Processes for forming transparent substrate with diffuser surface
First Claim
1. A method of forming a diffuser coating on a transparent substrate, said method comprising:
- spraying at least one layer of a precursor solution onto a transparent substrate to form a preliminary coating;
at least partially densifying said preliminary coating;
spraying a further layer of a precursor solution onto said preliminary coating; and
firing said preliminary coating and said further layer to form a diffuser surface coating on said substrate;
said method including at least one of a) forming said coating to have a gloss reading less than about 80 gloss units, b) forming said coating to have a resolution of at least 3 lines per millimeter, c) forming said coating to have a thickness of less than about 3 microns, and d) firing said preliminary coating and said further layer at a temperature in the range of from about 250°
C. to about 600°
C.
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Accused Products
Abstract
Processes for making a transparent substrate having a glare reducing diffuser surface coating on its outer surface are disclosed to provide a faceplate such as for attachment to a screen for a cathode ray tube or other display device. Preferably, the coating has a thickness of less than about 3 microns and/or a gloss less than about 80 gloss units. The method includes spraying a precursor solution onto the substrate to form a preliminary coating, at least partially densifying that preliminary coating, spraying another coating of precursor solution onto the preliminary coating, and firing the coating to form a diffuser surface coating. Alternately, a precursor solution of an inorganic metal oxide dissolved in an organic solvent is sprayed on the substrate and fired at a temperature within the range of from about 250° C. to about 600° C. to form the diffuser surface coating.
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Citations
26 Claims
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1. A method of forming a diffuser coating on a transparent substrate, said method comprising:
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spraying at least one layer of a precursor solution onto a transparent substrate to form a preliminary coating;
at least partially densifying said preliminary coating;
spraying a further layer of a precursor solution onto said preliminary coating; and
firing said preliminary coating and said further layer to form a diffuser surface coating on said substrate;
said method including at least one of a) forming said coating to have a gloss reading less than about 80 gloss units, b) forming said coating to have a resolution of at least 3 lines per millimeter, c) forming said coating to have a thickness of less than about 3 microns, and d) firing said preliminary coating and said further layer at a temperature in the range of from about 250°
C. to about 600°
C.- View Dependent Claims (2, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 21, 22)
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3. A method of forming a diffuser coating on a transparent substrate, said method comprising:
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spraying at least one layer of a metal oxide precursor solution onto a transparent substrate to form a preliminary coating;
at least partially densifying said preliminary coating;
spraying a further layer of a metal oxide precursor solution onto said preliminary coating; and
firing said preliminary coating and said further layer at a temperature in the range of from about 250°
C. to about 600°
C. to form a diffuser surface coating on said transparent substrate having a thickness of less than about 3 microns, a gloss reading in the range of about 30 to about 80 gloss units, and a resolution in the range of about 3 lines to about 15 lines per millimeter; and
overcoating said diffuser surface coating on said transparent substrate with a transparent conductor coating. - View Dependent Claims (4)
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16. A method of forming a diffuser coating on a transparent substrate, said method comprising:
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providing a precursor solution comprising a precursor of an metal oxide dissolved in an organic solvent;
spraying at least one layer of said precursor solution onto said transparent substrate; and
firing said at least one layer at a temperature within the range of from about 250°
C. to about 600°
C. to form a diffuser surface coating having a thickness less than about 3 microns, a gloss reading of about 30 to about 80 gloss units, and a resolution in the range of about 3 lines to about 15 lines per millimeter.- View Dependent Claims (17, 18, 19, 20, 23, 24, 25, 26)
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Specification