| 摘要 |
An electrophoretic display panel ( 1 ), comprising a plurality of picture elements ( 2 ), an electrophoretic medium ( 5 ) having charged particles ( 6 ), and first and second electrodes ( 3,4 ) associated with each picture element ( 2 ) for receiving a potential difference. As the display ( 1 ) is addressed, for each picture element ( 2 ), the product of voltage and duration of picture voltages is read from a controller ( 102 ). After one or more image update periods, there will be a history generated of the total energy seen by each picture element ( 2 ). DC balancing is achieved by introducing feedback loop into the controller ( 102 ) which attempts to reduce the number stored in the memory ( 104 ) to zero, for each picture element ( 2 ) by applying one or more high voltage short pulses with a polarity opposite to the number stored in the memory ( 104 ). |
