公开(公告)号：US12219871B2

公开(公告)日：2025-02-04

申请号：US17391636

申请日：2021-08-02

Applicant: Samsung Display Co., Ltd.

Inventor： Keigo Hoshi ,  Tetsuji Hayano ,  Yuuki Miyazaki

IPC: H10K85/60 ,  H10K50/11 ,  H10K101/40

Abstract: Provided is a light emitting device including a first electrode, a second electrode disposed on the first electrode, and an emission layer disposed between the first electrode and the second electrode. The emission layer includes at least one polycyclic compound represented by Formula 1 below, and may thus exhibit long life characteristics.

公开(公告)号：US20220123228A1

公开(公告)日：2022-04-21

申请号：US17344278

申请日：2021-06-10

Applicant: Samsung Display Co., Ltd.

Inventor： Keigo Hoshi

IPC: H01L51/00

Abstract: A light emitting device of an embodiment includes a first electrode, a second electrode disposed on the first electrode, and an emission layer disposed between the first electrode and the second electrode, wherein the emission layer includes a polycyclic compound represented by Formula 1. Accordingly, the light emitting device of an embodiment may show improved emission efficiency and increased life characteristics.

公开(公告)号：US11985893B2

公开(公告)日：2024-05-14

申请号：US16933819

申请日：2020-07-20

Applicant: Samsung Display Co., Ltd.

Inventor： Keigo Hoshi

IPC: H01L51/00 ,  C07D401/14 ,  C09K11/06 ,  H10K85/60 ,  H10K50/11

CPC classification number: H10K85/6572 ,  C07D401/14 ,  C09K11/06 ,  H10K85/654 ,  C09K2211/1018 ,  H10K50/11

Abstract: An organic electroluminescence device of an embodiment includes a first electrode, a second electrode, and an emission layer between the first electrode and the second electrode and containing an aromatic compound, wherein the aromatic compound includes a benzene ring, two unsubstituted carbazole groups directly bonded to the benzene ring, two substituted carbazole groups directly bonded to the benzene ring and each substituted with a nitrogen-containing ring group, and a substituent directly bonded to the benzene ring and selected from a cyano group, a fluorine, or a C1-C10 alkyl group substituted with a fluorine. The organic electroluminescence device may obtain good luminous efficiency and long life (long lifespan) characteristics while emitting blue light.

公开(公告)号：US12069945B2

公开(公告)日：2024-08-20

申请号：US17344278

申请日：2021-06-10

Applicant: Samsung Display Co., Ltd.

Inventor： Keigo Hoshi

IPC: H10K85/30 ,  H10K85/60 ,  H10K50/11

CPC classification number: H10K85/636 ,  H10K85/658 ,  H10K50/11

Abstract: A light emitting device of an embodiment includes a first electrode, a second electrode disposed on the first electrode, and an emission layer disposed between the first electrode and the second electrode, wherein the emission layer includes a polycyclic compound represented by Formula 1. Accordingly, the light emitting device of an embodiment may show improved emission efficiency and increased life characteristics.

公开(公告)号：US11800793B2

公开(公告)日：2023-10-24

申请号：US17091619

申请日：2020-11-06

Applicant: Samsung Display Co., Ltd.

Inventor： Hankyu Pak ,  Mun-ki Sim ,  Seokhwan Hwang ,  Junha Park ,  Jang Yeol Baek ,  Keigo Hoshi ,  Yuuki Miyazaki ,  Hyoyoung Lee ,  Minjung Jung ,  Sun Young Pak ,  Chanseok Oh

IPC: C07F5/02 ,  H10K85/60 ,  C09K11/06 ,  H10K50/11 ,  H10K50/16 ,  H10K50/17 ,  H10K101/10

CPC classification number: H10K85/631 ,  C07F5/027 ,  C09K11/06 ,  H10K85/636 ,  C09K2211/1007 ,  C09K2211/1018 ,  H10K50/11 ,  H10K50/16 ,  H10K50/171 ,  H10K85/6572 ,  H10K85/6574 ,  H10K2101/10

Abstract: An organic electroluminescence device includes a first electrode, an organic layer disposed on the first electrode, and a second electrode disposed on the organic layer, wherein the organic layer includes a polycyclic compound represented by Formula 1. The organic electroluminescence device may have high emission efficiency.

公开(公告)号：US11424417B2

公开(公告)日：2022-08-23

申请号：US16567389

申请日：2019-09-11

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Yoshimasa Fujita ,  Keigo Hoshi ,  Yuuki Miyazaki

IPC: H01L51/00 ,  C07D209/86 ,  C09K11/06 ,  H01L51/50 ,  H01L51/56

Abstract: An organic electroluminescence device includes a first electrode, a second electrode on the first electrode, and an emission layer between the first electrode and the second electrode. The emission layer may include a compound including a first phenyl group that is substituted with at least one cyano group and a second phenyl group that is substituted with five substituted or unsubstituted carbazole groups, the second phenyl group being directly bonded to the first phenyl group.