Active matrix substrate and display device including the same

Abstract

The invention provides a technique inhibiting luminance unevenness among pixels. An active matrix substrate has a plurality of pixel electrodes PXB each connected to a corresponding one of gate linesand a corresponding one of source lines. The active matrix substrate includes a common electrodefacing each of the pixel electrodes PXB, and an auxiliary lineconnected to the common electrode. The active matrix substrate further includes a plurality of drive circuits disposed in part of a display region and each configured to drive a corresponding one of the gate lines. The drive circuits are each connected to a control line provided for supply of a drive signal. The drive signal has first potential and second potential lower than the first potential alternately at constant cycles. The control line has a line portionextending substantially in parallel with the gate lines. Between the line portionand a capacitance forming region r where each of the pixel electrodes PXB connected to gate lines() and(+2) switched into an unselected state during potential decrease of the line portionforms capacitance between the pixel electrode PXB and the common electrode, the auxiliary lineis connected with the common electrode