US 12,347,356 B2
Electro-optic displays, and methods for driving same
Kenneth R. Crounse, Somerville, MA (US)
Assigned to E Ink Corporation, Billerica, MA (US)
Filed by E Ink Corporation, Billerica, MA (US)
Filed on Jan. 3, 2023, as Appl. No. 18/092,726.
Application 18/092,726 is a division of application No. 17/334,751, filed on May 30, 2021, granted, now 11,568,786.
Claims priority of provisional application 63/032,721, filed on May 31, 2020.
Prior Publication US 2023/0139706 A1, May 4, 2023
Int. Cl. G09G 3/20 (2006.01); G09G 3/34 (2006.01); G09G 3/38 (2006.01)
CPC G09G 3/2007 (2013.01) [G09G 3/344 (2013.01); G09G 3/3453 (2013.01); G09G 3/348 (2013.01); G09G 3/38 (2013.01); G09G 2310/06 (2013.01); G09G 2320/0257 (2013.01); G09G 2320/029 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method for driving a color electrophoretic display including a color filter array between a viewer and an electrophoretic medium including black and white particles, the color electrophoretic display having a plurality of display pixels, the method comprising:
color mapping a source image to a color mapped image for the color electrophoretic display;
identifying color display pixels from the color mapped image and flagging the color display pixels with a designator;
using the designator as input for a waveform generating algorithm for determining whether to apply a clearing waveform when transitioning color display pixels,
wherein the clearing waveform applied to color display pixels flagged with the designator is a full clearing white-to-white transition waveform; and
applying at least one top-off pulse to display pixels having all four cardinal neighbors with a next graytone of white and at least one cardinal neighbor that is a color display pixel flagged with the designator.