The present invention relates to an improved EPD which comprises both the traditional
up/down switching and the in-plane switching modes. The monochrome EPDs of the
present invention are capable of displaying highlight color of choice which is
different from the text. For example, white background, blue text, and red highlight
can be shown in any selected areas of the display. Furthermore, the full color
EPDs of the present invention are capable of displaying high contrast images of
high color saturation. Both high quality black and white states are possible in
the full color displays of the present invention. The EPDs of the present invention
do not need complex circuitry design, and are compatible with low cost and high
yield roll-to-roll manufacturing processes. The EPD cells of the present invention
may have opaque partition walls, or a black matrix top surface of the partition
walls or a combination thereof.