A display device including a transparent substrate having a first surface and a second surface; a first electrode that is transparent and formed the first surface of the substrate; a light emitting layer formed on the first electrode; a second electrode formed on the light emitting layer; and a lens formed on the second surface of the substrate. The display device further includes a reflective plate formed between the first surface of the substrate and the first electrode or between the second surface of the substrate and the lens and including a plurality of thin films.