Patent ID: 8149043

Claim:
A semiconductor device comprising: a first transistor; a second transistor; a first capacitor; a second capacitor, a first switch; a second switch; a third switch; and a fourth switch, wherein: a gate of the first transistor is electrically connected to one terminal of the first capacitor, the other terminal of the first capacitor is electrically connected to one terminal of the first switch and one terminal of the second switch, the other terminal of the second switch is electrically connected to one of a source and a drain of the first transistor, one of a source and a drain of the second transistor, one terminal of the third switch, and one terminal of the fourth switch, the other terminal of the fourth switch is electrically connected to a gate of the second transistor and one terminal of the second capacitor, the other terminal of the second capacitor is electrically connected to the other of the source and the drain of the second transistor, the other terminal of the first switch is electrically connected to an input terminal, and the other terminal of the third switch is electrically connected to an output terminal.