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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
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.
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2.发明公开公开(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.
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3.发明申请公开(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
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.
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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.
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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
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.
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Patent Agency Ranking
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
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.
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公开(公告)号：US20210035962A1
公开(公告)日：2021-02-04
申请号：US16932591
申请日：2020-07-17
Applicant: Samsung Display Co., Ltd.
Inventor： Yunku JUNG , Sungwoon KIM , Changhee LEE , Jaekook HA , Yunhyuk KO , Jaehoon KIM , Minki NAM , Hyunmi DOH , Myoungjin PARK , Jae Hong PARK , Junwoo PARK
Abstract: Provided is a light emitting element according to embodiments which includes a body including a semiconductor layer and an active layer, and a ligand including a head portion bonded to a surface of the body, an end portion spaced apart from the body, and having a positive or a negative charge, and a chain portion connecting the head portion and the end portion.
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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.
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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
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.
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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.
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