公开(公告)号：US20210395611A1

公开(公告)日：2021-12-23

申请号：US17308344

申请日：2021-05-05

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Kwanghee KIM ,  Tae Hyung KIM ,  Hongkyu SEO ,  Won Sik YOON ,  Jaeyong LEE ,  Eun Joo JANG ,  Oul CHO

IPC: C09K11/88 ,  C09K11/70

Abstract: A semiconductor nanocrystal including an anion of an inorganic metal salt and a first organic ligand bound to a surface of the semiconductor nanocrystal, wherein the first organic ligand includes a substituted or unsubstituted C6 to C30 aromatic ring group and a carboxylate, a substituted or unsubstituted C3 to C30 aromatic hetero cyclic group and a carboxylate, or a combination thereof.

公开(公告)号：US20210359238A1

公开(公告)日：2021-11-18

申请号：US17387281

申请日：2021-07-28

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sung Woo KIM ,  Tae Ho KIM ,  Eun Joo JANG ,  Hongkyu SEO ,  Sang Jin LEE ,  Dae Young CHUNG ,  Oul CHO

IPC: H01L51/50 ,  H01L51/52 ,  H01L51/56

Abstract: A quantum dot device includes: a first electrode and a second electrode facing each other; a quantum dot layer between the first electrode and the second electrode, and an electron auxiliary layer between the quantum dot layer and the second electrode, the electron auxiliary layer including a first nanoparticle and a second nanoparticle which is larger than the first nanoparticle, wherein a work function of the first electrode is greater than a work function of the second electrode, and wherein a difference between a lowest unoccupied molecular orbital energy level of the quantum dot layer and a lowest unoccupied molecular orbital energy level of the electron auxiliary layer is less than about 1.1 electronvolts.

公开(公告)号：US20210226145A1

公开(公告)日：2021-07-22

申请号：US17205015

申请日：2021-03-18

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Dae Young CHUNG ,  Kwanghee KIM ,  Hongkyu SEO ,  Eun Joo JANG ,  Oul CHO ,  Tae Hyung KIM ,  Yuho WON ,  Hee Jae LEE

IPC: H01L51/50 ,  H01L51/00 ,  H01L51/56

Abstract: A light emitting device, a method of manufacturing the same, and a display device including the same are disclosed. The light emitting device including a first electrode and a second electrode facing each other, an emission layer disposed between the first electrode and the second electrode, the emission layer including quantum dots, and a charge auxiliary layer disposed between the emission layer and the second electrode, wherein the emission layer includes a first surface facing the charge auxiliary layer and an opposite second surface, the quantum dots include a first organic ligand on a surface of the quantum dots, in the emission layer, an amount of the first organic ligand in a portion adjacent to the first surface is larger than an amount of the first organic ligand in a portion adjacent to the second surface.

公开(公告)号：US20200083470A1

公开(公告)日：2020-03-12

申请号：US16549472

申请日：2019-08-23

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Dae Young CHUNG ,  Kwanghee KIM ,  Hongkyu SEO ,  Eun Joo JANG ,  Oul CHO ,  Tae Hyung KIM ,  Yuho WON ,  Hee Jae LEE

IPC: H01L51/50 ,  H01L51/56 ,  C09K11/06 ,  H01L51/00

Abstract: A light emitting device, a method of manufacturing the same, and a display device including the same are disclosed. The light emitting device including a first electrode and a second electrode facing each other, an emission layer disposed between the first electrode and the second electrode, the emission layer including quantum dots, and a charge auxiliary layer disposed between the emission layer and the second electrode, wherein the emission layer includes a first surface facing the charge auxiliary layer and an opposite second surface, the quantum dots include a first organic ligand on a surface of the quantum dots, in the emission layer, an amount of the first organic ligand in a portion adjacent to the first surface is larger than an amount of the first organic ligand in a portion adjacent to the second surface.

公开(公告)号：US20200028105A1

公开(公告)日：2020-01-23

申请号：US16512954

申请日：2019-07-16

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Hongkyu SEO ,  Moon Gyu HAN ,  Eun Joo JANG ,  Sujin PARK ,  Dae Young CHUNG

IPC: H01L51/50 ,  H01L33/50 ,  H01L51/44

Abstract: A light emitting device including a first electrode and a second electrode facing each other, an emission layer disposed between the first electrode and the second electrode, the emission layer including quantum dots, and an electron auxiliary layer disposed between the emission layer and the second electrode, the electron auxiliary layer including nanoparticles and a small molecule organic compound and a display device including the same. The nanoparticles include a metal oxide including zinc, and an electron mobility of the small molecule organic compound is less than an electron mobility of the nanoparticles.

公开(公告)号：US20240065018A1

公开(公告)日：2024-02-22

申请号：US18498727

申请日：2023-10-31

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Hongkyu SEO ,  Kwanghee KIM ,  Eun Joo JANG ,  Won Sik YOON ,  Tae Hyung KIM ,  Tae Ho KIM

IPC: H10K50/16 ,  H10K71/00 ,  H10K85/60

CPC classification number: H10K50/16 ,  H10K71/00 ,  H10K85/60 ,  H10K50/115

Abstract: Light emitting device, method of manufacturing the light emitting device, and display device including the light emitting device are disclosed. The light emitting device includes a first electrode and a second electrode each having a surface opposite the other, a light emitting layer including quantum dots that is disposed between the first electrode and the second electrode, and an electron auxiliary layer disposed between the light emitting layer and the second electrode, wherein the electron auxiliary layer includes metal oxide nanoparticles including an anion of an organic acid bound to a surface of the metal oxide nanoparticle.

公开(公告)号：US20210226172A1

公开(公告)日：2021-07-22

申请号：US17226158

申请日：2021-04-09

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Dae Young CHUNG ,  Moon Gyu HAN ,  Oul CHO ,  Tae Hyung KIM ,  Sujin PARK ,  Hongkyu SEO ,  Eun Joo JANG

IPC: H01L51/52 ,  H01L51/00 ,  H01L51/50 ,  H01L51/56 ,  C09K11/06 ,  C09K11/02

Abstract: An electroluminescent device including a first electrode, a hole transport layer disposed on the first electrode, a first emission layer disposed on the hole transport layer, the first emission layer including a first light emitting particle on which a first ligand and a second ligand having a hole transporting property are attached, a second emission layer disposed on the first emission layer, the second emission layer including a second light emitting particle on which a first ligand and a third ligand having an electron transporting property are attached, an electron transport layer disposed on the second emission layer, and a second electrode disposed on the electron transport layer, wherein a solubility of the second ligand in a solvent is different than a solubility of the third ligand in the solvent and a display device including the same.

公开(公告)号：US20210066633A1

公开(公告)日：2021-03-04

申请号：US16943174

申请日：2020-07-30

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Yeonkyung LEE ,  Eun Joo JANG ,  Hongkyu SEO ,  Dae Young CHUNG

IPC: H01L51/50 ,  C09K11/88 ,  C09K11/08 ,  C09K11/02 ,  H01L51/00

Abstract: An electroluminescent device and a display device including the device are disclosed, wherein the electroluminescent device includes a first electrode; a hole transport layer disposed on the first electrode; an emission layer disposed on the hole transport layer, the emission layer including quantum dots;
a self-assembled monomolecular layer disposed on the emission layer, the self-assembled monomolecular layer including self-assembled monomolecules; an electron transport layer disposed on the self-assembled monomolecular layer; and a second electrode disposed on the electron transport layer.

公开(公告)号：US20200335715A1

公开(公告)日：2020-10-22

申请号：US16851276

申请日：2020-04-17

Applicant: SAMSUNG ELECTRONICS CO., LTD

Inventor： Dae Young CHUNG ,  Kwanghee KIM ,  Eun Joo JANG ,  Tae Hyung KIM ,  Hongkyu SEO ,  Heejae LEE ,  Jaejun CHANG

IPC: H01L51/50 ,  H01L51/00 ,  H01L51/56

Abstract: A light emitting device including a first electrode and a second electrode, and an emission layer disposed between the first electrode and the second electrode and including quantum dots, a first charge auxiliary layer disposed between the emission layer and the first electrode, and a second charge auxiliary layer disposed between the emission layer and the second electrode, wherein the emission layer comprises a first emission layer contacting the first charge auxiliary layer, a second emission layer disposed on the first emission layer, and a third emission layer disposed on the second emission layer. The hole mobility of the first emission layer decreases sequentially from the first emission layer to the third emission layer.

公开(公告)号：US20200161551A1

公开(公告)日：2020-05-21

申请号：US16372861

申请日：2019-04-02

Applicant: Samsung Electronics Co., Ltd.

Inventor： Won Sik YOON ,  Moon Gyu HAN ,  Tae Ho KIM ,  Eun Joo JANG ,  Hongkyu SEO

IPC: H01L51/00

Abstract: An electroluminescent device and including a first electrode and a second electrode facing each other; an emission layer disposed between the first electrode and the second electrode, wherein the emission layer includes a quantum dot and a first electron transporting material represented by Chemical Formula 1; a hole transport layer disposed between the emission layer and the first electrode; and an electron transport layer disposed between the emission layer and the second electrode: wherein, the definitions of groups and variables in Chemical Formula 1 are the same as described in the specification.