Patent ID: 8193699

Claim:
A display unit comprising: a plurality of organic light emitting devices over a flat substrate with a flat face defining a major surface, each of the plurality of organic light emitting devices having (a) a first electrode, (b) an insulating film having an aperture exposing the first electrode, (c) an organic layer at least on the first electrode in the aperture, the organic layer having a plurality of layers including a light emitting layer, and (d) a second electrode on the organic layer in the aperture, wherein, the aperture in the insulating film has (i) a planar shape having a plurality of sides, (ii) a first taper portion tapered with a first tilt angle, the first tilt angle defined by a first side face portion of the aperture and the flat face of the substrate, and (iii) a second taper portion tapered with a second tilt angle that is smaller and more acute than the first tilt angle, the second tilt angle defined by a second side face portion of the aperture and the flat face of the substrate, the plurality of sides of the aperture including sides having only the first taper portion formed therein and at least one other side having the second taper portion formed therein, the first taper portion provided so as to decrease a leakage current through the organic layer and the second taper portion provided so as to prevent a non-conduction of the second electrode.