公开(公告)号：US20210210695A1

公开(公告)日：2021-07-08

申请号：US17074454

申请日：2020-10-19

Applicant: Samsung Display Co., Ltd.

Inventor： Ryuhei FURUE ,  Hirokazu KUWABARA ,  Nobutaka AKASHI

IPC: H01L51/00 ,  C07D487/14 ,  C09K11/06

Abstract: An organic electroluminescence device of an embodiment includes a first electrode, a second electrode, and a plurality of functional layers disposed between the first electrode and the second electrode, wherein at least one functional layer of the plurality of functional layers includes a polycyclic compound represented by Formula 1, thereby showing excellent light emitting efficiency in a short wavelength region:

公开(公告)号：US20190036034A1

公开(公告)日：2019-01-31

申请号：US15952630

申请日：2018-04-13

Applicant: Samsung Display Co., Ltd.

Inventor： Nobutaka AKASHI

IPC: H01L51/00 ,  C07D471/10 ,  C09K11/06 ,  C07D519/00 ,  C07F5/02 ,  C07F7/08 ,  C07F7/30

Abstract: Provided are a compound for thermally activated delayed fluorescence having a molecular aspect ratio of 1.5 or more, represented by the following Formula 1 and an organic electroluminescence device including the same in an emission layer. The organic electroluminescence device includes a first electrode, a hole transport region disposed on the first electrode, an emission layer disposed on the hole transport region, an electron transport region disposed on the emission layer, and a second electrode disposed on the electron transport region.

公开(公告)号：US20180287090A1

公开(公告)日：2018-10-04

申请号：US15838654

申请日：2017-12-12

Applicant: SAMSUNG DISPLAY CO., LTD. ,  KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION

Inventor： Shuri SATO ,  Nobutaka AKASHI ,  Takuma YASUDA ,  Jiyoung LEE

IPC: H01L51/50 ,  C07F9/6568 ,  C07F9/6571 ,  C07F9/53

Abstract: A phosphorus-containing compound and an organic electroluminescence device including the same, the phosphorus-containing compound being represented by the following Formula 1:

公开(公告)号：US20240343743A1

公开(公告)日：2024-10-17

申请号：US18439153

申请日：2024-02-12

Applicant: Samsung Display Co., Ltd.

Inventor： Nobutaka AKASHI

IPC: C07F5/02 ,  C09K11/06 ,  H10K50/12 ,  H10K50/15 ,  H10K50/16 ,  H10K85/30 ,  H10K85/60

CPC classification number: C07F5/02 ,  C09K11/06 ,  H10K50/12 ,  H10K50/15 ,  H10K50/16 ,  H10K85/342 ,  H10K85/658 ,  C09K2211/1022

Abstract: Embodiments provide a polycyclic compound and a light emitting element that includes the polycyclic compound. The light emitting element includes a first electrode, a second electrode facing to the first electrode, and at least one functional layer disposed between the first electrode and the second electrode, wherein the at least one functional layer includes the polycyclic compound. The polycyclic compound is represented by Formula 1, which is explained in the specification.

公开(公告)号：US20210376249A1

公开(公告)日：2021-12-02

申请号：US17186629

申请日：2021-02-26

Applicant: Samsung Display Co., Ltd.

Inventor： Nobutaka AKASHI ,  Hirokazu KUWABARA

IPC: H01L51/00 ,  H01L51/50

Abstract: An organic electroluminescence device of one or more embodiments includes a first electrode, a hole transport region disposed on the first electrode, an emission layer disposed on the hole transport region, an electron transport region disposed on the emission layer and a second electrode disposed on the electron transport region, wherein the emission layer includes a polycyclic compound represented by Formula 1, thereby showing high emission efficiency: wherein Y is O or S.

公开(公告)号：US20210273174A1

公开(公告)日：2021-09-02

申请号：US17089268

申请日：2020-11-04

Applicant: Samsung Display Co., LTD.

Inventor： Hirokazu KUWABARA ,  Nobutaka AKASHI ,  Ryuhei FURUE

IPC: H01L51/00 ,  C07F5/02 ,  C09K11/06

Abstract: An organic electroluminescence device having high light emission efficiency is provided, which includes a first electrode, a second electrode facing the first electrode, and an emission layer disposed between the first electrode and the second electrode. The emission layer includes a polycyclic compound represented by Formula 1:

公开(公告)号：US20200287138A1

公开(公告)日：2020-09-10

申请号：US16739698

申请日：2020-01-10

Applicant: Samsung Display Co., Ltd.

Inventor： Yuji SUZAKI ,  Akinori YAMATANI ,  Nobutaka AKASHI

IPC: H01L51/00 ,  C07F5/02 ,  C09K11/06

Abstract: An organic electroluminescence device having high luminous efficiency includes a first electrode, a hole transport region on the first electrode, an emission layer on the hole transport region, an electron transport region on the emission layer, and a second electrode on the electron transport region, wherein the emission layer includes a polycyclic compound represented by Formula 1.

公开(公告)号：US20190312210A1

公开(公告)日：2019-10-10

申请号：US16298942

申请日：2019-03-11

Applicant: Samsung Display Co., Ltd.

Inventor： Nobutaka AKASHI ,  Yuji SUZAKI

IPC: H01L51/00 ,  C07F5/02 ,  C07D519/00 ,  C07F7/08 ,  C09K11/06

Abstract: An organic electroluminescence device includes a first electrode, a hole transport region on the first electrode, an emission layer on the hole transport region, an electron transport region on the emission layer, and a second electrode on the electron transport region, wherein the emission layer includes a polycyclic compound represented by Formula 1. In Formula 1, X1 may be C, Si or Ge; and AC may be an electron acceptor.

公开(公告)号：US20190123287A1

公开(公告)日：2019-04-25

申请号：US16164650

申请日：2018-10-18

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Junta FUCHIWAKI ,  Nobutaka AKASHI

IPC: H01L51/00 ,  C07D471/04 ,  C09K11/06

Abstract: A polycyclic compound may be represented by Formula 1 below. The polycyclic compound may improve the light emitting efficiency of a blue light emitting region, and an organic electroluminescence device including the polycyclic compound may have improved blue light emission, high external quantum efficiency, and long life. The polycyclic compound may be used as a thermally activated delayed fluorescence material, which emits blue light, to improve the blue light emitting efficiency of the organic electroluminescence device.

公开(公告)号：US20180155617A1

公开(公告)日：2018-06-07

申请号：US15827078

申请日：2017-11-30

Applicant: Samsung Display Co., Ltd.

Inventor： Hiromi NAKANO ,  Nobutaka AKASHI

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

CPC classification number: C09K11/06 ,  C09K11/0844 ,  C09K11/0855 ,  C09K2211/1011 ,  C09K2211/1029 ,  C09K2211/1033 ,  C09K2211/1037 ,  H01L51/0052 ,  H01L51/0059 ,  H01L51/0061 ,  H01L51/0067 ,  H01L51/0072 ,  H01L51/0094 ,  H01L51/5012 ,  H01L51/5016 ,  H01L51/5056 ,  H01L2251/5307

Abstract: Provided are an aromatic compound enhancing emission efficiency of blue light emitting region and an organic electroluminescence device including the same. The aromatic compound according to an embodiment of the inventive concept is represented by Formula 1, and more details about the constituents are provided in the disclosure.