公开(公告)号：US20220119706A1

公开(公告)日：2022-04-21

申请号：US17502645

申请日：2021-10-15

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Soo Kyung KWON ,  Yong Wook KIM ,  Ji-Yeong KIM ,  Seon-Yeong KIM ,  Sungwoo HWANG

IPC: C09K11/88 ,  C09K11/02 ,  H01L51/50 ,  G02F1/13357

Abstract: A quantum dot composite that includes a matrix; and a plurality of quantum dots and titanium oxide particles dispersed in the matrix, wherein the quantum dots include zinc, tellurium, and selenium, the quantum dots do not comprise cadmium, lead, mercury, or a combination thereof, and in the quantum dot composite, a weight ratio of tellurium with respect to titanium is greater than or equal to about 1.5:1 and less than or equal to about 10:1.

公开(公告)号：US20220119705A1

公开(公告)日：2022-04-21

申请号：US17502542

申请日：2021-10-15

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sungwoo HWANG ,  Soo Kyung KWON ,  Yong Wook KIM ,  Seon-Yeong KIM ,  Ji-Yeong KIM

IPC: C09K11/88 ,  C09K11/02 ,  H01L51/50 ,  G02F1/13357

Abstract: Provided is a quantum dot having a core-shell structure, wherein a core includes a first semiconductor nanocrystal including zinc, tellurium, and selenium, and a semiconductor nanocrystal shell is disposed on the core and includes a Group II-VI compound, wherein the quantum dot further includes phosphorus and fluorine, and the quantum dot does not include cadmium.

公开(公告)号：US20250051641A1

公开(公告)日：2025-02-13

申请号：US18797895

申请日：2024-08-08

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： A Ra JO ,  Soo Kyung KWON ,  Seungrim YANG ,  Seon-Yeong KIM ,  Tae-Gon KIM ,  Jun Ho LEE ,  Mi Hye LIM

IPC: C09K11/62 ,  B82Y20/00 ,  B82Y40/00 ,  C09K11/58 ,  H01L33/16 ,  H01L33/26

Abstract: A semiconductor nanoparticle including a first semiconductor nanocrystal including silver, indium, gallium, and sulfur, and a semiconductor nanoparticle including a second semiconductor nanocrystal including zinc, gallium, and sulfur, a method of manufacturing the same, and an electronic device including the same. The semiconductor nanoparticle is configured to emit a green light. The green light has a peak emission wavelength of about 500 nanometers to about 580 nanometers. In the semiconductor nanoparticle, a molar ratio of zinc to indium is about 0.1:1 to about 10:1.

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：US20200217974A1

公开(公告)日：2020-07-09

申请号：US16825293

申请日：2020-03-20

Applicant: SAMSUNG ELECTRONICS CO., LTD. ,  SAMSUNG DISPLAY CO., LTD. ,  SAMSUNG SDI CO., LTD.

Inventor： Garam PARK ,  Tae Gon KIM ,  Nayoun WON ,  Shin Ae JUN ,  Soo Kyung KWON ,  Seon-Yeong KIM ,  Shang Hyeun PARK ,  Jooyeon AHN ,  Yuho WON ,  Eun Joo JANG ,  Hyo Sook JANG

IPC: G01T7/00 ,  A61B6/06 ,  G21K1/02 ,  A61B6/00

Abstract: Disclosed are a quantum dot population including a plurality of cadmium free quantum dots, a quantum dot polymer composite including the same, and a display device including the same. The plurality of cadmium free quantum dots includes: a semiconductor nanocrystal core comprising indium and phosphorous, a first semiconductor nanocrystal shell disposed on the semiconductor nanocrystal core and comprising zinc and selenium, and a second semiconductor nanocrystal shell disposed on the first semiconductor nanocrystal shell and comprising zinc and sulfur, wherein an average particle size of the plurality of cadmium free quantum dots is greater than or equal to about 5.5 nm, a standard deviation of particle sizes of the plurality of cadmium free quantum dots is less than or equal to about 20% of the average particle size, and an average solidity of the plurality of cadmium free quantum dots is greater than or equal to about 0.85.

公开(公告)号：US20190211265A1

公开(公告)日：2019-07-11

申请号：US16245594

申请日：2019-01-11

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Garam PARK ,  Tae Gon KIM ,  Nayoun WON ,  Shin Ae JUN ,  Soo Kyung KWON ,  Seon-Yeong KIM ,  Shang Hyeun PARK ,  Jooyeon AHN ,  Yuho WON ,  Eun Joo JANG ,  Hyo Sook JANG

IPC: C09K11/88 ,  C09K11/02 ,  H01L27/32 ,  F21V8/00 ,  G02F1/1335

CPC classification number: C09K11/883 ,  B82Y20/00 ,  B82Y40/00 ,  C09K11/025 ,  C09K11/565 ,  C09K11/70 ,  G02B6/005 ,  G02F1/133514 ,  G02F1/133617 ,  G02F2001/133614 ,  G02F2202/36 ,  H01L27/322 ,  H05B33/14

Abstract: Disclosed are a quantum dot population including a plurality of cadmium free quantum dots, a quantum dot polymer composite including the same, and a display device including the same. The plurality of cadmium free quantum dots includes: a semiconductor nanocrystal core comprising indium and phosphorous, a first semiconductor nanocrystal shell disposed on the semiconductor nanocrystal core and comprising zinc and selenium, and a second semiconductor nanocrystal shell disposed on the first semiconductor nanocrystal shell and comprising zinc and sulfur, wherein an average particle size of the plurality of cadmium free quantum dots is greater than or equal to about 5.5 nm, a standard deviation of particle sizes of the plurality of cadmium free quantum dots is less than or equal to about 20% of the average particle size, and an average solidity of the plurality of cadmium free quantum dots is greater than or equal to about 0.85.

公开(公告)号：US20230323204A1

公开(公告)日：2023-10-12

申请号：US18209563

申请日：2023-06-14

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Seon-Yeong KIM ,  Yong Wook KIM ,  Soo Kyung KWON ,  Ji-Yeong KIM ,  Sungwoo HWANG

IPC: C09K11/88 ,  C01G9/00 ,  C01B19/04 ,  C09K11/70 ,  C09K11/74 ,  B82Y40/00 ,  B82Y20/00

CPC classification number: C09K11/883 ,  C01G9/006 ,  C01B19/04 ,  C09K11/703 ,  C09K11/70 ,  C09K11/7414 ,  H10K50/115 ,  B82Y40/00 ,  B82Y20/00 ,  H10K2102/00 ,  C01P2006/60 ,  C01P2004/64

Abstract: A cadmium free quantum dot or a population thereof or a device including the same, wherein the cadmium free quantum dot includes a core (or a semiconductor nanocrystal particle) including a first semiconductor including a Group IIB-VI compound and a shell (or a coating) disposed on the core (or the semiconductor nanocrystal particle) including a Group IIB-V compound and exhibits a quantum efficiency of about 60% or higher.

公开(公告)号：US20230029597A1

公开(公告)日：2023-02-02

申请号：US17875208

申请日：2022-07-27

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

IPC: H01L27/15 ,  H01L33/24 ,  H01L33/50

Abstract: A display panel includes a light emitting panel including a light emitting unit; and a color conversion panel. The color conversion panel includes a color conversion layer including a color conversion region including semiconductor nanoparticles, and a partition wall defining the color conversion region. An optical diffuser is between the light emitting unit and the color conversion region to cover a light extraction surface of the light emitting unit. A length of the light extraction surface of the light emitting unit is greater than or equal to about 500 nm and less than or equal to about 100 μm and a ratio of a length of the optical diffuser to the length of the light extraction surface of the light emitting unit is greater than or equal to about 1.4:1 and less than or equal to about 60:1.

公开(公告)号：US20220119707A1

公开(公告)日：2022-04-21

申请号：US17502667

申请日：2021-10-15

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sungwoo HWANG ,  Yong Wook KIM ,  Soo Kyung KWON ,  Seon-Yeong KIM ,  Ji-Yeong KIM

IPC: C09K11/88 ,  C09K11/56 ,  C01G9/00

Abstract: A cadmium free quantum dot including a core that includes a first semiconductor nanocrystal including zinc, tellurium, and selenium, and a semiconductor nanocrystal shell that is disposed on the core and includes a zinc chalcogenide, wherein the quantum dot further includes magnesium and the mole ratio of Te:Se is greater than or equal to about 0.1:1 in the quantum dot; a production method thereof; and an electronic device including the same.