Active matrix lcd device having two equal coupling capacitances

Abstract

A liquid crystal display panel of the invention includes an active matrix substrate. The active matrix substrate includes: a substrate; a plurality of pixel electrodes for driving a liquid crystal, the pixel electrodes being arranged in rows and columns on the substrate; a plurality of data signal lines for supplying data signals to pixel electrodes of a corresponding column; a plurality of switching devices for electrically connecting each data signal line to the pixel electrodes of the corresponding column; a plurality of scanning signal lines for controlling the switching devices to be conductive; and a plurality of storage capacitances respectively connected to terminals of the switching devices which are connected to the pixel electrodes. Each pixel electrode overlaps a corresponding data signal line with an insulating film interposed therebetween in a first region and overlaps an adjacent data signal line which is connected to pixel electrodes of a neighbor column with the insulating film interposed therebetween in a second region. A first coupling capacitance formed in the first region is substantially equal to a second coupling capacitance formed in the second overlap portion. The active matrix substrate receives the data signals in which polarities are inverted between fields or frames and the polarities are different between the corresponding one and the adjacent one of the data signal lines.