Patents by Inventor Joyeeta Nag

Joyeeta Nag 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: 20150279733
    Abstract: The present invention relates generally to forming interconnects over contacts and more particularly, to a method and structure for filling interconnect trenches with a sacrificial filler material before removal of a hard mask layer to protect the liners of the contacts from damage during the removal process. A method is disclosed that may include: filling an opening in a dielectric layer above a contact and a contact liner with a sacrificial filler material, such that the contact liner is completely covered by the sacrificial filler material; removing a hard mask layer used to pattern and form the opening; and removing the sacrificial filler material from the opening selective to the dielectric layer, the contact liner, and the contact to form an interconnect trench.
    Type: Application
    Filed: March 27, 2014
    Publication date: October 1, 2015
    Applicant: International Business Machines Corporation
    Inventors: Domingo A. Ferrer, Jim Shih-Chun Liang, Joyeeta Nag, Wei-tsu Tseng, George S. Tulevski