Patent
1987-12-24
1989-05-16
LaRoche, Eugene R.
G02F 101, G02F 117
Patent
active
048304719
ABSTRACT:
This invention teaches uncolored copper oxide as a new electrochromic material. An electrochromic device is constructed from this material by forming either an anodic electrochromic device or a cathodic electrochromic device. A fast ion conductor is also provided which is capable of generating ions when an electric field is applied thereto. The fast ion conductor also permits ion movement therethrough while prohibiting electron movement therethrough. The fast ion conductor and the uncolored copper oxide are arranged between an anode and a cathode to form an electrochromic device. Preferably, the copper oxide is in a layer next to one of the electrodes. If the copper oxide layer is next to the cathode, the device is a cathodic device which can generate a blue color. If the copper oxide layer is next to the anode, the device is an anodic device and can be operated to produce either a pink or a green color depending upon the amount of voltage applied between the anode and the cathode.
REFERENCES:
patent: 3521941 (1970-07-01), Deb et al.
patent: 3943528 (1976-03-01), Camphausen
patent: 4175838 (1979-11-01), Randin
patent: 4294520 (1981-10-01), Inoue et al.
patent: 4326777 (1982-04-01), Kohara et al.
Ford Motor Company
LaRoche Eugene R.
May Roger L.
McCutcheon Nathan W.
Melotik Lorraine S.
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