| abstract |
An organic light emitting diode device is disclosed. There is an organic light emitting diode device that comprises a first light emitting part between an anode and a cathode, the first light emitting part including a first light emitting layer, a second light emitting part comprising a second light emitting layer on the first light emitting part, and a first charge generation layer between the first light emitting part and the second light emitting part, wherein the first charge generation layer comprises at least two hosts, and at least one of the at least two hosts includes a pyrene compound. |