A method for producing electrophoretic particles includes dispersing particles having a charge on the surfaces thereof in an polar dispersion medium; adding a first polymerizable surfactant including a first polar group having a polarity opposite to the charge of the surfaces of the particles, a hydrophobic group, and a polymerizable group to the polar dispersion medium and mixing the liquid; adding a second polymerizable surfactant including a second polar group, a hydrophobic group, and a polymerizable group to the polar dispersion medium and emulsifying the mixture; and adding a polymerization initiator to induce polymerization reaction, thereby preparing electrophoretic particles in which the particles are coated with an organic polymer. In the method, the charge polarity and the amount of charge of the electrophoretic particles are controlled by setting the polarity of the second polar group included in the second polymerizable surfactant, and at least one condition of the number of the second polar groups in second polymerizable surfactant, the valence of the second polymerizable surfactant, and the molar amount of the second polymerizable surfactant added.

 
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< Electrophoretic display and process for its manufacture

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