Electrophoretic dispersion including charged pigment particles, uncharged additive nanoparticles, and uncharged neutral density particles
US10288975B2 · kind B2 · utility
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15References
11Claims
0Family size
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Key dates
| Filing date | Nov 6, 2017 |
| Grant date | May 14, 2019 |
| Priority date | — |
| Expiry date | Nov 6, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2001/1678
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention is directed to an electrophoretic dispersion comprising charged pigment particles, in particular, an electrophoretic dispersion including both uncharged or lightly charged neutral buoyancy particles and uncharged or lightly charged additive particles. The combination improves the performance of an electrophoretic display, in particular the color state stability over time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.