Patents by Inventor Tseh-Jen Hsieh

Tseh-Jen Hsieh 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: 20150179393
    Abstract: An ion source chamber for ion implantation system includes a housing that at least partially bounds an ionization region through which high energy electrons move from a cathode to ionize gas molecules injected into an interior of the housing; a liner section defining one or more interior walls of the housing interior, wherein each liner section includes a interiorly facing surface exposed to the ionization region during operation the ion implantation system; a cathode shield disposed about the cathode; a repeller spaced apart from the cathode; a plate including a source aperture for discharging ions from the ion source chamber; wherein at least one of the repeller, the liner section, the cathode shield; the plate, or an insert in the plate defining the source aperture comprise silicon carbide, wherein the silicon carbide is a non-stoichiometric sintered material having excess carbon.
    Type: Application
    Filed: December 20, 2013
    Publication date: June 25, 2015
    Applicant: Axcelis Technologies, Inc.
    Inventors: Neil Colvin, Tseh-Jen Hsieh
  • Publication number: 20140319994
    Abstract: An exemplary ion source for creating a stream of ions has a chamber body that at least partially bounds an ionization region of the arc chamber. The arc chamber body is used with a hot filament arc chamber housing that either directly or indirectly heats a cathode to sufficient temperature to cause electrons to stream through the ionization region of the arc chamber. Electrically insulating seal element(s) engaging an outer surface of the arc chamber body are provided for impeding material from exiting the chamber interior openings of the arc chamber body. The seal element(s) have a ceramic body that includes an outer wall that abuts the arc chamber body along a circumferential outer lip. The seal also has one or more radially inner channels bounded by one or more inner walls spaced inwardly from the outer wall. The electrically insulating seal element comprises a Boron Nitride (BN) material.
    Type: Application
    Filed: April 25, 2013
    Publication date: October 30, 2014
    Inventors: Neil K. Colvin, Tseh Jen Hsieh
  • Patent number: 8779395
    Abstract: An ion implantation system for improving performance and extending lifetime of an ion source is disclosed whereby the selection, delivery, optimization and control of the flow rate of a co-gas into an ion source chamber is automatically controlled.
    Type: Grant
    Filed: December 1, 2011
    Date of Patent: July 15, 2014
    Assignee: Axcelis Technologies, Inc.
    Inventors: Neil K. Colvin, Tseh-Jen Hsieh
  • Patent number: 8524584
    Abstract: Methods and carbon ion precursor compositions for implanting carbon ions generally includes vaporizing and ionizing a gas mixture including carbon oxide and methane gases in an ion source to create a plasma and produce carbon ions. The ionized carbon within the plasma is then extracted to form an ion beam. The ion beam is mass analyzed with a mass analyzer magnet to permit the ionized carbon to pass therethrough and implant into a workpiece.
    Type: Grant
    Filed: January 20, 2011
    Date of Patent: September 3, 2013
    Assignee: Axcelis Technologies, Inc.
    Inventors: William D. Lee, Daniel R. Tieger, Tseh-Jen Hsieh
  • Publication number: 20130140473
    Abstract: An ion implantation system for improving performance and extending lifetime of an ion source is disclosed whereby the selection, delivery, optimization and control of the flow rate of a co-gas into an ion source chamber is automatically controlled.
    Type: Application
    Filed: December 1, 2011
    Publication date: June 6, 2013
    Applicant: Axcelis Technologies, Inc.
    Inventors: Neil K. Colvin, Tseh-Jen Hsieh
  • Publication number: 20120190181
    Abstract: Methods and carbon ion precursor compositions for implanting carbon ions generally includes vaporizing and ionizing a gas mixture including carbon oxide and methane gases in an ion source to create a plasma and produce carbon ions. The ionized carbon within the plasma is then extracted to form an ion beam. The ion beam is mass analyzed with a mass analyzer magnet to permit the ionized carbon to pass therethrough and implant into a workpiece.
    Type: Application
    Filed: January 20, 2011
    Publication date: July 26, 2012
    Applicant: AXCELIS TECHNOLOGIES, INC.
    Inventors: WILLIAM D. LEE, DANIEL R. TIEGER, TSEH-JEN HSIEH
  • Publication number: 20120119113
    Abstract: An ion implantation system for improving performance and extending lifetime of an ion source is disclosed. A fluorine-containing dopant gas source is introduced into the ion chamber along with one or more co-gases. The one or more co-gases can include hydrogen or krypton. The co-gases mitigate the effects caused by free fluorine ions in the ion source chamber which lead to ion source failure.
    Type: Application
    Filed: November 17, 2010
    Publication date: May 17, 2012
    Applicant: Axcelis Technologies, Inc.
    Inventors: Neil K. Colvin, Tseh-Jen Hsieh
  • Publication number: 20120118232
    Abstract: A system, apparatus and method for increasing ion source lifetime in an ion implanter are provided. Oxidation of the ion source and ion source chamber poisoning resulting from a carbon and oxygen-containing source gas is controlled by utilizing a hydrogen co-gas, which reacts with free oxygen atoms to form hydroxide and water.
    Type: Application
    Filed: November 17, 2010
    Publication date: May 17, 2012
    Applicant: Axcelis Technologies, Inc.
    Inventors: Neil K. Colvin, Tseh-Jen Hsieh