公开(公告)号：US11591515B2

公开(公告)日：2023-02-28

申请号：US16427561

申请日：2019-05-31

Applicant: Samsung Electronics Co., Ltd.

Inventor： Tae Ho Kim ,  Chan Su Kim ,  Jaejun Chang ,  Eun Joo Jang ,  Hongkyu Seo

IPC: C09K11/06 ,  H01L51/00 ,  H01L51/50 ,  H01L33/06 ,  C09K11/02 ,  B82Y20/00

Abstract: A semiconductor nanocrystal-ligand composite that includes a semiconductor nanocrystal and a ligand layer including an organic ligand coordinated on the surface of the semiconductor nanocrystal, wherein the organic ligand includes a moiety having a conjugation structure, and a first functional group (X) and a second functional group (Y) linked to the moiety having a conjugation structure, wherein the first functional group (X) is bound to the surface of the semiconductor nanocrystal and the second functional group (Y) is present at an ortho position with respect to the first functional group (X).

公开(公告)号：US10818858B2

公开(公告)日：2020-10-27

申请号：US16058176

申请日：2018-08-08

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Tae Ho Kim ,  Chan Su Kim ,  Kun Su Park ,  Eun Joo Jang ,  Sung Woo Kim ,  Hongkyu Seo

IPC: H01L29/06 ,  H01L51/50 ,  H01L51/56 ,  H01L51/52 ,  H01L51/00

Abstract: An electroluminescent device and a display device including the same are disclosed. The electroluminescent device includes a first electrode, an electron transport layer disposed on the first electrode and including inorganic oxide particles, a self-assembled monolayer disposed on the electron transport layer, an emission layer disposed on the self-assembled monolayer and including light emitting particles, a hole transport layer disposed on the emission layer, and a second electrode disposed on the hole transport layer.

公开(公告)号：US11637259B2

公开(公告)日：2023-04-25

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 ,  B82Y40/00 ,  B82Y20/00

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：US11594698B2

公开(公告)日：2023-02-28

申请号：US16913575

申请日：2020-06-26

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Dae Young Chung ,  Hongkyu Seo ,  Yeonkyung Lee ,  Eun Joo Jang

IPC: H01L51/50 ,  H01L51/52

Abstract: An electronic device includes a first electrode and a second electrode facing each other, an emission layer comprising a plurality of quantum dots, wherein the emission layer is disposed between the first electrode and the second electrode; a first charge auxiliary layer disposed between the first electrode and the emission layer; and an optical functional layer disposed on the second electrode on a side opposite the emission layer, wherein the first electrode includes a reflecting electrode, wherein the second electrode is a light-transmitting electrode, wherein a region between the optical functional layer and the first electrode comprises a microcavity structure, and a refractive index of the optical functional layer is greater than or equal to a refractive index of the second electrode.

公开(公告)号：US11569469B2

公开(公告)日：2023-01-31

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：US12161005B2

公开(公告)日：2024-12-03

申请号：US17522316

申请日：2021-11-09

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Kwanghee Kim ,  Hongkyu Seo ,  Won Sik Yoon ,  Oul Cho ,  Tae Hyung Kim ,  Jaeyong Lee ,  Eun Joo Jang

IPC: H01L51/50 ,  H10K50/11 ,  H10K50/115 ,  H10K71/12 ,  H10K85/40 ,  H10K101/30 ,  H10K101/40

Abstract: A light emitting device including a first electrode and a second electrode each having a surface opposite the other, a light emitting layer disposed between the first electrode and the second electrode, and an electronic auxiliary layer disposed between the light emitting layer and the second electrode, wherein the electron auxiliary layer includes metal oxide nanoparticles and an orthosilicate compound.

公开(公告)号：US11251390B2

公开(公告)日：2022-02-15

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：US11171299B2

公开(公告)日：2021-11-09

申请号：US16296505

申请日：2019-03-08

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

IPC: H01L51/50 ,  C09K11/88 ,  H01L51/56 ,  B82Y20/00

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：US11171291B2

公开(公告)日：2021-11-09

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: H01L51/50 ,  H01L51/00 ,  H01L51/56 ,  H01L51/52

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.

公开(公告)号：US10446781B2

公开(公告)日：2019-10-15

申请号：US16001227

申请日：2018-06-06

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Hongkyu Seo ,  Eun Joo Jang ,  Dae Young Chung ,  Tae-Ho Kim ,  Sang Jin Lee

IPC: H01L29/08 ,  H01L51/50 ,  H01L51/52 ,  B82Y20/00 ,  B82Y30/00

Abstract: A quantum dot device includes an anode, a hole injection layer on the anode, a hole transport layer on the hole injection layer, a quantum dot layer on the hole transport layer, and a cathode on the quantum dot layer, wherein a highest occupied molecule orbital (HOMO) energy level of the quantum dot layer is greater than or equal to about 5.6 electronvolts (eV), a difference between a HOMO energy level of the hole transport layer and the highest occupied molecule orbital energy level of the quantum dot layer is less than about 0.5 eV, the hole injection layer has a first surface contacting the anode and a second surface contacting the hole transport layer, and a HOMO energy level of the first surface of the hole injection layer is different from a HOMO energy level of the second surface of the hole injection layer.