Patents by Inventor Yuan-Chang Lu

Yuan-Chang Lu 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 COATED WITH BLUE-LIGHT ABSORPTION LAYER AND METHOD OF FORMING THE SAME
    Publication number: 20230361243
    Abstract: Provided is a light-emitting quantum dot coated with at least one blue-light absorption layer, including an alloy type core consisting of Cd, Se, Zn, and S, a first shell layer having a zinc blende structure and being coated on the surface of the alloy core, and at least one second shell layer having a wurtzite structure and being coated on a surface of the first shell layer, wherein the element ratio of each of Zn and S accounts for 30 to 50% of the overall core, and the content of Cd and Se gradually decreases outward from the core center. Also provided is a method for preparing the core-shell type light-emitting quantum dot. By having the alloy core, the first shell layer with a zinc blende structure, and the second shell layer with a wurtzite structure, the core-shell type quantum dot can achieve quantum efficiency of more than 95% and have high-temperature resistance and excellent water- and oxygen-barrier performance.
    Type: Application
    Filed: May 9, 2023
    Publication date: November 9, 2023
    Applicant: OPULENCE OPTRONICS CO., LTD.
    Inventors: Yuan-Chang LU, Shang-Wei CHOU
  • Core-shell type quantum dots and method of forming the same
    Patent number: 11515445
    Abstract: Provided is a core-shell type light-emitting quantum dot, including an alloy type core consisting of Cd, Se, Zn, and S, and a shell layer having a zinc blende structure and being coated on the surface of the alloy core, wherein the element ratio of each of Zn and S accounts for 30 to 50% of the overall core, and the content of Cd and Se gradually decreases outward from the core center. Also provided is a method for preparing the core-shell type light-emitting quantum dot. By having the alloy core and the shell layer with a zinc blende structure, the core-shell type quantum dot can achieve quantum efficiency of 95%, and have high temperature resistance and excellent water- and oxygen-barrier performance.
    Type: Grant
    Filed: February 25, 2020
    Date of Patent: November 29, 2022
    Assignee: OPULENCE OPTRONICS CO., LTD
    Inventors: Yuan-Chang Lu, Shang-Wei Chou
  • CORE-SHELL TYPE QUANTUM DOTS AND METHOD OF FORMING THE SAME
    Publication number: 20200274026
    Abstract: Provided is a core-shell type light-emitting quantum dot, including an alloy type core consisting of Cd, Se, Zn, and S, and a shell layer having a sphalerite structure and being coated on the surface of the alloy core, wherein the element ratio of each of Zn and S accounts for 30 to 50% of the overall core, and the content of Cd and Se gradually decreases outward from the core center. Also provided is a method for preparing the core-shell type light-emitting quantum dot.
    Type: Application
    Filed: February 25, 2020
    Publication date: August 27, 2020
    Inventors: Yuan-Chang Lu, Shang-Wei Chou