Light-emitting display device having a first pixel and a second pixel and an oxide semiconductor layer having a region overlapping a light-emitting region of the second pixel

A display device comprising:

• a first pixel including a first transistor, a second transistor and a first light-emitting element;
• and
• a second pixel next to the first pixel,
• wherein the first light-emitting element includes a first electrode electrically connected to the second transistor,
• wherein the first transistor includes a first oxide semiconductor layer in a channel formation region,
• wherein the first oxide semiconductor layer includes a region overlapping a first wiring,
• wherein a portion of the first wiring is configured to be a gate electrode of the first transistor,
• wherein, in a plan view, a channel length direction of the first transistor crosses a direction in which the first wiring extends,
• wherein, in the plan view, the channel length direction of the first transistor is aligned with a channel length direction of the second transistor,
• wherein, in the plan view, the first oxide semiconductor layer does 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 the second pixel.