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公开(公告)号：US20250092310A1
公开(公告)日：2025-03-20
申请号：US18828970
申请日：2024-09-09
Applicant: Samsung Display Co., Ltd.
Inventor： Yunku Jung , Sooho Lee , Heunggyu Kim , Changyeol Han
Abstract: A quantum dot, and an ink composition, a light-emitting device, an optical member, and an apparatus, each including the quantum dot are provided. The quantum dot includes a nanoparticle and a first ligand and a second ligand which are disposed on the surface of the nanoparticle, wherein the first ligand is represented by Formula 1, and the second ligand includes at least one selected from among an amine group, a phosphine group, an imidazole group, and a pyridine group, wherein each of the first ligand and the second ligand does not include a thiol group.
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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.
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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
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.
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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
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.
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公开(公告)号：US11917845B2
公开(公告)日：2024-02-27
申请号：US17336011
申请日：2021-06-01
Applicant: Samsung Display Co., Ltd.
Inventor： Sooho Lee , Changhee Lee , Hyunmi Doh
IPC: H10K50/16 , C09K11/02 , C09K11/54 , C09K11/56 , C09K11/55 , C09K11/06 , H10K50/115 , H10K50/828 , H10K71/00 , H10K71/15 , H10K71/13 , H10K102/00
CPC classification number: H10K50/16 , C09K11/02 , C09K11/06 , C09K11/54 , C09K11/55 , C09K11/565 , H10K50/115 , H10K50/828 , H10K71/00 , H10K71/135 , H10K71/15 , H10K2102/331
Abstract: Provided are a light-emitting device, an electronic apparatus including the same, and a method of manufacturing the light-emitting device, wherein 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 includes an emission layer and an electron transport layer, the electron transport layer is between the emission layer and the second electrode, and the electron transport layer includes an electron transport particle, the electron transport particle includes a core and a shell covering the core, the core includes an oxide, a chalcogenide, or any combination thereof, and the shell includes a chalcogenide, the chalcogenide of the core being the same as or different from the chalcogenide of the shell.
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Patent Agency Ranking
公开(公告)号：US11870001B2
公开(公告)日：2024-01-09
申请号：US17443402
申请日：2021-07-26
Inventor： Sooho Lee , Minki Nam , Sungwoon Kim , Jeongwoo Park , Wanki Bae , Changhee Lee , Byeongguk Jeong
IPC: H01L31/12 , H01L31/0384 , H01L31/103 , H01L31/18 , H10K50/115 , H10K59/60 , H10K71/00 , B82Y40/00 , B82Y20/00
CPC classification number: H01L31/125 , H01L31/03845 , H01L31/1032 , H01L31/1035 , H01L31/184 , H01L31/1828 , H10K50/115 , H10K59/60 , H10K71/00 , B82Y20/00 , B82Y40/00
Abstract: An electronic device includes a semiconductor nanoparticle, and a method of manufacturing the semiconductor nanoparticle is additionally provided. The semiconductor nanoparticle includes: a core including a first element; and a shell covering at least a portion of a surface of the core and including a second element and a third element, wherein the first element, the second element, and the third element are different from each other, and the first element and the second element are chemically bonded to each other on the at least a portion of the surface of the core.
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7.发明公开公开(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
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.
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公开(公告)号：US11882712B2
公开(公告)日：2024-01-23
申请号：US17171893
申请日：2021-02-09
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.
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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
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.
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公开(公告)号：US20230313037A1
公开(公告)日：2023-10-05
申请号：US18118631
申请日：2023-03-07
Inventor： Sooho Lee , Dohchang Lee , Sangmin Yeo
CPC classification number: C09K11/70 , C09K11/565 , F21V9/30 , H10K50/115
Abstract: A method of preparing a quantum dot, a quantum dot prepared by the method, and an optical member and an electronic apparatus that include the quantum dot are provided. The method includes injecting a first solvent into a first reaction vessel, preparing a first composition by injecting a first semiconductor compound into the first reaction vessel, and forming a first shell by injecting a second composition including the second precursor into the first reaction vessel.
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