Patent ID: 8593066

Claim:
A semiconductor device comprising: a first gate driver electrically connecting to a first scanning line; a second gate driver electrically connecting to a second scanning line; a power line; a signal line; a first transistor; a second transistor; a third transistor; a fourth transistor; and a capacitor, wherein a gate of the third transistor is electrically connected to the first scanning line, wherein a gate of the fourth transistor is electrically connected to the first scanning line, wherein a gate of the second transistor is electrically connected to the second scanning line, wherein one of a source and a drain of the third transistor is electrically connected to a gate of the first transistor, wherein one of a source and a drain of the first transistor is electrically connected to the power line and the other of the source and the drain of the first transistor is electrically connected to one of a source and a drain of the second transistor, and wherein an electrode of the capacitor includes a semiconductor film.