DISPLAY DEVICE

A display device includes a substrate including a plurality of sub-pixels; and a plurality of light emitting units provided on the substrate, the plurality of light emitting units respectively corresponding to the plurality of sub-pixels. The plurality of sub-pixels comprises a first sub-pixel corresponding to light of a first color, a second sub-pixel corresponding to light of a second color different from the first color, a third sub-pixel corresponding to light of a third color different from the first color and the second color, and a fourth sub-pixel corresponding to light of a fourth color having a wavelength band wider than those of the first color, the second color, and the third color. One light emitting unit of the plurality of light emitting units comprises a light emitting element and a light adjustment layer covering the light emitting element.