Patents by Inventor Rajenda Pendse

Rajenda Pendse 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: 5046657
    Abstract: A tape automated bonding structure (10) includes a copper flexible tape (12) with a plurality of conductive leads (14) having tips (16) arranged in a generally rectangular pattern corresponding to gold bumped contacts (18) on semiconductor die (20). The tips (16) of the conductive leads (14) are configured as bumps extending from the remainder of each conductive lead (14). The tips (16) of the conductive leads (14) are gang bonded to the bumped contacts (18) on the semiconductor die (20) by positioning the tips (16) in registration over each bumped contact and applying heat and pressure to urge the tips (16) and the bumped contacts together, thus forming a thermocompression bond. The harder copper tips (16) penetrate into the gold bumped contacts. The bumped contacts (18) and the remainder of the tips (16) that has not penetrated into the contacts (18) space the conductive leads (14) above surface (22) of the semiconductor die (20).
    Type: Grant
    Filed: January 5, 1990
    Date of Patent: September 10, 1991
    Assignee: National Semiconductor Corporation
    Inventors: Venkat Iyer, Jagdish Belani, Hem P. Takiar, Rajenda Pendse