公开(公告)号：US20200328367A1

公开(公告)日：2020-10-15

申请号：US16812123

申请日：2020-03-06

Applicant: Samsung Display Co., Ltd.

Inventor： Kyoungwon PARK ,  Minki NAM ,  Hyunmi DOH ,  Sungwoon KIM ,  Jae Hong PARK ,  Yunku JUNG

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

Abstract: A light emitting device may include a first electrode, a second electrode opposite to the first electrode, and an emission layer disposed between the first electrode and the second electrode. The emission layer may include a manganese complex compound and a quantum dot. It is possible to improve life span and light emitting efficiency characteristics of the light emitting device.

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.

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：US20210074939A1

公开(公告)日：2021-03-11

申请号：US16895590

申请日：2020-06-08

Applicant: Samsung Display Co., Ltd.

Inventor： Yunku JUNG ,  Minki NAM ,  Hyunmi DOH ,  Yunhyuk KO ,  Sungwoon KIM ,  Jaehoon KIM ,  Myoungjin PARK ,  Jae Hong PARK ,  Junwoo PARK

IPC: H01L51/50 ,  H01L27/32 ,  H01L51/52 ,  H01L51/56 ,  H01L51/00 ,  C09K11/06

Abstract: A quantum dot composition includes a quantum dot, a ligand to bind to a surface of the quantum dot, an additive having an amine group, and a precursor comprising an organometallic compound, the composition forming a modified quantum dot having a reformed surface characteristic. A light emitting element including the modified quantum dot may have improved lifespan, luminous efficiency, and material stability.

公开(公告)号：US20240141228A1

公开(公告)日：2024-05-02

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 ,  H10K85/60

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

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：US20240052239A1

公开(公告)日：2024-02-15

申请号：US18344540

申请日：2023-06-29

Applicant: Samsung Display Co., Ltd.

Inventor： Jungho JO ,  Yunhyuk KO ,  Yunku JUNG ,  Changyeol HAN

IPC: C09K11/62 ,  H10K50/115 ,  C09K11/58 ,  C09K11/02

CPC classification number: C09K11/621 ,  H10K50/115 ,  C09K11/586 ,  C09K11/02 ,  H10K2102/331

Abstract: A quantum dot may include a core including indium (In) and A1, and a first shell covering the core, wherein A1 may be a group III element other than indium, a ratio of a radius of the core to a thickness of the first shell may be in a range of about 1:1 to about 9:1, and the quantum dot may emit blue light having a maximum emission wavelength in a range of about 440 nanometers (nm) to about 480 nm.

公开(公告)号：US20210091324A1

公开(公告)日：2021-03-25

申请号：US16892532

申请日：2020-06-04

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Yunku JUNG ,  Hyunmi DOH ,  JAE HONG PARK ,  Dongwoo SHIN ,  Jaekook HA ,  SUNGWOON KIM ,  MINKI NAM

IPC: H01L51/50 ,  H01L27/32 ,  H01L51/00 ,  C09K11/06

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 body part including a charge transport moiety, and a head part bonded to the surface of the quantum dot. The quantum dot composition according may be applied to a light emitting diode and a display device to provide increased luminous efficiency and device life of the light emitting diode and the display device.

公开(公告)号：US20210066632A1

公开(公告)日：2021-03-04

申请号：US16855985

申请日：2020-04-22

Applicant: Samsung Display Co., Ltd.

Inventor： Minki NAM ,  Yunku JUNG ,  Jaehong PARK ,  Dukki KIM ,  Sungwoon KIM

IPC: H01L51/50 ,  H05B33/14 ,  H01L51/00 ,  H01L51/56

Abstract: A quantum dot composition includes quantum dots and a leveling agent, wherein the leveling agent includes a first repeating unit represented by Formula 1 and a second repeating unit represented by Formula 2: A light-emitting device and a method of manufacturing the same are also provided.

公开(公告)号：US20240164130A1

公开(公告)日：2024-05-16

申请号：US18535417

申请日：2023-12-11

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Yunku JUNG ,  Minki NAM ,  Hyunmi DOH ,  Yunhyuk KO ,  Sungwoon KIM ,  Jaehoon KIM ,  Myoungjin PARK ,  JAE HONG PARK ,  Junwoo PARK

IPC: H10K50/115 ,  C09K11/06 ,  H10K50/00 ,  H10K50/12 ,  H10K50/844 ,  H10K50/86 ,  H10K59/38 ,  H10K71/00 ,  H10K85/30 ,  H10K85/60

CPC classification number: H10K50/115 ,  C09K11/06 ,  H10K50/00 ,  H10K50/12 ,  H10K50/844 ,  H10K50/865 ,  H10K59/38 ,  H10K71/00 ,  H10K85/30 ,  H10K85/631 ,  C09K2211/18 ,  H10K2102/103

Abstract: A quantum dot composition includes a quantum dot, a ligand to bind to a surface of the quantum dot, an additive having an amine group, and a precursor comprising an organometallic compound, the composition forming a modified quantum dot having a reformed surface characteristic. A light emitting element including the modified quantum dot may have improved lifespan, luminous efficiency, and material stability.