公开(公告)号：US20210167289A1

公开(公告)日：2021-06-03

申请号：US17100611

申请日：2020-11-20

Applicant: LG Display Co., Ltd.

Inventor： Ik-Rang CHOE ,  Hye-Gun RYU ,  Jun-Yun KIM ,  Seong-Keun KIM ,  Ju-Young LEE

IPC: H01L51/00 ,  C09K11/06

Abstract: The present disclosure provides an organic light emitting diode including a first electrode; a second electrode facing the first electrode; and an emitting material layer including a first compound and a second compound positioned between the first and second electrodes, wherein the first compound includes a hexagonal-ring moiety including one boron atom, one oxygen atom and four carbon atoms, and the second compound includes a hexagonal-ring moiety including one boron atom, one nitrogen atom and four carbon atoms, and an organic light emitting device including the organic light emitting diode.

公开(公告)号：US20210126205A1

公开(公告)日：2021-04-29

申请号：US17077240

申请日：2020-10-22

Applicant: LG DISPLAY CO., LTD.

Inventor： Hye-Gun RYU ,  Ik-Rang CHOE ,  Jun-Yun KIM ,  Seong-Keun KIM ,  Ju-Young LEE

IPC: H01L51/00

Abstract: An organic light emitting diode (OLED) includes a first emitting material layer disposed adjacently to a first electrode and a second emitting material layer disposed adjacently to a second electrode. The first emitting material layer includes a first compound having high affinity to holes and a second compound of thermally activated delayed fluorescent material, and the second emitting material layer includes a fourth compound having high affinity to electrons and implementing triplet-triplet annihilation. Two emitting material layers having adjusted energy levels allow the OLED to lower its driving voltages and improve its luminous efficiency and luminous lifetime.