公开(公告)号：DE3373557D1

公开(公告)日：1987-10-15

申请号：DE3373557

申请日：1983-06-30

Applicant: IBM

Inventor： MARTIN DAVID HUGH ,  SPANNER RAYMOND ARTHUR

IPC: G02F1/163 ,  G09G3/34 ,  G09G3/38 ,  G02F1/17

Abstract: Completion of potentiostatic erasure of an electrochromic display is detected by monitoring the erase current supplied to addressed display electrodes by potentiostatic erase drive means. The occurrence of a fall in erase current, corresponding to completion of the erasure of the addressed display electrodes, is detected, preferably by a threshold detector, and an erase completion indication produced. This indication effects disconnection of the erase current path.