Patent ID: 7355572

Claim:
A pixel circuit for driving an electro-optical element changing in luminance according to a flowing current, comprising: a data line to which a data signal in accordance with a luminance information is supplied; first, second, third, and fourth nodes; first and second reference potentials; a reference current supplying means for supplying a predetermined reference current; an electric connecting means connected to the second node; a pixel capacitor element connected between the first node and the second node; a coupling capacitor element connected between the electric connecting means and the fourth node; a drive transistor forming a current supply line between a first terminal and a second terminal and controlling a current flowing in the current supply line in accordance with the potential of the control terminal connected to the second node; a first switch connected between the first node and the third node; a second switch connected between the third node and the fourth node; a third switch connected between the first node and a fixed potential; a fourth switch connected between the second node and a predetermined potential line; a fifth switch connected between the data line and the fourth switch; and a sixth switch connected between the third node and the reference current supplying means, wherein, between the first reference potential and the second reference potential, the current supply line of the drive transistor, the first node, the third node, the first switch, and the electro-optical element are connected in series.