Patent ID: 11947228
Assignee: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A semiconductor device comprising:
a pixel, the pixel comprising:
a light-emitting element comprising:
a first electrode;
an electroluminescent layer over the first electrode; and
a second electrode over the electroluminescent layer;
a first wiring;
a second wiring;
a third wiring;
a first transistor;
a second transistor; and
a capacitor, and

a scan line drive circuit comprising a third transistor,
wherein the first wiring is electrically connected to one of a source and a drain of the first transistor,
wherein the second wiring is electrically connected to a gate of the first transistor,
wherein the other of the source and the drain of the first transistor is electrically connected to a gate of the second transistor,
wherein the third wiring is electrically connected to one of a source and a drain of the second transistor,
wherein the other of the source and the drain of the second transistor is electrically connected to the first electrode of the light-emitting element,
wherein a first conductive layer is configured to be the gate of the second transistor,
wherein the first conductive layer and a first oxide semiconductor layer overlap with each other,
wherein a second conductive layer is configured to be the other of the source and the drain of the second transistor,
wherein a third conductive layer is configured to be a gate of the third transistor,
wherein the third conductive layer and a second oxide semiconductor layer overlap with each other,
wherein a fourth conductive layer is configured to be one of a source and a drain of the third transistor,
wherein a fifth conductive layer is configured to be one electrode of the capacitor,
wherein a material of the fifth conductive layer is the same as a material of the first conductive layer and the third conductive layer,
wherein a sixth conductive layer is configured to be the other electrode of the capacitor,
wherein an oxide insulating layer comprises a region in contact with a peripheral portion and a side surface of the first oxide semiconductor layer,
wherein the oxide insulating layer comprises a region in contact with a peripheral portion and a side surface of the second oxide semiconductor layer,
wherein a seventh conductive layer and the second oxide semiconductor layer overlap with each other,
wherein a material of the seventh conductive layer is the same as a material of the first electrode,
wherein the second conductive layer is electrically connected to the first oxide semiconductor layer through a contact hole of the oxide insulating layer,
wherein in a cross-sectional view in a channel length direction of the second transistor, end portions of the second conductive layer are in contact with an upper surface of the oxide insulating layer,
wherein the sixth conductive layer comprises a region in contact with an upper surface of a third oxide semiconductor layer,
wherein the first electrode is electrically connected to the second conductive layer, and
wherein the first electrode and the sixth conductive layer overlap with each other.