Prolonged coloration electrochromic assembly

  • US 5,076,673 A
  • Filed: 08/10/1990
  • Issued: 12/31/1991
  • Est. Priority Date: 08/10/1990
  • Status: Expired due to Fees
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First Claim
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1. An electrochromic assembly comprising:

  • at least first and second optically aligned electrochromic devices defined by a sheet of transparent material, first and second layers of electrochromic material adjacent opposing surfaces of said sheet, the transmittance of each of said layers being variable when an electrical field is applied thereacross, and electrical means for applying an electrical field across each of said layers of electrochromic material; and

    switch means for selectively applying electrical power to said first and second devices, said switch means including means for alternately applying electrical power to said first and second devices in order to cause coloration of one of said devices while bleaching the other of said devices and vice versa.

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