公开(公告)号：US12207548B2

公开(公告)日：2025-01-21

申请号：US17030031

申请日：2020-09-23

Applicant: Samsung Display Co., Ltd.

Inventor： Hyunmi Doh ,  Changhee Lee ,  Myoungjin Park ,  Jaekook Ha

IPC: B82Y40/00 ,  C01G9/02 ,  C09K11/88 ,  H10K50/16 ,  H10K85/60

Abstract: A light-emitting device includes a first electrode, an emission layer, an electron transport layer, a metal-nucleation inducing layer, and a second electrode. The metal-nucleation inducing layer is in direct contact with the second electrode, and includes a metal-nucleation inducing material having at least one metal-nucleation inducing group. The second electrode includes a metal-containing film that is hybridized with the metal-nucleation inducing material. The metal-nucleation inducing group is a π electron-deficient nitrogen-containing C1-C60 cyclic group that is unsubstituted or substituted with at least one R1 or a group represented by one of Formulae 1A to 1E, and does not comprise a group represented by *—C(═O)(OH) and a cyano group. The emission efficiency and/or lifespan of the light-emitting device may be improved because of the metal-nucleation inducing layer.

公开(公告)号：US11955468B2

公开(公告)日：2024-04-09

申请号：US16932591

申请日：2020-07-17

Applicant: Samsung Display Co., Ltd.

Inventor： Yunku Jung ,  Sungwoon Kim ,  Changhee Lee ,  Jaekook Ha ,  Yunhyuk Ko ,  Jaehoon Kim ,  Minki Nam ,  Hyunmi Doh ,  Myoungjin Park ,  Jae Hong Park ,  Junwoo Park

IPC: H01L25/16 ,  H01L23/00 ,  H01L33/44

CPC classification number: H01L25/167 ,  H01L24/32 ,  H01L24/83 ,  H01L33/44 ,  H01L2224/32137 ,  H01L2224/80143 ,  H01L2224/83085 ,  H01L2224/83896 ,  H01L2924/12041

Abstract: Provided is a light emitting element according to embodiments which includes a body including a semiconductor layer and an active layer, and a ligand including a head portion bonded to a surface of the body, an end portion spaced apart from the body, and having a positive or a negative charge, and a chain portion connecting the head portion and the end portion.

公开(公告)号：US20230180504A1

公开(公告)日：2023-06-08

申请号：US18070310

申请日：2022-11-28

Applicant: Samsung Display Co., Ltd.

Inventor： Yunhyuk Ko ,  Changhee Lee ,  Yunku Jung ,  Changyeol Han

IPC: H10K50/16 ,  H10K50/115 ,  H10K59/123

CPC classification number: H01L51/5072 ,  H01L51/502 ,  H01L27/3248

Abstract: A light-emitting device and an electronic apparatus including the light-emitting device. The light-emitting device includes: a first electrode; a second electrode facing the first electrode; and an interlayer between the first electrode and the second electrode, wherein the interlayer may include an emission layer and an electron transport layer, the electron transport layer may be between the emission layer and the second electrode, the electron transport layer may include an electron transporting particle, the electron transporting particle may include a core, a first shell covering the core, and a second shell covering the first shell, the first shell may include a first compound, the second shell may include a second compound, the core may include a third compound, and the first compound and the second compound may each independently include an oxide, a chalcogenide, or any combination thereof.

公开(公告)号：US20230045448A1

公开(公告)日：2023-02-09

申请号：US17853872

申请日：2022-06-29

Applicant: Samsung Display Co., Ltd. ,  Hannam University Institute for Industry-Academia Cooperation

Inventor： Yunhyuk Ko ,  Dongryeol Whang ,  Changhee Lee ,  Kwangsup Lee ,  Prem PRABHAKARAN ,  Daeho Hwang

IPC: H01L51/50 ,  C09K11/88 ,  C09K11/74 ,  C09K11/70 ,  C09K11/66 ,  C09K11/62 ,  C09K11/56 ,  C09D11/033 ,  C09D11/03

Abstract: A quantum dot, and an ink composition, a light-emitting device, an optical member, and an apparatus, each including the quantum dot. The quantum dot includes: a nanoparticle; and at least one ligand on a surface of the nanoparticle, wherein the nanoparticle does not include mercury and cadmium, and the at least one ligand includes at least two thiol groups and at least one hydrophilic group.

公开(公告)号：US20230038085A1

公开(公告)日：2023-02-09

申请号：US17849542

申请日：2022-06-24

Applicant: Samsung Display Co., Ltd.

Inventor： Hyunmi Doh ,  Changhee Lee ,  Jingoo Kang ,  Sehun Kim ,  Yonghwi Kim ,  Jonghoon Kim ,  Seunguk Noh ,  Myoungjin Park ,  Yunku Jung

IPC: C01G9/02 ,  H01L51/50 ,  H01L51/56

Abstract: A method of manufacturing an inorganic oxide particle having an inorganic oxide core and a hydroxyl group bonded to a surface thereof includes: preparing a first composition including an inorganic oxide core precursor and a proton supply compound; and heating the first composition. Additional embodiments provide a method of manufacturing an inorganic oxide layer including an inorganic oxide particle manufactured by the method, and a light-emitting device including an inorganic oxide layer manufactured by the method.

公开(公告)号：US20220367830A1

公开(公告)日：2022-11-17

申请号：US17660722

申请日：2022-04-26

Applicant: Samsung Display Co., Ltd.

Inventor： Yunku Jung ,  Changhee Lee ,  Hyekyoung Choi ,  Jaekook Ha

IPC: H01L51/50 ,  H01L51/56 ,  H01L51/00 ,  C07C245/12 ,  C07C245/06 ,  C07C321/06 ,  C07F15/00 ,  C07F19/00 ,  C07D209/86 ,  C07D401/12 ,  C07D409/12 ,  C07C211/61 ,  C07D307/91 ,  C07D405/12 ,  C07C211/54 ,  C07C211/55 ,  C07D487/04 ,  C07C255/34 ,  C07C255/31 ,  C07D235/18 ,  C07D213/06 ,  C07D401/04 ,  C07C15/28 ,  C07D403/10 ,  C07D251/24 ,  C07D239/26 ,  C07D519/00 ,  C07D403/14 ,  C07D249/08 ,  C07F5/06 ,  C07F1/02

Abstract: Disclosed are a light-emitting device and a method of manufacturing the same. The light-emitting device includes: a first electrode; a second electrode facing the first electrode; an emission layer between the first electrode and the second electrode and including a quantum dot including a first ligand bonded to a surface thereof; and a charge transport layer including an inorganic nanoparticle including a second ligand bonded to a surface thereof, wherein an interface between the emission layer and the charge transport layer includes a cross-link in which the first ligand on the surface of the quantum dot and the second ligand on the surface of the inorganic nanoparticle are linked by a cross-linking agent.

公开(公告)号：US11866627B2

公开(公告)日：2024-01-09

申请号：US17192388

申请日：2021-03-04

Applicant: Samsung Display Co., Ltd.

Inventor： Changhee Lee ,  Dukki Kim ,  Hyojin Ko ,  Sehun Kim ,  Jaehoon Kim ,  Hyunmi Doh ,  Yunku Jung ,  Jaekook Ha

IPC: C09K11/06 ,  C07C309/30 ,  C07C53/00 ,  C07C63/08 ,  C07F9/54 ,  C07C43/10 ,  C07C211/09 ,  C07C309/04 ,  H10K85/60 ,  H10K50/115 ,  H10K71/00 ,  H10K71/15

CPC classification number: C09K11/06 ,  C07C43/10 ,  C07C53/00 ,  C07C63/08 ,  C07C211/09 ,  C07C309/04 ,  C07C309/30 ,  C07F9/5407 ,  C07F9/5442 ,  H10K85/60 ,  C09K2211/10 ,  C09K2211/1007 ,  H10K50/115 ,  H10K71/00 ,  H10K71/15

Abstract: A quantum dot composition includes a quantum dot, and a ligand bonded to a surface of the quantum dot, wherein the ligand includes a head portion bonded to the surface of the quantum dot and containing a polar solvent dissociative functional group, and a tail portion connected to the head portion. A quantum dot composition according to an embodiment is used to form an emission layer of a light emitting element to enhance luminous efficiency of the light emitting element including an emission layer formed through the quantum dot composition.

公开(公告)号：US11802239B2

公开(公告)日：2023-10-31

申请号：US17203538

申请日：2021-03-16

Applicant: Samsung Display Co., Ltd. ,  Hongik University Industry-Academia Cooperation Foundation

Inventor： Yunhyuk Ko ,  Heesun Yang ,  Changhee Lee ,  Kyunghye Kim ,  Sungwoon Kim ,  Jungho Jo

IPC: C09K11/62 ,  C09K11/70 ,  C09K11/08 ,  C09K11/56 ,  C01G15/00 ,  H05B33/14 ,  C01G9/08 ,  C01B19/04 ,  H10K50/115 ,  B82Y20/00 ,  B82Y30/00 ,  B82Y40/00 ,  H10K102/00

CPC classification number: C09K11/626 ,  C01B19/04 ,  C01G9/08 ,  C01G15/006 ,  C09K11/0883 ,  C09K11/565 ,  C09K11/70 ,  H05B33/14 ,  H10K50/115 ,  B82Y20/00 ,  B82Y30/00 ,  B82Y40/00 ,  C01P2004/64 ,  C01P2006/60 ,  H10K2102/00

Abstract: Provided are a quantum dot, a method of preparing the quantum dot, an optical member including the quantum dot, and an electronic device including the quantum dot. The quantum dot includes a core including indium (In), A1, and A2; and a shell covering the core. A1 is a Group V element, A2 is a Group III element other than indium, and the core includes a first region, and a second region covering the first region. The first region does not include A2, and includes indium and A1, and the second region includes indium, A1, and A2, and indium and A2 are alloyed with each other in the second region.

公开(公告)号：US20230320116A1

公开(公告)日：2023-10-05

申请号：US18128965

申请日：2023-03-30

Applicant: Samsung Display Co., Ltd. ,  Research & Business Foundation, SUNGKYUNKWAN UNIVERSITY

Inventor： Yunhyuk Ko ,  Changhee Lee ,  Youngsik Kim ,  Taewan Kim ,  Sohee Jeong ,  Eunhye Cho ,  Mahnmin Choi

IPC: H10K50/115 ,  H01L33/50 ,  B82Y30/00 ,  B82Y40/00 ,  C09K11/06

CPC classification number: H10K50/115 ,  H01L33/502 ,  B82Y30/00 ,  B82Y40/00 ,  C09K11/06 ,  C09K2211/188

Abstract: A method of preparing quantum dot includes: forming a first mixture comprising a core, a zinc-containing first material, and a selenium-containing second material; forming a first intermediate comprising a core and a first shell, from the first mixture, followed by forming a second mixture comprising the first intermediate; forming a third mixture by adding a zinc-containing third material and a sulfur-containing fourth material to the second mixture; forming a second intermediate comprising the core, the first shell, and a second shell, from the third mixture, followed by forming a fourth mixture comprising the second intermediate; adding a ligand precursor-containing fifth material to the fourth mixture; and forming a ligand layer covering the second shell of the second intermediate, wherein an amount of the ligand precursor is in a range of about 10 pbw to about 22 pbw based on 100 pbw of the zinc-containing third material in the fourth mixture.

公开(公告)号：US20230313034A1

公开(公告)日：2023-10-05

申请号：US18194764

申请日：2023-04-03

Applicant: Samsung Display Co., Ltd.

Inventor： Sehun Kim ,  Changhee Lee ,  Dukki Kim ,  Wonjun Park ,  Jongwoo Shin ,  Sangyeop Lee ,  Jaekook Ha

IPC: C09K11/08 ,  H10K50/115 ,  H10K50/15 ,  H10K50/16 ,  B82Y30/00 ,  B82Y40/00

CPC classification number: C09K11/0811 ,  H10K50/115 ,  C09K11/0816 ,  H10K50/15 ,  H10K50/16 ,  B82Y30/00 ,  B82Y40/00

Abstract: Embodiments provide a method of preparing a metal oxide composition, a light-emitting device including a metal oxide layer formed using a metal oxide composition prepared by the method, and an electronic apparatus including the light-emitting device. The method includes preparing a first metal oxide particle, and forming a metal oxide particle by adding a halide compound to the first metal oxide particle, and treating the first metal oxide particle with the halide compound at a temperature equal to or less than about 60° C.