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 over a substrate,
wherein the driver circuit includes a shift register circuit and a buffer circuit,
wherein the shift register circuit includes a first transistor,
wherein the buffer circuit includes a second transistor,
wherein the shift register circuit is provided over the buffer circuit,
wherein the first transistor has a same conductivity type as the second transistor,
wherein one of a source and a drain of the first transistor is electrically connected to a gate of the second transistor, and
wherein a channel length direction of the first transistor is not in parallel with a channel length direction of the second transistor.
2. The display device according to claim 1 , wherein the driver circuit is a gate driver.
3. The display device according to claim 1 , further comprising a planarization film between the shift register circuit and the buffer circuit.
4. The display device according to claim 1 , wherein channel formation regions of the plurality of first transistors and the plurality of second transistors include a metal oxide.
5. An electronic device comprising a touch sensor overlapping with the display device, and the display device according to claim 1 .
6. A display device comprising:
a pixel circuit and a driver circuit over a substrate,
wherein the driver circuit includes a shift register circuit and a buffer circuit,
wherein the shift register circuit includes a first transistor,
wherein the buffer circuit includes a second transistor,
wherein the shift register circuit is provided over the buffer circuit,
wherein a width of the buffer circuit is larger than a width of the shift register circuit,
wherein the first transistor has a same conductivity type as the second transistor,
wherein one of a source and a drain of the first transistor is electrically connected to a gate of the second transistor, and
wherein a channel length direction of the first transistor is not in parallel with a channel length direction of the second transistor.
7. The display device according to claim 6 , wherein the driver circuit is a gate driver.
8. The display device according to claim 6 , further comprising a planarization film between the shift register circuit and the buffer circuit.
9. The display device according to claim 6 , wherein channel formation regions of the plurality of first transistors and the plurality of second transistors include a metal oxide.
10. An electronic device comprising a touch sensor overlapping with the display device, and the display device according to claim 6 .