Patents by Inventor YUNG-CHU CHUANG

YUNG-CHU CHUANG 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).

  • Publication number: 20240076451
    Abstract: Provide a black matte polyimide film, including polyimide in an amount from 87 to 97 wt % of the black matte polyimide film, in which aromatic dianhydride and aromatic diamine are polymerized to form a polyimide precursor, and the polyimide precursor is chemically cyclized to form the polyimide, wherein the aromatic dianhydride at least includes 3,3?,4,4?-biphenyltetracarboxylic dianhydride in an amount being no less than 20 mol % of the aromatic dianhydride, and the aromatic diamine at least includes p-phenylenediamine in an amount from 5 to 40 mol % of the aromatic diamine; carbon black in an amount from 2 to 8 wt % of the black matte polyimide film; and silicon dioxide powder having a particle size between 1 and 10 ?m and a density less than 1 g/cm3 and being in an amount from 1 to 5 wt % of the polyimide film.
    Type: Application
    Filed: August 29, 2023
    Publication date: March 7, 2024
    Inventors: YUNG-CHU CHUANG, YI-HSUEH HO, TING-XUAN DENG