A display panel includes a thin film transistor layer (4), a grating layer (3), a transparent anode layer (2), an emission layer (1), and a colored layer (6) opposite the emission layer (1). The colored layer (6) may include a plurality of color filters. The grating layer (3) may be between the thin film transistor layer (4) and the transparent anode layer (2). The grating layer (3) may include a plurality of blazed gratings corresponding to the plurality of color filters, respectively.