Patents by Inventor Katrin Ebner

Katrin Ebner 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: 7156933
    Abstract: By applying heat and pressure to a backing film with an adhesive layer while mounting it to a polish head used for chemical mechanical polishing, inhomogeneities inside the adhesive layer, e.g. thickness and compressibility variations or air bubbles can easily be removed. A corresponding configuration includes a device for exerting a uniform pressure force, which can be a roller made of silicone or rubber, or a plate. The configuration also includes a device for heating and a control unit for controlling the heat and the pressure force. After the backing film is installed using this configuration and method, the polish head can be used to uniformly remove material from a semiconductor wafer surface and therefore the wafer yield is advantageously increased.
    Type: Grant
    Filed: June 16, 2003
    Date of Patent: January 2, 2007
    Assignee: Infineon Technologies SC 300 GmbH & Co. KG
    Inventors: Katrin Ebner, David Erdmann, Walter Glashauser, Lutz Teichgräber
  • Publication number: 20050075049
    Abstract: By applying heat and pressure to a backing film with an adhesive layer while mounting it to a polish head used for chemical mechanical polishing, inhomogeneities inside the adhesive layer, e.g. thickness and compressibility variations or air bubbles can easily be removed. A corresponding configuration includes a device for exerting a uniform pressure force, which can be a roller made of silicone or rubber, or a plate. The configuration also includes a device for heating and a control unit for controlling the heat and the pressure force. After the backing film is installed using this configuration and method, the polish head can be used to uniformly remove material from a semiconductor wafer surface and therefore the wafer yield is advantageously increased.
    Type: Application
    Filed: June 16, 2003
    Publication date: April 7, 2005
    Inventors: Katrin Ebner, David Erdmann, Walter Glashauser, Lutz Teichgraber
  • Patent number: 6824456
    Abstract: A polish head for Chemical Mechanical Polishing includes a backing film of silicone on a rigid support element, preferably, of amorphous ceramic. The silicone backing film is fabricated by molding, thereby enabling an appropriate cross-sectional shape for specific polishing needs. The head provides a uniform polishing of a semiconductor wafer.
    Type: Grant
    Filed: March 31, 2003
    Date of Patent: November 30, 2004
    Assignee: Infineon Technologies SC300 GmbH & Co. KG
    Inventors: Katrin Ebner, Walter Glashauser
  • Publication number: 20030181061
    Abstract: A polish head for Chemical Mechanical Polishing includes a backing film of silicone on a rigid support element, preferably, of amorphous ceramic. The silicone backing film is fabricated by molding, thereby enabling an appropriate cross-sectional shape for specific polishing needs. The head provides a uniform polishing of a semiconductor wafer.
    Type: Application
    Filed: March 31, 2003
    Publication date: September 25, 2003
    Inventors: Katrin Ebner, Walter Glashauser
  • Patent number: 6375549
    Abstract: A polishing head (200) for a chemical-mechanical polishing machine that holds a semiconductor wafer (150) against a polishing pad (140) has a chuck (295) with a pressure chamber (210) to apply a down force substantially equally to the wafer backside (152). An electrode arrangement (270) within the chamber (210) is located coplanar to the wafer (150) to provide compensation to wafer or chuck irregularities by applying a compensation force having a distribution corresponding to the irregularities.
    Type: Grant
    Filed: March 17, 2000
    Date of Patent: April 23, 2002
    Assignee: Motorola, Inc.
    Inventors: Walter Glashauser, Lutz Teichgräber, David Haggart, Katrin Ebner