Electroluminescence device

摘要

A bottom emission type electroluminescence device for emitting an increased amount of light rays in a direction that is within a predetermined angle relative to a light incidence surface of a transparent substrate. The transparent substrate (2) is sandwiched between an electroluminescence element (3) and a transparent layer (1). The refractive index of the transparent layer is greater than that of the transparent substrate. A plurality of projections and recesses are formed on the upper surface (1b) of the transparent layer.