Electronic device

An electronic device comprising:

• a semiconductor device,
• wherein the semiconductor device has a structure where a first element layer, a second element layer, and a third element layer are stacked,
• wherein the first element layer comprises a first transistor comprising a semiconductor layer comprising silicon in a channel formation region,
• wherein the second element layer comprises a second transistor comprising a semiconductor layer comprising a metal oxide in a channel formation region,
• wherein the third element layer comprises a light-emitting device,
• wherein the first element layer comprises an arithmetic circuit comprising a scan flip-flop and a first driver circuit configured to drive a pixel circuit electrically connected to the light-emitting device, and
• wherein the second element layer comprises a backup circuit electrically connected to the scan flip-flop, the pixel circuit, and a second diver circuit configured to drive the pixel circuit.

An electronic device comprising a semiconductor device,

• wherein the semiconductor device has a structure where a first element layer, a second element layer, a third element layer, and a fourth element layer are stacked,
• wherein the first element layer comprises a first transistor comprising a semiconductor layer comprising silicon in a channel formation region,
• wherein the second element layer comprises a second transistor comprising a first semiconductor layer comprising a metal oxide in a channel formation region,
• wherein the third element layer comprises a third transistor comprising a second semiconductor layer comprising a metal oxide in a channel formation region,
• wherein the fourth element layer comprises a light-emitting device,
• wherein the first element layer comprises an arithmetic circuit comprising a scan flip-flop and a first driver circuit configured to drive a pixel circuit electrically connected to the light-emitting device,
• wherein the second element layer comprises a backup circuit electrically connected to the scan flip-flop and a second driver circuit for driving configured to drive the pixel circuit, and
• wherein the third element layer comprises the pixel circuit.