公开(公告)号：US20230265305A1

公开(公告)日：2023-08-24

申请号：US18169020

申请日：2023-02-14

Applicant: Samsung Display Co., Ltd.

Inventor： Yunku Jung ,  Yohan Suh ,  Yunhyuk Ko ,  Chulsoon Park ,  Sooho Lee

IPC: C09D11/50 ,  H10K50/115 ,  C09D11/033 ,  H10K85/30 ,  B82Y30/00 ,  C09K11/88

CPC classification number: C09D11/50 ,  H10K50/115 ,  C09D11/033 ,  H10K85/30 ,  B82Y30/00 ,  C09K11/883

Abstract: An ink composition for a light-emitting device may include: quantum dots; and a mixed solvent of a first solvent, a second solvent, and a third solvent, wherein the first solvent may be a C6-C50 aromatic hydrocarbon, the second solvent may be a C1-C20 aliphatic hydrocarbon, and the third solvent may be a ternary alkyl phosphine and/or a ternary alkyl amine.

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：US20240279168A1

公开(公告)日：2024-08-22

申请号：US18496011

申请日：2023-10-27

Applicant: Samsung Display Co., Ltd.

Inventor： Yunku Jung ,  Yunhyuk Ko ,  Seonhui Baek ,  Sehun Kim

IPC: C07C323/22 ,  C07C323/58 ,  C07D211/54 ,  C07F7/08 ,  H10K50/11 ,  H10K50/15 ,  H10K50/16

CPC classification number: C07C323/22 ,  C07C323/58 ,  C07D211/54 ,  C07F7/081 ,  H10K50/11 ,  H10K50/15 ,  H10K50/16 ,  B82Y30/00

Abstract: Embodiments provide a ligand compound, an inorganic nanoparticle-composite including the ligand compound, an ink composition for a light-emitting device including the inorganic nanoparticle-composite, a light-emitting device including a layer formed of the ink composition, and an electronic apparatus including the light-emitting device. The ligand is represented by Formula 1, which is explained in the specification:

公开(公告)号：US12043778B2

公开(公告)日：2024-07-23

申请号：US16937088

申请日：2020-07-23

Applicant: Samsung Display Co., Ltd.

Inventor： Yunku Jung ,  Yunhyuk Ko ,  Minki Nam ,  Sooho Lee

IPC: C09K11/02 ,  B82Y40/00 ,  C09K11/88 ,  H10K50/115 ,  B82Y20/00 ,  B82Y30/00 ,  H10K71/13

CPC classification number: C09K11/025 ,  C09K11/883 ,  H10K50/115 ,  B82Y20/00 ,  B82Y30/00 ,  B82Y40/00 ,  H10K71/135

Abstract: A method for producing a quantum dot composition includes providing a preliminary quantum dot composition containing a quantum dot to which a ligand is bonded and a free ligand, providing an adsorbent to the preliminary quantum dot composition, adsorbing the free ligand to the adsorbent, and removing a modified adsorbent to which the free ligand is adsorbed to provide a purified quantum dot composition. A light emitting element including the purified quantum dot composition may have superior luminous efficiency.

公开(公告)号：US20240138253A1

公开(公告)日：2024-04-25

申请号：US18478491

申请日：2023-09-29

Applicant: Samsung Display Co., Ltd.

Inventor： Jungho Jo ,  Yunku Jung ,  Yunhyuk Ko ,  Chulsoon Park ,  Sooho Lee

IPC: H10K85/30 ,  C07F3/06 ,  H10K50/115 ,  H10K50/16 ,  H10K50/17 ,  H10K59/12

CPC classification number: H10K85/381 ,  C07F3/06 ,  H10K50/115 ,  H10K50/16 ,  H10K50/171 ,  H10K59/12

Abstract: A metal oxide nanoparticle includes a ligand linked to a surface of the metal oxide nanoparticle, where the ligand includes a first ligand and a second ligand, the first ligand includes a C1-C60 alkylamine compound and/or a C2-C60 alkenylamine compound, and the second ligand includes a C6-C60 alkylthiol compound and/or a phosphine compound.

公开(公告)号：US20230242816A1

公开(公告)日：2023-08-03

申请号：US18103384

申请日：2023-01-30

Applicant: Samsung Display Co., Ltd.

Inventor： Yunku Jung ,  Yunhyuk Ko ,  Chulsoon Park ,  Yohan Suh ,  Sooho Lee ,  Changyeol Han

IPC: C09K11/88 ,  C09K11/08

CPC classification number: C09K11/883 ,  C09K11/0883 ,  B82Y20/00

Abstract: A quantum dot, a method of preparing the same, and an electronic apparatus including the same. The quantum dot includes: a core; and a shell around at least portion of the core. The core may include a first semiconductor compound including indium (In) and phosphorus (P), and in the first semiconductor compound, a ratio between the number of moles (mol) of In and the number of moles (mol) of P (MIn/MP) may be greater than 1.

公开(公告)号：US11882712B2

公开(公告)日：2024-01-23

申请号：US17171893

申请日：2021-02-09

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

Inventor： Minki Nam ,  Sungwoon Kim ,  Yunhyuk Ko ,  Wan Ki Bae ,  Sooho Lee ,  Byeong Guk Jeong ,  Yunku Jung

IPC: H10K50/115 ,  C09K11/88 ,  C09K11/08 ,  B82Y40/00 ,  B82Y20/00

CPC classification number: H10K50/115 ,  C09K11/0883 ,  C09K11/883 ,  B82Y20/00 ,  B82Y40/00

Abstract: A quantum dot includes a core and a plurality of shell layers surrounding the core. The core has a band gap less than that of the outermost shell layer, and the outermost shell layer has a band gap less than that of a second shell layer. Thus, a light emitting device including the quantum dot according to an embodiment may have an improved lifespan of the device and excellent luminous efficiency characteristics.

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：US20230345749A1

公开(公告)日：2023-10-26

申请号：US18179949

申请日：2023-03-07

Applicant: Samsung Display Co., Ltd.

Inventor： Yunku Jung ,  Yohan Suh ,  Sooho Lee ,  Yunhyuk Ko

IPC: B82Y30/00 ,  B82Y40/00 ,  H10K50/115 ,  H10K50/16 ,  C09D5/22 ,  H10K50/15

CPC classification number: H10K50/115 ,  B82Y30/00 ,  B82Y40/00 ,  C09D5/22 ,  H10K50/15 ,  H10K50/16

Abstract: A method of preparing a quantum dot, the method being capable of controlling an energy level of a quantum dot is provided. A quantum dot having a controlled energy level, and a light-emitting device, an optical member, and an apparatus that include the quantum dot are also provided.