公开(公告)号：US20200321535A1

公开(公告)日：2020-10-08

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: H01L51/00

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：US20220149223A1

公开(公告)日：2022-05-12

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 ,  H01L27/32 ,  H01L51/56 ,  H01L51/50

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：US20210376193A1

公开(公告)日：2021-12-02

申请号：US17331510

申请日：2021-05-26

Applicant: Samsung Display Co., Ltd.

Inventor： Yunhyuk KO ,  Changhee LEE ,  Yunku JUNG ,  Dukki KIM ,  Jongwon PARK ,  Jaekook HA

IPC: H01L33/32 ,  H01L33/04 ,  H01L33/00

Abstract: Provided are a light-emitting device, a method of preparing the light-emitting device, an ink composition including the light-emitting device, and an apparatus including the light-emitting device. The light-emitting device may include: a semiconductor region including a first semiconductor layer, a second semiconductor layer, and an active layer between the first semiconductor layer and the second semiconductor layer; a first protective layer on at least one portion of a surface of the semiconductor region and including a Group III-V compound; and a second protective layer on the first protective layer and including a metal oxide.

公开(公告)号：US20210226093A1

公开(公告)日：2021-07-22

申请号：US16943829

申请日：2020-07-30

Applicant: Samsung Display Co., Ltd.

Inventor： Yunku JUNG ,  Changhee LEE ,  Yunhyuk KO ,  Dukki KIM ,  Jongwon PARK ,  Jaekook HA

IPC: H01L33/26 ,  H01L25/075

Abstract: A light-emitting device (LED) includes a first semiconductor layer, a second semiconductor layer facing the first semiconductor layer, an insulating layer arranged to at least partially surround outer surfaces of the first semiconductor layer and the second semiconductor layer, and a first ligand bonded to a surface of the insulating layer and a second ligand bonded to the first ligand.

公开(公告)号：US20210009893A1

公开(公告)日：2021-01-14

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

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：US20230413598A1

公开(公告)日：2023-12-21

申请号：US18322945

申请日：2023-05-24

Applicant: Samsung Display Co., Ltd.

Inventor： Sehun KIM ,  Changhee LEE ,  Yeo Geon Yoon

IPC: H10K50/828 ,  H10K50/15 ,  H10K50/17 ,  H10K50/16 ,  C09K11/06

CPC classification number: H10K50/828 ,  H10K50/15 ,  H10K50/171 ,  H10K50/16 ,  C09K11/06 ,  H10K2102/102

Abstract: A light-emitting device in which a hole injection layer is disposed between an emission layer and a second electrode, and the hole injection layer includes graphene and contacts the second electrode, and a first electrode is a cathode.

公开(公告)号：US20210371738A1

公开(公告)日：2021-12-02

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 ,  G03F7/004 ,  H01L51/50

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：US20210371732A1

公开(公告)日：2021-12-02

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: C09K11/02 ,  H01L51/50 ,  H01L51/56

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：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：US20210269662A1

公开(公告)日：2021-09-02

申请号：US17092918

申请日：2020-11-09

Applicant: Samsung Display Co., Ltd.

Inventor： Junbo SIM ,  Dukki KIM ,  Hyojin KO ,  Changhee LEE ,  Jaekook HA

IPC: C09D11/36 ,  C09D11/033 ,  C09D11/50 ,  H01L51/00 ,  H01L51/56

Abstract: An inkjet composition for an inkjet printer, a light-emitting device including the same, and a method of manufacturing the light-emitting device are provided. The ink composition may include light-emitting diodes and a solvent. The solvent may have a first viscosity at a first temperature section that may be greater than a second viscosity at a second temperature section. The solvent may include an ester compound of citric acid, glycol, alkanediol, alkanolamine, alkenic acid, alkenol, a pyrrolidone group-containing compound, glycerol, a compound represented by Formula 1, a compound represented by Formula 2, or any combination thereof: Substituents in Formula 1 and Formula 2 may be understood as described in connection with the detailed description. Each of the light-emitting diodes may have a size in a range of about 0.1 μm to about 10 μm.