Lg Display Co., Ltd.

Sung-Ji Yoon

Kwan-Soo Kim

Jin-Ho Park

Dong-Hyeok Lim

Heui-Dong Lee

Dae-Gwon Song

Disclosed is a light emitting display device which may block lateral leakage current. The light emitting display device includes electrode patterns arranged under a bank between adjacent subpixels so as to form a vertical channel, the bank covered by the electrode patterns functions as a gate insulating film and thus dielectric polarization occurs therein, and charges move from a common layer having high hole mobility to a common layer having low hole mobility, thereby being capable of preventing lateral leakage current.

Light emitting display device

Disclosed herein are an organic light emitting display device includes first to third sub-pixels realizing different colors, wherein each of the first to third sub-pixels includes first and second electrodes disposed on a substrate so as to face each other, an emission layer formed between the first and second electrodes, a multi-layered hole transporting layer formed between the first electrode and the emission layer to be in contact with the first electrode and the emission layer, and an electron transporting layer formed between the second electrode and the emission layer, wherein multi-layered hole transporting layer of at least one of the first to third sub-pixels includes an at least two-layered first hole transporting layer formed of a hole host and a p-type dopant having a doping concentration of 1 to 10% and a second hole transporting layer formed of the hole host.

Growing community of inventors

Paju-si, South Korea

Sung-Ji Yoon