Patent ID: 8415658

Claim:
An organic electroluminescence device comprising: a first electrode; an organic layer formed on the first electrode and including a light-emitting layer; an intermediate layer formed on the organic layer; and a second electrode formed on the intermediate layer and having a thickness of 6 nm or less; and wherein the organic layer includes an electron hole injection layer, an electron hole transport layer, the light-emitting layer, an electron transport layer, and an electron injection layer that are layered in that order from a first electrode side; wherein the organic layer between the first electrode and the second electrode constitutes a first resonator structure, the interface between the first electrode and the organic layer is a first reflecting face, the interface between the intermediate layer and the electron injection layer is a second reflecting face, and wherein light generated in the light emitting layer is resonated in the first resonator structure and is extracted from a second reflecting face side; wherein an optical distance between the first reflecting face and the second reflecting face satisfies Mathematical formula 1: (2 L 1)/λ+Φ)/(2π)= m wherein L 1 represents the optical distance between the first reflecting face and the second reflecting face, wherein m represents zero or a natural number, wherein Φ represents a sum of a phase shift Φ 1 of reflected light generated in the first reflecting face, and a phase shift Φ 2 of reflected light generated in the second reflecting face, and wherein λ represents a peak wavelength of a spectrum of light that is extracted from the second reflecting face side; further comprising a resonance adjustment layer formed on the second electrode, and a protective layer formed on the resonance adjustment layer; wherein the organic layer, the intermediate layer, the second electrode, and the resonance adjustment layer constitute a second resonator structure, wherein an interface between the resonance adjustment layer and the protective layer is a third reflecting face, wherein light extracted from the first resonator structure is resonated between the first reflecting face and the third reflecting face by the second resonator structure, and wherein the light extracted from the first resonator structure is resonated and extracted from a third reflecting face side.