Patents by Inventor Doh Chang LEE

Doh Chang LEE 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).

  • QUANTUM DOTS HAVING ACTIVITY OF KILLING MULTIDRUG-RESISTANT BACTERIA (MDR) AND USES THEREOF
    Publication number: 20230051336
    Abstract: Disclosed are inorganic nanoparticle quantum dots that effectively kill Gram-positive and Gram-negative bacteria resistant to antibiotics and the treatment of infectious bacterial diseases using the same, and more particularly inorganic nanoparticle quantum dots introduced with a hydrophilic ligand having activity of killing multidrug-resistant bacteria (MDR) and the use thereof. The quantum dots are capable of effectively killing bacteria when used at a low concentration by optimizing the core bandgap thereof and also do not exhibit cytotoxicity, and are thus useful as an agent for preventing or treating infectious diseases caused by multidrug-resistant bacteria.
    Type: Application
    Filed: August 12, 2022
    Publication date: February 16, 2023
    Inventors: Doh Chang LEE, Ilsong LEE, Sungjun KOH, Gui-Min KIM
  • QUANTUM DOT, COLOR CONVERSION PANEL, AND DISPLAY DEVICE INCLUDING THE SAME
    Publication number: 20200319516
    Abstract: A quantum dot, a color conversion panel, and a display device, the quantum dot including a core; and a shell layer positioned outside of the core, wherein at least one of the core and the shell layer is doped with aluminum, silicon, titanium, magnesium, or zinc, and the core includes a Group III-V compound.
    Type: Application
    Filed: June 23, 2020
    Publication date: October 8, 2020
    Inventors: Kyoung Won PARK, Baek Hee LEE, Min Ki NAM, Hyeok Jin LEE, Keun Chan OH, Jae Jin LYU, Baek Kyun JEON, Sungjun KOH, Doh Chang LEE
  • Quantum dot, color conversion panel, and display device including the same
    Patent number: 10725340
    Abstract: A quantum dot, a color conversion panel, and a display device, the quantum dot including a core; and a shell layer positioned outside of the core, wherein at least one of the core and the shell layer is doped with aluminum, silicon, titanium, magnesium, or zinc, and the core includes a Group III-V compound.
    Type: Grant
    Filed: November 8, 2017
    Date of Patent: July 28, 2020
    Assignees: Samsung Display Co., Ltd., Korea Advanced Institute of Science and Technology
    Inventors: Kyoung Won Park, Baek Hee Lee, Min Ki Nam, Hyeok Jin Lee, Keun Chan Oh, Jae Jin Lyu, Baek Kyun Jeon, Sungjun Koh, Doh Chang Lee
  • MANUFACTURING METHOD OF QUANTUM DOT
    Publication number: 20180291268
    Abstract: A method of manufacturing a quantum dot, the method including preparing a CdS/CdSe/CdS quantum dot that includes a CdS-containing first core, a CdSe-containing second core, and a CdS-containing shell; forming a Cu2S/Cu2Se/Cu2S quantum dot by injecting the CdS/CdSe/CdS quantum dot into a solution containing a Cu precursor; and forming a ZnS/ZnSe/ZnS quantum dot by injecting the Cu2S/Cu2Se/Cu2S quantum dot into a solution containing a Zn precursor.
    Type: Application
    Filed: January 3, 2018
    Publication date: October 11, 2018
    Inventors: Min Ki NAM, Kyoung Won PARK, Keun Chan OH, Jae Jin LYU, Baek Hee LEE, Hyeok Jin LEE, Jaikyeong KIM, Heesuk KIM, Wan Ki BAE, Doh Chang LEE
  • QUANTUM DOT, COLOR CONVERSION PANEL, AND DISPLAY DEVICE INCLUDING THE SAME
    Publication number: 20180231843
    Abstract: A quantum dot, a color conversion panel, and a display device, the quantum dot including a core; and a shell layer positioned outside of the core, wherein at least one of the core and the shell layer is doped with aluminum, silicon, titanium, magnesium, or zinc, and the core includes a Group III-V compound.
    Type: Application
    Filed: November 8, 2017
    Publication date: August 16, 2018
    Inventors: Kyoung Won PARK, Baek Hee LEE, Min Ki NAM, Hyeok Jin LEE, Keun Chan OH, Jae Jin LYU, Baek Kyun JEON, Sungjun KOH, Doh Chang LEE
  • Quantum dot stabilized by halogen salt and method for manufacturing the same
    Patent number: 9517936
    Abstract: A quantum dot stabilized by a halogen salt includes a compound of Group 13 and Group 15, a compound of Group 12 and Group 16 or a compound of Group 14 and Group 16. The quantum dot has a crystalline structure and at least a portion of a surface of the quantum dot is combined with a halogen salt. Thus, the quantum dot has a high stability in an air.
    Type: Grant
    Filed: April 3, 2015
    Date of Patent: December 13, 2016
    Assignee: KOREA INSTITUTE OF MACHINERY & MATERIALS
    Inventors: Sohee Jeong, Ju Young Woo, Doh Chang Lee, Won Seok Chang, Duck Jong Kim
  • QUANTUM DOT STABILIZED BY HALOGEN SALT AND METHOD FOR MANUFACTURING THE SAME
    Publication number: 20150291422
    Abstract: A quantum dot stabilized by a halogen salt includes a compound of Group 13 and Group 15, a compound of Group 12 and Group 16 or a compound of Group 14 and Group 16. The quantum dot has a crystalline structure and at least a portion of a surface of the quantum dot is combined with a halogen salt. Thus, the quantum dot has a high stability in an air.
    Type: Application
    Filed: April 3, 2015
    Publication date: October 15, 2015
    Inventors: Sohee JEONG, Ju Young WOO, Doh Chang LEE, Won Seok CHANG, Duck Jong KIM