Patents Assigned to Axcelis Technologies, Inc.
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Patent number: 8035080Abstract: 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: GrantFiled: October 30, 2009Date of Patent: October 11, 2011Assignee: Axcelis Technologies, Inc.Inventor: Shu Satoh
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Publication number: 20110226280Abstract: A plasma ashing process for removing photoresist, polymers and/or residues from a substrate comprises placing the substrate including the photoresist, polymers, and/or residues into a reaction chamber; generating a plasma from a gas mixture comprising oxygen gas (O2) and/or an oxygen containing gas; suppressing and/or reducing fast diffusing species in the plasma; and exposing the substrate to the plasma to selectively remove the photoresist, polymers, and/or residues from the substrate, wherein the plasma is substantially free from fast diffusing species.Type: ApplicationFiled: May 27, 2011Publication date: September 22, 2011Applicant: AXCELIS TECHNOLOGIES, INC.Inventors: Ivan L. Berry, Carlo Waldfried, Shijian Luo, Orlando Escorcia
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Patent number: 8023247Abstract: The present invention is directed to an electrostatic chuck (ESC) with a compliant layer formed from TT-Kote® and a method of forming a clamping plate for an ESC. The ESC comprises a compliant layer having a low friction surface for reducing or eliminating particulates generated from thermal expansion. The method comprises forming a clamping member for a substrate comprising a ceramic material and a ceramic surface, and coating the ceramic surface with a compliant layer comprising an organic silicide or TT-Kote®.Type: GrantFiled: December 10, 2008Date of Patent: September 20, 2011Assignee: Axcelis Technologies, Inc.Inventors: Ashwin M. Purohit, Marvin R. LaFontaine, William D. Lee, Richard J. Rzeszut
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Publication number: 20110215262Abstract: A method and apparatus is provided for improving implant uniformity of an ion beam experiencing pressure increase along the beam line. The method comprises generating a main scan waveform that moves an ion beam at a substantially constant velocity across a workpiece. A compensation waveform (e.g., quadratic waveform), having a fixed height and waveform, is also generated and mixed with the main scan waveform (e.g., through a variable mixer) to form a beam scanning waveform. The mixture ratio may be adjusted by an instantaneous vacuum pressure signal, which can be performed at much higher speed and ease than continuously modifying scan waveform. The mixture provides a beam scanning waveform comprising a non-constant slope that changes an ion beam's velocity as it moves across a workpiece. Therefore, the resultant beam scanning waveform, with a non-constant slope, is able to account for pressure non-uniformities in dose along the fast scan direction.Type: ApplicationFiled: March 4, 2010Publication date: September 8, 2011Applicant: Axcelis Technologies, Inc.Inventor: Shu Satoh
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Patent number: 8008636Abstract: Ion implantation systems and scanning systems are provided, in which a focus adjustment component is provided to adjust a focal property of an ion beam to diminish zero field effects of the scanner upon the ion beam. The focal property may be adjusted in order to improve the consistency of the beam profile scanned across the workpiece, or to improve the consistency of the ion implantation across the workpiece. Methods are disclosed for providing a scanned ion beam to a workpiece, comprising scanning the ion beam to produce a scanned ion beam, adjusting a focal property of an ion beam in relation to zero field effects of the scanner upon the ion beam, and directing the ion beam toward the workpiece.Type: GrantFiled: December 18, 2008Date of Patent: August 30, 2011Assignee: Axcelis Technologies, Inc.Inventor: Edward C. Eisner
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Patent number: 7994488Abstract: An ion implantation system comprising an ion source that generates an ion beam along a beam path, a mass analyzer component downstream of the ion source that performs mass analysis and angle correction on the ion beam, a resolving aperture electrode comprising at least one electrode downstream of the mass analyzer component and along the beam path having a size and shape according to a selected mass resolution and a beam envelope, a deflection element downstream of the resolving aperture electrode that changes the path of the ion beam exiting the deflection element, a deceleration electrode downstream of the deflection element that decelerates the ion beam, a support platform within an end station for retaining and positioning a workpiece which is implanted with charged ions, and wherein the end station is mounted approximately eight degrees counterclockwise so that the deflected ion beam is perpendicular to the workpiece.Type: GrantFiled: April 24, 2008Date of Patent: August 9, 2011Assignee: Axcelis Technologies, Inc.Inventor: Yongzhang Huang
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Patent number: 7994487Abstract: A method for reducing particle contamination during implantation of ions comprises providing an implantation system for implanting ions into a workpiece via an ion beam, wherein one or more components are under selective vacuum and have one or more contaminants in a first state disposed thereon. A gas is introduced to the implantation system, wherein the gas generally reacts with at least a portion of the one or more contaminants, therein transforming the at least a portion of the one or more contaminants into a second state The at least a portion of the one or more contaminants in the second state remain disposed on the one or more components, and wherein the at least a portion of the second state of the one or more contaminants generally does not produce particle contamination on the one or more workpieces.Type: GrantFiled: May 29, 2009Date of Patent: August 9, 2011Assignee: Axcelis Technologies, Inc.Inventor: Andrew M. Ray
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Publication number: 20110180097Abstract: An apparatus for treating a workpiece, the apparatus comprising a first chamber configured to treat the workpiece at an elevated temperature, the first chamber including an opening for receiving the workpiece; a second chamber in operative communication with the first chamber, the second chamber including an opening for transferring the workpiece to and from the first chamber, wherein the first chamber opening is aligned with the second chamber opening, and wherein a selected one of the first and the second chambers comprises a gate valve configured to selectively open and close access to the first and second chamber openings; and a thermal isolation plate formed of a material effective to substantially prevent heat transfer from the first chamber to the second chamber, wherein the thermal isolation plate is disposed about the first and second chamber openings in a sealing relationship.Type: ApplicationFiled: January 27, 2010Publication date: July 28, 2011Applicant: AXCELIS TECHNOLOGIES, INC.Inventors: Armin Huseinovic, Ivan L. Berry
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Patent number: 7982195Abstract: An ion implanter for creating a ribbon or ribbon-like beam by having a scanning device that produces a side to side scanning of ions emitting by a source to provide a thin beam of ions moving into an implantation chamber. A workpiece support positions a workpiece within the implantation chamber and a drive moves the workpiece support up and down through the thin ribbon beam of ions perpendicular to the plane of the ribbon to achieve controlled beam processing of the workpiece. A control includes a first control output coupled to said scanning device to limit an extent of side to side scanning of the ion beam to less than a maximum amount and thereby limit ion processing of the workpiece to a specified region of the workpiece and a second control output coupled to the drive simultaneously limits an extent of up and down movement of the workpiece to less than a maximum amount and to cause the ion beam to impact a controlled portion of the workpiece.Type: GrantFiled: September 14, 2004Date of Patent: July 19, 2011Assignee: Axcelis Technologies, Inc.Inventors: Aditya Agarwal, Robert D. Rathmell, David Hoglund
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Publication number: 20110171817Abstract: Methods for implanting an aromatic carbon molecule or a selected ionized lower mass byproduct into a workpiece generally includes vaporizing and ionizing aromatic carbon molecule in an ion source to create a plasma and produce aromatic carbon molecules and its ionized lower mass byproducts. The ionized aromatic carbon molecules and lower mass byproducts within the plasma are then extracted to form an ion beam. The ion beam is mass analyzed with a mass analyzer magnet to permit selected ionized aromatic carbon molecules or selected ionized lower mass byproducts to pass therethrough and implant into a workpiece.Type: ApplicationFiled: January 12, 2010Publication date: July 14, 2011Applicant: AXCELIS TECHNOLOGIES, INC.Inventors: W. Davis Lee, Daniel R. Tieger
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Patent number: 7977628Abstract: An ion implantation system comprising an ion source configured to generate an ion beam along a beam path, a mass analyzer is located downstream of the ion source wherein the mass analyzer is configured to perform mass analysis of the ion beam and a beam complementary aperture located downstream of the mass analyzer and along the beam path, the beam complementary aperture having a size and shape corresponding to a cross-sectional beam envelope of the ion beam.Type: GrantFiled: June 25, 2008Date of Patent: July 12, 2011Assignee: Axcelis Technologies, Inc.Inventors: John Francis Grant, Patrick Richard Splinter
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Patent number: 7973290Abstract: The present invention involves a beam energy identification system, comprising an accelerated ion beam, wherein the accelerated ion beam is scanned in a fast scan axis within a beam scanner, wherein the beam scanner is utilized to deflect the accelerated ion beam into narrow faraday cups downstream of the scanner, wherein a difference in scanner voltage or current to position the beam into the Faraday cups is utilized to calculated the energy of ion beam.Type: GrantFiled: August 13, 2008Date of Patent: July 5, 2011Assignee: Axcelis Technologies, Inc.Inventor: Shu Satoh
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Publication number: 20110136346Abstract: Non-oxidizing plasma treatment devices for treating a semiconductor workpiece generally include a substantially non-oxidizing gas source; a plasma generating component in fluid communication with the non-oxidizing gas source; a process chamber in fluid communication with the plasma generating component, and an exhaust conduit centrally located in a bottom wall of the process chamber. In one embodiment, the process chamber is formed of an aluminum alloy containing less than 0.15% copper by weight; In other embodiments, the process chamber includes a coating of a non-copper containing material to prevent formation of copper hydride during processing with substantially non-oxidizing plasma. In still other embodiments, the process chamber walls are configured to be heated during plasma processing. Also disclosed are non-oxidizing plasma processes.Type: ApplicationFiled: December 4, 2009Publication date: June 9, 2011Applicant: AXCELIS TECHNOLOGIES, INC.Inventors: Phillip Geissbühler, Ivan Berry, Armin Huseinovic, Shijian Luo, Aseem Kumar Srivastava, Carlo Waldfried
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Patent number: 7952851Abstract: An electrostatic chuck and method for clamping and de-clamping a workpiece is provided. The ESC comprises a clamping plate having a clamping surface, and one or more electrodes. An electric potential applied to the one or more electrodes selectively clamps the workpiece to the clamping surface. An arc pin operably coupled to the clamping plate and a power source provides an arc for penetrating an insulating layer of the workpiece. The arc pin is selectively connected to an electrical ground, wherein upon removal of the insulative layer of the workpiece, the arc pin provides an electrical ground connection to the workpiece.Type: GrantFiled: October 31, 2008Date of Patent: May 31, 2011Assignee: Axcelis Technologies, Inc.Inventors: Marvin R. LaFontaine, Ari Eiriksson, Ashwin M. Purohit, William D. Lee
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Patent number: 7947966Abstract: An ion source includes a first plasma chamber including a plasma generating component and a first gas inlet for receiving a first gas such that said plasma generating component and said first gas interact to generate a first plasma within said first plasma chamber, wherein said first plasma chamber further defines an aperture for extracting electrons from said first plasma, and a second plasma chamber including a second gas inlet for receiving a second gas, wherein said second plasma chamber further defines an aperture in substantial alignment with the aperture of said first plasma chamber, for receiving electrons extracted therefrom, such that the electrons and the second gas interact to generate a second plasma within said second plasma chamber, said second plasma chamber further defining an extraction aperture for extracting ions from said second plasma.Type: GrantFiled: July 31, 2008Date of Patent: May 24, 2011Assignee: Axcelis Technologies, Inc.Inventor: William F. DiVergilio
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Patent number: 7949425Abstract: An ion implantation apparatus, system, and method are provided for a transferring a plurality of workpieces between vacuum and atmospheric pressures, wherein an alignment mechanism is operable to align a plurality of workpieces for generally simultaneous transportation to a dual-workpiece load lock chamber. The alignment mechanism comprises a characterization device, an elevator, and two vertically-aligned workpiece supports for supporting two workpieces. First and second atmospheric robots are configured to generally simultaneously transfer two workpieces at a time between load lock modules, the alignment mechanism, and a FOUP. Third and fourth vacuum robots are configured to transfer one workpiece at a time between the load lock modules and a process module.Type: GrantFiled: December 6, 2006Date of Patent: May 24, 2011Assignee: Axcelis Technologies, Inc.Inventors: Robert J. Mitchell, Joseph Ferrara
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Publication number: 20110108058Abstract: Some techniques disclosed herein facilitate cleaning residue from a molecular beam component. For example, in an exemplary method, a molecular beam is provided along a beam path, causing residue build up on the molecular beam component. To reduce the residue, the molecular beam component is exposed to a hydro-fluorocarbon plasma. Exposure to the hydro-fluorocarbon plasma is ended based on whether a first predetermined condition is met, the first predetermined condition indicative of an extent of removal of the residue. Other methods and systems are also disclosed.Type: ApplicationFiled: November 11, 2009Publication date: May 12, 2011Applicant: Axcelis Technologies, Inc.Inventors: Aseem K. Srivastava, William F. DiVergilio, Glen R. Gilchrist
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Publication number: 20110101213Abstract: 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: ApplicationFiled: October 30, 2009Publication date: May 5, 2011Applicant: Axcelis Technologies, Inc.Inventor: Shu Satoh
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Patent number: 7924159Abstract: 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: GrantFiled: January 30, 2008Date of Patent: April 12, 2011Assignee: Axcelis Technologies Inc.Inventors: Kan Ota, Michael Chen, David K. Bernhardt
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Patent number: 7915597Abstract: 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: GrantFiled: March 18, 2008Date of Patent: March 29, 2011Assignee: Axcelis Technologies, Inc.Inventors: Yongzhang Huang, Ilya Pokidov