Working fluids for electrophoretic image display devices
US4093534A · kind A · utility
252Cited by
12References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 5, 1975 |
| Grant date | Jun 6, 1978 |
| Priority date | — |
| Expiry date | Feb 5, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G17/04
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention provides a working fluid for an electrophoretic image display device including a dispersion of a species of finely divided particles of an opaque dielectric material suspended in a suspension medium, each of the said particles which are transportable within the suspension medium under the influence of an electric field, has a chemical compound adsorbed on the surface thereof, the chemical compound is such that the molecules thereof exert an attractive force towards each other in the absence of the electric field.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.