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.

公开(公告)号：US11420979B2

公开(公告)日：2022-08-23

申请号：US16726536

申请日：2019-12-24

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

Inventor： Ik-Rang Choe ,  Tae-Ryang Hong ,  Jun-Yun Kim ,  Jin Hee Kim ,  Eun Chul Shin

IPC: H01L51/00 ,  C07D495/10 ,  C07D491/107 ,  C07D401/10 ,  C07F7/08 ,  C07D471/14 ,  C07D405/14 ,  C07D471/10 ,  H01L51/50

Abstract: Disclosed is an organic compound that includes a fused hetero aromatic moiety of a spiro structure as an electron donor and a triazine moiety as an electron acceptor that is linked to the electron donor via an arylene linker substituted with at least one electron withdrawing group, an organic light emitting diode and an organic light emitting device each of which applies the organic compound into at least one emitting unit. The organic compound enables the organic light emitting diode to increase its luminous efficiency and to improve its color purity.

公开(公告)号：US11655219B2

公开(公告)日：2023-05-23

申请号：US17103469

申请日：2020-11-24

Applicant: LG DISPLAY CO., LTD. ,  Soulbrain Co., Ltd

Inventor： Jun-Yun Kim ,  Hyong-Jong Choi ,  Joong-Hwan Yang ,  Bo-Min Seo ,  Tae-Ryang Hong ,  Jin Hee Kim ,  Eun-Chul Shin

IPC: C07D253/08 ,  H01L51/00 ,  H01L51/50 ,  C09K11/06

CPC classification number: C07D253/08 ,  H01L51/0067 ,  H01L51/0071 ,  H01L51/0072 ,  C09K11/06 ,  C09K2211/1007 ,  C09K2211/1014 ,  C09K2211/1018 ,  H01L51/5012

Abstract: The present disclosure relates to an organic compound having the following structure of Chemical Formula 1, and an organic light emitting diode (OLED) and an organic light emitting device including the organic compound. The organic compound includes a triazine moiety of an electron acceptor and a fused hetero aromatic moiety of an electron donor separated from the triazine moiety. The organic compound includes the electron acceptor moiety and the electron donor moiety in a single molecule, thus charges can be moved in the molecule. Also, since the organic compound includes the rigid fused hetero aromatic ring, three dimensional conformation of the organic compound is limited, and therefore the compound may have excellent luminous efficiency and color purity.