Patent ID: 8147287

Claim:
An organic EL element-manufacturing method for manufacturing an organic EL element which includes an anode electrode layer, a hole injection layer arranged on the anode electrode layer, a light-emitting layer arranged on the hole injection layer, an electron transport layer arranged on the light-emitting layer, an electron injection layer arranged on the electron transport layer, and a cathode electrode layer arranged on the electron injection layer, wherein when a voltage is applied between the anode electrode layer and the cathode electrode layer and holes and electrons are injected into the light-emitting layer from the hole injection layer and the electron injection layer, the light-emitting layer emits light and a luminescent light is emitted outside, the organic EL element-manufacturing method, comprising: a step of forming the electron injection layer on a surface of which upper portions of electron injection particles are exposed by emitting a vapor of a matrix organic material having an electron transport property and a vapor of an electron injection material in a vacuum atmosphere, bringing the vapors on a surface of the electron transport layer and dispersing the particles of the electron injection material in the matrix organic material; and a sputtering step of forming the cathode electrode layer in contact with the electron injection layer by sputtering, wherein lower portions of the electron injection particles are implanted in the matrix organic material so that, even if the cathode electrode layer is formed in the sputtering step, the electron injection particles do not peel.