Electrophoretic fluid
View Patent ↗A red particle for an electrophoretic display. The particle includes a core of a diketopyrrolopyrrole pigment, a shell around the core comprising a methacrylate, and steric siloxane molecules extending from the shell.
1. A particle comprising:
a core comprising a diketopyrrolopyrrole pigment;
a shell substantially surrounding the core and comprising a methacrylate polymer; and steric polymers comprising a polysiloxane coupled to or absorbed by the shell, wherein the combined weight of the methacrylate and the polysiloxane is between 30% and 70% of the total weight of the particle, and
wherein the diketopyrrolopyrrole pigment is 3,6-Bis(4-chlorophenyl)pyrrolo[3,4-c]pyrrole-1,4(2H,5H)-dione.
2. The particle of claim 1 , wherein the methacrylate poly comprises methyl methacrylate.
3. The particle of claim 1 , wherein the polysiloxane comprises dimethylsiloxane.
4. The particle of claim 1 , wherein the combined weight of the methacrylate and the polysiloxane is between 40% and 60% of the total weight of the particle.
5. A display fluid comprising a particle of claim 1 .