Patents by Inventor Edward Tseng

Edward Tseng 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: 8164060
    Abstract: System and method for charged particle beam. According an embodiment, the present invention provides a charged particle beam apparatus. The apparatus includes a charged particle source for generating a primary charged particle beam. The apparatus also includes at least one condenser lens for pre-focusing the primary charge particle beam. Furthermore, the apparatus includes a compound objective lens for forming the magnetic field and the electrostatic field to focus the primary charged particle beam onto a specimen in the charged particle beam path. The specimen includes a specimen surface. The compound objective lens includes a conical magnetic lens, an immersion magnetic lens, and an electrostatic lens, the conical magnetic lens including an upper pole piece, a shared pole piece being electrically insulated from the upper pole piece, and an excitation coil.
    Type: Grant
    Filed: July 8, 2010
    Date of Patent: April 24, 2012
    Assignee: Hermes-Microvision, Inc.
    Inventors: Xuedong Liu, Xu Zhang, Joe Wang, Edward Tseng, Zhongwei Chen
  • Patent number: 7919760
    Abstract: The present invention relates to an operation stage of a charged particle beam apparatus which is employed in a scanning electron microscope for substrate (wafer) edge and backside defect inspection or defect review. However, it would be recognized that the invention has a much broader range of applicability. A system and method in accordance with the present invention provides an operation stage for substrate edge inspection or review. The inspection region includes top near edge, to bevel, apex, and bottom bevel. The operation stage includes a supporting stand, a z-stage, an X-Y stage, an electrostatic chuck, a pendulum stage and a rotation track. The pendulum stage mount with the electrostatic chuck has the ability to swing from 0° to 180° while performing substrate top bevel, apex and bottom bevel inspection or review.
    Type: Grant
    Filed: December 9, 2008
    Date of Patent: April 5, 2011
    Assignee: Hermes-Microvision, Inc.
    Inventors: Jack Jau, Hong Xiao, Joe Wang, Zhongwei Chen, Yi Xiang Wang, Edward Tseng
  • Patent number: 7825386
    Abstract: System and method for charged particle beam. According an embodiment, the present invention provides a charged particle beam apparatus. The apparatus includes a charged particle source for generating a primary charged particle beam. The apparatus also includes at least one condenser lens for pre-focusing the primary charge particle beam. Furthermore, the apparatus includes a compound objective lens for forming the magnetic field and the electrostatic field to focus the primary charged particle beam onto a specimen in the charged particle beam path. The specimen includes a specimen surface. The compound objective lens includes a conical magnetic lens, an immersion magnetic lens, and an electrostatic lens, the conical magnetic lens including an upper pole piece, a shared pole piece being electrically insulated from the upper pole piece, and an excitation coil.
    Type: Grant
    Filed: October 24, 2007
    Date of Patent: November 2, 2010
    Assignee: Hermes-Microvision, Inc.
    Inventors: Xuedong Liu, Xu Zhang, Joe Wang, Edward Tseng, Zhongwei Chen
  • Publication number: 20100270468
    Abstract: System and method for charged particle beam. According an embodiment, the present invention provides a charged particle beam apparatus. The apparatus includes a charged particle source for generating a primary charged particle beam. The apparatus also includes at least one condenser lens for pre-focusing the primary charge particle beam. Furthermore, the apparatus includes a compound objective lens for forming the magnetic field and the electrostatic field to focus the primary charged particle beam onto a specimen in the charged particle beam path. The specimen includes a specimen surface. The compound objective lens includes a conical magnetic lens, an immersion magnetic lens, and an electrostatic lens, the conical magnetic lens including an upper pole piece, a shared pole piece being electrically insulated from the upper pole piece, and an excitation coil.
    Type: Application
    Filed: July 8, 2010
    Publication date: October 28, 2010
    Applicant: Hermes-Microvision, Inc.
    Inventors: Xuedong Liu, Xu Zhang, Joe Wang, Edward Tseng, Zhongwei Chen
  • Publication number: 20100140498
    Abstract: The present invention relates to an operation stage of a charged particle beam apparatus which is employed in a scanning electron microscope for substrate (wafer) edge and backside defect inspection or defect review. However, it would be recognized that the invention has a much broader range of applicability. A system and method in accordance with the present invention provides an operation stage for substrate edge inspection or review. The inspection region includes top near edge, to bevel, apex, and bottom bevel. The operation stage includes a supporting stand, a z-stage, an X-Y stage, an electrostatic chuck, a pendulum stage and a rotation track. The pendulum stage mount with the electrostatic chuck has the ability to swing from 0° to 180° while performing substrate top bevel, apex and bottom bevel inspection or review.
    Type: Application
    Filed: December 9, 2008
    Publication date: June 10, 2010
    Applicant: HERMES-MICROVISION, INC.
    Inventors: JACK JAU, HONG XIAO, JOE WANG, ZHONGWEI CHEN, YI XIANG WANG, EDWARD TSENG
  • Publication number: 20080121810
    Abstract: System and method for charged particle beam. According an embodiment, the present invention provides a charged particle beam apparatus. The apparatus includes a charged particle source for generating a primary charged particle beam. The apparatus also includes at least one condenser lens for pre-focusing the primary charge particle beam. Furthermore, the apparatus includes a compound objective lens for forming the magnetic field and the electrostatic field to focus the primary charged particle beam onto a specimen in the charged particle beam path. The specimen includes a specimen surface. The compound objective lens includes a conical magnetic lens, an immersion magnetic lens, and an electrostatic lens, the conical magnetic lens including an upper pole piece, a shared pole piece being electrically insulated from the upper pole piece, and an excitation coil.
    Type: Application
    Filed: October 24, 2007
    Publication date: May 29, 2008
    Applicant: Hermes-Microvision, Inc.
    Inventors: Xuedong Liu, Xu Zhang, Joe Wang, Edward Tseng, Zhongwei Chen