Organic electroluminescence display device

An organic EL display device having a first subpixel region and a second subpixel region, comprising:

• a substrate;
• a first light emission film which is disposed on the substrate of the first subpixel region and emits first light;
• a second light emission film which is disposed on the substrate of the second subpixel region and emits second light whose wavelength is shorter than that of the first light;
• an upper electrode which is disposed on an upper layer side of the first light emission film and the second light emission film and has conductivity, light transmissivity, and light reflectivity at the same time;
• and
• a cap layer configured to include a high refractive index film, a middle refractive index film, and a low refractive index film whose refractive indices are different from one another on an upper layer side of the upper electrode, and the low refractive index film is disposed to be distant from the substrate more than the other films included in the cap layer are, in the first and second subpixel regions, wherein
• the middle refractive index film of the first subpixel region is formed to be thicker than the middle refractive index film of the second subpixel region.