PURPOSE: To provide desired luminescence without exciting a light emitting layer doped with an organic pigment by exciting a PL light emitting film, and emitting the visible light having the wavelength corresponding to the doped organic pigment.

CONSTITUTION: A Schottky junction exists on the boundary face between an ITO electrode 23 and a ZnO film 24. When a forward bias is applied to this junction, ultraviolet rays are generated in a depletion layer extended on the ZnO side near the junction. The ultraviolet rays transmit a glass substrate 21 and excite a PL light emitting layer 22. Green visible light is emitted from the light emitting layer 22. When the PL light emitting layer 22 is excited by ultraviolet rays, the deterioration by Joule's heat is avoided, and a longer life can be obtained.