公开(公告)号：US20230313034A1

公开(公告)日：2023-10-05

申请号：US18194764

申请日：2023-04-03

Applicant: Samsung Display Co., Ltd.

Inventor： Sehun Kim ,  Changhee Lee ,  Dukki Kim ,  Wonjun Park ,  Jongwoo Shin ,  Sangyeop Lee ,  Jaekook Ha

IPC: C09K11/08 ,  H10K50/115 ,  H10K50/15 ,  H10K50/16 ,  B82Y30/00 ,  B82Y40/00

CPC classification number: C09K11/0811 ,  H10K50/115 ,  C09K11/0816 ,  H10K50/15 ,  H10K50/16 ,  B82Y30/00 ,  B82Y40/00

Abstract: Embodiments provide a method of preparing a metal oxide composition, a light-emitting device including a metal oxide layer formed using a metal oxide composition prepared by the method, and an electronic apparatus including the light-emitting device. The method includes preparing a first metal oxide particle, and forming a metal oxide particle by adding a halide compound to the first metal oxide particle, and treating the first metal oxide particle with the halide compound at a temperature equal to or less than about 60° C.

公开(公告)号：US11730003B2

公开(公告)日：2023-08-15

申请号：US17560161

申请日：2021-12-22

Applicant: Samsung Display Co., Ltd.

Inventor： Choelmin Jang ,  Byunghyuk Kwon ,  Changhee Lee ,  Myungsoo Huh ,  Cheollae Roh ,  Jaehoon Kim ,  Jeong Hye Choi

IPC: H01L51/50 ,  H10K30/80 ,  C09K11/08 ,  H10K50/15 ,  H10K50/16 ,  H10K50/17 ,  H10K50/86 ,  H10K50/115 ,  H10K59/12 ,  H10K59/38 ,  H10K71/00 ,  B82Y20/00 ,  H10K102/00

CPC classification number: H10K30/865 ,  C09K11/08 ,  H10K50/115 ,  H10K50/15 ,  H10K50/16 ,  H10K50/17 ,  H10K50/171 ,  H10K50/86 ,  H10K50/865 ,  H10K59/12 ,  H10K59/38 ,  H10K71/00 ,  B82Y20/00 ,  H10K2102/00 ,  H10K2102/351

Abstract: A light emitting diode according to embodiments of the present disclosure includes a first electrode, a second electrode opposite the first electrode, an emission layer between the first electrode and the second electrode, the emission layer including a quantum dot, a first charge transfer layer between the first electrode and the emission layer, a second charge transfer layer between the second electrode and the emission layer, and an insulating layer in at least one position between the first charge transfer layer and the emission layer, and/or between the second charge transfer layer and the emission layer, wherein the insulating layer includes an inorganic material. The light emitting diode and a display device including the same show improved life characteristics and emission efficiency properties.

公开(公告)号：US11649402B2

公开(公告)日：2023-05-16

申请号：US17034861

申请日：2020-09-28

Applicant: Samsung Display Co., Ltd. ,  Hannam University Institute for Industry-Academia Cooperation

Inventor： Yunhyuk Ko ,  Kwangsup Lee ,  Prabhakaran Prem ,  Changhee Lee ,  Gyeongju Kim ,  Sinil Choi

IPC: C09K11/88 ,  C09K11/54 ,  H01L51/50 ,  H01L33/50 ,  B82Y40/00 ,  B82Y20/00

CPC classification number: C09K11/88 ,  C09K11/54 ,  H01L33/502 ,  H01L51/5036 ,  B82Y20/00 ,  B82Y40/00

Abstract: A method of preparing a quantum dot, a quantum dot prepared by the method, an optical member including the quantum dot, and an apparatus including the quantum dot. The quantum dot may include: a core including a III-V compound; a first shell surrounding the core and including ZnSe; a second shell surrounding the first shell and including ZnSe1-xSx, wherein x may be a real number greater than 0 and smaller than 1; and a third shell surrounding the second shell and including ZnS. The method may include: forming the first shell from a first material including zinc and a second material including selenium in a solution; forming the second shell by adding to the solution a third material including zinc and a fourth material including selenium and sulfur; and forming the third shell by adding to the solution a fifth material including zinc.

公开(公告)号：US20220115617A1

公开(公告)日：2022-04-14

申请号：US17560161

申请日：2021-12-22

Applicant: Samsung Display Co., Ltd.

Inventor： Choelmin Jang ,  Byunghyuk Kwon ,  Changhee Lee ,  Myungsoo Huh ,  Cheollae Roh ,  Jaehoon Kim ,  Jeong Hye Choi

IPC: H01L51/50 ,  C09K11/08 ,  H01L27/32 ,  H01L51/52 ,  H01L51/56

Abstract: A light emitting diode according to embodiments of the present disclosure includes a first electrode, a second electrode opposite the first electrode, an emission layer between the first electrode and the second electrode, the emission layer including a quantum dot, a first charge transfer layer between the first electrode and the emission layer, a second charge transfer layer between the second electrode and the emission layer, and an insulating layer in at least one position between the first charge transfer layer and the emission layer, and/or between the second charge transfer layer and the emission layer, wherein the insulating layer includes an inorganic material. The light emitting diode and a display device including the same show improved life characteristics and emission efficiency properties.

公开(公告)号：US11239438B2

公开(公告)日：2022-02-01

申请号：US16714389

申请日：2019-12-13

Applicant: Samsung Display Co., Ltd.

Inventor： Choelmin Jang ,  Byunghyuk Kwon ,  Changhee Lee ,  Myungsoo Huh ,  Cheollae Roh ,  Jaehoon Kim ,  Jeong Hye Choi

IPC: H01L51/50 ,  C09K11/08 ,  H01L27/32 ,  H01L51/52 ,  H01L51/56 ,  B82Y20/00

Abstract: A light emitting diode according to embodiments of the present disclosure includes a first electrode, a second electrode opposite the first electrode, an emission layer between the first electrode and the second electrode, the emission layer including a quantum dot, a first charge transfer layer between the first electrode and the emission layer, a second charge transfer layer between the second electrode and the emission layer, and an insulating layer in at least one position between the first charge transfer layer and the emission layer, and/or between the second charge transfer layer and the emission layer, wherein the insulating layer includes an inorganic material. The light emitting diode and a display device including the same show improved life characteristics and emission efficiency properties.

公开(公告)号：US12207548B2

公开(公告)日：2025-01-21

申请号：US17030031

申请日：2020-09-23

Applicant: Samsung Display Co., Ltd.

Inventor： Hyunmi Doh ,  Changhee Lee ,  Myoungjin Park ,  Jaekook Ha

IPC: B82Y40/00 ,  C01G9/02 ,  C09K11/88 ,  H10K50/16 ,  H10K85/60

Abstract: A light-emitting device includes a first electrode, an emission layer, an electron transport layer, a metal-nucleation inducing layer, and a second electrode. The metal-nucleation inducing layer is in direct contact with the second electrode, and includes a metal-nucleation inducing material having at least one metal-nucleation inducing group. The second electrode includes a metal-containing film that is hybridized with the metal-nucleation inducing material. The metal-nucleation inducing group is a π electron-deficient nitrogen-containing C1-C60 cyclic group that is unsubstituted or substituted with at least one R1 or a group represented by one of Formulae 1A to 1E, and does not comprise a group represented by *—C(═O)(OH) and a cyano group. The emission efficiency and/or lifespan of the light-emitting device may be improved because of the metal-nucleation inducing layer.

公开(公告)号：US11955468B2

公开(公告)日：2024-04-09

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 ,  H01L23/00 ,  H01L33/44

CPC classification number: H01L25/167 ,  H01L24/32 ,  H01L24/83 ,  H01L33/44 ,  H01L2224/32137 ,  H01L2224/80143 ,  H01L2224/83085 ,  H01L2224/83896 ,  H01L2924/12041

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.

公开(公告)号：US20230180504A1

公开(公告)日：2023-06-08

申请号：US18070310

申请日：2022-11-28

Applicant: Samsung Display Co., Ltd.

Inventor： Yunhyuk Ko ,  Changhee Lee ,  Yunku Jung ,  Changyeol Han

IPC: H10K50/16 ,  H10K50/115 ,  H10K59/123

CPC classification number: H01L51/5072 ,  H01L51/502 ,  H01L27/3248

Abstract: A light-emitting device and an electronic apparatus including the light-emitting device. 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, wherein the interlayer may include an emission layer and an electron transport layer, the electron transport layer may be between the emission layer and the second electrode, the electron transport layer may include an electron transporting particle, the electron transporting particle may include a core, a first shell covering the core, and a second shell covering the first shell, the first shell may include a first compound, the second shell may include a second compound, the core may include a third compound, and the first compound and the second compound may each independently include an oxide, a chalcogenide, or any combination thereof.

公开(公告)号：US20230045448A1

公开(公告)日：2023-02-09

申请号：US17853872

申请日：2022-06-29

Applicant: Samsung Display Co., Ltd. ,  Hannam University Institute for Industry-Academia Cooperation

Inventor： Yunhyuk Ko ,  Dongryeol Whang ,  Changhee Lee ,  Kwangsup Lee ,  Prem PRABHAKARAN ,  Daeho Hwang

IPC: H01L51/50 ,  C09K11/88 ,  C09K11/74 ,  C09K11/70 ,  C09K11/66 ,  C09K11/62 ,  C09K11/56 ,  C09D11/033 ,  C09D11/03

Abstract: A quantum dot, and an ink composition, a light-emitting device, an optical member, and an apparatus, each including the quantum dot. The quantum dot includes: a nanoparticle; and at least one ligand on a surface of the nanoparticle, wherein the nanoparticle does not include mercury and cadmium, and the at least one ligand includes at least two thiol groups and at least one hydrophilic group.

公开(公告)号：US20230038085A1

公开(公告)日：2023-02-09

申请号：US17849542

申请日：2022-06-24

Applicant: Samsung Display Co., Ltd.

Inventor： Hyunmi Doh ,  Changhee Lee ,  Jingoo Kang ,  Sehun Kim ,  Yonghwi Kim ,  Jonghoon Kim ,  Seunguk Noh ,  Myoungjin Park ,  Yunku Jung

IPC: C01G9/02 ,  H01L51/50 ,  H01L51/56

Abstract: A method of manufacturing an inorganic oxide particle having an inorganic oxide core and a hydroxyl group bonded to a surface thereof includes: preparing a first composition including an inorganic oxide core precursor and a proton supply compound; and heating the first composition. Additional embodiments provide a method of manufacturing an inorganic oxide layer including an inorganic oxide particle manufactured by the method, and a light-emitting device including an inorganic oxide layer manufactured by the method.