Patents by Inventor Hansel LO

Hansel LO 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: 20260152851
    Abstract: A method and processing chamber for plenum driven hydroxyl combustion oxidation. A mixture is produced in a plenum. The mixture includes a first reactive gas injected from a first inlet and a second reactive gas injected from a second inlet. The mixture is injected towards a substrate of a processing chamber at a jet gas velocity greater than a flame gas velocity. A radical is produced as a function of the first gas and the second gas while heating the chamber.
    Type: Application
    Filed: January 26, 2026
    Publication date: June 4, 2026
    Inventors: Christopher S. OLSEN, Sameh HELMY, Hansel LO, Eric Kihara SHONO
  • Publication number: 20260139374
    Abstract: A method for forming an oxide layer includes forming at least a portion of a gate oxide layer on inner surfaces of an opening, forming a silicon nitride capping layer on the portion of the gate oxide layer, and performing a conversion process to at least partially oxidize the silicon nitride capping layer, forming a nitrogen-doped gate oxide layer.
    Type: Application
    Filed: September 30, 2025
    Publication date: May 21, 2026
    Inventors: Fredrick FISHBURN, Raghuveer Satya MAKALA, Zhijun CHEN, Hao ZHANG, Johanes F. SWENBERG, Christopher S. OLSEN, Hansel LO, Kristopher Mikael KOSKELA, Hoi Sung CHUNG, Chang Seok KANG
  • Patent number: 12603252
    Abstract: The present disclosure generally relates to a processing system comprising a flow assembly for processing thin substrates using low flow rates. The flow assembly comprises at least one compression part configured to compress a volume occupied by gas radicals flowing at a rate of about 0.1 sim to 5 slm from a plasma source to a chamber in two dimensions. The at least one compression part compresses the volume occupied by the gas radicals about 50% to about 90% from an initial cross-sectional area of the port of the process chamber. In some embodiments, the at least one compression part is a two compression parts, where a first compression part coupled to the port of the process chamber is larger in volume than a second compression part coupled to the first compression part and the chamber. In such an embodiment, the first and second compression parts are removable.
    Type: Grant
    Filed: August 15, 2024
    Date of Patent: April 14, 2026
    Assignee: Applied Materials, Inc.
    Inventors: Edy Cardona, Eric Kihara Shono, Martin John Ripley, Hansel Lo, Christopher S. Olsen
  • Patent number: 12595560
    Abstract: The present disclosure generally provides methods of providing at least metastable radical molecular species and/or radical atomic species to a processing volume of a process chamber during an electronic device fabrication process, and apparatus related thereto. In one embodiment, the apparatus is a gas injection assembly disposed between a remote plasma source and a process chamber. The gas injection assembly includes a body, a dielectric liner disposed in the body that defines a gas mixing volume, a first flange to couple the gas injection assembly to a process chamber, and a second flange to couple the gas injection assembly to the remote plasma source. The gas injection assembly further includes one or more gas injection ports formed through the body and the liner.
    Type: Grant
    Filed: June 2, 2023
    Date of Patent: April 7, 2026
    Assignee: Applied Materials, Inc.
    Inventors: Vishwas Kumar Pandey, Eric Kihara Shono, Kartik Shah, Christopher S. Olsen, Agus Sofian Tjandra, Tobin Kaufman-Osborn, Taewan Kim, Hansel Lo
  • Patent number: 12559841
    Abstract: A method and processing chamber for plenum driven hydroxyl combustion oxidation. A mixture is produced in a plenum. The mixture includes a first reactive gas injected from a first inlet and a second reactive gas injected from a second inlet. The mixture is injected towards a substrate of a processing chamber at a jet gas velocity greater than a flame gas velocity. A radical is produced as a function of the first gas and the second gas while heating the chamber.
    Type: Grant
    Filed: April 25, 2023
    Date of Patent: February 24, 2026
    Assignee: Applied Materials, Inc.
    Inventors: Christopher S. Olsen, Sameh Helmy, Hansel Lo, Eric Kihara Shono
  • Publication number: 20260051460
    Abstract: The present disclosure generally relates to a processing system comprising a flow assembly for processing thin substrates using low flow rates. The flow assembly comprises at least one compression part configured to compress a volume occupied by gas radicals flowing at a rate of about 0.1 slm to 5 slm from a plasma source to a chamber in two dimensions. The at least one compression part compresses the volume occupied by the gas radicals about 50% to about 90% from an initial cross-sectional area of the port of the process chamber. In some embodiments, the at least one compression part is a two compression parts, where a first compression part coupled to the port of the process chamber is larger in volume than a second compression part coupled to the first compression part and the chamber. In such an embodiment, the first and second compression parts are removable.
    Type: Application
    Filed: August 15, 2024
    Publication date: February 19, 2026
    Inventors: Edy CARDONA, Eric Kihara SHONO, Martin John RIPLEY, Hansel LO, Christopher S. OLSEN
  • Publication number: 20260026080
    Abstract: The present subject matter relates to systems and methods for producing a MOSFET by applying a nitridation pre-treatment (e.g., plasma or thermal) directly on a silicon carbide surface. The nitridation pre-treatment can be followed by a deposited gate oxide. In this way, instead of using a thermal oxide and a thermal nitrogen oxide anneal, nitrogen is introduced at the interface to passivate traps without any thermal oxidation of the silicon carbide. In addition, the post-anneal step can be performed, resulting in an improvement in mobility.
    Type: Application
    Filed: July 16, 2024
    Publication date: January 22, 2026
    Applicant: Applied Materials, Inc.
    Inventors: Stephen Larsen WEEKS, Archana KUMAR, Joshua Stuart HOLT, Ludovico MEGALINI, Siddarth KRISHNAN, Michael Patrick CHUDZIK, Raghav SREENIVASAN, Hansel LO, Lucien DATE
  • Publication number: 20250379047
    Abstract: The methods and devices described herein provide for thin and high-quality oxide layers with controlled interfacial roughness. In some embodiments, the aforementioned oxide layers are formed using radical oxidation processes with slow oxidation rates and relatively low-to-moderate temperatures, followed by nitrogen (N2) annealing at relatively high temperatures to densify the oxide layer(s) while also relieving (e.g., relaxing) interfacial stresses by inducing the viscous flow of the oxide.
    Type: Application
    Filed: June 5, 2024
    Publication date: December 11, 2025
    Inventors: Jae Young PARK, Young Jun CHOI, Ho Chang LEE, Jiseon PARK, Hansel LO, Johanes F. SWENBERG, Paola DE CECCO, Michael BOWES, Andy LO, John Timothy BOLAND, Rene GEORGE
  • Patent number: 12473644
    Abstract: A method for forming an oxide layer includes forming a protective interlayer oxide on sidewalls of a trench formed on a substrate, forming a silicon nitride layer on the protective interlayer oxide, by a plasma-enhanced atomic layer deposition (PE ALD) process utilizing nitrogen-containing process gas, the silicon nitride layer having a concentration gradient of nitrogen varying from high concentration away from the protective interlayer oxide to low concentration near the protective interlayer oxide, and performing a conversion process to oxidize the formed silicon nitride layer to at least partially convert the formed silicon nitride layer to a silicon oxide layer.
    Type: Grant
    Filed: May 1, 2024
    Date of Patent: November 18, 2025
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Fredrick Fishburn, Hao Zhang, Zhijun Chen, Johanes Swenberg, Christopher S. Olsen, Hansel Lo, Kristopher Mikael Koskela, Hoi-Sung Chung, Chang Seok Kang, Raghuveer Satya Makala
  • Patent number: 12463030
    Abstract: Described herein is a method for selectively oxidizing a substrate. The method includes forming a non-conformal layer on at least one side surface of a trench or a hole of a substrate. After forming the non-conformal layer, the at least one trench or at least one hole may be selectively oxidized, wherein oxidation of the non-conformal layer and an exposed portion of the at least one side wall not covered by the non-conformal layer occurs to form an oxide layer. The oxide layer is thicker at a lower portion of the at least one side wall than the upper portion of the at least one side wall, such that it tapers.
    Type: Grant
    Filed: September 29, 2022
    Date of Patent: November 4, 2025
    Assignee: Applied Materials, Inc
    Inventors: Hansel Lo, Chris Olsen
  • Publication number: 20250266257
    Abstract: The disclosure provides a system and methods of performing a cyclic growth oxidation process. The method includes forming a plasma of a plasma gas using a remote plasma source fluidly coupled to a conduit coupled to a first nozzle of a processing chamber. An oxidation radical is produced. A first oxidation process is performed by introducing the oxidation radical for a first period of time to the processing chamber using the first nozzle. A bake process is performed for a second period of time. A second oxidation process is performed by introducing the oxidation radical for a third period of time.
    Type: Application
    Filed: February 15, 2024
    Publication date: August 21, 2025
    Inventors: Hansel LO, Christopher S. OLSEN, Sameh HELMY
  • Publication number: 20250075321
    Abstract: A method for forming an oxide layer includes forming a protective interlayer oxide on sidewalls of a trench formed on a substrate, forming a silicon nitride layer on the protective interlayer oxide, by a plasma-enhanced atomic layer deposition (PE ALD) process utilizing nitrogen-containing process gas, the silicon nitride layer having a concentration gradient of nitrogen varying from high concentration away from the protective interlayer oxide to low concentration near the protective interlayer oxide, and performing a conversion process to oxidize the formed silicon nitride layer to at least partially convert the formed silicon nitride layer to a silicon oxide layer.
    Type: Application
    Filed: May 1, 2024
    Publication date: March 6, 2025
    Inventors: Fredrick FISHBURN, Hao ZHANG, Zhijun CHEN, Johanes SWENBERG, Christopher S. OLSEN, Hansel LO, Kristopher Mikael KOSKELA, Hoi-Sung CHUNG, Chang Seok KANG, Raghuveer Satya MAKALA
  • Publication number: 20250037987
    Abstract: Exemplary semiconductor processing methods may include performing a pre-treatment on a substrate housed within a processing region of a semiconductor processing chamber. The substrate may include a layer of silicon-and-carbon-containing material. The pre-treatment may remove native oxide or residue from a surface of the layer of silicon-and-carbon-containing material. The methods may include providing a silicon-containing precursor to the processing region of the semiconductor processing chamber. The methods may include contacting the substrate with the silicon-containing precursor. The contacting may deposit a layer of silicon-containing material on the layer of silicon-and-carbon-containing material. The methods may include providing an oxygen-containing precursor to the processing region of the semiconductor processing chamber. The methods may include contacting the substrate with the oxygen-containing precursor.
    Type: Application
    Filed: July 26, 2023
    Publication date: January 30, 2025
    Applicant: Applied Materials, Inc.
    Inventors: Stephen Weeks, Hansel Lo, John Tolle, Christopher S. Olsen, Siddarth Krishnan
  • Patent number: 12139790
    Abstract: Embodiments described herein generally relate to a processing system and a method of delivering a reactant gas. The processing system includes a substrate support system, an injection cone, and an intake. The injection cone includes a linear rudder. The linear rudder is disposed such that the flow of reactant gas through the injection cone results in film growth on a specific portion of a substrate. The method includes flowing the gas through the injection cone and delivering the gas onto the substrate below. The localization of the reactant gas, allows for film growth on a specific portion of the substrate.
    Type: Grant
    Filed: September 9, 2020
    Date of Patent: November 12, 2024
    Assignee: Applied Materials, Inc.
    Inventors: Vishwas Kumar Pandey, Christopher Olsen, Rene George, Eric Shono, Lara Hawrylchak, Erika Hansen, Tobin Kaufman-Osborn, Hansel Lo, Kartik Shah
  • Publication number: 20240360996
    Abstract: Systems and methods for hydroxyl driven combustion include introducing a first gas via at least a first orifice into a processing chamber having a substrate disposed on a substrate support. A second gas is introduced into the processing chamber via a plurality of second orifices. The plurality of first orifices and the plurality of second orifices are oriented in an alternating pattern such that each second orifice of the plurality of second orifices is at least partially surrounded by at least a first orifice of the plurality of first orifices. A radical is produced as a function of the first gas and the second gas while heating the chamber.
    Type: Application
    Filed: April 25, 2023
    Publication date: October 31, 2024
    Inventors: Christopher S. OLSEN, Sameh HELMY, Hansel LO, Eric Kihara SHONO
  • Publication number: 20240360559
    Abstract: A method and processing chamber for plenum driven hydroxyl combustion oxidation. A mixture is produced in a plenum. The mixture includes a first reactive gas injected from a first inlet and a second reactive gas injected from a second inlet. The mixture is injected towards a substrate of a processing chamber at a jet gas velocity greater than a flame gas velocity. A radical is produced as a function of the first gas and the second gas while heating the chamber.
    Type: Application
    Filed: April 25, 2023
    Publication date: October 31, 2024
    Inventors: Christopher S. OLSEN, Sameh HELMY, Hansel LO, Eric Kihara SHONO
  • Publication number: 20240350994
    Abstract: Systems and methods of orifice driven hydroxyl combustion oxidation include introducing a first gas via at least a first orifice into a processing chamber having a substrate disposed on a substrate support. A second gas is introduced into the processing chamber via a plurality of second orifices. The plurality of second orifices are oriented substantially perpendicular to the at least a first orifice. A radical is produced as a function of the first gas and the second gas while heating the chamber.
    Type: Application
    Filed: April 24, 2023
    Publication date: October 24, 2024
    Inventors: Christopher S. OLSEN, Sameh HELMY, Hansel LO, Eric Kihara SHONO
  • Publication number: 20240297022
    Abstract: The disclosure provides system, computer readable medium, and method for producing a hydroxyl radical. A plasma of a plasma gas is formed, via a controller, using a remote plasma source fluidly coupled to a gas inlet conduit coupled to a first nozzle of a processing chamber. A first gas radical is produced by flowing a first gas from a first gas source through the remote plasma source. The first gas radical is introduced into the processing chamber using the gas inlet conduit coupled to the first nozzle. A second gas from a second gas source is introduced using a plurality of second nozzles fluidly of the processing chamber. An oxidation radical is produced by mixing the first gas radical and the second gas in the processing chamber.
    Type: Application
    Filed: August 2, 2023
    Publication date: September 5, 2024
    Inventors: Hansel LO, Erika HANSEN, Christopher S. OLSEN
  • Publication number: 20240242962
    Abstract: The present disclosure generally relate to semiconductor device fabrication, and more particularly, to methods of forming a bottom thick oxide layer in a high aspect ratio semiconductor structures. In certain embodiments, the method includes depositing a non-conformal oxide layer on in a feature on a substrate, performing an oxidation process to thermally grow an oxide layer beneath the deposited non-conformal oxide layer in the feature, and selectively stripping the non-conformal oxide layer to expose the thermally grown oxide layer.
    Type: Application
    Filed: January 12, 2023
    Publication date: July 18, 2024
    Inventors: Dimitrios PAVLOPOULOS, Hansel LO, Christopher S. OLSEN
  • Publication number: 20240177990
    Abstract: Methods of treating a substrate are provided. In some embodiments, the method includes exposing a substrate to a vacuum, wherein the substrate has one or more memory holes or trenches. The method further includes treating the substrate with a pre-treatment gas or plasma. The method includes oxidizing the substrate while the substrate is still under the vacuum. In some embodiments, the one or more memory holes have impurity buildup.
    Type: Application
    Filed: November 29, 2023
    Publication date: May 30, 2024
    Inventors: Hansel LO, Christopher S. OLSEN, Erika HANSEN