Patent ID: 8648338

Claim:
A light emitting device comprising: a first wiring; a second wiring; a first transistor; a second transistor; an insulating film over the second transistor; a first electrode over the insulating film; an organic compound layer over the first electrode; a second electrode over the organic compound layer; a silicon nitride film over the second electrode; and an organic resin over the second electrode; wherein the first wiring is connected to a gate of the first transistor, wherein the second wiring is connected to one of a source and a drain of the second transistor, wherein one of a source and a drain of the first transistor is connected to a gate of the second transistor, wherein a channel width of the second transistor is smaller than a channel length of the second transistor, wherein the second transistor comprises a polysilicon film, wherein the second transistor is an n-channel type transistor, and wherein the first wiring is parallel to the second wiring.