Electrochromic display device

Details Electrochromic display device Electrochromic display device

1977-12-15

1980-01-08

Davie, James W.

G02F 117

Patent

active

041825519

ABSTRACT:
An electrochromic display having enlarged surface area of the electrochromic material for rapid coloration and rapid bleaching yet fabricated so as to prevent corrosion of the electrode by the electrolyte. In a first embodiment, the display includes a conductive electrode formed on a substrate; a protective layer formed on the conductive electrode; a porous layer of an electrochromic material formed on the protective layer; a counter electrode formed apart from the porous layer; and an electrolyte disposed between the porous layer and the counter electrode. The protective layer is fabricated from a dense layer of an electrochromic material and the conductive electrode is fabricated from a metal non-reactive with the electrolyte. The porous layer is in direct contact with the conductive electrode. In a second embodiment, the electrode is made from a conductive material that is non-reactive with the electrolyte.

REFERENCES:
patent: 3807832 (1974-04-01), Castellion
patent: 3975086 (1976-08-01), Leibowitz
patent: 3978007 (1976-08-01), Giglia et al.
patent: 4039253 (1977-08-01), Jain

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