Provided is a technique of suppressing display defects such as flicker, without limiting the arrangement of data lines, in a liquid crystal display device having a display area in a non-rectangular shape. A liquid crystal display device includes an active matrix substrate 10, a counter substrate, and a liquid crystal layer. The active matrix substrate 10 includes a plurality of gate lines 11, and a plurality of data lines 12. In each of pixels defined by the gate lines 11 and the data lines 12, a pixel electrode 14 is arranged, and in a display area R, common electrodes 15 are provided. Outside the display area R, capacitance-generating parts C that generate capacitances between some gate lines 11 among the plurality of gate lines 11 and the common electrode are provided. The some gate lines 11 have lengths smaller than the gate lines having the maximum length, and intersect with some data lines 12 among the plurality of data lines 12. The capacitance-generating parts C are provided in such a manner that at least one capacitance-generating part C is provided with respect to one of the some gate lines 11.