Seed IP Law Group LLP
Organic light emitting display device
An organic light emitting display device includes a first electrode and a second electrode disposed on a substrate opposite to each other, a first stack including a hole injection layer, a first hole transport layer, a first light emitting layer, and a first electron transport layer sequentially stacked on the first electrode, a second stack including a second hole transport layer, a second light emitting layer, and a second electron transport layer sequentially stacked between the first stack and the second electrode, and a charge generation layer disposed between the first stack and the second stack and including an N-type charge generation layer and a P-type charge generation layer to control charge balance between the first and second stacks. The P-type charge generation layer is doped with 1% to 20% of a hole transport material based on a volume of the P-type charge generation layer.
LG Display Co., Ltd.
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Ki-Woog Sung-Hoon Youn-Seok Hong-Seok Chang-Wook Seok-Joon Jeong-Dae
Song Pieh Kam Choi Han Oh Seo