Patents by Inventor Raechel Chu-Hui Tan

Raechel Chu-Hui Tan 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: 11772958
    Abstract: Disclosed herein are embodiments of a mass flow control apparatus, systems incorporating the same, and methods using the same. In one embodiment, a mass flow control apparatus comprises a flow modulating valve configured to modulate gas flow in a gas flow channel, a sensor device, such as a micro-electromechanical (MEMS) device, configured to generate a signal responsive to a condition of the gas flow, and a processing device operatively coupled to the flow modulating valve and the sensor device to control the flow modulating valve based on a signal received from the sensor device.
    Type: Grant
    Filed: September 14, 2021
    Date of Patent: October 3, 2023
    Assignee: Applied Materials, Inc.
    Inventors: Nir Merry, Paul Wirth, Ming Xu, Sushant Koshti, Raechel Chu-Hui Tan
  • Publication number: 20230195072
    Abstract: A method includes receiving first sensor data associated with a first iteration of a first recipe operation of a substrate processing recipe. The method further includes determining disturbance data, the disturbance data being a difference between the first sensor data and first setpoint data of the first recipe operation. The method further includes determining, based at least in part on the disturbance data, a first actuation value associated with one or more components of a processing chamber. Actuation of the one or more components according to the first actuation value compensates for the disturbance data. The method further includes causing the actuation of the one or more components based on the first actuation value during a subsequent iteration of the first recipe operation of the substrate processing recipe to compensate for the disturbance data.
    Type: Application
    Filed: December 22, 2021
    Publication date: June 22, 2023
    Inventors: Atilla Kilicarslan, Raechel Chu-Hui Tan, Brooke Elise Montgomery, Paul Z. Wirth
  • Publication number: 20230048337
    Abstract: Disclosed are implementations for minimizing substrate contamination during pressure changes in substrate processing systems. Over a duration of a pressure change (increase or decrease) in a chamber of a substrate processing system, a flow rate is adjusted multiple times to reduce occurrence of contaminant particles in an environment of the chamber. In some instances, the flow rate is changed continuously using at least one dynamic valve that enable continuous control over the pressure dynamics of the chamber.
    Type: Application
    Filed: August 12, 2022
    Publication date: February 16, 2023
    Inventors: Robert A. Medure, Raechel Chu-Hui Tan, Changgong Wang, Yuanhong Guo, Sai Padhy, Ashley M. Okada, Kenneth Le, Atilla Kilicarslan, Dean C. Hruzek
  • Publication number: 20220083081
    Abstract: Disclosed herein are embodiments of a mass flow control apparatus, systems incorporating the same, and methods using the same. In one embodiment, a mass flow control apparatus comprises a flow modulating valve configured to modulate gas flow in a gas flow channel, a sensor device, such as a micro-electromechanical (MEMS) device, configured to generate a signal responsive to a condition of the gas flow, and a processing device operatively coupled to the flow modulating valve and the sensor device to control the flow modulating valve based on a signal received from the sensor device.
    Type: Application
    Filed: September 14, 2021
    Publication date: March 17, 2022
    Inventors: Nir Merry, Paul Wirth, Ming Xu, Sushant Koshti, Raechel Chu-Hui Tan