公开(公告)号：US20240317599A1

公开(公告)日：2024-09-26

申请号：US18512784

申请日：2023-11-17

Applicant: Samsung Display Co., Ltd.

Inventor： Jungho Jo ,  Yunku Jung ,  Chulsoon Park

IPC: C01G9/02 ,  B82Y20/00 ,  B82Y30/00 ,  C09D11/30 ,  C09K11/54 ,  H10K50/115 ,  H10K50/15 ,  H10K50/16 ,  H10K85/30

CPC classification number: C01G9/02 ,  B82Y20/00 ,  B82Y30/00 ,  C09D11/30 ,  C09K11/54 ,  H10K50/115 ,  H10K50/15 ,  H10K50/16 ,  H10K85/381

Abstract: A nanocomposite including a metal oxide nanoparticle and a hydrophilic ligand is provided. The nanocomposite is a component of an ink composition, a light-emitting device, an electronic apparatus, and electronic equipment.

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：US11895856B2

公开(公告)日：2024-02-06

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: C09K11/06 ,  C09K11/02 ,  C09K11/54 ,  C09K11/56 ,  H10K50/115 ,  H10K50/00 ,  H10K50/12 ,  H10K50/844 ,  H10K50/86 ,  H10K59/38 ,  H10K71/00 ,  H10K85/30 ,  H10K85/60 ,  H10K102/10 ,  H10K102/00

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 ,  H10K2102/351

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：US20230371296A1

公开(公告)日：2023-11-16

申请号：US18191783

申请日：2023-03-28

Applicant: Samsung Display Co., Ltd.

Inventor： Yunku Jung ,  Yohan Suh ,  Chulsoon Park

IPC: H10K50/115 ,  C09K11/70 ,  C09K11/88 ,  C09K11/56

CPC classification number: H10K50/115 ,  C09K11/70 ,  C09K11/883 ,  C09K11/565 ,  B82Y40/00

Abstract: A quantum dot composition includes a first quantum dot and a second quantum dot, wherein the first quantum dot includes a first core and a first shell surrounding at least a portion of the first core, the first shell includes a first metal and a first chalcogenide, the second quantum dot includes a second core and a second shell surrounding at least a portion of the second core, the second shell includes a second metal and a second chalcogenide, and a first molar ratio of the first metal to the first chalcogenide in the first quantum dot is different from a second molar ratio of the second metal to the second chalcogenide in the second quantum dot.

公开(公告)号：US20230227722A1

公开(公告)日：2023-07-20

申请号：US18155972

申请日：2023-01-18

Applicant: Samsung Display Co., Ltd.

Inventor： Yunku Jung ,  Yunhyuk Ko ,  Yohan Suh ,  Changyeol Han

IPC: C09K11/88 ,  C09K11/08 ,  C09K11/02 ,  H10K50/115

CPC classification number: C09K11/883 ,  C09K11/0883 ,  C09K11/025 ,  H10K50/115 ,  B82Y20/00

Abstract: A quantum dot composition, including a first quantum dot and a second quantum dot, wherein a valence band maximum energy level of the first quantum dot is different from a valence band maximum energy level of the second quantum dot, as determined by ambient photoelectron spectroscopy, and an energy band gap of the first quantum dot is identical to an energy band gap of the second quantum dot, as determined by ultraviolet-visible spectroscopy.

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：US20220315441A1

公开(公告)日：2022-10-06

申请号：US17705988

申请日：2022-03-28

Applicant: Samsung Display Co., Ltd

Inventor： Sehun KIM ,  Changhee LEE ,  Seunguk NOH ,  Jingoo KANG ,  Yonghwi KIM ,  Jonghoon KIM ,  Hyunmi DOH ,  Myoungjin PARK ,  Yunku Jung

IPC: C01G9/02 ,  C01G9/00 ,  C09K11/54

Abstract: A metal oxide composition includes: a solvent; a metal oxide; and a hydrogen cation source that includes a compound of Formula 1, or that includes a compound of Formula 2, or that includes any combination thereof: wherein, in Formulae 1 and 2, the variables are as described herein.

公开(公告)号：US12258504B2

公开(公告)日：2025-03-25

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 ,  H10K50/115 ,  H10K71/00 ,  H10K71/15 ,  H10K85/60

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：US12129416B2

公开(公告)日：2024-10-29

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 ,  B82Y20/00 ,  B82Y30/00 ,  B82Y40/00 ,  H10K50/115 ,  H10K102/00

CPC classification number: C09K11/06 ,  H10K50/115 ,  B82Y20/00 ,  B82Y30/00 ,  B82Y40/00 ,  C09K2211/10 ,  H10K2102/00

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：US20240279168A1

公开(公告)日：2024-08-22

申请号：US18496011

申请日：2023-10-27

Applicant: Samsung Display Co., Ltd.

Inventor： Yunku Jung ,  Yunhyuk Ko ,  Seonhui Baek ,  Sehun Kim

IPC: C07C323/22 ,  C07C323/58 ,  C07D211/54 ,  C07F7/08 ,  H10K50/11 ,  H10K50/15 ,  H10K50/16

CPC classification number: C07C323/22 ,  C07C323/58 ,  C07D211/54 ,  C07F7/081 ,  H10K50/11 ,  H10K50/15 ,  H10K50/16 ,  B82Y30/00

Abstract: Embodiments provide a ligand compound, an inorganic nanoparticle-composite including the ligand compound, an ink composition for a light-emitting device including the inorganic nanoparticle-composite, a light-emitting device including a layer formed of the ink composition, and an electronic apparatus including the light-emitting device. The ligand is represented by Formula 1, which is explained in the specification: