公开(公告)号：US20250084307A1

公开(公告)日：2025-03-13

申请号：US18825620

申请日：2024-09-05

Applicant: Samsung Display Co., LTD.

Inventor： Youngsik KIM ,  Sungjae KIM ,  Bitna YOON ,  Donghee LEE ,  Taekjoon LEE ,  Junehyuk JUNG

IPC: C09K11/62 ,  B82Y20/00 ,  B82Y40/00 ,  C09K11/02 ,  H10K59/38

Abstract: A quantum dot includes a core including copper, indium, gallium, silver, and sulfur and a shell surrounding the core and including zinc sulfide (ZnS). A display device includes: a base layer; a circuit layer on the base layer; and a display element layer on the circuit layer, the display element layer including: a first electrode; a second electrode; and a light emitting layer between the first electrode and the second electrode and including the quantum dot.

公开(公告)号：US20250101299A1

公开(公告)日：2025-03-27

申请号：US18889807

申请日：2024-09-19

Applicant: Samsung Display Co., Ltd.

Inventor： Youngsik KIM ,  Sungjae KIM ,  Hongrae KIM ,  Bitna YOON ,  Donghee LEE ,  Taekjoon LEE ,  Junehyuk JUNG

IPC: C09K11/62 ,  B82Y20/00 ,  B82Y40/00 ,  C01G15/00 ,  G02F1/13357

Abstract: A quantum dot includes copper (Cu), a Group III element, and a Group VI element, wherein the quantum dot further includes a halogen component that is an iodide ion, a bromide ion, a chloride ion, a fluoride ion, or a combination thereof. A molar ratio of the halogen component to the copper (Cu) and a molar ratio of the halogen component to the Group III element is each independently in a range of about 0.01 to about 0.5, and a full width at half maximum (FWHM) of a photoluminescence spectrum of the quantum dot is equal to or less than about 80 nm.

公开(公告)号：US20240218249A1

公开(公告)日：2024-07-04

申请号：US18536646

申请日：2023-12-12

Applicant: Samsung Display Co., LTD.

Inventor： Seungwon PARK ,  Sungjae KIM ,  Youngsik KIM ,  Bitna YOON ,  Donghee LEE ,  Junehyuk JUNG

IPC: C09K11/88 ,  C09K11/02 ,  C09K11/56 ,  C09K11/62 ,  C09K11/70 ,  H10K50/115

CPC classification number: C09K11/883 ,  C09K11/025 ,  C09K11/565 ,  C09K11/623 ,  C09K11/70 ,  H10K50/115 ,  B82Y20/00

Abstract: A quantum dot includes a core and a first shell covering at least a portion of the core. The core includes indium (In), a first element, and phosphorus (P). The first shell includes a second element and a third element, the first element and the second element are each independently a Group III element, the third element is a Group VI element. The quantum dot satisfies Inequality 1 below:










(


M
1

+

M
2

+

M
3


)

/

M
In


>
7

,










wherein Inequality 1, MIn denotes the number of moles of In in the core and the first shell, M1 denotes the number of moles of the first element in the core and the first shell, M2 denotes the number of moles of the second element in the core and the first shell, and M3 denotes the number of moles of the third element in the core and the first shell.

公开(公告)号：US20240101896A1

公开(公告)日：2024-03-28

申请号：US18362825

申请日：2023-07-31

Applicant: Samsung Display Co., Ltd.

Inventor： Youngsik KIM ,  Sungjae KIM ,  Seung-Won PARK ,  Bitna YOON ,  Donghee LEE ,  Junehyuk JUNG

IPC: C09K11/70 ,  C09K11/02 ,  C09K11/56 ,  C09K11/88 ,  H10K59/38

CPC classification number: C09K11/70 ,  C09K11/02 ,  C09K11/565 ,  C09K11/883 ,  H10K59/38

Abstract: A quantum dot includes a core including InP, a first shell around (e.g., surrounding) the core and including ZnTeSe, a second shell around (e.g., surrounding) the first shell and including ZnSe, and a third shell around (e.g., surrounding) the second shell and including ZnS, wherein the ratio of the number of moles of the Te in the first shell to the number of moles of the P in the core is about 0.02 to about 0.90.