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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
发明人： Yunku JUNG , Sungwoon KIM , Changhee LEE , Jaekook HA , Yunhyuk KO , Jaehoon KIM , Minki NAM , Hyunmi DOH , Myoungjin PARK , Jae Hong PARK , Junwoo PARK
摘要： 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：US20210296605A1
公开(公告)日：2021-09-23
申请号：US17107411
申请日：2020-11-30
发明人： Junwoo PARK , Myoungjin PARK , Sooho LEE , Yunhyuk KO , Sungwoon KIM , Minki NAM , Jaekook HA
IPC分类号： H01L51/50
摘要： A light-emitting device includes: a first electrode; a second electrode facing the first electrode; an emission layer between the first electrode and the second electrode and including quantum dots; a hole transport region between the first electrode and the emission layer; and an electron sink layer between the emission layer and the hole transport region and including an electron transport material, wherein the electron transport material includes a metal, a metal oxide, a metal-containing material, or any combination thereof.
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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
发明人： Yunku JUNG , Minki NAM , Hyunmi DOH , Yunhyuk KO , Sungwoon KIM , Jaehoon KIM , Myoungjin PARK , Jae Hong PARK , Junwoo PARK
摘要： 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：US20240164130A1
公开(公告)日：2024-05-16
申请号：US18535417
申请日：2023-12-11
发明人： Yunku JUNG , Minki NAM , Hyunmi DOH , Yunhyuk KO , Sungwoon KIM , Jaehoon KIM , Myoungjin PARK , JAE HONG PARK , Junwoo PARK
IPC分类号： H10K50/115 , C09K11/06 , H10K50/00 , H10K50/12 , H10K50/844 , H10K50/86 , H10K59/38 , H10K71/00 , H10K85/30 , H10K85/60
CPC分类号： H10K50/115 , C09K11/06 , H10K50/00 , H10K50/12 , H10K50/844 , H10K50/865 , H10K59/38 , H10K71/00 , H10K85/30 , H10K85/631 , C09K2211/18 , H10K2102/103
摘要： 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：US20220131108A1
公开(公告)日：2022-04-28
申请号：US17508480
申请日：2021-10-22
发明人： Myoungjin PARK , Changhee Lee , Jaehong Park , Jingoo Kang , Seokgyu Yoon , Jaeyong Lee
摘要： A light-emitting device includes: a first electrode; a second electrode; an interlayer between the first electrode and the second electrode and including an emission layer; a hole transport region between the first electrode and the emission layer; and an electron transport region between the second electrode and the emission layer, wherein the first electrode is a multi-layered electrode including: a first layer including a first material, a second layer disposed on the first layer and including a second material, and a third layer between the second layer and the hole transport region and including a third material, wherein a first surface of the third layer contacts the second layer, and a second surface of the third layer facing the first surface directly contacts the hole transport region, and the third material has a work function of greater than about 4.8 eV and less than or equal to about 6.8 eV.
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公开(公告)号：US20220315441A1
公开(公告)日：2022-10-06
申请号：US17705988
申请日：2022-03-28
发明人： Sehun KIM , Changhee LEE , Seunguk NOH , Jingoo KANG , Yonghwi KIM , Jonghoon KIM , Hyunmi DOH , Myoungjin PARK , Yunku Jung
摘要： 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.
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公开(公告)号：US20210217965A1
公开(公告)日：2021-07-15
申请号：US17030031
申请日：2020-09-23
发明人： Hyunmi DOH , Changhee LEE , Myoungjin PARK , Jaekook HA
摘要： A light-emitting device includes a first electrode, an emission layer, an electron transport layer, a metal-nucleation inducing layer, and a second electrode. The metal-nucleation inducing layer is in direct contact with the second electrode, and includes a metal-nucleation inducing material having at least one metal-nucleation inducing group. The second electrode includes a metal-containing film that is hybridized with the metal-nucleation inducing material. The metal-nucleation inducing group is a π electron-deficient nitrogen-containing C1-C60 cyclic group that is unsubstituted or substituted with at least one R1 or a group represented by one of Formulae 1A to 1E, and does not comprise a group represented by *—C(═O)(OH) and a cyano group. The emission efficiency and/or lifespan of the light-emitting device may be improved because of the metal-nucleation inducing layer.
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