Thin film electroluminescent element
AssigneeNippon Soken, Inc.
InventorsSeizi Huzino, Shinya Mizuki, Masumi Arai, Tadashi Hattori
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Abstract
A thin film electroluminescent element has a substrate, a transparent electrode formed on the substrate, a luminescent film wherein two kinds of luminescent centers are distributed in layers within a basic luminescent material, formed on the transparent electrode through an insulating film, and a back electrode formed on the luminescent film through another insulating film. The luminescent film of this thin film electroluminescent element can emit white light of excellent tone, including lights of three primary colors with sufficiently large luminous intensity.
Claims10
A thin film electroluminescent element comprising:
- a substrate;
- two electrode films, one of said two electrode films being a transparent electrode film formed on a first surface of said substrate and being made of a transparent material;
- and
- a luminescent film formed between said two electrode films for emitting white light through said transparent electrode film upon the application of an electric field between said two electrode films, said luminescent film including three contiguous layers, one layer being formed of a basic material having no luminescent center that is interposed between the other two luminescent layers formed of said basic material and having different luminescent centers.
Dependencies are inferred from the claim text.