All solid-state complementary electrochromic display device

Details All solid-state complementary electrochromic display device All solid-state complementary electrochromic display device

1982-12-10

1984-07-10

Roskoski, Bernard

Horology: time measuring systems or devices

Displays or display device details

Optical

368239, 340763, 340785, 340812, G04B 2302

Patent

active

044590350

ABSTRACT:
EC display device suitable for drive by means of a charge transfer method which is one of the methods for realizing a constant charge drive, in which all the members comprise solid materials only and a reduction coloration type EC material and an oxidation coloration type EC material are combined. The device has means for applying a voltage between each of the EC segments, with the counter electrode shut off, and a fixed quantity of electric charge is transferred from one EC segment to another. The counter EC layer provided on the counter electrode functions as a donnor or an acceptor of protons so as to activate the EC reactions and this counter layer is colored or bleached by itself, producing double contrast of the display.

REFERENCES:
patent: 4306774 (1981-12-01), Nicholson
patent: 4350414 (1982-09-01), Takahashi
patent: 4392721 (1983-07-01), Giglia et al.
patent: 4401983 (1983-08-01), Tabata et al.
patent: 4401984 (1983-08-01), Tabata et al.

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