Fluorinated silicon phthalocyanines and naphthalocyanines for electrophoretic display
US7532389B2 · kind B2 · utility
27Cited by
15References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 2, 2008 |
| Grant date | May 12, 2009 |
| Priority date | — |
| Expiry date | Sep 2, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133377
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
This invention relates to stable colorants of high extinction coefficient and high solubility or dispersibility for an electrophoretic, magnetophoretic or electromagnetophoretic display. More particularly, it relates to stable colorants for a microcup-based electrophoretic or electromagnetophoretic display the cells of which are filled with charged and/or magnetic particles dispersed in a halogenated, preferably a fluorinated, solvent. The use of the stable colorants allows the display to be of superior contrast ratio and longevity, and suitable for high-quality imagery applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.