Method for filling large area electrochromic windows

  • US 6,207,083 B1
  • Filed: 11/08/1999
  • Issued: 03/27/2001
  • Est. Priority Date: 11/29/1989
  • Status: Expired due to Fees
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First Claim
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1. A method for filling a large area electrochromic window having an electrochromically active area of at least about 110 cm2, including two spaced-apart plates, each plate having an inwardly facing transparent conductive surface, said spaced plates being separated around their peripheries by a peripheral seal having a gap therein, said peripheral seal enclosing an area of each of said plates to define a cavity within said window, said filling method comprising:

  • placing said window in a chamber along with a container of a liquid medium comprising electrochromic material and evacuating said chamber;

    said liquid medium comprising an organic solvent having a vapor pressure of less than 3.2 mm of mercury at 25°


    lowering said window into said container of liquid medium such that said gap is located under the surface of said liquid medium;

    exposing said liquid medium to a source of inert gas of pressure greater than that in said cavity within said window to thereby cause said medium to flow into said cavity of said window;

    removing said window from said container; and

    sealing said gap in said peripheral seal of said window.

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