Patents by Inventor CAI-PING ZENG

CAI-PING ZENG 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).

  • TRANSPARENT AND TINT-FREE POLYIMIDE FILM, PREPARATION METHOD THEREOF AND OPTICAL POLYIMIDE FILM
    Publication number: 20210301132
    Abstract: A transparent and tint-free polyimide film, a preparation method thereof and an optical PI film are provided in the disclosure. The transparent and tint-free polyimide film not only has excellent light transmittance (?85% @500 nm), but also has high modulus (tensile modulus?3.8 GPa) and low coefficient of thermal expansion (?30 ppm/Celsius, 50-200 Celsius) and other characteristics, so as to the transparent and tint-free polyimide film can meet the needs of flexible optoelectronic display devices.
    Type: Application
    Filed: July 15, 2020
    Publication date: September 30, 2021
    Inventors: CAI-PING ZENG, YING JIN