Coated article with low-E coating having low visible transmission
First Claim
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1. A coated article including a coating supported by a glass substrate, the coating comprising:
- first and second infrared (IR) reflecting layers comprising silver, the first IR reflecting layer being located closer to the glass substrate than is the second IR reflecting layer;
a first contact layer comprising NiCr and containing from 0-10% oxygen (atomic %) located over and directly contacting the first IR reflecting layer comprising silver;
a dielectric layer comprising silicon nitride;
a second contact layer comprising NiCr located over and directly contacting the layer comprising silicon nitride, so that the layer comprising silicon nitride is located between the second contact layer comprising NiCr and the glass substrate;
wherein the dielectric layer comprising silicon nitride is the only dielectric layer located between the first and second contact layers comprising NiCr;
the second IR reflecting layer comprising silver located over and directly contacting the second contact layer comprising NiCr;
a third contact layer comprising NiCr and comprising 0-5% oxygen located over and directly contacting the second IR reflecting layer; and
wherein the second IR reflecting layer comprising silver is at least 10 angstroms (Å
) thinner than the first IR reflecting layer comprising silver, and wherein the coated article has a visible transmission of no greater than 50%.
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Abstract
This invention relates to a coated article including a low-emissivity (low-E) coating. In certain example embodiments, the low-E coating is provided on a substrate (e.g., glass substrate) and includes at least first and second infrared (IR) reflecting layers (e.g., silver based layers) that are spaced apart by contact layers (e.g., NiCr based layers) and a dielectric layer of or including a material such as silicon nitride. In certain example embodiments, the coated article has a low visible transmission (e.g., no greater than 50%, more preferably no greater than about 40%, and most preferably no greater than about 39%).
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6 Claims
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1. A coated article including a coating supported by a glass substrate, the coating comprising:
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first and second infrared (IR) reflecting layers comprising silver, the first IR reflecting layer being located closer to the glass substrate than is the second IR reflecting layer; a first contact layer comprising NiCr and containing from 0-10% oxygen (atomic %) located over and directly contacting the first IR reflecting layer comprising silver; a dielectric layer comprising silicon nitride; a second contact layer comprising NiCr located over and directly contacting the layer comprising silicon nitride, so that the layer comprising silicon nitride is located between the second contact layer comprising NiCr and the glass substrate; wherein the dielectric layer comprising silicon nitride is the only dielectric layer located between the first and second contact layers comprising NiCr; the second IR reflecting layer comprising silver located over and directly contacting the second contact layer comprising NiCr; a third contact layer comprising NiCr and comprising 0-5% oxygen located over and directly contacting the second IR reflecting layer; and wherein the second IR reflecting layer comprising silver is at least 10 angstroms (Å
) thinner than the first IR reflecting layer comprising silver, and wherein the coated article has a visible transmission of no greater than 50%. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification