IMPROVED LOW-TEMPERATURE ELECTROPHORETIC MEDIA

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 quate...

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Hauptverfasser: DUNKERLEY, Erik, FEICK, Jason D, LADAVAC, Kosta, WU, Ziyan, BARYKINA-TASSA, Olga Vladimirovna, ABORN, James H, DU, Hui, LOCK, John
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung: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.