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 located over and directly contacting the first IR reflecting layer comprising silver;
a dielectric layer comprising silicon nitride located over and directly contacting the first contact layer comprising NiCr;
a second contact layer comprising NiCr located over and directly contacting the layer comprising silicon nitride;
the second IR reflecting layer comprising silver located over and directly contacting the second contact layer comprising NiCr; 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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Citations
30 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 located over and directly contacting the first IR reflecting layer comprising silver; a dielectric layer comprising silicon nitride located over and directly contacting the first contact layer comprising NiCr; a second contact layer comprising NiCr located over and directly contacting the layer comprising silicon nitride; the second IR reflecting layer comprising silver located over and directly contacting the second contact layer comprising NiCr; 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, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A coated article including a coating supported by a glass substrate, comprising:
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first and second infrared (IR) reflecting layers, the first IR reflecting layer being located closer to the glass substrate than is the second IR reflecting layer; a first substantially metallic contact layer comprising NiCr located over and directly contacting the first IR reflecting layer, the first substantially metallic contact layer comprising NiCr being from about 15-30 Å
thick;a dielectric layer comprising silicon nitride located over and directly contacting the first contact layer comprising NiCr; a second substantially metallic contact layer comprising NiCr located over and directly contacting the layer comprising silicon nitride; the second IR reflecting layer located over and directly contacting the second contact layer comprising NiCr; 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 (26, 27, 28, 29)
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30. A method of making a coated article including a coating supported by a glass substrate, the method comprising:
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sputter-depositing 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; sputter-depositing a first contact layer comprising NiCr located over and directly contacting the first IR reflecting layer comprising silver; sputter-depositing a dielectric layer comprising silicon nitride located over and directly contacting the first contact layer comprising NiCr; sputter-depositing a second contact layer comprising NiCr located over and directly contacting the layer comprising silicon nitride, the second IR reflecting layer comprising silver located over and directly contacting the second contact layer comprising NiCr; 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% measured monolithically.
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Specification