Patents by Inventor Stephen Cea

Stephen Cea 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: 20060084216
    Abstract: Various methods for forming a layer of strained silicon in a channel region of a device and devices constructed according to the disclosed methods. In one embodiment, a strain-inducing layer is formed, a relaxed layer is formed on the strain-inducing layer, a portion of the strain-inducing layer is removed, which allows the strain-inducing layer to relax and strain the relaxed layer.
    Type: Application
    Filed: December 1, 2005
    Publication date: April 20, 2006
    Inventors: Stephen Cea, Ravindra Soman, Ramune Nagisetty, Sunit Tyagi, Sanjay Natarajan
  • Publication number: 20060065849
    Abstract: Flash lamp apparatuses that generate electromagnetic radiation with wavelengths greater than and/or less than a defined range of wavelengths are disclosed.
    Type: Application
    Filed: September 28, 2004
    Publication date: March 30, 2006
    Inventors: Jack Hwang, Stephen Cea, Paul Davids, Karson Knutson
  • Publication number: 20050224800
    Abstract: A method of a bulk tri-gate transistor having stained enhanced mobility and its method of fabrication. The present invention is a nonplanar transistor having a strained enhanced mobility and its method of fabrication. The transistor has a semiconductor body formed on a semiconductor substrate wherein the semiconductor body has a top surface on laterally opposite sidewalls. A semiconductor capping layer is formed on the top surface and on the sidewalls of the semiconductor body. A gate dielectric layer is formed on the semiconductor capping layer on the top surface of a semiconductor body and is formed on the capping layer on the sidewalls of the semiconductor body. A gate electrode having a pair of laterally opposite sidewalls is formed on and around the gate dielectric layer. A pair of source/drain regions are formed in the semiconductor body on opposite sides of the gate electrode.
    Type: Application
    Filed: March 31, 2004
    Publication date: October 13, 2005
    Inventors: Nick Lindert, Stephen Cea
  • Publication number: 20050218438
    Abstract: A method of a bulk tri-gate transistor having stained enhanced mobility and its method of fabrication. The present invention is a nonplanar transistor having a strained enhanced mobility and its method of fabrication. The transistor has a semiconductor body formed on a semiconductor substrate wherein the semiconductor body has a top surface on laterally opposite sidewalls. A semiconductor capping layer is formed on the top surface and on the sidewalls of the semiconductor body. A gate dielectric layer is formed on the semiconductor capping layer on the top surface of a semiconductor body and is formed on the capping layer on the sidewalls of the semiconductor body. A gate electrode having a pair of laterally opposite sidewalls is formed on and around the gate dielectric layer. A pair of source/drain regions are formed in the semiconductor body on opposite sides of the gate electrode.
    Type: Application
    Filed: March 22, 2005
    Publication date: October 6, 2005
    Inventors: Nick Lindert, Stephen Cea
  • Publication number: 20050167652
    Abstract: A method including forming a device on a substrate, the device including a gate electrode on a surface of the substrate; a first junction region and a second junction region in the substrate adjacent the gate electrode; and depositing a straining layer on the gate electrode.
    Type: Application
    Filed: March 1, 2005
    Publication date: August 4, 2005
    Inventors: Thomas Hoffmann, Stephen Cea, Martin Giles
  • Publication number: 20050106792
    Abstract: Various methods for forming a layer of strained silicon in a channel region of a device and devices constructed according to the disclosed methods. In one embodiment, a strain-inducing layer is formed, a relaxed layer is formed on the strain-inducing layer, a portion of the strain-inducing layer is removed, which allows the strain-inducing layer to relax and strain the relaxed layer.
    Type: Application
    Filed: November 14, 2003
    Publication date: May 19, 2005
    Inventors: Stephen Cea, Ravindra Soman, Ramune Nagisetty, Sunit Tyagi, Sanjay Natarajan
  • Publication number: 20040262683
    Abstract: Optimal strain in the channel region of a PMOS transistor is provided by silicon alloy material in the junction regions of the device in a non-planar relationship with the surface of the substrate. The silicon alloy material, the dimensions of the silicon alloy material, as well as the non-planar relationship of the silicon alloy material with the surface of the substrate are selected so that the difference between the lattice spacing of the silicon alloy material and of the substrate causes strains in the silicon alloy material below the substrate surface, as well as above the substrate surface, to affect an optimal silicon alloy induced strain in the substrate channel. In addition, the non-planar relationship may be selected so that any strains caused by different lattice spaced layers formed over the silicon alloy material have a reduced effect on the strain in the channel region.
    Type: Application
    Filed: June 27, 2003
    Publication date: December 30, 2004
    Inventors: Mark T. Bohr, Tahir Ghani, Stephen Cea, Kaizad Mistry, Christopher P. Auth, Mark Armstrong, Keith E. Zawadzki
  • Publication number: 20040235236
    Abstract: An integrated circuit is described that comprises a PMOS transistor and an NMOS transistor that are formed on a semiconductor substrate. A silicate glass layer is formed on only the PMOS transistor or the NMOS transistor; and an etch stop layer is formed on the silicate glass layer. Also described is a method for forming an integrated circuit. That method comprises forming a PMOS transistor structure and an NMOS transistor structure on a semiconductor substrate, forming a silicate glass layer on only the PMOS transistor structure or the NMOS transistor structure, and forming an etch stop layer on the silicate glass layer.
    Type: Application
    Filed: May 21, 2003
    Publication date: November 25, 2004
    Inventors: Thomas Hoffmann, Chris Auth, Mark Armstrong, Stephen Cea
  • Publication number: 20040102013
    Abstract: In accordance with some embodiments, codoping with carbon or fluorine and phosphorous may form NMOS source drain junctions with desirable short channel performance, improved drive current, and desirable polysilicon depletion. Thus, phosphorous doping levels may be increased, improving transistor performance without other significant adverse effects.
    Type: Application
    Filed: November 27, 2002
    Publication date: May 27, 2004
    Inventors: Jack Hwang, Mitchell Taylor, Craig Andyke, Mark Armstrong, Jerry Zietz, Harold Kennel, Stephen Cea, Thomas Hoffman, Seok-Hee Lee