Polarity inversion driving method, driving apparatus and liquid crystal display device

A polarity inversion driving apparatus for inversion of polarity of pixels on a liquid crystal panel, comprising:

• a reference signal generation unit configure to generate a polarity inversion reference signal for reflecting selection of polarity of each row of pixels on the liquid crystal panel;
• a control signal generation unit configure to generate a control signal comprising control levels generated in m frames, where m is an integer higher than or equal to two, wherein width of the control level in each of the m frames is gradually increased in chronological order from zero to be equal to a time length of one frame, wherein the width of the control level is increased once every r frames and a time duration for scanning s rows is increased every time until the width of the control level is equal to the time length of one frame, where r is an integer higher than or equal to one and s is an integer higher than or equal to one;
• as an alternative, the width of the control level in each of the m frames is gradually decreased in chronological order from a time length of one frame to zero;
• and
• an inversion signal generation unit configure to generate a polarity inversion signal from the polarity inversion reference signal and the control signal so as to complete a polarity inversion gradually in a time period of a plurality of frames.