公开(公告)号：US12163036B2

公开(公告)日：2024-12-10

申请号：US17025399

申请日：2020-09-18

Applicant: Samsung Display Co., Ltd.

Inventor： Junbo Sim ,  Hyojin Ko ,  Dukki Kim ,  Jonghyuk Kang ,  Changhee Lee ,  Jaehoon Jung ,  Jaekook Ha

IPC: C09D11/36 ,  C08G69/48 ,  C08L75/16 ,  C09D11/326 ,  H01L31/18

Abstract: Provided are an ink composition, a light-emitting apparatus using the ink composition, and a method of manufacturing the light-emitting apparatus. The ink composition may include a light-emitting device, a solvent, and an organic thickener, and the organic thickener is a polymeric compound including at least one group represented by Formula 1: wherein in Formula 1, X, R1, n1, and R2 may respectively be understood by referring to the descriptions of X, R1, n1, and R2 provided in the detailed description.

公开(公告)号：US20240206219A1

公开(公告)日：2024-06-20

申请号：US18465289

申请日：2023-09-12

Applicant: Samsung Display Co., Ltd.

Inventor： Jonghoon Kim ,  Changhee Lee ,  Jingoo Kang ,  Sehun Kim ,  Yonghwi Kim ,  Myoungjin Park ,  Jongwoo Shin ,  Juyon Lee ,  Jaekook Ha

IPC: H10K50/16 ,  C09K11/02 ,  C09K11/54 ,  C09K11/88 ,  H10K50/115 ,  H10K71/15

CPC classification number: H10K50/16 ,  C09K11/02 ,  C09K11/54 ,  C09K11/88 ,  H10K50/115 ,  H10K71/15

Abstract: An electron transport layer including a mixed composition including a solvent, a metal oxide, and a metal halogen compound.

公开(公告)号：US11959001B2

公开(公告)日：2024-04-16

申请号：US17212630

申请日：2021-03-25

Applicant: Samsung Display Co., Ltd.

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

IPC: C09K11/08 ,  C09K11/06 ,  B82Y20/00 ,  B82Y30/00 ,  B82Y40/00 ,  H10K50/115 ,  H10K50/15 ,  H10K50/16 ,  H10K102/00

CPC classification number: C09K11/08 ,  C09K11/06 ,  B82Y20/00 ,  B82Y30/00 ,  B82Y40/00 ,  H10K50/115 ,  H10K50/15 ,  H10K50/16 ,  H10K2102/00

Abstract: A quantum dot composition includes a quantum dot having a surface to which a ligand is bonded, and a thermal decomposition auxiliary compound. The quantum dot composition 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 and the display device.

公开(公告)号：US20230320123A1

公开(公告)日：2023-10-05

申请号：US18165227

申请日：2023-02-06

Applicant: Samsung Display Co., Ltd.

Inventor： Sehun Kim ,  Changhee Lee ,  Jiyoon Kim ,  Heunggyu Kim ,  Jaekook Ha

IPC: H10K50/17 ,  H10K50/16 ,  H10K50/15 ,  H10K50/115 ,  H10K30/82 ,  H10K85/60

CPC classification number: H10K50/171 ,  H10K30/82 ,  H10K50/115 ,  H10K50/15 ,  H10K50/16 ,  H10K50/17 ,  H10K85/611 ,  H10K85/615 ,  H10K85/631 ,  H10K85/657 ,  H10K85/6572 ,  H10K85/6574 ,  H10K85/6576 ,  H10K2102/103

Abstract: A light-emitting device that includes a first electrode, a second electrode and an interlayer between the first electrode and the second electrode and including an emission layer is provided. An electron injection layer and an electron transport layer are between the emission layer and the first electrode. The electron injection layer includes: an oxide of: Zn; Ti; Mg; or any combination thereof, the electron transport layer includes a phosphine oxide compound, and the first electrode of the light-emitting device may be a reflective electrode.

公开(公告)号：US11667834B2

公开(公告)日：2023-06-06

申请号：US17198752

申请日：2021-03-11

Applicant: Samsung Display Co., Ltd.

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

IPC: H10K50/115 ,  H10K71/00 ,  C09K11/02 ,  H01L51/50 ,  H01L51/56 ,  B82Y40/00 ,  B82Y20/00

CPC classification number: C09K11/025 ,  H01L51/502 ,  H01L51/56 ,  B82Y20/00 ,  B82Y40/00

Abstract: A method for manufacturing a light emitting element includes: forming a first electrode; forming a hole transport region on a first electrode; forming an emission layer on the hole transport region; forming an electron transport region on the emission layer; and forming a second electrode on the electron transport region, wherein the forming of the emission layer includes providing a quantum dot composition containing a quantum dot and a ligand bonded to a surface of the quantum dot, to form a preliminary emission layer; and increasing the layer density of the preliminary emission layer by about 5% or greater, thereby improving a luminous efficiency of the light emitting element.

公开(公告)号：US11649401B2

公开(公告)日：2023-05-16

申请号：US16924658

申请日：2020-07-09

Applicant: Samsung Display Co., Ltd.

Inventor： Sehun Kim ,  Changhee Lee ,  Junbo Sim ,  Jaekook Ha

IPC: C09K11/02 ,  C09K11/70 ,  C09K11/08 ,  H01L33/50 ,  H01L51/50 ,  B82Y20/00 ,  B82Y40/00

CPC classification number: C09K11/02 ,  C09K11/0883 ,  C09K11/703 ,  B82Y20/00 ,  B82Y40/00

Abstract: A quantum dot-containing material includes: a quantum dot-containing complex including a quantum dot and a first matrix material; and a second matrix material, wherein the quantum dot is dispersed in the first matrix material, the quantum dot-containing complex is dispersed in the second matrix material, and a refractive index of the first matrix material is greater than that of the second matrix material.

公开(公告)号：US20230025948A1

公开(公告)日：2023-01-26

申请号：US17574467

申请日：2022-01-12

Applicant: Samsung Display Co., Ltd.

Inventor： Youngil Kim ,  Changhee Lee ,  Sehun Kim ,  Jingoo Kang ,  Seunguk Noh ,  Jaekook Ha

IPC: H01L51/50 ,  H01L51/00 ,  H01L27/32 ,  H01L51/56

Abstract: A 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 and including an emission layer, wherein the interlayer may include a layer including a metal oxide, and a surface of the layer including a metal oxide is an organic acid-treated surface.

公开(公告)号：US11866627B2

公开(公告)日：2024-01-09

申请号：US17192388

申请日：2021-03-04

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

CPC classification number: C09K11/06 ,  C07C43/10 ,  C07C53/00 ,  C07C63/08 ,  C07C211/09 ,  C07C309/04 ,  C07C309/30 ,  C07F9/5407 ,  C07F9/5442 ,  H10K85/60 ,  C09K2211/10 ,  C09K2211/1007 ,  H10K50/115 ,  H10K71/00 ,  H10K71/15

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：US11802239B2

公开(公告)日：2023-10-31

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 ,  C09K11/70 ,  C09K11/08 ,  C09K11/56 ,  C01G15/00 ,  H05B33/14 ,  C01G9/08 ,  C01B19/04 ,  H10K50/115 ,  B82Y20/00 ,  B82Y30/00 ,  B82Y40/00 ,  H10K102/00

CPC classification number: C09K11/626 ,  C01B19/04 ,  C01G9/08 ,  C01G15/006 ,  C09K11/0883 ,  C09K11/565 ,  C09K11/70 ,  H05B33/14 ,  H10K50/115 ,  B82Y20/00 ,  B82Y30/00 ,  B82Y40/00 ,  C01P2004/64 ,  C01P2006/60 ,  H10K2102/00

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：US20230320116A1

公开(公告)日：2023-10-05

申请号：US18128965

申请日：2023-03-30

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

Inventor： Yunhyuk Ko ,  Changhee Lee ,  Youngsik Kim ,  Taewan Kim ,  Sohee Jeong ,  Eunhye Cho ,  Mahnmin Choi

IPC: H10K50/115 ,  H01L33/50 ,  B82Y30/00 ,  B82Y40/00 ,  C09K11/06

CPC classification number: H10K50/115 ,  H01L33/502 ,  B82Y30/00 ,  B82Y40/00 ,  C09K11/06 ,  C09K2211/188

Abstract: A method of preparing quantum dot includes: forming a first mixture comprising a core, a zinc-containing first material, and a selenium-containing second material; forming a first intermediate comprising a core and a first shell, from the first mixture, followed by forming a second mixture comprising the first intermediate; forming a third mixture by adding a zinc-containing third material and a sulfur-containing fourth material to the second mixture; forming a second intermediate comprising the core, the first shell, and a second shell, from the third mixture, followed by forming a fourth mixture comprising the second intermediate; adding a ligand precursor-containing fifth material to the fourth mixture; and forming a ligand layer covering the second shell of the second intermediate, wherein an amount of the ligand precursor is in a range of about 10 pbw to about 22 pbw based on 100 pbw of the zinc-containing third material in the fourth mixture.