A method of manufacturing a display device including first electrodes provided for respective pixels, an insulating layer having openings respectively opposed to the first electrodes, an organic layer including a light emitting layer common to all the pixels, and a second electrode formed over an entire surface of the organic layer laminated on a first substrate, includes a step of forming an auxiliary wiring made of a metallic material layer by irradiating the metallic material layer with energy rays from a side of the metallic material layer and selectively removing the metallic material layer by energy absorbed by a part corresponding to the pixel after the metallic material layer has been formed on an entire surface of the second electrode.