Electrophoretic display device

摘要

An electrophoretic display device ( 1 ) comprises at least one pixel ( 10 ) with an electrophoretic medium, and at least two electrodes ( 6, 7 ), as well as drive means ( 4 ) via which the pixels can be brought to different optical states comprising an applicator means for applying a voltage difference between the electrodes. The grey levels of the cells are set by providing a steady low voltage to the cells. A pulse voltage may in preferred embodiments be used to bring the grey level close to the intended level.