Patents by Inventor Geeing-Chuan Chern

Geeing-Chuan Chern 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).

  • Patent number: 6166954
    Abstract: A single-poly, floating gate memory cell includes a PMOS write and an NMOS read path. The memory cell's write path includes a PMOS half-transistor coupled in series with a PMOS write select transistor. The PMOS half-transistor serves as a storage element and includes a P+ drain region, a polysilicon floating gate, and a buried control gate. The read path includes an NMOS read transistor coupled in series with an NMOS read select transistor, where the floating gate of the PMOS half-transistor programming element serves as the gate of the NMOS read transistor. The memory cell is programmed along the PMOS write path by injecting electrons from a P-channel region of the PMOS half-transistor into the floating gate, and is read along the NMOS read path by conducting a channel current through an N-channel region of the NMOS read transistor.
    Type: Grant
    Filed: July 14, 1999
    Date of Patent: December 26, 2000
    Assignee: Programmable Microelectronics Corporation
    Inventor: Geeing-Chuan Chern