapped with the hole peripheral region and penetrates the base substrate, and a first groove is overlapped with the hole peripheral region and corresponds to a portion of the base substrate that is recessed from a top surface of the barrier layer and that encloses the module hole. The insulating layers include inorganic layers and an organic layer having side portions enclosing the module hole.

First claim

What is claimed is:

1. A display panel including a hole, a display region and a hole peripheral region between the hole and the display region, comprising:
a base substrate including a first groove and a second groove both in the hole peripheral region, the second groove is between the hole and the first groove;
a barrier layer on the base substrate;
a transistor on the barrier layer;
a first electrode coupled to the transistor;
a light emitting layer on the first electrode;
a second electrode on the light emitting layer;
a first inorganic encapsulation layer on the second electrode;
an organic encapsulation layer on the first inorganic encapsulation layer;
a second inorganic encapsulation layer on the organic encapsulation layer; and
an first organic layer on the second inorganic encapsulation layer;
wherein the first inorganic encapsulation layer and the second inorganic encapsulation layer are in the second groove,
wherein the first inorganic encapsulation layer is in the first groove,
wherein the first organic layer is in the second groove.

2. The display panel of claim 1 , wherein the first groove is filled with the organic encapsulation layer.

3. The display panel of claim 1 , wherein the first organic layer and the second inorganic encapsulation layer define a same surface.

4. The display panel of claim 1 , wherein the hole is defined with penetrating the first organic, the first inorganic encapsulation layer, the second inorganic encapsulation layer, the barrier layer, and the base substrate.

5. The display panel of claim 1 , wherein the display panel further includes:
a circuit layer on the barrier layer, the circuit layer including the transistor and a plurality of insulating layers, the plurality of insulating layers includes a first inorganic layer, a second inorganic layer on the first inorganic layer, and a second organic layer,
wherein a side portion of each of the first inorganic layer and the second inorganic layer adjacent to the hole encloses the hole and is covered by the second organic layer.

6. The display panel of claim 1 , further comprising:
a dam between the first groove and the second groove, and the dam includes a first dam portion and a second dam portion sequentially stacked.

7. The display panel of claim 6 , further comprising:
an interlayer insulation layer between the transistor and the first electrode, the interlayer insulation layer covers the transistor; and
a pixel definition layer between the first electrode and the first inorganic encapsulation layer, the pixel definition layer includes an opening exposing the first electrode.

8. The display panel of claim 7 , wherein the first dam portion has a same material as the interlayer insulation layer, and
the second dam portion has a same material as the pixel definition layer.

9. The display panel of claim 1 , wherein:
a portion of the barrier layer, which covers a portion of the base substrate overlapped with the first groove and the second groove, corresponds to a tip portion, and
the tip portion overlapping the first groove is covered with the first inorganic encapsulation layer, and
the tip portion overlapping the second groove is covered with the first inorganic encapsulation layer and the second inorganic encapsulation layer.

10. The display panel of claim 9 , further comprising:
an inner pattern on the base substrate overlapping the first and second grooves and covered by the first inorganic encapsulation.

11. The display panel of claim 10 , wherein the inner pattern includes the same material as at least one of the light emitting layer and the second electrode.

12. The display panel of claim 9 , wherein at least one of the second electrode and the light emitting layer covers the tip portion.

13. The display panel of claim 12 , wherein the light emitting layer and the second electrode covering the tip portion are covered by the first inorganic encapsulation layer.

14. The display panel of claim 1 , further comprising: an input sensing unit on the second inorganic encapsulation layer, the input sensing unit includes a sensing electrode and a sensing insulating layer covering the sensing electrode.

15. The display panel of claim 1 , wherein: the first groove and the second groove have a closed loop shape enclosing the hole.

16. An electronic device including a hole, a display region and a hole peripheral region between the hole and the display region, comprising:
a base substrate including a front surface and a rear surface opposing each other, and a first groove and a second groove both in the hole peripheral region;
an electronic module disposed below the rear surface of the base substrate and overlapped with the hole;
a plurality of pixels on the display region of the base substrate;
a first inorganic encapsulation layer covering the pixels;
an organic encapsulation layer on the first inorganic encapsulation layer;
a second inorganic encapsulation layer on the organic encapsulation layer; and
an first organic layer overlapping the hole peripheral region and on the second inorganic encapsulation layer;
wherein the first inorganic encapsulation layer and the second inorganic encapsulation layer are in the second groove,
wherein the first inorganic encapsulation layer is in the first groove,
wherein the second groove is filled with the first organic layer.

17. The electronic device of claim 16 , wherein the first groove is filled with the organic encapsulation layer.

18. The electronic device of claim 16 , wherein each of the first groove and the second groove is defined with recessed in a direction from the front surface of the base substrate to the rear surface of the base substrate, and
wherein the hole is defined with penetrating the first organic, the first inorganic encapsulation layer, the second inorganic encapsulation layer, and the base substrate.

19. The electronic device of claim 16 , wherein each of the first groove and the second groove has a closed loop shape enclosing the hole, and the first groove surrounds the second groove.

20. The electronic device of claim 16 , wherein the electronic module includes at least one of a sound output module, a light-emitting module, a light-receiving module, and a camera module.

Assignees

• Samsung Display Co Ltd

Inventors

• Choi Wonwoo
• Kim Sooyoun
• Seo Junghan
• Sung Wooyong
• Lee Seoyeon
• Lee Hyoungsub
• Chang Moonwon
• Chae Seunggun

Classifications

• H10K59/805

  Electrodes · CPC title

• H10K59/8731 Primary

  multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers · CPC title

• H10K50/844 Primary

  Encapsulations · CPC title

• H10K59/122 Primary

  Pixel-defining structures or layers, e.g. banks · CPC title

• H10K59/40

  OLEDs integrated with touch screens · CPC title