Patent ID: 8115210

Claim:
A display device comprising: a pixel portion over a substrate; an input terminal over the substrate; a wiring electrically connected between the pixel portion and the input terminal; a first transistor wherein a gate of the first transistor and one of a source and a drain of the first transistor are electrically connected to a first voltage line, and the other of the source and the drain of the first transistor is electrically connected to the wiring; a second transistor wherein a gate of the second transistor and one of a source and a drain of the second transistor are electrically connected to the wiring, and the other of the source and the drain of the second transistor is electrically connected to a second voltage line; a capacitor comprising a first electrode and a second electrode wherein the first electrode is electrically connected to the wiring, and the second electrode is electrically connected to one of the first voltage line and the second voltage line.