Pixel circuit, display device, and electronic appliance

A display device including a pixel circuit provided on a substrate on which a signal line in which a signal potential and a reference potential are alternately switched, a fixed power line, and a variable power line switched between a first potential and a second potential are arranged, the pixel circuit comprising:

• a capacitance element;
• a sampling transistor connected between the signal line and a first terminal of the capacitance element;
• a drive transistor connected to the fixed power line;
• an initializing transistor connected between a second terminal of the capacitance element and the drive transistor;
• and
• a light emitting element connected between the variable power line and the drive transistor,
• wherein when the variable power line is held at the first potential, the signal potential is supplied to the first terminal of the capacitance element via the sampling transistor while the initializing transistor is turned on,
• wherein the initializing transistor is turned off while the reference potential is supplied to the first terminal of the capacitance element via the sampling transistor, and
• wherein the sampling transistor is turned off while the variable power line is switched from the first potential to the second potential.