US 12,259,629 B2
Layered structure with high dielectric constant for use with active matrix backplanes
Cristina Visani, Cambridge, MA (US); Stephen J. Telfer, Arlington, MA (US); Kosta Ladavac, Somerville, MA (US); Kenneth R. Crounse, Somerville, MA (US); Timothy J. O'Malley, Westford, MA (US); and Teck Ping Sim, Acton, MA (US)
Assigned to E Ink Corporation, Billerica, MA (US)
Filed by E INK CORPORATION, Billerica, MA (US)
Filed on Apr. 27, 2023, as Appl. No. 18/140,057.
Application 18/140,057 is a continuation of application No. 16/862,750, filed on Apr. 30, 2020, granted, now 11,675,244.
Claims priority of provisional application 62/843,082, filed on May 3, 2019.
Prior Publication US 2023/0288772 A1, Sep. 14, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G02F 1/16756 (2019.01); G02F 1/1368 (2006.01); G02F 1/167 (2019.01); G02F 1/1675 (2019.01); G02F 1/1676 (2019.01)
CPC G02F 1/16756 (2019.01) [G02F 1/1368 (2013.01); G02F 1/167 (2013.01); G02F 1/1676 (2019.01); G02F 2001/1678 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An electrophoretic display, comprising:
an electrophoretic medium comprising a non-polar fluid and two sets of charged pigment particles dispersed in the non-polar fluid and movable through the non-polar fluid under influence of an electric field, said two sets of charged pigment particles having different optical characteristics from each other;
a light-transmissive electrode on one side of the electrophoretic medium;
a rear electrode on an opposite side of the electrophoretic medium; and
a dielectric layer having a dielectric constant greater than 5 between the electrophoretic medium and the light-transmissive electrode or between the electrophoretic medium and the rear electrode configured to reduce electrode electrochemical degradation and buildup of remnant voltages in the display.