In an active matrix substrate, a glass substrate is provided with TFTs
having gate electrodes connected to scanning lines also provided on the
glass substrate. The glass substrate is further provided with auxiliary
capacitance lines, formed on the same layer as the scanning lines.
Further, pixel electrodes connected to drain electrodes of the TFTs are
formed on the same layer as signal lines connected to source electrodes of
the TFTs. An insulating layer is provided between the layer forming the
signal lines and pixel electrodes and the layer forming the drain and
source electrodes. Since the insulating film is present between the signal
lines and the scanning and auxiliary capacitance lines, influence on the
auxiliary capacitance value can be reduced, as can a signal line
capacitance value. As a result, even when the auxiliary capacitance value
is increased, the signal line capacitance value remains small.