Multi-pane electrochromic windows
First Claim
Patent Images
1. A window unit comprising:
- a first substantially transparent substrate and a first electrochromic device disposed thereon;
a second substantially transparent substrate and a second electrochromic device disposed thereon; and
a sealing separator between the first and second substantially transparent substrates, which sealing separator defines, together with the first and second substantially transparent substrates, an insulating glass unit having an interior region that is thermally insulating,wherein both of the first and second electrochromic devices are two-state electrochromic devices and the window unit has at least four optical states,wherein at least one of the first and second electrochromic devices is an entirely solid state and inorganic device, andwherein the interior region contains an inert gas.
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Abstract
Window units, for example insulating glass units (IGU'"'"'s), that have at least two panes, each pane having an electrochromic device thereon, are described. Two optical state devices on each pane of a dual-pane window unit provide window units having four optical states. Window units described allow the end user a greater choice of how much light is transmitted through the electrochromic window. Also, by using two or more window panes, each with its own electrochromic device, registered in a window unit, visual defects in any of the individual devices are negated by virtue of the extremely small likelihood that any of the visual defects will align perfectly and thus be observable to the user.
131 Citations
79 Claims
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1. A window unit comprising:
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a first substantially transparent substrate and a first electrochromic device disposed thereon; a second substantially transparent substrate and a second electrochromic device disposed thereon; and a sealing separator between the first and second substantially transparent substrates, which sealing separator defines, together with the first and second substantially transparent substrates, an insulating glass unit having an interior region that is thermally insulating, wherein both of the first and second electrochromic devices are two-state electrochromic devices and the window unit has at least four optical states, wherein at least one of the first and second electrochromic devices is an entirely solid state and inorganic device, and wherein the interior region contains an inert gas. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A method of fabricating a window unit, the method comprising:
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arranging, substantially parallel to each other, a first substantially transparent substrate with a first electrochromic device disposed thereon and a second substantially transparent substrate with a second electrochromic device disposed thereon; and installing a sealing separator between the first and second substantially transparent substrates, which sealing separator defines, together with the first and second substantially transparent substrates, an interior region in an insulating glass unit, said interior region thermally insulating, wherein both of the first and second electrochromic devices are two-state electrochromic devices and the fabricated window unit has at least four optical states, wherein at least one of the first and second electrochromic devices is an entirely solid state and inorganic device, and wherein the interior region contains an inert gas. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. A window unit comprising:
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a first substantially transparent substrate and an electrochromic device disposed thereon; a second substantially transparent substrate and a heatable transparent conductive oxide layer thereon; and a sealing separator between the first and second substantially transparent substrates, which sealing separator defines, together with the first and second substantially transparent substrates, an insulating glass unit having an interior region that is thermally insulating, wherein at least one of the first and second electrochromic devices is an entirely solid state and inorganic device, and wherein the interior region contains an inert gas. - View Dependent Claims (33, 34)
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35. A window unit comprising:
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a first substantially transparent substrate and a first electrochromic device disposed thereon; a second substantially transparent substrate and a second electrochromic device disposed thereon; and a sealing separator between the first and second substantially transparent substrates, which sealing separator defines, together with the first and second substantially transparent substrates, an insulating glass unit having an interior region that is thermally insulating, wherein at least one of the first and second electrochromic devices has intermediate state capability, wherein at least one of the first and second electrochromic devices is an entirely solid state and inorganic device, and wherein the interior region contains an inert gas. - View Dependent Claims (36, 37, 38)
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39. A window unit comprising:
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a first substantially transparent substrate and a first electrochromic device disposed thereon; a second substantially transparent substrate and a second electrochromic device disposed thereon; and a sealing separator between the first and second substantially transparent substrates, which sealing separator defines, together with the first and second substantially transparent substrates, an interior region that is thermally insulating, wherein the interior region contains an inert gas, wherein both of the first and second electrochromic devices are two-state electrochromic devices and the window unit has at least four optical states, and wherein the at least four optical states are; i) overall transmittance of between about 60% and about 90%; ii) overall transmittance of between about 15% and about 30%; iii) overall transmittance of between about 5% and about 10%; and iv) overall transmittance of between about 0.1% and about 5%. - View Dependent Claims (40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59)
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60. A method of fabricating a window unit, the method comprising:
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arranging, substantially parallel to each other, a first substantially transparent substrate with a first electrochromic device disposed thereon and a second substantially transparent substrate with a second electrochromic device disposed thereon; and installing a sealing separator between the first and second substantially transparent substrates, which sealing separator defines, together with the first and second substantially transparent substrates, an interior region, said interior region thermally insulating, wherein the interior region contains an inert gas, wherein both of the first and second electrochromic devices are two-state electrochromic devices and the fabricated window unit has at least four optical states, and wherein the at least four optical states are; i) overall transmittance of between about 60% and about 90%; ii) overall transmittance of between about 15% and about 30%; iii) overall transmittance of between about 5% and about 10%; and iv) overall transmittance of between about 0.1% and about 5%. - View Dependent Claims (61, 62, 63, 64, 65, 66, 67, 68, 69, 70)
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71. A window unit comprising:
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a first substantially transparent substrate and an electrochromic device disposed thereon; a second substantially transparent substrate and a heatable transparent conductive oxide layer thereon; and a sealing separator between the first and second substantially transparent substrates, which sealing separator defines, together with the first and second substantially transparent substrates, an interior region that is thermally insulating, wherein at least one transparent conductive oxide layer of the first and/or the second electrochromic devices is configured to be heated independently of operation of the electrochromic device of which it is a component, and wherein the interior region contains an inert gas. - View Dependent Claims (72, 73, 74)
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75. A window unit comprising:
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a first substantially transparent substrate and a first electrochromic device disposed thereon; a second substantially transparent substrate and a second electrochromic device disposed thereon; and a sealing separator between the first and second substantially transparent substrates, which sealing separator defines, together with the first and second substantially transparent substrates, an interior region that is thermally insulating, wherein at least one of the first and second electrochromic devices has intermediate state capability, and wherein the interior region contains an inert gas. - View Dependent Claims (76, 77, 78, 79)
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Specification