Electrophoretic medium comprising a mixture of charge control agents
US10040954B2 · kind B2 · utility
2Cited by
144References
18Claims
0Family size
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Key dates
| Filing date | Sep 18, 2017 |
| Grant date | Aug 7, 2018 |
| Priority date | — |
| Expiry date | Sep 18, 2037 |
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 polyesters. 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.