Patent ID: 8300006

Claim:
An electrophoretic display unit ( 1 ) comprising an electrophoretic display panel ( 50 ) comprising a plurality of pixels ( 11 ) each coupled to a pixel electrode ( 5 ), the plurality of pixels being arranged in a plurality of rows and columns; data driving circuitry ( 30 ) for supplying a data pulse (D 1 , D 2 , D 3 , D 4 , D 5 , D 6 ) to each of the pixel electrodes ( 5 ) via a switching element associated with each pixel electrode; a common electrode ( 6 ) coupled to the plurality of pixels ( 11 ) for receiving an alternating voltage signal (V 6 ); and a controller ( 20 ) for controlling the data driving circuitry ( 30 ) for supplying a setting signal (S 1 , S 2 ) to each of the pixel electrodes ( 5 ) for reducing a voltage across the associated pixel ( 11 ) before a transition of the alternating voltage signal (V 6 ), wherein the data pulse (D 1 , D 2 , D 3 , D 4 , D 5 , D 6 ) is supplied during a driving frame period (F d ) during which each row of pixels ( 11 ) is selected in turn; and the setting signal (S 1 , S 2 ) is supplied during a setting frame period (F s ), the alternating voltage signal (V 6 ) being reversed in polarity after each setting frame period (F s ).