Patents by Inventor CHANG HWAN KWAK

CHANG HWAN KWAK 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).

  • Light-emitting device and light-emitting display device including the same
    Patent number: 11943985
    Abstract: Discussed are a light-emitting device and a light-emitting display device having improved efficiency and increased lifespan. A plurality of stacks is provided between an anode and a cathode for at least a subpixel to emit a predetermined color, and emissive layers in different stacks include the same color-based materials having different luminous properties.
    Type: Grant
    Filed: June 7, 2021
    Date of Patent: March 26, 2024
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Jin Ho Park, Kyu Il Han, Chang Hwan Kwak, Dong Hyeok Lim, Hwa Yong Shin, Ji Hyung Lee
  • LIGHT-EMITTING DEVICE AND LIGHT-EMITTING DISPLAY DEVICE INCLUDING THE SAME
    Publication number: 20220208876
    Abstract: Discussed are a light-emitting device and a light-emitting display device having improved efficiency and increased lifespan. A plurality of stacks is provided between an anode and a cathode for at least a subpixel to emit a predetermined color, and emissive layers in different stacks include the same color-based materials having different luminous properties.
    Type: Application
    Filed: June 7, 2021
    Publication date: June 30, 2022
    Applicant: LG Display Co., Ltd.
    Inventors: JIN HO PARK, KYU IL HAN, CHANG HWAN KWAK, DONG HYEOK LIM, HWA YONG SHIN, JI HYUNG LEE