Jillian M Smith

US Patent:

20200272017, Aug 27, 2020

Filed:

Jan 29, 2020

Appl. No.:

16/776042

Inventors:

- Billerica MA, US
Peter Carsten Bailey WIDGER - Nashua NH, US
Jillian SMITH - Dorchester MA, US
Jay William ANSETH - Canton MA, US
Craig A. HERB - Medford MA, US
George G. HARRIS - Woburn MA, US
Mark Benjamin ROMANOWSKY - Cambridge MA, US

International Classification:

G02F 1/167
G02F 1/1676
G02F 1/16757
C08L 33/12
C08K 3/04
G02F 1/1681

Abstract:

An electro-optic media includes either a plurality of microcapsules in a binder, a polymeric sheet containing sealed microcells, or droplets in a continuous polymeric phase. Each of the microcapsules, microcells, or droplets contain a dispersion that includes a plurality of charged composite particles and a suspending fluid, and the charged particles move through the suspending fluid under the influence of an electric field. The composite particles include one or more types of pigment particles that are at least partially coated with a polymeric material. Each of the binder, polymeric sheet, continuous polymeric phase, the charged composite particles, and the suspending fluid have an index of refraction, and a difference between the index of refraction of the composite particles and at least one of the binder, polymeric sheet, continuous polymeric phase, and solvent is less than or equal to 0.05 at 550 nm.