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US 9,541,812 B2Granted
Electrophoretic particles, production methods of electrophoretic particles, and electrophoretic display devices
AssigneeKolon Industries, Inc.
InventorsHyeon-Jung Yoo, Young-Seo Yoon, Hey-Jin Myoung
Life of this patent
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Abstract
The present invention relates to an electrophoretic particle that includes: a core part including an inorganic particle; a shell layer formed on the core part; and a protective layer formed on the shell layer, a method of producing the electrophoretic particle, and an electrophoretic display device including the electrophoretic particle.
Claims16
An electrophoretic particle, which comprises:
- a core part including an inorganic particle;
- a shell layer being formed on the core part and comprising a first polymeric compound containing an acrylate or vinyl repeating unit and a multifunctional acrylate repeating unit;
- and
- a protective layer being formed on the shell layer and comprising a second polymeric compound containing an acrylate or vinyl repeating unit and a multifunctional aromatic vinyl repeating unit.
1 more element
A method of producing an electrophoretic particle, which comprises the steps of:
- adding a first monomer mixture including an acrylate or vinyl monomer, a polymerization initiator, and a compound with at least two acrylate or methacrylate groups to a solvent having inorganic particles dispersed therein and subjecting a resultant mixture to a polymerization reaction at a temperature of 10 to 120° C. for 1 to 50 hours to form a core-shell structured particle;
- and
- adding a second monomer mixture including an acrylate or vinyl monomer, a polymerization initiator, and an aromatic compound with at least two vinyl groups to a solvent having the core-shell structured particles dispersed therein and subjecting a resultant mixture to a polymerization reaction at a temperature of 10 to 120° C. for 1 to 50 hours to form a protective layer on the shell.
Dependencies are inferred from the claim text.