Coated article with IR reflecting layer(s) and method of making same

Patent metadata

Field	Value
Publication number	US-9371684-B2
Application number	US-201514801869-A
Country	US
Kind code	B2
Filing date	Jul 17, 2015
Priority date	Nov 5, 2004
Publication date	Jun 21, 2016
Grant date	Jun 21, 2016

Abstract

A coated article is provided with at least one infrared (IR) reflecting layer. The IR reflecting layer may be of silver or the like. In certain example embodiments, a titanium oxide layer is provided over the IR reflecting layer, and it has been found that this surprisingly results in an IR reflecting layer with a lower specific resistivity (SR) thereby permitting thermal properties of the coated article to be improved.

First claim

The invention claimed is:

1. A method of making a coated article, the method comprising:
providing a glass substrate;
forming a dielectric layer on the substrate;
forming an IR reflecting layer comprising silver on the substrate over at least the dielectric layer;
depositing a layer comprising titanium oxide on the substrate over the IR reflecting layer in a manner so that the layer comprising titanium oxide as deposited is more oxided at a location therein further from the IR reflecting layer than at a location closer to the IR reflecting layer.

2. The method of claim 1 , further comprising coupling the glass substrate with the recited layers thereon to another substrate in forming an IG window unit, wherein the IG window unit has a U-value of no greater than 1.15 W/(m 2 K).

3. The method of claim 1 , wherein the IR reflecting layer comprising silver has a specific resistivity (SR) of no greater than 4.6 micro-ohms.cm.

4. The method of claim 1 , further comprising forming a layer comprising an oxide of Ni and/or Cr that is located between and contacting the IR reflecting layer and the layer comprising titanium oxide.

5. The method of claim 1 , wherein said dielectric layer comprise zinc oxide.

6. The method of claim 1 , wherein said depositing comprises sputtering.

7. The method of claim 1 , wherein said forming the IR reflecting layer comprises sputtering the IR reflecting layer.

8. The method of claim 1 , further comprising forming a dielectric layer comprising titanium oxide directly on the glass substrate, so that said dielectric layer is located over said dielectric layer comprising titanium oxide.

9. The method of claim 8 , wherein said dielectric layer comprising titanium oxide comprises TiO 2 .

Assignees

• Guardian Industries
• Ct Luxembourgeois Rech Verre

Inventors

• Butz Jochen
• Kriltz Uwe
• Siwek Artur
• Dietrich Anton
• Muller Jens-Peter
• Lemmer Jean-Marc
• Blacker Richard

Classifications

• C03C17/3618

  Coatings of type glass/inorganic compound/other inorganic layers, at least one layer being metallic · CPC title

• C03C2218/154

  by sputtering · CPC title

• C03C17/3681

  the multilayer coating being used in glazing, e.g. windows or windscreens · CPC title

• C03C2217/78

  Coatings specially designed to be durable, e.g. scratch-resistant · CPC title

• B32B37/18

  involving the assembly of discrete sheets or panels only · CPC title