公开(公告)号：US12065604B2

公开(公告)日：2024-08-20

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: C09K11/02 ,  C09K11/88 ,  G02F1/13357 ,  H01L51/50 ,  H10K50/115 ,  B82Y20/00 ,  B82Y40/00

CPC classification number: C09K11/883 ,  C09K11/02 ,  G02F1/133617 ,  H10K50/115 ,  B82Y20/00 ,  B82Y40/00

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：US11845888B2

公开(公告)日：2023-12-19

申请号：US17989035

申请日：2022-11-17

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Yuho Won ,  Nayoun Won ,  Sungwoo Hwang ,  Eun Joo Jang ,  Soo Kyung Kwon ,  Yong Wook Kim ,  Jihyun Min ,  Garam Park ,  Shang Hyeun Park ,  Hyo Sook Jang ,  Shin Ae Jun ,  Yong Seok Han

IPC: C09K11/08 ,  C08L57/10 ,  G02F1/13357 ,  C09K11/02 ,  C09K11/56 ,  C09K11/70 ,  C09K11/88 ,  H05B33/14 ,  H10K50/115 ,  H10K59/38 ,  B82Y40/00 ,  B82Y20/00 ,  G02F1/1335

CPC classification number: C09K11/0883 ,  C08L57/10 ,  C09K11/025 ,  C09K11/565 ,  C09K11/70 ,  C09K11/883 ,  G02F1/133617 ,  H05B33/14 ,  H10K50/115 ,  H10K59/38 ,  B82Y20/00 ,  B82Y40/00 ,  C08L2203/20 ,  G02F1/133614 ,  G02F2202/022 ,  G02F2202/102 ,  G02F2202/36

Abstract: A cadmium free quantum dot not including cadmium and including: 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, a composition and composite including the same, and an electronic device.

公开(公告)号：US11718789B2

公开(公告)日：2023-08-08

申请号：US17503436

申请日：2021-10-18

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Seon-Yeong Kim ,  Yong Wook Kim ,  Soo Kyung Kwon ,  Ji-Yeong Kim ,  Sungwoo Hwang

IPC: C09K11/88 ,  C01B19/04 ,  C01G9/00 ,  C09K11/70 ,  H10K50/115 ,  C09K11/74 ,  B82Y20/00 ,  B82Y40/00 ,  H10K102/00

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

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：US11634628B2

公开(公告)日：2023-04-25

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: C09K11/62 ,  C09K11/70 ,  H01L29/12 ,  C09K11/88 ,  H01L27/32

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：US11572504B2

公开(公告)日：2023-02-07

申请号：US16851509

申请日：2020-04-17

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Ji-Yeong Kim ,  Soo Kyung Kwon ,  Seon-Yeong Kim ,  Yong Wook Kim ,  Eun Joo Jang

IPC: C09K11/54 ,  C09K11/64 ,  C09K11/02 ,  C09K11/57 ,  C09K11/58 ,  C09K11/88 ,  B82Y20/00

Abstract: A core-shell quantum dot comprising zinc, a core comprising a first semiconductor nanocrystal material; and a semiconductor nanocrystal shell disposed on the core, wherein the core-shell quantum dot does not comprise cadmium, and does comprise zinc, tellurium, selenium, and aluminum.

公开(公告)号：US12043780B2

公开(公告)日：2024-07-23

申请号：US18070635

申请日：2022-11-29

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Soo Kyung Kwon ,  Seon-Yeong Kim ,  Yong Wook Kim ,  Ji-Yeong Kim ,  Eun Joo Jang

IPC: C09K11/88 ,  C09K11/02 ,  F21V8/00 ,  H10K59/12 ,  H10K59/38 ,  B82Y20/00 ,  B82Y40/00

CPC classification number: C09K11/883 ,  C09K11/025 ,  G02B6/005 ,  H10K59/12 ,  H10K59/38 ,  B82Y20/00 ,  B82Y40/00

Abstract: A quantum dot comprising zinc, tellurium, and selenium and not comprising cadmium, wherein a maximum luminescent peak of the quantum dot is present in a wavelength range of greater than about 470 nanometers (nm) and a quantum efficiency of the quantum dot is greater than or equal to about 10%, and wherein the quantum dot comprises a core comprising a first semiconductor nanocrystal and a semiconductor nanocrystal shell disposed on the core.

公开(公告)号：US11809040B2

公开(公告)日：2023-11-07

申请号：US17726033

申请日：2022-04-21

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Yong Wook Kim ,  Soo Kyung Kwon ,  Jaeyong Lee

IPC: G02F1/1335 ,  G02F1/13357

CPC classification number: G02F1/133603 ,  G02F1/133514 ,  G02F1/133617

Abstract: A display device includes a display panel, a backlight unit, and a light conversion sheet between the display panel and the backlight unit. The backlight unit includes a substrate and light-emitting sections arranged on the substrate, one or more light sources are disposed in each of the light-emitting sections, the light conversion sheet includes first partition walls and light conversion sections arranged to correspond to the light-emitting sections, a first partition wall of the first partition walls is disposed between adjacent light conversion sections of the light conversion sections. Each of the light conversion sections includes first quantum dots emitting a first light and second quantum dots emitting a second light having a color different from a color of the first light, and the at least one light source provides light of a predetermined wavelength to the light conversion sheet.

公开(公告)号：US11692136B2

公开(公告)日：2023-07-04

申请号：US17072335

申请日：2020-10-16

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Seon-Yeong Kim ,  Soo Kyung Kwon ,  Yong Wook Kim ,  Ji-Yeong Kim ,  Jihyun Min ,  Sungwoo Hwang ,  Eun Joo Jang

IPC: C09K11/88 ,  C09K11/54 ,  C09K11/56 ,  C09K11/06 ,  C01G9/00 ,  C01G9/08 ,  H01L27/32 ,  G02F1/13357 ,  H10K59/38 ,  F21V8/00 ,  G02F1/1335

CPC classification number: C09K11/883 ,  C01G9/006 ,  C01G9/08 ,  C09K11/06 ,  C09K11/54 ,  C09K11/565 ,  G02F1/133621 ,  H10K59/38 ,  C01P2004/64 ,  C01P2004/90 ,  C01P2006/60 ,  G02B6/005 ,  G02F1/133614 ,  G02F2202/36

Abstract: A core-shell quantum dot including a core including a first semiconductor nanocrystal, the first semiconductor nanocrystal including zinc, tellurium, and selenium and a semiconductor nanocrystal shell disposed on the core, the semiconductor nanocrystal shell including zinc and selenium, sulfur, or a combination thereof and a production thereof are disclosed, wherein the core-shell quantum dot does not include cadmium, lead, mercury, or a combination thereof, wherein the core-shell quantum dot(s) includes chlorine, wherein in the core-shell quantum dot, a mole ratio of chlorine with respect to tellurium is greater than or equal to about 0.01:1 and wherein a quantum efficiency of the core-shell quantum dot is greater than or equal to about 10%.

公开(公告)号：US11603493B2

公开(公告)日：2023-03-14

申请号：US17072440

申请日：2020-10-16

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jihyun Min ,  Sungwoo Hwang ,  Yong Wook Kim ,  Ji-Yeong Kim ,  Soo Kyung Kwon ,  Seon-Yeong Kim

IPC: H01L29/08 ,  C09K11/88 ,  C01B19/00 ,  C01G9/08 ,  C09K11/56 ,  H01L27/32 ,  H01L51/50 ,  B82Y20/00 ,  B82Y40/00 ,  F21V8/00

Abstract: A core shell quantum dot including a core including a first semiconductor nanocrystal and including zinc, tellurium, and selenium and a semiconductor nanocrystal shell disposed on the core and including a zinc chalcogenide, a method of manufacture thereof, and a device including the same are disclosed, wherein the core shell quantum dot does not include cadmium, lead, mercury, or a combination thereof, wherein in an X-ray photoelectron spectrum of the quantum dot, a peak area for Te oxide to a peak area for Te3d5/2 as an area percentage is less than or equal to about 25%.

公开(公告)号：US11011721B2

公开(公告)日：2021-05-18

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

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%.