Electrophoretic particles and dielectrophoretic particles are included together in a unit pixel. Each of the electrophoretic particles and the dielectrophoretic particles includes two kinds of particles having different electric properties. The electrophoretic particles include positively charged particles...http://www.google.com/patents/US8018430?utm_source=gb-gplus-sharePatent US8018430 - Electro-dielectro-phoretic display device and method thereof
