The organic electroluminescent element

The present invention is a multi-wavelength emission type organic electroluminescent device, an organic layer having at least one layer comprising a plurality of light-emitting material between the cathode, anode and the cathode and the anode, said plurality of light emitting material emit light, and which is the shortest wavelength of light emission from the luminescent material comprises a delayed fluorescence way design. Thus, possible to provide a short wavelength can be increased to improve the tone emission efficiency, and greater freedom of design and construction may be simple multiwavelength emission type organic electroluminescence element.