Patent ID: 11917838
Assignee: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Field: nan (nan)
Classification: CPC nan | IPC G  H

Claim 4:
5. A semiconductor device comprising:
a first transistor; and
a second transistor,
wherein a channel formation region of the first transistor comprises silicon,
wherein a channel formation region of the second transistor comprises an oxide semiconductor,
wherein a first insulating layer is provided over the channel formation region of the first transistor,
wherein a first gate electrode of the first transistor is provided over the first insulating layer,
wherein the first gate electrode of the first transistor is electrically connected to one of a source and a drain of the second transistor,
wherein the one of the source and the drain of the second transistor is in contact with a top surface of a layer which comprises the oxide semiconductor,
wherein a second gate electrode of the second transistor is provided below the channel formation region of the second transistor, and
wherein, in a cross-sectional view, the layer which comprises the oxide semiconductor extends beyond an end portion of the second gate electrode.