Patents by Inventor Neil J. Bassom

Neil J. Bassom 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: 8937003
    Abstract: A technique for ion implanting a target is disclosed. In accordance with one exemplary embodiment, the technique may be realized as a method for ion implanting a target, the method comprising: providing a predetermined amount of processing gas in an arc chamber of an ion source, the processing gas containing implant species and implant species carrier, where the implant species carrier may be one of O and H; providing a predetermined amount of dilutant into the arc chamber, wherein the dilutant may comprise a noble species containing material; and ionizing the processing gas and the dilutant.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: January 20, 2015
    Assignee: Varian Semiconductor Equipment Associates, Inc.
    Inventors: Alexander S. Perel, Craig R. Chaney, Wayne D. LeBlanc, Robert Lindberg, Antonella Cucchetti, Neil J. Bassom, David Sporleder, James Young
  • Publication number: 20140352617
    Abstract: A system for extending the life of insulating components disposed within a housing, such as an ion implanter, is disclosed. The system includes one or more insulating components, disposed in the housing, which are coated with a diamond like carbon (DLC) coating. The insulating components may be bushings or any insulating component used to electrically isolate two components having different voltage potentials, such as electrodes. This DLC coating retards the deposition of metals, such as those contained in the ion source, on the insulating components. This reduces the likelihood or electrical arcing or other phenomenon that affect the useful life of these insulating component.
    Type: Application
    Filed: June 3, 2013
    Publication date: December 4, 2014
    Inventors: Craig R. Chaney, Neil J. Bassom
  • Publication number: 20140320012
    Abstract: A self-cleaning radio frequency (RF) plasma source for a semiconductor manufacturing process is described. Various examples provide an RF plasma source comprising an RF antenna and a rotatable dielectric sleeve disposed around the RF antenna. The dielectric is positioned between a process chamber and cleaning chamber such that portions of the surface of the dielectric may be exposed to either the process chamber or the cleaning chamber. As material is deposited on the outer surface of the dielectric in the process chamber, the dielectric sleeve is rotated so that the portion containing the buildup is exposed to the cleaning chamber. A sputtering process in the cleaning chamber removes the buildup from the surface of the sleeve. The dielectric sleeve is then rotated so that it exposed to the process chamber. Other embodiments are disclosed and claimed.
    Type: Application
    Filed: August 5, 2013
    Publication date: October 30, 2014
    Applicant: Varian Semiconductor Equipment Associates, Inc.
    Inventor: Neil J. Bassom
  • Publication number: 20140099782
    Abstract: A method and apparatus are disclosed for controlling a semiconductor process temperature. In one embodiment a thermal control device includes a heat source and a housing comprising a vapor chamber coupled to the heat source. The vapor chamber includes an evaporator section and a condenser section. The evaporator section has a first wall associated with the heat source, the first wall having a wick for drawing a working fluid from a lower portion of the vapor chamber to the evaporator section. The condenser section coupled to a cooling element. The vapor chamber is configured to transfer heat from the heat source to the cooling element via continuous evaporation of the working fluid at the evaporator section and condensation of the working fluid at the condenser section. Other embodiments are disclosed and claimed.
    Type: Application
    Filed: October 4, 2012
    Publication date: April 10, 2014
    Applicant: VARIAN SEMICONDUCTOR EQUIPMENT ASSOCIATES, INC.
    Inventor: Neil J. Bassom
  • Publication number: 20140041684
    Abstract: A system and method of improving the performance and extending the lifetime of an ion source is disclosed. The ion source includes an ion source chamber, a suppression electrode and a ground electrode. In the processing mode, the ion source chamber may be biased to a first positive voltage, while the suppression electrode is biased to a negative voltage to attract positive ions from within the chamber through an aperture and toward the workpiece. In the cleaning mode, the ion source chamber may be grounded, while the suppression electrode is biased using a power supply having a high current capability. The voltage applied to the suppression electrode creates a plasma between the suppression electrode and the ion source chamber, and between the suppression electrode and the ground electrode.
    Type: Application
    Filed: July 31, 2013
    Publication date: February 13, 2014
    Inventors: Peter F. Kurunczi, Neil J. Bassom, Wilhelm J. Platow
  • Publication number: 20130341761
    Abstract: A novel method and system for extending ion source life and improving ion source performance during carbon implantation are provided. Particularly, the carbon ion implant process involves utilizing a dopant gas mixture comprising carbon monoxide and one or more fluorine-containing gas with carbon. At least one fluorine containing gases with carbon is contained in the mixture at about 3-12 volume percent (vol %) based on the volume of the dopant gas mixture. Fluoride ions, radicals or combinations thereof are released from the ionized dopant gas mixture and reacts with deposits derived substantially from carbon along at least one of the surfaces of the repeller electrodes, extraction electrodes and the chamber to reduce the overall amount of deposits. In this manner, a single dopant gas mixture is capable of providing carbon ions and removing and eliminating a wide range of problematic deposits typically encountered during carbon implantation.
    Type: Application
    Filed: June 20, 2012
    Publication date: December 26, 2013
    Inventors: Ashwini K. SINHA, Lloyd A. BROWN, Serge CAMPEAU, Neil J. BASSOM, David SPORLEDER
  • Publication number: 20130313971
    Abstract: In one embodiment, a method for generating an ion beam having gallium ions includes providing at least a portion of a gallium compound target in a plasma chamber, the gallium compound target comprising gallium and at least one additional element. The method also includes initiating a plasma in the plasma chamber using at least one gaseous species and providing a source of gaseous etchant species to react with the gallium compound target to form a volatile gallium species.
    Type: Application
    Filed: May 22, 2012
    Publication date: November 28, 2013
    Applicant: VARIAN SEMICONDUCTOR EQUIPMENT ASSOCIATES, INC.
    Inventors: Costel Biloiu, Craig R. Chaney, Neil J. Bassom, Benjamin Colombeau, Dennis P. Rodier
  • Publication number: 20130313443
    Abstract: An ion source includes an ion chamber housing defining an ion source chamber, the ion chamber housing having a side with a plurality of apertures. The ion source also includes an antechamber housing defining an antechamber. The antechamber housing shares the side with the plurality of apertures with the ion chamber housing. The antechamber housing has an opening to receive a gas from a gas source. The antechamber is configured to transform the gas into an altered state having excited neutrals that is provided through the plurality of apertures into the ion source chamber.
    Type: Application
    Filed: July 31, 2013
    Publication date: November 28, 2013
    Applicant: VARIAN SEMICONDUCTOR EQUIPMENT ASSOCIATES, INC.
    Inventors: Bon-Woong Koo, Victor Benveniste, Christopher A. Rowland, Craig R. Chaney, Frank Sinclair, Neil J. Bassom
  • Patent number: 8501624
    Abstract: An ion source that utilizes exited and/or atomic gas injection is disclosed. In an ion beam application, the source gas can be used directly, as it is traditionally supplied. Alternatively or additionally, the source gas can be altered by passing it through a remote plasma source prior to being introduced to the ion source chamber. This can be used to create excited neutrals, heavy ions, metastable molecules or multiply charged ions. In another embodiment, multiple gasses are used, where one or more of the gasses are passed through a remote plasma generator. In certain embodiments, the gasses are combined in a single plasma generator before being supplied to the ion source chamber. In plasma immersion applications, plasma is injected into the process chamber through one or more additional gas injection locations. These injection locations allow the influx of additional plasma, produced by remote plasma sources external to the process chamber.
    Type: Grant
    Filed: December 4, 2008
    Date of Patent: August 6, 2013
    Assignee: Varian Semiconductor Equipment Associates, Inc.
    Inventors: Bon-Woong Koo, Victor Benveniste, Christopher A. Rowland, Craig R. Chaney, Frank Sinclair, Neil J. Bassom
  • Patent number: 8455839
    Abstract: An ion source includes an arc chamber housing defining an arc chamber having an extraction aperture, and a wiper. The wiper is positioned within the arc chamber in a parked position and configured to be driven from the parked position to operational positions to clean the extraction aperture. A cleaning sub-assembly for an ion source includes a wiper configured to be positioned within an arc chamber of the ion source when in a parked position and driven from the parked position to operational positions to clean an extraction aperture of the ion source.
    Type: Grant
    Filed: March 10, 2010
    Date of Patent: June 4, 2013
    Assignee: Varian Semiconductor Equipment Associates, Inc.
    Inventors: Craig R. Chaney, Alexander S. Perel, Neil J. Bassom, Leo V. Klos
  • Publication number: 20130072008
    Abstract: A technique for ion implanting a target is disclosed. In accordance with one exemplary embodiment, the technique may be realized as a method for ion implanting a target, the method comprising: providing a predetermined amount of processing gas in an arc chamber of an ion source, the processing gas containing implant species and implant species carrier, where the implant species carrier may be one of O and H; providing a predetermined amount of dilutant into the arc chamber, wherein the dilutant may comprise a noble species containing material; and ionizing the processing gas and the dilutant.
    Type: Application
    Filed: September 13, 2012
    Publication date: March 21, 2013
    Inventors: Alexander S. Perel, Craig R. Chaney, Wayne D. LeBlanc, Robert Lindberg, Antonella Cucchetti, Neil J. Bassom, David Sporleder, James Young
  • Patent number: 8330127
    Abstract: Liner elements to protect the ion source housing and also increase the power efficiency of the ion source are disclosed. Two liner elements, preferably constructed from tungsten, are inserted into the ion source chamber, one placed against each of the two sidewalls. These inserts are electrically biased so as to induce an electrical field that is perpendicular to the applied magnetic field. Such an arrangement has been unexpectedly found to increase the life of not only the ion chamber housing, but also the indirectly heated cathode (IHC) and the repeller. In addition, the use of these biased liner elements also improved the power efficiency of the ion source; allowing more ions to be generated at a given power level, or an equal number of ions to be generated at a lower power level.
    Type: Grant
    Filed: March 31, 2008
    Date of Patent: December 11, 2012
    Assignee: Varian Semiconductor Equipment Associates, Inc.
    Inventors: Russell J. Low, Jay T. Scheuer, Alexander S. Perel, Craig R. Chaney, Neil J. Bassom
  • Patent number: 8163641
    Abstract: A charge transfer mechanism is used to locally deposit or remove material for a small structure. A local electrochemical cell is created without having to immerse the entire work piece in a bath. The charge transfer mechanism can be used together with a charged particle beam or laser system to modify small structures, such as integrated circuits or micro-electromechanical system. The charge transfer process can be performed in air or, in some embodiments, in a vacuum chamber.
    Type: Grant
    Filed: January 28, 2010
    Date of Patent: April 24, 2012
    Assignee: FEI Company
    Inventors: George Y. Gu, Neil J. Bassom, Thomas J. Gannon, Kun Liu
  • Patent number: 8049192
    Abstract: An ion beam blocking array configured to provide a mechanical means for adjusting the beam current profile of an ion ribbon beam by blocking the beam current at one or more locations across the ribbon beam. The ion beam blocking array includes a drive motor, an axle connected to the drive motor and a plurality of profile wheels disposed along the axle where each of the profile wheels is configured to rotate when the axle rotates. Each of the profile wheels is disposed across a width of the ribbon beam and has a position corresponding to a location along the width of the beam.
    Type: Grant
    Filed: December 24, 2009
    Date of Patent: November 1, 2011
    Assignee: Varian Semiconductor Equipment Associates, Inc.
    Inventors: Neil J. Bassom, Leo V. Klos, Joseph C. Olson
  • Patent number: 8022371
    Abstract: A cathode having electron production and focusing grooves for an ion source of an ion implanter system, the ion source and a related method are disclosed. In one embodiment, the cathode includes a working surface having a plurality of electron production and focusing grooves positioned therein. A repeller of the ion source may be similarly structured.
    Type: Grant
    Filed: February 9, 2010
    Date of Patent: September 20, 2011
    Assignee: Varian Semiconductor Equipment Associates, Inc.
    Inventor: Neil J. Bassom
  • Publication number: 20110220144
    Abstract: An ion source includes an arc chamber housing defining an arc chamber having an extraction aperture, and a wiper. The wiper is positioned within the arc chamber in a parked position and configured to be driven from the parked position to operational positions to clean the extraction aperture. A cleaning sub-assembly for an ion source includes a wiper configured to be positioned within an arc chamber of the ion source when in a parked position and driven from the parked position to operational positions to clean an extraction aperture of the ion source.
    Type: Application
    Filed: March 10, 2010
    Publication date: September 15, 2011
    Applicant: VARIAN SEMICONDUCTOR EQUIPMENT ASSOCIATES, INC.
    Inventors: Craig R. CHANEY, Alexander S. Perel, Neil J. Bassom, Leo V. Klos
  • Patent number: 8003959
    Abstract: In an ion implanter, a Faraday cup is utilized to receive an ion beam generated during ion source cleaning. The detected beam has an associated mass spectrum which indicates when the ion source cleaning process is complete. The mass spectrum results in a signal composed of a cleaning agent and the material comprising the ion source. This signal will rise over time as the ion source chamber is being cleaned and will level-off and remain constant once the deposits are etched away from the source chamber, thereby utilizing existing implant tools to determine endpoint detection during ion source cleaning.
    Type: Grant
    Filed: June 26, 2009
    Date of Patent: August 23, 2011
    Assignee: Varian Semiconductor Equipment Associates, Inc.
    Inventors: Wilhelm P. Platow, Neil J. Bassom, Peter F. Kurunczi, Alexander S. Perel, Craig R. Chaney
  • Publication number: 20110155929
    Abstract: An ion beam blocking array configured to provide a mechanical means for adjusting the beam current profile of an ion ribbon beam by blocking the beam current at one or more locations across the ribbon beam. The ion beam blocking array includes a drive motor, an axle connected to the drive motor and a plurality of profile wheels disposed along the axle where each of the profile wheels is configured to rotate when the axle rotates. Each of the profile wheels is disposed across a width of the ribbon beam and has a position corresponding to a location along the width of the beam.
    Type: Application
    Filed: December 24, 2009
    Publication date: June 30, 2011
    Applicant: Varian Semiconductor Equipment Associates, Inc.
    Inventors: Neil J. Bassom, Leo V. Klos, Joseph C. Olson
  • Publication number: 20110143527
    Abstract: Herein an improved technique for generating uniform ion beam is disclosed. In one particular exemplary embodiment, the technique may be realized as a method for processing a substrate with an ion implanter comprising an ion source. The method may comprise: introducing dopant into an ion source chamber of the ion source, the dopant may comprise molecules containing boron and hydrogen; introducing diluent into the ion source chamber, the diluent containing halogen; ionizing the dopant and the diluent into molecular ions and halogen containing ions, the molecular ions containing boron and hydrogen; extracting the molecular ions and the halogen containing ions from the ions source chamber; and directing the molecular ions toward the substrate, where the halogen containing ions may improve uniformity of the molecular ions extracted from the ion source and extend the lifetime of the ion source.
    Type: Application
    Filed: December 9, 2010
    Publication date: June 16, 2011
    Applicant: VARIAN SEMICONDUCTOR EQUIPMENT ASSOCIATES, INC.
    Inventors: Wilhelm P. PLATOW, Neil J. Bassom, Peter F. Kurunczi, Alexander S. Perel, Craig R. Chaney
  • Publication number: 20100327159
    Abstract: In an ion implanter, a Faraday cup is utilized to receive an ion beam generated during ion source cleaning. The detected beam has an associated mass spectrum which indicates when the ion source cleaning process is complete. The mass spectrum results in a signal composed of a cleaning agent and the material comprising the ion source. This signal will rise over time as the ion source chamber is being cleaned and will level-off and remain constant once the deposits are etched away from the source chamber, thereby utilizing existing implant tools to determine endpoint detection during ion source cleaning.
    Type: Application
    Filed: June 26, 2009
    Publication date: December 30, 2010
    Applicant: VARIAN SEMICONDUCTOR EQUIPMENT ASSOCIATES, INC.
    Inventors: Wilhelm P. Platow, Neil J. Bassom, Peter F. Kurunczi, Alexander S. Perel, Craig R. Chaney