Patents by Inventor MING-KUEI CHI

MING-KUEI CHI 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).

  • THIN FILM LOUDSPEAKER AND ELECTRONIC DEVICE WITH LOUDSPEAKER
    Publication number: 20230132801
    Abstract: A loudspeaker includes a first electrode layer, a second electrode layer arranged opposite to the first electrode layer, a piezoelectric layer between the first electrode layer and the second electrode layer. The first electrode layer is configured for receiving a first driving voltage. The second electrode layer is configured for receiving a second driving voltage. The piezoelectric layer having an outer contour that is smooth. The piezoelectric layer is configured for making sound by generating mechanical vibration according to the first driving voltage and the second driving voltage.
    Type: Application
    Filed: December 27, 2021
    Publication date: May 4, 2023
    Inventors: MING-KUEI CHI, SHIH-CHIEH HUANG