Organic light-emitting device and display apparatus

A display apparatus comprising a plurality of pixels each comprising an organic light-emitting device disposed on a substrate, each of the organic light-emitting devices comprising:

• a first electrode;
• an emission layer;
• and
• a second electrode provided in the mentioned order from the substrate side, an optical path between a first reflective surface located on the first electrode side with respect to the emission layer and a second reflective surface located on the second electrode side with respect to the emission layer being set so as to resonate light emitted in the emission layer, and having a first pixel in which the optical path is relatively short and is L1 and a second pixel in which the optical path is relatively long and is L2,
• wherein L1 and L2 are set so as to satisfy Expression 2 with resonant wavelengths λ1, λ2, and λ3, a sum φt of phase shifts when light is reflected by the first reflective surface and the second reflective surface, and a viewing angle α:
• λ1=2L1/(p−φt/2π)
• λ2=2L2/(q+1−φt/2π)
• λ3=2L2 cos α/(q−φt/2π)
• λ1=λ2=λ3 (Expression 2)
• wherein p and q each independently represent a positive integer and α is not 0°.