Liquid crystal display device, method of driving liquid crystal display device, and television receiver

摘要

Data signal lines, scanning signal lines, and pixels are formed in each of first and second regions of a liquid crystal panel, and the first half of a current frame and the second half of the current frame are written to the first and second regions, respectively. A data signal with polarity inverted for each vertical scanning period is supplied to each data signal line. A scanning direction of the first region is identical to a scanning direction of the second region and the first and second regions are arranged to line up in this order in the scanning direction. In the first and second regions, the potential of the data signal is corrected according to a distance from a scanning start end portion.

主权项

1. A liquid crystal display device in which data signal lines, scanning signal lines, and pixels are formed in each of first and second regions installed in a display unit and in which a part of a current frame is written to the first region and the remainder of the current frame is written to the second region, wherein
a data signal with polarity inverted for each vertical scanning period or every plurality of vertical scanning periods is supplied to each data signal line, a scanning direction in the first region is identical to a scanning direction in the second region and the first and second regions are arranged to line up in this order in the scanning direction, and at least in the first region, a potential of the data signal supplied to each data signal line is corrected according to a distance from a pixel corresponding to the scanning signal line scanned in the first horizontal scanning period, when n (where n is an integer equal to or greater than 1) scanning signal lines are installed in the first region and Vsl is assumed to be the potential of the data signal corresponding to a video signal input from an outside, a corrected potential Vsl′(k) (where k is an integer equal to or greater than 1 or equal to and less than n) of the data signal supplied to each data signal line of the first region for a k-th horizontal scanning period is expressed as in:
(i) Vsl′(k)=Vsl+ΔVp×(k−1)/n, when a potential of a pixel electrode supplied with the data signal in the k-th horizontal scanning period is decreased by ΔVp by polarity inversion of the data signal, and(ii) Vsl′(k)=Vsl−ΔVph×(k−1)/n, when the potential of the pixel electrode supplied with the data signal in the k-th horizontal scanning period is increased by ΔVph by the polarity inversion of the data signal.