High infrared reflection coatings, thin film coating deposition methods and associated technologies

Patent metadata

Field	Value
Publication number	US-10442728-B2
Application number	US-201715581090-A
Country	US
Kind code	B2
Filing date	Apr 28, 2017
Priority date	Oct 11, 2005
Publication date	Oct 15, 2019
Grant date	Oct 15, 2019

Abstract

The invention provides low-emissivity coatings that are highly reflective of infrared radiation. The coating includes three infrared-reflection film regions, which may each comprise silver.

First claim

What is claimed is:

1. A first pane having opposed first and second major surfaces, the first pane being part of a multiple-pane insulating glazing unit that includes a second pane, wherein the multiple-pane insulating glazing unit has at least one between-pane space, wherein at least one of the first and second panes has a coated interior surface that is exposed to one of the at least one between-pane space of the multiple-pane insulating glazing unit, said coated interior surface bearing a low-emissivity coating that includes, from said interior surface outward:
a) a first transparent dielectric film region;
b) a first infrared-reflection film region;
c) a first blocker film region directly over and contiguous to the first infrared-reflection film region;
d) a second transparent dielectric film region;
e) a second infrared-reflection film region;
f) a second blocker film region directly over and contiguous to the second infrared-reflection film region;
g) a third transparent dielectric film region;
h) a third infrared-reflection film region;
i) a third blocker film region directly over and contiguous to the third infrared-reflection film region; and
j) a fourth transparent dielectric film region;
wherein the first, second, and third infrared-reflection film regions each comprise silver and have a thickness of between 50 angstroms and 300 angstroms, wherein the second infrared-reflection film region is thicker than the first infrared-reflection film region, wherein the second and third infrared-reflection film regions have a combined thickness of at least 325 angstroms, and wherein the first, second, and third blocker film regions each have a thickness in a range of 3 angstroms to 25 angstroms.

2. The first pane of claim 1 wherein the first, second, and third infrared-reflection film regions have a combined thickness of greater than 425 angstroms.

3. The first pane of claim 2 wherein the combined thickness of the first, second, and third infrared-reflection film regions is greater than 450 angstroms.

4. The first pane of claim 3 wherein the combined thickness of the first, second, and third infrared-reflection film regions is greater than 460 angstroms.

5. The first pane of claim 4 wherein the combined thickness of the first, second, and third infrared-reflection film regions is greater than 470 angstroms.

6. The first pane of claim 1 wherein each of the first, second, and third infrared-reflection film regions comprises silver, and wherein the thickness of each of the first, second, and third infrared-reflection film regions is between 100 angstroms and 250 angstroms.

7. The first pane of claim 1 wherein the thickness of at least one of the first, second, and third infrared-reflection film regions is greater than 175 angstroms.

8. The first pane of claim 1 wherein the combined thickness of the second infrared-reflection film region and the third infrared-reflection film region is at least 340 angstroms.

9. The first pane of claim 8 wherein the combined thickness of the second infrared-reflection film region and the third infrared-reflection film region is at least 355 angstroms.

10. The first pane of claim 1 wherein at least one of the first, second, third, and fourth transparent dielectric film regions comprises a film comprising zinc oxide.

11. The first pane of claim 10 wherein the film comprising zinc oxide comprises a mixture of zinc oxide and tin oxide.

12. The first pane of claim 1 wherein each of the first, second, third, and fourth transparent dielectric film regions comprises a film comprising zinc oxide.

13. The first pane of claim 12 wherein the film comprising zinc oxide comprises a mixture of zinc oxide and tin oxide.

Assignees

• Cardinal Cg Co

Inventors

• Hartig Klaus

Classifications

• C03C17/3644

  the metal being silver · CPC title

• Y10T428/31504

  Composite [nonstructural laminate] · CPC title

• Y10T428/2495

  Thickness [relative or absolute] · CPC title

• C03C17/3613 Primary

  Coatings of type glass/inorganic compound/metal/inorganic compound/metal/other · CPC title

• E06B2009/2417

  Light path control; means to control reflection · CPC title