Patent ID: 7456810

Claim:
A light emitting device comprising: a pixel including a source signal line, first through fourth gate signal lines, a current supply line, first through fifth transistors, a capacitor means, and a light emitting element, wherein a gate electrode of the first transistor is electrically connected to the first gate signal line, a first electrode of the first transistor is electrically connected to the source signal line, and a second electrode of the first transistor is electrically connected to a first electrode of the capacitor means and to a first electrode of the second transistor; a gate electrode of the second transistor is electrically connected to the second gate signal line, and a second electrode of the second transistor is electrically connected to the current supply line; a second electrode of the capacitor means is electrically connected to a first electrode of the third transistor and to a gate electrode of the fifth transistor; a gate electrode of the third transistor is electrically connected to the third gate signal line, and a second electrode of the third transistor is electrically connected to a first electrode of the fourth transistor and to a first electrode of the fifth transistor; a gate electrode of the fourth transistor is electrically connected to the fourth gate signal line, a second electrode of the fourth transistor is electrically connected to a first electrode of the light emitting element; and a second electrode of the fifth transistor is electrically connected to the current supply line.