The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 10, 2024
Filed:
Jul. 21, 2021
E Ink Corporation, Billerica, MA (US);
Ziyan Wu, Wayland, MA (US);
Jason D. Feick, Auburndale, MA (US);
James H. Aborn, Medford, MA (US);
John Lock, Wakefield, MA (US);
Kosta Ladavac, Somerville, MA (US);
Erik Dunkerley, Billerica, MA (US);
Hui Du, Milpitas, CA (US);
Olga Vladimirovna Barykina-Tassa, Boston, MA (US);
E Ink Corporation, Billerica, MA (US);
Abstract
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.