Patent ID: 8004481

Claim:
A display device comprising, in a pixel: a first wiring, a second wiring, a third wiring, and a fourth wiring; a light emitting element including a pixel electrode and a counter electrode; a first transistor; a second transistor; and a third transistor, wherein a gate electrode of the first transistor is electrically connected to the first wiring; one of a source electrode and a drain electrode of the first transistor is electrically connected to the second wiring in which a video signal is transmitted, and the other one is electrically connected to a gate electrode of the second transistor; one of a source electrode and a drain electrode of the second transistor is electrically connected to the third wiring, and the other one is electrically connected to the pixel electrode; one of a source electrode and a drain electrode of the third transistor is electrically connected to the pixel electrode, and the other one is electrically connected to the gate electrode of the second transistor; a gate electrode of the third transistor is connected to the fourth wiring; and each of the first transistor, the second transistor, and the third transistor is an N-channel transistor.