Display device and electronic device
A display device with a narrow bezel is provided. The display device includes a pixel circuit and a driver circuit which are provided on the same plane. The driver circuit includes a selection circuit and a buffer circuit. The selection circuit includes a first transistor. The buffer circuit includes a second transistor. The first transistor has a region overlapping with the second transistor. One of a source and a drain of the first transistor is electrically connected to a gate of the second transistor. One of a source and a drain of the second transistor is electrically connected to the pixel circuit.
1. A display device comprising:
a pixel circuit and a driver circuit on a same plane as the pixel circuit,
wherein the driver circuit includes a selection circuit and a buffer circuit,
wherein the selection circuit includes a first transistor and the buffer circuit includes a second transistor,
wherein a channel width of the second transistor is larger than a channel width of the first transistor,
wherein an interlayer insulating film is provided over a channel formation region of the second transistor,
wherein a channel formation region of the first transistor is provided over the interlayer insulating film,
wherein one of a source electrode and a drain electrode of the first transistor is electrically connected to a gate electrode of the second transistor through an opening provided in the interlayer insulating film,
wherein one of a source electrode and a drain electrode of the second transistor is electrically connected to a power supply line,
wherein the other of the source and the drain electrode of the second transistor is electrically connected to a gate line of the pixel circuit,
wherein, in a plan view, the power supply line has a region extending in a first direction,
wherein, in the plan view, the gate line has a region extending in the first direction,
wherein, in the plan view, the one of the source electrode and the drain electrode of the first transistor has a region extending in the first direction,
wherein, in the plan view, the other of the source electrode and the drain electrode of the first transistor has a region extending in the first direction,
wherein, in the plan view, a gate electrode of the first transistor has a region extending in a second direction,
wherein, in the plan view, a channel length direction of the second transistor is arranged in the second direction, and
wherein, in the plan view, the gate electrode of the second transistor has a region extending in the first direction.
2. The display device according to claim 1 , wherein a start pulse is input to the gate electrode of the first transistor.
3. The display device according to claim 1 , wherein the channel formation region of the first transistor includes an oxide semiconductor.
4. The display device according to claim 1 , wherein the channel formation region of the second transistor includes silicon.