Patents by Inventor Bong H. Cho

Bong H. Cho 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).

  • Laser systems and methods using triangular-shaped tailored laser pulses for selected target classes
    Patent number: 8476552
    Abstract: Processing workpieces such as semiconductor wafers or other materials with a laser includes selecting a target to process that corresponds to a target class associated with a predefined temporal pulse profile. At least one of the predefined temporal pulse profiles may be triangular. The target class may include, for example unpassivated electrically conductive links or other bare metal structures. Based on the target class associated with the selected target, a laser pulse is generated having a triangular temporal pulse profile. The generated laser pulse is used to process the selected structure.
    Type: Grant
    Filed: April 2, 2010
    Date of Patent: July 2, 2013
    Assignee: Electro Scientific Industries, Inc.
    Inventors: Bong H. Cho, Brian L. Pugh, Andrew Hooper
  • LASER SYSTEMS AND METHODS USING TRIANGULAR-SHAPED TAILORED LASER PULSES FOR SELECTED TARGET CLASSES
    Publication number: 20100276405
    Abstract: Processing workpieces such as semiconductor wafers or other materials with a laser includes selecting a target to process that corresponds to a target class associated with a predefined temporal pulse profile. At least one of the predefined temporal pulse profiles may be triangular. The target class may include, for example unpassivated electrically conductive links or other bare metal structures. Based on the target class associated with the selected target, a laser pulse is generated having a triangular temporal pulse profile. The generated laser pulse is used to process the selected structure.
    Type: Application
    Filed: April 2, 2010
    Publication date: November 4, 2010
    Applicant: ELECTRO SCIENTIFIC INDUSTRIES, INC.
    Inventors: Bong H. Cho, Brian L. Pugh, Andrew Hooper