公开(公告)号：US20210376242A1

公开(公告)日：2021-12-02

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 ,  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 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：US20210371739A1

公开(公告)日：2021-12-02

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

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：US20210371736A1

公开(公告)日：2021-12-02

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 ,  C07C309/04 ,  H01L51/00 ,  C07C309/30 ,  C07C53/00 ,  C07C63/08 ,  C07F9/54 ,  C07C43/10 ,  C07C211/09

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：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：US20210376244A1

公开(公告)日：2021-12-02

申请号：US17333354

申请日：2021-05-28

Applicant: Samsung Display Co., Ltd.

Inventor： Hyojin KO ,  Changhee Lee ,  Dukki Kim ,  Sehun Kim ,  Youngil Kim ,  Seungmook Lee ,  Jaekook Ha

IPC: H01L51/00 ,  C09D11/52 ,  C09D11/38

Abstract: According to one aspect of the invention, a hole-transporting ink composition for a light emitting device, the hole-transporting ink composition includes an adhesion-promoting compound represented by Formula 1 and a hole-transporting compound: A1—B1—C1   Formula 1 wherein, in Formula 1, the variables are defined above.

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：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.

公开(公告)号：US20210238435A1

公开(公告)日：2021-08-05

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 ,  C09D11/326 ,  C08L75/16 ,  C08G69/48 ,  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.