Electronic paper display apparatus, driving method thereof and computer-readable storage medium

An electronic paper display apparatus, comprising a controller, a base substrate, a plurality of pixel driving circuits on the base substrate, and an electronic paper film,

• wherein the electronic paper film comprises a plurality of microstructures;
• each of the plurality of microstructures comprises black particles, white particles, and color particles;
• wherein charges of the black particles have a polarity opposite to a polarity of charges of the white particles and the same as a polarity of charges of the color particles, and a charge-to-mass ratio of the black particles is greater than a charge-to-mass ratio of the color particles;
• the controller is configured to generate a control signal and a driving signal, according to an image displayed by the color electronic paper at a display stage;
• the control signal is configured to control a pixel driving circuit to be turned on, the driving signal is configured to drive the black particles, the white particles and the color particles in the microstructure, wherein the controller is configured to, according to an image to be displayed, input a first driving signal to the pixel electrode of the pixel driving circuit corresponding to a pixel which is required to display black, input a second driving signal to the pixel electrode of the pixel driving circuit corresponding to a pixel which is required display white, and input a third driving signal to the pixel electrode of the pixel driving circuit corresponding to a pixel which is required to display a color, according to the image to be displayed;
• wherein a driving stage of the electronic paper display apparatus comprises a first homogenization stage, and the first homogenization stage comprises a plurality of homogenization sub-stages;
• at a last one of the plurality of homogenization sub-stages, the first driving signal comprises a first driving sub-signal, the second driving signal comprises a second driving sub-signal, and the third driving signal comprises a third driving sub-signal;
• a voltage of the first driving sub-signal has a polarity opposite to the polarity of the black particles;
• a voltage of the second driving sub-signal has a polarity opposite to the polarity of the white particles;
• and a voltage of the third driving sub-signal has a polarity opposite to the polarity of the color particles;
• wherein starting moments of driving of the plurality of homogenization sub-stages of the first homogenization stage sequentially increases, and the plurality of homogenization sub-stages are a first homogenization sub-stage, a second homogenization sub-stage, a third homogenization sub-stage and a fourth homogenization sub-stage;
• the first driving signal further comprises a nineteenth driving sub-signal at the first homogenization sub-stage and the second homogenization sub-stage;
• the second driving signal further comprises a twenty-first driving sub-signal at the first homogenization sub-stage and the second homogenization sub-stage;
• and the third driving signal further comprises a twenty-third driving sub-signal at the first homogenization sub-stage and the second homogenization sub-stage;
• and the nineteenth driving sub-signal, the twenty-first driving sub-signal and the twenty-third driving sub-signal each comprise pulse signals with positive and negative voltages sequentially altered;
• and
• the pixel driving circuit comprises a common electrode and a pixel electrode among the plurality of microstructures, and is configured to be written the driving signal into the pixel electrode under the control of the control signal.