Electrophoretic particle, process for its production, and its use
US7352502B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jun 2, 2005 |
| Grant date | Apr 1, 2008 |
| Priority date | — |
| Expiry date | Jul 26, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2991
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electrophoretic particle including: a pigment particle having an average particle diameter of 1 μm or smaller; and a polymer layer having an average thickness of 1 to 500 nm formed on a surface of the pigment particle, wherein 50% or higher of an entire surface of the pigment particle is coated with the polymer layer. The electrophoretic particle can be produced by radical polymerization using a polymerization initiator in a state where a pigment particle and monomer components are present in a solvent. The electrophoretic particle can be used in a microcapsule and a sheet for electrophoretic display, as well as an electrophoretic display device and an electronic equipment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.