Patent ID: 8531443
Filing Date: 2013-09-10
Classification: G09G

Abstract:
1. A display driving circuit for driving a display panel, the display panel comprising: a plurality of rows each including: data signal lines each connected to a second terminal of a corresponding one of the switching elements on said each of the plurality of rows, the display driving circuit driving the display panel to carry out a gradation display corresponding to a potential of each of the pixel electrodes, the display driving circuit comprising: a scanning signal line driving circuit which outputs a scanning signal for turning on the switching elements on said each of the plurality of rows during a corresponding one of horizontal scanning periods which are sequentially allocated to the respective plurality of rows; a data signal line driving circuit which outputs a data signal having a polarity that is, (i) to carry out line inversion driving, reversed in sync with a vertical scanning period, identical for all pixels on each of the plurality of rows, and reversed between any adjacent two of the plurality of rows, and (ii) to carry out frame inversion driving, reversed in sync with the vertical scanning period and identical for all pixels for an identical frame; a capacity coupling line driving circuit which, after the horizontal scanning period for said each of the plurality of rows, outputs a potential shift signal having a potential that is switched between two values in a direction determined in accordance with the polarity of the data signal which polarity corresponds to the horizontal scanning period; and a determining circuit which determines whether the data signal line driving circuit is carrying out the line inversion driving or the frame inversion driving, the capacity coupling line driving circuit outputting the potential shift signal so that only when the determining circuit has determined that the data signal line driving circuit is carrying out the line inversion driving, the potential of the potential shift signal at timing at which the switching elements on said each of the plurality of rows are turned off is different between (i) said each of the plurality of rows and (ii) a row adjacent to said each of the plurality of rows, during a first vertical scanning period in which the data signal corresponding to a video image to be displayed starts to be outputted, wherein: the capacity coupling line driving circuit outputs the potential shift signal so that during the line inversion driving, the potential of the potential shift signal on said each of the plurality of rows is different between (i) timing at which the switching elements on said each of the plurality of rows are turned off and (ii) timing at which the switching elements on a row subsequent to said each of the plurality of rows are turned on; the capacity coupling line driving circuit includes: the capacity coupling line driving circuit during the line inversion driving outputs (i) a first potential shift signal having a first potential, the first potential shift signal having a polarity identical to a first polarity of the polarity signal being inputted to the second input section when the scanning signal on said each of the plurality of rows is inputted to the first input section, and (ii) a second potential shift signal having a second potential, the second potential shift signal having a polarity identical to a second polarity of the polarity signal being inputted to the second input section when the scanning signal on the row subsequent to said each of the plurality of rows is inputted to the first input section.