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：US12258504B2

公开(公告)日：2025-03-25

申请号：US18407326

申请日：2024-01-08

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Changhee Lee ,  Dukki Kim ,  Hyojin Ko ,  Sehun Kim ,  Jaehoon Kim ,  Hyunmi Doh ,  Yunku Jung ,  Jaekook Ha

IPC: C09K11/06 ,  C07C43/10 ,  C07C53/00 ,  C07C63/08 ,  C07C211/09 ,  C07C309/04 ,  C07C309/30 ,  C07F9/54 ,  H10K50/115 ,  H10K71/00 ,  H10K71/15 ,  H10K85/60

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 containing a polar solvent dissociative functional group, and a tail portion connected to the head portion. A quantum dot composition according to an embodiment is used to form an emission layer of a light emitting element to enhance luminous efficiency of the light emitting element including an emission layer formed through the quantum dot composition.

公开(公告)号：US12173209B2

公开(公告)日：2024-12-24

申请号：US17450252

申请日：2021-10-07

Applicant: Samsung Display Co., Ltd. ,  NIC LAB Co.,LTD.

Inventor： Yunku Jung ,  Changhee Lee ,  Hanyoung Choi ,  Yunhyuk Ko ,  Changho Cho ,  Jaekook Ha

IPC: C09K11/02 ,  B82Y20/00 ,  B82Y40/00 ,  C09D5/22 ,  C09D11/037 ,  C09D11/50 ,  C09D11/52 ,  C09K11/08 ,  C09K11/88 ,  H01L33/50 ,  H10K50/115

Abstract: A quantum dot includes: a nanoparticle; and a ligand represented by Formula 1 on a surface of the nanoparticle: A1 is an anchoring group linked to the surface of the nanoparticle, and A1 may be selected from groups represented by Formulae A-1 to A-4: wherein * in Formulae A-1 to A-4 indicates a binding site to a neighboring atom.

公开(公告)号：US12139652B2

公开(公告)日：2024-11-12

申请号：US17450252

申请日：2021-10-07

Applicant: Samsung Display Co., Ltd. ,  NIC LAB Co.,LTD.

Inventor： Yunku Jung ,  Changhee Lee ,  Hanyoung Choi ,  Yunhyuk Ko ,  Changho Cho ,  Jaekook Ha

IPC: C09K11/02 ,  B82Y20/00 ,  B82Y40/00 ,  C09D5/22 ,  C09D11/037 ,  C09D11/50 ,  C09D11/52 ,  C09K11/08 ,  C09K11/88 ,  H01L33/50 ,  H10K50/115

Abstract: A quantum dot includes: a nanoparticle; and a ligand represented by Formula 1 on a surface of the nanoparticle: A1 is an anchoring group linked to the surface of the nanoparticle, and A1 may be selected from groups represented by Formulae A-1 to A-4: wherein * in Formulae A-1 to A-4 indicates a binding site to a neighboring atom.

公开(公告)号：US12129416B2

公开(公告)日：2024-10-29

申请号：US17219653

申请日：2021-03-31

Applicant: Samsung Display Co., Ltd.

Inventor： Changhee Lee ,  Yunku Jung ,  Hyunmi Doh ,  Hyojin Ko ,  Dukki Kim ,  Sehun Kim ,  Jaehoon Kim ,  Jaekook Ha

IPC: C09K11/06 ,  B82Y20/00 ,  B82Y30/00 ,  B82Y40/00 ,  H10K50/115 ,  H10K102/00

CPC classification number: C09K11/06 ,  H10K50/115 ,  B82Y20/00 ,  B82Y30/00 ,  B82Y40/00 ,  C09K2211/10 ,  H10K2102/00

Abstract: A quantum dot composition includes a quantum dot having a surface to which a ligand is bonded, and a photoacid generator. 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, thereby improving luminous efficiency of the light emitting element.

公开(公告)号：US11917845B2

公开(公告)日：2024-02-27

申请号：US17336011

申请日：2021-06-01

Applicant: Samsung Display Co., Ltd.

Inventor： Sooho Lee ,  Changhee Lee ,  Hyunmi Doh

IPC: H10K50/16 ,  C09K11/02 ,  C09K11/54 ,  C09K11/56 ,  C09K11/55 ,  C09K11/06 ,  H10K50/115 ,  H10K50/828 ,  H10K71/00 ,  H10K71/15 ,  H10K71/13 ,  H10K102/00

CPC classification number: H10K50/16 ,  C09K11/02 ,  C09K11/06 ,  C09K11/54 ,  C09K11/55 ,  C09K11/565 ,  H10K50/115 ,  H10K50/828 ,  H10K71/00 ,  H10K71/135 ,  H10K71/15 ,  H10K2102/331

Abstract: Provided are a light-emitting device, an electronic apparatus including the same, and a method of manufacturing the light-emitting device, wherein 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 includes an emission layer and an electron transport layer, the electron transport layer is between the emission layer and the second electrode, and the electron transport layer includes an electron transport particle, the electron transport particle includes a core and a shell covering the core, the core includes an oxide, a chalcogenide, or any combination thereof, and the shell includes a chalcogenide, the chalcogenide of the core being the same as or different from the chalcogenide of the shell.

公开(公告)号：US11910703B2

公开(公告)日：2024-02-20

申请号：US17152640

申请日：2021-01-19

Applicant: Samsung Display Co., Ltd.

Inventor： Changhee Lee ,  Yunku Jung ,  Hyojin Ko ,  Dukki Kim ,  Sehun Kim ,  Jaehoon Kim ,  Hyunmi Doh ,  Jaekook Ha

IPC: H01L51/00 ,  H10K85/30 ,  C09K11/06 ,  H10K50/115 ,  H10K71/00

CPC classification number: H10K85/361 ,  C09K11/06 ,  H10K85/381 ,  C09K2211/10 ,  C09K2211/188 ,  H10K50/115 ,  H10K71/00

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, a connecting portion connected to the head portion and including a metal, and a tail portion coordinated to the metal of the connecting portion. The quantum dot composition according to the present embodiments is used to form an emission layer of a light emitting element, and may thus increase service life and luminous efficiency of the light emitting element including the emission layer formed using the quantum dot composition.

公开(公告)号：US11870001B2

公开(公告)日：2024-01-09

申请号：US17443402

申请日：2021-07-26

Applicant: Samsung Display Co., Ltd. ,  Research & Business Foundation Sungkyunkwan University

Inventor： Sooho Lee ,  Minki Nam ,  Sungwoon Kim ,  Jeongwoo Park ,  Wanki Bae ,  Changhee Lee ,  Byeongguk Jeong

IPC: H01L31/12 ,  H01L31/0384 ,  H01L31/103 ,  H01L31/18 ,  H10K50/115 ,  H10K59/60 ,  H10K71/00 ,  B82Y40/00 ,  B82Y20/00

CPC classification number: H01L31/125 ,  H01L31/03845 ,  H01L31/1032 ,  H01L31/1035 ,  H01L31/184 ,  H01L31/1828 ,  H10K50/115 ,  H10K59/60 ,  H10K71/00 ,  B82Y20/00 ,  B82Y40/00

Abstract: An electronic device includes a semiconductor nanoparticle, and a method of manufacturing the semiconductor nanoparticle is additionally provided. The semiconductor nanoparticle includes: a core including a first element; and a shell covering at least a portion of a surface of the core and including a second element and a third element, wherein the first element, the second element, and the third element are different from each other, and the first element and the second element are chemically bonded to each other on the at least a portion of the surface of the core.

公开(公告)号：US11844274B2

公开(公告)日：2023-12-12

申请号：US16721613

申请日：2019-12-19

Applicant: Samsung Display Co., Ltd. ,  Seoul National University R&DB Foundation

Inventor： SooYoung Park ,  Sehun Kim ,  JiEon Kwon ,  Hyojeong Kim ,  ChiHyun Ryoo ,  Changhee Lee ,  Hyein Jeong ,  Jongseok Han

IPC: H10K85/60 ,  H10K50/11

CPC classification number: H10K85/6572 ,  H10K85/631 ,  H10K50/11

Abstract: An organic electroluminescence device of an embodiment includes oppositely disposed first electrode and second electrode, and a plurality of organic layers disposed between the first electrode and the second electrode, wherein at least one among the organic layers includes a compound represented by Formula 1 below. Improved emission efficiency and color purity properties may be shown.

公开(公告)号：US11765954B2

公开(公告)日：2023-09-19

申请号：US17354210

申请日：2021-06-22

Applicant: Samsung Display Co., Ltd.

Inventor： Jingoo Kang ,  Sungwoon Kim ,  Changhee Lee

IPC: H10K59/35 ,  H10K71/00 ,  H10K50/115 ,  H10K50/155 ,  H10K50/165

CPC classification number: H10K59/35 ,  H10K59/352 ,  H10K71/00 ,  H10K50/115 ,  H10K50/155 ,  H10K50/165

Abstract: A display device including a first light emitting element including a first emission layer and a first charge transport layer adjacent to the first emission layer, the first emission layer including a first quantum dot to emit first light, and a second light emitting element including a second emission layer and a second charge transport layer adjacent to the second emission layer, the second emission layer including a second quantum dot to emit second light that is longer in wavelength than the first light. The first charge transport layer includes a first metal oxide. The second charge transport layer includes a second metal oxide different from the first metal oxide.