There is provided a display device excellent in resolution balance when a plurality of perspective pictures is used for stereoscopic display. The display device includes a display section including a plurality of sub-pixels, and displaying a plurality of perspective pictures in a screen, and an optical separation element optically separating the perspective pictures displayed on the display section. The sub-pixels are each with, in a planar view, a size in a long-side direction being less than three times a size in a short-side direction.