Conductive structure and method for manufacturing same

Patent metadata

Field	Value
Publication number	US-9766652-B2
Application number	US-201314419170-A
Country	US
Kind code	B2
Filing date	Aug 30, 2013
Priority date	Aug 31, 2012
Publication date	Sep 19, 2017
Grant date	Sep 19, 2017

Abstract

The present specification provides a conductive structure body comprising: a substrate; a conductive layer; at least one intermediate layer; and a darkening layer, and a method of manufacturing the same. The conductive structure body may prevent reflectance by the conductive layer without affecting conductivity of the conductive layer, and may improve a concealing property of the conductive layer by improving absorbance. Accordingly, a display panel having improved visibility may be developed by using the conductive structure body.

First claim

The invention claimed is:

1. A conductive structure body comprising:
a substrate;
a conductive layer;
at least one intermediate layer; and
a darkening layer,
wherein the conductive layer comprises copper, the intermediate layer and the darkening layer comprise an oxide of copper, and an atomic percent of copper in a total composition of the intermediate layer is 1.01 times to 1.62 times that of copper in a total composition of the darkening layer, or
wherein the conductive layer comprises aluminum, the intermediate layer comprises an oxynitride of aluminum in which an atomic percent of nitrogen in a total composition is more than 0% and less than 20%, and the darkening layer comprises an oxynitride of aluminum in which an atomic percent of nitrogen in a total composition is 20% or more and 45% or less.

2. The conductive structure body of claim 1 , wherein the conductive layer is provided between the substrate and the darkening layer, and the at least one intermediate layer is provided between the conductive layer and the darkening layer.

3. The conductive structure body of claim 1 , wherein the darkening layer is provided between the substrate and the conductive layer, and the at least one intermediate layer is provided between the conductive layer and the darkening layer.

4. The conductive structure body of claim 1 , wherein a total reflectance of the conductive structure body is 20% or less.

5. The conductive structure body of claim 1 , wherein an extinction coefficient k of the darkening layer is 0.2 or more and 2.5 or less.

6. The conductive structure body of claim 1 , wherein the conductive layer comprises one or more materials selected from the group consisting of a metal, a metal alloy, a metal oxide, and a metal nitride, and the material has a specific resistance from 1×10 −6 Ω·cm to 30×10 −6 Ω·cm.

7. The conductive structure body of claim 1 , wherein the darkening layer, the intermediate layer, and the conductive layer comprise the same metal.

8. The conductive structure body of claim 1 , wherein the conductive layer comprises copper, the intermediate layer comprises an oxide of copper in which an atomic percent ratio of copper:oxygen is 95:5 to 97:3, and the darkening layer comprises an oxide of copper in which an atomic percent ratio of copper:oxygen is 60:39 to 94:6.

9. The conductive structure body of claim 1 , wherein the conductive layer comprises copper, the intermediate layer and the darkening layer comprise an oxide of copper, and the intermediate layer has a gradient in which an atomic percent of copper in a total composition of the intermediate layer is decreased as the intermediate layer is adjacent to the darkening layer in a thickness direction, an average atomic percent ratio of copper:oxygen in the intermediate layer is 95:5 to 97:3, and an atomic percent ratio of copper:oxygen in the darkening layer is 60:39 to 94:6.

10. The conductive structure body of claim 1 , wherein a thickness of the intermediate layer is 5 nm to 50 nm.

11. The conductive structure body of claim 1 , wherein a thickness of the darkening layer is 20 nm to 150 nm.

12. The conductive structure body of claim 1 , wherein a thickness of the conductive layer is 0.01 μm to 10 μm.

13. The conductive structure body of claim 1 , wherein the darkening layer is provided on at least one surface of the conductive layer.

14. The conductive structure body of claim 1 , wherein the conductive layer, the intermediate layer, or the darkening layer is patterned.

15. The conductive structure body of claim 1 , wherein the conductive layer, the intermediate layer, and the darkening layer are patterned, and a line width of a pattern in the patterned conductive layer is 10 μm or less.

16. A touch screen panel comprising the conductive structure body of claim 1 .

17. A display device comprising the conductive structure body of claim 1 .

18. A solar cell comprising the conductive structure body of claim 1 .

19. A method for manufacturing a conductive structure body, the method comprising:
forming at least one intermediate layer on a conductive layer;
forming a darkening layer on the intermediate layer; and
laminating the conductive layer or the darkening layer and a substrate,
wherein the conductive layer comprises copper, the intermediate layer and the darkening layer comprise an oxide of copper, and an atomic percent of copper in a total composition of the intermediate layer is 1.01 times to 1.62 times that of copper in a total composition of the darkening layer, or
wherein the conductive layer comprises aluminum, the intermediate layer comprises an oxynitride of aluminum in which an atomic percent of nitrogen in a total composition is more than 0% and less than 20%, and the darkening layer comprises an oxynitride of aluminum in which an atomic percent of nitrogen in a total composition is 20% or more and 45% or less.

20. A method for manufacturing a conductive structure body, the method comprising:
forming a conductive layer on a substrate;
forming at least one intermediate layer on the conductive layer; and
forming a darkening layer on the intermediate layer,
wherein the conductive layer comprises copper, the intermediate layer and the darkening layer comprise an oxide of copper, and an atomic percent of copper in a total composition of the intermediate layer is 1.01 times to 1.62 times that of copper in a total composition of the darkening layer, or
wherein the conductive layer comprises aluminum, the intermediate layer comprises an oxynitride of aluminum in which an atomic percent of nitrogen in a total composition is more than 0% and less than 20%, and the darkening layer comprises an oxynitride of aluminum in which an atomic percent of nitrogen in a total composition is 20% or more and 45% or less.

21. The method of claim 19 , further comprising: separately or simultaneously patterning the conductive layer, the intermediate layer, and the darkening layer.

22. A method for manufacturing a conductive structure body, the method comprising:
forming a patterned conductive layer on a substrate;
forming at least one patterned intermediate layer on the patterned conductive layer; and
forming a patterned darkening layer on the patterned intermediate layer,
wherein the conductive layer comprises copper, the intermediate layer and the darkening layer comprise an oxide of copper, and an atomic percent of copper in a total composition of the intermediate layer is 1.01 times to 1.62 times that of copper in a total composition of the darkening layer, or
wherein the conductive layer comprises aluminum, the intermediate layer comprises an oxynitride of aluminum in which an atomic percent of nitrogen in a total composition is more than 0% and less than 20%, and the darkening layer comprises an oxynitride of aluminum in which an atomic percent of nitrogen in a total composition is 20% or more and 45% or less.

Assignees

• Lg Chemical Ltd

Inventors

• Lim Jin Hyong
• Jang Song Ho
• Kim Sujin
• Kim Ki-Hwan

Classifications

• B32B2457/208

  Touch screens · CPC title

• B32B2457/20

  Displays, e.g. liquid crystal displays, plasma displays · CPC title

• B32B2307/416

  Reflective · CPC title

• B32B2307/40

  having particular optical properties · CPC title

• B32B2307/202

  Conductive · CPC title