Patent ID: 8878706

Claim:
A semiconductor device comprising: a input portion; a first signal line; a second signal line; an output portion; and m units (m is a natural number greater than or equal to 1) each comprising: a first transistor; a second transistor; a third transistor; a capacitor; and an amplifier; wherein a gate of the first transistor is electrically connected to the first signal line, wherein a gate of the second transistor is electrically connected to the second signal line, wherein one of a source of the first transistor and a drain of the first transistor is electrically connected to a first potential line, wherein one of a source of the second transistor and a drain of the second transistor is electrically connected to the other of the source of the first transistor and the drain of the first transistor, wherein the other of the source of the second transistor and the drain of the second transistor is electrically connected to a second potential line, wherein a gate of the third transistor is electrically connected to the other of the source of the first transistor and the drain of the first transistor, wherein one of a source of the third transistor and a drain of the third transistor is electrically connected to the input portion, wherein a first electrode of the capacitor is electrically connected to the other of the source of the third transistor and the drain of the third transistor, wherein a second electrode of the capacitor is electrically connected to a third potential line, wherein an input terminal of the amplifier is electrically connected to the other of the source of the third transistor and the drain of the third transistor, and wherein an output terminal of the amplifier is electrically connected to the output portion.