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：US20220204795A1

公开(公告)日：2022-06-30

申请号：US17469761

申请日：2021-09-08

Applicant: Samsung Display Co., Ltd.

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

IPC: C09D11/50 ,  C09D11/52 ,  C09D11/107 ,  C09D11/101 ,  C09D11/037 ,  C09D11/322 ,  H01L51/50 ,  H01L51/52

Abstract: An ink composition including: a first multifunctional monomer including two or more photo-functional groups and a first carbon-containing chain; a second monofunctional monomer including one photo-functional group and a second carbon-containing chain; and semiconductor nanoparticles, wherein the first carbon-containing chain and the second carbon-containing chain each independently contain an alkyl group, and the number of carbons in the second carbon-containing chain is less than the number of carbons in the first carbon-containing chain. A film formed using the ink composition, and an electronic apparatus including the film.

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：US20230257651A1

公开(公告)日：2023-08-17

申请号：US18165210

申请日：2023-02-06

Applicant: Samsung Display Co., Ltd.

Inventor： Kawon Pak ,  Seungwon Park ,  Seunghee Jang

IPC: C09K11/88 ,  C09K11/08

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

Abstract: A method of preparing a quantum dot, a quantum dot prepared thereby, and an electronic apparatus including the quantum dot are provided. The method includes: preparing a first solution containing a first element-containing precursor; a preparing a second solution by mixing the first solution with a second element-containing precursor and a third element-containing precursor; and forming a core by heating the second solution. The first element-containing precursor and the second element-containing precursor each independently includes carbon atoms, wherein a number of carbon atoms included in the first element-containing precursor is greater than a number of carbon atoms included in the second element-containing precursor, wherein the first element includes a Group III element other than gallium (Ga), the second element includes Ga, and the third element includes a Group V element.

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：US20230403875A1

公开(公告)日：2023-12-14

申请号：US18106604

申请日：2023-02-07

Applicant: Samsung Display Co., Ltd.

Inventor： Seunghee Jang ,  Kawon Pak ,  Seungwon Park

IPC: H10K50/115 ,  H10K59/38 ,  C09K11/70

CPC classification number: H10K50/115 ,  H10K59/38 ,  C09K11/70 ,  B82Y30/00

Abstract: Embodiments provide a method of preparing a quantum dot, a quantum dot prepared by the method, and an optical member and electronic apparatus that include the quantum dot. The method of preparing the quantum dot includes preparing a first composition which includes a first precursor including a first element, a second precursor including a second element, a third precursor including a third element, a fatty acid, and a solvent; preparing a second composition including a fourth precursor including a fourth element; preparing a first mixture by mixing the first composition with the second composition; and preparing a core by heating the first mixture.

公开(公告)号：US20230329026A1

公开(公告)日：2023-10-12

申请号：US18133383

申请日：2023-04-11

Applicant: Samsung Display Co., Ltd.

Inventor： Seungwon Park ,  Kawon Pak ,  Seunghee Jang ,  Donghee Lee ,  Taekjoon Lee ,  Junehyuk Jung

IPC: H10K50/115 ,  B82Y30/00 ,  B82Y40/00 ,  C09K11/70

CPC classification number: H10K50/115 ,  C09K11/70 ,  B82Y40/00 ,  B82Y30/00

Abstract: An electronic apparatus including the quantum dot, wherein the quantum dot may include a core and a shell covering at least a portion of the core, wherein the core may include indium (In), gallium (Ga), and phosphorus (P), the shell may include a group II-VI semiconductor compound, a group III-V semiconductor compound, a group III-VI semiconductor compound, or a combination thereof, in the core and the shell, the number of moles of Ga relative to the sum of the number of moles of In and the number of moles of Ga (MGa/(MIn+MGa)) may be in a range of about 0.02 to about 0.18, and in the core and the shell, the sum of the number of moles of In and the number of moles of Ga relative to the number of moles of P ((MIn+MGa)/MP) may be in a range of about 1 to about 1.2.

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.