Patent ID: 11887535
Assignee: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A display device comprising:
a pixel comprising:
a first transistor;
a second transistor;
a third transistor;
a first capacitor; and
a light-emitting element; and

a power supply line,
wherein one of a source and a drain of the first transistor is electrically connected to the light-emitting element,
wherein the other of the source and the drain of the first transistor 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 power supply line,
wherein one of a source and a drain of the third transistor is electrically connected to a gate of the first transistor,
wherein the other of the source and the drain of the third transistor is electrically connected to the other of the source and the drain of the first transistor,
wherein a first electrode of the first capacitor is electrically connected to the gate of the first transistor,
wherein a second electrode of the first capacitor is electrically connected to the light-emitting element,
wherein a semiconductor film comprises a first part comprising a channel formation region of the first transistor, a second part comprising a channel formation region of the second transistor and a third part connecting the first part with the second part,
wherein the power supply line comprises a first part overlapping the third part of the semiconductor film and a second part having a larger width than the first part of the power supply line,
wherein the power supply line is electrically connected to the semiconductor film through a contact hole, and
wherein second part of the power supply line overlaps the contact hole.