Driver circuit for electrochromic displays

Details Driver circuit for electrochromic displays Driver circuit for electrochromic displays

1977-08-19

1981-11-24

Trafton, David L.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

307297, 340785, 340813, 350357, G08B 536

Patent

active

043027512

ABSTRACT:
A constant-voltage circuit is interposed between a power source and a driver circuit for an electrochromic display. The constant-voltage circuit functions to compensate for variations of an output level of the power source in order to stabilize coloration and bleaching operations. Switching means are interposed between the power source and the constant-voltage circuit for placing the constant-voltage circuit in an operative condition only when the coloration operation or the bleaching operation is conducted.

REFERENCES:
patent: 3289092 (1966-11-01), Hanson
patent: 3613351 (1971-10-01), Walton
patent: 3714469 (1973-01-01), Uchida
patent: 3950077 (1976-04-01), Jasinski
patent: 3951521 (1976-04-01), Findl
patent: 4044546 (1977-08-01), Koike
patent: 4045791 (1977-08-01), Fukai et al.
patent: 4057739 (1977-11-01), Otake

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