ANTI-COLOR BANDING TOPCOAT FOR COATED ARTICLES
4 Assignments
0 Petitions
Accused Products
Abstract
A coated article includes a functional coating, e.g. an electroconductive low emissivity coating over a surface of a glass substrate and a chemical and/or mechanical protective coating, e.g. a coating of oxides of silicon and aluminum over the functional coating. The protective coating exhibits color banding when viewed under a light source having spectrally narrow emissions, e.g. a fluorescent lamp or light emitting diode, and adjacent ones of the color banding of the protective coating have a Delta E of greater than 5. An anti-banding coating layer of the invention is applied over the protective layer, wherein the anti-banding coating layer exhibits a Delta E of less than 3.
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Citations
22 Claims
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1. (canceled)
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2. In a coated article comprising:
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a substrate having a major surface; a functional coating over the major surface of the substrate, and a chemical and/or mechanical protective coating on the functional coating, wherein the chemical and/or mechanical protective coating exhibits color banding when viewed under a light source having spectrally narrow emissions, and adjacent ones of the color banding of the chemical and/or mechanical protective coating have a first measured Delta E, the improvement comprising; an anti-banding coating layer, wherein the anti-banding coating layer is on the chemical and/or mechanical protective coating, wherein the anti-banding coating layer exhibits color banding when viewed under the light source having spectrally narrow emissions, and adjacent ones of the color banding of the anti-banding coating layer have a second measured Delta E that is less than the first measured Delta E. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 22)
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12. In a coated article comprising:
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a substrate having a major surface; a functional coating over the major surface of the substrate, and a chemical and/or mechanical protective coating on the functional coating, wherein the chemical and/or mechanical protective coating exhibits color banding when viewed under a light source having spectrally narrow emissions, and adjacent ones of the color banding of the chemical and/or mechanical protective coating have a first measured Delta E, the improvement comprising; an anti-banding coating layer on the chemical and/or mechanical protective coating, wherein the anti-banding coating layer exhibits color banding when viewed under the light source having spectrally narrow emissions, and adjacent ones of the color banding of the anti-banding coating layer have a second measured Delta E that is less than the first measured Delta E, wherein the anti-banding coating layer has an index of refraction, which is the square root of the index of refraction of the protective layer, wherein a surface of the anti-banding coating layer farthest from the substrate is a first outer surface of the coated article and a surface of the substrate opposite to the major surface of the substrate is an opposite second outer surface of the coated article.
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13-21. -21. (canceled)
Specification