Patent ID: 7167155

Claim:
An electrophoretic display comprising: at least one capsule containing a suspending fluid and at least one particle; a cyan-colored electrode disposed adjacent said capsule; a magenta-colored electrode disposed adjacent said capsule, said magenta-colored electrode spaced apart from said cyan-colored electrode; a yellow-colored electrode disposed adjacent said capsule, said yellow-colored electrode spaced apart from said cyan-colored electrode and said magenta-colored electrode; and a white electrode adjacent said capsule, 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 capsule to locations adjacent said cyan-colored electrode, said magenta-colored electrode, and said yellow-colored electrode causing said capsule 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 capsule to a location adjacent said white electrode causing said capsule to appear substantially black.