Patent ID: 8294663

Claim:
A method of driving an electrophoresis display device having a displaying portion which includes an electrophoresis element containing electrophoresis particles and disposed between a first electrode and a second electrode opposing to one another and which consists of a plurality of pixels, comprising: after performing an image writing step in which an image is written into the displaying portion by applying a first potential or a second potential to the first electrode separately provided for the pixel and applying a reference pulse in which the first potential and the second potential repeatedly alternate at a predetermined interval to the second electrode which is a common electrode shared by all the pixels, performing at least one contrast maintaining step including a short term interval step in which the second electrode and all the first electrodes fall in a high impedance state for five or less seconds and an auxiliary pulse inputting step in which at least one cycle of the reference pulse is applied to the second electrode and a potential which is equivalent to the potential applied during the image writing step is applied to the first electrode while the reference pulse is applied.