| 초록 |
Electrophoretic displays utilize the electromigration phenomena of charged nanoparticles in a dielectric medium. Their advantages include low power consumption, high contrast and high reflectivity in comparison with other displays. Electrophoretic particles must have dispersion stability and unique charge in dielectric medium. In this study, inorganic pigments were encapsulated using two-step polymerization of methyl methacrylate, ethylene glycol dimethylate, and methacrylic acid. Encapsulation of inorganic pigments was required to protect the pigments from environment or to prevent the particles from clustering or aggregation, thereby extending the lifetime of the electrophoretic display. Structure and properties of the encapsulated pigments were characterized by FT-IR, TGA, and optical and electron microscopy. The dispersion and the electrophoretic response of the encapsulated pigments in dielectric medium were affected by the polymerization parameters and the types of the charge control agent.
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