公开(公告)号：US20230209860A1

公开(公告)日：2023-06-29

申请号：US18084837

申请日：2022-12-20

Applicant: Samsung Display Co., Ltd.

Inventor： Yunku JUNG ,  Yunhyuk KO ,  Hyekyoung CHOI ,  Changyeol HAN

IPC: H10K50/16 ,  H10K50/15 ,  H10K50/115 ,  C09K11/89 ,  C09K11/88 ,  C09K11/74 ,  C09K11/70 ,  C09K11/64 ,  C09K11/62 ,  C09K11/58 ,  C09K11/08

CPC classification number: H10K50/16 ,  H10K50/15 ,  H10K50/115 ,  C09K11/89 ,  C09K11/883 ,  C09K11/7442 ,  C09K11/7492 ,  C09K11/70 ,  C09K11/64 ,  C09K11/62 ,  C09K11/582 ,  C09K11/0811 ,  H10K2101/30

Abstract: A light-emitting device and an electronic apparatus including the light-emitting device are provided. The light-emitting device includes a first electrode, a second electrode facing the first electrode, and an interlayer between the first electrode and the second electrode. The interlayer includes an emission layer, a hole transport region between the first electrode and the emission layer, and an electron transport region between the emission layer and the second electrode. The emission layer includes a first quantum dot, the hole transport region includes a second quantum dot, and the electron transport region includes a third quantum dot. The first quantum dot to the third quantum dot may be understood by referring to the description of the first quantum dot to the third quantum dot provided herein.

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：US20220098481A1

公开(公告)日：2022-03-31

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 ,  H01L51/00

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.