Electrochromic indicator

Details Electrochromic indicator Electrochromic indicator

1978-12-18

1981-06-09

Davie, James W.

G02F 117

Patent

active

042721636

ABSTRACT:
The electrochromic indicator according to the invention is a multilayer structure and comprises in a sandwich layered arrangement an optically transparent first substrate, an optically transparent first electrode, a layer of a solid inorganic electrochromic material, and a layer of an electrolyte. Interposed between the electrolyte layer and a second electrode is a layer which is a film of an oxidation-reduction polymer, or a filled polymer film, or a paste containing an oxidized form (Ox) and a reduced form (Red) of compounds which produce on the second electrode a reversible oxidation-reduction reaction of the following type:

REFERENCES:
patent: 3521941 (1970-07-01), Deb et al.
patent: 3944333 (1976-03-01), Leibowitz
patent: 4068928 (1978-01-01), Meyers et al.
patent: 4116545 (1978-09-01), Reddy
patent: 4175838 (1979-11-01), Randin

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