Electrophoretic displays using nanoparticles
US6323989A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 5, 2000 |
| Grant date | Nov 27, 2001 |
| Priority date | — |
| Expiry date | May 5, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K85/60
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electrophoretic display comprises a fluid and a plurality of nanoparticles having diameters substantially less the wavelengths of visible light such that, when the nanoparticles are in a dispersed state and uniformly dispersed throughout the fluid, the fluid presents a first optical characteristic, but when the nanoparticles are in an aggregated state in which they are gathered into aggregates substantially larger than the individual nanoparticles, the fluid presents a second optical characteristic different from the first optical characteristic. The electrophoretic display further comprises at least one electrode arranged to apply an electric field to the nanoparticle-containing fluid and thereby move the nanoparticles between their dispersed and aggregated states.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.