Patents by Inventor Yang-Liang Pai

Yang-Liang Pai 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: 8298043
    Abstract: Methods for extending the service life of a CMP pad dresser having a substrate and a plurality of superabrasive particles disposed thereon which is used to dress a CMP pad are disclosed and described. The method may include dressing the chemical mechanical polishing pad with the dresser; determining superabrasive particle wear by measuring a mechanical property of the pad, dresser, or combination thereof; and responding to the mechanical property measurement by varying pressure and RPM between the pad and the dresser in relation to the superabrasive particle wear in order to extend dresser life.
    Type: Grant
    Filed: July 6, 2010
    Date of Patent: October 30, 2012
    Inventors: Chien-Min Sung, Yang-Liang Pai
  • Publication number: 20110003538
    Abstract: Methods for extending the service life of a CMP pad dresser having a substrate and a plurality of superabrasive particles disposed thereon which is used to dress a CMP pad are disclosed and described. The method may include dressing the chemical mechanical polishing pad with the dresser; determining superabrasive particle wear by measuring a mechanical property of the pad, dresser, or combination thereof; and responding to the mechanical property measurement by varying pressure and RPM between the pad and the dresser in relation to the superabrasive particle wear in order to extend dresser life.
    Type: Application
    Filed: July 6, 2010
    Publication date: January 6, 2011
    Inventors: Chien-Min Sung, Yang-Liang Pai
  • Publication number: 20100291841
    Abstract: Methods and systems for removing dirt and/or debris from a CMP pad surface during CMP pad processing are provided. In one aspect, a method for removing debris from a CMP pad surface during CMP processing can include rotating a CMP pad having a polishing surface, and pressing a CMP pad dresser into the polishing surface of the CMP pad, the CMP pad dresser having a plurality of superabrasive particles coupled thereto and oriented toward the CMP pad. The method can further include spraying a jet of liquid onto the polishing surface of the CMP pad with sufficient force to dislodge debris from the polishing surface of the CMP pad.
    Type: Application
    Filed: March 29, 2010
    Publication date: November 18, 2010
    Inventors: Chien-Min Sung, Yang-Liang Pai
  • Patent number: 7749050
    Abstract: Methods for extending the service life of a CMP pad dresser having a substrate and a plurality of superabrasive particles disposed thereon which is used to dress a CMP pad are disclosed and described. The method may include dressing the chemical mechanical polishing pad with the dresser; determining superabrasive particle wear by measuring a mechanical property of the pad, dresser, or combination thereof; and responding to the mechanical property measurement by varying pressure and RPM between the pad and the dresser in relation to the superabrasive particle wear in order to extend dresser life.
    Type: Grant
    Filed: December 30, 2008
    Date of Patent: July 6, 2010
    Inventors: Chien-Min Sung, Yang-Liang Pai
  • Publication number: 20090170407
    Abstract: Methods for extending the service life of a CMP pad dresser having a substrate and a plurality of superabrasive particles disposed thereon which is used to dress a CMP pad are disclosed and described. The method may include dressing the chemical mechanical polishing pad with the dresser; determining superabrasive particle wear by measuring a mechanical property of the pad, dresser, or combination thereof; and responding to the mechanical property measurement by varying pressure and RPM between the pad and the dresser in relation to the superabrasive particle wear in order to extend dresser life.
    Type: Application
    Filed: December 30, 2008
    Publication date: July 2, 2009
    Inventors: Chien-Min Sung, Yang-Liang Pai
  • Patent number: 7473162
    Abstract: Methods for extending the service life of a CMP pad dresser having a substrate and a plurality of superabrasive particles disposed thereon which is used to dress a CMP pad are disclosed and described. Generally, the method may include dressing the chemical mechanical polishing pad with the dresser and varying pressure between the pad and the dresser in relation to superabrasive particle wear, such that the dresser life is extended.
    Type: Grant
    Filed: February 6, 2006
    Date of Patent: January 6, 2009
    Inventors: Chien-Min Sung, Yang-Liang Pai
  • Publication number: 20060068691
    Abstract: A replaceable superabrasive tool insert for use in an abrading tool body includes an attachable shank, having a working end and an attachment end. At least one superabrasive particle is individually attached to the shank at the working end of the shank to provide an abrading interface between the shank and a work piece to be abraded. The attachment end of the shank is configured to be removably attached to the abrading tool body.
    Type: Application
    Filed: September 28, 2004
    Publication date: March 30, 2006
    Inventors: Chien-Min Sung, Frank Lin, Yang-Liang Pai