Electrophoretic medium comprising a mixture of charge control agents
US10233339B2 · kind B2 · utility
4Cited by
146References
19Claims
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Key dates
| Filing date | Aug 6, 2018 |
| Grant date | Mar 19, 2019 |
| Priority date | — |
| Expiry date | Aug 6, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2001/1678
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An electrophoretic medium including a mixture of charge control agents, for example quaternary amine salts of polyisobutylene combined with quaternary amine salts of unsaturated monomers. The described electrophoretic medium exhibits improved color saturation as compared to similar electrophoretic media having only one of the charge control agents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.