Electrophoretic display device
US6650463B2 · kind B2 · utility
57Cited by
3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2002 |
| Grant date | Nov 18, 2003 |
| Priority date | — |
| Expiry date | Mar 12, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/167
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A dispersion medium, for dispersing electrophoretic particles in an electrophoretic display device, contains an organic compound having two or more rings in its structural formula, where the organic compound comprises at least about 30% by weight of the dispersion medium. The thus constituted dispersion medium improves the reliability and response of the electrophoretic device. The organic compound comprises one or more of the materials defined by the structural formulae (1) to (4), wherein each of A1 to A6, C1, and C2 are ring compounds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.