ELECTROPHORETIC DISPERSION INCLUDING CHARGED PIGMENT PARTICLES, UNCHARGED ADDITIVE NANOPARTICLES, AND UNCHARGED NEUTRAL DENSITY PARTICLES

摘要

The present invention is directed to an electrophoretic dispersion comprising charged pigment particles, in particular, an electrophoretic dispersion including both uncharged or lightly charged neutral buoyancy particles and uncharged or lightly charged additive particles. The combination improves the performance of an electrophoretic display, in particular the color state stability over time.