High quality emission control coatings, emission control glazings, and production methods
First Claim
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1. A multiple-pane insulating glazing unit including a first glass pane having opposed external and internal major surfaces, the multiple-pane insulating glazing unit including a second glass pane and having at least one between-pane space, the second glass pane having an external surface bearing an emission control coating comprising a transparent conductive film over which there is provided an oxygen barrier film, wherein the emission control coating is a heat treated coating, the transparent conductive film comprising indium tin oxide and having both a haze of less than 0.3 and a roughness Ra of less than 3 nm, the transparent conductive film comprising indium tin oxide having a thickness in the range of between about 1,000 angstroms and about 1,500 angstroms, the oxygen barrier film comprising an oxynitride, the oxygen barrier film comprising the oxynitride being in contact with the transparent conductive film, the oxygen barrier film comprising the oxynitride being exposed and configured to be positioned to face a room-side environment inside a building, the coated second glass pane being heat treated to maintain a cut-enabling stress state and having a monolithic visible transmission of greater than 80%, and yet the multiple-pane insulating glazing unit has a U Value of less than 0.3.
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Abstract
The invention provides emission control coatings. The coating includes a transparent conductive film over which there is an oxygen barrier film. In some embodiments, the transparent conductive film comprises indium tin oxide and the oxygen barrier film comprises silicon nitride.
108 Citations
23 Claims
- 1. A multiple-pane insulating glazing unit including a first glass pane having opposed external and internal major surfaces, the multiple-pane insulating glazing unit including a second glass pane and having at least one between-pane space, the second glass pane having an external surface bearing an emission control coating comprising a transparent conductive film over which there is provided an oxygen barrier film, wherein the emission control coating is a heat treated coating, the transparent conductive film comprising indium tin oxide and having both a haze of less than 0.3 and a roughness Ra of less than 3 nm, the transparent conductive film comprising indium tin oxide having a thickness in the range of between about 1,000 angstroms and about 1,500 angstroms, the oxygen barrier film comprising an oxynitride, the oxygen barrier film comprising the oxynitride being in contact with the transparent conductive film, the oxygen barrier film comprising the oxynitride being exposed and configured to be positioned to face a room-side environment inside a building, the coated second glass pane being heat treated to maintain a cut-enabling stress state and having a monolithic visible transmission of greater than 80%, and yet the multiple-pane insulating glazing unit has a U Value of less than 0.3.
- 12. A multiple-pane insulating glazing unit mounted in a frame, the multiple-pane insulating glazing unit including a first glass pane having opposed external and internal major surfaces, the multiple-pane insulating glazing unit including a second glass pane and having at least one between-pane space, the second glass pane having an external surface bearing an emission control coating comprising a transparent conductive film over which there is provided an oxygen barrier film, the multiple-pane insulating glazing unit being mounted in the frame such that the external surface of the second glass pane is exposed to a room-side environment while the external surface of the first glass pane is exposed to an outdoor environment, wherein the emission control coating is a heat treated coating, the transparent conductive film comprising indium tin oxide and having both a haze of less than 0.3 and a roughness Ra of less than 3 nm, the transparent conductive film comprising indium tin oxide having a thickness in the range of between about 1,000 angstroms and about 1,500 angstroms, the oxygen barrier film comprising an oxynitride, the oxygen barrier film comprising the oxynitride being in contact with the transparent conductive film, the oxygen barrier film comprising the oxynitride being exposed and configured to be positioned to face a room-side environment inside a building, the coated second glass pane being heat treated to maintain a cut-enabling stress state and having a monolithic visible transmission of greater than 80%, and yet the multiple-pane insulating glazing unit has a U Value of less than 0.3.
- 16. A multiple-pane insulating glazing unit including a first glass pane having opposed external and internal major surfaces, the multiple-pane insulating glazing unit including a second glass pane having an internal surface bearing a low-emissivity coating, the low-emissivity coating being exposed to a between-pane space of the multiple-pane insulating glazing unit, the second glass pane having an external surface bearing an emission control coating comprising a transparent conductive film over which there is provided an oxygen barrier film, wherein the emission control coating is a heat treated coating, the transparent conductive film comprising indium tin oxide and having both a haze of less than 0.3 and a roughness Ra of less than 3 nm, the transparent conductive film comprising indium tin oxide having a thickness in the range of between about 1,000 angstroms and about 1,500 angstroms, the oxygen barrier film comprising an oxynitride, the oxygen barrier film comprising the oxynitride being in contact with the transparent conductive film, the oxygen barrier film comprising the oxynitride being exposed and configured to be positioned to face a room-side environment inside a building, the coated second glass pane being heat treated to maintain a cut-enabling stress state and having a monolithic visible transmission of greater than 80%, the external major surface of the first glass pane bearing an emission control coating comprising a transparent conductive film over which there is provided an oxygen barrier film, and the multiple-pane insulating glazing unit having a U Value of less than 0.3.
- 21. A multiple-pane insulating glazing unit including a first glass pane having opposed external and internal major surfaces, the multiple-pane insulating glazing unit including a second glass pane and having at least one between-pane space, the second glass pane having an external surface bearing an emission control coating comprising a sputtered transparent conductive film over which there is provided a sputtered oxygen barrier film, wherein the emission control coating is a heat treated coating characterized by having been heat treated in air, the transparent conductive film comprising indium tin oxide and having both a haze of less than 0.3 and a roughness Ra of less than 3 nm, the transparent conductive film comprising indium tin oxide having a thickness in the range of between about 1,000 angstroms and about 1,500 angstroms, the oxygen barrier film comprising an oxynitride, the oxygen barrier film comprising the oxynitride being in contact with the transparent conductive film, the oxygen barrier film comprising the oxynitride being exposed and configured to be positioned to face a room-side environment inside a building, the coated second glass pane being heat treated to maintain a cut-enabling stress state and having a monolithic visible transmission of greater than 85%, and yet the multiple-pane insulating glazing unit has a U Value of less than 0.3.
Specification
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Current AssigneeCardinal CG Company (Cardinal Glass Industries Incorporated)
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Original AssigneeCardinal CG Company (Cardinal Glass Industries Incorporated)
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InventorsMyli, Kari B., Pfaff, Gary L., Vance, Greg, Hartig, Klaus H. W.
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Primary Examiner(s)Loney, Donald J
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Application NumberUS14/185,287Publication NumberTime in Patent Office950 DaysField of SearchUS Class Current1/1CPC Class CodesC03C 17/3411 with at least two coatings ...C03C 2217/94 Transparent conductive oxid...C03C 2217/948 Layers comprising indium ti...E06B 3/6612 Evacuated glazing unitsE06B 3/67 characterised by additional...E06B 3/6715 specially adapted for incre...E06B 3/6722 with adjustable passage of ...Y02B 80/22 Glazing, e.g. vaccum glazingY10T 428/24355 Continuous and nonuniform o...
