Patent ID: 7106489

Claim:
Electrochromic device comprising a pair of glass or plastic plates or plastic films of which at least one plate or film, preferably both plates or films, are provided an in each case one side with an electrically conductive coating, of which at least one plate or film and its conductive coating are transparent, of which the other may be mirrored, and of which in the case of at least one of the two plates or films the electrically conductive layer can be divided into separate, individually contacted area segments, where the plates or films are joined together via a sealing ring on the sides of their conductive coating, and the volume formed by the two plates or films and the sealing ring is filled with an electrochromic medium which comprises at least one reducible electrochromic substance OX 2 and at feast one oxidizable electrochromic substance RED 1 , characterized in that one OX 2 corresponds to one of the formula wherein another electrochromic substance of the formula (CC) or another electrochromic substance OX 2 or RED 1 may be attached via the bridge B; wherein the formula (CC) maybe pert of one of the formulae in which R 201 and —B—R 202 , independently of one another, are methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, benzyl, phenethyl, phenylpropyl, phenylbutyl or phenyl, or R 201 and R 202 in formula (CCI) together are a direct bond, and R 201 in formula (CCII), (CCIII) and (CCIV) may be —B—[OX 2 ′—B′—] r —R 203 or —B—[RED 1 ′—B″—] u —R 204 or —B—[RED 1 ′—B″—] u —[OX 2 ′—B′—] r —R 205 , Z 201 is CH 2 , C═O or o-phenylene, the rings C and D or the rings E And F, respectively, may be linked via a —CH═CH—CH═CH— bridge, B, B′ and B″, independently of one another, are a bivalent bridge, —B′—R 203 , —B″—R 204 and —B′—R 205 , independently of one another, are hydrogen or methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, benzyl, phenethyl, phenylpropyl, phenylbutyl or phenyl, OX 2 ′ is the radical of a reversibly electrochemically reducible redox system, and RED 1 ′ is the radical of a reversibly electrochemically oxidizable redox system, k is an integer from 2 to 1000, I, r and u, independently of one another, are integers from 1 to 100, t and w, independently of one another, are integers from 1 to 1000, and X − is an anion.