Encapsulated gyricon spheres
US6445490B1 · kind B1 · utility
24Cited by
12References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 28, 2000 |
| Grant date | Sep 3, 2002 |
| Priority date | — |
| Expiry date | Jan 17, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B26/026
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A particulate encapsulated Gyricon element includes a Gyricon sphere encapsulated within a shell that also contains a dielectric fluid in which the Gyricon sphere is able to rotate. The shell is preferably formed around the Gyricon sphere and the dielectric fluid by interfacial condensation polymerization. Display elements such as electric paper can be readily derived by coating the encapsulated Gyricon elements upon a substrate. Display elements can thus be readily achieved without the need for an expensive elastomer binder sheet or the need to have the sheet in contact with a dielectric fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.