公开(公告)号：US20200024512A1

公开(公告)日：2020-01-23

申请号：US16519188

申请日：2019-07-23

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jihyun MIN ,  Seon-Yeong KIM ,  Eun Joo JANG ,  Hyo Sook JANG ,  Soo Kyung KWON ,  Yong Wook KIM

IPC: C09K11/70 ,  C09K11/62 ,  C09K11/88 ,  H01L29/12

Abstract: A quantum dot including a semiconductor nanocrystal core and a semiconductor nanocrystal shell disposed on the core and does not include cadmium, wherein the core includes a Group III-V compound, the quantum dot has a maximum photoluminescence peak in a green light wavelength region, a full width at half maximum (FWHM) of the maximum photoluminescence peak is less than about 50 nanometers (nm), and a difference between a wavelength of the maximum photoluminescence peak and a first absorption peak wavelength of the quantum dot is less than or equal to about 25 nanometers, and a production method thereof.

公开(公告)号：US20230303924A1

公开(公告)日：2023-09-28

申请号：US18204465

申请日：2023-06-01

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jihyun MIN ,  Soo Kyung KWON ,  Seon-Yeong KIM ,  Yong Wook KIM ,  Ji-Yeong KIM ,  Eun Joo JANG ,  Sungwoo HWANG

IPC: C09K11/88 ,  C09K11/02 ,  H10K50/115 ,  H10K59/38

CPC classification number: C09K11/883 ,  C09K11/02 ,  H10K50/115 ,  H10K59/38 ,  G02F2202/36 ,  B82Y40/00

Abstract: A quantum dot including a core and a shell disposed on an outer surface of the core. The core includes a first semiconductor nanocrystal including a Group II-VI compound. The shell includes a second semiconductor nanocrystal. An effective mass of the second semiconductor nanocrystal is about 0.5 times to about 2.0 times an effective mass of the first semiconductor nanocrystal and the quantum dot does not include cadmium, lead, mercury, or a combination thereof.

公开(公告)号：US20230250333A1

公开(公告)日：2023-08-10

申请号：US18130453

申请日：2023-04-04

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jihyun MIN ,  Seon-Yeong KIM ,  Eun Joo JANG ,  Hyo Sook JANG ,  Soo Kyung KWON ,  Yong Wook KIM

IPC: C09K11/70 ,  C09K11/62 ,  H01L29/12 ,  C09K11/88

CPC classification number: C09K11/70 ,  C09K11/62 ,  H01L29/122 ,  C09K11/883 ,  H10K59/38

Abstract: A quantum dot including a semiconductor nanocrystal core and a semiconductor nanocrystal shell disposed on the core and does not include cadmium, wherein the core includes a Group III-V compound, the quantum dot has a maximum photoluminescence peak in a green light wavelength region, a full width at half maximum (FWHM) of the maximum photoluminescence peak is less than about 50 nanometers (nm), and a difference between a wavelength of the maximum photoluminescence peak and a first absorption peak wavelength of the quantum dot is less than or equal to about 25 nanometers, and a production method thereof.

公开(公告)号：US20220025260A1

公开(公告)日：2022-01-27

申请号：US17497208

申请日：2021-10-08

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jihyun MIN ,  Eun Joo JANG ,  Yong Wook KIM

IPC: C09K11/88 ,  C09K11/02 ,  C09K11/08 ,  H01L27/32 ,  H01B1/06

Abstract: A nanoplatelet including a two-dimensional template including a first semiconductor nanocrystal; and a first shell including a second semiconductor nanocrystal disposed on a surface of the two-dimensional template, the second semiconductor nanocrystal having a composition different from the first semiconductor nanocrystal, wherein the second semiconductor nanocrystal includes a Group III-V compound, and wherein the nanoplatelet does not include cadmium.

公开(公告)号：US20210192924A1

公开(公告)日：2021-06-24

申请号：US16650138

申请日：2018-10-29

Applicant: Samsung Electronics Co., Ltd.

Inventor： Chan Won LEE ,  Yong Wook KIM

IPC: G08B21/22 ,  G08B13/08 ,  G08B29/18

Abstract: Disclosed is an electronic device comprising: a communication circuit, at least one sensor for sensing an open-or-closed state of a door and a person near the door, a processor electrically connected to the communication circuit and the at least one sensor, and a memory electrically connected to the processor.

公开(公告)号：US20200266373A1

公开(公告)日：2020-08-20

申请号：US16863164

申请日：2020-04-30

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Tae Hyung KIM ,  Eun Joo JANG ,  Dae Young CHUNG ,  Yong Wook KIM ,  Yuho WON ,  Oul CHO

IPC: H01L51/50 ,  H01L51/00 ,  C09K11/88 ,  H05B33/14 ,  C09K11/02 ,  H01L27/32

Abstract: An electroluminescence display device, including a first electrode and a second electrode facing each other; a quantum dot emission layer disposed between the first electrode and the second electrode, the quantum dot emission layer including a plurality of quantum dots and not including cadmium, wherein the quantum dot emission layer includes a red emission layer disposed in a red pixel, a green emission layer disposed in a green pixel, and a blue emission layer disposed in a blue pixel, wherein the device has color reproducibility according to a DCI standard of greater than or equal to about 89%.

公开(公告)号：US20200224094A1

公开(公告)日：2020-07-16

申请号：US16739595

申请日：2020-01-10

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Yuho WON ,  Yong Wook KIM ,  Eun Joo JANG ,  Hyo Sook JANG

IPC: C09K11/88 ,  C09K11/54 ,  C09K11/56 ,  H01L33/06 ,  H01L33/28

Abstract: A quantum dot having a core including a first semiconductor nanocrystal including zinc, selenium, and tellurium, and a semiconductor nanocrystal shell disposed on the surface of the core, the shell including zinc, selenium, and sulfur. The quantum dot is configured to emit green light, the quantum dot does not include cadmium, and the quantum dot has a mole ratio Te:Se of tellurium relative to selenium of greater than about 0.05 and less than or equal to about 0.5:1. A method of producing the quantum dot and an electronic device including the same.