G - Physics – 02 – F
Patent
G - Physics
02
F
345/6
G02F 1/13 (2006.01) G02F 1/15 (2006.01) G02F 1/163 (2006.01)
Patent
CA 1089061
ELECTROCHROMIC DISPLAY DEVICE Abstract of the Disclosure The invention relates to an electrochromic display device having a transparent container containing an indication electrode, a counter-electrode and an electrochromic solution contacting the electrodes. The improvement is that the counter- electrode is provided with a coating of a reduction product of the color displaying ions or an oxidation product of the color displaying ions of the electrochromic solution. By means of forming the coating of a color displaying product, when a current flows across the indication electrodes and counter-electrodes, the same redox reaction takes place at both electrodes but the reactions proceed in opposite directions. As a result, the redox reaction can be caused to proceed with a voltage lower than the redox potential of the reaction and hence, electrode contamination by additional electrolytic reaction products can be avoided thereby pro- longing the life of the device.
285827
Aoyama Takashi
Kohara Rikusei
Kirby Eades Gale Baker
Matsushita Electric Industrial Co. Ltd.
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