Patent ID: 7365732
Filing Date: 2008-04-29
Classification: G02F

Abstract:
1. An electrophoretic display device comprising: a first substrate and a second substrate disposed opposite each other; a dielectric liquid filled in a gap between the first substrate and the second substrate; a plurality of charged electrophoretic particles dispersed in the dielectric liquid; a first electrode and a second electrode disposed on the first substrate to define a pixel; a partition wall disposed on at least one of the first substrate and the second substrate between adjacent pixels to prevent migration of the charged electrophoretic particles between the adjacent pixels; and a third electrode disposed adjacent to the partition wall, wherein the charged electrophoretic particles divide and a portion migrate from a surface of the first electrode to a surface of the second electrode and another portion migrate to a side surface of the partition wall where the third electrode is disposed to expose the first electrode surface to exhibit a first display state and wherein the charged electrophoretic particles migrate in opposite directions from their position in the first display state to cover the first electrode surface to exhibit a second display state.