US 12,243,498 B2
Colored electrophoretic displays using same polarity reversing address pulse
Stephen J. Telfer, Arlington, MA (US); Stephen Bull, Windham, NH (US); Alain Bouchard, Boston, MA (US); Craig A. Herb, Medford, MA (US); Kosta Ladavac, Somerville, MA (US); Ana L. Lattes, Newton, MA (US); Jennifer M. Morrison, Watertown, MA (US); Richard J. Paolini, Jr., Framingham, MA (US); Michael Thomas Regan, Troutman, NC (US); Luke M. Slominski, Sharon, MA (US); Lee Yezek, Watertown, MA (US); Kenneth R. Crounse, Somerville, MA (US); J. Ryan Kruse, Wayland, MA (US); Christopher L. Hoogeboom, Burlington, MA (US); Jason D. Feick, Auburndale, MA (US); and David D. Miller, Wakefield, MA (US)
Assigned to E Ink Corporation, Billerica, MA (US)
Filed by E Ink Corporation, Billerica, MA (US)
Filed on Mar. 25, 2021, as Appl. No. 17/212,558.
Application 17/212,558 is a continuation of application No. 16/585,453, filed on Sep. 27, 2019, granted, now 11,195,481.
Application 16/585,453 is a continuation of application No. 16/263,532, filed on Jan. 31, 2019, granted, now 10,475,399, issued on Nov. 12, 2019.
Application 16/263,532 is a continuation of application No. 15/606,058, filed on May 26, 2017, granted, now 10,242,630, issued on Mar. 26, 2019.
Application 15/606,058 is a continuation of application No. 14/277,107, filed on May 14, 2014, granted, now 9,697,778, issued on Jul. 4, 2017.
Claims priority of provisional application 61/823,031, filed on May 14, 2013.
Prior Publication US 2021/0210026 A1, Jul. 8, 2021
Int. Cl. G02F 1/167 (2019.01); G02F 1/1685 (2019.01); G09G 3/34 (2006.01); G02F 1/1675 (2019.01)
CPC G09G 3/344 (2013.01) [G02F 1/167 (2013.01); G02F 1/1685 (2019.01); G02F 2001/1678 (2013.01); G09G 2310/06 (2013.01); G09G 2310/068 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An electrophoretic medium comprising a fluid and first and second types of particles disposed in the fluid;
wherein the first type of particles bear charge of opposite polarity from that of the second type of particles; and
wherein the second type of particles bear a polymeric surface treatment, and wherein the second type of particles is formed from the reaction of pigment particles with a vinylbenzyl chloride to form a vinyl-functionalized pigment particles, followed by the polymerization reaction of an alkyl acrylate or an alkyl methacrylate in the presence of the vinyl-functionalized pigment particles.