Patent ID: 7830086

Claim:
A light emitting device including an organic light emitting layer disposed on a substrate and first and second electrodes between which said organic light emitting layer is disposed on said substrate, comprising: said first electrode formed on the side of said substrate of said organic light emitting layer; said second electrode being formed on the opposite side to said substrate of said organic light emitting layer; a buffer layer disposed between said second electrode and said organic light emitting layer and mainly made of oxide having a smaller quantity of oxygen generated in decomposition upon formation of said buffer layer than that of oxygen generated in decomposition upon formation of said second electrode; and a light scattering layer disposed on a light out-coupling side of said light emitting layer and having an average refractive index smaller than a refractive index of said light emitting layer, said second electrode layer, and said buffer layer, said substrate being made of metal, wherein a refractive index of said light emitting layer is not less than 1.7, and wherein the average refractive index of the light scattering layer is smaller than 1.5.