LIQUID CRYSTAL DISPLAY DEVICE AND POTENTIAL SETTING METHOD THEREFOR

摘要

A liquid crystal display device (1) comprises a plurality of pixels (30) which comprise a plurality of source bus lines (14), a plurality of gate bus lines (11) intersecting the source bus lines (14), a TFT (5), pixel electrodes (19), a common electrode (24), and a liquid crystal layer (4) and which are arranged in a matrix, corresponding to each intersection between the gate bus lines (11) and the source bus lines (14); and a potential control unit which controls the potential of the common electrode (24). The potential control unit sets a voltage which is smaller by a predetermined voltage than the potential Vcenf255 of the common electrode (24) at which flicker is minimized when the black display is represented by the 0-th gradation and the white display is represented by the 255-th gradation and when a display with the 0-th gradation and a display with the 255-th gradation are performed for each pixel, as a central voltage Vcen255 of the common electrode (24) when a display with the 255-th gradation is performed in all of the plurality of pixels (30).