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US 6,589,658 B1Granted
Coated article with anti-reflective layer(s) system
AssigneeGuardian Industries Corp.
InventorGrzegorz Stachowiak
Life of this patent
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Abstract
Coated articles are provided with an anti-reflective (AR) layer(s) system which enables reduced reflection, increased visible transmission, and/or neutral color. In certain embodiments, the AR layer(s) system includes a titanium oxide layer, a silicon oxynitride layer, and/or a silicon oxide layer on the substrate over an infrared (IR) reflecting layer(s) such as silver. Silicon nitride layer(s) may optionally be provided below and/or over the IR reflecting layer in certain example embodiments.
Claims55
A coated article including a coating supported by a glass substrate, the coating comprising:
- a metallic infrared (IR) reflecting layer sandwiched between first and second contact layers;
- a first dielectric layer having an index of refraction n<=2.7 provided between the IR reflecting layer and the glass substrate;
- a second dielectric layer comprising titanium oxide provided over the IR reflecting layer;
- a third dielectric layer comprising silicon oxynitride provided over the IR reflecting layer;
- a fourth dielectric layer comprising silicon oxide provided over the IR reflecting layer;
- and
- wherein the third dielectric layer comprising silicon oxynitride is provided between the second and fourth dielectric layers.
4 more elements
A coated article including a coating supported by a glass substrate, the coating comprising:
- a metallic infrared (IR) reflecting layer sandwiched between first and second contact layers which contact the IR reflecting layer;
- a first dielectric layer having an index of refraction n<=3.0 provided between the IR reflecting layer and the glass substrate;
- a second dielectric layer comprising titanium oxide provided over the IR reflecting layer;
- a third dielectric layer comprising silicon oxide provided over the IR reflecting layer;
- wherein the second dielectric layer comprising titanium oxide is provided between the IR reflecting layer and the third dielectric layer comprising silicon oxide;
- and
- wherein the second dielectric layer comprising titanium oxide is index graded so that an index of refraction n of the second dielectric layer comprising titanium oxide changes from a first value in a first portion of the second dielectric layer to a smaller second value in a second portion of the second dielectric layer, wherein the second portion of the second dielectric layer comprising titanium oxide with the smaller index of refraction n is further from the IR reflecting layer than is the first portion of the second dielectric layer.
4 more elements
A coated article including a coating supported by a glass substrate, the coating comprising:
- a metallic infrared (IR) reflecting layer comprising silver sandwiched between first and second contact layers which contact the IR reflecting layer;
- a first dielectric layer having an index of refraction n<=3.0 provided between the IR reflecting layer and the glass substrate;
- a second dielectric layer comprising titanium oxide provided over the IR reflecting layer;
- a third dielectric layer comprising silicon oxynitride provided over the IR reflecting layer;
- wherein the second dielectric layer comprising titanium oxide is provided between the IR reflecting layer and the third dielectric layer comprising silicon oxynitride;
- and
- wherein the second dielectric layer comprising titanium oxide is index graded so that an index of refraction n of the second dielectric layer comprising titanium oxide changes from a first value in a first portion of the second dielectric layer to a smaller second value in a second portion of the second dielectric layer, wherein the second portion of the second dielectric layer comprising titanium oxide with the smaller index of refraction n is further from the IR reflecting layer than is the first portion of the second dielectric layer.
4 more elements
A coated article including a coating supported by a glass substrate, the coating comprising:
- a metallic infrared (IR) reflecting layer comprising silver sandwiched between first and second contact layers which contact the IR reflecting layer;
- a first dielectric layer having an index of refraction n<=3.0 provided between the IR reflecting layer and the glass substrate;
- a second dielectric layer comprising titanium oxide provided over the IR reflecting layer;
- a third dielectric layer comprising silicon oxynitride provided over the IR reflecting layer;
- wherein the second dielectric layer comprising titanium oxide is provided between the IR reflecting layer and the third dielectric layer comprising silicon oxynitride;
- and
- a fourth dielectric layer comprising silicon oxide provided over each of the first, second and third dielectric layers.
4 more elements
A coated article including a coating supported by a glass substrate, the coating comprising:
- a metallic infrared (IR) reflecting layer comprising silver sandwiched between first and second contact layers each of which contacts the IR reflecting layer;
- a first dielectric layer having an index of refraction n<=3.0 provided between the IR reflecting layer and the glass substrate;
- a second dielectric layer comprising silicon oxynitride provided over the IR reflecting layer;
- a third dielectric layer comprising silicon oxide provided over the IR reflecting layer;
- and
- wherein the second dielectric layer comprising silicon oxynitride is provided between the IR reflecting layer and the third dielectric layer comprising silicon oxide.
3 more elements
A coated article including a coating supported by a glass substrate, the coating comprising:
- an infrared (IR) reflecting layer comprising silver sandwiched between first and second contact layers each of which contacts the IR reflecting layer;
- a first dielectric layer having an index of refraction n<=3.0 provided between the IR reflecting layer and the glass substrate;
- a second dielectric layer comprising titanium oxide provided over the IR reflecting layer;
- wherein the coated article has a sheet resistance (Rs)<=20 ohms/square;
- and
- wherein the second dielectric layer comprising titanium oxide has a varying index of refraction so that an index of refraction n of the second dielectric layer comprising titanium oxide changes from a first value in a first portion of the second dielectric layer to a smaller second value in a second portion of the second dielectric layer, wherein the second portion of the second dielectric layer comprising titanium oxide with the smaller index of refraction n is further from the IR reflecting layer than is the first portion of the second dielectric layer.
3 more elements
A coated article including a coating supported by a substrate, the coating comprising:
- a layer comprising Ag located between first and second metal oxide contact layers which contact the layer comprising Ag;
- a first dielectric layer having an index of refraction n<=3.0 provided between the substrate and the layer comprising Ag;
- a second dielectric layer having an index of refraction n=2.1-2.7 provided over the layer comprising Ag;
- a third dielectric layer comprising silicon oxynitride having an index of refraction n=1.6-1.9 provided over the layer comprising Ag,
- a fourth dielectric layer comprising silicon oxide having an index of refraction n=1.4-1.7 provided over the layer comprising Ag;
- wherein the third dielectric layer is provided between the second and fourth dielectric layers,
- wherein the coated article has a visible transmission of at least 70%, a sheet resistance (Rs)<=20 ohms/sq., and color characterized by a transmissive a* value from −4.0 to +2.0, a transmissive b* value from −5.0 to +4.0, a glass side reflective a* value from −5.0 to +3.0, and a glass side reflective b* value from −6.0 to +4.0;
- and
- wherein at least one of the first and second dielectric layers comprises titanium oxide.
6 more elements
A coated article including a coating supported by a glass substrate, the coating comprising:
- an infrared (IR) reflecting layer comprising silver;
- a first dielectric layer provided between the IR reflecting layer and the glass substrate;
- a second dielectric layer comprising titanium oxide provided over the IR reflecting layer;
- and
- wherein the second dielectric layer comprising titanium oxide has a varying index of refraction so that an index of refraction n of the second dielectric layer comprising titanium oxide changes from a first value in a first portion of the second dielectric layer to a smaller second value in a second portion of the second dielectric layer, wherein the second portion of the second dielectric layer comprising titanium oxide with the smaller index of refraction n is further from the IR reflecting layer than is the first portion of the second dielectric layer.
2 more elements
Dependencies are inferred from the claim text.