Tin oxide overcoat indium tin oxide coatings, coated glazings, and production methods
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C03C-017/34
E06B-003/67
출원번호
US-0807624
(2015-07-23)
등록번호
US-9862640
(2018-01-09)
발명자
/ 주소
Pfaff, Gary L.
Durst, Stephen D.
출원인 / 주소
Cardinal CG Company
대리인 / 주소
Fredrikson & Byron, P.A.
인용정보
피인용 횟수 :
0인용 특허 :
108
초록▼
The invention provides transparent conductive coatings based on indium tin oxide. The coating has a tin oxide overcoat. In some embodiments, the coating further includes one or more overcoat films comprising silicon nitride, silicon oxynitride, or silica. The coating and its films have compositions,
The invention provides transparent conductive coatings based on indium tin oxide. The coating has a tin oxide overcoat. In some embodiments, the coating further includes one or more overcoat films comprising silicon nitride, silicon oxynitride, or silica. The coating and its films have compositions, thicknesses, and properties that simultaneously produce low sheet resistance and high visible transmission, preferably together with neutral color properties and good durability.
대표청구항▼
1. A multiple-pane insulating glazing unit having a between-pane space and two opposed external pane surfaces, a desired one of the two external pane surfaces bearing a coating comprising both an indium tin oxide film and a tin oxide film, the tin oxide film being located over the indium tin oxide f
1. A multiple-pane insulating glazing unit having a between-pane space and two opposed external pane surfaces, a desired one of the two external pane surfaces bearing a coating comprising both an indium tin oxide film and a tin oxide film, the tin oxide film being located over the indium tin oxide film, the tin oxide film being in contact with the indium tin oxide film, wherein the thickness of the tin oxide film is between 200 angstroms and 400 angstroms, wherein the thickness of the indium tin oxide film is between 1,000 angstroms and 1,600 angstroms, wherein said desired one of the two external pane surfaces is defined by a glass pane coated with the coating, said coated glass pane having a monolithic visible transmission of greater than 85% in combination with the sheet resistance of the indium tin oxide film being less than 20 ohms/square. 2. The multiple-pane insulating glazing unit of claim 1 wherein the sheet resistance of the indium tin oxide film is less than 15 ohms/square. 3. The multiple-pane insulating glazing unit of claim 1 wherein the coating further includes an oxynitride film, the oxynitride film being located over the tin oxide film. 4. The multiple-pane insulating glazing unit of claim 3 wherein the oxynitride film comprises oxygen, nitrogen, and aluminum. 5. The multiple-pane insulating glazing unit of claim 3 wherein the oxynitride film is an exposed outermost film of the coating and has a thickness of between 100 angstroms and 1,300 angstroms. 6. The multiple-pane insulating glazing unit of claim 5 wherein the oxynitride film comprises silicon oxynitride and has a thickness of between 400 angstroms and 900 angstroms. 7. The multiple-pane insulating glazing unit of claim 3 wherein the coating further includes a film comprising titanium oxide, the film comprising titanium oxide being located over the oxynitride film. 8. The multiple-pane insulating glazing unit of claim 7 wherein the film comprising titanium oxide is an exposed outermost film of the coating and has a thickness of between 10 angstroms and 200 angstroms. 9. The multiple-pane insulating glazing unit of claim 1 wherein the multiple-pane insulating glazing unit includes an internal pane surface bearing a low-emissivity coating that includes at least one film comprising silver, the low-emissivity coating being exposed to the between-pane space, the multiple-pane insulating glazing unit having a U value of less than 0.25 together with a visible transmission of greater than 55%. 10. The multiple-pane insulating glazing unit of claim 9 wherein the multiple-pane insulating glazing unit exhibits an exterior reflected color characterized by an “ah” color coordinate of between −7 and 2 and a “bh” color coordinate of between −9 and 0. 11. The multiple-pane insulating glazing unit of claim 1 wherein the tin oxide film is devoid of indium oxide. 12. The multiple-pane insulating glazing unit of claim 1 wherein the tin oxide film consists of tin oxide. 13. A coated pane comprising a glass substrate and a coating on the glass substrate, the coating comprising both an indium tin oxide film and a tin oxide film, the tin oxide film being located further from the glass pane than is the indium tin oxide film, the tin oxide film being in contact with the indium tin oxide film, the indium tin oxide film having a thickness of between 1,000 angstroms and 1,600 angstroms, the tin oxide film having a thickness of between 200 angstroms and 400 angstroms, the indium tin oxide film having a sheet resistance of less than 20 ohms/square, and the coated pane having a visible transmission of greater than 85%. 14. The coated pane of claim 13 wherein all the films of the coating are oxides, nitrides, or oxynitrides. 15. The coated pane of claim 13 wherein the sheet resistance of the indium tin oxide film is less than 15 ohms/square. 16. The coated pane of claim 13 wherein the coating further includes an oxynitride film, the oxynitride film being located over the tin oxide film. 17. The coated pane of claim 16 wherein the oxynitride film comprises oxygen, nitrogen, and aluminum. 18. The coated pane of claim 16 wherein the oxynitride film is an exposed outermost film of the coating and has a thickness of between 100 angstroms and 1,300 angstroms. 19. The coated pane of claim 16 wherein the oxynitride film comprises silicon oxynitride and has a thickness of between 400 angstroms and 900 angstroms. 20. The coated pane of claim 6 wherein the coating further includes a film comprising titanium oxide, the film comprising titanium oxide being located over the oxynitride film. 21. The coated pane of claim 20 wherein the film comprising titanium oxide is an exposed outermost film of the coating and has a thickness of between 10 angstroms and 200 angstroms. 22. The coated pane of claim 13 wherein the coating is devoid of a metal layer. 23. The coated pane of claim 13 wherein the tin oxide film is devoid of indium oxide. 24. The coated pane of claim 13 wherein the tin oxide film consists of tin oxide. 25. A multiple-pane insulating glazing unit having a between-pane space and two opposed external pane surfaces, a desired one of the two external pane surfaces bearing a transparent conductive coating comprising both an indium tin oxide film and a tin oxide film, the tin oxide film being located over the indium tin oxide film, the tin oxide film being in contact with the indium tin oxide film, the indium tin oxide film having a sheet resistance of less than 20 ohms/square and a thickness of between 1,000 angstroms and 1,600 angstroms, the tin oxide film having a thickness of between 200 angstroms and 400 angstroms, the tin oxide film being devoid of indium oxide, wherein the multiple-pane insulating glazing unit includes an internal pane surface bearing a low-emissivity coating that has only one film comprising silver, the film comprising silver containing at least 50% silver by weight, the low-emissivity coating being exposed to the between-pane space, the multiple-pane insulating glazing unit having a U value of less than 0.25 together with a visible transmission of greater than 75%, wherein said desired one of the two external pane surfaces is defined by a glass pane coated with the transparent conductive coating, said coated glass pane having a post-heat-treatment monolithic visible transmission of greater than 85%, wherein the multiple-pane insulating glazing unit exhibits an exterior reflected color characterized by an “ah” color coordinate of between −6 and 0 and a “bh” color coordinate of between −8 and −1. 26. A multiple-pane insulating glazing unit having a between-pane space and two opposed external pane surfaces, a desired one of the two external pane surfaces bearing a transparent conductive coating comprising both an indium tin oxide film and a tin oxide film, the tin oxide film being located over the indium tin oxide film, the tin oxide film being in contact with the indium tin oxide film, the indium tin oxide film having a sheet resistance of less than 20 ohms/square and a thickness of between 1,000 angstroms and 1,600 angstroms, the tin oxide film having a thickness of between 200 angstroms and 400 angstroms, the tin oxide film being devoid of indium oxide, wherein the multiple-pane insulating glazing unit includes an internal pane surface bearing a low-emissivity coating that has only two films comprising silver, each of the two films comprising silver containing at least 50% silver by weight, the low-emissivity coating being exposed to the between-pane space, the multiple-pane insulating glazing unit having a U value of less than 0.25 together with a visible transmission of greater than 65%, wherein said desired one of the two external pane surfaces is defined by a glass pane coated with the transparent conductive coating, said coated glass pane having a post-heat-treatment monolithic visible transmission of greater than 85%, wherein the multiple-pane insulating glazing unit exhibits an exterior reflected color characterized by an “ah” color coordinate of between −6 and 0 and a “bh” color coordinate of between −8 and −1. 27. A multiple-pane insulating glazing unit having a between-pane space and two opposed external pane surfaces, a desired one of the two external pane surfaces bearing a transparent conductive coating comprising both an indium tin oxide film and a tin oxide film, the tin oxide film being located over the indium tin oxide film, the tin oxide film being in contact with the indium tin oxide film, the indium tin oxide film having a sheet resistance of less than 20 ohms/square and a thickness of between 1,000 angstroms and 1,600 angstroms, the tin oxide film having a thickness of between 200 angstroms and 400 angstroms, the tin oxide film being devoid of indium oxide, wherein the multiple-pane insulating glazing unit includes an internal pane surface bearing a low-emissivity coating that includes three films comprising silver, each of the films comprising silver containing at least 50% silver by weight, the low-emissivity coating being exposed to the between-pane space, the multiple-pane insulating glazing unit having a U value of less than 0.25 together with a visible transmission of greater than 60%, wherein said desired one of the two external pane surfaces is defined by a glass pane coated with the transparent conductive coating, said coated glass pane having a post-heat-treatment monolithic visible transmission of greater than 85%, wherein the multiple-pane insulating glazing unit exhibits an exterior reflected color characterized by an “ah” color coordinate of between −6 and 1 and a “bh” color coordinate of between −7 and −1. 28. A coated pane comprising a glass substrate and a coating on the glass substrate, the coating comprising both an indium tin oxide film and a tin oxide film, the coating having an emissivity in the range of from 0.25 to 0.55, the tin oxide film being located further from the glass pane than is the indium tin oxide film, the tin oxide film being in contact with the indium tin oxide film, the tin oxide film being an outermost film of the coating, the indium tin oxide film having a sheet resistance of less than 20 ohms/square and a thickness of between 1,000 angstroms and 1,600 angstroms, the tin oxide film having a thickness of between 200 angstroms and 400 angstroms, the coated pane having a visible transmission of greater than 85%. 29. The multiple-plane insulating glazing unit of claim 1 wherein the coating is devoid of a metal layer. 30. The multiple-pane insulating glazing unit of claim 25 wherein the transparent conductive coating is devoid of a metal layer. 31. The multiple-pane insulating glazing unit of claim 26 wherein the transparent conductive coating is devoid of a metal layer. 32. The multiple-pane insulating glazing unit of claim 27 wherein the transparent conductive coating is devoid of a metal layer. 33. The coated pane of claim 28 wherein the coating is devoid of a metal layer. 34. The multiple-pane insulating glazing unit of claim 25 wherein the transparent conductive coating further includes an oxynitride film, the oxynitride film being located over the tin oxide film, wherein the oxynitride film is an exposed outermost film of the transparent conductive coating, wherein the oxynitride film has a thickness of between 400 angstroms and 900 angstroms. 35. The multiple-pane insulating glazing unit of claim 26 wherein the transparent conductive coating further includes an oxynitride film, the oxynitride film being located over the tin oxide film, wherein the oxynitride film is an exposed outermost film of the transparent conductive coating, wherein the oxynitride film has a thickness of between 400 angstroms and 900 angstroms. 36. The multiple-pane insulating glazing unit of claim 27 wherein the transparent conductive coating further includes an oxynitride film, the oxynitride film being located over the tin oxide film, wherein the oxynitride film is an exposed outermost film of the transparent conductive coating, wherein the oxynitride film has a thickness of between 400 angstroms and 900 angstroms.
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