Patent ID: 8791888

Claim:
A pixel circuit disposed at a part where a scanning line and a signal line intersect each other, said pixel circuit comprising at least: an electrooptic element; a drive transistor; a sampling transistor; a retaining capacitance; said drive transistor having a gate connected to an input node, a source connected to an output node, and a drain connected to a predetermined power supply potential; said electrooptic element having one terminal connected to said output node and another terminal connected to a predetermined potential; said retaining capacitance being coupled to said input node; said sampling transistor operating when selected by said scanning line, sampling an input signal from said signal line, and retaining the input signal in said retaining capacitance; said drive transistor supplying a driving current to said electrooptic element according to a signal potential retained in said retaining capacitance; and a compensating circuit configured to compensate for a decrease in said driving current resulting from a secular change of said drive transistor by detecting a decrease in said driving current from a side of said output node, and feed back a result of detection to a side of said input node, said compensating circuit including a detecting section including a resistive component inserted between said output node and a predetermined ground potential and a capacitive component, the detection section being configured to retain as a detection potential, a voltage drop occurring in said resistive component when said driving current flows from said output node to the ground potential, and a feedback section configured to add a difference between said input signal and said detection potential to said signal potential retained in said retaining capacitance.