Patent ID: 8471463

Claim:
An organic EL element, comprising: a first electrode comprising a light-reflective metal; a second electrode comprising a light-transmissive metal; an organic compound layer including at least a light-emitting layer located between the first electrode and the second electrode; and a first low-refractive-index layer being placed between the first electrode and the light-emitting layer, wherein an optical distance L between the first electrode and the second electrode satisfies the following Expression (I), (λ/4)×(−1−(φ/π))< L <(λ/4)×(1−(φ/π)) (I) where λ represents a maximum peak wavelength of a spectrum of light emitted by the organic EL element, and φ represents a sum of phase shifts at a time when light having the wavelength λ is reflected by the first electrode and the second electrode and satisfies φ<0 [rad]; and a refractive index of the first low-refractive-index layer is 1.20 or more and 1.65 or less at a maximum peak wavelength of a spectrum of light emitted by the organic EL element.