A display apparatus, that includes current driving type luminescent elements, has a driving
system that takes the conduction types of TFTs to control the emission of the luminescent elements into consideration. In order to reduce driving
voltage and improve display quality simultaneously, the arrangement is provided such that if the second TFT (30) which performs the "on-off" function of the current for the luminescent element (40) is of an
N channel type, the potential of the common power supply line ("com") is lowered below the potential of the opposite
electrode ("op") of the luminescent element (40) to obtain a higher
gate voltage ("Vgcur"). In this case, if the first TFT (20) connected to the gate of the second TFT (30) is of a
P channel type, when using the potential of the potential-holding
electrode ("st") at the "on" state as a reference, potentials of the scanning
signal ("Sgate") at the lower potential and the common power supply line ("com") are rendered of the same polarities with respect to this potential of the potential-holding
electrode ("st"). Therefore, the potential of the
image signal ("data") to turn "on" can be shifted within the range of the driving
voltage in the display apparatus (1) in the direction to reduce resistances at the "on" states of the first TFT (20) and the second TFT (30) to reduce driving
voltage and improve display quality.