Patent ID: 8492184

Claim:
An organic EL display panel comprising: a TFT layer; an interlayer insulation film provided above the TFT layer; a first electrode plate group formed in a line on the interlayer insulation film and including a plurality of first electrode plates corresponding to a first color; a second electrode plate group formed in a line on the interlayer insulation film adjacent to the first electrode plate group and including a plurality of second electrode plates corresponding to a second color; a first bank along a longitudinal first edge of the first electrode plate group; a second bank between a longitudinal second edge of the first electrode plate group and a longitudinal first edge of the second electrode plate group; a third bank along a longitudinal second edge of the second electrode plate group; a first organic functional layer between the first bank and the second bank and above the first electrode plate group; a second organic functional layer between the second bank and the third bank and above the second electrode plate group; and a counter electrode disposed to cover both the first organic functional layer and the second organic functional layer, wherein the interlayer insulation film is provided with first contact holes, each connecting one of the first electrode plates with the TFT layer, and second contact holes, each connecting one of the second electrode plates with the TFT layer, each of the first electrode plates has a first concavity shaped in conformity with one of the first contact holes, and each of the second electrode plates has a second concavity shaped in conformity with one of the second contact holes, at least one of (i) all the first contact holes and (ii) all the second contact holes are shaped to become narrower in a stepwise manner, any of the first contact holes has a larger volume than any of the second contact holes, the volume of a portion of the first organic functional layer above any of the first electrode plates is equal to, or an approximation of, the volume of a portion of the second organic functional layer above any of the second electrode plates, and an amount of the first organic functional layer that has entered into the first concavity is larger than an amount of the second organic functional layer that has entered into the second concavity, so that a film thickness of the first organic functional layer in a region other than the first concavity in any of the first electrode plates is less than a film thickness of the second organic functional layer in a region other than the second concavity in any of the second electrode plates.