Patents by Inventor Yiyan Gong

Yiyan Gong 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).

  • BACKSIDE PROCESSING METHOD FOR BACK-ILLUMINATED PHOTOELECTRIC DEVICE
    Publication number: 20200212251
    Abstract: Embodiments of the present disclosure disclose a backside processing method for a back-illuminated photoelectric device. The backside processing method includes: mechanically thinning the back-illuminated photoelectric device such that a thickness of the back-illuminated photoelectric device reaches a first desired thickness; and chemically thinning and chemically polishing the back side of the mechanically thinned back-illuminated photoelectric device by using a nitric acid solution and a hydrofluoric acid solution such that the thickness of the mechanically thinned back-illuminated photoelectric device reaches a second desired thickness and a surface roughness of the back side of the back-illuminated photoelectric device reaches a desired surface roughness.
    Type: Application
    Filed: December 26, 2019
    Publication date: July 2, 2020
    Applicants: Tsinghua University, NUCTECH COMPANY LIMITED
    Inventors: Wenjian Zhang, Qingjun Zhang, Xiang Zou, Yiyan Gong