Patents by Inventor Pallavi ZHANG

Pallavi ZHANG 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: 10770321
    Abstract: Embodiments of the present disclosure provide a method, system, and computer program product for monitoring a service life of a chamber component. In one example, the method includes receiving one or more power measurements of a semiconductor processing chamber from one or more sensors positioned about the semiconductor processing chamber. The processor compares the one or more power measurements to one or more threshold values corresponding to the service life of the chamber component. The processor determines whether the one or more power measurements exceed the threshold values. If the processor determines that the one or more power measurements exceed the threshold values, the processor takes remedial measures for the service life of the chamber component.
    Type: Grant
    Filed: January 4, 2019
    Date of Patent: September 8, 2020
    Assignee: Applied Materials, Inc.
    Inventors: Kang-Lie Chiang, Greg A. Blackburn, Pallavi Zhang, Michael D. Armacost, Nitin Khurana
  • Patent number: 10541169
    Abstract: Embodiments of the disclosure relate to methods and a system for adjusting the chucking voltage of an electrostatic chuck. In one embodiment, a system for plasma processing a substrate includes a plasma processing chamber, a radio-frequency (RF) matching circuit coupled to the chamber, a sensor and a controller. The chamber includes a chamber body having an inner volume, a bipolar electrostatic chuck disposed in the inner volume and a power supply configured to provide chucking voltage to a pair of electrodes embedded within the electrostatic chuck. When plasma is energized within the chamber by the application of RF power through an RF matching circuit, the sensor is configured to detect a change in an electrical characteristic at the RF matching circuit. The controller is coupled to the power supply and configured to adjust the chucking voltage in response to the change in the electrical characteristic detected by the sensor.
    Type: Grant
    Filed: May 12, 2017
    Date of Patent: January 21, 2020
    Assignee: Applied Materials, Inc.
    Inventors: Chong Jiang, Lei Jing, Mingte Liu, Adolph Miller Allen, Michael W. Johnson, Pallavi Zhang, Michael D. Armacost
  • Patent number: 10332773
    Abstract: Embodiments described herein provide an electrostatic carrier for transferring a substrate. The electrostatic carrier may have a transparent body. The transparent body may have a first surface sized to transport the substrate into and out of a processing chamber. The electrostatic carrier may also have one or more electrostatic chucking electrodes coupled to the transparent body. The one or more electrostatic chucking electrodes may include a transparent conductive oxide material. In certain embodiments the transparent conductive oxide material is an indium-tin oxide material.
    Type: Grant
    Filed: May 11, 2016
    Date of Patent: June 25, 2019
    Assignee: Applied Materials, Inc.
    Inventors: Leung Kway Lee, Michael S. Cox, Pallavi Zhang
  • Publication number: 20190148194
    Abstract: Embodiments of the present disclosure provide a method, system, and computer program product for monitoring a service life of a chamber component. In one example, the method includes receiving one or more power measurements of a semiconductor processing chamber from one or more sensors positioned about the semiconductor processing chamber. The processor compares the one or more power measurements to one or more threshold values corresponding to the service life of the chamber component. The processor determines whether the one or more power measurements exceed the threshold values. If the processor determines that the one or more power measurements exceed the threshold values, the processor takes remedial measures for the service life of the chamber component.
    Type: Application
    Filed: January 4, 2019
    Publication date: May 16, 2019
    Inventors: Kang-Lie CHIANG, Greg A. BLACKBURN, Pallavi ZHANG, Michael D. ARMACOST, Nitin KHURANA
  • Patent number: 10177018
    Abstract: Embodiments of the present disclosure provide a method, system, and computer program product for monitoring a service life of a chamber component. In one example, the method includes receiving one or more power measurements of a semiconductor processing chamber from one or more sensors positioned about the semiconductor processing chamber. The processor compares the one or more power measurements to one or more threshold values corresponding to the service life of the chamber component. The processor determines whether the one or more power measurements exceed the threshold values. If the processor determines that the one or more power measurements exceed the threshold values, the processor takes remedial measures for the service life of the chamber component.
    Type: Grant
    Filed: August 10, 2017
    Date of Patent: January 8, 2019
    Assignee: Applied Materials, Inc.
    Inventors: Kang-Lie Chiang, Greg A. Blackburn, Pallavi Zhang, Michael D. Armacost, Nitin Khurana
  • Publication number: 20180330977
    Abstract: Embodiments of the disclosure relate to methods and a system for adjusting the chucking voltage of an electrostatic chuck. In one embodiment, a system for plasma processing a substrate includes a plasma processing chamber, a radio-frequency (RF) matching circuit coupled to the chamber, a sensor and a controller. The chamber includes a chamber body having an inner volume, a bipolar electrostatic chuck disposed in the inner volume and a power supply configured to provide chucking voltage to a pair of electrodes embedded within the electrostatic chuck. When plasma is energized within the chamber by the application of RF power through an RF matching circuit, the sensor is configured to detect a change in an electrical characteristic at the RF matching circuit. The controller is coupled to the power supply and configured to adjust the chucking voltage in response to the change in the electrical characteristic detected by the sensor.
    Type: Application
    Filed: May 12, 2017
    Publication date: November 15, 2018
    Inventors: Chong JIANG, Lei JING, Mingte LIU, Adolph Miller ALLEN, Michael W. JOHNSON, Pallavi ZHANG, Michael D. ARMACOST
  • Publication number: 20180047599
    Abstract: Embodiments of the present disclosure provide a method, system, and computer program product for monitoring a service life of a chamber component. In one example, the method includes receiving one or more power measurements of a semiconductor processing chamber from one or more sensors positioned about the semiconductor processing chamber. The processor compares the one or more power measurements to one or more threshold values corresponding to the service life of the chamber component. The processor determines whether the one or more power measurements exceed the threshold values. If the processor determines that the one or more power measurements exceed the threshold values, the processor takes remedial measures for the service life of the chamber component.
    Type: Application
    Filed: August 10, 2017
    Publication date: February 15, 2018
    Inventors: Kang-Lie CHIANG, Greg A. BLACKBURN, Pallavi ZHANG, Michael D. ARMACOST, Nitin KHURANA
  • Publication number: 20160358803
    Abstract: Embodiments described herein provide an electrostatic carrier for transferring a substrate. The electrostatic carrier may have a transparent body. The transparent body may have a first surface sized to transport the substrate into and out of a processing chamber. The electrostatic carrier may also have one or more electrostatic chucking electrodes coupled to the transparent body. The one or more electrostatic chucking electrodes may include a transparent conductive oxide material. In certain embodiments the transparent conductive oxide material is an indium-tin oxide material.
    Type: Application
    Filed: May 11, 2016
    Publication date: December 8, 2016
    Inventors: Leung Kway LEE, Michael S. COX, Pallavi ZHANG