公开(公告)号：US11659736B2

公开(公告)日：2023-05-23

申请号：US17129481

申请日：2020-12-21

Applicant: LG Display Co., Ltd.

Inventor： Sung-Ji Yoon

IPC: H01L27/32

CPC classification number: H01L27/3248 ,  H01L27/3246

Abstract: 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.

公开(公告)号：US09385345B2

公开(公告)日：2016-07-05

申请号：US14134119

申请日：2013-12-19

Applicant: LG Display Co., Ltd.

Inventor： Heui-Dong Lee ,  Kwan-Soo Kim ,  Dae-Gwon Song ,  Jin-Ho Park ,  Sung-Ji Yoon ,  Dong-Hyeok Lim

IPC: H01L51/00 ,  H01L51/56 ,  H01L51/50 ,  H01L27/32

CPC classification number: H01L51/56 ,  H01L27/3211 ,  H01L51/506 ,  H01L51/5064

Abstract: 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.

Abstract translation: 本文公开了一种有机发光显示装置，包括实现不同颜色的第一至第三子像素，其中第一至第三子像素中的每一个包括设置在基板上以彼此面对的第一和第二电极，形成的发射层 在第一和第二电极之间，形成在第一电极和发射层之间的与第一电极和发射层接触的多层空穴传输层，以及形成在第二电极和发射层之间的电子传输层 其中，所述第一至第三子像素中的至少一个的多层空穴传输层包括由空穴宿主形成的至少两层的第一空穴传输层和掺杂浓度为1〜10的p型掺杂剂 ％和由孔主体形成的第二空穴传输层。