Patent ID: 8624832

Claim:
A drive method for an electrophoretic display device that has an electrophoretic device composed of a suspension fluid containing electrophoretic particles disposed between a common electrode and a plurality of pixel electrodes, driving the electrophoretic device by applying voltage between the common electrode and the plural pixel electrodes; and redrawing the display to change the displayed image, the redrawing including applying a first pulse train that repeats first potential and a second potential, to the common electrode until a reflectance of the displayed image reaches a threshold value set to at least 80% and less than 100% of a targeted maximum reflectance, applying one of the first potential, and the second potential to a first pixel electrode while applying the first pulse train according to the updated display content, applying a second pulse train that repeats the first potential and the second potential, after the threshold value is reached, to the common electrode, each pulse of the second pulse train having a longer width than that of each pulse of the first pulse train, and applying the one of the first potential and the second potential to the first pixel electrode while applying the first pulse train; wherein the electrophoretic display device has no holding electrode.