Electrophoretic dispersion
US9670367B2 · kind B2 · utility
26Cited by
6References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 7, 2014 |
| Grant date | Jun 6, 2017 |
| Priority date | — |
| Expiry date | Feb 5, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2001/1678
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention is directed to an electrophoretic dispersion comprising charged pigment particles dispersed in a solvent or solvent mixture, wherein at least one type of the charged pigment particles has an aggregation size about 2 to about 10 times their primary size and/or has a PDI in the range of 0.1 to 0.3. The electrophoretic dispersion of the present invention is capable of improving both image bistability and contrast ratio through adjusting the size distribution of the charged pigment particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.