To realize new constitution for driving a driven element by injection of a current and to accurately charge the gate electrode of a current driving transistor, specially, in constitution using the current driving transistor for supplying a current to the driven element.
Provided are at least a pixel circuit which has the driven element and the current driving transistor supplying a current for driving the driven element to a current injection terminal of the driven element, a voltage buffer, a current signal line for supplying a current signal to the pixel circuit, a wire which connects the output of the voltage buffer and the gate electrode of the current driving transistor. The pixel circuit has a switch controlling the connection between the voltage buffer and the gate electrode of the current driving transistor and a driving circuit is provided which has the input terminal of the voltage buffer connected to the current signal line.
Yoshihiro Yamaguchi