Patent ID: 8120246

Claim:
A method for making a display device having a pixel region including a plurality of pixels each of which has an organic light emitting device provided on a substrate, the method comprising the steps of: a first step of forming a first insulating film on the substrate; a second step of (1) forming on the first insulating film in the pixel region, a plurality of lower electrodes respectively corresponding to each of the pixels, (2) forming a conductive film on the first insulating film outside the pixel region, and (3) making a plurality of rectangular holes at substantially even intervals over the entire area of the conductive film which extend through the conductive film to expose the surface of the first insulating film; a third step of baking the substrate on which the lower electrode and the conductive film are provided so that moisture contained in the first insulating film is released and eliminated from the first insulating film through the plurality of holes, wherein, the conductive film surrounds the pixel region in plan view and is connected to an upper electrode to create an auxiliary wiring.