Patent ID: 8680542

Claim:
An organic light-emitting element, comprising: a first electrode that reflects incident light; a second electrode, disposed to face the first electrode, that transmits incident light; an organic light-emitting layer, disposed between the first electrode and the second electrode, that emits blue light; a first functional layer disposed between the first electrode and the organic light-emitting layer and composed of one or more layers; and a second functional layer disposed between the organic light-emitting layer and the second electrode and composed of one or more layers; and a coating layer disposed to coat the second electrode and composed of one or more layers, wherein a portion of the blue light emitted from the organic light-emitting layer travels a first optical path by passing through the first functional layer, striking and being reflected by the first electrode, and then being emitted externally after passing through the first functional layer, the organic light-emitting layer, the second functional layer, the second electrode, and the coating layer, a remaining portion of the blue light emitted from the organic light-emitting layer travels a second optical path by travelling through the second functional layer towards the second electrode, instead of towards the first electrode, and being emitted externally after passing through the second electrode and the coating layer, an optical thickness of the first functional layer is at most equal to 316 nm, a difference in refractive index between the second electrode and a layer adjacent to the second electrode among the one or more layers composing the second functional layer is from 0.1 to 0.7 inclusive, the second electrode has a physical thickness at most equal to 70 nm, a refractive index from 2.0 to 2.4 inclusive, and an optical thickness at most equal to 168 nm, and a difference in refractive index between the second electrode and a layer adjacent to the second electrode among the one or more layers composing the coating layer is from 0.1 to 0.7 inclusive.