Patents Assigned to Industrial Technology Industrial Research
  • Patent number: 6084301
    Abstract: A composite bump structure and methods of forming the composite bump structure. The composite bump structure comprises a polymer body of relatively low Young's Modulus compared to metals covered by a conductive metal coating formed at the input/output pads of an integrated circuit element or substrate. The composite bump is formed using material deposition, lithography, and etching techniques. A layer of soldering metal can be formed on the composite bumps if this is desired for subsequent processing. A base metal pad covering the integrated circuit element input/output pad can be used to provide added flexibility in location of the composite bump. The composite bump can be formed directly on the input/output pad or on the base metal pad.
    Type: Grant
    Filed: October 14, 1997
    Date of Patent: July 4, 2000
    Assignee: Industrial Technology Industrial Research
    Inventors: Shyh-Ming Chang, Yu-Chi Lee, Jwo-Huei Jou