Patent ID: 8941634
Filing Date: 2015-01-27
Classification: G09G,H04N

Abstract:
1. A driver device for driving a display panel, the display panel including (i) a plurality of scan lines, (ii) a plurality of video signal lines provided so as to intersect the plurality of scan lines, (iii) pixel regions defined by the plurality of scan lines and the plurality of video signal lines, (iv) pixel electrodes provided in the respective pixel regions and (v) TFTs each electrically connecting or disconnecting, in response to a scan signal supplied to a corresponding one of the plurality of scan lines, a corresponding one of the pixel electrodes with or from a corresponding one of the plurality of video signal lines, respectively, said driver device, comprising: a scan line driving circuit for sequentially supplying scan signals to the plurality of scan lines; a video signal line driving circuit for sequentially supplying video signals to the plurality of video signal lines; and a timing control circuit for controlling (i) a timing at which the scan line driving circuit supplies a scan signal and (ii) a timing at which the video signal line driving circuit supplies video signals, the scan line driving circuit carrying out a first scan in which (i) the scan line driving circuit starts to supply a first scan signal, which has an intermediate electric potential between a voltage of a low level in a time period during which an (n+m) the scan line driving circuit carrying out a second scan in which the scan line driving circuit supplies a second scan signal, which has the voltage of the high level, to the (n+m) the scan line driving circuit carrying out, before a primary scan that includes the first scan and the second scan, a preliminary scan in which a preliminary scan signal is supplied to each of the plurality of scan lines, the preliminary scan including a first preliminary scan and a second preliminary scan, and the scan line driving circuit carrying out (i) the second preliminary scan in which a preliminary scan signal, which has a voltage of a high level, is supplied and (ii) the first preliminary scan in which a preliminary scan signal, which has an intermediate electric potential between a voltage of a low level in a time period during which the each of the plurality of scan lines is not scanned and the voltage of the high level, is supplied, and the scan line driving circuit continuing, in the preliminary scan, the first preliminary scan from when the second preliminary scan is completed to when the first scan is started.