Patents by Inventor A. S. Chu

A. S. Chu 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: 20220155148
    Abstract: An apparatus for controlling temperature profile of a substrate within an epitaxial chamber includes a bottom center pyrometer and a bottom outer pyrometer to respectively measure temperatures at a center location and an outer location of a first surface of a susceptor of an epitaxy chamber, a top center pyrometer and a top outer pyrometer to respectively measure temperatures at a center location and an outer location of a substrate disposed on a second surface of the susceptor opposite the first surface, a first controller to receive signals, from the bottom center pyrometer and the bottom outer pyrometer, and output a feedback signal to a first heating lamp module that heats the first surface based on the measured temperatures of the first surface, and a second controller to receive signals, from the top center pyrometer, the top outer pyrometer, the bottom center pyrometer, and the bottom outer pyrometer, and output a feedback signal to a second heating lamp module that heats the substrate based on the mea
    Type: Application
    Filed: June 29, 2020
    Publication date: May 19, 2022
    Inventors: Zuoming ZHU, Shu-Kwan LAU, Enle CHOO, Ala MORADIAN, Flora Fong-Song CHANG, Maxim D. SHAPOSHNIKOV, Bindusagar MARATH SANKARATHODI, Zhepeng CONG, Zhiyuan YE, Vilen K. NESTOROV, Surendra Singh SRIVASTAVA, Saurabh CHOPRA, Patricia M. LIU, Errol Antonio C. SANCHEZ, Jenny C. LIN, Schubert S. CHU
  • Publication number: 20220157604
    Abstract: Aspects of the present disclosure relate to apparatus, systems, and methods of using atomic hydrogen radicals with epitaxial deposition. In one aspect, nodular defects (e.g., nodules) are removed from epitaxial layers of substrate. In one implementation, a method of processing substrates includes selectively growing an epitaxial layer on one or more crystalline surfaces of a substrate. The epitaxial layer includes silicon. The method also includes etching the substrate to remove a plurality of nodules from one or more non-crystalline surfaces of the substrate. The etching includes exposing the substrate to atomic hydrogen radicals. The method also includes thermally annealing the epitaxial layer to an anneal temperature that is 600 degrees Celsius or higher.
    Type: Application
    Filed: November 16, 2020
    Publication date: May 19, 2022
    Inventors: Chen-Ying WU, Yi-Chiau HUANG, Zhiyuan YE, Schubert S. CHU, Errol Antonio C. SANCHEZ, Brian Hayes BURROWS
  • Patent number: 11326158
    Abstract: Provided are methods and compositions for enriching cfDNA fragments from a biological fluid sample. A biological fluid sample, such as a urine sample, is collected and, in certain examples, pretreated before enrichment of the cfDNA. For the pretreatment, the sample is centrifuged to remove large cells and large cellular debris. As part of the pretreatment, the sample is also cleared of additional large cellular debris and excess volume by subjecting the sample to anion exchange chromatography and eluting bound DNA. Following any pretreatment of the sample, different concentrations an alcoholic solution are used—along with a mixture of DNA-binding particles and a chaotropic agent—to enrich the sample with cfDNA fragments having different sizes. For example, a biological sample can be enriched with small cfDNA fragments less than about 100 base pairs in length or large cfDNA fragments greater than about 100 base pairs in length.
    Type: Grant
    Filed: July 12, 2019
    Date of Patent: May 10, 2022
    Assignee: Myriad Women's Health, Inc.
    Inventors: Noah C. Welker, Clement S. Chu
  • Publication number: 20220093418
    Abstract: Embodiments of the present disclosure generally relate to methods and systems for cleaning a surface of a substrate. In an embodiment, a method of processing a substrate is provided. The method includes introducing a substrate to a processing volume of a processing chamber by positioning the substrate on a substrate support. The method further includes flowing a first process gas into the processing volume, the first process gas comprising HF, flowing a second process gas into the processing volume, the second process gas comprising pyridine, pyrrole, aniline, or a combination thereof, and exposing the substrate to the first process gas and the second process gas to remove oxide from the substrate under oxide removal conditions. In another embodiment, a system is provided that includes a processing chamber to process a substrate, and a controller to cause a processing method to be performed in the processing chamber.
    Type: Application
    Filed: September 18, 2020
    Publication date: March 24, 2022
    Inventors: Schubert S. CHU, Errol Antonio C. SANCHEZ
  • Publication number: 20220082445
    Abstract: A method and apparatus for calibration non-contact temperature sensors within a process chamber are described herein. The calibration of the non-contact temperature sensors includes the utilization of a band edge detector to determine the band edge absorption wavelength of a substrate. The band edge detector is configured to measure the intensity of a range of wavelengths and determines the actual temperature of a substrate based off the band edge absorption wavelength and the material of the substrate. The calibration method is automated and does not require human intervention or disassembly of a process chamber for each calibration.
    Type: Application
    Filed: September 15, 2020
    Publication date: March 17, 2022
    Inventors: Zhepeng CONG, Schubert S. CHU, Nyi O. MYO
  • Publication number: 20220076988
    Abstract: A susceptor for use in a processing chamber for supporting a wafer includes a susceptor substrate having a front side and a back side opposite the front side, and a coating layer deposited on the susceptor substrate. The front side has a pocket configured to hold a wafer to be processed in a processing chamber, the pocket being textured with a first pattern. The back side is textured with a second pattern.
    Type: Application
    Filed: March 4, 2021
    Publication date: March 10, 2022
    Inventors: Hui CHEN, Xinning LUAN, Kirk Allen FISHER, Shawn Joseph BONHAM, Aimee S. ERHARDT, Zhepeng CONG, Shaofeng CHEN, Schubert S. CHU, James M. AMOS, Philip Michael AMOS, John NEWMAN
  • Publication number: 20220055575
    Abstract: A two-stage brushless car wash system is disclosed. The two-stage brushless car wash system includes a first wash stage and a second wash stage that are independently controlled to wash an exterior of a vehicle. Both the first wash stage and the second wash stage account for the contour of the vehicle to enhance washing performance.
    Type: Application
    Filed: August 24, 2020
    Publication date: February 24, 2022
    Inventors: William Yoon S Chu, Jinchul Cho, Hyuntae Kim, Heon Sagong, Hyeonseop Shim
  • Publication number: 20220059342
    Abstract: Implementations of the present disclosure generally relates to a transfer chamber coupled to at least one vapor phase epitaxy chamber a plasma oxide removal chamber coupled to the transfer chamber, the plasma oxide removal chamber comprising a lid assembly with a mixing chamber and a gas distributor; a first gas inlet formed through a portion of the lid assembly and in fluid communication with the mixing chamber; a second gas inlet formed through a portion of the lid assembly and in fluid communication with the mixing chamber; a third gas inlet formed through a portion of the lid assembly and in fluid communication with the mixing chamber; and a substrate support with a substrate supporting surface; a lift member disposed in a recess of the substrate supporting surface and coupled through the substrate support to a lift actuator; and a load lock chamber coupled to the transfer chamber.
    Type: Application
    Filed: November 1, 2021
    Publication date: February 24, 2022
    Inventors: Lara HAWRYLCHAK, Schubert S. CHU, Tushar MANDREKAR, Errol C. SANCHEZ, Kin Pong LO
  • Publication number: 20220055577
    Abstract: A brushless car wash system includes a variable width. The width of the brushless car wash system is adjusted according to a width of a vehicle being washed. By adjusting the width of the brushless car wash system, wash performance of the brushless car wash system is increased.
    Type: Application
    Filed: August 24, 2020
    Publication date: February 24, 2022
    Inventors: William Yoon S Chu, Jinchul Cho, Hyuntae Kim, Heon Sagong, Hyeonseop Shim
  • Publication number: 20220055576
    Abstract: A brushless car wash system includes a wash unit that washes upper surfaces of the vehicle. The height of the wash unit is adjusted based on the contour of the upper surfaces of the vehicle. Adjusting the height of the wash unit results in increased wash performance of the brushless car wash system.
    Type: Application
    Filed: August 24, 2020
    Publication date: February 24, 2022
    Inventors: William Yoon S Chu, Jinchul Cho, Hyuntae Kim, Heon Sagong, Hyeonseop Shim
  • Publication number: 20210372126
    Abstract: A truss includes a plurality of truss members, each truss member formed from a unitary folded blank of sheet metal to create a main panel, and proximal and distal flanges and a horizontal panel each extending perpendicularly from the main panel, the proximal flange of a first truss member is connected to the distal flange of a second truss member to form a truss. In one embodiment employing trusses formed of folded sheet metal, a plurality of interconnected truss modules, each truss module including a plurality of truss members, forms a plurality of oppositely extending horizontal flanges that collectively present the top and bottom surfaces of a cantilevered canopy.
    Type: Application
    Filed: June 1, 2021
    Publication date: December 2, 2021
    Inventors: Russell Naylor, Hearee S. Chu
  • Publication number: 20210372124
    Abstract: A wall section formed from sheet metal has a main panel, opposing vertical side flanges extending rearwardly from the side edges of the main panel, top and bottom horizontal flanges extending rearwardly from the panel, and stiffening flanges extending perpendicularly from the rear edges of the side, top and bottom flanges, thereby forming load bearing side beams, a header and a sill plate, the side flanges for attachment to the those of abutting wall sections to form a wall.
    Type: Application
    Filed: June 1, 2021
    Publication date: December 2, 2021
    Inventors: Russell Naylor, Hearee S. Chu
  • Publication number: 20210366976
    Abstract: Generally, examples described herein relate to methods and processing chambers and systems for forming a stacked pixel structure using epitaxial growth processes and device structures formed thereby. In an example, a first sensor layer is epitaxially grown on a crystalline surface on a substrate. A first isolation structure is epitaxially grown on the first sensor layer. A second sensor layer is epitaxially grown on the first isolation structure. A second isolation structure is epitaxially grown on the second sensor layer. A third sensor layer is epitaxially grown on the second isolation structure.
    Type: Application
    Filed: May 19, 2020
    Publication date: November 25, 2021
    Inventors: Papo CHEN, John BOLAND, Schubert S. CHU, Errol Antonio C. SANCHEZ, Stephen MOFFATT
  • Patent number: 11177144
    Abstract: Embodiments of the present disclosure provide a thermal process chamber that includes a substrate support, a first plurality of heating elements disposed over or below the substrate support, and a spot heating module disposed over the substrate support. The spot heating module is utilized to provide local heating of regions on a substrate disposed on the substrate support during processing. Localized heating of the substrate alters temperature profile. The shape of the beam spot produced by the spot heating module can be modified without making changes to the optics of the spot heating module.
    Type: Grant
    Filed: May 9, 2019
    Date of Patent: November 16, 2021
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Shu-Kwan Lau, Zhiyuan Ye, Zuoming Zhu, Koji Nakanishi, Toshiyuki Nakagawa, Nyi O. Myo, Schubert S. Chu
  • Patent number: 11171023
    Abstract: Embodiments of the present disclosure generally relate to apparatus and methods for semiconductor processing, more particularly, to a thermal process chamber. The thermal process chamber may include a substrate support, a first plurality of heating elements disposed over the substrate support, and one or more high-energy radiant source assemblies disposed over the first plurality of heating elements. The one or more high-energy radiant source assemblies are utilized to provide local heating of cold regions on a substrate disposed on the substrate support during processing. Localized heating of the substrate improves temperature profile, which in turn improves deposition uniformity.
    Type: Grant
    Filed: October 7, 2016
    Date of Patent: November 9, 2021
    Assignee: Applied Materials, Inc.
    Inventors: Schubert S. Chu, Douglas E. Holmgren, Kartik Shah, Palamurali Gajendra, Nyi O. Myo, Preetham Rao, Kevin Joseph Bautista, Zhiyuan Ye, Martin A. Hilkene, Errol Antonio C. Sanchez, Richard O. Collins
  • Patent number: 11164767
    Abstract: Implementations of the present disclosure generally relate to methods and apparatuses for epitaxial deposition on substrate surfaces. More particularly, implementations of the present disclosure generally relate to an integrated system for processing N-type metal-oxide semiconductor (NMOS) devices. In one implementation, a cluster tool for processing a substrate is provided. The cluster tool includes a pre-clean chamber, an etch chamber, one or more pass through chambers, one or more outgassing chambers, a first transfer chamber, a second transfer chamber, and one or more process chambers. The pre-clean chamber and the etch chamber are coupled to a first transfer chamber. The one or more pass through chambers are coupled to and disposed between the first transfer chamber and the second transfer chamber. The one or more outgassing chambers are coupled to the second transfer chamber. The one or more process chambers are coupled to the second transfer chamber.
    Type: Grant
    Filed: October 2, 2019
    Date of Patent: November 2, 2021
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Xinyu Bao, Hua Chung, Schubert S. Chu
  • Patent number: 11164737
    Abstract: Implementations of the present disclosure generally relates to a transfer chamber coupled to at least one vapor phase epitaxy chamber a plasma oxide removal chamber coupled to the transfer chamber, the plasma oxide removal chamber comprising a lid assembly with a mixing chamber and a gas distributor; a first gas inlet formed through a portion of the lid assembly and in fluid communication with the mixing chamber; a second gas inlet formed through a portion of the lid assembly and in fluid communication with the mixing chamber; a third gas inlet formed through a portion of the lid assembly and in fluid communication with the mixing chamber; and a substrate support with a substrate supporting surface; a lift member disposed in a recess of the substrate supporting surface and coupled through the substrate support to a lift actuator; and a load lock chamber coupled to the transfer chamber.
    Type: Grant
    Filed: August 10, 2018
    Date of Patent: November 2, 2021
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Lara Hawrylchak, Schubert S. Chu, Tushar Mandrekar, Errol C. Sanchez, Kin Pong Lo
  • Publication number: 20210324514
    Abstract: A method and apparatus for a process chamber for thermal processing is described herein. The process chamber is a dual process chamber and shares a chamber body. The chamber body includes a first and a second set of gas inject passages. The chamber body may also include a first and a second set of exhaust ports. The process chamber may have a shared gas panel and/or a shared exhaust conduit. The process chamber described herein enables for the processing of multiple substrates simultaneously with improved process gas flow and heat distribution.
    Type: Application
    Filed: March 31, 2021
    Publication date: October 21, 2021
    Inventors: Zhiyuan YE, Shu-Kwan Danny LAU, Brian H. BURROWS, Lori WASHINGTON, Herman DINIZ, Martin A. HILKENE, Richard O. COLLINS, Nyi O. MYO, Manish HEMKAR, Schubert S. CHU
  • Publication number: 20210285105
    Abstract: Embodiments of the present disclosure generally relate to apparatus and methods for semiconductor processing, more particularly, to a thermal process chamber. The thermal process chamber includes a substrate support, a first plurality of heating elements disposed over or below the substrate support, and a spot heating module disposed over the substrate support. The spot heating module is utilized to provide local heating of cold regions on a substrate disposed on the substrate support during processing. Localized heating of the substrate improves temperature profile, which in turn improves deposition uniformity.
    Type: Application
    Filed: May 26, 2021
    Publication date: September 16, 2021
    Inventors: Shu-Kwan LAU, Koji NAKANISHI, Toshiyuki NAKAGAWA, Zuoming ZHU, Zhiyuan YE, Joseph M. RANISH, Nyi O. MYO, Errol Antonio C. SANCHEZ, Schubert S. CHU
  • Patent number: 11057963
    Abstract: Methods and apparatus disclosed herein generally relate to lamp heating of process chambers used to process semiconductor substrates. More specifically, implementations disclosed herein relate to arrangement and control of lamps for heating of semiconductor substrates. In some implementations of the present disclosure, fine-tuning of temperature control is achieved by dividing different lamps within an array of lamps into various subgroups or lamp assemblies defined by a specific characteristic. These various subgroups may be based on characteristics such as lamp design and/or lamp positioning within the processing chamber.
    Type: Grant
    Filed: September 13, 2018
    Date of Patent: July 6, 2021
    Assignee: Applied Materials, Inc.
    Inventors: Zhepeng Cong, Schubert S. Chu