公开(公告)号：US11744096B2

公开(公告)日：2023-08-29

申请号：US17671970

申请日：2022-02-15

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 ,  H10K50/115 ,  H10K50/13 ,  H10K71/00 ,  H10K71/15 ,  H10K71/40 ,  H10K101/30 ,  H10K102/00

CPC classification number: H10K50/115 ,  H10K50/13 ,  H10K71/00 ,  H10K71/15 ,  H10K71/441 ,  H10K2101/30 ,  H10K2102/351

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：US11737301B2

公开(公告)日：2023-08-22

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: H10K50/19 ,  C09K11/06 ,  C09K11/02 ,  H10K50/115 ,  H10K71/00 ,  H10K71/15 ,  H10K85/10 ,  H10K85/60

CPC classification number: H10K50/19 ,  C09K11/025 ,  C09K11/06 ,  H10K50/115 ,  H10K71/00 ,  H10K71/15 ,  C09K2211/10 ,  H10K85/111 ,  H10K85/115 ,  H10K85/1135 ,  H10K85/626

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：US11495764B2

公开(公告)日：2022-11-08

申请号：US17026622

申请日：2020-09-21

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Tae Ho Kim ,  Moon Gyu Han ,  Hongkyu Seo ,  Heejae Lee ,  Eun Joo Jang

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

Abstract: An electroluminescent device and a display device including the same are disclosed, wherein the electroluminescent device includes a first electrode; a hole transport layer disposed on the first electrode; a light emitting layer including a first light emitting layer disposed on the hole transport layer, the first emitting layer including a first quantum dot, and a second light emitting layer including a second quantum dot and an n-type organic semiconductor, the second light emitting layer disposed on the first light emitting layer; an electron transport layer disposed on the second light emitting layer; and a second electrode disposed on the electron transport layer.

公开(公告)号：US10978658B2

公开(公告)日：2021-04-13

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 ,  H01L51/00 ,  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：US10446782B1

公开(公告)日：2019-10-15

申请号：US16104967

申请日：2018-08-20

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Moon Gyu Han ,  Dae Young Chung ,  Hongkyu Seo ,  Kwanghee Kim ,  Kun Su Park ,  Sujin Park ,  Eun Joo Jang

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

Abstract: A quantum dot device includes a first electrode and a second electrode facing each other, a quantum dot layer disposed between the first electrode and the second electrode and comprising a plurality of quantum dots, a first charge auxiliary layer disposed between the first electrode and the quantum dot layer and contacting the quantum dot layer, and a second charge auxiliary layer disposed between the second electrode and the quantum dot layer and contacting the quantum dot layer, wherein the plurality of quantum dots includes a quantum dot including an organic ligand on a surface thereof, the organic ligand including a hydrophilic functional group at a terminal end.

公开(公告)号：US12213333B2

公开(公告)日：2025-01-28

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 ,  H10K50/115 ,  H10K71/00 ,  H10K85/60 ,  H10K102/00

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：US11884858B2

公开(公告)日：2024-01-30

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 ,  B82Y40/00 ,  B82Y30/00 ,  B82Y20/00 ,  H10K50/16 ,  H10K50/18 ,  H10K50/115 ,  H10K50/17

CPC classification number: C09K11/883 ,  C09K11/703 ,  B82Y20/00 ,  B82Y30/00 ,  B82Y40/00 ,  H10K50/115 ,  H10K50/16 ,  H10K50/171 ,  H10K50/18

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：US11832468B2

公开(公告)日：2023-11-28

申请号：US17358905

申请日：2021-06-25

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 ,  H10K50/115 ,  H10K102/00

CPC classification number: H10K50/16 ,  H10K71/00 ,  H10K85/60 ,  H10K50/115 ,  H10K2102/00 ,  H10K2102/331

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：US11812627B2

公开(公告)日：2023-11-07

申请号：US17512067

申请日：2021-10-27

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Hongkyu Seo ,  Eun Joo Jang ,  Moon Gyu Han ,  Tae Ho Kim ,  Dae Young Chung

IPC: H10K50/115 ,  C09K11/88 ,  H10K50/11 ,  H10K50/15 ,  H10K50/16 ,  H10K50/18 ,  H10K50/17 ,  H10K71/00 ,  B82Y20/00 ,  H10K101/40 ,  H10K101/30

CPC classification number: H10K50/115 ,  C09K11/883 ,  H10K50/11 ,  H10K50/15 ,  H10K50/16 ,  H10K50/167 ,  H10K50/171 ,  H10K50/18 ,  H10K71/00 ,  B82Y20/00 ,  H10K2101/30 ,  H10K2101/40

Abstract: A quantum dot device including an anode; a cathode disposed substantially opposite to the anode; a hole injection layer disposed on the anode between the anode and the cathode; a hole transport layer disposed on the hole injection layer between the hole injection layer and the cathode; and a quantum dot layer disposed on the hole transport layer between the hole transport layer and the cathode, wherein the quantum dot layer includes a plurality of quantum dots, wherein the hole transport layer includes a hole transport material and an electron transport material, and wherein a lowest unoccupied molecular orbital (LUMO) energy level of the electron transport material and a lowest unoccupied molecular orbital (LUMO) energy level of the quantum dot layer is about 0.5 electron volts or less.

公开(公告)号：US11793011B2

公开(公告)日：2023-10-17

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: H10K50/115 ,  H10K50/11 ,  H10K50/81 ,  H10K50/82 ,  H10K50/17 ,  H10K50/18 ,  H10K101/40 ,  H10K101/30 ,  H10K71/00 ,  H10K50/15 ,  H10K71/12 ,  H10K85/10 ,  H10K102/00

CPC classification number: H10K50/115 ,  H10K50/11 ,  H10K50/171 ,  H10K50/81 ,  H10K50/82 ,  H10K71/00 ,  H10K50/15 ,  H10K50/17 ,  H10K50/18 ,  H10K71/12 ,  H10K85/115 ,  H10K85/1135 ,  H10K2101/30 ,  H10K2101/40 ,  H10K2102/00 ,  H10K2102/331 ,  H10K2102/351 ,  H10K2102/361

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.