公开(公告)号：US20250101297A1

公开(公告)日：2025-03-27

申请号：US18883409

申请日：2024-09-12

Applicant: Samsung Display Co., Ltd.

Inventor： SUNGJAE KIM ,  Youngsik KIM ,  Bitna YOON ,  DONGHEE LEE ,  TAEKJOON LEE ,  JUNEHYUK JUNG

IPC: C09K11/62 ,  C09K11/02 ,  C09K11/58

Abstract: A quantum dot includes a core containing a first semiconductor nanocrystal, a first shell around (e.g., surrounding) the core and containing a second semiconductor nanocrystal different from the first semiconductor nanocrystal, and a second shell around (e.g., surrounding) the first shell and containing a third semiconductor nanocrystal different from the first semiconductor nanocrystal and the second semiconductor nanocrystal, wherein the core has a band gap of about 1.5 eV to about 3.3 eV, a band gap of the second shell is greater than a band gap of the core and is about 3.54 eV or less, and a band gap of the first shell is greater than a band gap of the core and smaller than a band gap of the second shell.

公开(公告)号：US20220072502A1

公开(公告)日：2022-03-10

申请号：US17236985

申请日：2021-04-21

Applicant: Samsung Display Co., Ltd.

Inventor： DONGHEE LEE ,  CHUL SOON PARK ,  JUNGHOON SONG

IPC: B01J19/12 ,  B01J19/00 ,  H01F7/02 ,  H05K9/00 ,  B01F13/08 ,  B01F15/06

Abstract: A stirrer includes a magnetic bar and a microwave absorbing layer around the magnetic bar. The stirrer absorbs a microwave and converts the microwave to thermal energy to heat the mixed solution reactant.

公开(公告)号：US20240166944A1

公开(公告)日：2024-05-23

申请号：US18446629

申请日：2023-08-09

Applicant: Samsung Display Co., Ltd.

Inventor： SUNGJAE KIM ,  Youngsik KIM ,  SEUNG-WON PARK ,  Bitna YOON ,  DONGHEE LEE ,  JUNEHYUK JUNG

IPC: C09K11/62 ,  C09K11/64 ,  G02F1/01

CPC classification number: C09K11/621 ,  C09K11/64 ,  G02F1/01 ,  H10K50/115

Abstract: Embodiments provide a quantum dot, a method of preparing the quantum dot, and a display device including the quantum dot. The quantum dot includes a core including zinc (Zn), tin (Sn), and phosphorous (P), and a shell surrounding the core, wherein a molar ratio of the number of moles of zinc to a number of moles of tin is in a range of about 0.1 to about 0.2.

公开(公告)号：US20230285925A1

公开(公告)日：2023-09-14

申请号：US18097701

申请日：2023-01-17

Applicant: Samsung Display Co., Ltd.

Inventor： DONGHEE LEE ,  JAEBOK CHANG ,  SUNGJAE KIM ,  JUO NAM ,  SEUNG-WON PARK ,  JUNEHYUK JUNG

IPC: B01J19/00 ,  B01J19/06 ,  B01J19/02

CPC classification number: B01J19/0013 ,  B01J19/06 ,  B01J19/02 ,  B01J2219/00141 ,  B01J2219/0263 ,  B01J2219/0254 ,  B01J2219/0295 ,  B82Y40/00

Abstract: A quantum dot synthesizing vessel includes an accommodation part which accommodates a reaction mixture therein, and an outer part which includes a microwave absorbing material and covers the accommodation part, where a plurality of openings exposing at least a portion of the accommodation part is defined in the outer part.

公开(公告)号：US20250101298A1

公开(公告)日：2025-03-27

申请号：US18758011

申请日：2024-06-28

Applicant: Samsung Display Co., Ltd.

Inventor： SUNGJAE KIM ,  Youngsik KIM ,  Hongrae KIM ,  Bitna YOON ,  DONGHEE LEE ,  TAEKJOON LEE ,  JUNEHYUK JUNG

IPC: C09K11/62 ,  C09K11/58 ,  H01L33/50 ,  H10K50/115 ,  H10K50/155

Abstract: Embodiments provide a quantum dot, a method for preparing a quantum dot, and a light emitting element including the quantum dot. The method for preparing a quantum dot includes forming a core including a copper atom, an indium atom, a gallium atom, and a sulfur atom, and forming a shell surrounding the core by reacting the surface of the core with hydrofluoric acid, a Group II element precursor, and a Group VI element precursor.

公开(公告)号：US20250084306A1

公开(公告)日：2025-03-13

申请号：US18774800

申请日：2024-07-16

Applicant: Samsung Display Co., Ltd.

Inventor： JUNEHYUK JUNG ,  SUNGJAE KIM ,  Youngsik KIM ,  Bitna YOON ,  DONGHEE LEE ,  TAEKJOON LEE

IPC: C09K11/62 ,  C09K11/02 ,  C09K11/56

Abstract: A method for preparing a quantum dot and a quantum dot are provided. The method for preparing a quantum dot includes supplying a first mixture including a first precursor containing gallium oleate, a second precursor containing indium oleate, and a third precursor containing a sulfur atom, forming a second mixture by adding a first solvent to the first mixture, and forming a fourth mixture including a core containing a copper atom, an indium atom, a gallium atom, and a sulfur atom by adding a third mixture containing copper to the second mixture.

公开(公告)号：US20250031492A1

公开(公告)日：2025-01-23

申请号：US18663572

申请日：2024-05-14

Applicant: Samsung Display Co., LTD.

Inventor： SEUNGMIN SONG ,  HYE-JIN OH ,  DONGHEE LEE ,  JONGKAP JO ,  KYUHYEONG CHEON ,  SEOYOUNG CHOI

IPC: H01L33/44 ,  H01L25/075

Abstract: Embodiments provide a window and a display device including the window. The window includes a substrate; at least one light control layer disposed on the substrate and, which controls light having a wavelength of about 280 nm or less; and a coating layer disposed on the at least one light control layer.

公开(公告)号：US20240174920A1

公开(公告)日：2024-05-30

申请号：US18452406

申请日：2023-08-18

Applicant: Samsung Display Co., Ltd.

Inventor： JUNEHYUK JUNG ,  SUNGJAE KIM ,  Youngsik KIM ,  SEUNG-WON PARK ,  Bitna YOON ,  DONGHEE LEE

IPC: C09K11/62 ,  C09K11/58 ,  H10K50/15

CPC classification number: C09K11/623 ,  C09K11/584 ,  H10K50/15

Abstract: A method for preparing a quantum dot includes supplying a first mixture including a first precursor material including a silver precursor, an indium precursor, a first gallium precursor, and a first solvent including oleylamine, trioctylphosphine oxide, and trioctylamine, adding a first sulfur precursor to the first mixture to form cores including silver, indium, gallium, and sulfur, reacting the cores with a second precursor material including a second sulfur precursor and a second gallium precursor to form a first shell around each of the cores, wherein the cores including the first shells comprise first particles, and adding a first element precursor and a second element precursor to a second mixture, the second mixture including the first particles and a second solvent, to form a second shell around each of the first shells.

公开(公告)号：US20240150651A1

公开(公告)日：2024-05-09

申请号：US18365337

申请日：2023-08-04

Applicant: Samsung Display Co., Ltd.

Inventor： SEUNG-WON PARK ,  SUNGJAE KIM ,  Youngsik KIM ,  Bitna YOON ,  DONGHEE LEE ,  JUNEHYUK JUNG

IPC: C09K11/88 ,  C09K11/08 ,  H10K59/35 ,  H10K59/38

CPC classification number: C09K11/883 ,  C09K11/0883 ,  H10K59/352 ,  H10K59/38 ,  B82Y20/00

Abstract: Embodiments provide a quantum dot that includes a core including zinc (Zn), tin (Sn) and phosphorus (P), and a shell surrounding the core, wherein a molar ratio of a number of moles of zinc to a number of moles of tin is in a range of about 0.1 to about 2. The quantum dots have high luminous efficiency and color purity.