Patent ID: 6697185
Filing Date: 2004-02-24
Classification: C09K,G02F

Abstract:
An electrochromic device, comprising:(a) a first substantially transparent substrate having an electrically conductive material associated therewith; (b) a second substrate having an electrically conductive material associated therewith; (c) an electrochromic medium contained within a chamber positioned between the first and second substrates which comprises: (1) a solvent; (2) a cathodic electroactive material; (3) an anodic electroactive material, wherein at least one of the anodic and cathodic electroactive materials is electrochromic; and (4) a color-stabilizing additive; and (d) wherein the electrochromic device exhibits an absolute value of &Dgr;a* of less than 3.00 after being exposed to 85 degrees centigrade for approximately 4,300 hours.