Patents by Inventor Patrick Qiang Lo

Patrick Qiang Lo 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: 20080064153
    Abstract: A method is described to form a MOSFET with a fully silicided gate electrode and fully silicided, raised S/D elements that are nearly coplanar to allow a wider process margin when forming contacts to silicided regions. An insulator block layer is formed over STI regions and a conformal silicidation stop layer such as Ti/TiN is disposed on the insulator block layer and active region. A polysilicon layer is deposited on the silicidation stop layer and is planarized by a CMP process to form raised S/D elements. An oxide hardmask on the gate electrode is removed to produce a slight recess between the spacers. A silicidation process yields a gate electrode and raised S/D elements comprised of NiSi. Optionally, a recess is formed in the substrate between an insulator block mask and spacer and a Schottky barrier is used instead of a silicidation stop layer to form a Schottky Barrier MOSFET.
    Type: Application
    Filed: October 30, 2007
    Publication date: March 13, 2008
    Inventors: Patrick Qiang Lo, Wei Loh, Ranganathan Nagarajan, Narayanan Balasubramanian