Patents by Inventor Shui Cheung WOO

Shui Cheung WOO 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: 10882298
    Abstract: A bonding apparatus comprises a movable bond head collet, a reference marker configured to move with the bond head collet, a flip head collet, first and second imaging devices and an adjusting mechanism. In use, the first imaging device captures one or more images of the reference marker and the flip head collet, and the second imaging device captures one or more images of the reference marker and the bond head collet. The adjusting mechanism aligns a position of the bond head collet with a position of the flip head collet based on an offset that is determined from the images of the flip head collet, bond head collet and reference marker. The flip head collet retrieves an electrical component and transfers the electrical component to the bond head collet at the alignment position.
    Type: Grant
    Filed: November 7, 2016
    Date of Patent: January 5, 2021
    Assignee: ASM TECHNOLOGY SINGAPORE PTE LTD
    Inventors: Shui Cheung Woo, Liang Hong Tang, Wan Yin Yau, Wai Yuen Cheung, Kui Kam Lam
  • Patent number: 10050008
    Abstract: A method, as well as a system implementing the method, for automatically aligning a bond arm with respect to a bonding support surface for supporting a substrate during a bonding process. The method comprises: rotating the bond arm for a first revolution around a longitudinal axis through a bond head moveably coupled to the bond arm, the first revolution including a plurality of predefined rotary angular positions; pausing the rotation of the bond arm at each of the plurality of rotary angular positions; determining a tilt angle of the bond arm relative to the bonding support surface during each pause at the respective rotary angular position; and selecting the rotary angular position of the bond arm which has a tilt angle that satisfies a predefined specification such that the bond arm is aligned substantially perpendicular to the bonding support surface.
    Type: Grant
    Filed: January 24, 2017
    Date of Patent: August 14, 2018
    Assignee: ASM TECHNOLOGY SINGAPORE PTE LTD
    Inventors: Shui Cheung Woo, Liang Hong Tang, Wan Yin Yau
  • Publication number: 20180211932
    Abstract: A method, as well as a system implementing the method, for automatically aligning a bond arm with respect to a bonding support surface for supporting a substrate during a bonding process. The method comprises: rotating the bond arm for a first revolution around a longitudinal axis through a bond head moveably coupled to the bond arm, the first revolution including a plurality of predefined rotary angular positions; pausing the rotation of the bond arm at each of the plurality of rotary angular positions; determining a tilt angle of the bond arm relative to the bonding support surface during each pause at the respective rotary angular position; and selecting the rotary angular position of the bond arm which has a tilt angle that satisfies a predefined specification such that the bond arm is aligned substantially perpendicular to the bonding support surface.
    Type: Application
    Filed: January 24, 2017
    Publication date: July 26, 2018
    Inventors: Shui Cheung WOO, Liang Hong TANG, Wan Yin YAU
  • Publication number: 20180126718
    Abstract: A bonding apparatus comprises a movable bond head collet, a reference marker configured to move with the bond head collet, a flip head collet, first and second imaging devices and an adjusting mechanism. In use, the first imaging device captures one or more images of the reference marker and the flip head collet, and the second imaging device captures one or more images of the reference marker and the bond head collet. The adjusting mechanism aligns a position of the bond head collet with a position of the flip head collet based on an offset that is determined from the images of the flip head collet, bond head collet and reference marker. The flip head collet retrieves an electrical component and transfers the electrical component to the bond head collet at the alignment position.
    Type: Application
    Filed: November 7, 2016
    Publication date: May 10, 2018
    Inventors: Shui Cheung WOO, Liang Hong TANG, Wan Yin YAU, Wai Yuen CHEUNG, Kui Kam LAM