Display device

Details Display device Display device

1982-01-06

1985-05-07

Trafton, David L.

Communications: electrical

Land vehicle alarms or indicators

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

340811, 350357, G09G 334

Patent

active

045161208

ABSTRACT:
A display device incorporating an electrochromic display cell is provided with means whereby each segment electrode of the electrochromic display cell can be set into a completely electrically isolated state after a condition of coloration of a corresponding display element has been established. Since no leakage current is permitted to flow between the segment electrode and the drive transistors coupled thereto, a charge is stored on the segment electrode which maintains the coloration condition over a considerably longer period of time than has been possible hitherto, thus enabling an electrochromic display device to be realized having a very low level of power consumption.

REFERENCES:
patent: 4123671 (1978-10-01), Aihara et al.
patent: 4210909 (1980-07-01), Hamada et al.

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