Patents by Inventor William E. Nehrer

William E. Nehrer 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: 7279738
    Abstract: A method for manufacturing a semiconductor device that comprises forming an oxide layer over a substrate. A polysilicon layer is disposed outwardly from the oxide layer, wherein the polysilicon layer forms a floating gate. A PSG layer is disposed outwardly from the polysilicon layer and planarized. The device is pattern etched to form a capacitor channel, wherein the capacitor channel is disposed substantially above the floating gate formed from the polysilicon layer. A dielectric layer is formed in the capacitor channel disposed outwardly from the polysilicon layer. A tungsten plug operable to substantially fill the capacitor channel is formed.
    Type: Grant
    Filed: June 2, 2005
    Date of Patent: October 9, 2007
    Assignee: Texas Instruments Incorporated
    Inventors: Imran M. Khan, Louis N. Hutter, James (Bob) Todd, Jozef C. Mitros, William E. Nehrer
  • Patent number: 6979615
    Abstract: A method for manufacturing a semiconductor device that comprises forming an oxide layer over a substrate. A polysilicon layer is disposed outwardly from the oxide layer, wherein the polysilicon layer forms a floating gate. A PSG layer is disposed outwardly from the polysilicon layer and planarized. The device is pattern etched to form a capacitor channel, wherein the capacitor channel is disposed substantially above the floating gate formed from the polysilicon layer. A dielectric layer is formed in the capacitor channel disposed outwardly from the polysilicon layer. A tungsten plug operable to substantially fill the capacitor channel is formed.
    Type: Grant
    Filed: September 12, 2002
    Date of Patent: December 27, 2005
    Assignee: Texas Instruments Incorporated
    Inventors: Imran M. Khan, Louis N. Hutter, James Todd, Jozef C. Mitros, William E. Nehrer
  • Publication number: 20040053455
    Abstract: A method for manufacturing a semiconductor device that comprises forming an oxide layer over a substrate. A polysilicon layer is disposed outwardly from the oxide layer, wherein the polysilicon layer forms a floating gate. A PSG layer is disposed outwardly from the polysilicon layer and planarized. The device is pattern etched to form a capacitor channel, wherein the capacitor channel is disposed substantially above the floating gate formed from the polysilicon layer. A dielectric layer is formed in the capacitor channel disposed outwardly from the polysilicon layer. A tungsten plug operable to substantially fill the capacitor channel is formed.
    Type: Application
    Filed: September 12, 2002
    Publication date: March 18, 2004
    Applicant: Texas Instruments Incorporated
    Inventors: Imran M. Khan, Louis N. Hutter, James (Bob) Todd, Jozef C. Mitros, William E. Nehrer
  • Patent number: 6706635
    Abstract: The present invention relates to a method for forming an anlog capacitor on a semiconductor substrate. The method comprises forming a field oxide over a portion of the substrate, and forming a polysilicon layer over the field oxide layer, and subsequently forming a silicide over the polysilicon layer. A first interlayer dielectric layer is formed over the substrate, and a capacitor masking pattern is formed. The first interlayer dielectric is etched using the capacitor masking pattern as a mask and the silicide layer as an etch stop, and a thin dielectric is formed over the substrate. A contact masking pattern is formed over the substrate, and a subsequent etch is performed on the thin dielectric and the first interlayer dielectric using the silicide and substrate as an etch stop. A metal layer is deposited over the substrate, and is subsequently planarized, thereby defining an analog capacitor.
    Type: Grant
    Filed: June 5, 2002
    Date of Patent: March 16, 2004
    Assignee: Texas Instruments Incorporated
    Inventors: Imran M. Khan, William E. Nehrer, James Todd, Weidong Tian, Louis N. Hutter
  • Publication number: 20030228764
    Abstract: The present invention relates to a method for forming an analog capacitor on a semiconductor substrate. The method comprises forming a field oxide over a portion of the substrate, and forming a polysilicon layer over the field oxide layer, and subsequently forming a silicide over the polysilicon layer. A first interlayer dielectric layer is formed over the substrate, and a capacitor masking pattern is formed. The first interlayer dielectric is etched using the capacitor masking pattern as a mask and the silicide layer as an etch stop, and a thin dielectric is formed over the substrate. A contact masking pattern is formed over the substrate, and a subsequent etch is performed on the thin dielectric and the first interlayer dielectric using the silicide and substrate as an etch stop. A metal layer is deposited over the substrate, and is subsequently planarized, thereby defining an analog capacitor.
    Type: Application
    Filed: June 5, 2002
    Publication date: December 11, 2003
    Inventors: Imran M. Khan, William E. Nehrer, James Todd, Weidong Tian, Louis N. Hutter