Provided are a display device and a display unit having higher light extraction efficiency. An optical distance L.sub.1 between a maximum light-emitting position of a light-emitting layer and a first end portion satisfies L.sub.1=tL.sub.1+a.sub.1 and (2tL.sub.1)/.lamda.=-.PHI..sub.1/(2.pi.)+m.sub.1. An optical distance L.sub.2 between the maximum light-emitting position and a second end portion satisfies L.sub.2=tL.sub.2+a.sub.2 and (2tL.sub.2)/.lamda.=-.PHI..sub.2/(2.pi.)+m.sub.2. In the formulas, tL.sub.1 and tL.sub.2 represent a theoretical optical distance between the first end portion and the maximum light-emitting position and a theoretical optical distance between the second end portion and the maximum light-emitting position, respectively, a.sub.1 and a.sub.2 represent correction amounts based upon a light-emitting distribution in the light-emitting layer, .lamda. represents a peak wavelength of the spectrum of light desired to be extracted, .PHI..sub.1 and .PHI..sub.2 represent a phase shift of reflected light generated in the first end portion and a phase shift of reflected light generated in the second end portion, respectively, and each of m.sub.1 and m.sub.2 is 0 or an integer.