公开(公告)号：US20220204837A1

公开(公告)日：2022-06-30

申请号：US17561604

申请日：2021-12-23

Applicant: Samsung Display Co., Ltd.

Inventor： Yunku JUNG ,  Hyunmi DOH ,  Jaekook HA ,  Sungwoon KIM ,  Jongwoo SHIN ,  Hyekyoung CHOI

IPC: C09K11/02 ,  C09K11/54 ,  C01G9/02 ,  C09D11/50 ,  C09D11/037 ,  C09D11/033 ,  H01L51/50

Abstract: A nano composite, a nanoparticle ink composition including a solvent and the nanocomposite, and a light-emitting device including a first electrode, a second electrode facing the first electrode, and an interlayer between the first electrode and the second electrode, wherein the interlayer includes an emission layer, and at least one layer included in the interlayer is made from the nanoparticle ink composition. The nano composite includes: a metal oxide nanoparticle; and a chelating ligand bonded to a surface of the nanoparticle and including a cyclic moiety.

公开(公告)号：US20210371737A1

公开(公告)日：2021-12-02

申请号：US17219442

申请日：2021-03-31

Applicant: Samsung Display Co., Ltd.

Inventor： Yunku JUNG ,  Yunhyuk KO ,  Minki NAM ,  Sungwoon KIM ,  Junwoo PARK ,  Sooho LEE

IPC: C09K11/06 ,  H01L51/50

Abstract: A quantum dot composition includes a quantum dot and a ligand bonded to a surface of the quantum dot, wherein the ligand includes a head portion bonded to the surface of the quantum dot, and a tail portion containing a crosslinkable functional group. The quantum dot composition according to one or more embodiments may be applied to an emission layer of a light emitting element and a display device to improve luminous efficiency and service life of the light emitting element and the display device.

公开(公告)号：US20210301202A1

公开(公告)日：2021-09-30

申请号：US17203538

申请日：2021-03-16

Applicant: Samsung Display Co., Ltd. ,  Hongik University Industry-Academia Cooperation Foundation

Inventor： Yunhyuk KO ,  Heesun YANG ,  Changhee LEE ,  Kyunghye KIM ,  Sungwoon KIM ,  Jungho JO

IPC: C09K11/62 ,  H01L51/50 ,  C09K11/70 ,  C09K11/08 ,  C09K11/56 ,  H05B33/14 ,  C01G9/08 ,  C01B19/04 ,  C01G15/00

Abstract: Provided are a quantum dot, a method of preparing the quantum dot, an optical member including the quantum dot, and an electronic device including the quantum dot. The quantum dot includes a core including indium (In), A1, and A2; and a shell covering the core. A1 is a Group V element, A2 is a Group III element other than indium, and the core includes a first region, and a second region covering the first region. The first region does not include A2, and includes indium and A1, and the second region includes indium, A1, and A2, and indium and A2 are alloyed with each other in the second region.

公开(公告)号：US20210035962A1

公开(公告)日：2021-02-04

申请号：US16932591

申请日：2020-07-17

Applicant: Samsung Display Co., Ltd.

Inventor： Yunku JUNG ,  Sungwoon KIM ,  Changhee LEE ,  Jaekook HA ,  Yunhyuk KO ,  Jaehoon KIM ,  Minki NAM ,  Hyunmi DOH ,  Myoungjin PARK ,  Jae Hong PARK ,  Junwoo PARK

IPC: H01L25/16 ,  H01L33/44 ,  H01L23/00

Abstract: Provided is a light emitting element according to embodiments which includes a body including a semiconductor layer and an active layer, and a ligand including a head portion bonded to a surface of the body, an end portion spaced apart from the body, and having a positive or a negative charge, and a chain portion connecting the head portion and the end portion.