Silicon oxynitride protective coatings
First Claim
1. A coated article of the type having a coating comprising an infrared reflecting metal film between dielectric films over a surface of a substrate and a protective layer over the coating, the improvement comprising:
- wherein the protective layer is a sputter coated silicon oxynitride coating having the following formula
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Accused Products
Abstract
A layer for protecting an underlying functional coating stack for example a single silver layer or double silver layer Low-E coating stack includes silicon oxynitride or silicon aluminum oxynitride layer. The protective film may have a uniform composition throughout its thickness i.e. homogeneous protective layer, a constantly increasing or decreasing index of infraction throughout its thickness i.e. a graded protective layer, or a combination of all or some of the foregoing i.e. a non-homogeneous protective layer. The graded and non-homogeneous layers may have an outer surface of silicon nitride, silicon aluminum nitride, silicon dioxide, silicon oxynitride or silicon aluminum oxynitride. The protective layer of the invention may be the last layer deposited on the functional coating stack or may have a film deposited thereon.
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Citations
34 Claims
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1. A coated article of the type having a coating comprising an infrared reflecting metal film between dielectric films over a surface of a substrate and a protective layer over the coating, the improvement comprising:
wherein the protective layer is a sputter coated silicon oxynitride coating having the following formula - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A coated article of the type having a coating comprising an infrared reflecting metal film between dielectric films on a substrate and a protective layer over the coating, the improvement comprising:
wherein the protective layer is a sputter coated silicon oxynitride coating having the following formula - View Dependent Claims (10, 11, 12)
- 13. A coated article of the type having a functional sputter coated layer over a substrate and a protective layer having a first surface and an opposite surface defined as a second surface with the second surface facing and over the functional layer, the improvement comprising wherein the first surface of the protective layer is the outermost surface of the coated article and the protective layer has chemical and mechanical durability and is a graded layer.
- 14. A coated article of the type having a functional sputter coated layer over a substrate and a protective layer having a first surface and an opposite surface defined as a second surface with the second surface facing and over the functional layer, the improvement comprising wherein the first surface of the protective layer is the outermost surface of the coated article and the protective layer has chemical and mechanical durability, is a graded layer and is a silicon oxynitride layer having the following formula:
- 20. A coated article of the type having a functional sputter coated layer over a substrate and a protective layer having a first surface and an opposite surface defined as a second surface with the second surface facing and over the functional layer, the improvement comprising wherein the first surface is the outermost surface of the coated article and the protective layer having chemical and mechanical durability and is a non-homogeneous layer.
- 21. A coated article of the type having a functional sputter coated layer over a substrate and a protective layer having a first surface and an opposite surface defined as a second surface with the second surface facing and over the functional layer, the improvement comprising wherein the first surface is the outermost surface of the coated article and the protective layer has chemical and mechanical durability, is a non-homogeneous layer, and is a silicon oxynitride layer having the following formula:
- 27. A coated article of the type having a functional sputter coating over a substrate and a protective layer having a first surface and an opposite surface defined as a second surface with the second surface over the functional coating, the improvement comprising wherein the protective layer has chemical and mechanical durability and is a graded layer and an outer film on and in contact with the first surface of the protective layer.
- 31. A coated article of the type having a functional sputter coating on a substrate and a protective layer having a first surface and an opposite surface defined as a second surface with the second surface over the functional coating, the improvement comprising wherein the protective layer has chemical and mechanical durability and is a non-homogeneous layer and an outer film on and in contact with the first surface of the protective layer.
Specification