Method and apparatus for driving a liquid crystal panel

A driving circuit for an LCD panel having a number of scan electrodes and a number of signal electrodes arranged to cross each other at intersecting points with liquid crystals sandwiched between them, the pixel located at each intersecting point being turned on/off in accordance with the corresponding absolute value of the difference between the voltage applied to the scan electrode and the voltage applied to the signal electrode, said driving circuit comprising:

• a scan electrode driving circuit which for each cycle applies a selection scan voltage to one of the scan electrodes and a non-selection scan voltage to all of the other scan electrodes;
• a signal electrode driving circuit which, each time one of the scan electrodes has the selection scan voltage applied to it, applies a selection signal voltage or a non-selection signal voltage to each of the signal electrodes based on the image data corresponding to the various pixels on the scan electrode;
• a line alternation forming circuit for inverting the polarity of the voltages respectively applied to the scan electrodes and signal electrodes after every prescribed number of consecutive scan electrodes;
• a selection order decision circuit which determines the order of the scan electrodes to which the selection scan voltage is to be applied in an interval shorter or longer than the alternation period corresponding to inversion of the voltage;
• a selection order control circuit for controlling the scan electrode driving circuit to ensure that the selection scan voltage is applied to the scan electrodes in the order determined by the selection order decision circuit;
• and
• a display control circuit for controlling the signal electrode driving circuit to ensure that the pixels on the scan electrode, to which the selection scan voltage is applied in an order determined by the selection order decision circuit, are turned on/off in accordance with the respective image data.