Improved image quality is achieved with a display device.A display panel includes a panel substrate and a film. In the display panel, multiple light emitting elements are provided on the panel substrate. In the display panel, the film is a film made of a material having a predetermined refractive index, and a thickness depending on a viewing angle and the refractive index, the viewing angle being an angle of a field of view where a substrate end distance from a light emitting element that is closest to an end of the panel substrate among the light emitting elements to the end and brightness of the light satisfy predetermined criteria.