Seal for electrochromic devices
First Claim
1. An electrochromic mirror, comprising front and rear spaced elements, each having front and rear surfaces, said rear surface of said front element having a layer of transparent conductive material disposed thereon, at least a major portion of said front surface of said rear element having a reflector/electrode disposed thereon, said mirror further comprising a seal member bonding said front and rear spaced elements together in a spaced-apart relationship to define a chamber containing an electrochromic medium, said seal member comprising a sealing system and an adhesion promoter, said adhesion promoter comprising a first region that is a phosphorous- or sulfur-containing organic moiety, where said reflector/electrode is effective to reflect light through said medium and said front element when said light reaches said reflector/electrode after passing through said front element and said electrochromic medium.
1 Assignment
0 Petitions
Accused Products
Abstract
An improved seal member is provided as a part of an electrochromic device to bond two glass elements together in a spaced-apart relationship. In one embodiment the seal member provides improved adhesion to a reflector/electrode on the third surface of an electrochromic mirror, or to a layer of metal on the second or third surface for an electrochromic light filter. This seal member comprises a mixture of an organic resin sealing system and an adhesion promoter, where the adhesion promotor comprises a first and a second region, where the first region interacts with the reflector/electrode or the metal layer, and a second region that interacts with the organic resin sealing system, and may even chemically react with the organic resin sealing system. In another embodiment the seal member is provided with a coefficient of thermal expansion that is closer to glass than a standard epoxy sealing system.
206 Citations
43 Claims
- 1. An electrochromic mirror, comprising front and rear spaced elements, each having front and rear surfaces, said rear surface of said front element having a layer of transparent conductive material disposed thereon, at least a major portion of said front surface of said rear element having a reflector/electrode disposed thereon, said mirror further comprising a seal member bonding said front and rear spaced elements together in a spaced-apart relationship to define a chamber containing an electrochromic medium, said seal member comprising a sealing system and an adhesion promoter, said adhesion promoter comprising a first region that is a phosphorous- or sulfur-containing organic moiety, where said reflector/electrode is effective to reflect light through said medium and said front element when said light reaches said reflector/electrode after passing through said front element and said electrochromic medium.
- 23. An electrochromic device, comprising front and rear spaced elements, each having front and rear surfaces, said rear surface of said front element and said front surface of said rear element having a layer of transparent conductive material disposed thereon, where one of said layers of transparent conductive material is a layer of metal, said device further comprising a seal member bonding said front and rear spaced elements together in a spaced-apart relationship to define a chamber containing an electrochromic medium, said seal member comprising a sealing system and an adhesion promoter, where said adhesion promoter comprising a phosphorous- or sulfur-containing organic moiety.
Specification