A display device and a method for manufacturing the same are disclosed, in which a cathode electrode is not separated from an organic light emitting layer. The method for manufacturing a display device comprises the steps of forming pixels on a display area on a first substrate, forming an encapsulation film to cover the display area, attaching a protective film onto the encapsulation film, and removing the protective film. When attaching the protective film, the protective film includes a substrate layer and an adhesive layer formed at an edge area of at least one side of the substrate layer.