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：US20200259102A1

公开(公告)日：2020-08-13

申请号：US16588247

申请日：2019-09-30

Applicant: Samsung Display Co., Ltd.

Inventor： Jaekook HA

IPC: H01L51/00

Abstract: A light-emitting device includes: an anode; a cathode facing the anode; an emission layer between the anode and the cathode; and an electron control layer between the emission layer and the cathode, wherein the electron control layer includes an electron control compound represented by Formula 5: A method of manufacturing the light-emitting device includes: forming an emission layer on an anode; and forming an electron control layer on the emission layer, wherein the electron control layer includes an electron control compound represented by Formula 5.

公开(公告)号：US20190326520A1

公开(公告)日：2019-10-24

申请号：US16391985

申请日：2019-04-23

Applicant: Samsung Display Co., Ltd.

Inventor： Sehun KIM ,  Dukki KIM ,  Seunguk NOH ,  Dongwoo SHIN ,  Jaekook HA ,  Eungdo KIM ,  Eunju NAM ,  Hyunwoo LEE ,  Jaesung LIM

IPC: H01L51/00 ,  H01L51/50

Abstract: An organic light-emitting device includes a first hole transport region including a polymer compound that includes a repeating unit derived from a compound including a moiety represented by Formula 1A and a second hole transport region including a first compound and a second compound, the first compound including a repeating unit represented by Formula 1, the second compound being a compound represented by Formula 1, and the third compound being a compound represented by Formula 3.

公开(公告)号：US20240414932A1

公开(公告)日：2024-12-12

申请号：US18807908

申请日：2024-08-16

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Heunggyu KIM ,  Sehun KIM ,  Taeheon KANG ,  Hyeran MUN ,  Juyon LEE ,  Jaekook HA

IPC: H10K50/11 ,  H10K50/16 ,  H10K71/00 ,  H10K71/12 ,  H10K85/60 ,  H10K101/30 ,  H10K101/40

Abstract: A composition for manufacturing a light-emitting device includes: a solvent; and a first compound and a second compound, each dispersed in the solvent; wherein a molecular weight of the first compound is 750 g/mol or less, a molecular weight of the second compound is greater than 750 g/mol, a lowest unoccupied molecular orbital (LUMO) energy level of the second compound is greater than −2.4 eV, a highest occupied molecular orbital (HOMO) energy level of the second compound is less than −5.6 eV, and a bandgap energy of the second compound is greater than 3.2 eV.

公开(公告)号：US20230265306A1

公开(公告)日：2023-08-24

申请号：US18172286

申请日：2023-02-21

Applicant: Samsung Display Co., Ltd.

Inventor： Sangyeop LEE ,  Jongwoo SHIN ,  Dukki KIM ,  Sehun KIM ,  Wonjun PARK ,  Jaekook HA

IPC: C09D11/50 ,  H10K50/16 ,  H10K50/115 ,  C09D11/033 ,  C09K11/55 ,  B82Y30/00

CPC classification number: C09D11/50 ,  H10K50/16 ,  H10K50/115 ,  C09D11/033 ,  C09K11/55 ,  B82Y30/00

Abstract: An ink composition for a light-emitting device, the ink composition including: a metal oxide; and a mixed solvent composition including a first solvent, a second solvent, and a third solvent,



wherein the first solvent includes one hydroxyl group and has a boiling point of 160° C. to 270° C., the second solvent includes one hydroxyl group and has a boiling point of 270° C. to 350° C., and the third solvent includes two or more hydroxyl groups and has a boiling point of 270° C. to 350° C.

公开(公告)号：US20220216444A1

公开(公告)日：2022-07-07

申请号：US17445666

申请日：2021-08-23

Applicant: Samsung Display Co., Ltd.

Inventor： Heunggyu KIM ,  Sehun KIM ,  Taeheon KANG ,  Hyeran MUN ,  Juyon LEE ,  Jaekook HA

IPC: H01L51/50 ,  H01L51/00

Abstract: A composition for manufacturing a light-emitting device includes: a solvent; and a first compound and a second compound, each dispersed in the solvent; wherein a molecular weight of the first compound is 750 g/mol or less, a molecular weight of the second compound is greater than 750 g/mol, a lowest unoccupied molecular orbital (LUMO) energy level of the second compound is greater than −2.4 eV, a highest occupied molecular orbital (HOMO) energy level of the second compound is less than −5.6 eV, and a bandgap energy of the second compound is greater than 3.2 eV.

公开(公告)号：US20220204837A1

公开(公告)日：2022-06-30

申请号：US17561604

申请日：2021-12-23

Applicant: Samsung Display Co., Ltd.

Inventor： Yunku JUNG ,  Hyunmi DOH ,  Jaekook HA ,  Sungwoon KIM ,  Jongwoo SHIN ,  Hyekyoung CHOI

IPC: C09K11/02 ,  C09K11/54 ,  C01G9/02 ,  C09D11/50 ,  C09D11/037 ,  C09D11/033 ,  H01L51/50

Abstract: A nano composite, a nanoparticle ink composition including a solvent and the nanocomposite, and a light-emitting device including 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 at least one layer included in the interlayer is made from the nanoparticle ink composition. The nano composite includes: a metal oxide nanoparticle; and a chelating ligand bonded to a surface of the nanoparticle and including a cyclic moiety.

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.