Light emitting device, electrode structure and manufacturing method thereof

Patent metadata

Field	Value
Publication number	US-9680123-B2
Application number	US-201514953430-A
Country	US
Kind code	B2
Filing date	Nov 30, 2015
Priority date	Dec 11, 2014
Publication date	Jun 13, 2017
Grant date	Jun 13, 2017

Abstract

A light emitting device including a substrate, a first electrode structure, an organic light emitting structure and a second electrode structure is provided. The first electrode structure includes a first transparent conductive layer, a patterned conductive layer and a second transparent conductive layer disposed on the substrate in sequence, so that the patterned conductive layer is interposed between the second transparent conductive layer and the first transparent conductive layer in a thickness direction of the substrate. The organic light emitting structure and the second electrode structure are disposed on the substrate, and the organic light emitting structure is located between the first electrode structure and the second electrode structure in the thickness direction of the substrate. An electrode structure and a manufacturing method thereof are also provided.

First claim

What is claimed is:

1. A light emitting device, comprising:
a substrate;
a first electrode layer disposed on the substrate, the first electrode layer further including:
a first transparent conductive layer, disposed on the substrate;
a patterned conductive layer, disposed on the first transparent conductive layer; and
a second transparent conductive layer, disposed on the patterned conductive layer and the first transparent conductive layer, wherein the patterned conductive layer is interposed between the second transparent conductive layer and the first transparent conductive layer in a thickness direction of the substrate;

an organic light emitting layer, disposed on the substrate; and
a second electrode layer, disposed on the substrate, and the organic light emitting layer is between the first electrode layer and the second electrode layer in the thickness direction of the substrate.

2. The light emitting device according to claim 1 , wherein the second transparent conductive layer contacts the first transparent conductive layer.

3. The light emitting device according to claim 1 , wherein the patterned conductive layer further includes a plurality of linear patterns and the plurality of linear patterns define at least one opening, and the second transparent conductive layer contacts the first transparent conductive layer via the at least one opening.

4. The light emitting device according to claim 3 , wherein a cross section of each of the plurality of linear patterns in the thickness direction of the substrate includes a top portion and two lateral portions, and the two lateral portions connect respectively to two opposite sides of the top portion at two arc angles or two closed angles.

5. The light emitting device according to claim 1 , wherein a thickness of the second transparent conductive layer in the thickness direction of the substrate is less than or equal to that of the first transparent conductive layer in the thickness direction of the substrate.

6. The light emitting device according to claim 1 , wherein the patterned conductive layer is covered by the second transparent conductive layer.

7. The light emitting device according to claim 1 , wherein a surface roughness of a first outer surface of the second transparent conductive layer is smaller than that of a second outer surface of the patterned conductive layer, and both the first and the second outer surfaces are opposite to the substrate.

8. The light emitting device according to claim 1 , wherein the first electrode layer further includes an insulator layer, and the insulator layer is disposed between the patterned conductive layer and the second transparent conductive layer.

9. The light emitting device according to claim 1 , wherein the first electrode layer further includes an insulator layer, and the insulator layer is interposed between the second transparent conductive layer and the organic light emitting layer.

10. An electrode structure, adapted to dispose on a substrate, comprising: a first transparent conductive layer, disposed on the substrate; a patterned conductive layer disposed on the first transparent conductive layer, wherein a cross section of patterns of the patterned conductive layer in the thickness direction of the substrate includes a top portion and two lateral portions, and the two lateral portions connect respectively to two opposite sides of the top portion at two arc obtuse angles or two closed obtuse angles; and a second transparent conductive layer, disposed on the patterned conductive layer and the first transparent conductive layer, wherein the patterned conductive layer is interposed between the second transparent conductive layer and the first transparent conductive layer in a thickness direction of the substrate.

11. The electrode structure according to claim 10 , wherein the second transparent conductive layer contacts the first transparent conductive layer.

12. The electrode structure according to claim 10 , wherein the patterns of the patterned conductive layer further includes a plurality of linear patterns define at least one opening, and the second transparent conductive layer contacts the first transparent conductive layer via the at least one opening.

13. The electrode structure according to claim 10 , wherein a thickness of the second transparent conductive layer in the thickness direction of the substrate is less than or equal to that of the first transparent conductive layer in the thickness direction of the substrate.

14. The electrode structure according to claim 10 , wherein the patterned conductive layer is covered by the second transparent conductive layer.

15. The electrode structure according to claim 10 , wherein a surface roughness of a first outer surface of the second transparent conductive layer is smaller than that of a second outer surface of the patterned conductive layer, and both the first and the second outer surfaces are opposite to the substrate.

16. The electrode structure according to claim 10 , further including an insulator layer, wherein the insulator layer is disposed between the patterned conductive layer and the second transparent conductive layer.

17. The electrode structure according to claim 10 , further including an insulator layer, wherein the insulator layer is interposed between the second transparent conductive layer and an organic light emitting layer.

18. A manufacturing method of an electrode structure, comprising: forming a first transparent conductive layer on a substrate; forming a patterned conductive layer on the first transparent conductive layer, wherein the patterned conductive layer is formed by applying a printing process, wherein a cross section of patterns of the patterned conductive layer in the thickness direction of the substrate includes a top portion and two lateral portions, and the two lateral portions connect respectively to two opposite sides of the top portion at two arc obtuse angles or two closed obtuse angles; and forming a second transparent conductive layer on the patterned conductive layer and the first transparent conductive layer, wherein the patterned conductive layer is interposed between the second transparent conductive layer and the first transparent conductive layer in a thickness direction of the substrate.

19. The manufacturing method according to claim 18 , wherein the step of forming the patterns of the patterned conductive layer on the first transparent forming a plurality of linear patterns on the first transparent conductive layer, wherein the plurality of linear patterns define at least one opening and the second transparent conductive layer contacts the first transparent conductive layer via the at least one opening.

20. The manufacturing method according to claim 18 , further including forming an insulator layer on the patterned conductive layer, wherein the step of forming the insulator layer on the patterned conductive layer is before the step of forming the second transparent conductive layer on the patterned conductive layer and the first transparent conductive layer.

21. The manufacturing method according to claim 18 , further including forming an insulator layer on the patterned conductive layer, wherein the step of forming the insulator layer on the patterned conductive layer is after the step of forming the second transparent conductive layer on the patterned conductive layer and the first transparent conductive layer.

Assignees

• Ind Tech Res Inst

Inventors

• Chen Chang-Ying
• Yen Hsi-Hsuan
• Liu Chun-Ting

Classifications

• H10K59/80516 Primary

  combined with auxiliary electrodes, e.g. ITO layer combined with metal lines · CPC title

• H10K50/814

  combined with auxiliary electrodes, e.g. ITO layer combined with metal lines · CPC title

• H10K59/80517 Primary

  Multilayers, e.g. transparent multilayers · CPC title

• H01L51/56

  Electricity · mapped topic

• H01L51/5212 Primary

  Electricity · mapped topic