Patent ID: 7592193

Claim:
A method for manufacturing a light emitting device comprising: forming a thin film transistor over an insulating surface; forming an interlayer insulating film comprising an organic resin, over the thin film transistor; forming an insulating film comprising aluminum nitride, aluminum nitrided oxide, aluminum oxynitride, silicon nitride or silicon oxynitride on the interlayer insulating film; forming a conductive film on the insulating film; etching the conductive film to form a pixel electrode and a wiring, wherein the pixel electrode is electrically connected to one of a source region and a drain region of the thin film transistor, and the wiring is electrically connected to the other of the source region and the drain region of the thin film transistor; forming an insulating film covering at least one edge portion of the pixel electrode; forming a first electrode on at least the pixel electrode; forming an electron transporting layer including a first organic compound over at least the first electrode; forming a first mixture layer including the first organic compound and a second organic compound on the electron transporting layer; forming a blocking layer including the second organic compound on the first mixture layer; forming a second mixture layer including the second organic compound, a third organic compound and a complex including iridium on the blocking layer; forming a light emitting layer including the third organic compound and the complex on the second mixture layer; forming a third mixture layer including the third organic compound, the complex and a fourth organic compound on the light emitting layer; forming a hole transporting layer including the fourth organic compound on the third mixture layer; forming a fourth mixture layer including the fourth organic compound and a fifth organic compound on the hole transporting layer; forming a hole injection layer including the fifth organic compound on the fourth mixture layer; after forming the hole injection layer, forming a mixture region by depositing the fifth organic compound and a metal simultaneously; after forming the mixture region, forming a protection film by depositing the metal; and forming a second electrode on at least the protection film by sputtering.