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.

公开(公告)号：US20230371297A1

公开(公告)日：2023-11-16

申请号：US18226737

申请日：2023-07-26

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Oul CHO ,  Kwanghee KIM ,  Eun Joo JANG

IPC: H01L31/00 ,  C09K11/62 ,  C09K11/70 ,  C09K11/54 ,  C09K11/61 ,  C09K11/88 ,  C09K11/02

CPC classification number: H10K50/115 ,  C09K11/623 ,  H10K71/00 ,  C09K11/70 ,  C09K11/54 ,  C09K11/61 ,  H10K50/13 ,  C09K11/883 ,  C09K11/025 ,  H10K2101/30

Abstract: A light emitting device including a first electrode and a second electrode facing each other, a quantum dot emission film disposed between the first electrode and the second electrode, and a charge auxiliary layer disposed between the emission film and the first electrode, between the emission film and the second electrode, or between the emission film and the first electrode and between the emission film and the second electrode, wherein the quantum dot emission film includes a first surface facing the charge auxiliary layer and an opposite second surface. A manufacturing method of making the light emitting device, and a display device including the same.

公开(公告)号：US20230075189A1

公开(公告)日：2023-03-09

申请号：US18048484

申请日：2022-10-21

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Kwanghee KIM ,  Moon Gyu HAN ,  Eun Joo JANG ,  Hyo Sook JANG

IPC: H01L51/50 ,  H01L51/56 ,  C09K11/02 ,  C09K11/88

Abstract: A light emitting device including a first electrode and a second electrode spaced from each other, and, a light emitting film between the first electrode and the second electrode, wherein the light emitting film has a first surface facing the second electrode and a second surface opposite thereto, the light emitting film includes a quantum dot layer including a plurality of quantum dots and a matrix including a metal chalcogenide, the plurality of quantum dots includes selenium, the matrix covers at least a portion of the quantum dot layer, the metal chalcogenide comprises zinc and sulfur, and in an X-ray photoelectron spectroscopic analysis of the first surface of the light emitting film, a mole ratio of zinc with respect to selenium is greater than or equal to about 2:1 and a mole ratio of sulfur with respect to selenium is greater than or equal to about 1.1:1.

公开(公告)号：US20220290048A1

公开(公告)日：2022-09-15

申请号：US17689061

申请日：2022-03-08

Applicant: Samsung Electronics Co., Ltd. ,  The Governing Council of the University of Toronto

Inventor： Eun Joo JANG ,  Kwanghee KIM ,  Seungjin Lee ,  Ted Sargent

IPC: C09K11/88 ,  H01L51/00 ,  C01B19/04 ,  C09K11/54 ,  C09K11/55 ,  C01G9/08 ,  C01G9/02

Abstract: A quantum dot device, a method of manufacturing the same, a thin film having a multilayered structure, and an electronic device including the same. The quantum dot device includes a first electrode and a second electrode, a quantum dot layer disposed between the first electrode and the second electrode, and a hole transport layer disposed between the quantum dot layer and the first electrode, wherein the hole transport layer includes a first hole transport layer including a three-dimensional structure perovskite thin film and a second hole transport layer including a two-dimensional structure perovskite thin film.

公开(公告)号：US20190276734A1

公开(公告)日：2019-09-12

申请号：US16297965

申请日：2019-03-11

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Kwanghee KIM ,  Jaejun CHANG ,  Oul CHO ,  Tae Hyung KIM ,  Sang Jin LEE ,  Eun Joo JANG ,  Young-soo JEONG ,  Moon Gyu HAN

IPC: C09K11/02 ,  C09K11/88 ,  H01L27/32 ,  H01L51/50

Abstract: A quantum dot, and a light emitting device including the same is provided. The quantum dot includes a semiconductor nanocrystal and an organic ligand bound to the surface of the semiconductor nanocrystal, wherein the organic ligand includes a first ligand derived from a first thiol compound including a C12 or more aliphatic hydrocarbon group, and a second ligand derived from a second thiol compound including a C8 or less aliphatic hydrocarbon group.

公开(公告)号：US20170188456A1

公开(公告)日：2017-06-29

申请号：US15133352

申请日：2016-04-20

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Youngjin CHO ,  Hyeon Cheol PARK ,  Kwanghee KIM ,  Weonho SHIN ,  Daejin YANG

IPC: H05K1/09 ,  H01L51/52 ,  G06F3/047 ,  H05K1/02

CPC classification number: H05K1/09 ,  G06F3/041 ,  G06F3/047 ,  G06F2203/04102 ,  H01B1/02 ,  H01B1/023 ,  H01B1/026 ,  H01B1/16 ,  H01L51/5206 ,  H01L51/5234 ,  H01L2251/301 ,  H01L2251/5338 ,  H05K1/0274 ,  H05K2201/0108 ,  H05K2201/0323 ,  H05K2201/0338 ,  H05K2201/0373 ,  H05K2201/0379 ,  H05K2201/0391 ,  H05K2201/09681 ,  H05K2201/10128

Abstract: A conductive component including: a substrate, a first layer comprising a plurality of island structures disposed on the substrate, wherein the island structures include graphene; and a second layer disposed on the first layer, wherein the second layer includes a plurality of conductive nanowires. Also, an electronic device including the conductive component.

公开(公告)号：US20240074222A1

公开(公告)日：2024-02-29

申请号：US18240451

申请日：2023-08-31

Applicant: Samsung Electronics Co., Ltd.

Inventor： Oul CHO ,  Kwanghee KIM ,  Yuho WON ,  Jae Yong LEE ,  Taehyung KIM

IPC: H10K50/115 ,  C09K11/56 ,  C09K11/88 ,  H10K50/16

CPC classification number: H10K50/115 ,  C09K11/565 ,  C09K11/883 ,  H10K50/16 ,  H10K2102/331

Abstract: An electroluminescent device includes a quantum dot layer disposed between a first electrode and a second electrode, and an electron transport layer disposed between the quantum dot layer and the second electrode; wherein the quantum dot layer is configured to emit a first light, the quantum dot layer including first quantum dots, wherein the first quantum dots include a first semiconductor nanocrystal, wherein the electron transport layer includes zinc oxide nanoparticles, wherein the electroluminescent device further comprises a first layer between the quantum dot layer and the electron transport layer, the first layer including inorganic nanoparticles, wherein the inorganic nanoparticles has a different composition from the zinc oxide nanoparticles and the first quantum dots, and wherein the inorganic nanoparticles comprises a metal chalcogenide having a bandgap energy of greater than or equal to about 2.9 electron volts (eV) and less than or equal to about 10 eV.

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：US20210257551A1

公开(公告)日：2021-08-19

申请号：US17171008

申请日：2021-02-09

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

IPC: H01L51/00

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, an electron transport layer disposed between the quantum dot layer and the second electrode and including first inorganic nanoparticles and a first organic material, and an electron injection layer disposed between the electron transport layer and the second electrode and including second inorganic nanoparticles and a second organic material, wherein a ratio by weight of an amount of the second organic material to a total amount of the second inorganic nanoparticles and the second organic material in the electron injection layer is less than a ratio by weight of an amount of the first organic material to a total amount of the first inorganic nanoparticles and the first organic material in the electron transport layer. An electronic device including the quantum dot device.

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.