公开(公告)号：US11639467B2

公开(公告)日：2023-05-02

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: C09K11/00 ,  H01B1/00 ,  H01L27/00 ,  C09K11/88 ,  C09K11/02 ,  C09K11/08 ,  H01L27/32 ,  H01B1/06 ,  B82Y20/00 ,  B82Y40/00 ,  G02F1/1335 ,  G02F1/13357

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：US11525083B2

公开(公告)日：2022-12-13

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 ,  H01L27/32 ,  B82Y20/00 ,  C09K11/02 ,  F21V8/00 ,  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：US11505740B2

公开(公告)日：2022-11-22

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: H01L51/50 ,  C09K11/08 ,  C08L57/10 ,  G02F1/13357 ,  H01L27/32 ,  C09K11/02 ,  C09K11/56 ,  C09K11/70 ,  C09K11/88 ,  H05B33/14 ,  B82Y40/00 ,  B82Y20/00 ,  G02F1/1335

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：US11492549B2

公开(公告)日：2022-11-08

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 ,  H01L27/32 ,  B82Y20/00 ,  C09K11/02 ,  F21V8/00 ,  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：US11449672B2

公开(公告)日：2022-09-20

申请号：US16038893

申请日：2018-07-18

Applicant: Samsung Electronics Co., Ltd.

Inventor： Yong Wook Kim ,  Dong Kyu Lee ,  Ja Min Goo ,  Gang Heok Kim

IPC: G06F17/00 ,  G06F40/20 ,  H04R27/00 ,  G06F3/16 ,  G10L15/18 ,  G10L15/22 ,  H04R1/08

Abstract: Disclosed is an electronic device including a communication circuit, a microphone, a memory, speaker, and a processor, in which the processor receives the speech input and transmits first data associated with the speech input to a first server for supporting the speech recognition service, receives second data corresponding to processing of a part of the first data from the first server and outputs the second data at a first time that a first period of time has elapsed after the transmission of the first data, and outputs third data corresponding to processing of the rest of the first data at a second time that a second period of time has elapsed from the first time, while receiving the third data from the first server or a second server for supporting the speech recognition service before the second time.

公开(公告)号：US20210115333A1

公开(公告)日：2021-04-22

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: C09K11/88 ,  C09K11/56 ,  C01G9/08 ,  C01B19/00 ,  H01L27/32 ,  H01L51/50

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：US10673004B2

公开(公告)日：2020-06-02

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: 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%.

公开(公告)号：US12187942B2

公开(公告)日：2025-01-07

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 ,  C09K11/08 ,  C09K11/56 ,  F21V8/00 ,  G02F1/13357 ,  H10K59/12 ,  H10K59/38 ,  B82Y20/00 ,  B82Y40/00

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：US12187939B2

公开(公告)日：2025-01-07

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 ,  C09K11/88 ,  H01L29/12 ,  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：US12164193B2

公开(公告)日：2024-12-10

申请号：US18378606

申请日：2023-10-10

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.