公开(公告)号：US20210143342A1

公开(公告)日：2021-05-13

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

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：US20240260467A1

公开(公告)日：2024-08-01

申请号：US18530901

申请日：2023-12-06

Applicant: Samsung Display Co., Ltd.

Inventor： Hirokazu KUWABARA ,  Keigo HOSHI ,  Ryuhei FURUE

IPC: H10K85/60 ,  C07B59/00 ,  C09K11/06 ,  H10K85/30 ,  H10K85/40

CPC classification number: H10K85/658 ,  C07B59/004 ,  C09K11/06 ,  H10K85/346 ,  H10K85/40 ,  H10K85/622 ,  H10K85/623 ,  H10K85/631 ,  H10K85/654 ,  H10K85/6572 ,  H10K2101/20

Abstract: Embodiments provide a light emitting element that 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. the emission layer includes a polycyclic compound represented by Formula 1, which is explained in the specification.

公开(公告)号：US20240138263A1

公开(公告)日：2024-04-25

申请号：US18469108

申请日：2023-09-18

Applicant: Samsung Display Co., LTD.

Inventor： Makoto YAMAMOTO ,  Keigo HOSHI ,  Yuji SUZAKI ,  Hirokazu KUWABARA ,  Nobutaka AKASHI ,  Ryuhei FURUE ,  Toshiyuki MATSUURA ,  Yoshiro SUGITA ,  Yuma AOKI ,  Yuuki MIYAZAKI

IPC: H10K85/60 ,  C09K11/06

CPC classification number: H10K85/658 ,  C09K11/06 ,  H10K85/631 ,  H10K85/6572 ,  H10K85/6574 ,  H10K85/6576 ,  H10K2101/20

Abstract: A light emitting element of one or more embodiments includes a first electrode, a second electrode oppositely to the first electrode, and an emission layer between the first electrode and the second electrode. The light emitting element of one or more embodiments includes a polycyclic compound represented by a specific chemical structure in the emission layer, thereby showing improved emission efficiency and life characteristics.

公开(公告)号：US20230263047A1

公开(公告)日：2023-08-17

申请号：US17988637

申请日：2022-11-16

Applicant: Samsung Display Co., Ltd.

Inventor： Yoshiro SUGITA ,  Keigo HOSHI ,  Ryuhei FURUE

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

CPC classification number: H01L51/008 ,  C07F5/027 ,  C09K11/06 ,  H01L51/5012

Abstract: A light emitting element includes a first electrode, a second electrode, and an emission layer disposed between the first electrode and the second electrode and including a polycyclic compound represented by Formula 1 below, thereby showing high emission efficiency. The substituents of Formula 1 are the same as defined in the detailed descriptions.

公开(公告)号：US20230225208A1

公开(公告)日：2023-07-13

申请号：US18146164

申请日：2022-12-23

Applicant: Samsung Display Co., Ltd.

Inventor： Keigo HOSHI ,  Ryuhei FURUE ,  Yoshiro SUGITA

IPC: H10K85/60 ,  H10K50/11 ,  C07F5/02

CPC classification number: H10K85/658 ,  H10K50/11 ,  H10K85/6572 ,  H10K85/6574 ,  H10K85/6576 ,  H10K85/631 ,  H10K85/657 ,  C07F5/027 ,  H10K2101/20

Abstract: Provided is a light emitting element includes a polycyclic compound in which an electron donor substituent, which may increase the photoluminescence quantum yield (PLQY) and oscillator strength (f), is introduced at the para-position of a boron atom, thereby exhibiting high efficiency and long service life characteristics.

公开(公告)号：US20220223790A1

公开(公告)日：2022-07-14

申请号：US17459393

申请日：2021-08-27

Applicant: Samsung Display Co., Ltd.

Inventor： Yuji SUZAKI ,  Hirokazu KUWABARA ,  Keigo HOSHI ,  Ryuhei FURUE ,  Tetsuji HAYANO ,  Yuuki MIYAZAKI

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

Abstract: Provided is an organic electroluminescence device including 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. The emission layer includes a polycyclic compound represented by Formula 1, and thus the organic electroluminescence device exhibits high luminous efficiency.