Patents by Inventor Yong Dae So

Yong Dae So 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).

  • MICROSPEAKER HAVING A FLEXIBLE PRINTED CIRCUIT BOARD AS A DIAPHRAGM
    Publication number: 20230156405
    Abstract: A microspeaker in which a diaphragm and a voice coil are replaced with a flexible printed circuit board (FPCB) is provided. The microspeaker includes: a magnetic circuit having a yoke and a magnet; and an FPCB diaphragm installed on the magnetic circuit and having a conductive coil pattern formed on a non-conductive film. When an electric signal is applied to the conductive coil pattern of the FPCB diaphragm, the FPCB diaphragm vibrates by mutual electromagnetic force with the magnetic circuit to generate sound.
    Type: Application
    Filed: November 14, 2022
    Publication date: May 18, 2023
    Inventors: Byung Min Yu, Jae Hwa Lim, Young Uk Jo, Yong Hee Oh, Yong Dae So