Patent ID: 7760162

Claim:
An electronic device, comprising: a plurality of first signal lines; a plurality of second signal lines; a plurality of power lines providing a constant driving voltage, including a plurality of first power lines and a plurality of second power lines; a switching element connected to one first power line of the plurality of first power lines that controls a potential of the one first power line of the plurality of first power lines; a voltage storage device; and a plurality of unit circuits, transistors included in each of the plurality of unit circuits being only a first transistor, a second transistor, and a third transistor, the first transistor having a first gate, a first terminal, and a second terminal, the second transistor having a second gate, a third terminal, and a fourth terminal, the third transistor having a third gate, a fifth terminal, and a sixth terminal, a conduction state of the first transistor determining at least one of a driving current and a driving voltage that are supplied to a driven element, the third gate being connected to one first signal line of the plurality of first signal lines, the third terminal being connected to the first gate and the second gate, the fourth terminal being directly connected to the one first power line of the plurality of first power lines, the sixth terminal being connected to one of the plurality of second signal lines the second terminal being connected to one second power line of the plurality of second power lines, the voltage storage device being connected to the first gate and the second terminal, the fifth terminal being connected to the first gate, and at least one of the plurality of unit circuits having a driving period, the driving period including a writing period preceding a functional period, the writing period including enabling the third transistor via the one first signal line of the plurality of signal lines and enabling the switching element via a power line control signal, the functional period including disabling the third transistor via the one first signal line of the plurality of signal lines and disabling the switching element via the power line control signal.