Patent ID: 8089682

Claim:
An electrochromic device comprising a pair of a transparent electrode and an opposite electrode being disposed opposite to each other, and an electrochromic material and an electrolyte between the transparent electrode and the opposite electrode, wherein the electrochromic material includes polyphthalate, wherein the polyphthalate is formed by polymerization of one or more ortho, meta or para-phthalate compounds comprising at least two terminal double bonds represented by Formula 1: wherein R 1 , R 2 , R 3 and R 4 are independently hydrogen, hydroxy, linear, branched or cyclic C 1 -C 10 alkyl, C 1 -C 10 alkoxyalkyl, linear, branched or cyclic C 1 -C l0 alkoxy, C 6 -C 12 aryl, C 2 -C 12 heteroaryl, nitro, or amino, and n 1 and n 2 are each an integer of 1 to 10.