DISPLAY DEVICE AND ELECTRONIC DEVICE INCLUDING THE SAME

A display device and an electronic device including the same are disclosed. The display device includes a pixel defining film on a substrate, the pixel defining film having an opening in which a light emitting element is disposed; a capping layer on the common electrode of the light emitting element; an auxiliary layer on the capping layer and including bismuth; a thin film encapsulation layer including first to third encapsulation layers; a light blocking layer disposed on the thin film encapsulation layer, the light blocking layer having an open hole overlapping the opening; and an anti-reflection layer on the light blocking layer. The first encapsulation layer includes first to third inorganic insulating layers including silicon oxynitride. The capping layer and the first to third inorganic insulating layers have different thicknesses or refractive indexes from each other. A first opening interval between the first opening and a first opening hole overlapping the first opening is larger than a second openi