Light emitting device and organic electroluminescence display device
Abstract:
A light emitting device includes a pixel electrode, an organic layer, and a counter electrode, wherein the organic layer includes a first organic layer having a hole injecting property, a second organic layer having a hole transporting property, a third organic layer having an electron blocking property, a light emitting layer containing a host material and a dopant material, a fourth organic layer having a hole blocking property, and a fifth organic layer having an electron transporting property, wherein the fifth organic layer includes an alkali metal such as calcium or lithium and the like or an alkaline earth metal, and a total layer thickness of the first organic layer, the second organic layer, and the third organic layer is smaller than a total layer thickness of the fourth organic layer and the fifth organic layer.
Information query
Patent Agency Ranking
0/0