Electrochromic devices having no positional offset between substrates
First Claim
1. An electrochromic device comprising:
- a front element having a peripheral edge, a front surface, and a rear surface having a first layer of electrically conductive material disposed thereon;
a rear element having a peripheral edge, a front surface, and a rear surface, said front surface of said rear element having a second layer of electrically conductive material disposed thereon;
an electrochromic material; and
a seal provided to sealably bond said elements together to define a chamber in which said electrochromic material is disposed, said chamber having a thickness defined by a spacing between said first and second layers of electrically conductive material, wherein said seal has at least one electrically conductive region and at least one electrically nonconductive region,wherein along a cross section of said seal, said electrically conductive region of said seal extends less than all of the thickness of said chamber and said nonconductive region extends a portion of the thickness of said chamber.
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Accused Products
Abstract
To allow an electrochromic device to have little or no offset between its front and rear elements, an electrical conductor may be provided to electrically couple a portion of a first conductive layer provided on the rear surface of the front element with a portion of a second conductive layer provided on the front surface of the rear element. The electrical conductor may be in the form of a conductive portion of the seal. To prevent shorting across the electrochromic medium, at least one of the first and second conductive layers is separated into a first portion and a second portion that is electrically isolated from the first portion and is in electrical contact with the electrochromic material. An elastomeric bezel may be utilized. Also, an edge seal may optionally be employed so as to reduce the need or width of the bezel.
238 Citations
34 Claims
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1. An electrochromic device comprising:
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a front element having a peripheral edge, a front surface, and a rear surface having a first layer of electrically conductive material disposed thereon; a rear element having a peripheral edge, a front surface, and a rear surface, said front surface of said rear element having a second layer of electrically conductive material disposed thereon; an electrochromic material; and a seal provided to sealably bond said elements together to define a chamber in which said electrochromic material is disposed, said chamber having a thickness defined by a spacing between said first and second layers of electrically conductive material, wherein said seal has at least one electrically conductive region and at least one electrically nonconductive region, wherein along a cross section of said seal, said electrically conductive region of said seal extends less than all of the thickness of said chamber and said nonconductive region extends a portion of the thickness of said chamber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. An electrochromic device comprising:
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a front element having a peripheral edge, a front surface, and a rear surface having a first layer of electrically conductive material disposed thereon; a rear element having a peripheral edge, a front surface, and a rear surface, said front surface of said rear element having a second layer of electrically conductive material disposed thereon; an electrochromic material; a seal provided to sealably bond said elements together to define a chamber in which said electrochromic material is disposed; a first region of electrically conductive epoxy disposed between a first peripheral portion of said elements; a second region of electrically conductive epoxy disposed between a second peripheral portion of said elements; and an electrically conductive clip electrically connected to one of said first and second regions of electrically conductive epoxy, said electrically conductive clip being attached to said rear surface of said rear element. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. An electrochromic device comprising:
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a front element having a peripheral edge, a front surface, and a rear surface having a first layer of electrically conductive material disposed thereon; a rear element having a peripheral edge, a front surface, and a rear surface, said front surface of said rear element having a second layer of electrically conductive material disposed thereon; an electrochromic material; and a seal provided to sealably bond said elements together to define a chamber in which said electrochromic material is disposed, wherein said seal has at least one electrically conductive region wherein said electrically conductive region of said seal extends less than all of the height of said seal, wherein an interface between said seal and said rear element provides an oxygen penetration path length through which oxygen would have to travel to enter said chamber, wherein the portion of the path length extending along the peripheral edge of said rear element is longer than the portion of the path length extending along the front surface of said rear element.
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31. An electrochromic device comprising:
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a front element having a peripheral edge, a front surface, and a rear surface having a first layer of electrically conductive material disposed thereon; a rear element having a peripheral edge, a front surface, and a rear surface, said front surface of said rear element having a second layer of electrically conductive material disposed thereon; an electrochromic material; and a seal provided to sealably bond said elements together to define a chamber in which said electrochromic material is disposed, said chamber having a thickness defined by a spacing between said first and second layers of electrically conductive material, wherein said seal has at least one electrically conductive component and another component comprising a different material than said electrically conductive component, wherein along a cross section of said seal, said electrically conductive component extends less than all of the thickness of said chamber and said another component extends the remainder of the thickness of said chamber. - View Dependent Claims (32, 33, 34)
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Specification