公开(公告)号：US20220190298A1

公开(公告)日：2022-06-16

申请号：US17688201

申请日：2022-03-07

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Moon Gyu HAN ,  Kwanghee KIM ,  Heejae LEE ,  Eun Joo JANG ,  Dae Young CHUNG

IPC: H01L51/52 ,  C09K11/88 ,  H01L51/00 ,  H01L51/50

Abstract: Provided are a light emitting device includes a first electrode and a second electrode facing each other; an emissive layer disposed between the first electrode and the second electrode and a display device including the same. The emissive layer comprises: a first emission layer disposed on the first electrode and having a hole transporting property; a second emission layer and a third emission layer disposed on the first emission layer; wherein the second emission layer comprises an organic compound having a bipolar transport property and the third emission layer has a composition different from the first emission layer and the second emission layer; wherein the first emission layer, the second emission layer, and the third emission layer comprises a plurality of quantum dots, and wherein the first emission layer, the second emission layer, and the third emission layer are configured to emit light of a same color.

公开(公告)号：US20220173342A1

公开(公告)日：2022-06-02

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 ,  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：US20210296608A1

公开(公告)日：2021-09-23

申请号：US17199977

申请日：2021-03-12

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Heejae LEE ,  Moon Gyu HAN ,  Won Sik YOON ,  Eun Joo JANG ,  Dae Young CHUNG ,  Tae Hyung KIM ,  Hyo Sook JANG

IPC: H01L51/50

Abstract: A quantum dot device including a first electrode and a second electrode each having a surface opposite the other, a quantum dot layer disposed between the first electrode and the second electrode, and an electron auxiliary layer disposed between the quantum dot layer and the second electrode, wherein the electron auxiliary layer includes inorganic nanoparticles including an alkaline-earth metal, and an alkali metal, an alkali metal compound, or a combination thereof, and an electronic device including the quantum dot device.

公开(公告)号：US20240215283A1

公开(公告)日：2024-06-27

申请号：US18419638

申请日：2024-01-23

Applicant: SAMSUNG ELECTRONICS CO., LTD

Inventor： Moon Gyu HAN ,  Heejae LEE ,  Eun Joo JANG ,  Tae Ho KIM ,  Kun Su PARK ,  Won Sik YOON ,  Hyo Sook JANG

IPC: H10K50/115 ,  H10K50/11 ,  H10K50/16 ,  H10K71/00 ,  H10K71/12 ,  H10K101/30 ,  H10K101/40

CPC classification number: H10K50/115 ,  H10K50/11 ,  H10K50/166 ,  H10K71/00 ,  H10K71/12 ,  H10K2101/30 ,  H10K2101/40

Abstract: A quantum dot light-emitting device including first electrode and a second electrode, a quantum dot layer between the first electrode and the second electrode, a first electron transport layer and a second electron layer disposed between the quantum dot layer and the second electrode. The second electron transport layer is disposed between the quantum dot layer and the first electron transport layer, wherein each of the first electron transport layer and the second electron transport layer includes an inorganic material. A lowest unoccupied molecular orbital energy level of the second electron transport layer is shallower than a lowest unoccupied molecular orbital energy level of the first electron transport layer, and a lowest unoccupied molecular orbital energy level of the quantum dot layer is shallower than a lowest unoccupied molecular orbital energy level of the second electron transport layer. An electronic device including the quantum dot light-emitting device.

公开(公告)号：US20240099045A1

公开(公告)日：2024-03-21

申请号：US18368010

申请日：2023-09-13

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Heejae LEE ,  Tae Ho KIM ,  Jun-Mo YOO ,  Ilyoung LEE ,  Shin Ae JUN ,  Dae Young CHUNG ,  Moon Gyu HAN

IPC: H10K50/115 ,  H10K50/828 ,  H10K71/12

CPC classification number: H10K50/115 ,  H10K50/828 ,  H10K71/12 ,  H10K2102/351

Abstract: Provided are an electroluminescent device, a method of manufacturing the same, and a display device including the same, the electroluminescent device including a first electron auxiliary layer, a first light emitting layer, and a first electrode disposed on a first surface of a transparent electrode; and a second electron auxiliary layer, a second light emitting layer, and a second electrode disposed on a second surface of the transparent electrode, wherein the first electron auxiliary layer and the second electron auxiliary layer each include a plurality of zinc oxide nanoparticles, a ratio (t1/t0) of a thickness (t1) of the first electron auxiliary layer to a thickness (t0) of the transparent electrode and a ratio (t2/t0) of a thickness (t2) of the second electron auxiliary layer to the thickness (t0) of the transparent electrode are each in the range of about 0.1 to about 4.0.

公开(公告)号：US20230209995A1

公开(公告)日：2023-06-29

申请号：US18146503

申请日：2022-12-27

Applicant: Samsung Electronics Co., Ltd.

Inventor： Moon Gyu HAN ,  Heejae LEE ,  Eun Joo JANG

IPC: H10K85/60 ,  C09K11/88 ,  C09K19/12

CPC classification number: H01L51/005 ,  C09K11/883 ,  C09K19/12 ,  H01L2251/5369

Abstract: An electroluminescent device including an anode, a cathode, and a light emitting layer disposed between the anode and the cathode, the light emitting layer includes a plurality of semiconductor nanoparticles; and an electron transport layer disposed between the light emitting layer and the cathode. The electron transport layer includes zinc oxide nanoparticles and an organic liquid crystal compound. A production method to the electroluminescent device or a display device is also disclosed.

公开(公告)号：US20210119161A1

公开(公告)日：2021-04-22

申请号：US17072436

申请日：2020-10-16

Applicant: SAMSUNG ELECTRONICS CO., LTD

Inventor： Moon Gyu HAN ,  Heejae LEE ,  Eun Joo JANG ,  Tae Ho KIM ,  Kun Su PARK ,  Won Sik YOON ,  Hyo Sook JANG

IPC: H01L51/50

Abstract: A quantum dot light-emitting device including first electrode and a second electrode, a quantum dot layer between the first electrode and the second electrode, a first electron transport layer and a second electron layer disposed between the quantum dot layer and the second electrode. The second electron transport layer is disposed between the quantum dot layer and the first electron transport layer, wherein each of the first electron transport layer and the second electron transport layer includes an inorganic material. A lowest unoccupied molecular orbital energy level of the second electron transport layer is shallower than a lowest unoccupied molecular orbital energy level of the first electron transport layer, and a lowest unoccupied molecular orbital energy level of the quantum dot layer is shallower than a lowest unoccupied molecular orbital energy level of the second electron transport layer. An electronic device including the quantum dot light-emitting device.

公开(公告)号：US20210091327A1

公开(公告)日：2021-03-25

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

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：US20200343487A1

公开(公告)日：2020-10-29

申请号：US16857727

申请日：2020-04-24

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Moon Gyu HAN ,  Kwanghee KIM ,  Heejae LEE ,  Eun Joo JANG ,  Dae Young CHUNG

IPC: H01L51/52 ,  H01L51/50 ,  H01L51/00 ,  C09K11/88

Abstract: Provided are a light emitting device includes a first electrode and a second electrode facing each other; an emissive layer disposed between the first electrode and the second electrode and a display device including the same. The emissive layer comprises: a first emission layer disposed on the first electrode and having a hole transporting property; a second emission layer and a third emission layer disposed on the first emission layer; wherein the second emission layer comprises an organic compound having a bipolar transport property and the third emission layer has a composition different from the first emission layer and the second emission layer; wherein the first emission layer, the second emission layer, and the third emission layer comprises a plurality of quantum dots, and wherein the first emission layer, the second emission layer, and the third emission layer are configured to emit light of a same color.