To provide a high-luminance organic EL display element, capable of enhancing the efficiency of emitted light to the outside.

In the organic EL display element where a light-emitting part which includes at least a support substrate and an organic EL layer comprising at least a first electrode, an organic EL layer and a second electrode is stuck to a color conversion filter substrate comprising at least a transparent substrate, a color conversion layer, and a passivation film, so as to face to each other, the surface opposite to the color conversion layer of the transparent substrate is provided with a plurality of protrusions in the shape of a right circular cone, in an array form.