An electrophoretic display device capable of realizing a stable memory characteristic
without relying on a circuit-open state is provided. The electrophoretic display
device has a cell structure including at least two electrodes, fixing surfaces
each associated with one of the at least two electrodes an electrophoretic layer
disposed in the cell and comprising an insulating liquid and colored charged particles
disposed in the electrophoretic layer, and voltage application device for applying
a voltage between the electrodes thereby causing migration of the colored charged
particles toward and collective attachment onto one of the fixing surfaces; wherein
the fixing surfaces are provided with a charged film having a constant surface
charge of a polarity opposite to that of the colored charged particles, regardless
of a polarity of electricity supplied to the associated electrodes.