Patents by Inventor Tom R. Hollingsworth

Tom R. Hollingsworth 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).

  • Flagless semiconductor device
    Patent number: 5521428
    Abstract: A flagless semiconductor device (10) includes a semiconductor die (22) having a plurality of bond pads (26) which are electrically coupled to a plurality of leads (16) by wire bonds (28). The die is supported by two cantilevered tie bars (18). Use of cantilevered tie bars decreases the total plastic-metal interface area in a plastic encapsulated device, thereby lessening the probability of internal delamination and package cracking. The cantilevered tie bars also permit a variety of die sizes to be used with the same lead frame design. Suitable configurations for cantilevered tie bars include, but are not limited to, U-shape, T-shape, and H-shape configurations.
    Type: Grant
    Filed: August 22, 1994
    Date of Patent: May 28, 1996
    Assignee: Motorola, Inc.
    Inventors: Tom R. Hollingsworth, Michael B. McShane