McKenna Long & Aldridge LLP
Organic light emitting display device
Disclosed is an organic light emitting display (OLED) device that may include first and second electrodes facing each other on a substrate, at least two light emitting units between the first and second electrodes, and a charge generation layer between the at least two light emitting units, the charge generation layer including an N-type charge generation layer and a P-type charge generation layer, wherein the N-type charge generation layer includes at least two hosts and a dopant, and wherein the at least two hosts have different lowest unoccupied molecular orbital (LUMO) energy levels.
LG DISPLAY CO., LTD.
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Jung-Soo Hye-Seung Young-Kwan Tae-Il Hyung-June
Park Kang Jung Kum Kim