Microcapsule, method of manufacturing microcapsule, electrophoretic device, and electric apparatus
AssigneeSeiko Epson Corporation
InventorsHitoshi YAMAMOTO, Takeo KAWASE, Toshiyuki MIYABAYASHI
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Abstract
A microcapsule includes an electrophoretic dispersion liquid containing at least one kind of electrophoretic particles and a capsule body, which has a first film containing the electrophoretic dispersion liquid and a second film made of organic polymer having a hydrophobic property higher than the material of the first film.
Claims18
A microcapsule comprising:
- an electrophoretic dispersion liquid including a plurality of electrophoretic particles;
- a first film overcrusting the electrophoretic dispersion liquid, a surface of the first film having a plurality of protons;
- and
- a second film overcrusting the first film, the second film being an organic polymer that includes a plurality of polar groups, the plurality of polar groups being ionically bond to the plurality of protons.
A microcapsule comprising:
- an electrophoretic dispersion liquid containing at least one kind of electrophoretic particles;
- and
- a capsule body having a first film containing the electrophoretic dispersion liquid and a second film made of organic polymer having a hydrophobic property higher than the material of the first film.
A method of manufacturing a microcapsule that includes an electrophoretic dispersion liquid, a first film, and a second film, the first film overcrusting the electrophoretic dispersion liquid, the second film overcrusting the first film, the method comprising:
- adding a plurality of polymerization surface-active agents to ionize the plurality of polymerization surface-active agents in a dispersion liquid, the dispersion liquid dispersing the first film that overcrusts the electrophoretic dispersion;
- and
- adding a polymerization, initiator to the dispersion liquid, a plurality of polymerization groups of the plurality of polymerization surface-active agents reacting to each other to form the second film which overcrusts the first film.
A method of manufacturing a microcapsule, the method comprising:
- forming a first film having electric charges on the outer surface thereof by adding a polymerization surface-active agent having a polar group having a polarity opposite to that of the electric charges on the outer surface of the first film, a hydrophobic group, and a polymerization group to an aqueous dispersion liquid in which an electrophoretic dispersion liquid containing at least one kind of electrophoretic particles is dispersed and mixing the polymerization surface-active agent with the aqueous dispersion liquid;
- adding and emulsifying the polymerization surface-active agent and/or hydrophilic monomers having a polar group having the polarity opposite to that of the electric charges on the outer surface of the first film to the aqueous dispersion liquid;
- and
- forming a second film covering the first film by adding a polymerization initiator to the aqueous dispersion liquid to cause a polymerization reaction.
A method of manufacturing a microcapsule, the method comprising:
- forming a first film having electric charges on the outer surface thereof by adding a polymerization surface-active agent having a polar group having a polarity opposite to that of the electric charges on the outer surface of the first film, a hydrophobic group, and a polymerization group to an aqueous dispersion liquid in which an electrophoretic dispersion liquid containing at least one kind of electrophoretic particles is dispersed and mixing the polymerization surface-active agent with the aqueous dispersion liquid;
- adding and emulsifying a second polymerization surface-active agent having a polar group having a polarity equal to that of the electric charges on the outer surface of the first film and/or a hydrophilic monomer having a polar group having the polarity equal to that of the electric charges on the outer surface of the first film to the aqueous dispersion liquid;
- and
- forming a second film covering the first film by adding a polymerization initiator to the aqueous dispersion liquid to cause a polymerization reaction.
Dependencies are inferred from the claim text.