Patent ID: 6104372
Filing Date: 2000-08-15
Classification: G02F,G09F

Abstract:
A display device for the presentation of symbols, including a plurality of electrochemical cells, at least one of which functions as a display element and/or a battery, and at least one other of which functions as a photo-electrochemical cell, and further including electronic drive and control circuitry, said electrochemical cells comprisinga plurality of individually connectable conductive surface segments;a porous semiconductor layer provided on each said conductive surface segment;a counter electrode comprising a conducting surface layer provided in close proximity to said semiconductor layer;a first electrolyte disposed between said conducting surface layer and said semiconductor layer, and in contact with a fraction of said conductive surface segments, thereby constituting display elements and/or battery elements; anda second electrolyte disposed between said conducting surface layer and said semiconductor layer, and in contact with a remaining fraction of said conductive surface segments thereby constituting said photo-electrochemical cell.