ORGANIC ELECTROLUMINESCENT DISPLAY DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an organic EL display device capable of improving the directivity of light entered into an optically-transparent insulation layer by a simple structure. SOLUTION: This organic electroluminescent display device is provided with the optically-transparent insulation layer, an organic electroluminescent element and a three-dimensional diffraction element. The organic electroluminescent element is provided with: a back electrode arranged on the back side with respect to the optically-transparent insulation layer; an optically-transparent front electrode interlaid between the optically-transparent insulation layer and the back electrode; and an organic matter layer interlaid between the front electrode and the back electrode and including a luminescent layer. The three-dimensional element has a double cross-sectional structure of specific dielectric constant modulation disposed on an optical path from a point where light emitted by the luminescent layer leaves an organic matter layer to a point where the light reaches the optically-transparent insulation layer. COPYRIGHT: (C)2006,JPO&NCIPI