PIXEL CIRCUIT, DISPLAY DEVICE, DRIVING METHOD OF PIXEL CIRCUIT, AND DRIVING METHOD OF DISPLAY DEVICE

摘要

A pixel circuit includes a drive transistor that has a gate connected to an input node and a source connected to an output node. The drive transistor supplies a driving current to an electrooptic element via the output node. A sampling transistor is connected between the input node and a signal line and samples an input signal from the signal line, which is retained in a retaining capacitance connected to the input node. The magnitude of the driving current is based on a value of the retained signal. The pixel circuit further includes a compensating circuit which detects a decrease in the driving current attendant on a secular change of the drive transistor from a side of the output node and feeds back a result of the detection to a side of the input node to compensate for the decrease.