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US 10,308,744 B2Granted
Particles for electrophoretic displays
AssigneesMerck Patent GmbH, The Queen's University of Belfast
InventorsLouise D. Farrand, Nils Greinert, Jonathan H. Wilson, Thomas Bauer, Claire Topping, Sarah Norman
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Abstract
This invention relates to polymer particles, a process for their preparation, electrophoretic fluids comprising such particles, and electrophoretic display devices comprising such fluids.
Claims22
Polymer particles for use in electrophoretic devices comprising monomer units of
- a) at least one ethylenically unsaturated monomer;
- b) at least one polymerisable ionic liquid (PIL) selected from A to S listed below:
- PIL
- Cation
- Anion
- A
- B
- C
- D
- E
- F
- G
- H
- I
- J
- K
- L
- M
- N
- O
- P
- Q
- R
- S
- c) optionally at least one polymerisable dye, and
- d) optionally at least one polymerisable steric stabilizer and
- wherein the particles are spherical and have a diameter particle size in the range of 50-1200 nm.
24 more elements
Dependencies are inferred from the claim text.