Patents by Inventor Yu Kyoung Choi

Yu Kyoung Choi 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).

  • Method of manufacturing polyimide film
    Patent number: 11596065
    Abstract: Provided are a polyimide film capable of reducing a dielectric constant of a substrate and reducing a thickness and forming a stable via with a low possibility of disconnection, a method for manufacturing the same, and an FPCB including the same. A polyimide film according to an exemplary embodiment of the present invention includes a polyimide layer and a plurality of fluororesin particles dispersed in the polyimide layer. The fluororesin particles have a spherical or flat shape.
    Type: Grant
    Filed: January 19, 2022
    Date of Patent: February 28, 2023
    Inventor: Yu Kyoung Choi
  • POLYIMIDE FILM, METHOD OF MANUFACTURING THE SAME, AND FLEXIBLE PRINTED CIRCUIT BOARD HAVING THE SAME
    Publication number: 20220256697
    Abstract: Provided are a polyimide film capable of reducing a dielectric constant of a substrate and reducing a thickness and forming a stable via with a low possibility of disconnection, a method for manufacturing the same, and an FPCB including the same. A polyimide film according to an exemplary embodiment of the present invention includes a polyimide layer and a plurality of fluororesin particles dispersed in the polyimide layer. The fluororesin particles have a spherical or flat shape.
    Type: Application
    Filed: January 19, 2022
    Publication date: August 11, 2022
    Inventor: Yu Kyoung Choi