Patent ID: 7030555

Claim:
An organic electroluminescence device comprising at least one organic layer and a pair of electrodes, said organic layer including an emitting layer being sandwiched between said pair of electrodes, said pair of electrodes being provided as a reflective electrode and a transparent electrode respectively, said organic electroluminescence device being formed to satisfy the expression (1): B 0 <B θ in which B 0 is a normal luminance intensity of luminescence radiated from a light extraction surface to an observer side, and B θ is a luminance intensity of said luminescence at an angle of 50° to 70°, wherein a region for disturbing an angle of reflection/refraction of light is provided in an optical path in which the luminescence is output from said emitting layer to the observer side through said transparent electrode; at least one kind of luminescent material is contained in said region or between said region and said emitting layer so that said luminescent material generates fluorescence or phosphorescence when said luminescent material absorbs the luminescence radiated from said emitting layer as an excitation light source.