Patents by Inventor Samuel C. Howells

Samuel C. Howells 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).

  • Patent number: 8970963
    Abstract: Apparatus and methods for combining beams of amplified radiation are disclosed. A beam combiner has a collimating optic positioned to receive a plurality of coherent radiation beams at a constant angle of incidence with respect to an optical axis of the collimating optic. The respective angles of incidence may also be different in some embodiments. The collimating optic has an optical property that collimates the beams. The optical property may be refractive or reflective, or a combination thereof. A collecting optic may also be provided to direct the plurality of beams to the collimating optic. The beam combiner may be used in a thermal processing apparatus to combine more than two beams of coherent amplified radiation, such as lasers, into a single beam.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: March 3, 2015
    Assignee: Applied Materials, Inc.
    Inventors: Stephen Moffatt, Douglas E. Holmgren, Samuel C. Howells, Edric Tong, Bruce E. Adams, Jiping Li, Aaron Muir Hunter
  • Patent number: 8946594
    Abstract: Embodiments of the invention provide an apparatus including a substrate support, a source of laser radiation emitting laser radiation along an optical path, and an illumination optics disposed along the optical path. The illumination optics includes a set of slow-axis and fast-axis lenses. The apparatus further includes a homogenizer disposed between of the illumination optics and the substrate support along the optical path. The homogenizer includes a first and a second micro-optic lenslet arrays of cylindrical lenses, wherein the second micro-optic lenslet array of cylindrical lenses has a relatively larger lenslet pitch than that of the first micro-optic lenslet array of cylindrical lenses, and lenslet axes of the first micro-optic lenslet array and lenslet axes of the second micro-optic lenslet array are oriented along an axis that is parallel to a fast axis of the source of laser radiation.
    Type: Grant
    Filed: October 10, 2012
    Date of Patent: February 3, 2015
    Assignee: Applied Materials, Inc.
    Inventors: Douglas E. Holmgren, Samuel C. Howells
  • Patent number: 8829392
    Abstract: The present invention generally relates to an optical system that is able to reliably deliver a uniform amount of energy across an anneal region contained on a surface of a substrate. The optical system is adapted to deliver, or project, a uniform amount of energy having a desired two-dimensional shape on a desired region on the surface of the substrate. Typically, the anneal regions may be square or rectangular in shape. Generally, the optical system and methods of the present invention are used to preferentially anneal one or more regions found within the anneal regions by delivering enough energy to cause the one or more regions to re-melt and solidify.
    Type: Grant
    Filed: February 21, 2012
    Date of Patent: September 9, 2014
    Assignee: Applied Materials, Inc.
    Inventors: Bruce E. Adams, Samuel C. Howells, Dean Jennings, Jiping Li, Timothy N. Thomas, Stephen Moffatt
  • Patent number: 8693095
    Abstract: A method and apparatus for decorrelating coherent light from a light source, such as a pulsed laser, in both time and space in an effort to provide intense and uniform illumination are provided. The techniques and apparatus described herein may be incorporated into any application where intense, uniform illumination is desired, such as pulsed laser annealing, welding, ablating, and wafer stepper illuminating.
    Type: Grant
    Filed: January 29, 2013
    Date of Patent: April 8, 2014
    Assignee: Applied Materials, Inc.
    Inventors: Dean Jennings, Timothy N. Thomas, Stephen Moffatt, Jiping Li, Bruce E. Adams, Samuel C. Howells
  • Patent number: 8569187
    Abstract: The present invention generally relates to an optical system that is able to reliably deliver a uniform amount of energy across an anneal region contained on a surface of a substrate. The optical system is adapted to deliver, or project, a uniform amount of energy having a desired two-dimensional shape on a desired region on the surface of the substrate. An energy source for the optical system is typically a plurality of lasers, which are combined to form the energy field.
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: October 29, 2013
    Assignee: Applied Materials, Inc.
    Inventors: Stephen Moffatt, Douglas E. Holmgren, Samuel C. Howells, Edric Tong, Bruce E. Adams, Jiping Li, Aaron Muir Hunter
  • Publication number: 20130163091
    Abstract: Apparatus and methods for combining beams of amplified radiation are disclosed. A beam combiner has a collimating optic positioned to receive a plurality of coherent radiation beams at a constant angle of incidence with respect to an optical axis of the collimating optic. The respective angles of incidence may also be different in some embodiments. The collimating optic has an optical property that collimates the beams. The optical property may be refractive or reflective, or a combination thereof. A collecting optic may also be provided to direct the plurality of beams to the collimating optic. The beam combiner may be used in a thermal processing apparatus to combine more than two beams of coherent amplified radiation, such as lasers, into a single beam.
    Type: Application
    Filed: December 14, 2012
    Publication date: June 27, 2013
    Inventors: STEPHEN MOFFATT, Douglas E. Holmgren, Samuel C. Howells, Edric Tong, Bruce E. Adams, Jiping Li, Aaron Muir Hunter
  • Patent number: 8432613
    Abstract: Substrate processing equipment and methods are used to improve the uniformity of illumination across an illuminated portion of a substrate by processing light with multiple optical homogenizers. The multiple optical homogenizers each include micro-lens arrays and Fourier lens. The multiple optical homogenizers are arranged so that the output numerical aperture of one of the optical homogenizers is within 5% of the input numerical aperture of another optical homogenizer.
    Type: Grant
    Filed: April 18, 2010
    Date of Patent: April 30, 2013
    Assignee: Applied Materials, Inc.
    Inventors: Dean C. Jennings, Timothy N. Thomas, Samuel C. Howells, Bruce E. Adams, Jiping Li
  • Patent number: 8363320
    Abstract: A method and apparatus for decorrelating coherent light from a light source, such as a pulsed laser, in both time and space in an effort to provide intense and uniform illumination are provided. The techniques and apparatus described herein may be incorporated into any application where intense, uniform illumination is desired, such as pulsed laser annealing, welding, ablating, and wafer stepper illuminating.
    Type: Grant
    Filed: April 27, 2011
    Date of Patent: January 29, 2013
    Assignee: Applied Materials, Inc.
    Inventors: Dean Jennings, Timothy N. Thomas, Stephen Moffatt, Jiping Li, Bruce E. Adams, Samuel C. Howells
  • Publication number: 20120329178
    Abstract: The present invention generally relates to an optical system that is able to reliably deliver a uniform amount of energy across an anneal region contained on a surface of a substrate. The optical system is adapted to deliver, or project, a uniform amount of energy having a desired two-dimensional shape on a desired region on the surface of the substrate. An energy source for the optical system is typically a plurality of lasers, which are combined to form the energy field.
    Type: Application
    Filed: July 29, 2011
    Publication date: December 27, 2012
    Applicant: APPLIED MATERIALS, INC.
    Inventors: Stephen Moffatt, Douglas E. Holmgren, Samuel C. Howells, Edric Tong, Bruce E. Adams, Jiping Li, Aaron Muir Hunter
  • Publication number: 20120325784
    Abstract: The present invention generally relates to an optical system that is able to reliably deliver a uniform amount of energy across an anneal region contained on a surface of a substrate. The optical system is adapted to deliver, or project, a uniform amount of energy having a desired two-dimensional shape on a desired region on the surface of the substrate. An energy source for the optical system is typically a plurality of lasers, which are combined to form the energy field.
    Type: Application
    Filed: July 29, 2011
    Publication date: December 27, 2012
    Applicant: APPLIED MATERIALS, INC.
    Inventors: Stephen Moffatt, Douglas E. Holmgren, Samuel C. Howells, Edric Tong, Bruce E. Adams, Jiping Li, Aaron Muir Hunter
  • Publication number: 20120148701
    Abstract: The present invention generally relates to an optical system that is able to reliably deliver a uniform amount of energy across an anneal region contained on a surface of a substrate. The optical system is adapted to deliver, or project, a uniform amount of energy having a desired two-dimensional shape on a desired region on the surface of the substrate. Typically, the anneal regions may be square or rectangular in shape. Generally, the optical system and methods of the present invention are used to preferentially anneal one or more regions found within the anneal regions by delivering enough energy to cause the one or more regions to re-melt and solidify.
    Type: Application
    Filed: February 21, 2012
    Publication date: June 14, 2012
    Applicant: APPLIED MATERIALS, INC.
    Inventors: Bruce E. Adams, Samuel C. Howells, Dean Jennings, Jiping Li, Timothy N. Thomas, Stephen Moffatt
  • Patent number: 8148663
    Abstract: The present invention generally relates to an optical system that is able to reliably deliver a uniform amount of energy across an anneal region contained on a surface of a substrate. The optical system is adapted to deliver, or project, a uniform amount of energy having a desired two-dimensional shape on a desired region on the surface of the substrate. Typically, the anneal regions may be square or rectangular in shape. Generally, the optical system and methods of the present invention are used to preferentially anneal one or more regions found within the anneal regions by delivering enough energy to cause the one or more regions to re-melt and solidify.
    Type: Grant
    Filed: July 31, 2007
    Date of Patent: April 3, 2012
    Assignee: Applied Materials, Inc.
    Inventors: Bruce E. Adams, Samuel C. Howells, Dean Jennings, Jiping Li, Timothy N. Thomas, Stephen Moffatt
  • Publication number: 20110199683
    Abstract: A method and apparatus for decorrelating coherent light from a light source, such as a pulsed laser, in both time and space in an effort to provide intense and uniform illumination are provided. The techniques and apparatus described herein may be incorporated into any application where intense, uniform illumination is desired, such as pulsed laser annealing, welding, ablating, and wafer stepper illuminating.
    Type: Application
    Filed: April 27, 2011
    Publication date: August 18, 2011
    Inventors: Dean Jennings, Timothy N. Thomas, Stephen Moffatt, Jiping Li, Bruce E. Adams, Samuel C. Howells
  • Publication number: 20100266268
    Abstract: Substrate processing equipment and methods are used to improve the uniformity of illumination across an illuminated portion of a substrate by processing light with multiple optical homogenizers. The multiple optical homogenizers each include micro-lens arrays and Fourier lens. The multiple optical homogenizers are arranged so that the output numerical aperture of one of the optical homogenizers is within 5% of the input numerical aperture of another optical homogenizer.
    Type: Application
    Filed: April 18, 2010
    Publication date: October 21, 2010
    Applicant: Applied Materials, Inc.
    Inventors: Dean C. Jennings, Timothy N. Thomas, Samuel C. Howells, Bruce E. Adams, Jiping Li
  • Patent number: 7529421
    Abstract: Methods and apparatus for correcting defects, such as rounded corners and line end shortening, in patterns formed via lithography are provided. Such defects are compensated for “post-rasterization” by manipulating the grayscale values of pixel maps.
    Type: Grant
    Filed: July 1, 2004
    Date of Patent: May 5, 2009
    Assignee: Applied Materials, Inc.
    Inventors: Robert J. Beauchaine, Thomas E. Chabreck, Samuel C. Howells, John J. Hubbard, Asher Klatchko, Peter Pirogovsky, Robin L. Teitzel
  • Publication number: 20090034072
    Abstract: A method and apparatus for decorrelating coherent light from a light source, such as a pulsed laser, in both time and space in an effort to provide intense and uniform illumination are provided. The techniques and apparatus described herein may be incorporated into any application where intense, uniform illumination is desired, such as pulsed laser annealing, welding, ablating, and wafer stepper illuminating.
    Type: Application
    Filed: July 31, 2007
    Publication date: February 5, 2009
    Inventors: Dean Jennings, Timothy N. Thomas, Stephen Moffatt, Jiping Li, Bruce E. Adams, Samuel C. Howells
  • Publication number: 20090032511
    Abstract: The present invention generally relates to an optical system that is able to reliably deliver a uniform amount of energy across an anneal region contained on a surface of a substrate. The optical system is adapted to deliver, or project, a uniform amount of energy having a desired two-dimensional shape on a desired region on the surface of the substrate. Typically, the anneal regions may be square or rectangular in shape. Generally, the optical system and methods of the present invention are used to preferentially anneal one or more regions found within the anneal regions by delivering enough energy to cause the one or more regions to re-melt and solidify.
    Type: Application
    Filed: July 31, 2007
    Publication date: February 5, 2009
    Inventors: Bruce E. Adams, Samuel C. Howells, Dean Jennings, Jiping Li, Timothy N. Thomas, Stephen Moffatt
  • Publication number: 20090034071
    Abstract: A method and apparatus for decorrelating coherent light from a light source, such as a pulsed laser, in both time and space in an effort to provide intense and uniform illumination are provided. For some embodiments employing a pulsed light source, the output pulse may be stretched relative to the input pulse width. The methods and apparatus described herein may be incorporated into any application where intense, uniform illumination is desired, such as pulsed laser annealing, welding, ablating, and wafer stepper illuminating.
    Type: Application
    Filed: July 31, 2007
    Publication date: February 5, 2009
    Inventors: DEAN JENNINGS, Timothy N. Thomas, Stephen Moffatt, Jiping Li, Bruce E. Adams, Samuel C. Howells
  • Publication number: 20090037868
    Abstract: Methods and apparatus for correcting defects, such as rounded corners and line end shortening, in patterns formed via lithography are provided. Such defects are compensated for “post-rasterization” by manipulating the grayscale values of pixel maps.
    Type: Application
    Filed: July 22, 2008
    Publication date: February 5, 2009
    Inventors: Thomas E. Chabreck, Samuel C. Howells, John J. Hubbard, Robin L. Teitzel
  • Patent number: 7407252
    Abstract: Methods and apparatus for correcting defects, such as rounded corners and line end shortening, in patterns formed via lithography are provided. Such defects are compensated for “post-rasterization” by manipulating the grayscale values of pixel maps.
    Type: Grant
    Filed: July 1, 2004
    Date of Patent: August 5, 2008
    Assignee: Applied Materials, Inc.
    Inventors: Thomas E. Chabreck, Samuel C. Howells, John J. Hubbard, Robin L. Teitzel