Patent ID: 11935495
Assignee: E INK CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 7:
8. A method for driving a black-and-white electro-optic display to an optical rail state, the electro-optic display comprising an electrophoretic display medium electrically coupled between a plurality of display pixel electrodes and a common electrode, wherein each of the plurality of display pixel electrodes is associated with a display pixel, and wherein the electrophoretic display medium comprises a plurality of electrically charged black pigment particles and electrically charged white pigment particles, the method comprising the following steps in order:
connecting a first display transistor associated with a first display pixel of the plurality of display pixels to a first voltage driver circuit by setting a first switching device in electrical communication with the first voltage driver circuit and a display pixel electrode associated with the first display pixel to a closed state, wherein the first voltage driver circuit is configured to provide a first voltage sufficient to drive the display pixel to an optical rail state, and wherein the first voltage is provided during one or more frames of a driving waveform;
connecting the first display transistor associated with the first display pixel of the plurality of display pixels to a second voltage driver circuit configured to provide second voltage having a non-zero amplitude less than the first voltage for reducing an amount of remnant voltage the driving waveform contributes to the first display pixel, wherein the second voltage is provided after the one or more frames of the driving waveform; and
placing the first display pixel in a floating state.