Patent ID: 8018149

Claim:
A light-emitting apparatus comprising: a substrate; a first light-emitting element over the substrate including: a first light-emitting layer interposed between a light-transmitting first electrode and a semi-transparent common electrode; and a first light-reflecting layer arranged on a first side of the first electrode and the first light-emitting layer arranged on a second side of the first electrode opposite to the first side of the first electrode, the first light-reflecting layer and the common electrode configuring an optical resonator structure that resonates a light emitted from the first light-emitting layer; and a second light-emitting element over the substrate including: a second light-emitting layer interposed between a light-transmitting second electrode and the semi-transparent common electrode; and a second light-reflecting layer arranged on a first side of the second electrode and the second light-emitting layer arranged on a second side of the second electrode opposite to the first side of the second electrode, the second light-reflecting layer and the common electrode configuring an optical resonator structure that resonates a light emitted from the second light-emitting layer, the first light-emitting element and the second light-emitting element having respectively different resonance wavelengths to be resonated in the optical resonator structure, an optical length (L) between the first light-reflecting layer and the common electrode in a direction of a normal line of the substrate satisfies the following relationship, L >λ( m−φ/ 2π)/2 Wherein, φ is a phase shift generated when the light emitted from the first light-emitting layer is reflected from the first electrode or the common electrode, λ is a peak wavelength of a spectrum of light which is to be extracted from among light emitted from the first light-emitting layer, and m is integer number, and an optical length (L′) between the second light-reflecting layer and the common electrode in the direction of the normal line of the substrate satisfies the following relationship, L′≅λ′(m−φ′/2π)/2 Wherein, φ′ is a phase shift generated when the light emitted from the second light-emitting layer is reflected from the second electrode or the common electrode, and λ′ is a peak wavelength of a spectrum of light which is to be extracted from among light emitted from the second light-emitting layer.