Patents by Inventor THOMAS RITZDORF

THOMAS RITZDORF 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: 20080217167
    Abstract: An apparatus and method for electrochemical processing of microelectronic workpieces in a reaction vessel.
    Type: Application
    Filed: March 29, 2005
    Publication date: September 11, 2008
    Inventors: Kyle Hanson, Thomas Ritzdorf, Gregory Wilson, Paul McHugh
  • Publication number: 20080217165
    Abstract: An apparatus and method for electrochemical processing of microelectronic workpieces in a reaction vessel.
    Type: Application
    Filed: March 29, 2005
    Publication date: September 11, 2008
    Inventors: Kyle Hanson, Thomas Ritzdorf, Gregory Wilson, Paul McHugh
  • Publication number: 20080217166
    Abstract: An apparatus and method for electrochemical processing of microelectronic workpieces in a reaction vessel.
    Type: Application
    Filed: March 29, 2005
    Publication date: September 11, 2008
    Inventors: Kyle Hanson, Thomas Ritzdorf, Gregory Wilson, Paul McHugh
  • Publication number: 20070221502
    Abstract: A facility for selecting and refining electrical parameters for processing a microelectronic workpiece in a processing chamber is described. The facility initially configures the electrical parameters in accordance with either a numerical of the processing chamber or experimental data derived from operating the actual processing chamber. After a workpiece is processed with the initial parameter configuration, the results are measured and a sensitivity matrix based upon the numerical model of the processing chamber is used to select new parameters that correct for any deficiencies measured in the processing of the first workpiece. These parameters are then used in processing a second workpiece, which may be similarly measured, and the results used to further refine the parameters.
    Type: Application
    Filed: April 24, 2007
    Publication date: September 27, 2007
    Applicant: Semitool, Inc.
    Inventors: Gregory Wilson, Paul McHugh, Robert Weaver, Thomas Ritzdorf
  • Publication number: 20070215481
    Abstract: Methods and apparatuses for in-situ cleaning of semiconductor electroplating electrodes to remove plating metal without requiring the manual removal of the electrodes from the semiconductor plating equipment. The electrode is placed into the plating liquid and an electrical current having reverse polarity is passed between the electrode and plating liquid. Plating deposits which have accumulated on the electrode are electrochemically dissolved and removed from the electrode.
    Type: Application
    Filed: March 30, 2007
    Publication date: September 20, 2007
    Inventors: Lyndon Graham, Thomas Ritzdorf, Jeffrey Turner
  • Publication number: 20070114133
    Abstract: A method for filling recessed micro-structures at a surface of a semiconductor wafer with metallization is set forth. In accordance with the method, a metal layer is deposited into the micro-structures with a process, such as an electroplating process, that generates metal grains that are sufficiently small so as to substantially fill the recessed micro-structures. The deposited metal is subsequently subjected to an annealing process at a temperature below about 100 degrees Celsius, and may even take place at ambient room temperature to allow grain growth which provides optimal electrical properties.
    Type: Application
    Filed: November 6, 2006
    Publication date: May 24, 2007
    Applicant: Semitool, Inc.
    Inventors: Thomas Ritzdorf, Lyndon Graham
  • Publication number: 20070089991
    Abstract: A facility for selecting and refining electrical parameters for processing a microelectronic workpiece in a processing chamber is described. The facility initially configures the electrical parameters in accordance with either a mathematical model of the processing chamber or experimental data derived from operating the actual processing chamber. After a workpiece is processed with the initial parameter configuration, the results are measured and a sensitivity matrix based upon the mathematical model of the processing chamber is used to select new parameters that correct for any deficiencies measured in the processing of the first workpiece. These parameters are then used in processing a second workpiece, which may be similarly measured, and the results used to further refine the parameters.
    Type: Application
    Filed: December 14, 2006
    Publication date: April 26, 2007
    Applicant: Semitool, Inc.
    Inventors: Gregory Wilson, Paul McHugh, Robert Weaver, Thomas Ritzdorf
  • Publication number: 20070034516
    Abstract: A facility for selecting and refining electrical parameters for processing a microelectronic workpiece in a processing chamber is described. The facility initially configures the electrical parameters in accordance with either a numerical of the processing chamber or experimental data derived from operating the actual processing chamber. After a workpiece is processed with the initial parameter configuration, the results are measured and a sensitivity matrix based upon the numerical model of the processing chamber is used to select new parameters that correct for any deficiencies measured in the processing of the first workpiece. These parameters are then used in processing a second workpiece, which may be similarly measured, and the results used to further refine the parameters.
    Type: Application
    Filed: March 28, 2006
    Publication date: February 15, 2007
    Inventors: Gregory Wilson, Paul McHugh, Robert Weaver, Thomas Ritzdorf
  • Publication number: 20060208272
    Abstract: A method for filling recessed micro-structures at a surface of a semiconductor wafer with metallization is set forth. In accordance with the method, a metal layer is deposited into the micro-structures with a process, such as an electroplating process, that generates metal grains that are sufficiently small so as to substantially fill the recessed micro-structures. The deposited metal is subsequently subjected to an annealing process at a temperature below about 100 degrees Celsius, and may even take place at ambient room temperature to allow grain growth which provides optimal electrical properties.
    Type: Application
    Filed: May 23, 2006
    Publication date: September 21, 2006
    Inventors: Thomas Ritzdorf, Lyndon Graham
  • Publication number: 20060037855
    Abstract: Processing tools, components of tools, and methods of making and using such devices for electrochemical processing of microelectronic workpieces. One aspect of the invention is directed toward reaction vessels for electrochemical processing of microelectronic workpieces, processing stations including such reaction vessels, and methods for using these devices. For example, one embodiment of a reaction vessel includes an outer container having an outer wall, a first outlet configured to introduce a primary fluid flow into the outer container, and at least one second outlet configured to introduce a secondary fluid flow into the outer container separate from the primary fluid flow. The reaction vessel can also include at least one electrode, and it can also have a field shaping unit.
    Type: Application
    Filed: April 20, 2005
    Publication date: February 23, 2006
    Inventors: Kyle Hanson, Steve Eudy, Thomas Ritzdorf, Gregory Wilson, Daniel Woodruff, Randy Harris, Curtis Weber, Tim McGlenn, Timothy Anderson, Daniel Bexten
  • Publication number: 20060000716
    Abstract: A facility for selecting and refining electrical parameters for processing a microelectronic workpiece in a processing chamber is described. The facility initially configures the electrical parameters in accordance with either a mathematical model of the processing chamber or experimental data derived from operating the actual processing chamber. After a workpiece is processed with the initial parameter configuration, the results are measured and a sensitivity matrix based upon the mathematical model of the processing chamber is used to select new parameters that correct for any deficiencies measured in the processing of the first workpiece. These parameters are then used in processing a second workpiece, which may be similarly measured, and the results used to further refine the parameters.
    Type: Application
    Filed: January 18, 2005
    Publication date: January 5, 2006
    Inventors: Gregory Wilson, Paul McHugh, Robert Weaver, Thomas Ritzdorf
  • Publication number: 20050245083
    Abstract: A process for metallization of a workpiece, such as a semiconductor workpiece. In an embodiment, an alkaline electrolytic copper bath is used to electroplate copper onto a seed layer, electroplate copper directly onto a barrier layer material, or enhance an ultra-thin copper seed layer which has been deposited on the barrier layer using a deposition process such as PVD. The resulting copper layer provides an excellent conformal copper coating that fills trenches, vias, and other microstructures in the workpiece. When used for seed layer enhancement, the resulting copper seed layer provide an excellent conformal copper coating that allows the microstructures to be filled with a copper layer having good uniformity using electrochemical deposition techniques. Further, copper layers that are electroplated in the disclosed manner exhibit low sheet resistance and are readily annealed at low temperatures.
    Type: Application
    Filed: February 7, 2005
    Publication date: November 3, 2005
    Inventors: Linlin Chen, Gregory Wilson, Paul McHugh, Robert Weaver, Thomas Ritzdorf
  • Publication number: 20050211551
    Abstract: An apparatus and method for electrochemical processing of microelectronic workpieces in a reaction vessel.
    Type: Application
    Filed: March 29, 2005
    Publication date: September 29, 2005
    Inventors: Kyle Hanson, Thomas Ritzdorf, Gregory Wilson, Paul McHugh
  • Publication number: 20050205409
    Abstract: An apparatus and method for electrochemical processing of microelectronic workpieces in a reaction vessel.
    Type: Application
    Filed: March 29, 2005
    Publication date: September 22, 2005
    Inventors: Kyle Hanson, Thomas Ritzdorf, Gregory Wilson, Paul McHugh
  • Publication number: 20050205419
    Abstract: An apparatus and method for electrochemical processing of microelectronic workpieces in a reaction vessel.
    Type: Application
    Filed: March 29, 2005
    Publication date: September 22, 2005
    Inventors: Kyle Hanson, Thomas Ritzdorf, Gregory Wilson, Paul McHugh
  • Publication number: 20050205111
    Abstract: Methods and apparatuses for processing microfeature workpieces are disclosed herein. In one embodiment, a workpiece support carries a workpiece in a processing volume of a processing chamber. A first fluid delivery device directs an unsupported stream of a first fluid into the processing volume. A second fluid delivery device directs an unsupported stream of a second fluid into the processing volume. A first fluid collector receives at least a portion of the first fluid, and a second fluid collector receives at least a portion of the second fluid. Accordingly, embodiments of the apparatus support the use of multiple fluids in a single processing volume to control, restrict, and/or eliminate mixing between the two fluids while reducing and/or eliminating the need for purging and/or rinsing portions of the apparatus. The rotation rate and/or position of the workpiece can also be controlled to control the manner in which the fluids are collected.
    Type: Application
    Filed: December 20, 2004
    Publication date: September 22, 2005
    Inventors: Thomas Ritzdorf, Dakin Fulton, Robert Batz, Kevin Witt, Kyle Hanson
  • Publication number: 20050194248
    Abstract: An apparatus and method for electrochemical processing of microelectronic workpieces in a reaction vessel.
    Type: Application
    Filed: March 29, 2005
    Publication date: September 8, 2005
    Inventors: Kyle Hanson, Thomas Ritzdorf, Gregory Wilson, Paul McHugh
  • Publication number: 20050189215
    Abstract: An apparatus and method for electrochemical processing of microelectronic workpieces in a reaction vessel.
    Type: Application
    Filed: March 29, 2005
    Publication date: September 1, 2005
    Inventors: Kyle Hanson, Thomas Ritzdorf, Gregory Wilson, Paul McHugh
  • Publication number: 20050189227
    Abstract: A facility for selecting and refining electrical parameters for processing a microelectronic workpiece in a processing chamber is described. The facility initially configures the electrical parameters in accordance with either a mathematical model of the processing chamber or experimental data derived from operating the actual processing chamber. After a workpiece is processed with the initial parameter configuration, the results are measured and a sensitivity matrix based upon the mathematical model of the processing chamber is used to select new parameters that correct for any deficiencies measured in the processing of the first workpiece. These parameters are then used in processing a second workpiece, which may be similarly measured, and the results used to further refine the parameters.
    Type: Application
    Filed: March 31, 2005
    Publication date: September 1, 2005
    Inventors: Gregory Wilson, Paul McHugh, Robert Weaver, Thomas Ritzdorf
  • Publication number: 20050189214
    Abstract: An apparatus and method for electrochemical processing of microelectronic workpieces in a reaction vessel.
    Type: Application
    Filed: March 29, 2005
    Publication date: September 1, 2005
    Inventors: Kyle Hanson, Thomas Ritzdorf, Gregory Wilson, Paul McHugh