Patents by Inventor Ling-Shine Lee

Ling-Shine Lee 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: 9583589
    Abstract: A method for fabricating a double-recess gate structure for an FET device that includes providing a semiconductor wafer having a plurality of semiconductor layers and depositing an EBL resist layer on the wafer. The method also includes patterning the EBL resist layer to form an opening in the EBL resist layer and performing a first wet etch to form a first recess in the wafer. The method further includes depositing a dielectric layer over the EBL resist layer and into the first recess and performing a dry etch to remove a portion of the dielectric layer in the first recess. The method also includes performing a second wet etch through the opening in the dielectric layer to form a second recess, and depositing a gate metal layer in the first and second recesses and in the opening in the EBL resist layer to form a gate terminal.
    Type: Grant
    Filed: October 14, 2015
    Date of Patent: February 28, 2017
    Assignee: Northrop Grumman Systems Corporation
    Inventors: Xiaobing Mei, Ling-Shine Lee, Michael D. Lange, Wayne Yoshida, Po-Hsin Liu