White-light-emitting apparatus including plurality of organic electroluminescent elements

A light-emitting apparatus comprising:

• a plurality of types of light-emitting pixels, each of the light-emitting pixels including a reflective electrode, an electrode-protective layer, an organic compound layer containing a light-emitting layer, and a light-output electrode in this order and having a resonator structure between the reflective electrode and the light-output electrode,
• wherein at least one type of the plurality of types of light-emitting pixels is a light-emitting pixel having a greater resonator structure interference order than other types of light-emitting pixels,
• the electrode-protective layer of the light-emitting pixel having the greater interference order has a greater layer thickness than the electrode-protective layers of the other types of light-emitting pixels,
• each of the plurality of types of light-emitting pixels includes a color filter,
• the organic compound layer is a layer that includes a first light-emitting layer containing a blue-light-emitting material and a second light-emitting layer and that emits white light by using the first light-emitting layer and the second light-emitting layer,
• the optical distance between the first light-emitting layer and the reflective electrode satisfies formula (1) below, and the optical distance between the second light-emitting layer and the reflective electrode satisfies formula (2) below,
• (λb/8)×(3−(2ϕb/π))<Lb<(λb/8)×(5−(2ϕb/π)) (1)
• in formula (1), λb represents a peak wavelength of light emission of the first light-emitting layer, and ϕb (<0) [rad] represents the phase shift of light with a wavelength of λb at the reflective electrode,
• (λg/8)×(−1−(2ϕg/π))<Lg<(λg/8)×(1−(2ϕg/π)) (2)
• in formula (2), λg represents a peak wavelength of light emission of the second light-emitting layer, and ϕg (<0) [rad] represents the phase shift of light with a wavelength of λg at the reflective electrode.

A light-emitting apparatus comprising:

• a plurality of types of light-emitting pixels, each of the light-emitting pixels including a reflective electrode, an electrode-protective layer, an organic compound layer containing a light-emitting layer, and a light-output electrode in this order and having a resonator structure between the reflective electrode and the light-output electrode,
• wherein at least one type of the plurality of types of light-emitting pixels is a light-emitting pixel having a greater resonator structure interference order than other types of light-emitting pixels,
• the electrode-protective layer of the light-emitting pixel having the greater interference order has a greater layer thickness than the electrode-protective layers of the other types of light-emitting pixels,
• each of the plurality of types of light-emitting pixels includes a color filter,
• the organic compound layer is a layer that includes a first light-emitting layer containing a blue-light-emitting material and a second light-emitting layer and that emits white light by using the first light-emitting layer and the second light-emitting layer, and
• when the peak wavelength of light emission of the first light-emitting layer is denoted as λ1 and the peak wavelength of light emission of the second light-emitting layer is denoted as λ2,
• the optical distance between the first light-emitting layer and the reflective electrode is 3λ1/4±λ1/8, and the optical distance between the second light-emitting layer and the reflective electrode is λ2/4±λ2/8.