Patent ID: 8289609

Claim:
An electrochromic device having controlled transmission or reflection of at least one electrically controllable active area (CDEF), comprising, on a carrier substrate, a multilayer stack comprising at least, in succession: a layer forming a lower electrically conductive electrode; various functional layers, at least one of which is an electrochromic layer; and a layer forming an upper electrically conductive electrode, in which device: at least one selective partition passes through the upper electrode and the various layers separating the upper electrode from the lower electrode without passing through the lower electrode, the at least one selective partition dividing at least one surface of the upper electrode into two regions electrically isolated from each other, namely a free region and an active region containing the active area (CDEF); at least one total partition passes through the upper electrode and the various layers separating the upper electrode from the substrate, the at least one total partition dividing at least one surface of the lower electrode into two regions electrically isolated from each other, namely a free region and an active region containing the active area (CDEF); at least one free region of the upper electrode receives a first current-supply connector soldered to the active region of the lower electrode; and the active region of the upper electrode is in electrical contact with a connection unit connected to a second current-supply connector, which is electrically isolated from the free region connected to the lower electrode.