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.
