Patent ID: 8686988

Claim:
A method for driving an electrochemical display element, which uses an electrochemical display element, including: a plurality of pixel electrodes each provided on each of a plurality of pixels arranged in two-dimensional matrix; a common electrode commonly provided on the pixels; and an electrolytic solution layer sandwiched between respective pixel electrodes and the common electrode and containing metal ion, the method comprising: applying a deposition voltage across the pixel electrodes and the common electrode so as to deposit the metal ion and display an image, wherein the deposition voltage includes a plurality of rectangular waves having different voltages for a plurality of levels of deposition; wherein when a voltage of a rectangular wave, from among the plurality of rectangular waves, having the highest voltage is continuously applied, a resistance value of the pixel reaches an inflexion point of resistance at which point the resistance of the pixel starts to rapidly increase, and then the pixel breaks down; and setting a time period for applying the rectangular wave having the highest voltage to a value equal to or less than a time period to get to the inflexion point when the voltage of the rectangular wave having the highest voltage is continuously applied.