Patent ID: 9634293
Date: 2017-04-25
CPC Classifications: H01L

Claim:
1. A method of manufacturing an organic light emitting display (OLED) device, the method comprising: forming first electrodes on a substrate on which first to third light emitting portions are defined, respectively; forming a first stack on the first electrodes by forming a first light emitting layer to correspond to the first light emitting portion, a second light emitting layer to correspond to the second light emitting portion, and a third light emitting layer to correspond to the third light emitting portion; forming an N-type charge generation layer (CGL) on the first stack; forming a transition metal oxide layer on the N-type CGL, the transition metal oxide layer has a work function ranging from about 5.0 to 5.9 eV by plasma-treating the transition metal oxide layer with O2, N2, or argon (Ar), or a mixture gas thereof; forming a second stack on the transition metal oxide layer by forming a fourth light emitting layer to correspond to the first light emitting portion, a fifth light emitting layer to correspond to the second light emitting portion, and a sixth light emitting layer to correspond to the third light emitting portion; and forming a second electrode on the second stack.