Coated article with low-E coating including tin oxide interlayer
First Claim
1. A coated article comprising a coating supported by a glass substrate, the coating comprising:
- a first dielectric layer;
a first infrared (IR) reflecting layer comprising silver located over at least the dielectric layer;
a first layer comprising silicon nitride located over at least the first IR reflecting layer and the first dielectric layer;
a first layer comprising tin oxide located over and contacting the first layer comprising silicon nitride;
a first layer comprising zinc oxide located over and contacting the first layer comprising tin oxide, so that the first layer comprising tin oxide is located between and contacting the first layer comprising silicon nitride and the first layer comprising zinc oxide;
a second IR reflecting layer comprising silver located over and contacting the first layer comprising zinc oxide;
a contact layer located over and contacting the second IR reflecting layer;
a second layer comprising zinc oxide located over and contacting the contact layer; and
at least another dielectric layer located over at least the second layer comprising zinc oxide.
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Accused Products
Abstract
A coated article is provided which may be heat treated (e.g., thermally tempered) in certain instances. In certain example embodiments, an interlayer of or including a metal oxide such as tin oxide is provided under an infrared (IR) reflecting layer so as to be located between respective layers comprising silicon nitride and zinc oxide. It has been found that the use of such a tin oxide inclusive interlayer results in significantly improved mechanical durability, thermal stability and/or haze characteristics. In certain example embodiments, a zinc oxide inclusive layer is provide over an IR reflecting layer in order to improve thermal stability. A zirconium oxide overcoat may also be provided in certain example instances.
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Citations
23 Claims
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1. A coated article comprising a coating supported by a glass substrate, the coating comprising:
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a first dielectric layer; a first infrared (IR) reflecting layer comprising silver located over at least the dielectric layer; a first layer comprising silicon nitride located over at least the first IR reflecting layer and the first dielectric layer; a first layer comprising tin oxide located over and contacting the first layer comprising silicon nitride; a first layer comprising zinc oxide located over and contacting the first layer comprising tin oxide, so that the first layer comprising tin oxide is located between and contacting the first layer comprising silicon nitride and the first layer comprising zinc oxide; a second IR reflecting layer comprising silver located over and contacting the first layer comprising zinc oxide; a contact layer located over and contacting the second IR reflecting layer; a second layer comprising zinc oxide located over and contacting the contact layer; and at least another dielectric layer located over at least the second layer comprising zinc oxide. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A coated article comprising a coating supported by a glass substrate, the coating comprising from the glass substrate outwardly:
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a layer comprising silicon nitride; a layer comprising tin oxide located over and contacting the layer comprising silicon nitride; a layer comprising zinc oxide located over and contacting the layer comprising tin oxide, so that the layer comprising tin oxide is located between and contacting the layer comprising silicon nitride and the layer comprising zinc oxide; an infrared (IR) reflecting layer located over and contacting the layer comprising zinc oxide; a contact layer located over and contacting the IR reflecting layer; and another layer comprising zinc oxide located over and contacting the contact layer. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A coated article comprising a coating supported by a glass substrate, the coating comprising:
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a dielectric layer; a first layer comprising zinc oxide located over the dielectric layer; an infrared (IR) reflecting layer comprising silver located over and contacting the first layer comprising zinc oxide; a layer comprising an oxide of Ni and/or Cr located over and contacting the IR reflecting layer; a second layer comprising zinc oxide located over and contacting the layer comprising the oxide of Ni and/or Cr; another dielectric layer comprising tin oxide located over the second layer comprising zinc oxide; a layer comprising tin oxide located directly under and contacting the first layer comprising zinc oxide, and wherein said dielectric layer is a layer comprising silicon nitride located directly under and contacting the layer comprising tin oxide. - View Dependent Claims (19, 20, 21, 22, 23)
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Specification