公开(公告)号：US20210257573A1

公开(公告)日：2021-08-19

申请号：US17171893

申请日：2021-02-09

Applicant: Samsung Display Co., Ltd. ,  Research & Business Foundation SUNGKYUNKWAN UNIVERSITY

Inventor： MINKI NAM ,  SUNGWOON KIM ,  YUNHYUK KO ,  Wan Ki BAE ,  SOOHO LEE ,  Byeong Guk JEONG ,  YUNKU JUNG

IPC: H01L51/50 ,  C09K11/88 ,  C09K11/08

Abstract: A quantum dot includes a core and a plurality of shell layers surrounding the core. The core has a band gap less than that of the outermost shell layer, and the outermost shell layer has a band gap less than that of a second shell layer. Thus, a light emitting device including the quantum dot according to an embodiment may have an improved lifespan of the device and excellent luminous efficiency characteristics.

公开(公告)号：US20240199949A1

公开(公告)日：2024-06-20

申请号：US18535254

申请日：2023-12-11

Applicant: Samsung Display Co., LTD.

Inventor： SOOHO LEE ,  YUNHYUK KO ,  Seonhui BAEK

IPC: C09K11/06 ,  H10K50/115

CPC classification number: C09K11/06 ,  H10K50/115 ,  H10K50/16

Abstract: A light-emitting device includes a first electrode, an electron transport layer disposed on the first electrode, a light-emitting layer disposed on the electron transport layer, a hole transport layer disposed on the light-emitting layer, and a second electrode disposed on the hole transport layer. The light-emitting layer includes quantum dots, and metal thiolate carboxylate ligands are disposed on surfaces of the quantum dots.

公开(公告)号：US20250063885A1

公开(公告)日：2025-02-20

申请号：US18750963

申请日：2024-06-21

Applicant: Samsung Display Co., LTD.

Inventor： YUNKU JUNG ,  SOOHO LEE ,  Jungho JO ,  Chang Yeol HAN ,  YUNHYUK KO ,  SEHUN KIM

IPC: H10K50/16 ,  C09D11/037 ,  C09K11/06 ,  H10K50/115 ,  H10K50/165 ,  H10K85/30

Abstract: A light emitting element of an embodiment includes a first electrode, a hole transport region on the first electrode, an emission layer on the hole transport region, an electron transport region on the emission layer, and a second electrode on the electron transport region, the electron transport region includes a nanoparticle including a nanoparticle core and a ligand, the nanoparticle core includes a core compound represented by Formula 1, and the ligand is bonded to the surface of the nanoparticle core and represented by Formula 2 or Formula 3.

公开(公告)号：US20250075124A1

公开(公告)日：2025-03-06

申请号：US18796960

申请日：2024-08-07

Applicant: Samsung Display Co., Ltd.

Inventor： Jungho JO ,  SANGYEOP LEE ,  SOOHO LEE ,  YUNKU JUNG ,  Chang Yeol HAN

IPC: C09K11/66 ,  B82Y30/00 ,  C09D11/38 ,  C09K11/02 ,  H10K50/115 ,  H10K50/16 ,  H10K50/17 ,  H10K102/00

Abstract: A light-emitting element includes a first electrode, a functional layer disposed on the first electrode, and a second electrode disposed on the functional layer, wherein the functional layer includes a nanoparticle, the nanoparticle includes a core and a ligand, the core includes at least one of a first core compound represented by Formula 1 below, a second core compound represented by Formula 2 below, or a third core compound represented by Formula 3 below, and thus the light-emitting element has improved lifespan and efficiency. Sn4+1-xSn2+xO2-x  Formula 1 Sn4+1-yCu+2yO2-y  Formula 2 Sn4+1-zNi2+zO2-z  Formula 3

公开(公告)号：US20240268218A1

公开(公告)日：2024-08-08

申请号：US18516015

申请日：2023-11-21

Applicant: Samsung Display Co., Ltd.

Inventor： SOOHO LEE ,  Jungho JO ,  YUNHYUK KO ,  Yun Ku JUNG

IPC: H10K85/30 ,  C07F3/06

CPC classification number: H10K85/381 ,  C07F3/06 ,  H10K50/16

Abstract: A metal oxide nanoparticle includes a compound represented by Chemical Formula 1 and an alkyl amine ligand having 8 to 18 carbon atoms positioned on a surface of the compound.




In Chemical Formula 1, M may be one selected from among Ca, Zr, Al, Li, Mg, Ni, Y, W, Co, and Ga.