Electrophoretic medium with improved stability
US7236290B1 · kind B1 · utility
194Cited by
123References
23Claims
0Family size
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Key dates
| Filing date | Jul 25, 2000 |
| Grant date | Jun 26, 2007 |
| Priority date | — |
| Expiry date | Jun 26, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2001/1678
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An electrophoretic medium comprises a liquid and at least one particle disposed within the liquid and capable of moving therethrough on application of an electric field to the medium. The medium further comprises a free radical scavenger selected from the group consisting of (a) stable free radicals; and (b) polymeric free radical scavengers comprising a plurality of free radical scavenging groups attached to a polymeric chain. The medium is desirably encapsulated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.