Light-emitting display device and electronic device including a first pixel and a second pixel and an oxide semiconductor region overlapping a light-emitting region

A display device comprising:

• a first pixel including a first transistor, a second transistor, and a light-emitting element,
• wherein one of a source and a drain of the first transistor is electrically connected to a gate electrode of the second transistor,
• wherein the light-emitting element 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 a power supply line,
• wherein the first transistor includes a first channel formation region, and the second transistor includes a second channel formation region,
• wherein the first channel formation region includes a first oxide semiconductor layer, and the second channel formation region includes a second oxide semiconductor layer,
• wherein a first conductive layer configured to be a gate electrode of the first transistor and to be a first wiring overlaps the first oxide semiconductor layer,
• wherein a second conductive layer configured to be the gate electrode of the second transistor overlaps the second oxide semiconductor layer and is formed on a same surface as the first conductive layer,
• wherein the power supply line includes a third conductive layer configured to be a second wiring,
• wherein, in a plan view, a channel length direction of the first transistor and a channel length direction of the second transistor extend in a first direction,
• wherein, in the plan view, the first wiring extends in a second direction crossing the first direction,
• wherein, in the plan view, the second wiring extends in the first direction,
• wherein, in the plan view, the first oxide semiconductor layer and the second oxide semiconductor layer do not have a region overlapping a light-emitting region of the first pixel, and
• wherein, in the plan view, the first oxide semiconductor layer has a region overlapping a light-emitting region of a second pixel next to the first pixel.