Organic light-emitting display apparatus and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-10985339-B2
Application number	US-201916589494-A
Country	US
Kind code	B2
Filing date	Oct 1, 2019
Priority date	Mar 10, 2017
Publication date	Apr 20, 2021
Grant date	Apr 20, 2021

Abstract

An organic light-emitting display (OLED) apparatus includes: a first electrode; a second electrode disposed separate from the first electrode; a pixel-defining layer covering an edge of the first electrode and an edge of the second electrode; a first organic functional layer disposed on the first electrode and the pixel-defining layer including a first emission layer; a first opposing electrode covering a top surface and enclosing an outer circumference of side surfaces of the first organic functional layer; a second organic functional layer disposed on the second electrode and the pixel-defining layer including a second emission layer; and a second opposing electrode covering a top surface and enclosing an outer circumference of side surfaces of the second organic functional layer. An area of the first opposing electrode in contact with the pixel-defining layer is greater than an area of the second opposing electrode in contact with the pixel-defining layer.

First claim

What is claimed is:

1. An organic light-emitting display (OLED) apparatus, comprising:
a first electrode;
a second electrode disposed separate from the first electrode;
a pixel-defining layer covering an edge of the first electrode and an edge of the second electrode;
a first organic functional layer disposed on the first electrode and the pixel-defining layer, the first organic functional layer comprising a first emission layer;
a first opposing electrode covering a top surface and enclosing an outer circumference of side surfaces of the first organic functional layer;
a second organic functional layer disposed on the second electrode and the pixel-defining layer, the second organic functional layer comprising a second emission layer; and
a second opposing electrode covering a top surface and enclosing an outer circumference of side surfaces of the second organic functional layer,
wherein an area of the first opposing electrode in contact with the pixel-defining layer is greater than an area of the second opposing electrode in contact with the pixel-defining layer.

2. The OLED apparatus of claim 1 , wherein a first color of light emitted from the first emission layer is different from a second color of light emitted from the second emission layer.

3. The OLED apparatus of claim 1 , wherein each of the first organic functional layer and the second organic functional layer comprises at least one layer selected from the group consisting of a hole injection layer, a hole transport layer, an electron injection layer, and an electron transport layer.

4. The OLED apparatus of claim 1 , wherein a thickness of a portion of the first opposing electrode covering the top surface of the first organic functional layer is as same as a thickness of a portion of the second opposing electrode covering the top surface of the second organic functional layer.

5. The OLED apparatus of claim 1 , wherein the pixel-defining layer comprises an insulating layer.

6. The OLED apparatus of claim 5 , wherein an edge of the first organic functional layer and an edge of the second organic functional layer are disposed on an inclined surface of the pixel-defining layer.

7. The OLED apparatus of claim 1 , further comprising a common electrode that is commonly and integrally disposed on the first opposing electrode and the second opposing electrode.

8. The OLED apparatus of claim 7 , wherein the common electrode covers side surfaces of the first opposing electrode and side surfaces of the second opposing electrode.

9. The OLED apparatus of claim 1 , further comprising:
a third electrode disposed separate from the first electrode and the second electrode;
a third organic functional layer disposed on the third electrode, the third organic functional layer comprising a third emission layer; and
a third opposing electrode covering a top surface and enclosing an outer circumference of side surfaces of the third organic functional layer,
wherein the pixel-defining layer further covers an edge of the third electrode, and
wherein an area of the second opposing electrode in contact with the pixel-defining layer is greater than an area of the third opposing electrode in contact with the pixel-defining layer.

10. The OLED apparatus of claim 9 , wherein a first color of light emitted from the first emission layer, a second color of light emitted from the second emission layer, and a third color of light emitted from the third emission layer are different from one another.

11. An organic light-emitting display (OLED) apparatus, comprising:
a first electrode;
a first organic functional layer disposed on the first electrode, the first organic functional layer comprising a first emission layer;
a first opposing electrode comprising a first conductive layer covering a top surface of the first organic functional layer, a second conductive layer surrounding side surfaces of the first organic functional layer, a third conductive layer surrounding side surfaces of the second conductive layer, and a fourth conductive layer surrounding side surfaces of the third conductive layer;
a second electrode disposed separate from the first electrode;
a second organic functional layer disposed on the second electrode, the second organic functional layer comprising a second emission layer; and
a second opposing electrode comprising a fifth conductive layer covering a top surface of the second organic functional layer, a sixth conductive layer surrounding side surfaces of the second organic functional layer, and a seventh conductive layer surrounding side surfaces of the sixth conductive layer.

12. The OLED apparatus of claim 11 , wherein, in a plan view, an area of the first opposing electrode is greater than an area of the second opposing electrode.

13. The OLED apparatus of claim 11 , wherein the material of the third conductive layer is the same as that of the sixth conductive layer.

14. The OLED apparatus of claim 11 , further comprising a pixel-defining layer comprising an insulating layer, the pixel-defining layer covering an edge of the first electrode and an edge of the second electrode.

15. The OLED apparatus of claim 14 , wherein an edge of the first organic functional layer and an edge of the second organic functional layer are disposed on an inclined surface of the pixel-defining layer.

16. The OLED apparatus of claim 11 , further comprising a common electrode that is commonly and integrally disposed on the first opposing electrode and the second opposing electrode.

17. The OLED apparatus of claim 16 , wherein the common electrode covers side surfaces of the first opposing electrode and side surfaces of the second opposing electrode.

18. The OLED apparatus of claim 11 , further comprising:
a third electrode disposed separate from the first electrode and the second electrode;
a third organic functional layer disposed on the third electrode, the third organic functional layer comprising a third emission layer; and
a third opposing electrode comprising an eighth conductive layer covering a top surface of the third organic functional layer, and a ninth conductive layer surrounding side surfaces of the third organic functional layer.

19. The OLED apparatus of claim 18 , wherein the material of the ninth conductive layer is the same as those of the forth conductive layer and the seventh conductive layer.

Assignees

• Samsung Display Co Ltd

Inventors

• Choi Shinil
• Yang Sunghoon

Classifications

• H10K59/80522

  combined with auxiliary electrodes · CPC title

• H10K59/80521

  characterised by their shape · CPC title

• H10K50/824

  combined with auxiliary electrodes · CPC title

• H10K59/35 Primary

  comprising red-green-blue [RGB] subpixels · CPC title

• H10K2102/351

  Thickness · CPC title