Patent ID: 8482195

Claim:
A display apparatus comprising: a plurality of organic electroluminescent elements including an organic electroluminescent element that emits light of blue color, and organic electroluminescent element that emits light of green color, and an organic electroluminescent element that emits light of red color, each of the plurality of organic electroluminescent elements including a first electrode, an organic compound layer including a light-emitting layer and a second electrode; a protective layer covering the plurality of organic electroluminescent elements; a first optical adjustment layer disposed between the second electrode and the protective layer and disposed in contact with the second electrode; and a second optical adjustment layer disposed between the second electrode and the protective layer and disposed in contact with the first optical adjustment layer, wherein light emitted by each of the organic electroluminescent elements is emitted from the second electrode side, wherein the second electrode is a metal electrode, wherein the first optical adjustment layer and the second optical adjustment layer have refractive indices that are different from each other, extend over the plurality of organic electroluminescent elements, and each have a thickness that is uniform, the thicknesses being determined so that, for light that is emitted by the light-emitting layer of the organic electroluminescent element that emits light of blue color, a phase of the light when the light is reflected by an interface between the second electrode and the first optical adjustment layer, a phase of the light when the light is reflected by an interface between the first optical adjustment layer and the second optical adjustment layer, and a phase of the light when the light is reflected by an interface on the protective layer side of the second optical adjustment layer are the same, wherein the thickness d 1 of the first optical adjustment layer satisfies (4 m 1 −2φ 1 /π−1)λ/(8 n 1 )< d 1 <(4 m 1 −2φ 1 /π+1)λ/(8 n 1 ), where λ is a maximum peak wavelength of a spectrum of light that is emitted from the organic electroluminescent element that emits light of blue color, n 1 is the refractive index of the first optical adjustment layer at the maximum peak wavelength λ, φ 1 is a phase shift amount when the light that is emitted from the organic electroluminescent element that emits light of blue color is reflected by the interface between the first optical adjustment layer and the second optical adjustment layer, and m 1 is a natural number, and wherein the thickness d 2 of the second optical adjustment layer satisfies (4 m 2 −1)λ/(8 n 2 )< d 2 <(4 m 2 +1)λ/(8 n 2 ), where λ is the maximum peak wavelength, n 2 is the refractive index of the second optical adjustment layer at the maximum peak wavelength λ, and m 2 is a natural number.