Controlled-transparency electrochromic device
First Claim
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1. 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.
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Abstract
The present invention relates to an electrochromic device comprising:
- at least one partition (12) that separates the surface of the upper electrode (9) into two regions isolated from each other, namely a free region (9a) and an active region;
- at least one partition (5) that separates the surface of the lower electrode (4) into two regions electrically isolated from each other, namely a free region (4a) and an active region (4b);
- at least one free region (9a) of the upper electrode (9) receives a first current-supply connector (15) soldered to the active zone (4b) of the lower electrode (4); and
- the active area (9b) of the upper electrode (9) is in electrical contact with the connection means (20, 21a) connected to a second current-supply connector (21) electrically isolated from the free zone (9a) connected to the lower electrode (4).
22 Citations
22 Claims
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1. 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:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A process for fabricating an electrochromic device having controlled transmission or reflection of at least one electrically controllable active area, comprising, on a carrier substrate, a multilayer stack comprising at least, in succession;
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an electrically conductive layer forming a lower electrode; various functional layers at least one of which is an electrochromic layer; and an electrically conductive layer forming an upper electrode, the process comprising; (A) depositing in succession, onto at least part of the surface of the substrate, the electrically conductive layer forming the lower electrode, the various functional layers and the electrically conductive layer forming the upper electrode; (B) producing, starting from the upper electrode, at least one selective partition that passes through the upper electrode as well as the other layers separating the upper electrode from the lower electrode without passing through the latter, each selective partition dividing at least the 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); (C) producing, starting from the upper electrode, at least one total partition that passes through the upper electrode as well as the layers which separate the upper electrode from the substrate, each total partition dividing at least the surface of the lower electrode into two regions electrically isolated from one another, namely a free region and an active region; (D) soldering a current-supply connector to the free region of the upper electrode and to the active region of the lower electrode located in line with the latter; and (E) placing at least one connection unit, which is electrically connected to a current-supply connector, in electrical contact with the active region of the upper electrode. - View Dependent Claims (20, 21, 22)
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Specification