Patent ID: 9305507
Filing Date: 2016-04-05
CPC Classification: G09G

Claim Text:
1. An active matrix-type liquid crystal display device comprising: a plurality of video signal lines for transmitting a plurality of video signals, respectively, the video signals representing an image to be displayed; a plurality of scanning signal lines that intersect the plurality of video signal lines; a plurality of pixel electrodes provided in a plurality of pixel formation portions, respectively, the pixel formation portions being arranged in a matrix corresponding respectively to intersections of the plurality of video signal lines and the plurality of scanning signal lines; a common electrode provided so as to be shared by the plurality of pixel electrodes, and provided so as to face the plurality of pixel electrodes with a liquid crystal there between; a video signal line drive circuit that outputs the plurality of video signals to the plurality of video signal lines; and a scanning signal line drive circuit that outputs a plurality of scanning signals to sequentially drive the plurality of scanning signal lines, wherein when any scanning signal line is focused, among the plurality of pixel electrodes, pixel electrodes provided in pixel formation portions to which the corresponding scanning signal is provided from the focused scanning signal line are arranged in a staggered manner with the focused scanning signal line centered, in each pixel formation portion, a period during which a positive polarity voltage is applied to the liquid crystal is longer than a period during which a negative polarity voltage is applied to the liquid crystal, one-frame-reversal driving where a polarity of a voltage applied to the liquid crystal is reversed every frame and multi-frame-reversal driving where the polarity of the voltage applied to the liquid crystal is reversed every multiple frames are switchable, when at least the one-frame-reversal driving is performed, in each pixel formation portion, a period during which a positive polarity voltage is applied to the liquid crystal is longer than a period during which a negative polarity voltage is applied to the liquid crystal, when a length of a period during which a positive polarity voltage is applied to the liquid crystal in each pixel formation portion when the one-frame-reversal driving is performed is T