Soil-resistant coating for glass surfaces
First Claim
1. A method of depositing film onto two sides of a single pane of glass in a single pass through a coating apparatus, comprising:
- providing a sheet of glass having a clean interior surface and a clean exterior surface;
providing a sputtering line comprising a series of sputtering chambers, the sputtering line having a plurality of transport rollers for conveying the glass sheet along the sputtering line, the sputtering line having an upper target positioned above the transport rollers and a lower target positioned below the transport rollers, wherein the upper and lower targets are rotary targets;
positioning the sheet of glass on the transport rollers such that the interior surface is oriented toward the upper target and sputtering the upper target to deposit a coating directly on one of the interior surface of the glass or a film stack layer previously deposited on the interior surface of the glass;
positioning the sheet of glass on the transport rollers such that the exterior surface is oriented toward the lower target and sputtering the lower target to deposit a coating on one of the exterior surface of the glass or a film stack layer previously deposited on the exterior surface of the glass;
wherein the glass sheet is conveyed over the transport rollers such that the coating on the exterior surface of the glass sheet comes into direct contact with the transport rollers, and wherein the glass sheet is coated on both the interior surface and the exterior surface while maintaining a constant orientation wherein the interior surface is positioned above the exterior surface.
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Accused Products
Abstract
A method and apparatus for coating two sides of a single pane of glass or other substrate in a single pass through a coating apparatus. A sputtering line is provided, this line comprising a series of sputtering chambers. At least one of the chambers comprises a downward sputtering chamber having an upper target. At least one of the chambers comprises an upward sputtering chamber having a lower target. In some embodiments, the upper and lower targets are rotary targets. The coating apparatus advantageously has a plurality of transport rollers for conveying the substrate along the sputtering line. In certain embodiments, a majority of the chambers of the sputtering line are downward sputtering chambers each having only an upper target with no lower target.
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Citations
11 Claims
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1. A method of depositing film onto two sides of a single pane of glass in a single pass through a coating apparatus, comprising:
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providing a sheet of glass having a clean interior surface and a clean exterior surface;
providing a sputtering line comprising a series of sputtering chambers, the sputtering line having a plurality of transport rollers for conveying the glass sheet along the sputtering line, the sputtering line having an upper target positioned above the transport rollers and a lower target positioned below the transport rollers, wherein the upper and lower targets are rotary targets;
positioning the sheet of glass on the transport rollers such that the interior surface is oriented toward the upper target and sputtering the upper target to deposit a coating directly on one of the interior surface of the glass or a film stack layer previously deposited on the interior surface of the glass;
positioning the sheet of glass on the transport rollers such that the exterior surface is oriented toward the lower target and sputtering the lower target to deposit a coating on one of the exterior surface of the glass or a film stack layer previously deposited on the exterior surface of the glass;
wherein the glass sheet is conveyed over the transport rollers such that the coating on the exterior surface of the glass sheet comes into direct contact with the transport rollers, and wherein the glass sheet is coated on both the interior surface and the exterior surface while maintaining a constant orientation wherein the interior surface is positioned above the exterior surface. - View Dependent Claims (2, 3, 4, 5)
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6. A method of depositing film onto two sides of a single pane of glass in a single pass through a coating apparatus, comprising:
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providing a sheet of glass having a clean interior surface and a clean exterior surface;
providing a sputtering line comprising a series of sputtering chambers, the sputtering line having a plurality of transport rollers for conveying the glass sheet along the sputtering line, the sputtering line having an upper target positioned above the transport rollers and a lower target positioned below the transport rollers;
positioning the sheet of glass on the transport rollers such that the interior surface is oriented toward the upper target and sputtering the upper target to deposit a coating directly on one of the interior surface of the glass or a film stack layer previously deposited on the interior surface of the glass;
positioning the sheet of glass on the transport rollers such that the exterior surface is oriented toward the lower target and sputtering the lower target to deposit a coating on one of the exterior surface of the glass or a film stack layer previously deposited on the exterior surface of the glass;
wherein the glass sheet is coated on both the interior surface and the exterior surface while maintaining a constant orientation wherein the interior surface is positioned above the exterior surface, wherein the sputtering line includes a combination of dual direction sputtering chambers and downward sputtering chambers, each dual direction sputtering chamber having at least one target above the transport rollers and at least one target below the transport rollers, each downward sputtering chamber having only an upper target with no target beneath the transport rollers, and wherein a plurality of the downward sputtering chambers are each operated to deposit a metal layer.
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7. A method of depositing film onto two sides of a single pane of glass in a single pass through a coating apparatus, comprising:
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providing a sheet of glass having a clean interior surface and a clean exterior surface;
providing a sputtering line comprising a series of sputtering chambers, the sputtering line having a plurality of transport rollers for conveying the glass sheet along the sputtering line, the sputtering line having an upper target positioned above the transport rollers and a lower target positioned below the transport rollers, wherein the upper target and the lower target are provided in a single sputtering chamber of the sputtering line;
positioning the sheet of glass on the transport rollers such that the interior surface is oriented toward the upper target and sputtering the upper target to deposit a coating directly on one of the interior surface of the glass or a film stack layer previously deposited on the interior surface of the glass;
positioning the sheet of glass on the transport rollers such that the exterior surface is oriented toward the lower target and sputtering the lower target to deposit a coating on one of the exterior surface of the glass or a film stack layer previously deposited on the exterior surface of the glass;
wherein the glass sheet is coated on both the interior surface and the exterior surface while maintaining a constant orientation wherein the interior surface is positioned above the exterior surface, and wherein a majority of the sputtering chambers of the sputtering line are downward sputtering chambers each having only an upper target with no target beneath the transport rollers.
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8. A method of depositing film onto two sides of a single pane of glass in a single pass through a coating apparatus, comprising:
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providing a sheet of glass having a clean interior surface and a clean exterior surface;
providing a sputtering line comprising a series of sputtering chambers, the sputtering line having a plurality of transport rollers for conveying the glass sheet along the sputtering line, the sputtering line having an upper target positioned above the transport rollers and a lower target positioned below the transport rollers;
positioning the sheet of glass on the transport rollers such that the interior surface is oriented toward the upper target and sputtering the upper target to deposit a coating directly on one of the interior surface of the glass or a film stack layer previously deposited on the interior surface of the glass;
positioning the sheet of glass on the transport rollers such that the exterior surface is oriented toward the lower target and sputtering the lower target to deposit a coating on one of the exterior surface of the glass or a film stack layer previously deposited on the exterior surface of the glass;
the glass sheet being coated on both the interior surface and the exterior surface while maintaining a constant orientation wherein the interior surface is positioned above the exterior surface, at least one of said coatings being a titanium oxide film.
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9. A coating apparatus for coating two sides of a single pane of glass in a single pass through the coating apparatus, the coating apparatus comprising a sputtering line that includes a series of sputtering chambers, the sputtering line having a plurality of transport rollers for conveying the pane of glass along the sputtering line, an upper target positioned above the transport rollers, and a lower target positioned below the transport rollers, wherein the upper target and the lower target are provided in a single sputtering chamber of the sputtering line, and wherein a majority of the sputtering chambers of the sputtering line are downward sputtering chambers each having only an upper target with no target beneath the transport rollers.
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10. A coating apparatus for coating two sides of a single pane of glass in a single pass through the coating apparatus, the coating apparatus comprising a sputtering line that includes a series of sputtering chambers, the sputtering line having a plurality of transport rollers for conveying the pane of glass along the sputtering line, an upper target positioned above the transport rollers, and a lower target positioned below the transport rollers, wherein the sputtering line has a combination of dual direction sputtering chambers and downward sputtering chambers, each dual direction sputtering chamber having at least one target above the transport rollers and at least one target below the transport rollers, each downward sputtering chamber having only an upper target with no target beneath the transport rollers.
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11. A coating apparatus for coating two sides of a single pane of glass in a single pass through the coating apparatus, the coating apparatus comprising a sputtering line that includes a series of sputtering chambers, the sputtering line having a plurality of transport rollers for conveying the pane of glass along the sputtering line, an upper target positioned above the transport rollers, and a lower target positioned below the transport rollers, wherein the sputtering line includes a dual-direction below the transport rollers, wherein the sputtering line includes a dual-direction sputtering chamber in which positioned above or below the transport rollers are two targets at least one of which is formed of titanium metal or TiOx, where 1<
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Specification