Electrochromic structures

  • US 6,239,898 B1
  • Filed: 11/30/1998
  • Issued: 05/29/2001
  • Est. Priority Date: 11/30/1998
  • Status: Expired due to Term
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First Claim
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1. An electrochromic structure comprising, in combination, first and second spaced visible light transparent elements, one side of said first element confronting said second element including a first visible light transmissive electrically conductive layer, one side of said second element confronting said first element including a second visible light transmissive electrically conductive layer, said structure having a chamber disposed between said first and second visible light transmissive electrically conductive layers on said first and second elements, an electrochromic reversibly variable visible light transmittance medium in said chamber in contact with one of said first or second visible light transmissive electrically conductive layers, one of said first or second transparent elements having a partially visible light reflective layer thereon, wherein said partially visible light reflective layer is in contact with said electrochromic medium, and means electrically connecting both said visible light transmissive electrically conductive layers on said first and second elements to apply an electrical potential to said electrochromic medium to cause variations in the visible light transmittance of said electrochromic medium.

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