公开(公告)号：DE2815307A1

公开(公告)日：1978-10-26

申请号：DE2815307

申请日：1978-04-08

Applicant: IBM

Inventor： BARCLEY DONALD JOHN ,  BIRD COLIN LEONARD ,  LOWE ANTHONY CYRIL

IPC: G02F1/15 ,  G02F1/153 ,  G02F1/155 ,  G02F1/163 ,  G02F1/17 ,  G09F9/30 ,  G09F9/00

Abstract: An electrochromic display device has an improved counter electrode arrangement. The device has a plurality of display elctrodes and a counter electrode in contact with a first electrolyte of a primary redox system. The counter electrode is charged to a predetermined potential. A secondary redox system is associated with the primary redox system. A secondary electrode in the secondary redox system is electrically connected to the counter electrode to maintain the charge on the counter electrode at a predetermined potential.