Semiconductor device, display device and electronic device equipped with the semiconductor device

A display device comprising:

• a first wire to which a first potential is applied;
• a second wire to which a second potential is applied;
• a pixel comprising:
• a first transistor;
• a second transistor;
• a first switch;
• a second switch;
• a capacitor;
• and
• a load;
• and
• a driver circuit provided in an IC chip;
• wherein one of a source and a drain of the first transistor is electrically connected to a first terminal of the first switch and the first wire,
• wherein the other of the source and the drain of the first transistor is electrically connected to a second terminal of the first switch and one of a source and a drain of the second transistor,
• wherein a gate of the first transistor is electrically connected to a gate of the second transistor, a first terminal of the capacitor, and a first terminal of the second switch,
• wherein a second terminal of the capacitor is electrically connected to the other of the source and the drain of the second transistor and the load,
• wherein a second terminal of the second switch is electrically connected to the second wire,
• wherein a value of the first potential is different from that of the second potential, and
• wherein the first transistor comprises an oxide semiconductor.

A display device comprising:

• a first wire to which a first potential is applied;
• a second wire to which a second potential is applied;
• a pixel comprising:
• a first transistor;
• a second transistor;
• a first switch;
• a second switch;
• a third switch;
• a current source;
• a capacitor;
• and
• a load;
• and
• a driver circuit,
• wherein one of a source and a drain of the first transistor is electrically connected to a first terminal of the first switch and the first wire,
• wherein the other of the source and the drain of the first transistor is electrically connected to a second terminal of the first switch and one of a source and a drain of the second transistor,
• wherein a gate of the first transistor is electrically connected to a gate of the second transistor, a first terminal of the capacitor, and a first terminal of the second switch,
• wherein a second terminal of the capacitor is electrically connected to the other of the source and the drain of the second transistor, the load, and a first terminal of the third switch,
• wherein a second terminal of the second switch is electrically connected to the second wire,
• wherein a second terminal of the third switch is electrically connected to the current source,
• wherein a value of the first potential is different from that of the second potential, and
• wherein the first transistor comprises an oxide semiconductor.