Coated article with low-E coating including IR reflecting layer (S) and corresponding method
First Claim
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1. A heat treated coated article comprising a coating supported by a glass substrate, the coating comprising:
- a first layer comprising silicon nitride which is located on and directly contacts a surface of the glass substrate;
a first layer comprising zinc oxide located over at least the first layer comprising silicon nitride;
a first infrared (IR) reflecting layer comprising silver located over and contacting the first layer comprising zinc oxide;
a second layer comprising silicon nitride located over at least the first IR reflecting layer;
a second layer comprising zinc oxide located over at least the second layer comprising silicon nitride;
a second IR reflecting layer comprising silver located over and contacting the second layer comprising zinc oxide;
a layer comprising an oxide of Ni and/or Cr located over and contacting the second IR reflecting layer;
at least another dielectric layer located over at least the layer comprising an oxide of Ni and/or Cr; and
wherein the coated article following heat treatment, measured monolithically, has a sheet resistance of less than or equal to 3.0 ohms/square and a visible transmission of at least 78%.
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Abstract
A coated article is provided that may be heat treated in certain example embodiments. A coating of the coated article includes zinc oxide inclusive layer(s) located under infrared (IR) reflecting layer(s) of a material such as silver. In certain example embodiments, coated articles are designed so as to realize higher visible transmission and/or lower sheet resistance values.
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Citations
31 Claims
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1. A heat treated coated article comprising a coating supported by a glass substrate, the coating comprising:
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a first layer comprising silicon nitride which is located on and directly contacts a surface of the glass substrate;
a first layer comprising zinc oxide located over at least the first layer comprising silicon nitride;
a first infrared (IR) reflecting layer comprising silver located over and contacting the first layer comprising zinc oxide;
a second layer comprising silicon nitride located over at least the first IR reflecting layer;
a second layer comprising zinc oxide located over at least the second layer comprising silicon nitride;
a second IR reflecting layer comprising silver located over and contacting the second layer comprising zinc oxide;
a layer comprising an oxide of Ni and/or Cr located over and contacting the second IR reflecting layer;
at least another dielectric layer located over at least the layer comprising an oxide of Ni and/or Cr; and
wherein the coated article following heat treatment, measured monolithically, has a sheet resistance of less than or equal to 3.0 ohms/square and a visible transmission of at least 78%. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A heat treated coated article comprising a coating supported by a glass substrate, the coating comprising:
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a first dielectric layer on the substrate;
a first infrared (IR) reflecting layer located over at least the first dielectric layer;
a second dielectric layer located over at least the first IR reflecting layer;
a second IR reflecting layer located over at least the second dielectric layer;
a third dielectric layer located over at least the second IR reflecting layer; and
wherein the coated article following heat treatment, measured monolithically, has a sheet resistance of less than or equal to 2.5 ohms/square and a visible transmission of at least 78%. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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22. A laminated vehicle windshield including first and second glass substrates laminated to one another, at least the first glass substrate supporting a multi-layered coating, the coating comprising:
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a first layer comprising silicon nitride which is located on and directly contacts a surface of the first glass substrate;
a first layer comprising zinc oxide located over at least the first layer comprising silicon nitride;
a first infrared (IR) reflecting layer comprising silver located over and contacting the first layer comprising zinc oxide;
a second layer comprising silicon nitride located over at least the first IR reflecting layer;
a second layer comprising zinc oxide located over at least the second layer comprising silicon nitride;
a second IR reflecting layer comprising silver located over and contacting the second layer comprising zinc oxide;
a layer comprising an oxide of Ni and/or Cr located over and contacting the second IR reflecting layer;
at least another dielectric layer located over at least the layer comprising an oxide of Ni and/or Cr; and
wherein the laminated vehicle windshield, following heat treatment of at least the first glass substrate, has a sheet resistance of less than or equal to 3.0 ohms/square and a visible transmission of at least 76.0%. - View Dependent Claims (23, 24, 25, 26, 27, 28)
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29. A laminated vehicle windshield including first and second glass substrates laminated to one another, at least the first glass substrate supporting a multi-layered coating, the coating comprising:
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a first dielectric layer on the first glass substrate;
a first infrared (IR) reflecting layer located over at least the first dielectric layer;
a second dielectric layer located over at least the first IR reflecting layer;
a second IR reflecting layer located over at least the second dielectric layer;
a third dielectric layer located over at least the second IR reflecting layer; and
wherein the laminated vehicle windshield, following heat treatment of each of the first and second glass substrates, has a sheet resistance via the coating of less than or equal to 2.5 ohms/square, and has a visible transmission of at least 77%. - View Dependent Claims (30, 31)
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Specification