Patents by Inventor William DiVergilio
William DiVergilio 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).
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Patent number: 9842752Abstract: A semiconductor manufacturing system or process, such as an ion implantation system, apparatus and method, including a component or step for heating a semiconductor workpiece are provided. An optical heat source emits light energy to heat the workpiece. The optical heat source is configured to provide minimal or reduced emission of non-visible wavelengths of light energy and emit light energy at a wavelength in a maximum energy light absorption range of the workpiece.Type: GrantFiled: June 21, 2013Date of Patent: December 12, 2017Assignee: Axcelis Technologies, Inc.Inventors: David Bernhardt, W. Davis Lee, William DiVergilio, Marvin Farley
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Patent number: 9653253Abstract: A plasma-based material modification system for material modification of a work piece may include a plasma source chamber coupled to a process chamber. A support structure, configured to support the work piece, may be disposed within the process chamber. The plasma source chamber may include a first plurality of magnets, a second plurality of magnets, and a third plurality of magnets that surround a plasma generation region within the plasma source chamber. The plasma source chamber may be configured to generate a plasma having ions within the plasma generation region. The third plurality of magnets may be configured to confine a majority of electrons of the plasma having energy greater than 10 eV within the plasma generation region while allowing ions from the plasma to pass through the third plurality of magnets into the process chamber for material modification of the work piece.Type: GrantFiled: March 7, 2014Date of Patent: May 16, 2017Assignee: ADVANCED ION BEAM TECHNOLOGY, INC.Inventors: William Divergilio, Stephen Savas, Susan Felch, Tienyu Sheng, Hao Chen
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Publication number: 20160175804Abstract: Systems and methods for the production of laser induced high mass molecular borane is disclosed for an ion implantation system. The system comprises a laser, a diborane gas source, a heated interaction chamber for generating a high mass molecular borane, a transport system for transferring the high mass molecular borane, and an ion source chamber for generating an ion beam in an ion beam path for implantation of a workpiece. The transport system comprises at least a first and a second flow control component at least a first heated chamber, wherein the first heated chamber is disposed between the first and second flow control components, and wherein the first heated chamber is configured to condense the high mass molecular borane. The laser comprises a CO2 laser configured to irradiate the diborane source gas at a wavelength of about 10.6 ?m at a R-16 (973 cm?1) line of excitation.Type: ApplicationFiled: December 19, 2014Publication date: June 23, 2016Inventors: William Davis Lee, William DiVergilio, Daniel R. Tieger
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Publication number: 20150255242Abstract: A plasma-based material modification system for material modification of a work piece may include a plasma source chamber coupled to a process chamber. A support structure, configured to support the work piece, may be disposed within the process chamber. The plasma source chamber may include a first plurality of magnets, a second plurality of magnets, and a third plurality of magnets that surround a plasma generation region within the plasma source chamber. The plasma source chamber may be configured to generate a plasma having ions within the plasma generation region. The third plurality of magnets may be configured to confine a majority of electrons of the plasma having energy greater than 10 eV within the plasma generation region while allowing ions from the plasma to pass through the third plurality of magnets into the process chamber for material modification of the work piece.Type: ApplicationFiled: March 7, 2014Publication date: September 10, 2015Applicant: ADVANCED ION BEAM TECHNOLOGY, INC.Inventors: William DIVERGILIO, Stephen SAVAS, Susan FELCH, Tienyu SHENG, Hao CHEN
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Publication number: 20150037983Abstract: A semiconductor manufacturing system or process, such as an ion implantation system, apparatus and method, including a component or step for heating a semiconductor workpiece are provided. An optical heat source emits light energy to heat the workpiece. The optical heat source is configured to provide minimal or reduced emission of non-visible wavelengths of light energy and emit light energy at a wavelength in a maximum energy light absorption range of the workpiece.Type: ApplicationFiled: June 21, 2013Publication date: February 5, 2015Inventors: David Bernhardt, W. Davis Lee, William DiVergilio, Marvin Farley
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Patent number: 8760054Abstract: A method and apparatus is provided for generating a plasma electron flood using microwave radiation. In one embodiment, a microwave PEF apparatus is configured to generate a magnetic field that rapidly decays over a PEF cavity, resulting in a static magnetic field having a high magnetic field strength near one side (e.g., “bottom”) of the PEF cavity and a low magnetic field strength (e.g., substantially zero) near the opposite side (e.g., “top”) of the PEF comprising an elongated extraction slit. In one particular embodiment, the one or more permanent magnets are located at a position that is spatially opposed to the location of the elongated extraction slit to achieve the rapidly decaying magnetic field. The magnetic field results in an electron cyclotron frequency in a region of the cavity equal to or approximately equal to a microwave radiation frequency so that plasma is generated to diffuse through the extraction apertures.Type: GrantFiled: January 21, 2011Date of Patent: June 24, 2014Assignee: Axcelis Technologies Inc.Inventors: William DiVergilio, Bo Vanderberg
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Patent number: 8692215Abstract: A workpiece scanning system is provided having a scan arm that rotates about a first axis and a chilled end effector rotatably coupled to the scan arm about a second axis for selectively securing a workpiece. The chilled end effector has a clamping plate and one or more cooling mechanisms for cooling the clamping plate. A bearing is positioned along the second axis and rotatably couples the end effector to the scan arm, and a seal is positioned along the second axis to provide a pressure barrier between an external environment and an internal environment. One or more of the bearing and seal can have a ferrofluid associated therewith. A heater assembly is positioned proximate to the bearing and seal, wherein the heater assembly selectively provides a predetermined amount of heat to the bearing and seal, therein increasing a propensity of the end effector to rotate about the second axis.Type: GrantFiled: May 26, 2011Date of Patent: April 8, 2014Assignee: Axcelis Technologies, Inc.Inventors: William D. Lee, William DiVergilio, Steve Drummond
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Patent number: 8089052Abstract: An ion implanter system including an ion source for use in creating a stream or beam of ions. The ion source has an ion source chamber housing that at least partially bounds an ionization region for creating a high density concentration of ions within the chamber housing. An ion extraction aperture of desired characteristics covers an ionization region of the chamber. In one embodiment, a movable ion extraction aperture plate is moved with respect to the housing for modifying an ion beam profile. One embodiment includes an aperture plate having at least elongated apertures and is moved between at least first and second positions that define different ion beam profiles. A drive or actuator coupled to the aperture plate moves the aperture plate between the first and second positions. An alternate embodiment has two moving plate portions that bound an adjustable aperture.Type: GrantFiled: April 14, 2009Date of Patent: January 3, 2012Assignee: Axcelis Technologies, Inc.Inventors: Daniel Tieger, William DiVergilio, Edward Eisner, Michael Graf
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Publication number: 20110291023Abstract: A workpiece scanning system is provided having a scan arm that rotates about a first axis and a chilled end effector rotatably coupled to the scan arm about a second axis for selectively securing a workpiece. The chilled end effector has a clamping plate and one or more cooling mechanisms for cooling the clamping plate. A bearing is positioned along the second axis and rotatably couples the end effector to the scan arm, and a seal is positioned along the second axis to provide a pressure barrier between an external environment and an internal environment. One or more of the bearing and seal can have a ferrofluid associated therewith. A heater assembly is positioned proximate to the bearing and seal, wherein the heater assembly selectively provides a predetermined amount of heat to the bearing and seal, therein increasing a propensity of the end effector to rotate about the second axis.Type: ApplicationFiled: May 26, 2011Publication date: December 1, 2011Applicant: Axcelis Technologies, Inc.Inventors: William D. Lee, William DiVergilio, Steve Drummond
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Publication number: 20110291022Abstract: An ion implantation system, method, and apparatus for abating condensation in a cold ion implant is provided. An ion implantation apparatus is configured to provide ions to a workpiece positioned in a process chamber. A sub-ambient temperature chuck supports the workpiece during an exposure of the workpiece to the plurality of ions. The sub-ambient temperature chuck is further configured to cool the workpiece to a processing temperature, wherein the process temperature is below a dew point of an external environment. A load lock chamber isolates a process environment of the process chamber from the external environment. A light source provides a predetermined wavelength of electromagnetic radiation to the workpiece concurrent with the workpiece residing within the load lock chamber, wherein the predetermined wavelength or range of wavelengths is associated with a maximum radiant energy absorption range of the workpiece, wherein the light source is configured to selectively heat the workpiece.Type: ApplicationFiled: November 11, 2010Publication date: December 1, 2011Applicant: Axcelis Technologies, Inc.Inventors: William D. Lee, Marvin Farley, William DiVergilio
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Publication number: 20090266997Abstract: An ion implanter system including an ion source for use in creating a stream or beam of ions. The ion source has an ion source chamber housing that at least partially bounds an ionization region for creating a high density concentration of ions within the chamber housing. An ion extraction aperture of desired characteristics covers an ionization region of the chamber. In one embodiment, a movable ion extraction aperture plate is moved with respect to the housing for modifying an ion beam profile. One embodiment includes an aperture plate having at least elongated apertures and is moved between at least first and second positions that define different ion beam profiles. A drive or actuator coupled to the aperture plate moves the aperture plate between the first and second positions. An alternate embodiment has two moving plate portions that bound an adjustable aperture.Type: ApplicationFiled: April 14, 2009Publication date: October 29, 2009Applicant: Axcelis Technologies, Inc.Inventors: Daniel Tieger, William DiVergilio, Edward Eisner, Michael Graf
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Patent number: 7453074Abstract: An ion implanter includes an ion source for generating an ion beam moving along a beam line and a vacuum or implantation chamber wherein a workpiece, such as a silicon wafer is positioned to intersect the ion beam for ion implantation of a surface of the workpiece by the ion beam. An ion source includes a ionization chamber and an ionization chamber electrode defining an ionization chamber aperture, wherein the ionization chamber electrode includes a raised portion for generating substantially uniform electric fields in the region adjacent the ionization chamber electrode.Type: GrantFiled: December 6, 2005Date of Patent: November 18, 2008Assignee: Axcelis Technologies, Inc.Inventors: Edward C. Eisner, William DiVergilio
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Publication number: 20070125965Abstract: An ion implanter includes an ion source for generating an ion beam moving along a beam line and a vacuum or implantation chamber wherein a workpiece, such as a silicon wafer is positioned to intersect the ion beam for ion implantation of a surface of the workpiece by the ion beam. An ion source includes a ionization chamber and an ionization chamber electrode defining an ionization chamber aperture, wherein the ionization chamber electrode includes a raised portion for generating substantially uniform electric fields in the region adjacent the ionization chamber electrode.Type: ApplicationFiled: December 6, 2005Publication date: June 7, 2007Applicant: Axcelis Technologies, Inc.Inventors: Edward Eisner, William DiVergilio
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Publication number: 20070044717Abstract: An ion shower system is disclosed and comprises a plasma source operable to generate source gas ions within a chamber. The plasma source further comprises a plurality of conductor segments and a plurality of capacitors, wherein the conductor segments are serially connected through the plurality of capacitors. The plasma source further comprises an antenna drive circuit coupled to the plurality of conductor segments that provides power to the conductor segments and capacitors at a predetermined frequency. The ion shower system also comprises a source gas inlet that provides a source gas to the chamber. The conductor segments, capacitors and antenna drive circuit cooperatively provide energy to charged particles in the chamber, thereby energizing the charged particles and generating a plasma comprising source gas ions and electrons within the chamber due to ionizing collisions between the energized charged particles and the source gas.Type: ApplicationFiled: October 6, 2006Publication date: March 1, 2007Inventors: William DiVergilio, Victor Benveniste, Peter Kellerman
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Publication number: 20060145096Abstract: Methods are provided for calibrating an ion beam scanner in an ion implantation system, comprising measuring a plurality of initial current density values at a plurality of locations along a scan direction, where the values individually correspond to one of a plurality of initial voltage scan intervals and one of a corresponding plurality of initial scan time values, creating a system of linear equations based on the measured initial current density values and the initial voltage scan intervals, and determining a set of scan time values that correspond to a solution to the system of linear equations that reduces current density profile deviations. A calibration system is provided for calibrating an ion beam scanner in an ion implantation system, comprising a dosimetry system and a control system.Type: ApplicationFiled: January 4, 2005Publication date: July 6, 2006Inventors: Victor Benveniste, Peter Kellerman, William DiVergilio
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Publication number: 20050098117Abstract: An ion shower system is disclosed and comprises a plasma source operable to generate source gas ions within a chamber. The plasma source further comprises a plurality of conductor segments and a plurality of capacitors, wherein the conductor segments are serially connected through the plurality of capacitors. The plasma source further comprises an antenna drive circuit coupled to the plurality of conductor segments that provides power to the conductor segments and capacitors at a predetermined frequency. The ion shower system also comprises a source gas inlet that provides a source gas to the chamber. The conductor segments, capacitors and antenna drive circuit cooperatively provide energy to charged particles in the chamber, thereby energizing the charged particles and generating a plasma comprising source gas ions and electrons within the chamber due to ionizing collisions between the energized charged particles and the source gas.Type: ApplicationFiled: November 6, 2003Publication date: May 12, 2005Inventors: William DiVergilio, Victor Benveniste, Peter Kellerman
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Publication number: 20050052817Abstract: The present invention is directed to a method for clamping a wafer to an electrostatic chuck using a single-phase square wave AC clamping voltage. The method comprises determining a single-phase square wave clamping voltage for the electrostatic chuck, wherein the determination is based, at least in part, on an inertial response time of the wafer. The wafer is placed on the electrostatic chuck, wherein a gap between the electrostatic chuck and the wafer is defined. The determined single-phase square wave clamping voltage is then applied, wherein the wafer is generally clamped to the electrostatic chuck within a predetermined distance, while an amount of electrostatic charge is generally not allowed to accumulate, thereby enabling a fast de-clamping of the wafer.Type: ApplicationFiled: September 8, 2003Publication date: March 10, 2005Inventors: Peter Kellerman, Shu Qin, William DiVergilio
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Publication number: 20050045835Abstract: The present invention mitigates loss of beam current, particularly for low energy ion beam transport. The present invention employs unipolar electrostatic quadrupole lenses instead of conventional dual positive and negative potential (bipolar) quadrupole lenses as beam focusing elements within a linear accelerator, reducing beam current losses therein. In addition, the present invention also includes systems and methods for switching between bipolar wiring and unipolar wiring.Type: ApplicationFiled: September 3, 2003Publication date: March 3, 2005Inventors: William DiVergilio, Youngzhang Huang