Method for manufacturing transparent electrode, transparent electrode, and organic electroluminescence device provided with the same

Patent metadata

Field	Value
Publication number	US-2016164022-A1
Application number	US-201615017091-A
Country	US
Kind code	A1
Filing date	Feb 5, 2016
Priority date	Aug 19, 2013
Publication date	Jun 9, 2016
Grant date	—

Abstract

A transparent electrode includes a transparent substrate, a thin wire structure partially covering a surface of the transparent substrate and formed of a conductive material, and a transparent conductive layer formed on the transparent substrate to cover the thin wire structure. The transparent conductive layer is formed of two or more separately prepared layers.

First claim

What is claimed is:

1 . A transparent electrode, comprising:
a transparent substrate; a wire structure which partially covers a surface of the transparent substrate and comprises a conductive material; and a transparent conductive layer formed on the transparent substrate and covering the wire structure, wherein the transparent conductive layer includes a plurality of layers.

2 . The transparent electrode according to claim 1 , wherein the plurality of layers of the transparent conductive layer is formed such that at least a portion of an interface that separates the layers from one another is positioned lower than a topmost portion of the wire structure in a region except for a wire structure-forming region that is a region for forming the wire structure.

3 . The transparent electrode according to claim 1 , wherein when viewed from a direction parallel to the transparent substrate, an interface that separates layers of the transparent conductive layer from one another has convexities in a wire structure-forming region that is a region for forming the wire structure, and concavities in a region except for the wire structure-forming region.

4 . The transparent electrode according to claim 1 , wherein the transparent conductive layer includes polythiophene, a polythiophene derivative, or a mixture of polythiophene and a polythiophene derivative.

5 . The transparent electrode according to claim 1 , wherein the transparent conductive layer includes polyaniline, a polyaniline derivative, or a mixture of polyaniline and a polyaniline derivative.

6 . An organic electroluminescent device, comprising:
the transparent electrode according to claim 1 .

7 . A method for manufacturing the transparent electrode according to claim 1 , comprising:
forming the transparent conductive layer, which includes
coating a solution that includes a material for the transparent conductive layer onto a transparent electrode-forming region on the transparent substrate on which the wire structure is formed, and
re-coating the solution, at least one time, onto the transparent electrode-forming region to which the solution has been coated.

8 . The method according to claim 7 , wherein the forming of the transparent conductive layer includes drying the solution coated onto the transparent electrode-forming region such that a film is formed to be a portion of the transparent conductive layer, and the drying is performed prior to a final coating of the solution.

9 . The method according to claim 7 , wherein the coating includes entirely coating the solution over an entire surface of the transparent electrode-forming region, and the re-coating includes partially coating the solution onto a region except for a wire structure-forming region where the wire structure is formed in the transparent electrode-forming region.

10 . The method according to claim 7 , wherein the coating includes partially coating the solution onto a region except for a wire structure-forming region where the wire structure is formed in the transparent electrode-forming region, and the re-coating includes entirely coating the solution over an entire surface of the transparent electrode-forming region.

11 . The method according to claim 8 , wherein the coating includes entirely coating the solution over an entire surface of the transparent electrode-forming region, and the re-coating includes partially coating the solution onto a region except for a wire structure-forming region where the wire structure is formed in the transparent electrode-forming region.

12 . The method according to claim 8 , wherein the coating includes partially coating the solution onto a region except for a wire structure-forming region where the wire structure is formed in the transparent electrode-forming region, and the re-coating includes entirely coating the solution over an entire surface of the transparent electrode-forming region.

13 . The method according to claim 10 , wherein the partially coating of the solution is performed first in the forming of the transparent conductive layer.

14 . The method according to claim 9 , wherein the partially coating of the solution is performed last in the forming of the transparent conductive layer.

15 . The method according to claim 9 , wherein the entirely coating and the partially coating are performed by different methods.

16 . The method according to claim 10 , wherein the entirely coating and the partially coating are performed by different methods.

17 . An organic electroluminescent device, comprising:
a transparent electrode manufactured by the method according to claim 7 .

Assignees

• Toppan Printing Co Ltd

Inventors

• Kizu Takashi
• Masuoka Hirokazu

Classifications

• H10K50/814

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

• H10F77/244 Primary

  made of transparent conductive layers, e.g. transparent conductive oxide [TCO] layers · CPC title

• H05K1/0274

  Optical details, e.g. printed circuits comprising integral optical means (H05K1/0269 takes precedence; coupling light guides with opto-electronic components G02B6/42) · CPC title

• H01L51/5212 Primary

  Electricity · mapped topic

• H01L51/5215

  Electricity · mapped topic