Electrophoretic display and drive method thereof

An electrophoretic display, comprising:

• a common electrode layer;
• an electrophoretic layer;
• a plurality of pixel electrodes each of which corresponds to a pixel;
• a thin film transistor;
• a processing unit;
• and
• a driving control circuit,
• wherein the processing unit is used for defining two gray level changing directions, and defining gradually changing gray levels and quickly changing gray levels in relation to a gray level changing direction;
• wherein the processing unit is also used for controlling the driving control circuit to conduct the TFT connected to the pixel electrode corresponding to the pixel whose gray level value needs to be changed
• wherein the processing unit is also used for controlling the driving control circuit to apply the driving scheme based on the initial gray level and the final gray level of the pixel, whose gray level value needs to be changed, to the pixel electrode via the conducted TFT, to control that pixel,
• wherein applying the driving scheme to the pixel electrode to control the pixel whose gray level value needs to be changed comprises the at least one gray level driving procedure, each driving procedure changing a gray level in the grey level changing direction, the grey level being a gradually changing gray level or a quickly changing gray level, the final gray level being attained by a gradually changing gray level in the gray level changing direction which the last driving procedure corresponds to;
• wherein the driving control circuit is used for connecting the TFT, receiving a control signal transmitted by the processing unit, and refreshing the TFT to display screen;
• and
• wherein the processing unit is configured for;
• driving the pixel, whose gray level value needs to be changed, so as to make its gray level change from the initial gray level to an extreme gray level so as to maintain DC balance;
• determining a gray level changing direction based on the extreme gray level and the final gray level of the pixel whose gray level value needs to be changed;
• determining whether the final gray level is a gradually changing gray level in the gray level changing direction;
• if yes, driving the pixel, whose gray level value needs to be changed, so as to make its gray level change from the extreme gray level to the final gray level;
• and
• if not, driving the pixel, whose gray level value needs to be changed, so as to make its gray level change from the extreme gray level to the other extreme gray level, and then driving the pixel from the other extreme gray level to the final gray level.