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

IPC: C09K11/88 ,  C09K11/08

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.

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：US20240099044A1

公开(公告)日：2024-03-21

申请号：US18299825

申请日：2023-04-13

Applicant: Samsung Display Co., Ltd.

Inventor： Dongsun Yoo ,  Gyubong Kim ,  Sanghee Yu ,  Sehun Kim ,  Jihye Kim ,  Hoilim Kim ,  Yohan Suh ,  Yunku Jung

IPC: H10K50/115 ,  C09D5/22 ,  C09K11/08 ,  C09K11/70

CPC classification number: H10K50/115 ,  C09D5/22 ,  C09K11/0811 ,  C09K11/70

Abstract: Embodiments provide a mixed solvent for a quantum dot ink composition, wherein the mixed solvent includes at least two solvents, an R1 value of the mixed solvent is greater than or equal to about 7.3 Mpa0.5, an R2 value of the mixed solvent is greater than or equal to about 5.0 Mpa0.5, and a molar volume of the mixed solvent is greater than or equal to about 160 cm3/mol.

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

IPC: B82Y30/00 ,  B82Y40/00 ,  H10K50/115 ,  H10K50/16 ,  C09D5/22 ,  H10K50/15

CPC classification number: H10K50/115 ,  B82Y30/00 ,  B82Y40/00 ,  C09D5/22 ,  H10K50/15 ,  H10K50/16

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.

公开(公告)号：US20230371296A1

公开(公告)日：2023-11-16

申请号：US18191783

申请日：2023-03-28

Applicant: Samsung Display Co., Ltd.

Inventor： Yunku Jung ,  Yohan Suh ,  Chulsoon Park

IPC: H10K50/115 ,  C09K11/70 ,  C09K11/88 ,  C09K11/56

CPC classification number: H10K50/115 ,  C09K11/70 ,  C09K11/883 ,  C09K11/565 ,  B82Y40/00

Abstract: A quantum dot composition includes a first quantum dot and a second quantum dot, wherein the first quantum dot includes a first core and a first shell surrounding at least a portion of the first core, the first shell includes a first metal and a first chalcogenide, the second quantum dot includes a second core and a second shell surrounding at least a portion of the second core, the second shell includes a second metal and a second chalcogenide, and a first molar ratio of the first metal to the first chalcogenide in the first quantum dot is different from a second molar ratio of the second metal to the second chalcogenide in the second quantum dot.

公开(公告)号：US20230227722A1

公开(公告)日：2023-07-20

申请号：US18155972

申请日：2023-01-18

Applicant: Samsung Display Co., Ltd.

Inventor： Yunku Jung ,  Yunhyuk Ko ,  Yohan Suh ,  Changyeol Han

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

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

Abstract: A quantum dot composition, including a first quantum dot and a second quantum dot, wherein a valence band maximum energy level of the first quantum dot is different from a valence band maximum energy level of the second quantum dot, as determined by ambient photoelectron spectroscopy, and an energy band gap of the first quantum dot is identical to an energy band gap of the second quantum dot, as determined by ultraviolet-visible spectroscopy.