A microcapsule includes an electrophoretic dispersion liquid including at least one kind of electrophoretic particle having a polarity, and a capsule body encapsulating the electrophoretic dispersion liquid and made of a polymeric material including one of a nonpolar resin without having a polarity and...http://www.google.fr/patents/US7719757?utm_source=gb-gplus-shareBrevet US7719757 - Microcapsule, electrophoretic display sheet, electrophoretic display device, and electronic apparatus
