Patent ID: 8258847
Filing Date: 2012-09-04
Classification: H03K

Abstract:
1. A semiconductor device comprising: a first capacitor including a first electrode and a second electrode; a second capacitor including a first electrode and a second electrode, the first electrode of the second capacitor being electrically connected to the first electrode of the first capacitor; a first transistor including a gate, a source and a drain, the gate of the first transistor being electrically connected to the second electrode of the first capacitor; a first wiring electrically connected to one of the source and the drain of the first transistor; a second transistor including a gate, a source and a drain, the gate of the second transistor being electrically connected to the second electrode of the second capacitor, one of the source and the drain of the second transistor being electrically connected to the other of the source and the drain of the first transistor; a second wiring electrically connected to the other of the source and the drain of the second transistor; a third transistor electrically connected between the second electrode of the first capacitor and the first wiring; and a fourth transistor electrically connected between the second electrode of the second capacitor and the second wiring, wherein the first electrode of the first capacitor is formed of a third wiring and a first semiconductor layer which is electrically connected to the third wiring, and wherein the second electrode of the first capacitor is formed of a same layer as the gate of the first transistor.