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).

  • Publication number: 20240385048
    Abstract: A method and apparatus for determining the temperature of a substrate within a processing chamber are described herein. The methods and apparatus described herein utilize an etalon assembly and a heterodyning effect to determine a first temperature of a substrate. The first temperature of the substrate is determined without physically contacting the substrate. A separate temperature sensor also measures a second temperature of the substrate and/or the substrate support at a similar location. The first temperature and the second temperature are utilized to calibrate one of the temperature sensors disposed within the substrate support, a model of the processes performed within the processing chamber, or to adjust a process parameter of the process performed within the processing chamber.
    Type: Application
    Filed: July 30, 2024
    Publication date: November 21, 2024
    Inventors: Bruce E. ADAMS, Samuel C. HOWELLS, Alvaro GARCIA, Barry P. CRAVER, Tony Jefferson GNANAPRAKASA, Lei LIAN
  • Patent number: 12078547
    Abstract: A method and apparatus for determining the temperature of a substrate within a processing chamber are described herein. The methods and apparatus described herein utilize an etalon assembly and a heterodyning effect to determine a first temperature of a substrate. The first temperature of the substrate is determined without physically contacting the substrate. A separate temperature sensor also measures a second temperature of the substrate and/or the substrate support at a similar location. The first temperature and the second temperature are utilized to calibrate one of the temperature sensors disposed within the substrate support, a model of the processes performed within the processing chamber, or to adjust a process parameter of the process performed within the processing chamber.
    Type: Grant
    Filed: September 28, 2021
    Date of Patent: September 3, 2024
    Assignee: Applied Materials, Inc.
    Inventors: Bruce E. Adams, Samuel C. Howells, Alvaro Garcia, Barry P. Craver, Tony Jefferson Gnanaprakasa, Lei Lian
  • Patent number: 11703391
    Abstract: An apparatus for processing substrates includes a continuum radiation source, a source manifold optically coupled to the continuum radiation source and comprising: a plurality of beam guides, each having a first end that optically couples the beam guide to the continuum radiation source; and a second end. The apparatus also includes a detector manifold to detect radiation originating from the source manifold and transmitted through a processing area, and one or more transmission pyrometers configured to analyze the source radiation and the transmitted radiation to determine an inferred temperature proximate the processing area.
    Type: Grant
    Filed: October 30, 2020
    Date of Patent: July 18, 2023
    Assignee: Applied Materials, Inc.
    Inventor: Samuel C. Howells
  • Publication number: 20230102821
    Abstract: A method and apparatus for determining the temperature of a substrate within a processing chamber are described herein. The methods and apparatus described herein utilize an etalon assembly and a heterodyning effect to determine a first temperature of a substrate. The first temperature of the substrate is determined without physically contacting the substrate. A separate temperature sensor also measures a second temperature of the substrate and/or the substrate support at a similar location. The first temperature and the second temperature are utilized to calibrate one of the temperature sensors disposed within the substrate support, a model of the processes performed within the processing chamber, or to adjust a process parameter of the process performed within the processing chamber.
    Type: Application
    Filed: September 28, 2021
    Publication date: March 30, 2023
    Inventors: Bruce E. ADAMS, Samuel C. HOWELLS, Alvaro GARCIA, Barry P. CRAVER, Tony Jefferson GNANAPRAKASA, Lei LIAN
  • Patent number: 11562915
    Abstract: Methods, systems, and apparatus provide for optically monitoring individual lamps of substrate processing chambers. In one aspect, the individual lamps are monitored to determine if one or more lamps are in need of replacement. A method includes using one or more camera coupled to a borescope to capture a plurality of images of one or more lamps in a substrate processing chamber. The plurality of images is analyzed to identify a change of mean light pixel intensity in an image reference region associated with each lamp. The method includes generating an alert based on the detection of the mean light pixel intensity change.
    Type: Grant
    Filed: January 24, 2022
    Date of Patent: January 24, 2023
    Assignee: Applied Materials, Inc.
    Inventors: Ji-Dih Hu, Chaitanya Anjaneyalu Prasad, Dongming Iu, Samuel C. Howells, Vilen K. Nestorov
  • Publication number: 20220353956
    Abstract: A window assembly for a thermal processing chamber applicable for thermal processing of a semiconductor substrate is provided. The window assembly includes an upper window, a lower window, and a plurality of linear reflectors disposed between the upper window and the lower window. The plurality of linear reflectors extend lengthwise parallel to each other and parallel to a plane of the window assembly. The window assembly includes a pressure control region defined between the upper window, the lower window, and side surfaces of each linear reflector.
    Type: Application
    Filed: April 26, 2022
    Publication date: November 3, 2022
    Inventors: Christopher S. OLSEN, Tobin KAUFMAN-OSBORN, Samuel C. HOWELLS
  • Publication number: 20220301904
    Abstract: Methods, systems, and apparatus provide for optically monitoring individual lamps of substrate processing chambers. In one aspect, the individual lamps are monitored to determine if one or more lamps are in need of replacement. A method includes using one or more camera coupled to a borescope to capture a plurality of images of one or more lamps in a substrate processing chamber. The plurality of images is analyzed to identify a change of mean light pixel intensity in an image reference region associated with each lamp. The method includes generating an alert based on the detection of the mean light pixel intensity change.
    Type: Application
    Filed: January 24, 2022
    Publication date: September 22, 2022
    Inventors: Ji-Dih HU, Chaitanya Anjaneyalu PRASAD, Dongming IU, Samuel C. HOWELLS, Vilen K. NESTOROV
  • Publication number: 20220093428
    Abstract: Semiconductor processing systems are described to measure levels of atomic oxygen using an atomic oxygen sensor positioned within a substrate processing region of a substrate processing chamber. The processing systems may include a semiconductor chamber that has a chamber body which defines a substrate processing region. The processing chamber may also include a substrate support positioned within the substrate processing region. The atomic oxygen sensor may be positioned proximate to the substrate support in the substrate processing region of the chamber. Also described are semiconductor processing methods that include detecting a concentration of atomic oxygen in the substrate processing region with an atomic oxygen sensor positioned in the semiconductor processing chamber. The atomic oxygen sensor may include at least one electrode comprising a material selectively permeable to atomic oxygen over molecular oxygen, and may further include a solid electrolyte that selectively conducts atomic oxygen ions.
    Type: Application
    Filed: September 21, 2020
    Publication date: March 24, 2022
    Applicant: Applied Materials, Inc.
    Inventors: Bruce E. Adams, Samuel C. Howells, Martin A. Hilkene, Jose Antonio Marin
  • Patent number: 11280686
    Abstract: A method includes exposing a sample etalon-object to sample incident radiation, resulting in a sample transmitted radiation and sample reflected radiation; exposing a reference etalon-object to reference incident radiation, resulting in a reference transmitted radiation and reference reflected radiation; and analyzing resultant radiation for a heterodyned spectrum. The sample transmitted radiation may become the reference incident radiation, and the reference transmitted radiation may become the resultant radiation. The reference transmitted radiation may become the sample incident radiation, and the sample transmitted radiation may become the resultant radiation. The sample transmitted radiation may become the reference incident radiation, and the reference reflected radiation may become the resultant radiation. The reference transmitted radiation may become the sample incident radiation, and the sample reflected radiation may become the resultant radiation.
    Type: Grant
    Filed: July 17, 2019
    Date of Patent: March 22, 2022
    Assignee: Applied Materials, Inc.
    Inventors: Samuel C. Howells, Bruce E. Adams
  • Patent number: 10948353
    Abstract: Examples described herein generally relate to apparatus and methods for rapid thermal processing (RTP) of a substrate. In one or more embodiments, a process chamber includes chamber body, a window disposed on a first portion of the chamber body, a chamber bottom, and a shield disposed on a second portion of the chamber body. The shield has a flat surface facing the window to reduce reflected radiant energy to a back side of a substrate disposed in the process chamber during operation. The process chamber further includes an edge support for supporting the substrate and a cooling member disposed on the chamber bottom. The cooling member is disposed in proximity of the edge support to cool the edge support during low temperature operation in order to improve the temperature uniformity of the substrate.
    Type: Grant
    Filed: January 14, 2020
    Date of Patent: March 16, 2021
    Assignee: Applied Materials, Inc.
    Inventors: Lara Hawrylchak, Samuel C. Howells, Wolfgang R. Aderhold, Leonid M. Tertitski, Michael Liu, Dongming Iu, Norman L. Tam, Ji-Dih Hu
  • Publication number: 20210055165
    Abstract: An apparatus for processing substrates includes a continuum radiation source, a source manifold optically coupled to the continuum radiation source and comprising: a plurality of beam guides, each having a first end that optically couples the beam guide to the continuum radiation source; and a second end. The apparatus also includes a detector manifold to detect radiation originating from the source manifold and transmitted through a processing area, and one or more transmission pyrometers configured to analyze the source radiation and the transmitted radiation to determine an inferred temperature proximate the processing area.
    Type: Application
    Filed: October 30, 2020
    Publication date: February 25, 2021
    Inventor: Samuel C. HOWELLS
  • Patent number: 10845249
    Abstract: An apparatus for processing substrates includes a continuum radiation source, a source manifold optically coupled to the continuum radiation source and comprising: a plurality of beam guides, each having a first end that optically couples the beam guide to the continuum radiation source; and a second end. The apparatus also includes a detector manifold to detect radiation originating from the source manifold and transmitted through a processing area, and one or more transmission pyrometers configured to analyze the source radiation and the transmitted radiation to determine an inferred temperature proximate the processing area.
    Type: Grant
    Filed: May 25, 2018
    Date of Patent: November 24, 2020
    Assignee: Applied Materials, Inc.
    Inventor: Samuel C. Howells
  • Publication number: 20200149968
    Abstract: Examples described herein generally relate to apparatus and methods for rapid thermal processing (RTP) of a substrate. In one or more embodiments, a process chamber includes chamber body, a window disposed on a first portion of the chamber body, a chamber bottom, and a shield disposed on a second portion of the chamber body. The shield has a flat surface facing the window to reduce reflected radiant energy to a back side of a substrate disposed in the process chamber during operation. The process chamber further includes an edge support for supporting the substrate and a cooling member disposed on the chamber bottom. The cooling member is disposed in proximity of the edge support to cool the edge support during low temperature operation in order to improve the temperature uniformity of the substrate.
    Type: Application
    Filed: January 14, 2020
    Publication date: May 14, 2020
    Inventors: Lara HAWRYLCHAK, Samuel C. HOWELLS, Wolfgang R. ADERHOLD, Leonid M. TERTITSKI, Michael LIU, Dongming IU, Norman L. TAM, Ji-Dih HU
  • Patent number: 10571337
    Abstract: Examples described herein generally relate to apparatus and methods for rapid thermal processing (RTP) of a substrate. In one example, a process chamber includes chamber body, a window disposed on a first portion of the chamber body, a chamber bottom, and a shield disposed on a second portion of the chamber body. The shield has a flat surface facing the window to reduce reflected radiant energy to a back side of a substrate disposed in the process chamber during operation. The process chamber further includes an edge support for supporting the substrate and a cooling member disposed on the chamber bottom. The cooling member is disposed in proximity of the edge support to cool the edge support during low temperature operation in order to improve the temperature uniformity of the substrate.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: February 25, 2020
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Lara Hawrylchak, Samuel C. Howells, Wolfgang R. Aderhold, Leonid M. Tertitski, Michael Liu, Dongming Iu, Norman L. Tam, Ji-Dih Hu
  • Publication number: 20200025631
    Abstract: A method includes exposing a sample etalon-object to sample incident radiation, resulting in a sample transmitted radiation and sample reflected radiation; exposing a reference etalon-object to reference incident radiation, resulting in a reference transmitted radiation and reference reflected radiation; and analyzing resultant radiation for a heterodyned spectrum. The sample transmitted radiation may become the reference incident radiation, and the reference transmitted radiation may become the resultant radiation. The reference transmitted radiation may become the sample incident radiation, and the sample transmitted radiation may become the resultant radiation. The sample transmitted radiation may become the reference incident radiation, and the reference reflected radiation may become the resultant radiation. The reference transmitted radiation may become the sample incident radiation, and the sample reflected radiation may become the resultant radiation.
    Type: Application
    Filed: July 17, 2019
    Publication date: January 23, 2020
    Inventors: Samuel C. HOWELLS, Bruce E. ADAMS
  • Patent number: 10537965
    Abstract: Embodiments described herein relate to the rapid thermal processing of substrates. A fiber coupled laser diode array is provided in an optical system configured to generate a uniform irradiance pattern on the surface of a substrate. A plurality of individually controllable laser diodes are optically coupled via a plurality of fibers to one or more lenses. The fiber coupled laser diode array generates a Gaussian radiation profile which is defocused by the lenses to generate a uniform intensity image. In one embodiment, a field stop is disposed within the optical system.
    Type: Grant
    Filed: February 4, 2014
    Date of Patent: January 21, 2020
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Douglas E. Holmgren, Samuel C. Howells, Aaron Muir Hunter, Theodore P. Moffitt, Diwakar N. Kedlaya
  • Patent number: 10281335
    Abstract: Examples described herein generally relate to apparatus and methods for rapid thermal processing (RTP) of a substrate. The present disclosure discloses pulsed radiation sources, used to measure a broad range of low to high temperatures in the RTP chamber. In one example, two or more lasers, one of which emits pulses of radiation at 1,030 nm and one of which emits pulses of radiation at 1,080 nm, which measures temperatures below about 200° C., are used. In another example, two or more LEDs, one of which emits pulses of radiation at 1,030 nm and one of which emits pulses of radiation at 1,080 nm, are used. In yet another example, a broadband radiation source is used to emit pulses of radiation at least at 1,030 nm and 1,080 nm. These radiation sources are useful for detection of a broad range of low to high temperatures in the RTP chamber.
    Type: Grant
    Filed: July 21, 2017
    Date of Patent: May 7, 2019
    Assignee: APPLIED MATERIALS, INC.
    Inventor: Samuel C. Howells
  • Patent number: 10181409
    Abstract: 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: January 24, 2014
    Date of Patent: January 15, 2019
    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: 20180340832
    Abstract: Examples described herein generally relate to apparatus and methods for rapid thermal processing (RTP) of a substrate. In one example, a process chamber includes chamber body, a window disposed on a first portion of the chamber body, a chamber bottom, and a shield disposed on a second portion of the chamber body. The shield has a flat surface facing the window to reduce reflected radiant energy to a back side of a substrate disposed in the process chamber during operation. The process chamber further includes an edge support for supporting the substrate and a cooling member disposed on the chamber bottom. The cooling member is disposed in proximity of the edge support to cool the edge support during low temperature operation in order to improve the temperature uniformity of the substrate.
    Type: Application
    Filed: July 28, 2017
    Publication date: November 29, 2018
    Inventors: Lara HAWRYLCHAK, Samuel C. HOWELLS, Wolfgang R. ADERHOLD, Leonid M. TERTITSKI, Michael LIU, Dongming IU, Norman L. TAM, Ji-Dih HU
  • Publication number: 20180340834
    Abstract: An apparatus for processing substrates includes a continuum radiation source, a source manifold optically coupled to the continuum radiation source and comprising: a plurality of beam guides, each having a first end that optically couples the beam guide to the continuum radiation source; and a second end. The apparatus also includes a detector manifold to detect radiation originating from the source manifold and transmitted through a processing area, and one or more transmission pyrometers configured to analyze the source radiation and the transmitted radiation to determine an inferred temperature proximate the processing area.
    Type: Application
    Filed: May 25, 2018
    Publication date: November 29, 2018
    Inventor: Samuel C. HOWELLS