Patent ID: 9741400
Date: 2017-08-22
CPC Classifications: G11C,H01L

Claim:
1. A semiconductor device comprising: a first transistor and a second transistor; a capacitor; a first wiring and a second wiring; a buffer circuit electrically connected to the first wiring; and a sense amplifier circuit electrically connected to the second wiring, wherein: the first transistor comprises an oxide semiconductor film, a first gate electrode, a second gate electrode, a first gate insulating film, and a second gate insulating film, the second transistor comprises the oxide semiconductor film, the second gate electrode is electrically connected to the first wiring, one of source and drain electrodes of the second transistor is electrically connected to the second wiring, and the capacitor is electrically connected to one of source and drain electrodes of the first transistor, and the other of the source and drain electrodes of the second transistor.