In order to increase an aperture ratio, a part of or all of a gate electrode that overlaps with channel formation regions (213, 214) of a pixel TFT is caused to overlap with second wirings (source line or drain line) (154, 157). Additionally, a first interlayer insulating film (149) and a second interlayer insulating film (150c) are disposed between the gate electrode and the second wirings (154, 157) so as to decrease a parasitic capacitance.