Patent ID: 7772766

Claim:
A light-emitting device in which, on a substrate, an element forming region has a light-emitting region and a non-light-emitting region formed outside of the light-emitting region, the light-emitting device comprising: a plurality of unit circuits that are arranged in the light-emitting region, each of the plurality of unit circuits having a light-emitting element that has a first electrode and a second electrode, and a first transistor that controls a current flowing to the light-emitting element; a plurality of dummy unit circuits that are arranged in the non-light-emitting region, each of the plurality of dummy unit circuits having a second transistor; and a current supply line that is disposed in the element forming region and that is electrically connected to a power line and the first electrode via the first transistor in each of the plurality of unit circuits, the current supply line supplying the current to the light-emitting element, wherein the plurality of dummy unit circuits are connected to the current supply line.