Patents by Inventor Werner Budweiser

Werner Budweiser 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).

  • Method for transfering solder to a device and/or testing the device
    Patent number: 6409073
    Abstract: A substrate (10, 80) includes a conductive layer (16, 82) which is non-wettable by solder. A solder receiving stud (22, 84) is formed on the conductive layer, preferably by plating. If used for transferring solder, a solder bump (32) is selectively formed on the solder receiving stud since the surrounding conductive layer is not wettable by the solder. A receiving substrate, such as a semiconductor device (100), is aligned with the substrate. The solder bump is heated to a liquidus state and the solder bump makes physical contact with a solder accepting stud (120) of the receiving substrate. Because the area of the solder accepting stud is larger than the area of the corresponding stud on the transfer substrate, the majority of the solder will transfer to the receiving substrate upon separation. Alternatively, the device could itself already have bumps formed thereon, in which case an unbumped substrate is used to test the device, and solder remains on the device upon separation.
    Type: Grant
    Filed: February 27, 2001
    Date of Patent: June 25, 2002
    Assignee: Fraunhofer-Gesellschaft Zur Foerderung der Angewandten Forschung E.V.
    Inventors: Kenneth Kaskoun, Erik Jung, Werner Budweiser