An organic EL panel 114 includes an anode 144, which is a transparent and conductive, a cathode 134, and an organic EL multilayer film 124 sandwiched between the anode 144 and the cathode 134, wherein the cathode 134 has an interface with the organic EL multilayer film 124, the interface comprising a black material. An organic EL display device includes such an organic EL element.