Patent ID: 7956841

Claim:
An electrophoretic display comprising: an encapsulated electrophoretic display medium comprising a plurality of cavities disposed in a polymeric matrix, at least one of the plurality of cavities containing a suspending fluid and a plurality of white particles; a cyan-colored electrode disposed adjacent said cavity; a magenta-colored electrode disposed adjacent said cavity, said magenta-colored electrode spaced apart from said cyan-colored electrode; a yellow-colored electrode disposed adjacent said cavity, said yellow-colored electrode spaced apart from said cyan-colored electrode and said magenta-colored electrode; and a white electrode adjacent said cavity, said white electrode spaced apart from said cyan-colored electrode, said yellow-colored electrode, and said magenta-colored electrode; wherein application of a voltage potential to said cyan-colored electrode, magenta-colored electrode, and yellow-colored electrode causes said white particles to migrate within the cavity to locations adjacent said cyan-colored electrode, said magenta-colored electrode, and said yellow-colored electrode causing said cavity to appear white, and wherein application of a second voltage potential to said cyan-colored, said magenta-colored, and said yellow-colored electrode causes said white particles to migrate within said cavity to a location adjacent said white electrode causing said cavity to appear substantially black.