Patents by Inventor Veer Dhandapani

Veer Dhandapani 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: 7378306
    Abstract: A semiconductor process and apparatus provide a planarized hybrid substrate (225) having a more uniform polish surface (300) by thickening an SOI semiconductor layer (210) in relation to a previously or subsequently formed epitaxial silicon layer (220) with a selective silicon deposition process that covers the SOI semiconductor layer (210) with a crystalline semiconductor layer (216). By forming first gate electrodes (151) over a first SOI substrate (90) using deposited (100) silicon and forming second gate electrodes (161) over an epitaxially grown (110) silicon substrate (70), a high performance CMOS device is obtained which includes high-k metal PMOS gate electrodes (161) having improved hole mobility.
    Type: Grant
    Filed: March 14, 2006
    Date of Patent: May 27, 2008
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Gregory S. Spencer, Peter J. Beckage, Mariam G. Sadaka, Veer Dhandapani
  • Patent number: 7282415
    Abstract: A semiconductor device with strain enhancement is formed by providing a semiconductor substrate and an overlying control electrode having a sidewall. An insulating layer is formed adjacent the sidewall of the control electrode. The semiconductor substrate and the control electrode are implanted to form first and second doped current electrode regions, a portion of each of the first and second doped current electrode regions being driven to underlie both the insulating layer and the control electrode in a channel region of the semiconductor device. The first and second doped current electrode regions are removed from the semiconductor substrate except for underneath the control electrode and the insulating layer to respectively form first and second trenches. An insitu doped material containing a different lattice constant relative to the semiconductor substrate is formed within the first and second trenches to function as first and second current electrodes of the semiconductor device.
    Type: Grant
    Filed: March 29, 2005
    Date of Patent: October 16, 2007
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Da Zhang, Bich-Yen Nguyen, Voon-Yew Thean, Yasuhito Shiho, Veer Dhandapani
  • Publication number: 20070218659
    Abstract: A semiconductor process and apparatus provide a planarized hybrid substrate (225) having a more uniform polish surface (300) by thickening an SOI semiconductor layer (210) in relation to a previously or subsequently formed epitaxial silicon layer (220) with a selective silicon deposition process that covers the SOI semiconductor layer (210) with a crystalline semiconductor layer (216). By forming first gate electrodes (151) over a first SOI substrate (90) using deposited (100) silicon and forming second gate electrodes (161) over an epitaxially grown (110) silicon substrate (70), a high performance CMOS device is obtained which includes high-k metal PMOS gate electrodes (161) having improved hole mobility.
    Type: Application
    Filed: March 14, 2006
    Publication date: September 20, 2007
    Inventors: Gregory Spencer, Peter Beckage, Mariam Sadaka, Veer Dhandapani
  • Patent number: 7238561
    Abstract: A method for making a semiconductor device is provided herein. In accordance with the method, a semiconductor structure is provided which comprises a substrate (201) with a gate structure (209) disposed thereon, wherein the gate structure comprises a gate electrode (227) and at least one spacer structure (215, 217), and wherein the substrate comprises a first semiconductor material. A first trench (231) is created in the substrate adjacent to the gate structure through the use of a first etch. The gate electrode is then etched with a second etch. Preferably, the minimum cumulative reduction in thickness of the gate electrode from the first and second etches is dg, the maximum depth of the first and second trenches after the first and second etches is dt, and dg?dt.
    Type: Grant
    Filed: August 2, 2005
    Date of Patent: July 3, 2007
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Da Zhang, Veer Dhandapani, Brian Goolsby, Bich-Yen Nguyen
  • Publication number: 20070032003
    Abstract: A method for making a semiconductor device is provided herein. In accordance with the method, a semiconductor structure is provided which comprises a substrate (201) with a gate structure (209) disposed thereon, wherein the gate structure comprises a gate electrode (227) and at least one spacer structure (215, 217), and wherein the substrate comprises a first semiconductor material. A first trench (231) is created in the substrate adjacent to the gate structure through the use of a first etch. The gate electrode is then etched with a second etch. Preferably, the minimum cumulative reduction in thickness of the gate electrode from the first and second etches is dg, the maximum depth of the first and second trenches after the first and second etches is dt, and dg?dt.
    Type: Application
    Filed: August 2, 2005
    Publication date: February 8, 2007
    Inventors: Da Zhang, Veer Dhandapani, Brian Goolsby, Bich-Yen Nguyen
  • Publication number: 20060228863
    Abstract: A semiconductor device with strain enhancement is formed by providing a semiconductor substrate and an overlying control electrode having a sidewall. An insulating layer is formed adjacent the sidewall of the control electrode. The semiconductor substrate and the control electrode are implanted to form first and second doped current electrode regions, a portion of each of the first and second doped current electrode regions being driven to underlie both the insulating layer and the control electrode in a channel region of the semiconductor device. The first and second doped current electrode regions are removed from the semiconductor substrate except for underneath the control electrode and the insulating layer to respectively form first and second trenches. An insitu doped material containing a different lattice constant relative to the semiconductor substrate is formed within the first and second trenches to function as first and second current electrodes of the semiconductor device.
    Type: Application
    Filed: March 29, 2005
    Publication date: October 12, 2006
    Inventors: Da Zhang, Bich-Yen Nguyen, Voon-Yew Thean, Yasuhito Shiho, Veer Dhandapani