According to one embodiment, a display device includes a scanning line, a semiconductor layer, a first inorganic insulating film located between the scanning line and the semiconductor layer, a first signal line, a second inorganic insulating film having a main surface which contacts the first signal line and located between the semiconductor layer and the first signal line, a capacitance electrode contacting the main surface, a pixel electrode overlapping the capacitance electrode, and a third inorganic insulating film covering the first signal line and the capacitance electrode and located between the first signal line and the pixel electrode and between the capacitance electrode and the pixel electrode.