Patent ID: 11959165
Assignee: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC C  B  H | IPC B  C  H

Claim 2:
3. A semiconductor device comprising:
a transistor;
a first insulating film;
an oxide semiconductor film comprising a channel of the transistor over and in contact with the first insulating film;
a gate electrode of the transistor overlapping with the oxide semiconductor film with a gate insulating film of the transistor provided therebetween;
a second insulating film over the gate electrode; and
a wiring over the second insulating film,
wherein the wiring is electrically connected to the oxide semiconductor film via a first opening provided in the second insulating film and the gate insulating film,
wherein the oxide semiconductor film comprises a second opening overlapping with the first opening,
wherein the oxide semiconductor film is in contact with the wiring in the second opening,
wherein the wiring has a region overlapping with a conductive film provided below the oxide semiconductor film, and
wherein the conductive film is in contact with the first insulating film.