Patent ID: 8471461
Filing Date: 2013-06-25
Classification: H01L,H05B

Abstract:
1. An organic electroluminescent element, comprising: an anode; a cathode; an organic luminescent layer that is positioned between the anode and cathode and that includes at least two types of host materials and a dopant, the organic luminescent layer including regions that respectively illuminate lights in red (R), green (G), and blue (B); and at least one of a hole inhibition layer and an electron transport layer that is provided in order between the organic luminescent layer and the cathode, and that contiguously covers two or more regions among a R region, a G region, and a B region of the organic luminescent layer, wherein energy values of LUMO (Lowest Unoccupied Molecular Orbital) for the host materials are identical or substantially identical to each other, energy values of HOMO (Highest Occupied Molecular Orbital) for the host materials are different, the dopant is a luminescent compound, and at least one of the hole inhibition layer and the electron transport layer that contiguously covers the two or more regions is formed by at least one of the same impurity type and the same layer thickness of a structuring material in the two or more regions, wherein the at least one of a hole inhibition layer and an electron transport layer that is provided in order between the organic luminescent layer and the cathode, contiguously covers only two regions among a R region, a G region, and a B region of the organic luminescent layer.