Patents by Inventor Seon Yeong KIM

Seon Yeong KIM has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11603493
    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%.
    Type: Grant
    Filed: October 16, 2020
    Date of Patent: March 14, 2023
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jihyun Min, Sungwoo Hwang, Yong Wook Kim, Ji-Yeong Kim, Soo Kyung Kwon, Seon-Yeong Kim
  • Patent number: 11592699
    Abstract: The present invention is for a backplane substrate including an in-cell type touch panel advantageous to reducing the number of masks and the number of processes, a liquid crystal display device including the same, and a method of manufacturing the same, includes a plurality of interlayer dielectric layers disposed above a drain electrode of a thin film transistor are simultaneously patterned after forming a sensing line and a common electrode.
    Type: Grant
    Filed: March 15, 2022
    Date of Patent: February 28, 2023
    Assignee: LG Display Co., Ltd.
    Inventors: Seong-Pil Cho, Seon-Yeong Kim
  • Patent number: 11572504
    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.
    Type: Grant
    Filed: April 17, 2020
    Date of Patent: February 7, 2023
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ji-Yeong Kim, Soo Kyung Kwon, Seon-Yeong Kim, Yong Wook Kim, Eun Joo Jang
  • Publication number: 20230029597
    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 ?m 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.
    Type: Application
    Filed: July 27, 2022
    Publication date: February 2, 2023
    Inventors: Yong Wook KIM, Eun Joo JANG, Soo Kyung KWON, Seon-Yeong KIM, Ji-Yeong KIM, Sungwoo HWANG
  • Publication number: 20220406974
    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.
    Type: Application
    Filed: June 22, 2022
    Publication date: December 22, 2022
    Inventors: Seon-Yeong KIM, Yong Wook KIM, Soo Kyung KWON, Ji-Yeong KIM, Sungwoo HWANG
  • Patent number: 11525083
    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.
    Type: Grant
    Filed: April 17, 2020
    Date of Patent: December 13, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Soo Kyung Kwon, Seon-Yeong Kim, Yong Wook Kim, Ji-Yeong Kim, Eun Joo Jang
  • Patent number: 11492549
    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.
    Type: Grant
    Filed: April 17, 2020
    Date of Patent: November 8, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Soo Kyung Kwon, Seon-Yeong Kim, Yong Wook Kim, Ji-Yeong Kim, Eun Joo Jang
  • Publication number: 20220206328
    Abstract: The present invention is for a backplane substrate including an in-cell type touch panel advantageous to reducing the number of masks and the number of processes, a liquid crystal display device including the same, and a method of manufacturing the same, includes a plurality of interlayer dielectric layers disposed above a drain electrode of a thin film transistor are simultaneously patterned after forming a sensing line and a common electrode.
    Type: Application
    Filed: March 15, 2022
    Publication date: June 30, 2022
    Applicant: LG Display Co., Ltd.
    Inventors: Seong-Pil CHO, Seon-Yeong KIM
  • Publication number: 20220119705
    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.
    Type: Application
    Filed: October 15, 2021
    Publication date: April 21, 2022
    Inventors: Sungwoo HWANG, Soo Kyung KWON, Yong Wook KIM, Seon-Yeong KIM, Ji-Yeong KIM
  • Publication number: 20220119708
    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.
    Type: Application
    Filed: October 18, 2021
    Publication date: April 21, 2022
    Inventors: Seon-Yeong KIM, Yong Wook KIM, Soo Kyung KWON, Ji-Yeong KIM, Sungwoo HWANG
  • Publication number: 20220119707
    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.
    Type: Application
    Filed: October 15, 2021
    Publication date: April 21, 2022
    Inventors: Sungwoo HWANG, Yong Wook KIM, Soo Kyung KWON, Seon-Yeong KIM, Ji-Yeong KIM
  • Publication number: 20220119706
    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.
    Type: Application
    Filed: October 15, 2021
    Publication date: April 21, 2022
    Inventors: Soo Kyung KWON, Yong Wook KIM, Ji-Yeong KIM, Seon-Yeong KIM, Sungwoo HWANG
  • Patent number: 11300824
    Abstract: The present invention is for a backplane substrate including an in-cell type touch panel advantageous to reducing the number of masks and the number of processes, a liquid crystal display device including the same, and a method of manufacturing the same, includes a plurality of interlayer dielectric layers disposed above a drain electrode of a thin film transistor are simultaneously patterned after forming a sensing line and a common electrode.
    Type: Grant
    Filed: December 2, 2020
    Date of Patent: April 12, 2022
    Assignee: LG Display Co., Ltd.
    Inventors: Seong-Pil Cho, Seon-Yeong Kim
  • Patent number: 11193062
    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.
    Type: Grant
    Filed: March 20, 2020
    Date of Patent: December 7, 2021
    Assignees: SAMSUNG ELECTRONICS CO., LTD., SAMSUNG DISPLAY CO., LTD., SAMSUNG SDI CO.. LTD.
    Inventors: 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
  • Publication number: 20210348055
    Abstract: A quantum dot including a core including a first semiconductor nanocrystal including zinc, selenium, and tellurium, and a semiconductor nanocrystal shell disposed on the core, the semiconductor nanocrystal shell including zinc, and selenium, sulfur, or a combination thereof, wherein the quantum dot does not include cadmium, a mole ratio of tellurium relative to selenium in the first semiconductor nanocrystal is greater than about 1:1, a mole ratio of a sum of selenium and sulfur relative to in the quantum dot is greater than about 1:1, a wavelength of a maximum emission peak of the quantum dot is in a range of about 500 nanometers (nm) to about 550 nm, and the quantum dot has quantum efficiency (QY) of greater than or equal to about 30%, a quantum dot-polymer composite including the quantum dot, a display device including the quantum dot-polymer composite, and an electroluminescent device including the quantum dot.
    Type: Application
    Filed: April 29, 2021
    Publication date: November 11, 2021
    Inventors: Soo Kyung KWON, Yong Wook KIM, Seon-Yeong KIM, Ji-Yeong KIM, Jihyun MIN, Eun Joo JANG, Seonmyeong CHOI, Sungwoo HWANG
  • Publication number: 20210269715
    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.
    Type: Application
    Filed: February 26, 2021
    Publication date: September 2, 2021
    Inventors: Jihyun MIN, Soo Kyung KWON, Seon-Yeong KIM, Yong Wook KIM, Ji-Yeong KIM, Eun Joo JANG, Sungwoo HWANG
  • Publication number: 20210173247
    Abstract: The present invention is for a backplane substrate including an in-cell type touch panel advantageous to reducing the number of masks and the number of processes, a liquid crystal display device including the same, and a method of manufacturing the same, includes a plurality of interlayer dielectric layers disposed above a drain electrode of a thin film transistor are simultaneously patterned after forming a sensing line and a common electrode.
    Type: Application
    Filed: December 2, 2020
    Publication date: June 10, 2021
    Applicant: LG Display Co., Ltd.
    Inventors: Seong-Pil CHO, Seon-Yeong KIM
  • Publication number: 20210115332
    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%.
    Type: Application
    Filed: October 16, 2020
    Publication date: April 22, 2021
    Inventors: Seon-Yeong KIM, Soo Kyung KWON, Yong Wook KIM, Ji-Yeong KIM, Jihyun MIN, Sungwoo HWANG, Eun Joo JANG
  • Publication number: 20210115333
    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%.
    Type: Application
    Filed: October 16, 2020
    Publication date: April 22, 2021
    Inventors: Jihyun MIN, Sungwoo HWANG, Yong Wook Kim, Ji-Yeong Kim, Soo Kyung KWON, Seon-Yeong Kim
  • Patent number: 10935829
    Abstract: The present invention is for a backplane substrate including an in-cell type touch panel advantageous to reducing the number of masks and the number of processes, a liquid crystal display device including the same, and a method of manufacturing the same, includes a plurality of interlayer dielectric layers disposed above a drain electrode of a thin film transistor are simultaneously patterned after forming a sensing line and a common electrode.
    Type: Grant
    Filed: August 26, 2019
    Date of Patent: March 2, 2021
    Assignee: LG Display Co., Ltd.
    Inventors: Seong-Pil Cho, Seon-Yeong Kim