Patents Assigned to Axcelis Technologies
  • Publication number: 20110101213
    Abstract: Methods and a system of an ion implantation system are disclosed that are capable of increasing beam current above a maximum kinetic energy of a first charge state from an ion source without changing the charge state at the ion source. Positive ions having a first positive charge state are selected into an accelerator. The positive ions of the first positive charge state are accelerated in acceleration stages and stripped to convert them to positive ions of a second charge state. A second kinetic energy level higher than the maximum kinetic energy level of the first charge state can be obtained.
    Type: Application
    Filed: October 30, 2009
    Publication date: May 5, 2011
    Applicant: Axcelis Technologies, Inc.
    Inventor: Shu Satoh
  • Patent number: 7924159
    Abstract: The present invention involves a system and method of remotely detecting the presence of a wafer comprising, a passive RFID circuit, wherein the RFID circuit is attached to an end of a transfer arm located inside a vacuum chamber of an ion implantation system, a reader located outside the vacuum chamber, and wherein the RFID tag provides an indication relating to whether or not a wafer is secured by the transfer arm.
    Type: Grant
    Filed: January 30, 2008
    Date of Patent: April 12, 2011
    Assignee: Axcelis Technologies Inc.
    Inventors: Kan Ota, Michael Chen, David K. Bernhardt
  • Patent number: 7915597
    Abstract: A system and method extraction electrode system, comprising an extraction electrode, wherein the extraction electrode, further defines an aperture and forms a portion of the outside wall of the ion source and is configured to extract ions from the ion source, a suppression disk half assembly comprising two suppression electrode plate disk halves that form a variable suppression aperture, a ground disk half assembly comprising two ground electrode plate disk halves that form an variable ground aperture, wherein the suppression disk half assembly is configured between the extraction electrode and the ground disk half assembly, wherein the suppression aperture and the ground aperture variable in the direction perpendicular to the ion beam direction of travel, and wherein the extraction electrode system is used with a pendulum reciprocating drive apparatus.
    Type: Grant
    Filed: March 18, 2008
    Date of Patent: March 29, 2011
    Assignee: Axcelis Technologies, Inc.
    Inventors: Yongzhang Huang, Ilya Pokidov
  • Patent number: 7897944
    Abstract: An ion beam angle detection apparatus, comprising a linear drive assembly fixedly attached to a moveable profiler assembly, wherein the profiler assembly comprises, a profiler having a profiler aperture formed within a profiler top plate and a profiler sensor assembly, a moveable angle mask assembly comprising a moveable angle mask with a mask aperture, wherein the angle mask assembly is non-fixedly attached to the profiler assembly, the mask aperture is movable relative to the profiler aperture by energizing an mask linear drive fixedly attached to the profiler assembly and the profiler aperture is movable through a length greater than the elongated length of the ion beam.
    Type: Grant
    Filed: July 21, 2008
    Date of Patent: March 1, 2011
    Assignee: Axcelis Technologies, Inc.
    Inventors: Robert J. Mitchell, Bo H. Vanderberg
  • Patent number: 7892357
    Abstract: A baffle plate assembly for distributing gas flows into an adjacent process chamber containing a semiconductor wafer to be processed includes a planar gas distribution portion having a plurality of apertures therein; a flange surrounding the gas distribution portion; and an impingement device centrally attached to the gas distribution portion, wherein the device includes a cap and a stem, the stem being in thermal contact with the gas distribution portion. Also disclosed herein are plasma reactors employing the baffle plate assembly and methods for reducing recombination of species in a plasma.
    Type: Grant
    Filed: January 12, 2004
    Date of Patent: February 22, 2011
    Assignee: Axcelis Technologies, Inc.
    Inventor: Aseem K. Srivastava
  • Publication number: 20110036500
    Abstract: An antenna array for a radio frequency plasma process chamber including, an array of electrodes, an array of dielectric tubes concentrically disposed about each electrode tube to define a chamber configured to be at atmospheric pressure between an outer surface of each electrode tube and an inner surface of the corresponding dielectric tube, and a hermetic seal between each dielectric tube and the plasma process chamber configured to allow a vacuum or low pressure environment in the plasma process chamber.
    Type: Application
    Filed: October 22, 2010
    Publication date: February 17, 2011
    Applicant: AXCELIS TECHNOLOGIES, INC.
    Inventors: William F. DiVergilio, Aseem K. Srivastava
  • Patent number: 7888661
    Abstract: A system and methods are provided for mitigating or removing workpiece surface contaminants or conditions. Methods of the invention provide treatment of the wafer surface to provide a known surface condition. The surface condition can then be maintained during and following implantation of the workpiece surface with a dopant.
    Type: Grant
    Filed: February 13, 2008
    Date of Patent: February 15, 2011
    Assignee: Axcelis Technologies Inc.
    Inventor: Ivan L. Berry, III
  • Publication number: 20110027957
    Abstract: A method of doping a semiconductor body is provided herein. In one embodiment, a semiconductor body is exposed to an activated hydrogen gas for a predetermined time period and temperature. The activated hydrogen gas that is configured to react with a surface of a semiconductor body. The activated hydrogen gas breaks existing bonds in the substrate (e.g., silicon-silicon bonds), thereby forming a reactive layer comprising weakened (e.g., silicon-hydrogen (Si—H) bonds, silanol (Si—OH) bonds) and/or dangling bonds (e.g., dangling silicon bonds). The dangling bonds, in addition to the easily broken weakened bonds, comprise reactive sites that extend into one or more surfaces of the semiconductor body. A reactant (e.g., n-type dopant, p-type dopant) may then be introduced to contact the reactive layer of the semiconductor body. The reactant chemically bonds to reactive sites comprised within the reactive layer, thereby resulting in a doped layer within the semiconductor body comprising the reactant.
    Type: Application
    Filed: July 29, 2009
    Publication date: February 3, 2011
    Applicant: Axcelis Technologies, Inc.
    Inventor: Ivan L. Berry
  • Publication number: 20110012033
    Abstract: An apparatus is provided for reducing particle contamination in an ion implantation system. The apparatus has an enclosure having an entrance, an exit, and at least one louvered side having a plurality of louvers defined therein. A beamline of the ion implantation system passes through the entrance and exit, wherein the plurality of louvers of the at least one louvered side are configured to mechanically filter an edge of an ion beam traveling along the beamline. The enclosure can have two louvered sides and a louvered top, wherein respective widths of the entrance and exit of the enclosure, when measured perpendicular to the beamline, are generally defined by a position of the two louvered sides with respect to one another. One or more of the louvered sides can be adjustably mounted, wherein the width of one or more of the entrance and exit of the enclosure is controllable.
    Type: Application
    Filed: July 13, 2010
    Publication date: January 20, 2011
    Applicant: Axcelis Technologies, Inc.
    Inventor: Neil K. Colvin
  • Publication number: 20110001059
    Abstract: An ion implantation system includes a beamline configured to direct an ion beam toward an end station configured to hold or support a workpiece, and a scanning system. The scanning system is configured to scan the end station past the ion beam in a two-dimensional fashion comprising a first scan axis along a first direction and a second scan axis along a second direction that is different than the first direction. The system further includes a supplemental scanning component operably associated with the scanning system, and configured to effectuate a scanning of the ion beam with respect to the end station along a third scan axis having a third direction that is different than the first direction.
    Type: Application
    Filed: June 29, 2010
    Publication date: January 6, 2011
    Applicant: Axcelis Technologies, Inc.
    Inventor: Andy Ray
  • Patent number: 7858955
    Abstract: An ion beam uniformity control system, wherein the uniformity control system comprising a differential pumping chamber that encloses an array of individually controlled gas jets, wherein the gas pressure of the individually controlled gas jets are powered by a controller to change the fraction of charge exchanged ions, and wherein the charge exchange reactions between the gas and ions change the fraction of the ions with original charge state of a broad ion beam, wherein the charge exchanged portion of the broad ion beam is removed utilizing an deflector that generates a magnetic field, a Faraday cup profiler for measuring the broad ion beam profile; and adjusting the individually controlled gas jets based upon feedback provided to the controller to obtain the desired broad ion beam.
    Type: Grant
    Filed: June 25, 2008
    Date of Patent: December 28, 2010
    Assignee: Axcelis Technologies, Inc.
    Inventors: Shu Satoh, Edward C. Eisner, Manny Sieradzki
  • Publication number: 20100308215
    Abstract: A method comprising introducing an injected gas (e.g., Argon, Xenon) into a beam line region comprising a magnetic scanner is provided herein. The injected gas improves beam current by enhancing (e.g., increasing, decreasing) charge neutralization of the magnetic ion beam (e.g., the ion beam at regions where the scanning magnetic field is non-zero) thereby reducing the current loss due to the zero field effect (ZFE). By reducing the current loss in regions having a magnetic field, the magnetic beam current is increased (e.g., the beam current is increased in regions where the magnetic field is non-zero) raising the overall beam current in a uniform manner over an entire scan path and thereby reducing the effect of the ZFE. In other words, the ZFE is removed by effectively minimizing it through an increase in the magnetized beam current.
    Type: Application
    Filed: June 8, 2010
    Publication date: December 9, 2010
    Applicant: Axcelis Technologies Inc.
    Inventors: Bo H. Vanderberg, Steven C. Hays, Andy Ray
  • Patent number: 7845310
    Abstract: An antenna array for a radio frequency plasma process chamber including, an array of electrodes, an array of dielectric tubes concentrically disposed about each electrode tube to define a chamber configured to be at atmospheric pressure between an outer surface of each electrode tube and an inner surface of the corresponding dielectric tube, and a hermetic seal between each dielectric tube and the plasma process chamber configured to allow a vacuum or low pressure in the plasma process chamber.
    Type: Grant
    Filed: December 6, 2006
    Date of Patent: December 7, 2010
    Assignee: Axcelis Technologies, Inc.
    Inventors: William F. DiVergilio, Aseem K. Srivastava
  • Patent number: 7842931
    Abstract: An extraction electrode manipulator system, comprising an ion source, a suppression electrode and a ground electrode, wherein the two electrode are supported by coaxially arranged two water cooled support tubes. A high voltage insulator ring is located on the other end of the coaxial support tube system to act as a mechanical support of the inner tube and also as a high voltage vacuum feedthrough to prevent sputtering and coating of the insulating surface.
    Type: Grant
    Filed: September 25, 2008
    Date of Patent: November 30, 2010
    Assignee: Axcelis Technologies, Inc.
    Inventors: Shu Satoh, John Adamik, Manny Sieradzki
  • Publication number: 20100289510
    Abstract: A method for solid material detection in a medium includes receiving an exhaust gas downstream with respect to a workpiece from which a photoresist material is removed. An electromagnetic circuit is configured to include the exhaust gas, the exhaust gas is excited with electromagnetic energy and an impedance value of the electromagnetic circuit is determined, wherein the impedance value corresponds to an amount of solid material within the exhaust gas.
    Type: Application
    Filed: July 26, 2010
    Publication date: November 18, 2010
    Applicant: AXCELIS TECHNOLOGIES, INC.
    Inventors: Richard E. Pingree, JR., Palanikumara Sakthivel, Mahesh Vanodia, Michael B. Colson
  • Patent number: 7821655
    Abstract: An apparatus and process for in-situ measurement of thin film thickness, ash rate, and end point generally include generating and measuring shallow angle interference patterns. The apparatus generally includes a chamber having a first viewing port and a second viewing port. The first viewing port includes receiving optics configured to receive light at a shallow angle from a surface of a substrate processed therein. The second port includes a broadband illumination source and is preferably disposed in a sidewall opposite the receiving optics. The process includes calculating the thin film thickness, ash rate, and end point from the interference patterns.
    Type: Grant
    Filed: February 8, 2005
    Date of Patent: October 26, 2010
    Assignee: Axcelis Technologies, Inc.
    Inventors: Alan Janos, Montien Saubhayana
  • Patent number: 7800083
    Abstract: A plasma electron flood system, comprising a housing configured to contain a gas, and comprising an elongated extraction slit, and a cathode and a plurality of anodes residing therein and wherein the elongated extraction slit is in direct communication with an ion implanter, wherein the cathode emits electrons that are drawn to the plurality of anodes through a potential difference therebetween, wherein the electrons are released through the elongated extraction slit as an electron band for use in neutralizing a ribbon ion beam traveling within the ion implanter.
    Type: Grant
    Filed: November 6, 2007
    Date of Patent: September 21, 2010
    Assignee: Axcelis Technologies, Inc.
    Inventors: Bo H. Vanderberg, William F. DiVergilio
  • Patent number: 7794663
    Abstract: A method for solid material detection in a medium includes receiving an exhaust gas downstream with respect to a workpiece from which a photoresist material is removed. An electromagnetic circuit is configured to include the exhaust gas, the exhaust gas is excited with electromagnetic energy and an impedance value of the electromagnetic circuit is determined, wherein the impedance value corresponds to an amount of solid material within the exhaust gas.
    Type: Grant
    Filed: February 19, 2004
    Date of Patent: September 14, 2010
    Assignee: Axcelis Technologies, Inc.
    Inventors: Richard E. Pingree, Jr., Palanikumara Sakthivel, Muhesh Vanodia, Michael B. Colson
  • Patent number: 7789443
    Abstract: A gripper for use with a robot includes a support body for removably attaching the gripper to a moveable arm and a workpiece contact body having a groove extending along at least a portion of the contact body for engaging a curved outer edge of the workpiece. A coupling member connects the support body to the workpiece contact member and includes a flexure component that flexes to allow radial and/or tangential relative movement of the workpiece contact body with respect to the support body to diminish slippage between the workpiece and the contact body as the gripper engages the workpiece.
    Type: Grant
    Filed: March 16, 2007
    Date of Patent: September 7, 2010
    Assignee: Axcelis Technologies, Inc.
    Inventors: Joseph Gillespie, Alexander H Slocum, Allan Weed
  • Publication number: 20100187447
    Abstract: The present invention is directed to an apparatus and method of forming a thermos layer surrounding a chuck for holding a wafer during ion implantation. The thermos layer is located below a clamping surface, and comprises a vacuum gap and an outer casing encapsulating the vacuum gap. The thermos layer provides a barrier blocking condensation to the outside of the chuck within a process chamber by substantially preventing heat transfer between the chuck when it is cooled and the warmer environment within the process chamber.
    Type: Application
    Filed: January 23, 2009
    Publication date: July 29, 2010
    Applicant: Axcelis Technologies, Inc.
    Inventors: William D. Lee, Ashwin M. Purohit, Marvin R. LaFontaine