公开(公告)号：US11943998B2

公开(公告)日：2024-03-26

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: H01L51/50 ,  C09K11/06 ,  H10K85/30 ,  H10K85/60 ,  H10K50/11 ,  H10K50/12 ,  H10K50/13 ,  H10K101/10

CPC classification number: H10K85/322 ,  C09K11/06 ,  H10K85/622 ,  H10K85/631 ,  H10K85/633 ,  H10K85/654 ,  H10K85/6572 ,  C09K2211/1018 ,  H10K50/11 ,  H10K50/121 ,  H10K50/13 ,  H10K85/626 ,  H10K2101/10

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：US11968898B2

公开(公告)日：2024-04-23

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: H10K85/60 ,  H10K50/11 ,  H10K50/18 ,  H10K101/10 ,  H10K101/40

CPC classification number: H10K85/6574 ,  H10K85/622 ,  H10K85/631 ,  H10K85/6572 ,  H10K50/11 ,  H10K50/18 ,  H10K2101/10 ,  H10K2101/40

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.