公开(公告)号：US20220228055A1

公开(公告)日：2022-07-21

申请号：US17648346

申请日：2022-01-19

Applicant: Samsung Display Co., Ltd.

Inventor： Sanghee Yu ,  Kawon Pak ,  Seunghee Jang ,  Kyungsig Lee ,  Taekjoon Lee

IPC: C09K11/02 ,  C09K11/88 ,  C09K11/08 ,  C09D11/50 ,  C09D11/037 ,  H01L51/50

Abstract: Provided are a quantum dot including a core including crystals of a first semiconductor; a shell located on the core and including crystals of at least one second semiconductor; a first region located on the shell and including a first ligand; and an outerlayer located on the first region and an oligomer and/or polymer including a metal and a polar organic group, and an ink composition, an electronic device, and an optical member including the quantum dot.

公开(公告)号：US20230193129A1

公开(公告)日：2023-06-22

申请号：US17988630

申请日：2022-11-16

Applicant: Samsung Display Co., Ltd.

Inventor： Jaebok Chang ,  Kyungsig Lee ,  Seunghee Jang

IPC: C09K11/88 ,  C09D11/104 ,  C09K11/02

CPC classification number: C09K11/883 ,  C09D11/104 ,  C09K11/02 ,  B82Y20/00

Abstract: A quantum-dot containing complex includes: a first ligand, which is a hydrocarbon compound including a hydrophilic moiety and a lipophilic moiety and has an aspect ratio of 5 or more; and a second ligand, which is a hydrocarbon compound including a hydrophilic moiety and a lipophilic moiety and has an aspect ratio of 4 or less, wherein the hydrophile-lipophile balances (HLBs) of the first ligand and the second ligand are each independently 7 or more.

公开(公告)号：US20240279540A1

公开(公告)日：2024-08-22

申请号：US18490665

申请日：2023-10-19

Applicant: Samsung Display Co., Ltd.

Inventor： Juo Nam ,  Joonhyung Kim ,  Kawon Pak ,  Kyungsig Lee ,  Taekjoon Lee ,  Seunghee Jang ,  Jaebok Chang

IPC: C09K11/08 ,  C09D11/03 ,  C09K11/06 ,  H10K50/115

CPC classification number: C09K11/08 ,  C09D11/03 ,  C09K11/06 ,  H10K50/115

Abstract: A quantum dot composite including a quantum dot and a quantum dot ligand located on a surface of the quantum dot is provided. The quantum dot ligand includes a hydrophilic linking portion including an oxygen atom, a bonding portion linked to one side of the linking portion and including different functional groups bonded to the quantum dot, and a terminal portion linked to the linking portion at a side opposite to the linking portion. The quantum dot ligand is configured to prevent or reduce aggregation of quantum dots and improve their dispersion in a solvent thereby improving the light and/or heat resistance of electronic apparatus that utilize the quantum dot composite.

公开(公告)号：US20240150645A1

公开(公告)日：2024-05-09

申请号：US18325291

申请日：2023-05-30

Applicant: Samsung Display Co., Ltd.

Inventor： Jaebok Chang ,  Kyungsig Lee ,  Seunghee Jang ,  Seihwan Ahn ,  Sanghee Yu

IPC: C09K11/02 ,  C09K11/08 ,  C09K11/88 ,  H10K50/115

CPC classification number: C09K11/025 ,  C09K11/0883 ,  C09K11/883 ,  H10K50/115 ,  B82Y20/00

Abstract: Embodiments provide a method of manufacturing a quantum dot-containing complex that includes preparing quantum dots, reacting the quantum dots with a first ligand, and reacting a resultant product of the reaction between the quantum dots and the first ligand with a second ligand, wherein the first ligand is a compound having a pKa value less than or equal to about 8, and the second ligand is a compound having a pKa value greater than about 8.

公开(公告)号：US20230309333A1

公开(公告)日：2023-09-28

申请号：US18187591

申请日：2023-03-21

Applicant: Samsung Display Co., Ltd.

Inventor： Kyungsig Lee ,  Jaebok Chang ,  Junehyuk Jung

IPC: H10K50/115 ,  B82Y30/00 ,  C09K11/70 ,  C09K11/88

CPC classification number: H10K50/115 ,  B82Y30/00 ,  C09K11/70 ,  C09K11/883

Abstract: A quantum dot composition and an electronic apparatus including the quantum dot composition are provided. The quantum dot composition includes a first quantum dot and a second quantum dot, and the first quantum dot and the second quantum dot each independently include a core; and a shell covering at least part of the core, the core of the first quantum dot includes a first semiconductor compound, the core of the second quantum dot includes a second semiconductor compound, the first semiconductor compound and the second semiconductor compound are different from each other, and a maximum emission wavelength of a photoluminescence (PL) spectrum of the first quantum dot is greater than a maximum emission wavelength of a PL spectrum of the second quantum dot.