Patents by Inventor Diana X. Ma

Diana X. Ma 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: 20090139657
    Abstract: A semiconductor processing system includes a factory interface. A central transfer chamber is coupled to the factory interface. A first number of etch chambers are coupled to the central transfer chamber. The first number of etch chambers are configured to etch a substrate at about a first processing time. A second number of post-etch treatment chambers are coupled to the central transfer chamber. The second number of post-etch treatment chambers are configured to process the substrate at about a second processing time, wherein a ratio of the first number to the second number is substantially proportional to a ratio of the first processing time to the second processing time.
    Type: Application
    Filed: September 10, 2008
    Publication date: June 4, 2009
    Applicant: Applied Materials, Inc.
    Inventors: CHANGHUN LEE, Brad Eaton, Diana X. Ma
  • Patent number: 5753044
    Abstract: An inductively coupled RF plasma reactor for processing semiconductor wafer includes a reactor chamber having a side wall and a ceiling, a wafer pedestal for supporting the wafer in the chamber, an RF power source, apparatus for introducing a processing gas into the reactor chamber, and a coil inductor adjacent the reactor chamber connected to the RF power source, the coil inductor including (a) a side section facing a portion of the side wall and including a bottom winding and a top winding, the top winding being at a height corresponding at least approximately to a top height of the ceiling, and (b) a top section extending radially inwardly from the top winding of the side section so as to overlie at least a substantial portion of the ceiling.
    Type: Grant
    Filed: February 15, 1995
    Date of Patent: May 19, 1998
    Assignee: Applied Materials, Inc.
    Inventors: Hiroji Hanawa, Gerald Zheyao Yin, Diana X. Ma, Phil M. Salzman, Peter Loewenhardt, Allen Zhao
  • Patent number: 5540824
    Abstract: Capacitive coupling and RF power dissipation is advantageously reduced in the present invention by employing an RF coil having plural coil sections, each coil section connected across an RF source, commonly tapped ones of the coil sections being wound in opposite directions. Capacitive coupling and RF power dissipation is further reduced by employing a top lid having an outer insulating annulus and an inner conducting disk portion, the conducting disk portion being displaced or spaced apart from the coil by the width of the annulus. This displacement significantly reduces the RF power dissipation or coupling from the top winding of the coil to the lid. Furthermore, the plural coil sections or mirror coil configuration reduces sputtering of insulative material induced by capacitive RF coupling.
    Type: Grant
    Filed: July 18, 1994
    Date of Patent: July 30, 1996
    Assignee: Applied Materials
    Inventors: Gerald Z. Yin, Hiroji Hanawa, Diana X. Ma, Donald Olgado