Electrophoresis dispersion liquid, electrophoresis sheet, electrophoresis device, and electronic apparatus
AssigneeSeiko Epson Corporation
InventorsShinobu Yokokawa, Keiichi Inoue, Tomoyuki Ushiyama, Masahiko Nakazawa, Kiyoshi Nakamura
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Abstract
An electrophoresis dispersion liquid includes first electrophoretic particle of a scattering system having an ionic group on a surface thereof; second electrophoretic particle of a coloring system having a polarization group on the surface thereof; and a dispersion medium. It is preferable that the ionic group is an acidic group, and further includes a ring structure that forms an acidic group and a salt. It is preferable that the polarization group is an organic group having a main skeleton, and a substituent bonded to the main skeleton.
Claims19
An electrophoresis dispersion liquid, comprising:
- first electrophoretic particle of a scattering system having an ionic group on a surface thereof;
- second electrophoretic particle of a coloring system having a polarization group on the surface thereof;
- and
- a dispersion medium,
- wherein
- the ionic group is an acidic group, and further includes a ring structure that forms an acidic group and a salt,
- the first electrophoretic particle includes a scattering system particle having a first functional group on the surface thereof and a first block copolymer bonded to the scattering system particle, and
- the first block copolymer is formed by a first monomer having a site that contributes to dispersibility in the dispersion medium, a second monomer having the second functional group which has reactivity to the first functional group, and a third monomer having an acidic group and a ring structure being polymerized without the first monomer and the second monomer being copolymerized, and is connected to the scattering system particle by reacting the first functional group and the second functional group at the unit derived from the second monomer.
An electrophoresis dispersion liquid, comprising:
- first electrophoretic particle of a scattering system having an ionic group on a surface thereof;
- second electrophoretic particle of a coloring system having a polarization group on the surface thereof;
- and
- a dispersion medium,
- wherein
- the polarization group is an organic group having a main skeleton, and a substituent bonded to the main skeleton,
- the second electrophoretic particles include a coloring system particle having a first functional group on the surface thereof, and a second block copolymer bonded to the coloring system particle, and
- the second block copolymer is formed by a first monomer having a site that contributes to dispersibility in the dispersion medium, a second monomer having the second functional group which has reactivity to the first functional group, and a fourth monomer having an organic group being polymerized without the first monomer and the second monomer being copolymerized, and is connected to the coloring system particle by reacting the first functional group and the second functional group at the unit derived from the second monomer.
Dependencies are inferred from the claim text.