公开(公告)号：US20230323203A1

公开(公告)日：2023-10-12

申请号：US18132896

申请日：2023-04-10

Applicant: Samsung Display Co., Ltd.

Inventor： Changyeol Han ,  Yunhyuk KO ,  Yunku Jung

IPC: C09K11/88 ,  H01L33/50

CPC classification number: C09K11/883 ,  H01L33/502 ,  B82Y20/00

Abstract: A method of preparing a quantum dot, an optical member including the quantum dot prepared using the method, and an electronic device including the quantum dot are provided. The method includes forming a first particle including a core and a protective shell from a quantum dot composition including a precursor containing a tellurium (Te) element, a precursor containing a Group II element, and a precursor containing a Group VI element; purifying the first particle; and forming a second particle including a first shell by mixing the first particle with a first shell composition including the precursor containing a Group II element and the precursor containing a Group VI element and forming the first shell from the protective shell.

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：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：US20210043863A1

公开(公告)日：2021-02-11

申请号：US16920730

申请日：2020-07-05

Applicant: Samsung Display Co., Ltd.

Inventor： Yunku Jung

IPC: H01L51/50 ,  H01L27/32 ,  H01L51/56 ,  C09K11/06 ,  C09K11/02 ,  H01L51/00

Abstract: A quantum dot composition of an embodiment includes: a quantum dot; a ligand combined with a surface of the quantum dot; and a ligand scavenger having a nucleophilic reaction group.

公开(公告)号：US12258504B2

公开(公告)日：2025-03-25

申请号：US18407326

申请日：2024-01-08

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

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：US12129416B2

公开(公告)日：2024-10-29

申请号：US17219653

申请日：2021-03-31

Applicant: Samsung Display Co., Ltd.

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

IPC: C09K11/06 ,  B82Y20/00 ,  B82Y30/00 ,  B82Y40/00 ,  H10K50/115 ,  H10K102/00

CPC classification number: C09K11/06 ,  H10K50/115 ,  B82Y20/00 ,  B82Y30/00 ,  B82Y40/00 ,  C09K2211/10 ,  H10K2102/00

Abstract: A quantum dot composition includes a quantum dot having a surface to which a ligand is bonded, and a photoacid generator. The quantum dot composition according to one or more embodiments may be applied to an emission layer of a light emitting element and a display device, thereby improving luminous efficiency of the light emitting element.

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.