Patent ID: 7038374

Claim:
A light emitting device comprising a plurality of light emitting elements over a substrate having an insulating surface, wherein each of the light emitting elements comprises: a first electrode; a first layer comprising an organic compound formed over the first electrode; a first carbon-based thin film formed over the first layer; a second layer comprising an organic compound formed over the first carbon-based thin film; a second carbon-based thin film over the second layer; a third layer comprising an organic compound formed over the second carbon-based thin film; a third carbon-based thin film over the third layer; a fourth layer comprising an organic compound formed over the third carbon-based thin layer; a fifth organic layer comprising an organic compound formed over the fourth layer; and a second electrode provided over the fifth layer comprising an organic layer, wherein the first carbon-based thin film and the second carbon-based thin film are in direct contact with the second layer, and wherein the second carbon-based thin film and the third carbon-based thin film are in direct contact with the third layer.