The present invention provides an electroluminescent display which can efficiently
radiate light emitted from an electroluminescent layer to a viewer side and, at
the same time, can reduce a deterioration in contrast of a displayed image caused
by external light. The electroluminescent display includes a light transparent
substrate and an electroluminescent layer provided on the light-transparent substrate.
The electroluminescent layer includes at least a transparent electrode, an organic
luminescent layer, and a cathode. Two or more regions with different refractive
indexes are provided within said light-transparent substrate.
