The present invention is directed to a display device which comprises two
layers of insulating substrate, at least the substrate on the viewing
side is transparent, an array of display cells sandwiched between the two
layers of substrate, a writing means, and optionally an erasing means to
magnetically or electrically erase the image. The display cells are
filled with a dispersion of magnetic particles which may be charged or
non-charged. The display of the invention eliminates the use of the
transparent conductor film, such as ITO, on the viewing side. Therefore,
the displays of this invention are more cost effective, more flexible and
durable and capable of higher image contrast ratio and higher reflectance
in the Dmin area.