Patent ID: 7528643

Claim:
A semiconductor device comprising: one or more circuit elements, each of the circuit elements comprising a first transistor and a second transistor; a first capacitor; a second capacitor; a first switch; a second switch; and a first wiring, wherein a first electrode of the first capacitor is electrically connected to an input terminal; wherein a first electrode of the second capacitor is electrically connected to the input terminal; wherein a supply of a first potential to a second electrode of the first capacitor is controlled by the first switch; wherein a supply of a second potential to a second electrode of the second capacitor is controlled by the second switch; wherein a potential of the second electrode of the first capacitor is supplied to the first transistor; wherein a potential of the second electrode of the second capacitor is supplied to the second transistor; wherein the second electrode of the first capacitor is directly connected to a gate of the first transistor; wherein the second potential is supplied to a source of the second transistor; wherein the input terminal is configured to supply signals to the first electrode of the first capacitor and the first electrode of the second capacitor; wherein the first switch switches on and off in accordance with the signals; wherein the second switch switches on and off in accordance with the signals; wherein the second electrode of the first capacitor and the gate of the first transistor are connected to the first wiring through the first switch; and wherein the first wiring is connected to a source or drain electrode of the first transistor.