Patents by Inventor Thomas H. Ivers

Thomas H. Ivers 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: 7480990
    Abstract: Methods for forming conductor contacts provide for etching through a capping layer located upon a conductor contact region within a substrate. A first pair of methods provide for etching through at least a lower thickness of the capping layer with other than a reactive ion etch to provide an exposed conductor contact region. A partially overlapping second pair of methods provides for converting at least an upper thickness of the capping layer to a converted material layer that is removed incident to providing an exposed conductor contact region. As adjunct to any of the methods, a liner layer is formed and located upon the exposed conductor contact region in absence of an undesirable reactive environment.
    Type: Grant
    Filed: January 6, 2006
    Date of Patent: January 27, 2009
    Assignee: International Business Machines Corporation
    Inventors: John A. Fitzsimmons, William J. Cote, Nancy A. Greco, Thomas H. Ivers, Steven Moskowitz
  • Patent number: 7034400
    Abstract: A metallization insulating structure, having a substrate; a substantially fluorine free insulating layer formed on the substrate, having a height, hi; a fluorine containing insulating layer formed on the substantially fluorine free insulating layer, having a height hf.
    Type: Grant
    Filed: September 10, 2003
    Date of Patent: April 25, 2006
    Assignee: International Business Machines Corporation
    Inventors: Edward P. Barth, Glenn A. Biery, Jeffrey P. Gambino, Thomas H. Ivers, Hyun K. Lee, Ernest N. Levine, Ann McDonald, Anthony K. Stamper
  • Patent number: 6939797
    Abstract: An advanced back-end-of-line (BEOL) metallization structure is disclosed. The structure includes a diffusion barrier or cap layer having a low dielectric constant (low-k), where the cap layer is formed of silicon nitride by a plasma-enhanced chemical vapor deposition (PE CVD) process. The metallization structure also includes an inter-layer dielectric (ILD) formed of a carbon-containing dielectric material having a dielectric constant of less than about 4, and a continuous hardmask layer overlying the ILD which is preferably formed of silicon nitride or silicon carbide. A method for forming the BEOL metallization structure is also disclosed. The method includes a pre-clean or pre-activation step to improve the adhesion of the cap layer to the underlying copper conductors. The pre-clean or pre-activation step comprises exposing the copper surface to a reducing plasma including hydrogen, ammonia, nitrogen and/or noble gases.
    Type: Grant
    Filed: November 12, 2003
    Date of Patent: September 6, 2005
    Assignee: International Business Machines Corporation
    Inventors: Edward Barth, John A. Fitzsimmons, Stephen M. Gates, Thomas H. Ivers, Sarah L. Lane, Jia Lee, Ann McDonald, Vincent McGahay, Darryl D. Restaino
  • Patent number: 6821890
    Abstract: Poorly adherent layers such as silicon nitride and silicon dioxide exhibit improved adhesion to copper member by providing an intervening germanium-containing layer. The germanium-containing layer is copper germanide, germanium oxide, germanium nitride or combinations thereof. The germanium-containing layer enhances the adhesion such that the poorly adherent layer is less susceptible to delamination from the copper member.
    Type: Grant
    Filed: May 7, 2001
    Date of Patent: November 23, 2004
    Assignee: International Business Machines Corporation
    Inventors: Vincent J. McGahay, Thomas H. Ivers, Joyce C. Liu, Henry A. Nye, III
  • Publication number: 20040173908
    Abstract: An advanced back-end-of-line (BEOL) metallization structure is disclosed. The structure includes a diffusion barrier or cap layer having a low dielectric constant (low-k), where the cap layer is formed of silicon nitride by a plasma-enhanced chemical vapor deposition (PE CVD) process. The metallization structure also includes an inter-layer dielectric (ILD) formed of a carbon-containing dielectric material having a dielectric constant of less than about 4, and a continuous hardmask layer overlying the ILD which is preferably formed of silicon nitride or silicon carbide. A method for forming the BEOL metallization structure is also disclosed. The method includes a pre-clean or pre-activation step to improve the adhesion of the cap layer to the underlying copper conductors. The pre-clean or pre-activation step comprises exposing the copper surface to a reducing plasma including hydrogen, ammonia, nitrogen and/or noble gases.
    Type: Application
    Filed: November 12, 2003
    Publication date: September 9, 2004
    Inventors: Edward Barth, John A. Fitzsimmons, Stephen M. Gates, Thomas H. Ivers, Sarah L. Lane, Jia Lee, Ann McDonald, Vincent McGahay, Darryl D. Restaino
  • Patent number: 6737747
    Abstract: An advanced back-end-of-line (BEOL) metallization structure is disclosed. The structure includes a diffusion barrier or cap layer having a low dielectric constant (low-k), where the cap layer is formed of silicon nitride by a plasma-enhanced chemical vapor deposition (PE CVD) process. The metallization structure also includes an inter-layer dielectric (ILD) formed of a carbon-containing dielectric material having a dielectric constant of less than about 4, and a continuous hardmask layer overlying the ILD which is preferably formed of silicon nitride or silicon carbide. A method for forming the BEOL metallization structure is also disclosed. The method includes a pre-clean or pre-activation step to improve the adhesion of the cap layer to the underlying copper conductors. The pre-clean or pre-activation step comprises exposing the copper surface to a reducing plasma including hydrogen, ammonia, nitrogen and/or noble gases.
    Type: Grant
    Filed: January 15, 2002
    Date of Patent: May 18, 2004
    Assignee: International Business Machines Corporation
    Inventors: Edward Barth, John A. Fitzsimmons, Stephen M. Gates, Thomas H. Ivers, Sarah L. Lane, Jia Lee, Ann McDonald, Vincent McGahay, Darryl D. Restaino
  • Publication number: 20040061235
    Abstract: A metallization insulating structure, having
    Type: Application
    Filed: September 10, 2003
    Publication date: April 1, 2004
    Inventors: Edward P. Barth, Glenn A. Biery, Jeffrey P. Gambino, Thomas H. Ivers, Hyun K. Lee, Ernest N. Levine, Ann McDonald, Anthony K. Stamper
  • Patent number: 6626188
    Abstract: The present invention relates generally to the field of semiconductor device manufacturing, and more specifically to a method for cleaning and preconditioning a dome in a chemical vapor deposition system. During cleaning, the direction of flow of cooling water through an induction coil in the dome is reversed. During preconditioning, the direction of cooling water flow is preferably reversed again, such that it is the same direction as during deposition. The preconditioning portion of the method comprises introducing a hydrogen gas into the CVD chamber, and then introducing a mixture of hydrogen gas and nitrogen gas into the chamber.
    Type: Grant
    Filed: June 28, 2001
    Date of Patent: September 30, 2003
    Assignee: International Business Machines Corporation
    Inventors: John A. Fitzsimmons, Thomas H. Ivers, Pavel Smetana
  • Publication number: 20030132510
    Abstract: An advanced back-end-of-line (BEOL) metallization structure is disclosed. The structure includes a diffusion barrier or cap layer having a low dielectric constant (low-k), where the cap layer is formed of silicon nitride by a plasma-enhanced chemical vapor deposition (PE CVD) process. The metallization structure also includes an inter-layer dielectric (ILD) formed of a carbon-containing dielectric material having a dielectric constant of less than about 4, and a continuous hardmask layer overlying the ILD which is preferably formed of silicon nitride or silicon carbide. A method for forming the BEOL metallization structure is also disclosed. The method includes a pre-clean or pre-activation step to improve the adhesion of the cap layer to the underlying copper conductors. The pre-clean or pre-activation step comprises exposing the copper surface to a reducing plasma including hydrogen, ammonia, nitrogen and/or noble gases.
    Type: Application
    Filed: January 15, 2002
    Publication date: July 17, 2003
    Applicant: International Business Machines Corporation
    Inventors: Edward Barth, John A. Fitzsimmons, Stephen M. Gates, Thomas H. Ivers, Sarah L. Lane, Jia Lee, Ann McDonald, Vincent McGahay, Darryl D. Restaino
  • Publication number: 20030000545
    Abstract: The present invention relates generally to the field of semiconductor device manufacturing, and more specifically to a method for cleaning and preconditioning a dome in a chemical vapor deposition system. During cleaning, the direction of flow of cooling water through an induction coil in the dome is reversed. During preconditioning, the direction of cooling water flow is preferably reversed again, such that it is the same direction as during deposition. The preconditioning portion of the method comprises introducing a hydrogen gas into the CVD chamber, and then introducing a mixture of hydrogen gas and nitrogen gas into the chamber.
    Type: Application
    Filed: June 28, 2001
    Publication date: January 2, 2003
    Applicant: International Business Machines Corporation
    Inventors: John A. Fitzsimmons, Thomas H. Ivers, Pavel Smetana
  • Publication number: 20020076917
    Abstract: A metallization insulating structure, having
    Type: Application
    Filed: December 20, 1999
    Publication date: June 20, 2002
    Inventors: EDWARD P BARTH, GLENN A BIERY, JEFFREY P GAMBINO, THOMAS H IVERS, HYUN K LEE, ERNEST N LEVINE, ANN MCDONALD, ANTHONY K STAMPER
  • Publication number: 20010023987
    Abstract: Poorly adherent layers such as silicon nitride and silicon dioxide exhibit improved adhesion to copper member by providing an intervening germanium-containing layer. The germanium-containing layer is copper germanide, germanium oxide, germanium nitride or combinations thereof. The germanium-containing layer enhances the adhesion such that the poorly adherent layer is less susceptible to delamination from the copper member.
    Type: Application
    Filed: May 7, 2001
    Publication date: September 27, 2001
    Inventors: Vincent J. Mcgahay, Thomas H. Ivers, Joyce Liu, Henry A. Nye
  • Patent number: 6271595
    Abstract: Poorly adherent layers such as silicon nitride and silicon dioxide exhibit improved adhesion to copper member by providing an intervening germanium-containing layer. The germanium-containing layer is copper germanide, germanium oxide, germanium bitride or combinations thereof. The germanium-containing layer enhances the adhesion such that the poorly adherent layer is less susceptible to delamination from the copper member.
    Type: Grant
    Filed: January 14, 1999
    Date of Patent: August 7, 2001
    Assignee: International Business Machines Corporation
    Inventors: Vincent J. McGahay, Thomas H. Ivers, Joyce C. Liu, Henry A. Nye, III
  • Patent number: 6252295
    Abstract: The adhesion of a silicon carbide containing film to a surface is enhanced by employing a transition film of silicon nitride, silicon dioxide and/or silicon oxynitride.
    Type: Grant
    Filed: June 19, 2000
    Date of Patent: June 26, 2001
    Assignee: International Business Machines Corporation
    Inventors: Donna R. Cote, Daniel C. Edelstein, John A. Fitzsimmons, Thomas H. Ivers, Paul C. Jamison, Ernest Levine