Patent ID: 11935965
Assignee: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 0:
1. A semiconductor device comprising a transistor and a capacitor, the semiconductor device comprising:
an oxide semiconductor layer;
a first conductive layer and a second conductive layer, each having a region in contact with a bottom surface of the oxide semiconductor layer;
a first insulating film over the oxide semiconductor layer;
a third conductive layer over the first insulating film and overlapping the oxide semiconductor layer;
a second insulating layer over the third conductive layer;
a fourth conductive layer over the second insulating layer and in electrical contact with the second conductive layer;
a fifth conductive layer under the fourth conductive layer and overlapping the fourth conductive layer;
a sixth conductive layer under the fifth conductive layer and overlapping the fifth conductive layer;
a third insulating film under the oxide semiconductor layer, the first conductive layer, the second conductive layer and the fifth conductive layer;
a seventh conductive layer under the third insulating film, overlapping the oxide semiconductor layer, and in electrical contact with the first conductive layer;
wherein each of the oxide semiconductor layer, the first conductive layer, the second conductive layer and the fifth conductive layer is in contact with a top surface of the third insulating film,
wherein the third insulating film is in contact with a top surface of the sixth conductive layer and a top surface of the seventh conductive layer, and
wherein the sixth conductive layer has a region overlapping the fourth conductive layer and the fifth conductive layer, and has a region overlapping the fourth conductive layer without overlapping the fifth conductive layer.