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：US20230320117A1

公开(公告)日：2023-10-05

申请号：US18155965

申请日：2023-01-18

Applicant: Samsung Display Co., Ltd.

Inventor： Yunku Jung ,  Yunhyuk Ko ,  Changyeol Han

IPC: H10K50/115 ,  C09K11/88

CPC classification number: H10K50/115 ,  C09K11/883 ,  H10K50/16

Abstract: A light-emitting device including: a first electrode; a second electrode facing the first electrode; and an interlayer located between the first electrode and the second electrode, wherein the interlayer includes an emission layer, and wherein the emission layer includes a first quantum dot and a second quantum dot, wherein an energy band gap of the first quantum dot is greater than an energy band gap of the second quantum dot, and wherein the first quantum dot emits light of a partial wavelength region of a visible light region.

公开(公告)号：US11697763B2

公开(公告)日：2023-07-11

申请号：US17356463

申请日：2021-06-23

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Yunku Jung ,  Hyekyoung Choi ,  Sungwoon Kim ,  Jaekook Ha

IPC: C09K11/62 ,  C09K11/56 ,  C09K11/88 ,  C09K11/70 ,  C09K11/02 ,  C09K11/08 ,  B82Y20/00 ,  B82Y40/00 ,  H10K50/115

CPC classification number: C09K11/626 ,  C09K11/025 ,  C09K11/0883 ,  C09K11/565 ,  C09K11/70 ,  C09K11/883 ,  B82Y20/00 ,  B82Y40/00 ,  H10K50/115

Abstract: A quantum dot composition may include: a first solvent; a second solvent different from the first solvent; first quantum dots including a hole-transporting ligand; and second quantum dots including an electron-transporting ligand, wherein the first solvent and the second solvent are miscible solvents having different boiling points from each other, a degree of dispersion of the first quantum dots is greater in the first solvent than in the second solvent, and a degree of dispersion of the second quantum dots is greater in the second solvent than in the first solvent.

公开(公告)号：US11616208B2

公开(公告)日：2023-03-28

申请号：US16855985

申请日：2020-04-22

Applicant: Samsung Display Co., Ltd.

Inventor： Minki Nam ,  Yunku Jung ,  Jaehong Park ,  Dukki Kim ,  Sungwoon Kim

IPC: H01L51/56 ,  H01L51/50 ,  H01L51/00 ,  H05B33/14 ,  C09K11/70 ,  C09K11/02 ,  H05B33/20

Abstract: A quantum dot composition includes quantum dots and a leveling agent, wherein the leveling agent includes a first repeating unit represented by Formula 1 and a second repeating unit represented by Formula 2: A light-emitting device and a method of manufacturing the same are also provided.