Organic light-emitting diode and method for manufacturing same

Patent metadata

Field	Value
Publication number	US-9876190-B2
Application number	US-201414891280-A
Country	US
Kind code	B2
Filing date	Aug 21, 2014
Priority date	Aug 21, 2013
Publication date	Jan 23, 2018
Grant date	Jan 23, 2018

Abstract

Provided are an organic light emitting diode and a method for preparing the same. In more detail, the organic light emitting diode includes a substrate; organic light emitting unit in which a first electrode, an organic material layer, and a second electrode are sequentially laminated on the substrate; and an encapsulation unit encapsulating an outside of the organic light emitting unit, in which the encapsulation unit includes a sealing layer contacting the outside of the organic light emitting unit, an insulating layer provided on the sealing layer, and a metal pattern layer provided between the sealing layer and the insulating layer.

First claim

The invention claimed is:

1. An organic light emitting diode, comprising:
a substrate;
an organic light emitting unit in which a first electrode, an organic material layer, and a second electrode are sequentially laminated on the substrate; and
an encapsulation unit encapsulating an outside of the organic light emitting unit,
wherein the encapsulation unit includes a sealing layer contacting the outside of the organic light emitting unit, an insulating layer provided on the sealing layer, and a metal pattern layer provided between the sealing layer and the insulating layer, and
the metal pattern layer includes a first metal pattern which electrically connects the first electrode and an external power supply, and a second metal pattern which electrically connects the second electrode and the external power supply,
wherein the first metal pattern and the second metal pattern are spaced apart and electrically isolated from each other.

2. The organic light emitting diode of claim 1 , wherein the metal pattern layer includes a third metal pattern, and the third metal pattern is provided on an emission area of the organic light emitting unit.

3. The organic light emitting diode of claim 2 , wherein based on an upper plan view of the organic light emitting diode, the area of the third metal pattern is the same as or larger than that of the emission area of the organic light emitting unit.

4. The organic light emitting diode of claim 2 , wherein the third metal pattern seals the upper portion and the side of the emission area of the organic light emitting unit.

5. The organic light emitting diode of claim 2 , wherein the first metal pattern and the second metal pattern, and the third metal pattern are spaced apart and electrically isolated from each other.

6. The organic light emitting diode of claim 1 , wherein the encapsulation unit includes at least one contact hole penetrating in a thickness direction.

7. The organic light emitting diode of claim 6 , wherein the contact hole is filled with a conductive material.

8. The organic light emitting diode of claim 7 , wherein the conductive material includes at least one of a conductive paste including one or more kinds selected from Ag, Au, Cu, Ni, Al, W, Co, Pd, and an alloy thereof; a conductive polymer including one or more kinds selected from polyacetylene, polyaniline, doped polyethylene, polypyrrole, polythiophene, conductive epoxy, a mixture thereof, and a copolymer thereof; and a mixture formed by adding a conductive ball to the conductive polymer.

9. The organic light emitting diode of claim 1 , wherein the sealing layer further includes a conductive ball which electrically connects the first electrode or the second electrode and the external power supply.

10. The organic light emitting diode of claim 1 , further comprising:
a first metal pad which is provided on an opposite surface to a surface with the metal pattern layer of the insulating layer and electrically connected with the first electrode.

11. The organic light emitting diode of claim 1 , further comprising:
a second metal pad which is provided on the opposite surface to a surface with the metal pattern layer of the insulating layer and electrically connected with the second electrode.

12. The organic light emitting diode of claim 1 , wherein the insulating layer includes polyimide.

13. The organic light emitting diode of claim 1 , wherein the organic light emitting diode is a flexible organic light emitting diode.

14. The organic light emitting diode of claim 1 , wherein: the organic light emitting diode includes two or more organic light emitting units on the substrate, and the encapsulation unit includes two or more metal pattern layers provided between one sealing layer and one insulating layer.

15. An illumination device including the organic light emitting diode of claim 1 .

16. A display device including the organic light emitting diode of claim 1 .

17. A method for preparing an organic light emitting diode, comprising:
forming an organic light emitting unit including a first electrode, an organic material layer, and a second electrode on a substrate in sequence; and
encapsulating an outside of the organic light emitting unit by an encapsulation unit including a sealing layer contacting the outside of the organic light emitting unit, an insulating layer provided on the sealing layer, and a metal pattern layer provided between the sealing layer and the insulating layer,
wherein the metal pattern layer includes a first metal pattern which electrically connects the first electrode and an external power supply, and a second metal pattern which electrically connects the second electrode and the external power supply, and
wherein the first metal pattern and the second metal pattern are spaced apart and electrically isolated from each other.

18. The method of claim 17 , wherein the metal pattern layer is formed by laminating a metal pattern on the insulating layer or depositing a metal layer on the insulating layer and then patterning.

19. The method of claim 17 , further comprising:
forming at least one contact hole penetrating in a thickness direction in the encapsulation unit.

20. A method for preparing an organic light emitting diode, comprising:
forming two or more organic light emitting units including a first electrode, an organic material layer, and a second electrode on one substrate;
forming two or more organic light emitting diodes including a substrate, an organic light emitting unit, and an encapsulation unit by simultaneously encapsulating the outsides of the two or more organic light emitting units by the encapsulation unit; and
dividing the two or more organic light emitting diodes into individual organic light emitting diodes,
wherein the encapsulation unit includes: a sealing layer contacting the outside of each of the two or more organic light emitting units; an insulating layer provided on the sealing layer;
and a metal pattern layer provided between the sealing layer and the insulating layer and including a first metal pattern which electrically connects the first electrode and an external power supply and a second metal pattern which electrically connects the second electrode and the external power supply, and
wherein the first metal pattern and the second metal pattern are spaced apart and electrically isolated from each other.

21. An encapsulation member, comprising:
a sealing layer, an insulating layer provided on the sealing layer, and a metal pattern layer provided between the sealing layer and the insulating layer,
wherein the encapsulation member includes at least one contact hole penetrating in a thickness direction, the encapsulation member includes a protective layer on at least one of an upper surface and a lower surface of the encapsulation member, and the metal pattern layer includes two or more metal patterns which are spaced apart and electrically isolated from each other.

22. An encapsulation member, comprising:
a sealing layer, an insulating layer provided on the sealing layer, and a metal pattern layer provided between the sealing layer and the insulating layer,
wherein the encapsulation member includes protective layers provided on an upper surface and a lower surface of the encapsulation member, any one of the protective layers provided on the upper surface and the lower surface of the encapsulation member, the insulating layer, the metal pattern layer, and the sealing layer are half-cut in a thickness dir

Assignees

• Lg Display Co Ltd

Inventors

• Oh Ducksu
• Kang Minsoo
• Mo Sung Ho

Classifications

• H01L2251/5338

  Electricity · mapped topic

• H01L51/004

  Electricity · mapped topic

• H01L51/0097

  Electricity · mapped topic

• H01L51/0023

  Electricity · mapped topic

• H01L27/3276

  Electricity · mapped topic