Patent ID: 8026882
Filing Date: 2011-09-27
Classification: G09G

Abstract:
1. A drive circuit for a display that applies a driving video signal to a plurality of video signal lines arranged in a display unit and thereby displays an image on the display unit, the drive circuit comprising: a display control circuit that outputs a video signal for generating the driving video signal, a source start pulse signal in which a pulse appears every horizontal scanning period, and a source shift clock signal which is a clock signal and in which a pulse having a first width repeatedly appears every horizontal scanning period, based on a source clock signal in which a pulse having a predetermined width repeatedly appears and an image signal to be provided from an external source; and a video signal line drive circuit that receives the video signal, the source start pulse signal, and the source shift clock signal which are outputted from the display control circuit, samples the video signal based on a pulse of the source shift clock signal after a pulse of the source start pulse signal is outputted in each horizontal scanning period, and applies a voltage based on the sampled video signal to the plurality of video signal lines as the driving video signal, wherein the display control circuit makes a width of a pulse of the source shift clock signal, which is outputted immediately before a pulse of the source start pulse signal is outputted, smaller than the first width.