Patent ID: 8089452

Claim:
An electrophoresis device which includes: a first substrate having a plurality of pixel electrodes formed on a surface thereof, a second substrate having a common electrode formed on a surface thereof and disposed to face the pixel electrodes, and an electrophoretic layer disposed between the pixel electrodes and the common electrode, and which makes electrophoretic particles migrate by keeping the potential of each pixel electrode constant and changing a voltage to be applied to the common electrode, the device comprising: a voltage control means which supplies first and second voltages V 1 and V 2 to the pixel electrodes, and in response to the first and second voltages V 1 and V 2 shifting to third and fourth voltages V 3 and V 4 , respectively, supplies a voltage pulse that varies between fifth and sixth voltages V 5 and V 6 to the common electrode, wherein V 1 <V 3 <V 5 and V 6 <V 4 <V 2 .