Patent ID: 6207083
Filing Date: 2001-03-27
Classification: C09K,G02F

Abstract:
A method for filling a large area electrochromic window having an electrochromically active area of at least about 110 cm.sup.2, 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.degree. C.;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; andsealing said gap in said peripheral seal of said window.