Alloy oxide overcoat indium tin oxide coatings, coated glazings, and production methods

Patent metadata

Field	Value
Publication number	US-12006249-B2
Application number	US-202117508057-A
Country	US
Kind code	B2
Filing date	Oct 22, 2021
Priority date	Jan 16, 2010
Publication date	Jun 11, 2024
Grant date	Jun 11, 2024

Abstract

The invention provides transparent conductive coatings based on indium tin oxide. The coating has an oxide overcoat, such as an alloy oxide overcoat. In some embodiments, the coating further includes one or more overcoat films comprising silicon nitride, silicon oxynitride, silicon dioxide, or titanium dioxide.

First claim

What is claimed is:

1. A multiple-pane insulating glazing unit having a between-pane space and two opposed external pane surfaces, a desired one of the two external pane surfaces bearing a coating comprising both an indium tin oxide film and an aluminum tin oxide film, the aluminum tin oxide film being located over the indium tin oxide film, the aluminum tin oxide film being in direct contact with the indium tin oxide film, wherein the aluminum tin oxide film is an exposed outermost film of the coating, and wherein the aluminum tin oxide film contains tin at a weight percent, on a metal-only basis, of from 50 to 90 percent.

2. The multiple-pane insulating glazing unit of claim 1 wherein the coating is devoid of a metal layer.

3. The multiple-pane insulating glazing unit of claim 1 wherein the aluminum tin oxide film is devoid of metals other than aluminum and tin.

4. The multiple-pane insulating glazing unit of claim 1 wherein the aluminum tin oxide film consists of aluminum tin oxide.

5. The multiple-pane insulating glazing unit of claim 1 wherein a thickness of the aluminum tin oxide film is between 300 angstroms and 900 angstroms.

6. The multiple-pane insulating glazing unit of claim 5 wherein a thickness of the indium tin oxide film is between 900 angstroms and 2,000 angstroms.

7. The multiple-pane insulating glazing unit of claim 1 wherein the indium tin oxide film is a suboxide while the aluminum tin oxide film is fully oxidized.

8. The multiple-pane insulating glazing unit of claim 1 wherein a thickness of the aluminum tin oxide film is in a range of 200 to 800 angstroms, and a thickness of the indium tin oxide film is in a range of 1,100 to 1,650 angstroms.

9. The multiple-pane insulating glazing unit of claim 1 wherein the aluminum tin oxide film has a composition produced by sputtering metallic aluminum tin targets in an atmosphere of argon and oxygen.

10. The multiple-pane insulating glazing unit of claim 1 wherein the coating is devoid of a silver layer.

11. The multiple-pane insulating glazing unit of claim 1 wherein the coating has a total thickness of less than 2,400 angstroms.

12. The multiple-pane insulating glazing unit of claim 1 wherein the aluminum tin oxide film comprises both oxidized aluminum and oxidized tin.

13. The multiple-pane insulating glazing unit of claim 1 further comprising a coating that has a metal layer and that is on a surface of the multiple-pane insulating glazing unit different from the desired one of the two external pane surfaces.

14. The multiple-pane insulating glazing unit of claim 1 further comprising a low-emissivity coating on a surface of the multiple-pane insulating glazing unit different from the desired one of the two external pane surfaces.

15. A multiple-pane insulating glazing unit having a between-pane space and two opposed external pane surfaces, a desired one of the two external pane surfaces bearing a coating comprising both an indium tin oxide film and an aluminum tin oxide film, the aluminum tin oxide film being located over the indium tin oxide film, the aluminum tin oxide film being in contact with the indium tin oxide film, and the aluminum tin oxide film is an exposed outermost film of the coating, wherein the aluminum tin oxide film contains tin at a weight percent, on a metal-only basis, of from 50 to 90 percent, wherein a thickness of the aluminum tin oxide film is in a range of 200 to 800 angstroms, and a thickness of the indium tin oxide film is in a range of 1,100 to 1,650 angstroms.

16. The multiple-pane insulating glazing unit of claim 15 wherein the coating is devoid of a metal layer.

17. The multiple-pane insulating glazing unit of claim 16 wherein the indium tin oxide film is a suboxide while the aluminum tin oxide film is fully oxidized.

18. The multiple-pane insulating glazing unit of claim 15 wherein the aluminum tin oxide film has a composition produced by sputtering metallic aluminum tin targets in an atmosphere of argon and oxygen.

19. The multiple-pane insulating glazing unit of claim 15 wherein the coating has a total thickness of less than 2,400 angstroms.

20. The multiple-pane insulating glazing unit of claim 15 wherein the aluminum tin oxide film comprises both oxidized aluminum and oxidized tin.

21. The multiple-pane insulating glazing unit of claim 15 further comprising a coating that has a metal layer and that is on a surface of the multiple-pane insulating glazing unit different from the desired one of the two external pane surfaces.

22. The multiple-pane insulating glazing unit of claim 15 further comprising a low-emissivity coating on a surface of the multiple-pane insulating glazing unit different from the desired one of the two external pane surfaces.

Assignees

• Cardinal Cg Co

Inventors

• Burrows Keith James
• Durst Stephen D
• Myli Kari B
• Pfaff Gary L

Classifications

• B32B17/10211

  Doped dielectric layer, electrically conductive, e.g. SnO2:F · CPC title

• B32B17/10174

  Coatings of a metallic or dielectric material on a constituent layer of glass or polymer · CPC title

• B32B7/025

  Electric or magnetic properties · CPC title

• C03C2217/231

  In2O3/SnO2 · CPC title

• C03C17/3435

  comprising a nitride, oxynitride, boronitride or carbonitride · CPC title