Particles for electrophoretic displays
AssigneeMerck Patent GmbH
InventorsLouise Diane Farrand, Mark James, Matthias Koch, Ashley Nathan Smith, Jonathan Henry Wilson, Mark John Goulding, Daniel Walker
Life of this patent
Estimating the term…
Abstract
This invention relates to colored polymer particles preferably with surface functionality for charge retention, a process for their preparation, the use of these particles for the preparation of an electrophoretic device, color electrophoretic displays comprising such particle, and new water-soluble dyes.
Claims15
An electrophoretic fluid comprising colored polymer particles, which comprise monomer units of at least one polymerizable dye, at least one monomer, optionally at least one charged co-monomer, and optionally at least one crosslinking co-monomer,
- wherein the polymerizable dye is a dye of Formula 2 or a dye of formula 3
- wherein
- R5, R7=alkyl,
- R6, R8=H or CH3, and
- Hal=halogen.
Dependencies are inferred from the claim text.