Patent ID: 7683860

Claim:
A display device comprising: a first transistor; a second transistor; a third transistor; a light emitting element; a gate line; a source line across the gate line; a first power source line across the gate line; a second power source line arranged parallel to the first power source line; a source driver; a first gate driver; and a second gate driver, wherein a gate electrode of the first transistor is connected to a gate line, one of a source electrode and a drain electrode of the first transistor is connected to the source line, and the other of the source electrode and the drain electrode of the first transistor is connected to a gate electrode of the third transistor, wherein the light emitting element, the second transistor and the third transistor are connected in series between a first power source and a second power source, wherein a gate electrode of the second transistor is connected to a second power source line so that a gate potential of the second transistor is constantly fixed to the potential of the second power source, wherein the source driver is connected to the source line, and wherein the first gate driver and the second gate driver are connected to the gate line.