Patents by Inventor Jonathan Gerald England

Jonathan Gerald England 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: 9018064
    Abstract: A method of doping the polycrystalline channel in a vertical FLASH device is disclosed. This method uses a plurality of high energy ion implants to dope the channel at various depths of the channel. In some embodiments, these ion implants are performed at an angle offset from the normal direction, such that the implanted ions pass through at least a portion of the surrounding ONO stack. By passing through the ONO stack, the distribution of ranges reached by each ion may differ from that created by a vertical implant.
    Type: Grant
    Filed: July 10, 2013
    Date of Patent: April 28, 2015
    Assignee: Varian Semiconductor Equipment Associates, Inc.
    Inventors: Andrew M. Waite, Jonathan Gerald England, Rajesh Prasad
  • Publication number: 20150017772
    Abstract: A method of doping the polycrystalline channel in a vertical FLASH device is disclosed. This method uses a plurality of high energy ion implants to dope the channel at various depths of the channel. In some embodiments, these ion implants are performed at an angle offset from the normal direction, such that the implanted ions pass through at least a portion of the surrounding ONO stack. By passing through the ONO stack, the distribution of ranges reached by each ion may differ from that created by a vertical implant.
    Type: Application
    Filed: July 10, 2013
    Publication date: January 15, 2015
    Inventors: Andrew M. Waite, Jonathan Gerald England, Rajesh Prasad
  • Patent number: 8846508
    Abstract: Methods to implant ions into the sidewall of a three dimensional high aspect ratio feature, such as a trench or via, are disclosed. The methods utilize a phenomenon known as knock-in, which causes a first species of ions, already disposed in the fill material, to become implanted in the sidewall when these ions are struck by ions of a second species being implanted into the fill material. In some embodiments, these first species and second species have similar masses to facilitate knock-in. In some embodiments, the entire hole is not completely filled with fill material. Rather, some fill material is deposited, an ion implant is performed to cause knock-in to the sidewall adjacent to the deposited fill material, and the process is repeated until the hole is filled.
    Type: Grant
    Filed: July 15, 2013
    Date of Patent: September 30, 2014
    Assignee: Varian Semiconductor Equipment Associates, Inc.
    Inventors: Jonathan Gerald England, Andrew M. Waite, Simon Ruffell
  • Patent number: 8450193
    Abstract: Techniques for temperature-controlled ion implantation are disclosed. In one particular exemplary embodiment, the techniques may be realized as an apparatus for temperature-controlled ion implantation. The apparatus may comprise a platen to hold a wafer in a single-wafer process chamber during ion implantation, the platen including: a wafer clamping mechanism to secure the wafer onto the platen and to provide a predetermined thermal contact between the wafer and the platen, and one or more heating elements to pre-heat and maintain the platen in a predetermined temperature range above room temperature. The apparatus may also comprise a post-cooling station to cool down the wafer after ion implantation. The apparatus may further comprise a wafer handling assembly to load the wafer onto the pre-heated platen and to remove the wafer from the platen to the post-cooling station.
    Type: Grant
    Filed: June 28, 2007
    Date of Patent: May 28, 2013
    Assignee: Varian Semiconductor Equipment Associates, Inc.
    Inventors: Jonathan Gerald England, Richard Stephen Muka, Edwin A. Arevalo, Ziwei Fang, Vikram Singh
  • Patent number: 7888636
    Abstract: Techniques for measuring energy contamination using time-of-flight (TOF) sensor are disclosed. In one particular exemplary embodiment, the techniques may be realized as a method for detecting energy contamination in an ion beam using time-of-flight comprising directing an ion beam towards an entrance of a sensor, wherein the ion beam may include charged particles and neutral particles, blocking the ion beam periodically from entering the sensor and allowing a pulse of the ion beam to enter the sensor periodically using a gate mechanism, separating the charged particles and the neutral particles of the ion beam pulse based at least in part upon different transit times over a distance caused by variations in at least one of mass and energy associated with the charged particles and the neutral particles, and detecting at least one of the charged particles and the neutral particles separately at a detector based at least in part upon the different transit times.
    Type: Grant
    Filed: November 1, 2007
    Date of Patent: February 15, 2011
    Assignee: Varian Semiconductor Equipment Associates, Inc.
    Inventors: Bon Woong Koo, Jonathan Gerald England
  • Patent number: 7655933
    Abstract: Techniques for temperature-controlled ion implantation are disclosed. In one particular exemplary embodiment, the techniques may be realized as an apparatus for high-temperature ion implantation. The apparatus may comprise a platen to hold a wafer in a single-wafer process chamber during ion implantation, the platen having a wafer interface to provide a predetermined thermal contact between the wafer and the platen. The apparatus may also comprise an array of heating elements to heat the wafer while the wafer is held on the platen to achieve a predetermined temperature profile on the wafer during ion implantation, the heating elements being external to the platen. The apparatus may further comprise a post-implant cooling station to cool down the wafer after ion implantation of the wafer.
    Type: Grant
    Filed: July 16, 2007
    Date of Patent: February 2, 2010
    Assignee: Varian Semiconductor Equipment Associates, Inc.
    Inventors: Jonathan Gerald England, Richard Stephen Muka, Scott C Holden
  • Patent number: 7642150
    Abstract: Techniques for forming shallow junctions are disclosed. In one particular exemplary embodiment, the techniques may be realized as a method for forming shallow junctions. The method may comprise generating an ion beam comprising molecular ions based on one or more materials selected from a group consisting of: digermane (Ge2H6), germanium nitride (Ge3N4), germanium-fluorine compounds (GFn, wherein n=1, 2, or 3), and other germanium-containing compounds. The method may also comprise causing the ion beam to impact a semiconductor wafer.
    Type: Grant
    Filed: April 10, 2007
    Date of Patent: January 5, 2010
    Assignee: Varian Semiconductor Equipment Associates, Inc.
    Inventors: Edwin A. Arevalo, Christopher R. Hatem, Anthony Renau, Jonathan Gerald England
  • Patent number: 7622722
    Abstract: An ion implantation device with a dual pumping mode and method thereof for use in producing atomic or molecular ion beams are disclosed. In one particular exemplary embodiment, an ion implantation apparatus is provided for controlling a pressure within an ion beam source housing corresponding to an ion beam species being produced. The ion implantation apparatus may include the ion beam source housing comprising a plurality of species for use in ion beam production. A pumping section may also be included for evacuating gas from the ion beam source housing. A controller may further be included for controlling the pumping section according to pumping parameters corresponding to a species of the plurality of species being used for ion beam production.
    Type: Grant
    Filed: October 2, 2007
    Date of Patent: November 24, 2009
    Assignee: Varian Semiconductor Equipment Associates, Inc.
    Inventors: Jonathan Gerald England, Christopher R. Hatem, Jay Thomas Scheuer, Joseph C. Olson
  • Patent number: 7561983
    Abstract: A technique for improving ion implantation based on ion beam angle-related information is disclosed. In one particular exemplary embodiment, the technique may be realized as a method for improving ion implantation. The method may comprise obtaining angle-related information associated with an ion beam. The method may also comprise calculating, based on the angle-related information, an ion beam angle distribution over a wafer for one or more potential scanning modes. The method may further comprise selecting a desired scanning mode from the one or more potential scanning modes based on an evaluation of performance metric caused by the ion beam angle distribution.
    Type: Grant
    Filed: September 29, 2006
    Date of Patent: July 14, 2009
    Assignee: Varian Semiconductor Equipment Associates, Inc.
    Inventors: Atul Gupta, Jonathan Gerald England
  • Patent number: 7547900
    Abstract: Techniques for providing a ribbon-shaped gas cluster ion beam are disclosed. In one particular exemplary embodiment, the techniques may be realized as an apparatus for providing a ribbon-shaped gas cluster ion beam. The apparatus may comprise at least one nozzle configured to inject a source gas at a sufficient speed into a low-pressure vacuum space to form gas clusters. The apparatus may also comprise at least one ionizer that causes at least a portion of the gas clusters to be ionized. The apparatus may further comprise a beam-shaping mechanism that forms a ribbon-shaped gas cluster ion beam based on the ionized gas clusters.
    Type: Grant
    Filed: December 22, 2006
    Date of Patent: June 16, 2009
    Assignee: Varian Semiconductor Equipment Associates, Inc.
    Inventors: Anthony Renau, Joseph C. Olson, Jonathan Gerald England
  • Publication number: 20090114813
    Abstract: Techniques for measuring energy contamination using time-of-flight (TOF) sensor are disclosed. In one particular exemplary embodiment, the techniques may be realized as a method for detecting energy contamination in an ion beam using time-of-flight comprising directing an ion beam towards an entrance of a sensor, wherein the ion beam may include charged particles and neutral particles, blocking the ion beam periodically from entering the sensor and allowing a pulse of the ion beam to enter the sensor periodically using a gate mechanism, separating the charged particles and the neutral particles of the ion beam pulse based at least in part upon different transit times over a distance caused by variations in at least one of mass and energy associated with the charged particles and the neutral particles, and detecting at least one of the charged particles and the neutral particles separately at a detector based at least in part upon the different transit times.
    Type: Application
    Filed: November 1, 2007
    Publication date: May 7, 2009
    Applicant: Varian Semiconductor Equipment Associates, Inc.
    Inventors: Bon Woong KOO, Jonathan Gerald ENGLAND
  • Patent number: 7528392
    Abstract: Techniques for low-temperature ion implantation are disclosed. In one particular exemplary embodiment, the techniques may be realized as an apparatus for low-temperature ion implantation. The apparatus may comprise a wafer support mechanism to hold a wafer during ion implantation and to facilitate movement of the wafer in at least one dimension. The apparatus may also comprise a cooling mechanism coupled to the wafer support mechanism. The cooling mechanism may comprise a refrigeration unit, a closed loop of rigid pipes to circulate at least one coolant from the refrigeration unit to the wafer support mechanism, and one or more rotary bearings to couple the rigid pipes to accommodate the movement of the wafer in the at least one dimension.
    Type: Grant
    Filed: April 10, 2007
    Date of Patent: May 5, 2009
    Assignee: Varian Semiconductor Equipment Associates, Inc.
    Inventors: Jonathan Gerald England, Richard Stephen Muka, D. Jeffrey Lischer
  • Patent number: 7482598
    Abstract: Techniques for preventing parasitic beamlets from affecting ion implantation are disclosed. In one particular exemplary embodiment, the techniques may be realized as an apparatus for preventing parasitic beamlets from affecting ion implantation. The apparatus may comprise a controller that is configured to scan a spot beam back and forth, thereby forming an ion beam spanning a predetermined width. The apparatus may also comprise an aperture mechanism that, if kept stationary, allows the spot beam to pass through. The apparatus may further comprise a synchronization mechanism, coupled to the controller and the aperture mechanism, that is configured to cause the aperture mechanism to move in synchronization with the scanned spot beam, allowing the scanned spot beam to pass through but blocking one or more parasitic beamlets associated with the spot beam.
    Type: Grant
    Filed: December 6, 2006
    Date of Patent: January 27, 2009
    Assignee: Varian Semiconductor Equipment Associates, Inc.
    Inventors: Russell J. Low, Jonathan Gerald England, Stephen E. Krause, Eric D. Hermanson
  • Patent number: 7476878
    Abstract: Techniques for reducing effects of photoresist outgassing are disclosed. In one particular exemplary embodiment, the techniques may be realized as an apparatus for reducing effects of photoresist outgassing in an ion implanter. The apparatus may comprise a drift tube located between an end-station and an upstream beamline component. The apparatus may also comprise a first variable aperture between the drift tube and the end-station. The apparatus may further comprise a second variable aperture between the drift tube and the upstream beamline component. The first variable aperture and the second variable aperture can be adjusted to facilitate differential pumping.
    Type: Grant
    Filed: December 6, 2006
    Date of Patent: January 13, 2009
    Assignee: Varian Semiconductor Equipment Associates, Inc.
    Inventors: Russell J. Low, Jonathan Gerald England, Stephen E. Krause, Eric D. Hermanson
  • Patent number: 7446326
    Abstract: A technique for improving ion implanter productivity is disclosed. In one particular exemplary embodiment, the technique may be realized as a method for improving productivity of an ion implanter having an ion source chamber. The method may comprise supplying a gaseous substance to the ion source chamber, the gaseous substance comprising one or more reactive species for generating ions for the ion implanter. The method may also comprise stopping the supply of the gaseous substance to the ion source chamber. The method may further comprise supplying a hydrogen containing gas to the ion source chamber for a period of time after stopping the supply of the gaseous substance.
    Type: Grant
    Filed: March 31, 2006
    Date of Patent: November 4, 2008
    Assignee: Varian Semiconductor Equipment Associates, Inc.
    Inventors: Craig R. Chaney, Russell J. Low, Jonathan Gerald England
  • Publication number: 20080149826
    Abstract: Techniques for providing a ribbon-shaped gas cluster ion beam are disclosed. In one particular exemplary embodiment, the techniques may be realized as an apparatus for providing a ribbon-shaped gas cluster ion beam. The apparatus may comprise at least one nozzle configured to inject a source gas at a sufficient speed into a low-pressure vacuum space to form gas clusters. The apparatus may also comprise at least one ionizer that causes at least a portion of the gas clusters to be ionized. The apparatus may further comprise a beam-shaping mechanism that forms a ribbon-shaped gas cluster ion beam based on the ionized gas clusters.
    Type: Application
    Filed: December 22, 2006
    Publication date: June 26, 2008
    Applicant: Varian Semiconductor Equipment Associates, Inc.
    Inventors: Anthony RENAU, Joseph C. Olson, Jonathan Gerald England
  • Publication number: 20080121821
    Abstract: Techniques for low-temperature ion implantation are disclosed. In one particular exemplary embodiment, the techniques may be realized as a wafer support assembly for low-temperature ion implantation. The wafer support assembly may comprise a base. The wafer support assembly may also comprise a platen configured to mount to the base via one or more low-thermal-contact members, wherein the platen has a heat capacity larger than that of a wafer mounted thereon, such that, if pre-chilled to a predetermined temperature, the platen causes the wafer to stay within a range of the predetermined temperature during ion implantation.
    Type: Application
    Filed: April 4, 2007
    Publication date: May 29, 2008
    Applicant: Varian Semiconductor Equipment Associates Inc.
    Inventors: Richard Stephen Muka, Christopher Andreas Rowland, Jonathan Gerald England
  • Publication number: 20080124903
    Abstract: Techniques for low-temperature ion implantation are disclosed. In one particular exemplary embodiment, the techniques may be realized as an apparatus for low-temperature ion implantation. The apparatus may comprise a wafer support mechanism to hold a wafer during ion implantation and to facilitate movement of the wafer in at least one dimension. The apparatus may also comprise a cooling mechanism coupled to the wafer support mechanism. The cooling mechanism may comprise a refrigeration unit, a closed loop of rigid pipes to circulate at least one coolant from the refrigeration unit to the wafer support mechanism, and one or more rotary bearings to couple the rigid pipes to accommodate the movement of the wafer in the at least one dimension.
    Type: Application
    Filed: April 10, 2007
    Publication date: May 29, 2008
    Applicant: Varian Semiconductor Equipment Associates, Inc.
    Inventors: Jonathan Gerald ENGLAND, Richard Stephen Muka, D. Jeffrey Lischer
  • Publication number: 20080108208
    Abstract: Techniques for forming shallow junctions are disclosed. In one particular exemplary embodiment, the techniques may be realized as a method for forming shallow junctions. The method may comprise generating an ion beam comprising molecular ions based on one or more materials selected from a group consisting of: digermane (Ge2H6), germanium nitride (Ge3N4), germanium-fluorine compounds (GFn, wherein n=1, 2, or 3), and other germanium-containing compounds. The method may also comprise causing the ion beam to impact a semiconductor wafer.
    Type: Application
    Filed: April 10, 2007
    Publication date: May 8, 2008
    Applicant: Varian Semiconductor Equipment Associates, Inc.
    Inventors: Edwin A. Arevalo, Christopher R. Hatem, Anthony Renau, Jonathan Gerald England
  • Publication number: 20080105833
    Abstract: An ion implantation device with a dual pumping mode and method thereof for use in producing atomic or molecular ion beams are disclosed. In one particular exemplary embodiment, an ion implantation apparatus is provided for controlling a pressure within an ion beam source housing corresponding to an ion beam species being produced. The ion implantation apparatus may include the ion beam source housing comprising a plurality of species for use in ion beam production. A pumping section may also be included for evacuating gas from the ion beam source housing. A controller may further be included for controlling the pumping section according to pumping parameters corresponding to a species of the plurality of species being used for ion beam production.
    Type: Application
    Filed: October 2, 2007
    Publication date: May 8, 2008
    Applicant: Varian Semiconductor Equipment Associates,
    Inventors: Jonathan Gerald England, Christopher R. Hatem, Jay Thomas Scheuer, Joseph C. Olson