High shading performance coatings
First Claim
Patent Images
1. A transparent substrate bearing a high shading performance, low-emissivity coating comprising, in sequence outwardly:
- (a) a first infrared-reflective film having a thickness of between about 76 Å and
about 122 Å
;
(b) a first high absorption blocker layer positioned directly over the first infrared-reflective film, the first high absorption blocker layer comprising a metallic film selected from the group consisting of niobium, titanium, and niobium-titanium, wherein the first high absorption blocker layer has a thickness of between about 38 Å and
about 69 Å
;
(c) a second infrared-reflective film having a thickness of between about 119 Å and
about 184 Å
; and
(d) a second high absorption blocker layer positioned directly over the second infrared-reflective film, the second high absorption blocker layer comprising a metallic film selected from the group consisting of niobium, titanium, niobium-titanium, wherein the second high absorption blocker layer has a thickness of between about 29 Å and
about 63 Å
, wherein the first and second high absorption blocker layers have a combined thickness of at least 70 Å
, the coating comprising an inner coat between the substrate and the first infrared-reflective film, the inner coat having an optical thickness and comprising at least one transparent dielectric film, the coating comprising a middle coat between the first high absorption blocker layer and the second infrared-reflective film, the middle coat having an optical thickness and comprising at least one transparent dielectric film, wherein the coating has a ratio defined as the optical thickness of the inner coat divided by the optical thickness of the middle coat, said ratio being between about 0.12 and about 0.2.
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Abstract
The invention provides high shading performance, low-emissivity coatings. The invention provides a monolithic pane bearing a high shading performance, low-emissivity coating. The invention also provides an insulating glass unit bearing a high shading performance, low-emissivity coating. Finally, the invention provides methods of producing coated substrates by depositing high shading performance, low-emissivity coatings.
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Citations
44 Claims
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1. A transparent substrate bearing a high shading performance, low-emissivity coating comprising, in sequence outwardly:
-
(a) a first infrared-reflective film having a thickness of between about 76 Å and
about 122 Å
;(b) a first high absorption blocker layer positioned directly over the first infrared-reflective film, the first high absorption blocker layer comprising a metallic film selected from the group consisting of niobium, titanium, and niobium-titanium, wherein the first high absorption blocker layer has a thickness of between about 38 Å and
about 69 Å
;(c) a second infrared-reflective film having a thickness of between about 119 Å and
about 184 Å
; and(d) a second high absorption blocker layer positioned directly over the second infrared-reflective film, the second high absorption blocker layer comprising a metallic film selected from the group consisting of niobium, titanium, niobium-titanium, wherein the second high absorption blocker layer has a thickness of between about 29 Å and
about 63 Å
, wherein the first and second high absorption blocker layers have a combined thickness of at least 70 Å
, the coating comprising an inner coat between the substrate and the first infrared-reflective film, the inner coat having an optical thickness and comprising at least one transparent dielectric film, the coating comprising a middle coat between the first high absorption blocker layer and the second infrared-reflective film, the middle coat having an optical thickness and comprising at least one transparent dielectric film, wherein the coating has a ratio defined as the optical thickness of the inner coat divided by the optical thickness of the middle coat, said ratio being between about 0.12 and about 0.2. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An insulating glass unit comprising first and second panes held in a spaced-apart configuration, the panes having confronting inner surfaces oriented toward a between-pane space and opposed outer surfaces oriented away from the between-pane space, wherein one of said inner surfaces bears a high shading performance, low-emissivity coating comprising first and second infrared-reflective films and first and second high absorption blocker layers positioned respectively directly over said first and second infrared-reflective films, wherein the first and second high absorption blocker layers have a combined thickness of at least 70 Å
- , wherein each of the high absorption blocker layers comprises a metallic film selected from the group consisting of niobium, titanium, and niobium-titanium, and wherein the insulating glass unit has a total visible transmittance of between about 0.36 and about 0.44 and an exterior reflected color characterized by an ah, color coordinate of between about −
0.75 and about −
3.25 and a bh color coordinate of between about −
2.25 and about −
4.75, the coating comprising an inner coat positioned directly over said one of said inner surfaces, wherein the inner coat comprises at least one transparent dielectric film, and wherein each film of the inner coat is a transparent dielectric film having a refractive index of between about 1.7 and about 2.4, the first infrared-reflective film being positioned directly over the inner coat. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
- , wherein each of the high absorption blocker layers comprises a metallic film selected from the group consisting of niobium, titanium, and niobium-titanium, and wherein the insulating glass unit has a total visible transmittance of between about 0.36 and about 0.44 and an exterior reflected color characterized by an ah, color coordinate of between about −
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28. An insulating glass unit comprising first and second panes held in a spaced-apart configuration, the panes having confronting inner surfaces oriented toward a between-pane space and opposed outer surfaces oriented away from the between-pane space, wherein one of said inner surfaces bears a high shading performance, low-emissivity coating comprising first and second infrared-reflective films and first and second high absorption blocker layers positioned respectively directly over said first and second infrared-reflective films, wherein each of the high absorption blocker layers comprises a metallic film selected from the group consisting of niobium, titanium, and niobium-titanium, wherein the first and second high absorption blocker layers have a combined thickness of at least 70 Å
- , and wherein the insulating glass unit has a solar heat gain coefficient of less than about 0.3, the coating comprising an inner coat between said one of said inner surfaces and the first infrared-reflective film, the inner coat having an optical thickness and comprising at least one transparent dielectric film, the coating comprising a middle coat between the first high absorption blocker layer and the second infrared-reflective film, the middle coat having an optical thickness and comprising at least one transparent dielectric film, wherein the coating has a ratio defined as the optical thickness of the inner coat divided by the optical thickness of the middle coat, said ratio being between about 0.12 and about 0.2.
- View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
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44. An insulating glass unit comprising first and second panes held in a spaced-apart configuration, the panes having confronting inner surfaces oriented toward a between-pane space and opposed outer surfaces oriented away from the between-pane space, wherein one of said inner surfaces bears a high shading performance, low-emissivity coating comprising first and second infrared-reflective films and first and second high absorption blocker layers positioned respectively over said first and second infrared-reflective films, wherein the first and second high absorption blocker layers have a combined thickness of at least 70 angstroms, the coating comprising an inner coat positioned directly over said one of said inner surfaces, wherein the inner coat comprises at least one transparent dielectric film, wherein each film of the inner coat is a transparent dielectric film having a refractive index of between about 1.7 and about 2.4, the first infrared-reflective film being positioned directly over the inner coat, and the coating comprising a middle coat positioned between the first and second infrared-reflective films, the middle coat having an optical thickness and comprising at least one transparent dielectric film, wherein the coating has a ratio defined as the optical thickness of the inner coat divided by the optical thickness of the middle coat, said ratio being between about 0.12 and about 0.2, wherein the insulating glass unit has a total visible transmittance of between about 0.36 and about 0.44 and an exterior reflected color characterized by an ah color coordinate of between about −
- 0.75 and about −
3.25 and a bh color coordinate of between about −
2.25 and about −
4.75.
- 0.75 and about −
Specification