Patent ID: 9224969
Filing Date: 2015-12-29
Classification: H01L

Abstract:
1. An organic light-emitting diode comprising: a first electrode; a second electrode facing the first electrode; an emission layer between the first electrode and the second electrode; a first hole transport layer comprising a first hole transporting compound; a second hole transport layer comprising a second hole transporting compound, the first hole transport layer and the second hole transport layer being interposed between the first electrode and the emission layer; an electron transport layer between the emission layer and the second electrode; a first mixing layer between the first electrode and the first hole transport layer, contacting the first hole transport layer, and comprising the first hole transporting compound and a first cyano group-containing compound; and a second mixing layer between the first electrode and the second hole transport layer, contacting the second hole transport layer, and comprising the second hole transporting compound and a second cyano group-containing compound.