Patent ID: 8670173

Claim:
A moisture-resistant suspended particle device (SPD) film comprising: a) a cured suspended particle device emulsion having a plurality of uncrosslinked droplets of a liquid light valve suspension distributed throughout the cured emulsion; b) first and second glass or plastic sheets, said sheets located outwardly from and sandwiching said cured emulsion wherein, located on an inner aspect of each of said first and said second sheet, adjacent said cured emulsion, is a thin, transparent electrically conductive coating, said coatings serving as an electrode to permit passage of an applied electric field through said cured emulsion, and c) a moisture-resistant barrier located around an entire outer peripheral edge portion of said sheets, wherein the barrier is comprised of a barrier material that eliminates or at least reduces passage of moisture from outside said sheets into the cured emulsion, thus preventing development of a light frame pattern in said cured emulsion otherwise caused by said moisture.