Patent ID: 8518556
Filing Date: 2013-08-27
Classification: H01L,Y10T

Abstract:
1. An organic electroluminescence element emitting white light, comprising: light emission layers consisting of: a blue light emission layer; a green light emission layer; a red light emission layer; wherein at least one emission layer of the green light emission layer and the red light emission layer, contains two or more emission dopants producing different emission colors; a content of all of the two or more emission dopants in the at least one emission layer is 5% or more by volume based on a volume of the at least one emission layer; one emission dopant of the two or more emission dopants in the at least one emission layer, emits light of a main emission color among all of the two or more emission dopants, and the emission dopant emitting light of a main emission color is an emission dopant that has a photon number which is at least 60% based on the total photon number for all the dopants in the at least one emission layer; a content of the one emission dopant emitting light of a main emission color in the at least one emission layer is not more than 2% by volume based on a volume of the at least one emission layer; and a peak wavelength of an emission spectrum of the one emission dopant emitting light of a main emission color is longer than that of all of the other of the two or more emission dopants in the at least one emission layer.