Coated article with IR reflecting layer and method of making same
First Claim
1. An IG window unit including a coating supported by a glass substrate, the coating from the glass substrate outwardly comprising at least the following:
- a dielectric layer of Si3N4;
a high index layer having a refractive index of at least 2.1;
another dielectric layer comprising silicon nitride;
a layer comprising zinc oxide;
an infrared (IR) reflecting layer comprising silver on the glass substrate, located over and directly contacting the layer comprising zinc oxide, wherein the coating includes only one IR reflecting layer;
an overcoat comprising (i) a layer comprising tin oxide and (ii) a layer comprising silicon nitride located over and contacting the layer comprising tin oxide;
wherein the IG unit has an SHGC value of at least 0.65, a visible transmission of at least 70%, and an Energy Rating of at least 25;
wherein the coating does not contain any titanium oxide based layer located over the IR reflecting layer; and
wherein said glass substrate is an interior glass substrate, the IG unit further comprising an exterior glass substrate to be located adjacent an exterior of a building in which the IG unit is provided, wherein the coating is provided on a surface of the interior glass substrate facing a gap between the interior and exterior glass substrates, and wherein the IG is configured to have, as viewed from an exterior of the building, a reflective a* value of from about −
4 to 0 and a reflective b* value of from about −
1 to +2.5.
4 Assignments
0 Petitions
Accused Products
Abstract
A low-E coating supported by a glass substrate, the coating from the glass substrate outwardly including at least the following layers: a dielectric layer of or including silicon nitride; a high index layer having a refractive index of at least 2.1; another dielectric layer of or including silicon nitride; a layer comprising zinc oxide; an infrared (IR) reflecting layer, wherein the coating includes only one IR reflecting layer; and an overcoat including (i) a layer comprising tin oxide and (ii) a layer comprising silicon nitride located over and contacting the layer comprising tin oxide. An IG unit including the coating may have a visible transmission of at least 70%.
72 Citations
18 Claims
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1. An IG window unit including a coating supported by a glass substrate, the coating from the glass substrate outwardly comprising at least the following:
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a dielectric layer of Si3N4; a high index layer having a refractive index of at least 2.1; another dielectric layer comprising silicon nitride; a layer comprising zinc oxide; an infrared (IR) reflecting layer comprising silver on the glass substrate, located over and directly contacting the layer comprising zinc oxide, wherein the coating includes only one IR reflecting layer; an overcoat comprising (i) a layer comprising tin oxide and (ii) a layer comprising silicon nitride located over and contacting the layer comprising tin oxide; wherein the IG unit has an SHGC value of at least 0.65, a visible transmission of at least 70%, and an Energy Rating of at least 25; wherein the coating does not contain any titanium oxide based layer located over the IR reflecting layer; and wherein said glass substrate is an interior glass substrate, the IG unit further comprising an exterior glass substrate to be located adjacent an exterior of a building in which the IG unit is provided, wherein the coating is provided on a surface of the interior glass substrate facing a gap between the interior and exterior glass substrates, and wherein the IG is configured to have, as viewed from an exterior of the building, a reflective a* value of from about −
4 to 0 and a reflective b* value of from about −
1 to +2.5. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An IG window unit including a coating supported by a glass substrate, the coating from the glass substrate outwardly comprising at least the following:
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a dielectric layer of Si3N4; a high index layer having a refractive index of at least 2.1; another dielectric layer comprising silicon nitride; a layer comprising zinc oxide; an infrared (IR) reflecting layer comprising silver on the glass substrate, located over and directly contacting the layer comprising zinc oxide, wherein the coating includes only one IR reflecting layer; an overcoat comprising (i) a layer comprising tin oxide and (ii) a layer comprising silicon nitride located over and contacting the layer comprising tin oxide; wherein the IG unit has an SHGC value of at least 0.65, a visible transmission of at least 70%, and an Energy Rating of at least 25; wherein the coating does not contain any titanium oxide based layer located over the IR reflecting layer; and wherein the IG unit is configured to have, as viewed from an exterior of a building, a reflective a* value of from about −
4 to 0 and a reflective b* value of from about −
1 to +2.5. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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18. An IG window unit including a coating supported by a glass substrate, the coating from the glass substrate outwardly comprising at least the following:
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a dielectric layer of Si3N4; a high index layer having a refractive index of at least 2.1; another dielectric layer comprising silicon nitride; a layer comprising zinc oxide; an infrared (IR) reflecting layer comprising silver on the glass substrate, located over and directly contacting the layer comprising zinc oxide, wherein the coating includes only one IR reflecting layer; an overcoat comprising (i) a layer comprising tin oxide and (ii) a layer comprising silicon nitride located over and contacting the layer comprising tin oxide; wherein the IG unit has a visible transmission of at least 70%; wherein the coating does not contain any titanium oxide based layer located over the IR reflecting layer; and wherein the IG unit is configured to have, as viewed from an exterior of a building, a reflective a* value of from about −
4 to 0 and a reflective b* value of from about −
1 to +2.5.
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Specification