US 11,657,774 B2
Apparatus and methods for driving displays
Karl Raymond Amundson, Cambridge, 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 Sep. 19, 2022, as Appl. No. 17/948,224.
Application 17/011,566 is a division of application No. 15/266,554, filed on Sep. 15, 2016, granted, now 10,803,813, issued on Oct. 13, 2020.
Application 17/948,224 is a continuation in part of application No. 17/011,566, filed on Sep. 3, 2020, granted, now 11,450,286, issued on Sep. 20, 2022.
Claims priority of provisional application 62/370,703, filed on Aug. 3, 2016.
Claims priority of provisional application 62/261,104, filed on Nov. 30, 2015.
Claims priority of provisional application 62/219,606, filed on Sep. 16, 2015.
Prior Publication US 2023/0009743 A1, Jan. 12, 2023
Int. Cl. G09G 3/34 (2006.01)
CPC G09G 3/344 (2013.01) [G09G 2300/04 (2013.01); G09G 2300/08 (2013.01); G09G 2310/0251 (2013.01); G09G 2310/08 (2013.01); G09G 2320/0204 (2013.01); G09G 2320/0257 (2013.01)] 24 Claims
OG exemplary drawing
 
1. An electro-optic display comprising:
an electrophoretic display medium electrically coupled between a common electrode and a display pixel electrode associated with a display pixel;
a display controller circuit in electrical communication with the common electrode and an n-type transistor associated with the display pixel electrode, the display controller circuit capable of applying waveforms comprising one or more frames to the display pixel by applying one or more voltages to the common electrode and to the display pixel electrode via the n-type transistor, wherein the one or more voltages are sufficient to change an optical state of the electrophoretic display medium in proximity to the display pixel, the display controller circuit configured to:
detect the display pixel is in an idle state;
apply a null transition waveform to the display pixel, the null transition waveform consisting of a single frame; and
invoke automatically, in response to the null transition waveform, a first post-drive waveform sequence.