A transistor circuit including a driving transistor where conductance between a source and a drain is controlled in response to voltage, and a compensating transistor where a gate is connected to oneof a source and a drain and wherein the compensating transistor is connected so as to supply input signals to the gate of the driving transistor through the source and drain. In a transistor circuit where conductance control in a driving transistor is carried out in response to the voltage of input signals, it is possible to control the conductance by using input signals of a relatively low voltage and a variance in threshold characteristics of driving transistors is compensated. With this transistor circuit, a display panel that can display picture images with reduced uneven brightness is achieved.