E Ink Corporation

Erik Dunkerley

Hui Du

Kosta Ladavac

Ziyan Wu

Jason D Feick

Olga Vladimirovna Barykina-Tassa

John Lock

James H Aborn

Improved formulations of electrophoretic media that can be incorporated into displays, front plane laminates, inverted front plane laminates, or color changing films. The formulations include a non-polar fluid, a plurality of first charged particles, and charge control agents (CCA) including a quaternary amine and an unsaturated polymeric tail comprising monomers of at least 10 carbon atoms in length. The formulations show improved switching speeds, as well as a larger dynamic range at low temperatures (i.e., below about 0° C.), where compared to state-of-the-art electrophoretic media.

Electrophoretic media including charge control agents comprising quartenary amines and unsaturated polymeric tails

Improved formulations of electrophoretic media that can be incorporated into displays, front plane laminates, inverted front plane laminates, or color changing films. The formulations include a non-polar fluid, a plurality of first charged particles, and charge control agents (CCA) including a quaternary amine and an unsaturated polymeric tail comprising monomers of at least 10 carbon atoms in length. The formulations show improved switching speeds, as well as a larger dynamic range at low temperatures (i.e., below about 0&#xb0; C.), where compared to state-of-the-art electrophoretic media.

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Billerica, MA, United States of America

Erik Dunkerley