Patents by Inventor David Charles Smith

David Charles Smith 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: 10100407
    Abstract: The present inventors have conceived of a multi-stage process gas delivery system for use in a substrate processing apparatus. In certain implementations, a first process gas may first be delivered to a substrate in a substrate processing chamber. A second process gas may be delivered, at a later time, to the substrate to aid in the even dosing of the substrate. Delivery of the first process gas and the second process gas may cease at the same time or may cease at separate times.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: October 16, 2018
    Assignee: Lam Research Corporation
    Inventors: Purushottam Kumar, Hu Kang, Adrien LaVoie, Yi Chung Chiu, Frank L. Pasquale, Jun Qian, Chloe Baldasseroni, Shankar Swaminathan, Karl F. Leeser, David Charles Smith, Wei-Chih Lai
  • Publication number: 20180269058
    Abstract: Methods and apparatuses for selectively depositing silicon nitride on silicon surfaces relative to silicon oxide surfaces and selectively depositing silicon nitride on silicon oxide surfaces relative to silicon surfaces are provided herein. Methods involve blocking one surface while leaving another surface unblocked and selectively depositing silicon nitride on the unblocked surface. The blocked surface may include an organic moiety having an Si—C bond. The method may include blocking one of an exposed hydroxyl-terminated silicon-containing surface and an exposed hydrogen-terminated silicon-containing surface of the substrate. Apparatuses include a process chamber having a pedestal, an outlet, and a controller for providing instructions for causing delivery of a semiconductor substrate to the pedestal, causing introduction of a silicon-containing precursor and causing introduction of a nitrogen-containing reactant without igniting a plasma.
    Type: Application
    Filed: January 23, 2018
    Publication date: September 20, 2018
    Inventors: David Charles Smith, Dennis M. Hausmann
  • Publication number: 20180261447
    Abstract: It will be understood that in some embodiments, nitrogen-containing ligands bonded to the silicon may not necessarily be identical to another nitrogen-containing ligand bonded to the same silicon atom. For example, in some embodiments, R1 and R2 may be different alkyl ligands. In some embodiments, a first NR1R2 ligand attached to a silicon atom may not be the same as or have the same alkyl ligands as another NR1R2 ligand attached to the same silicon atom. As noted above, R1 and R2 may be any alkyl ligand.
    Type: Application
    Filed: March 8, 2017
    Publication date: September 13, 2018
    Inventors: David Charles Smith, Dennis M. Hausmann
  • Publication number: 20180261448
    Abstract: Methods and apparatuses for selectively depositing silicon-containing dielectric or metal-containing dielectric material on silicon or metal surfaces selective to silicon oxide or silicon nitride materials are provided herein. Methods involve exposing the substrate to an acyl chloride which is reactive with the silicon oxide or silicon nitride material where deposition is not desired to form a ketone structure that blocks deposition on the silicon oxide or silicon nitride material. Exposure to the acyl chloride is performed prior to deposition of the desired silicon-containing dielectric material or metal-containing dielectric material.
    Type: Application
    Filed: May 9, 2018
    Publication date: September 13, 2018
    Inventors: David Charles Smith, Dennis M. Hausmann
  • Publication number: 20180233349
    Abstract: Methods and apparatuses for selectively depositing silicon oxide on a silicon oxide surface relative to a silicon nitride surface are described herein. Methods involve pre-treating a substrate surface using ammonia and/or nitrogen plasma and selectively depositing silicon oxide on a silicon oxide surface using alternating pulses of an aminosilane silicon precursor and an oxidizing agent in a thermal atomic layer deposition reaction without depositing silicon oxide on an exposed silicon nitride surface.
    Type: Application
    Filed: February 14, 2017
    Publication date: August 16, 2018
    Inventors: David Charles Smith, Dennis M. Hausmann
  • Patent number: 10043656
    Abstract: Methods and apparatuses for selectively depositing silicon-containing dielectric or metal-containing dielectric material on silicon or metal surfaces selective to silicon oxide or silicon nitride materials are provided herein. Methods involve exposing the substrate to an acyl chloride which is reactive with the silicon oxide or silicon nitride material where deposition is not desired to form a ketone structure that blocks deposition on the silicon oxide or silicon nitride material. Exposure to the acyl chloride is performed prior to deposition of the desired silicon-containing dielectric material or metal-containing dielectric material.
    Type: Grant
    Filed: March 10, 2017
    Date of Patent: August 7, 2018
    Assignee: Lam Research Corporation
    Inventors: David Charles Smith, Dennis M. Hausmann
  • Publication number: 20180108529
    Abstract: Efficient integrated sequential deposition of alternating layers of dielectric and conductor, for example oxide/metal or metal nitride, e.g., SiO2/TiN, in a single tool, and even in a single process chamber enhances throughput without compromising quality when directly depositing a OMOM stack with many layers. Conductor and dielectric film deposition of a stack of at least 20 conductor/dielectric film pairs in the same processing tool or chamber, without breaking vacuum between the film depositions, such that there is no substantial cross-contamination between the conductor and dielectric film depositions, can be achieved.
    Type: Application
    Filed: May 11, 2017
    Publication date: April 19, 2018
    Inventors: William T. Lee, Bart J. van Schravendijk, David Charles Smith, Michal Danek, Patrick A. Van Cleemput, Ramesh Chandrasekharan
  • Patent number: 9911595
    Abstract: Methods and apparatuses for selectively depositing silicon nitride on silicon surfaces relative to silicon oxide surfaces and selectively depositing silicon nitride on silicon oxide surfaces relative to silicon surfaces are provided herein. Methods involve exposing the substrate to an alkene which is selectively reactive with the silicon surface to block the silicon surface by forming an organic moiety on the silicon surface prior to depositing silicon nitride selectively on silicon oxide surfaces using thermal atomic layer deposition. Methods involve exposing the substrate to an alkylsilylhalide which is selectively reactive with the silicon oxide surface to block the silicon oxide surface by forming an organic moiety on the silicon oxide surface prior to depositing silicon nitride selectively on silicon surfaces using thermal atomic layer deposition.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: March 6, 2018
    Assignee: Lam Research Corporation
    Inventors: David Charles Smith, Dennis M. Hausmann
  • Publication number: 20180012759
    Abstract: Thin tin oxide films are used as spacers in semiconductor device manufacturing. In one implementation, thin tin oxide film is conformally deposited onto a semiconductor substrate having an exposed layer of a first material (e.g., silicon oxide or silicon nitride) and a plurality of protruding features comprising a second material (e.g., silicon or carbon). For example, 10-100 nm thick tin oxide layer can be deposited using atomic layer deposition. Next, tin oxide film is removed from horizontal surfaces, without being completely removed from the sidewalls of the protruding features. Next, the material of protruding features is etched away, leaving tin oxide spacers on the substrate. This is followed by etching the unprotected portions of the first material, without removal of the spacers. Next, underlying layer is etched, and spacers are removed. Tin-containing particles can be removed from processing chambers by converting them to volatile tin hydride.
    Type: Application
    Filed: September 22, 2017
    Publication date: January 11, 2018
    Inventors: David Charles Smith, Richard Wise, Arpan Mahorowala, Patrick A. Van Cleemput, Bart J. van Schravendijk
  • Patent number: 9824893
    Abstract: Thin tin oxide films are used as spacers in semiconductor device manufacturing. In one implementation, thin tin oxide film is conformally deposited onto a semiconductor substrate having an exposed layer of a first material (e.g., silicon oxide or silicon nitride) and a plurality of protruding features comprising a second material (e.g., silicon or carbon). For example, 10-100 nm thick tin oxide layer can be deposited using atomic layer deposition. Next, tin oxide film is removed from horizontal surfaces, without being completely removed from the sidewalls of the protruding features. Next, the material of protruding features is etched away, leaving tin oxide spacers on the substrate. This is followed by etching the unprotected portions of the first material, without removal of the spacers. Next, underlying layer is etched, and spacers are removed. Tin-containing particles can be removed from processing chambers by converting them to volatile tin hydride.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: November 21, 2017
    Assignee: Lam Research Corporation
    Inventors: David Charles Smith, Richard Wise, Arpan Mahorowala, Patrick A. Van Cleemput, Bart J. van Schravendijk
  • Patent number: 9624578
    Abstract: Methods for depositing film on substrates are provided. In these embodiments, the substrates are processed in batches. Due to changing conditions within a reaction chamber as additional substrates in the batch are processed, various film properties may trend over the course of a batch. The methods herein can be used to address the trending of film properties over the course of a batch. More specifically, film property trending is minimized by changing the amount of RF power used to process substrates over the course of the batch. Such methods are sometimes referred to as RF compensation methods.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: April 18, 2017
    Assignee: Lam Research Corporation
    Inventors: Jun Qian, Frank L. Pasquale, Adrien LaVoie, Chloe Baldasseroni, Hu Kang, Shankar Swaminathan, Purushottam Kumar, Paul Franzen, Trung T. Le, Tuan Nguyen, Jennifer Petraglia, David Charles Smith, Seshasayee Varadarajan
  • Publication number: 20160177443
    Abstract: The present inventors have conceived of a multi-stage process gas delivery system for use in a substrate processing apparatus. In certain implementations, a first process gas may first be delivered to a substrate in a substrate processing chamber. A second process gas may be delivered, at a later time, to the substrate to aid in the even dosing of the substrate. Delivery of the first process gas and the second process gas may cease at the same time or may cease at separate times.
    Type: Application
    Filed: December 19, 2014
    Publication date: June 23, 2016
    Inventors: Purushottam Kumar, Hu Kang, Adrien LaVoie, Yi Chung Chiu, Frank L. Pasquale, Jun Qian, Chloe Baldasseroni, Shankar Swaminathan, Karl F. Leeser, David Charles Smith, Wei-Chih Lai
  • Publication number: 20160090650
    Abstract: The embodiments herein relate to methods, apparatus, and systems for depositing film on substrates. In these embodiments, the substrates are processed in batches. Due to changing conditions within a reaction chamber as additional substrates in the batch are processed, various film properties may trend over the course of a batch. Disclosed herein are methods and apparatus for minimizing the trending of film properties over the course of a batch. More specifically, film property trending is minimized by changing the amount of RF power used to process substrates over the course of the batch. Such methods are sometimes referred to as RF compensation methods.
    Type: Application
    Filed: September 30, 2014
    Publication date: March 31, 2016
    Inventors: Jun Qian, Frank L. Pasquale, Adrien LaVoie, Chloe Baldasseroni, Hu Kang, Shankar Swaminathan, Purushottam Kumar, Paul Franzen, Trung T. Le, Tuan Nguyen, Jennifer Petraglia, David Charles Smith, Seshasayee Varadarajan
  • Patent number: 8811812
    Abstract: A camera rig system is configured to film in several overlapping directions at once. The camera rig system has a front rig having a first plurality of cameras arranged to film in a first set of overlapping directions. A trigger box is electrically coupled to the front rig and configured to receive data from the first plurality of cameras. A rear rig having a second plurality of cameras is electrically coupled to the trigger box and arranged to film in a second set of overlapping directions. The first set of overlapping directions and the second set of overlapping directions are configured such that images taken from the first plurality of cameras and the second plurality of cameras can reflect background images around the camera rig system.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: August 19, 2014
    Inventors: Michael Shawn Lawler, David Charles Smith
  • Patent number: 7457756
    Abstract: A method of generating a time-frequency representation of a signal that preserves phase information by receiving the signal, calculating a joint time-frequency domain of the signal, estimating instantaneous frequencies of the joint time-frequency domain, modifying each estimated instantaneous frequency, if necessary, to correspond to a frequency of the joint time-frequency domain to which it most closely compares, redistributing the elements within the joint time-frequency domain according to the estimated instantaneous frequencies as modified, computing a magnitude for each element in the joint time-frequency domain as redistributed, and plotting the results as the time-frequency representation of the signal.
    Type: Grant
    Filed: June 9, 2005
    Date of Patent: November 25, 2008
    Assignee: The United States of America as represented by the Director of the National Security Agency
    Inventors: Douglas J. Nelson, David Charles Smith