Patents by Inventor Wai Wah Lee

Wai Wah Lee 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: 9620477
    Abstract: Disclosed is a wire bonder comprising: a processor; a bond head coupled to the processor, the processor being configured to control motion of the bond head; a bonding tool mounted to the bond head, the bonding tool being drivable by the bond head to form an electrical interconnection between a semiconductor die and a substrate to which the semiconductor die is mounted using a bonding wire; and a measuring device coupled to the bond head, the measuring device being operable to measure a deformation of a bonding portion of the bonding wire as the bonding tool is driven by the bond head to connect the bonding wire to the semiconductor die via the bonding portion.
    Type: Grant
    Filed: January 23, 2014
    Date of Patent: April 11, 2017
    Assignee: ASM TECHNOLOGY SINGAPORE PTE LTD
    Inventors: Keng Yew Song, Wai Wah Lee, Yi Bin Wang
  • Patent number: 9502374
    Abstract: A capillary is utilized to form the wedge wire bond comprised in a wire interconnection. A wire holding device is located above a wire clamp and the capillary to secure the wire while the wire clamp is open and not clamping onto the wire. The wire clamp and the capillary may be lifted relative to the wire in a direction away from the wedge wire bond and towards the wire holding device so as to pay out a length of wire from the capillary. At a predetermined height of the capillary, the wire clamp is closed to clamp onto the wire, and thereafter, the capillary and wire clamp may be moved further away from the wedge wire bond to cause the wire to break away from the wedge wire bond and to form the wire tail with a desired length extending from the capillary.
    Type: Grant
    Filed: October 24, 2012
    Date of Patent: November 22, 2016
    Assignee: ASM TECHNOLOGY SINGAPORE PTE LTD.
    Inventors: Keng Yew Song, Wai Wah Lee, Yi Bin Wang, Wen Hua Guo, Xin Wei Zhang
  • Patent number: 9314869
    Abstract: A method of recovering a bonding apparatus from a bonding failure to resume a normal operating state for semiconductor chip fabrication is disclosed. The bonding apparatus comprises: i) a bonding tool for bonding a wire between a semiconductor chip and a substrate; and ii) a position sensor. Specifically, the method comprises the steps of: a) the position sensor determining a position of the bonding tool when the bonding tool contacts a surface to bond the wire to the substrate; b) the bonding apparatus detecting a bonding failure caused by detachment of the semiconductor from the substrate based on the position of the bonding tool; and c) the bonding apparatus detaching the semiconductor chip from the wire.
    Type: Grant
    Filed: January 13, 2012
    Date of Patent: April 19, 2016
    Assignee: ASM Technology Singapore Pte. Ltd.
    Inventors: Wai Wah Lee, Jun Feng Li, Wei Boon Wong, Soo Kin Kenny Tan
  • Publication number: 20140209663
    Abstract: Disclosed is a wire bonder comprising: a processor; a bond head coupled to the processor, the processor being configured to control motion of the bond head; a bonding tool mounted to the bond head, the bonding tool being drivable by the bond head to form an electrical interconnection between a semiconductor die and a substrate to which the semiconductor die is mounted using a bonding wire; and a measuring device coupled to the bond head, the measuring device being operable to measure a deformation of a bonding portion of the bonding wire as the bonding tool is driven by the bond head to connect the bonding wire to the semiconductor die via the bonding portion.
    Type: Application
    Filed: January 23, 2014
    Publication date: July 31, 2014
    Inventors: Keng Yew SONG, Wai Wah LEE, Yi Bin WANG
  • Publication number: 20130180957
    Abstract: A method of recovering a bonding apparatus from a bonding failure to resume a normal operating state for semiconductor chip fabrication is disclosed. The bonding apparatus comprises: i) a bonding tool for bonding a wire between a semiconductor chip and a substrate; and ii) a position sensor. Specifically, the method comprises the steps of: a) the position sensor determining a position of the bonding tool when the bonding tool contacts a surface to bond the wire to the substrate; b) the bonding apparatus detecting a bonding failure caused by detachment of the semiconductor from the substrate based on the position of the bonding tool; and c) the bonding apparatus detaching the semiconductor chip from the wire.
    Type: Application
    Filed: January 13, 2012
    Publication date: July 18, 2013
    Applicant: ASM TECHNOLOGY SINGAPORE PTE. LTD.
    Inventors: Wai Wah LEE, Jun Feng LI, Wei Boon WONG, Soo Kin Kenny TAN
  • Publication number: 20130098877
    Abstract: A capillary is utilized to form the wedge wire bond comprised in a wire interconnection. A wire holding device is located above a wire clamp and the capillary to secure the wire while the wire clamp is open and not clamping onto the wire. The wire clamp and the capillary may be lifted relative to the wire in a direction away from the wedge wire bond and towards the wire holding device so as to pay out a length of wire from the capillary. At a predetermined height of the capillary, the wire clamp is closed to clamp onto the wire, and thereafter, the capillary and wire clamp may be moved further away from the wedge wire bond to cause the wire to break away from the wedge wire bond and to form the wire tail with a desired length extending from the capillary.
    Type: Application
    Filed: October 24, 2012
    Publication date: April 25, 2013
    Inventors: Keng Yew SONG, Wai Wah LEE, Yi Bin WANG, Wen Hua GUO, Xin Wei ZHANG
  • Publication number: 20060011710
    Abstract: A method of forming a wire connection using a bonding tool is provided. A first bond is first formed from a bonding wire fed from the bonding tool at a first bonding point. The bonding wire is then extended from the first bond while moving the bonding tool from the first bonding point towards a second bonding point. Thereafter, the bonding wire is mechanically deformed by contacting the bonding tool against a support surface and the bonding tool is moved in a direction away from the first bond to pull the bonding wire before forming a second bond with the bonding tool.
    Type: Application
    Filed: July 13, 2004
    Publication date: January 19, 2006
    Inventors: Wai Wah Lee, Chia Yen Cho