Microencapsulation processes and compositions for electrophoretic displays
US7286279B2 · kind B2 · utility
41Cited by
10References
62Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 30, 2003 |
| Grant date | Oct 23, 2007 |
| Priority date | — |
| Expiry date | Aug 27, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/09766
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention is directed to a method for improving the performance of an electrophoretic display, which method comprises adding a fluorinated quaternary nitrogen salt in either the internal phase or the continuous phase in a microencapsulation process for the formation of pigment-containing microparticles. One or more of the following materials may be further added to the internal phase or continuous phase in the microencapsulation process: a fluorinated protective colloid, a second charge controlling agent or a second monomer or oligomer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.