1978-02-13
1979-09-11
Davie, James W.
G02F 117
Patent
active
041673093
ABSTRACT:
An electrochromic display device adapted to be accurately erased has an opaque counter electrode in the shape of a pattern of lines, preferably reticulate, on the underside of the face of the display device through which the display is viewed. The counter electrode is brought to a predetermined potential either by trapping a suitable material capable of a reversible redox reaction at the counter electrode or by initially charging the counter electrode with heptyl vilogen cation radical. This enables voltage erase to be used.
REFERENCES:
patent: 3712709 (1973-01-01), Kenworthy
patent: 4018508 (1977-04-01), McDermott et al.
Barclay Donald J.
Bird Colin L.
Lowe Anthony C.
Martin David H.
Davie James W.
International Business Machines - Corporation
Kieninger Joseph E.
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