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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0271776 (2011-10-12) |
등록번호 | US-RE44155 (2013-04-16) |
발명자 / 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 | 피인용 횟수 : 1 인용 특허 : 433 |
The invention provides a substrate bearing a low-maintenance coating. The coating includes at least two films: a base film optionally comprising silica (e.g., silicon dioxide) and a film comprising titania (e.g., titanium dioxide). The invention also provides methods of depositing such coatings.
1. A low-maintenance coating on a substrate, the coating comprising a base film positioned directly over a first major surface of the substrate and a film comprising titania positioned directly over the base film, wherein the base film has a thickness of less than about 100 angstroms, and wherein th
1. A low-maintenance coating on a substrate, the coating comprising a base film positioned directly over a first major surface of the substrate and a film comprising titania positioned directly over the base film, wherein the base film has a thickness of less than about 100 angstroms, and wherein the film comprising titania has a thickness of less than 50 angstroms. 2. The low-maintenance coating of claim 1 wherein the film comprising titania includes titanium dioxide or substoichiometric titanium oxide. 3. The low-maintenance coating of claim 1 wherein the base film comprises silica. 4. The low-maintenance coating of claim 3 wherein the base film consists essentially of silicon dioxide. 5. The low-maintenance coating of claim 1 wherein the film comprising titania has a thickness of less than 35 angstroms. 6. The low-maintenance coating of claim 1 wherein the film comprising titania has a thickness of between about 5 angstroms and about 30 angstroms. 7. The low-maintenance coating of claim 1 wherein the substrate is a window pane mounted in a window frame, and wherein the coated first major surface is exposed to an outdoor environment. 8. The low-maintenance coating of claim 1 wherein the base film and film comprising titania are both sputtered films. 9. A low-maintenance coating on a glass sheet, the coating comprising a base film positioned over a first major surface of the glass sheet and a film comprising titania positioned directly over the base film, wherein the base film comprises silica and has a thickness of less than 100 angstroms, and wherein the film comprising titania has a thickness of less than 100 angstroms. 10. The low-maintenance coating of claim 9 wherein the film comprising titania comprises titanium dioxide or substoichiometric titanium oxide. 11. The low-maintenance coating of claim 9 wherein the base film consists essentially of silicon dioxide. 12. The low-maintenance coating of claim 9 wherein the film comprising titania has a thickness of less than 50 angstroms 13. The low-maintenance coating of claim 9 wherein the film comprising titania has a thickness of less than 35 angstroms. 14. The low-maintenance coating of claim 9 wherein the film comprising titania has a thickness of between about 5 angstroms and about 30 angstroms. 15. The low-maintenance coating of claim 9 wherein the glass sheet is a window pane mounted in a window frame, and wherein the coated first major surface is exposed to an outdoor environment. 16. The low-maintenance coating of claim 9 wherein the silica base film and film comprising titania are both sputtered films. 17. An insulating glass unit comprising two spaced-apart panes bounding a between-pane space, wherein at least one of the panes has a desired major surface bearing a low-maintenance coating, wherein said desired major surface is an exterior surface of the unit and faces away from the between-pane space, the coating comprising a base film positioned directly over said desired major surface and a film comprising titania positioned directly over the base film, wherein the base film comprises silica has a thickness of less than 100 angstroms and the film comprising titania has a thickness of less than 50 angstroms. 18. The low-maintenance coating of claim 3 wherein the base film further comprises an oxidized electrically conductive material. 19. The low-maintenance coating of claim 18 wherein the electrically conductive material is aluminum. 20. The low-maintenance coating of claim 1 wherein the film comprising titania further comprises a material selected from the group consisting of oxides of iron, silver, copper, tungsten, aluminum, zinc, strontium, palladium, gold, platinum, nickel, and cobalt. 21. The low-maintenance coating of claim 1 wherein the film comprising titania is an outermost film of the coating. 22. The low-maintenance coating of claim 9 wherein the film comprising titania is an outermost film of the coating. 23. The low-maintenance coating of claim 17 wherein the film comprising titania is an outermost film of the coating. 24. A low-maintenance coating on a glass sheet, the coating comprising a base film extending directly from a first major surface of the glass sheet to a thickness of less than about 100 angstroms, and a film comprising titania extending directly from a surface of the base film to a thickness of less than 50 angstroms. 25. The low-maintenance coating of claim 24 wherein the film comprising titania includes titanium dioxide or substoichiometric titanium oxide. 26. The low-maintenance coating of claim 24 wherein the base film comprises silica. 27. The low-maintenance coating of claim 26 wherein the base film consists essentially of silicon dioxide. 28. The low-maintenance coating of claim 24 wherein the film comprising titania has a thickness of less than 35 angstroms. 29. The low-maintenance coating of claim 24 wherein the film comprising titania has a thickness of between about 5 angstroms and about 30 angstroms. 30. The low-maintenance coating of claim 24 wherein the glass sheet is a window pane mounted in a window frame, and wherein the coated first major surface is exposed to an outdoor environment. 31. The low-maintenance coating of claim 24 wherein the base film and film comprising titania are both sputtered films. 32. A low-maintenance coating on a glass sheet, the coating comprising a base film deposited directly over a first major surface of the glass sheet and having a thickness of less than 100 angstroms but greater than about 30 angstroms, and a film comprising titania deposited directly over the base film and having a thickness of less 100 angstroms but greater than about 30 angstroms. 33. The low-maintenance coating of claim 32 wherein the base film comprises silica that includes an electrically conductive material present in an oxidized form. 34. The low-maintenance coating of claim 33 wherein the base film consists essentially of silicon dioxide. 35. The low-maintenance coating of claim 32 wherein the base film is a silica film containing aluminum oxide. 36. The low-maintenance coating of claim 32 wherein the film comprising titania includes titanium dioxide or substoichiometric titanium oxide. 37. The low-maintenance coating of claim 32 wherein the glass sheet is a window pane mounted in a window frame, and wherein the coated first major surface is exposed to an outdoor environment. 38. The low-maintenance coating of claim 32 wherein the base film and film comprising titania are both sputtered films. 39. The low-maintenance coating of claim 32 wherein the glass sheet is soda-lime glass. 40. The low-maintenance coating of claim 32 wherein the glass sheet is part of an insulating glass unit.
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