The invention provides a display device with high image quality and high definition, a driving method thereof and an element substrate. Further, the invention provides a display device with improved degradation of a light emitting element, a driving method thereof and an element substrate. The display device of the invention has a first transistor, a second transistor, a third transistor, a light emitting element, a source driver, a first gate driver, and a second gate driver. A gate electrode of the first transistor is connected to a gate line, one of a source electrode and a drain electrode thereof is connected to a source line and the other is connected to a gate electrode of the third transistor. 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. A gate electrode of the second transistor is connected to a third power source, the source driver is connected to the source line, and the first gate driver and the second gate driver are connected to the gate line.