Electrochromic display device with improved erasing characterist

Details Electrochromic display device with improved erasing characterist Electrochromic display device with improved erasing characterist

1980-07-18

1982-08-17

Davie, James W.

G02F 117

Patent

active

043446744

ABSTRACT:
An electrochromic device having an electrochromic layer of persistent electrochromic material such as tungsten oxide, and an electrolyte layer and a counter electrode which comprises an oxidizing agent which has oxidizing electrode potential more negative than the electrochromic layer to provide a stored charge for erasing color from the electrochromic layer, and to increase the emf of the charge used for the erase function. Examples of suitable oxidizing agents are manganese dioxide and chromic oxide.

REFERENCES:
patent: 3978007 (1976-08-01), Giglia et al.
patent: 4174152 (1979-11-01), Giglia et al.

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