The present invention is directed to an electro-magnetophoresis display
having either the traditional up/down or dual switching mode. The display
cells are filled with an electro-magnetophoretic dispersion comprising
particles suspended in a solvent and the particles are both charged and
magnetized. The display of the invention prevents undesired movement of
the particles in the cells. The magnetic force generated by the magnetic
layer(s) eliminates the need to provide cells with a threshold voltage
high enough to avoid the cross talk and/or cross bias effects. In
addition, the dual switching mode allows the particles to move in the
up/down direction as well as the planar direction, thus providing a
multicolor display of high color quality at very low cost.