Patent ID: 7875307

Claim:
A method for forming a multi-color electrophoretic display, the method comprising: providing microcapsules, wherein the microcapsules comprise: a shell that is transparent; and a display medium within the shell, wherein the display medium is comprised of either (a) at least two sets of differently colored particles in a substantially clear fluid, or (b) at least one set of colored particles in a differently colored fluid; transferring the microcapsules to a substrate, wherein the microcapsules on the substrate define a display layer of microcapsules on the substrate; and after the transferring, positioning a conductive substrate on to the substrate, wherein the substrate is located between the display layer and the conductive substrate, wherein the conductive substrate applies an electric field to the display layer, wherein the sets of particles of each microcapsule in the display layer are movable within the microcapsule by the electric field.