公开(公告)号：US11667647B2

公开(公告)日：2023-06-06

申请号：US16712159

申请日：2019-12-12

Applicant: LG Display Co., Ltd. ,  Soulbrain Co., Ltd.

Inventor： Suk-Young Bae ,  Tae-Ryang Hong ,  Jun-Yun Kim ,  Jin-Hee Kim ,  Ah-Rang Lee

IPC: C07D491/10 ,  C07D491/107 ,  C07D495/10 ,  H01L51/00 ,  H01L51/50

CPC classification number: C07D491/107 ,  C07D495/10 ,  H01L51/0054 ,  H01L51/0067 ,  H01L51/0072 ,  H01L51/0073 ,  H01L51/0074 ,  H01L51/5004

Abstract: The disclosure provides a delayed fluorescent compound of the Formula




and an organic light emitting diode including a first electrode, a second electrode and an organic emitting layer between the first and second electrodes, where the delayed fluorescent compound is included in the organic emitting layer, and an organic light emitting display device including the organic emitting layer.

公开(公告)号：US11557731B2

公开(公告)日：2023-01-17

申请号：US16728273

申请日：2019-12-27

Applicant: LG Display Co., Ltd. ,  Soulbrain Co., Ltd.

Inventor： Hyong-Jong Choi ,  Tae-Ryang Hong ,  Jun-Yun Kim ,  Jin Hee Kim ,  Ah-Rang Lee

IPC: H01L51/00 ,  C09K11/06 ,  H01L27/32 ,  H01L51/50

Abstract: The present disclosure provides an organic light emitting diode comprising a first electrode; a second electrode facing the first electrode; and an emitting material layer. The emitting material layer includes a p-type host, a n-type host and a phosphorescent dopant and positioned between the first electrode and the second electrode, wherein a first energy level of a HOMO of the p-type host is equal to or lower than a second energy level of a HOMO of the n-type host, and a difference between an energy level of a singlet state of the n-type host and an energy level of a triplet state of the n-type host is greater than 0.3 eV and smaller than 0.5 eV.