Patent ID: 7349143

Claim:
An electrochromic device comprising: a front element having a peripheral edge, a front surface, and a rear surface having a first layer of electrically conductive material disposed thereon; a rear element having a peripheral edge, a front surface, and a rear surface, said front surface of said rear element having a second layer of electrically conductive material disposed thereon; an electrochromic material; and a seal provided to sealably bond said elements together to define a chamber in which said electrochromic material is disposed, said chamber having a thickness defined by a spacing between said first and second layers of electrically conductive material, wherein said seal has at least one electrically conductive region and at least one electrically nonconductive region, wherein along a cross section of said seal, said electrically conductive region of said seal extends less than all of the thickness of said chamber and said nonconductive region extends a portion of the thickness of said chamber.