Morgan, Lewis & Bockius LLP
Organic light emitting display device
An organic light emitting display device is disclosed. The organic light emitting display device comprises at least two light emitting parts between an anode and a cathode, each of the light emitting parts having a light emitting layer and an electron transport layer, charge generation layers between the at least two light emitting parts, wherein at least one among the electron transport layers in the at least two light emitting parts includes a pyrimidine derivative at both sides of the core so as to reduce a driving voltage and increase an efficiency of the organic light emitting display device.
LG Display Co., Ltd.
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Jeongdae Hyeseung Min Seonkeun Hyoseok SungHoon
Seo Kang Yun Yoo Kim Joo