In an electrophoretic display device, comprising: a pair of substrates
opposing to each other with a gap therebetween, a spacer keeping the gap
between the substrates to a predetermined extent, first electrodes and
second electrodes disposed on either one of the substrates, an insulating
liquid filling the gap between the substrates, and a plurality of charged
electrophoretic particles carried in the insulating liquid, the plurality
of charged electrophoretic particles being capable to move in response to
a voltage applied between the first and second electrodes; the display
region of the device is divided into pixels each having at least a pair of
the first and the second electrodes, at least one of the first electrodes
in a pixel, is disposed along and adjacent to the whole or a part of the
boundary of the pixel, and the one of the first electrodes in a pixel and
said one of the first electrodes in another pixel which are disposed
adjacently to each other vita the pixel boundary have the same potential.