Patent ID: 7781962

Claim:
A light-emitting device comprising: a substrate; an organic electroluminescence device formed on the substrate; a transparent insulation layer formed directly on the organic electroluminescence device; a polarization separator formed directly on the transparent insulation layer; a phase plate formed on the polarization separator; and a polarizer formed on the phase plate, wherein the organic electroluminescence device comprises: a first electrode; a second electrode; and an organic emissive layer sandwiched by the first and second electrodes, wherein the second electrode is an optically transparent electrode formed on the organic emissive layer opposite side to the substrate; and wherein the polarization separator reflects a specific light among light traveling from an emissive layer side to a polarization separator side and transmits remaining light, the specific light has a wavelength range that is narrower than a light emission range of the emissive layer, and when converted into linear polarized light by the phase plate, the specific light includes a circular polarized light component to be absorbed by the polarizer, and the first electrode includes a reflective surface for reflecting circular polarized light impinging vertically on the reflective surface as a circular polarized light of which direction of rotation is reversed.