公开(公告)号：US20230287016A1

公开(公告)日：2023-09-14

申请号：US18104988

申请日：2023-02-02

Applicant: Samsung Display Co., Ltd. ,  Seoul National University R&DB Foundation ,  University-Industry Cooperation Group of Kyung Hee University

Inventor： MI EUN JUN ,  CHANGWOONG CHU ,  Soo Young PARK ,  Jongwook PARK ,  Dongmin PARK ,  Chi Hyun RYOO ,  Seyoung JUNG

IPC: C07F7/08 ,  H10K50/11 ,  H10K85/60 ,  H10K85/40 ,  H10K85/30

CPC classification number: C07F7/0812 ,  H10K50/11 ,  H10K85/658 ,  H10K85/40 ,  H10K85/654 ,  H10K85/6572 ,  H10K85/346

Abstract: Embodiments provide a light emitting device that includes a first electrode, a second electrode facing the first electrode, and an emission layer disposed between the first electrode and the second electrode, wherein the emission layer includes a first compound represented by Formula 1, which is explained in the specification:

公开(公告)号：US20230232703A1

公开(公告)日：2023-07-20

申请号：US17976605

申请日：2022-10-28

Applicant: Samsung Display Co., Ltd.

Inventor： YOONKYOO LEE ,  JIN-WON SUN ,  CHANGWOONG CHU

IPC: H01L51/00 ,  C09K11/06 ,  C07F15/00

CPC classification number: H01L51/0087 ,  C09K11/06 ,  H01L51/0072 ,  H01L51/0067 ,  C07F15/0086 ,  H01L51/0073 ,  H01L51/0094 ,  H01L51/5012

Abstract: A light emitting element that includes a first electrode, a second electrode on the first electrode, and an emission layer between the first electrode and the second electrode is provided. The emission layer includes an organometallic compound represented by Formula 1. The light emitting element exhibits long lifespan properties.

公开(公告)号：US20240215286A1

公开(公告)日：2024-06-27

申请号：US18518166

申请日：2023-11-22

Applicant: Samsung Display Co., LTD.

Inventor： HYOSUP SHIN ,  TSUYOSHI NAIJO ,  YUNJEE PARK ,  SUNG-SOO BAE ,  HOJUNG SYN ,  JIYOUNG LEE ,  CHANGWOONG CHU

IPC: H10K50/12

CPC classification number: H10K50/121 ,  H10K2101/90

Abstract: A light emitting device of an embodiment includes a first light emitting unit including a first emission layer, and a second light emitting unit including a second emission layer. The first emission layer includes a first host, a phosphorescence sensitizer, a first fluorescence dopant, the second emission layer includes a second host which is different from the first host, and a second fluorescence dopant, the first fluorescence dopant has a highest occupied molecular orbital (HOMO) energy level of about −5.2 eV or less, and the second fluorescence dopant has a HOMO energy level of about −5.2 eV or more.

公开(公告)号：US20240172470A1

公开(公告)日：2024-05-23

申请号：US18455262

申请日：2023-08-24

Applicant: Samsung Display Co., Ltd.

Inventor： JAEWEON HUR ,  HEEJOO KO ,  JIN-WON SUN ,  YOOJIN SOHN ,  EUNHYE SONG ,  PYUNGEUN JEON ,  CHANGWOONG CHU

IPC: H10K50/16 ,  H10K85/60

CPC classification number: H10K50/166 ,  H10K85/615 ,  H10K85/654 ,  H10K85/6572

Abstract: A light emitting device includes a first electrode, a hole transport region located at (e.g., on), the first electrode, a light emitting layer located at (e.g., on), the hole transport region, an electron transport region located at (e.g., on), the light emitting layer, and a second electrode located at (e.g., on), the electron transport region. The electron transport region includes a mixed layer in which a first compound represented by Formula 1 and a second compound different from the first compound and represented by Formula 2 are mixed. The mixed layer is configured so that the light emitting efficiency and device lifespan of the light emitting device may be enhanced or improved.

公开(公告)号：US20240365577A1

公开(公告)日：2024-10-31

申请号：US18534508

申请日：2023-12-08

Applicant: Samsung Display Co., Ltd.

Inventor： HOJUNG SYN ,  SUNG-SOO BAE ,  CHANGWOONG CHU

IPC: H10K50/13 ,  H10K59/35 ,  H10K85/60 ,  H10K102/00

CPC classification number: H10K50/13 ,  H10K59/35 ,  H10K85/626 ,  H10K85/633 ,  H10K85/657 ,  H10K85/6572 ,  H10K85/658 ,  H10K2102/351

Abstract: Light emitting element includes a first electrode, a hole transport region, a light emitting layer, an electron transport region, and a second electrode that are sequentially stacked. The light emitting layer includes a first sub light emitting layer adjacent the first electrode, a second sub light emitting layer on the first sub light emitting layer, and a light emitting auxiliary layer between the first sub light emitting layer and the second sub light emitting layer and including a plurality of auxiliary compounds. The light emitting auxiliary layer includes a first state in which an average separation distance between the auxiliary compounds is a first distance, and a second state in which an average separation distance between the auxiliary compounds is a second distance smaller than the first distance. An external quantum efficiency is larger when the light emitting auxiliary layer is in the second state than in the first state.

公开(公告)号：US20240284794A1

公开(公告)日：2024-08-22

申请号：US18402544

申请日：2024-01-02

Applicant: Samsung Display Co., Ltd.

Inventor： MINJE KIM ,  SERAN KIM ,  CHANSEOK OH ,  JIYOUNG LEE ,  EUNG DO KIM ,  CHANGWOONG CHU

IPC: H10K85/60 ,  C07F5/02 ,  C09K11/06

CPC classification number: H10K85/658 ,  C07F5/027 ,  C09K11/06 ,  C07B2200/05 ,  C09K2211/1018 ,  H10K50/11 ,  H10K2101/90

Abstract: A light emitting element includes a first electrode, a second electrode, and an emission layer which is disposed between the first electrode and the second electrode and includes a compound represented by Formula 1, thereby exhibiting long service life and high efficiency characteristics.

公开(公告)号：US20230257401A1

公开(公告)日：2023-08-17

申请号：US17994703

申请日：2022-11-28

Applicant: Samsung Display Co., Ltd.

Inventor： MINJU HAN ,  YOONKYOO LEE ,  HAN GEUL LEE ,  CHANGWOONG CHU

IPC: C07F7/08 ,  C07F15/00

CPC classification number: C07F7/0812 ,  C07F15/0086 ,  H01L51/0094 ,  H01L51/0087

Abstract: Embodiments provide a light emitting device that includes a first electrode, a second electrode facing the first electrode, and an emission layer disposed between the first electrode and the second electrode, wherein the emission layer includes a first compound represented by Formula 1-1 or Formula 1-2, which are each explained in the specification.

公开(公告)号：US20250072285A1

公开(公告)日：2025-02-27

申请号：US18806238

申请日：2024-08-15

Applicant: Samsung Display Co., Ltd.

Inventor： MUN-KI SIM ,  TAEIL KIM ,  SUN YOUNG PAK ,  JUNHA PARK ,  CHANSEOK OH ,  CHANGWOONG CHU ,  Giwoong HAN

IPC: H10K85/60 ,  C07F5/02 ,  C09K11/02 ,  C09K11/06 ,  H10K50/12 ,  H10K85/30 ,  H10K85/40

Abstract: A light emitting element that may include a first electrode, a second electrode provided on the first electrode, and an emission layer provided between the first electrode and the second electrode is provided. The emission layer includes a first polycyclic compound and may also include second to fourth compounds. The polycyclic compound has a pentacyclic core including aromatic groups fused to heteroatoms and has a sterically-bulky, first substituent linked to the core. Steric bulk of the polycyclic compound may increase intermolecular distances and prevent or reduce intermolecular interactions that could impede multi-resonance characteristics of the pentacyclic core.

公开(公告)号：US20240357852A1

公开(公告)日：2024-10-24

申请号：US18587624

申请日：2024-02-26

Applicant: Samsung Display Co., Ltd.

Inventor： SUNG-SOO BAE ,  TSUYOSHI NAIJO ,  SANG GYUN KIM ,  HOJUNG SYN ,  HYOSUP SHIN ,  JIYOUNG LEE ,  CHANGWOONG CHU

IPC: H10K50/17 ,  C09K11/06 ,  H10K50/18 ,  H10K59/35 ,  H10K85/30 ,  H10K85/60 ,  H10K102/00

CPC classification number: H10K50/171 ,  C09K11/06 ,  H10K50/18 ,  H10K59/353 ,  H10K85/342 ,  H10K85/346 ,  H10K85/626 ,  H10K85/631 ,  H10K85/654 ,  H10K85/6572 ,  H10K2102/351

Abstract: A light emitting element 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. The electron transport region includes an electron transport layer on the emission layer, a first electron injection layer on the electron transport layer, and a second electron injection layer on the first electron injection layer, the thicknesses of the first and second electron injection layers are each about 1 nm to about 5 nm, the first electron injection layer includes a phenanthroline derivative and/or a phosphine oxide derivative, and the second electron injection layer includes a metal material.

公开(公告)号：US20240341184A1

公开(公告)日：2024-10-10

申请号：US18436263

申请日：2024-02-08

Applicant: Samsung Display Co., Ltd.

Inventor： JIYOUNG LEE ,  TSUYOSHI NAIJO ,  YUNJEE PARK ,  SUNG-SOO BAE ,  HOJUNG SYN ,  HYOSUP SHIN ,  CHANGWOONG CHU

IPC: H10K85/60 ,  C09K11/06 ,  H10K50/12 ,  H10K50/13 ,  H10K85/30 ,  H10K85/40

CPC classification number: H10K85/658 ,  C09K11/06 ,  H10K85/346 ,  H10K85/40 ,  H10K85/6572 ,  C09K2211/1018 ,  C09K2211/1044 ,  C09K2211/185 ,  H10K50/121 ,  H10K50/13 ,  H10K85/654

Abstract: Embodiments provide a light emitting element and a display device including the same. The light emitting element includes a first electrode, a second electrode, and a plurality of emission layers disposed between the first electrode and the second electrode, wherein at least one of the plurality of emission layers include a hole transporting host, an electron transporting host, a phosphorescent sensitizer, and a first fluorescent dopant. The first fluorescent dopant comprises a pentacyclic fused ring core that includes one boron atom and two heteroatoms as ring-forming atoms, and at least one amine substituent of the fused ring core; the at least one amine substituent is substituted with at least one substituted or unsubstituted pyrenyl group; and a difference between a triplet state energy level of the first fluorescent dopant and a singlet state energy level of the first fluorescent dopant is equal to or greater than about 0.4 eV.