Patent ID: 8253131

Claim:
An organic EL display panel including pixels, each of the pixels corresponding to one of a plurality of colors, the organic EL display panel comprising: a thin film transistor layer; an interlayer insulation film on the thin film transistor layer and including a plurality of contact holes, each of the plurality of contact holes corresponding to one of the pixels; a plurality of first electrodes formed on the interlayer insulation film, each being conductive with the thin film transistor layer via one of the plurality of contact holes and corresponding to one of the pixels; a bank being a grid and defining a plurality of apertures, at least one of the plurality of apertures corresponding to each of the plurality of colors, at least one of the plurality of contact holes beneath each of the plurality of apertures; a first organic light-emitting layer disposed in each of the plurality of apertures that corresponds to at least one of the pixels of a first color of the plurality of colors; a second organic light-emitting layer disposed in each of the plurality of apertures that corresponds to at least one of the pixels of a second color of the plurality of colors; and a second electrode formed above the first organic light-emitting layer and the second organic light-emitting layer, wherein in each of the plurality of apertures in which the first organic light-emitting layer is disposed, a first contact hole region is above each of the plurality of contact holes, in each of the plurality of apertures in which the second organic light-emitting layer is disposed, a second contact hole region is above each of the plurality of contact holes, and a first-material layer comprising a material the same as a material of the first organic light-emitting layer and a second-material layer comprising a material the same as a material of the second organic light-emitting layer are superimposed in the first contact hole region and the second contact hole region.