Patents by Inventor Joseph J. Griffiths
Joseph J. Griffiths 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: 9383732Abstract: A method and system for adaptively controlling a laser-based material processing process are provided. The system includes sensing equipment to measure a process variable or condition of at least one of a laser-based material processing system and a workpiece processed by the material processing system and to provide a corresponding measurement signal. The control system also includes a signal processor for processing the measurement signal to obtain a processed signal which initiates, at least semi-automatically, an action associated with at least one of the material processing system and the workpiece. A method and system for at least semi-automatically qualifying a laser-based material processing system which delivers laser energy to locations on or adjacent a plurality of microstructures formed on a workpiece to at least partially process the microstructures are also provided.Type: GrantFiled: December 2, 2013Date of Patent: July 5, 2016Assignee: ELECTRO SCIENTIFIC INDUSTRIES, INC.Inventors: Joseph J. Griffiths, Kurt Pelsue
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Patent number: 8847110Abstract: A laser system for processing conductive link structures includes a seed laser generating a seed laser beam. The seed laser is sliced by a modulator into a user configurable series of pulses and the pulses are optically amplified and applied to a conductive link structure. Preferably, the bandwidth of the seed laser is less than 1 nm with an IR center frequency, and the frequency of the laser light of the pulses is doubled or quadrupled prior to application to the conductive structure. Preferably, the pulses are about 1-18 nanosecond pulsewidth and are separated by 100-400 nanoseconds.Type: GrantFiled: January 27, 2012Date of Patent: September 30, 2014Assignee: Electro Scientific Industries, Inc.Inventors: Bo Gu, Joseph J. Griffiths, Joohan Lee
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Publication number: 20140094954Abstract: A method and system for adaptively controlling a laser-based material processing process are provided. The system includes sensing equipment to measure a process variable or condition of at least one of a laser-based material processing system and a workpiece processed by the material processing system and to provide a corresponding measurement signal. The control system also includes a signal processor for processing the measurement signal to obtain a processed signal which initiates, at least semi-automatically, an action associated with at least one of the material processing system and the workpiece. A method and system for at least semi-automatically qualifying a laser-based material processing system which delivers laser energy to locations on or adjacent a plurality of microstructures formed on a workpiece to at least partially process the microstructures are also provided.Type: ApplicationFiled: December 2, 2013Publication date: April 3, 2014Applicant: ELECTRO SCIENTIFIC INDUSTRIES, INC.Inventors: Joseph J. GRIFFITHS, Kurt PELSUE
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Publication number: 20130200050Abstract: The present invention relates to the field of laser processing methods and systems, and specifically, to laser processing methods and systems for laser processing multi-material devices. Systems and methods may utilize high speed deflectors to improve processing energy window and/or improve processing speed. In some embodiments, a deflector is used for non-orthogonal scanning of beam spots. In some embodiment, a deflector is used to implement non-synchronous processing of target structures.Type: ApplicationFiled: September 10, 2012Publication date: August 8, 2013Applicant: GSI GROUP CORPORATIONInventors: Jonathan S. Ehrmann, Joseph J. Griffiths, James J. Cordingley, Donald J. Svetkoff, Shepard D. Johnson, Michael Plotkin
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Patent number: 8269137Abstract: The present invention relates to the field of laser processing methods and systems, and specifically, to laser processing methods and systems for laser processing multi-material devices. Systems and methods may utilize high speed deflectors to improve processing energy window and/or improve processing speed. In some embodiments, a deflector is used for non-orthogonal scanning of beam spots. In some embodiment, a deflector is used to implement non-synchronous processing of target structures.Type: GrantFiled: September 18, 2008Date of Patent: September 18, 2012Assignee: GSI Group CorporationInventors: Jonathan S. Ehrmann, Joseph J. Griffiths, James J. Cordingley, Donald J. Svetkoff, Shepard D. Johnson, Michael Plotkin
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Publication number: 20120195331Abstract: A laser system for processing conductive link structures includes a seed laser generating a seed laser beam. The seed laser is sliced by a modulator into a user configurable series of pulses and the pulses are optically amplified and applied to a conductive link structure. Preferably, the bandwidth of the seed laser is less than 1 nm with an IR center frequency, and the frequency of the laser light of the pulses is doubled or quadrupled prior to application to the conductive structure. Preferably, the pulses are about 1-18 nanosecond pulsewidth and are separated by 100-400 nanoseconds.Type: ApplicationFiled: January 27, 2012Publication date: August 2, 2012Applicant: GSI LUMONICS CORPORATIONInventors: Bo Gu, Joseph J. Griffiths, Joohan Lee
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Patent number: 8193468Abstract: A method and system for locally processing a predetermined microstructure formed on a substrate without causing undesirable changes in electrical or physical characteristics of the substrate or other structures formed on the substrate are provided. The method includes providing information based on a model of laser pulse interactions with the predetermined microstructure, the substrate and the other structures. At least one characteristic of at least one pulse is determined based on the information. A pulsed laser beam is generated including the at least one pulse. The method further includes irradiating the at least one pulse having the at least one determined characteristic into a spot on the predetermined microstructure. The at least one determined characteristic and other characteristics of the at least one pulse are sufficient to locally process the predetermined microstructure without causing the undesirable changes.Type: GrantFiled: October 11, 2005Date of Patent: June 5, 2012Assignee: GSI Group CorporationInventors: James J. Cordingley, Joseph J. Griffiths, Donald V. Smart
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Patent number: 8106329Abstract: A laser system for processing conductive link structures includes a seed laser generating a seed laser beam. The seed laser is sliced by a modulator into a user configurable series of pulses and the pulses are optically amplified and applied to a conductive link structure. Preferably, the bandwidth of the seed laser is less than 1 nm with an IR center frequency, and the frequency of the laser light of the pulses is doubled or quadrupled prior to application to the conductive structure. Preferably, the pulses are about 1-18 second pulsewidth and are separated by 100-400 ns.Type: GrantFiled: May 15, 2008Date of Patent: January 31, 2012Assignee: GSI Group CorporationInventors: Bo Gu, Joseph J. Griffiths, Joohan Lee
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Publication number: 20110297851Abstract: In a system for severing conductive links by laser irradiation to repair electronic devices, multiple laser beams are deflected at high-speed to target selected links for processing by positioning laser spots in a two dimensional pattern during relative motion of a substrate and a beam delivery system. As link targeting flexibility is increased, selection may be required from a large number of addressable link pairs. Various embodiments advantageously use beam deflection and beam splitting to improve memory repair processing rates.Type: ApplicationFiled: June 6, 2011Publication date: December 8, 2011Applicant: GSI GROUP CORPORATIONInventors: William Lauer, Jonathan S. Ehrmann, Joseph J. Griffiths
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Publication number: 20090095722Abstract: The present invention relates to the field of laser processing methods and systems, and specifically, to laser processing methods and systems for laser processing multi-material devices. Systems and methods may utilize high speed deflectors to improve processing energy window and/or improve processing speed. In some embodiments, a deflector is used for non-orthogonal scanning of beam spots. In some embodiment, a deflector is used to implement non-synchronous processing of target structures.Type: ApplicationFiled: September 18, 2008Publication date: April 16, 2009Applicant: GSI GROUP CORPORATIONInventors: Jonathan S. Ehrmann, Joseph J. Griffiths, James J. Cordingley, Donald J. Svetkoff, Shepard D. Johnson, Michael Plotkin
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Publication number: 20090016388Abstract: A laser system for processing conductive link structures includes a seed laser generating a seed laser beam. The seed laser is sliced by a modulator into a user configurable series of pulses and the pulses are optically amplified and applied to a conductive link structure. Preferably, the bandwidth of the seed laser is less than 1 nm with an IR center frequency, and the frequency of the laser light of the pulses is doubled or quadrupled prior to application to the conductive structure. Preferably, the pulses are about 1-18 second pulsewidth and are separated by 100-400 ns.Type: ApplicationFiled: May 15, 2008Publication date: January 15, 2009Applicant: GSI LUMONICS CORPORATIONInventors: Bo Gu, Joseph J. Griffiths, Joohan Lee
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Patent number: 7394476Abstract: A method and system for locally processing a predetermined microstructure formed on a substrate without causing undesirable changes in electrical or physical characteristics of the substrate or other structures formed on the substrate are provided. The method includes providing information based on a model of laser pulse interactions with the predetermined microstructure, the substrate and the other structures. At least one characteristic of at least one pulse is determined based on the information. A pulsed laser beam is generated including the at least one pulse. The method further includes irradiating the at least one pulse having the at least one determined characteristic into a spot on the predetermined microstructure. The at least one determined characteristic and other characteristics of the at least one pulse are sufficient to locally process the predetermined microstructure without causing the undesirable changes.Type: GrantFiled: May 2, 2006Date of Patent: July 1, 2008Assignee: GSI Group CorporationInventors: James J. Cordingley, Jonathan S. Ehrmann, Joseph J. Griffiths, Shepard D. Johnson, Joohan Lee, Donald V. Smart, Donald J. Svetkoff
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Patent number: 7192846Abstract: A method and system for locally processing a predetermined microstructure formed on a substrate without causing undesirable changes in electrical or physical characteristics of the substrate or other structures formed on the substrate are provided. The method includes providing information based on a model of laser pulse interactions with the predetermined microstructure, the substrate and the other structures. At least one characteristic of at least one pulse is determined based on the information. A pulsed laser beam is generated including the at least one pulse. The method further includes irradiating the at least one pulse having the at least one determined characteristic into a spot on the predetermined microstructure. The at least one determined characteristic and other characteristics of the at least one pulse are sufficient to locally process the predetermined microstructure without causing the undesirable changes.Type: GrantFiled: May 9, 2005Date of Patent: March 20, 2007Assignee: GSI Group CorporationInventors: James J. Cordingley, Roger D. Dowd, Jonathan S. Ehrmann, Joseph J. Griffiths, Joohan Lee, Donald V. Smart, Donald J. Svetkoff
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Patent number: 7027155Abstract: A method and system for locally processing a predetermined microstructure formed on a substrate without causing undesirable changes in electrical or physical characteristics of the substrate or other structures formed on the substrate are provided. The method includes providing information based on a model of laser pulse interactions with the predetermined microstructure, the substrate and the other structures. At least one characteristic of at least one pulse is determined based on the information. A pulsed laser beam is generated including the at least one pulse. The method further includes irradiating the at least one pulse having the at least one determined characteristic into a spot on the predetermined microstructure. The at least one determined characteristic and other characteristics of the at least one pulse are sufficient to locally process the predetermined microstructure without causing the undesirable changes.Type: GrantFiled: March 27, 2002Date of Patent: April 11, 2006Assignee: GSI Lumonics CorporationInventors: James J. Cordingley, Joseph J. Griffiths, Donald V. Smart
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Patent number: 6972268Abstract: A method and system for locally processing a predetermined microstructure formed on a substrate without causing undesirable changes in electrical or physical characteristics of the substrate or other structures formed on the substrate are provided. The method includes providing information based on a model of laser pulse interactions with the predetermined microstructure, the substrate and the other structures. At least one characteristic of at least one pulse is determined based on the information. A pulsed laser beam is generated including the at least one pulse. The method further includes irradiating the at least one pulse having the at least one determined characteristic into a spot on the predetermined microstructure. The at least one determined characteristic and other characteristics of the at least one pulse are sufficient to locally process the predetermined microstructure without causing the undesirable changes.Type: GrantFiled: March 27, 2002Date of Patent: December 6, 2005Assignee: GSI Lumonics CorporationInventors: Jonathan S. Ehrmann, Joseph J. Griffiths, Donald V. Smart, Donald J. Svetkoff
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Publication number: 20020166845Abstract: A method and system for locally processing a predetermined microstructure formed on a substrate without causing undesirable changes in electrical or physical characteristics of the substrate or other structures formed on the substrate are provided. The method includes providing information based on a model of laser pulse interactions with the predetermined microstructure, the substrate and the other structures. At least one characteristic of at least one pulse is determined based on the information. A pulsed laser beam is generated including the at least one pulse. The method further includes irradiating the at least one pulse having the at least one determined characteristic into a spot on the predetermined microstructure. The at least one determined characteristic and other characteristics of the at least one pulse are sufficient to locally process the predetermined microstructure without causing the undesirable changes.Type: ApplicationFiled: March 27, 2002Publication date: November 14, 2002Inventors: James J. Cordingley, Joseph J. Griffiths, Donald V. Smart
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Publication number: 20020162973Abstract: A method and system for locally processing a predetermined microstructure formed on a substrate without causing undesirable changes in electrical or physical characteristics of the substrate or other structures formed on the substrate are provided. The method includes providing information based on a model of laser pulse interactions with the predetermined microstructure, the substrate and the other structures. At least one characteristic of at least one pulse is determined based on the information. A pulsed laser beam is generated including the at least one pulse. The method further includes irradiating the at least one pulse having the at least one determined characteristic into a spot on the predetermined microstructure. The at least one determined characteristic and other characteristics of the at least one pulse are sufficient to locally process the predetermined microstructure without causing the undesirable changes.Type: ApplicationFiled: March 27, 2002Publication date: November 7, 2002Inventors: James J. Cordingley, Roger D. Dowd, Jonathan S. Ehrmann, Joseph J. Griffiths, Joohan Lee, Donald V. Smart, Donald J. Svetkoff