Colored electrophoretic displays
US11460722B2 · kind B2 · utility
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135References
23Claims
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Key dates
| Filing date | May 6, 2020 |
| Grant date | Oct 4, 2022 |
| Priority date | — |
| Expiry date | May 11, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2001/1678
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electrophoretic medium includes a fluid, a plurality of light scattering charged particles having a first polarity, and a first, second, and third set of particles, each set having a color different from each other set. The first and second particles may have a second polarity opposite to the first polarity, and the mobility of the third set of particles is less than half of the mobility of the light scattering particles, the first set of charged particles, and the second set of charged particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.