Organic light emitting diode and organic light emitting display apparatus having the same

摘要

An organic light emitting diode includes a hole injection layer, a hole transport layer, an optical compensation layer, an emission layer, an electron transport layer and an electron injection layer. The optical compensation layer is disposed on the hole transport layer and includes a phosphorescent host material. Thus, an electron barrier on an interface between the optical compensation layer and an emission layer may be reduced. Thus, the luminance efficiency in a low gray scale area may be decreased, and the stain and roll-off phenomenon in the low gray scale area may be improved.

主权项

1. An organic light emitting diode comprising:
a hole injection layer; a hole transport layer comprising an amine compound and disposed on the hole injection layer; an optical compensation layer disposed on the hole transport layer; an emission layer disposed on the optical compensation layer; an electron transport layer disposed on the emission layer; and an electron injection layer disposed on the electron transport layer, wherein the optical compensation layer is disposed between the hole transport layer and the emission layer and comprises a carbazole-based phosphorescent host material.