公开(公告)号：US20200332191A1

公开(公告)日：2020-10-22

申请号：US16851539

申请日：2020-04-17

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 ,  H01L27/32 ,  F21V8/00

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：US20200332190A1

公开(公告)日：2020-10-22

申请号：US16851520

申请日：2020-04-17

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

IPC: C09K11/88 ,  F21V8/00 ,  G02F1/13357 ,  H01L27/32 ,  C09K11/02

Abstract: A cadmium free quantum dot includes zinc, tellurium, and selenium, and lithium. A full width at half maximum of a maximum luminescent peak of the cadmium free quantum dot is less than or equal to about 50 nanometers and the cadmium free quantum dot has a quantum efficiency of greater than 1%.

公开(公告)号：US20190280231A1

公开(公告)日：2019-09-12

申请号：US16297833

申请日：2019-03-11

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 ,  C09K11/88 ,  H01L51/00

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：US20190211260A1

公开(公告)日：2019-07-11

申请号：US16245544

申请日：2019-01-11

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 ,  G02F1/1335 ,  H01L51/50 ,  H01L27/32

CPC classification number: C09K11/0883 ,  B82Y20/00 ,  B82Y40/00 ,  C08L57/10 ,  C08L2203/20 ,  C09K11/025 ,  C09K11/565 ,  C09K11/70 ,  C09K11/883 ,  G02F1/133617 ,  G02F2001/133614 ,  G02F2202/022 ,  G02F2202/102 ,  G02F2202/36 ,  H01L27/322 ,  H01L51/502 ,  H05B33/14

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：US20230374378A1

公开(公告)日：2023-11-23

申请号：US18224167

申请日：2023-07-20

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

IPC: C09K11/88 ,  C01G9/00 ,  C01G15/00 ,  C09K11/56 ,  C09K11/62 ,  C09K11/70 ,  C09K11/02

CPC classification number: C09K11/883 ,  C01G9/006 ,  C01G15/00 ,  C09K11/565 ,  C09K11/621 ,  C09K11/703 ,  C09K11/025 ,  B82Y20/00

Abstract: A quantum dot, a quantum dot-polymer composite, and an electronic device including the same. The quantum dot includes a core including a first semiconductor nanocrystal; a first shell including a second semiconductor nanocrystal including a Group III-VI compound on the core; and a second shell including a third semiconductor nanocrystal having a composition different from that of the second semiconductor nanocrystal on the first shell; wherein one of the first semiconductor nanocrystal and the third semiconductor nanocrystal includes a Group III-V compound.

公开(公告)号：US20230250336A1

公开(公告)日：2023-08-10

申请号：US18297033

申请日：2023-04-07

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

IPC: C09K11/88 ,  C09K11/02 ,  F21V8/00 ,  G02F1/13357 ,  C09K11/08 ,  C09K11/56 ,  H10K59/12 ,  H10K59/38

CPC classification number: C09K11/883 ,  C09K11/025 ,  G02B6/005 ,  G02F1/133617 ,  C09K11/88 ,  C09K11/0805 ,  C09K11/562 ,  H10K59/12 ,  H10K59/38 ,  B82Y20/00

Abstract: A cadmium free quantum dot includes zinc, tellurium, and selenium, and lithium. A full width at half maximum of a maximum luminescent peak of the cadmium free quantum dot is less than or equal to about 50 nanometers and the cadmium free quantum dot has a quantum efficiency of greater than 1%.

公开(公告)号：US20220406974A1

公开(公告)日：2022-12-22

申请号：US17846143

申请日：2022-06-22

Applicant: Samsung Electronics Co., Ltd.

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

IPC: H01L33/50 ,  C01G9/00 ,  C30B33/06

Abstract: Nanostructures including a first semiconductor nanocrystal including zinc and selenium, and a second semiconductor nanocrystal including a zinc chalcogenide, wherein a composition of the second semiconductor nanocrystal is different from a composition of the first semiconductor nanocrystal, wherein the nanostructures further include tellurium, wherein in the nanostructures, a mole ratio of selenium to tellurium is greater than or equal to about 0.83:1 and less than or equal to about 10:1, wherein a derivative thermogravimetry curve of the nanostructures has an extreme value in a temperature range of greater than or equal to about 250° C. and less than or equal to about 420° C.

公开(公告)号：US20220342259A1

公开(公告)日：2022-10-27

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: G02F1/13357 ,  G02F1/1335

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：US20220119708A1

公开(公告)日：2022-04-21

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 ,  H01L51/50 ,  C01B19/04 ,  C09K11/70 ,  C01G9/00

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：US20220017818A1

公开(公告)日：2022-01-20

申请号：US17490552

申请日：2021-09-30

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 ,  H01L51/50 ,  H01L27/32 ,  C09K11/02 ,  C09K11/56 ,  C09K11/70 ,  C09K11/88 ,  H05B33/14

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.