Photo-thermally induced polymerization inhibitors for electrophoretic media
US10585325B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2018 |
| Grant date | Mar 10, 2020 |
| Priority date | — |
| Expiry date | Jun 2, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2001/1678
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An electrophoretic medium that may be incorporated into an electrophoretic display includes a dispersion that may be contained in a plurality of microcapsules or microcells or a polymeric continuous phase. The dispersion may include a non-polar fluid, a plurality of first charged particles; and an inhibitor of photo-thermally induced polymerization that inhibits potential cross-linking between the particles and/or the microcells or polymeric continuous phase. The inhibitor may be a compound having an unsaturated hydrocarbon ring and at least one of a hydroxyl group, a carbonyl group, and a nitroso group. The plurality of microcells or polymeric continuous phase and a coating of the particles may include a polymeric material that includes (meth)acrylates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.