Coated article with low-E coating including zinc oxide inclusive layer(s) with additional metal(s)

• US 9,725,358 B2
• Filed: 09/16/2016
• Issued: 08/08/2017
• Est. Priority Date: 11/19/2012
• Status: Expired due to Fees

• Current Assignee: Guardian Glass LLC (KOCH Industries Incorporated)
• Original Assignee: Guardian Industries Corporation (KOCH Industries Incorporated)
• Inventors: Imran, Muhammad, Lemmer, Jean-Marc, Frank, Marcus, Boyce, Brent, Xu, Yongli
• Primary Examiner(s): COLGAN, LAUREN ROBINSON
• Application Number:
  US15/267,288
• Publication Number:
  US 20170044054A1
• Time in Patent Office: 326 Days
• Field of Search: 428428, 428432, 428433, 428434, 428688, 428689, 428697, 428699, 428701, 428702
• CPC Class Codes: C03C 17/3429 at least one of the coatings being a non-oxide coating
• CPC Class Codes: C03C 17/3435 comprising a nitride, oxynitride, boronitride or carbonitride
• CPC Class Codes: C03C 17/3626 one layer at least containing a nitride, oxynitride, boronitride or carbonitride
• CPC Class Codes: C03C 17/3639 Multilayers containing at least two functional metal layers
• CPC Class Codes: C03C 17/3644 the metal being silver
• CPC Class Codes: C03C 17/3652 the coating stack containing at least one sacrificial layer to protect the metal from oxidation
• CPC Class Codes: C03C 17/366 Low-emissivity or solar control coatings
• CPC Class Codes: C03C 17/3681 the multilayer coating being used in glazing, e.g. windows or windscreens
• CPC Class Codes: C03C 2217/216 ZnO
• CPC Class Codes: C03C 2217/22 ZrO2
• CPC Class Codes: C03C 2217/228 Other specific oxides
• CPC Class Codes: C03C 2217/24 Doped oxides
• CPC Class Codes: C03C 2217/256 Ag
• CPC Class Codes: C03C 2217/281 Nitrides

Abstract

A coated article includes a coating, such as a low emissivity (low-E) coating, supported by a substrate (e.g., glass substrate). The coating includes at least one dielectric layer including zinc oxide that is doped with another metal(s). The coating may also include one or more infrared (IR) reflecting layer(s) of or including material such as silver or the like, for reflecting at least some IR radiation. In certain example embodiments, the coated article may be heat treated (e.g., thermally tempered, heat bent and/or heat strengthened). Coated articles according to certain example embodiments of this invention may be used in the context of windows, including monolithic windows for buildings, IG windows for buildings, etc.

Claims

1. A coated article including a low-E coating on a glass substrate, the coating comprising:

first and second infrared (IR) reflecting layers comprising silver on the glass substrate;

a contact layer over and directly contacting the first IR reflecting layer;

a dielectric stack provided between the first and second IR reflecting layers comprising silver, and provided over the contact layer;

wherein the dielectric stack between the IR reflecting layers comprising silver comprises first and second dielectric layers each comprising an oxide of Zn and Cu;

wherein a layer comprising silicon nitride is located between and contacting the first and second layers comprising an oxide of Zn and Cu; and

another contact layer comprising zinc oxide located under and directly contacting the second IR reflecting layer.

2. The coated article of claim 1, wherein one of said dielectric layers comprising an oxide of Zn and Cu directly contacts said another contact layer comprising zinc oxide.

3. The coated article of claim 1, wherein the coated article has a visible transmission of at least 30%.

4. The coated article of claim 1, wherein the coated article has a visible transmission of at least 50%.

5. The coated article of claim 1, wherein the first and second dielectric layers are substantially fully oxided and/or fully oxided.

6. The coated article of claim 1, wherein the coating has a sheet resistance of no greater than 5 ohms/square.

7. The coated article of claim 1, wherein the coated article is heat treated.

8. The coated article of claim 1, wherein the coated article is heat treated and has a glass side reflective Δ

E* value of no greater than 5.0 due to the heat treatment.