Patents by Inventor Paul Siu-Chung Ho

Paul Siu-Chung Ho 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: 4017890
    Abstract: A method and resulting structure for forming narrow intermetallic stripes which will carry high currents on bodies such as semiconductors, integrated circuits, magnetic bubbles structures, etc. The conductive stripe includes aluminum or aluminum copper with at least one transition metal. The aluminum and at least one transition metal are deposited onto a supporting body at a very low pressure in a substantially oxygen-free high vacuum. The composite is then annealed at a temperature between about 200.degree. C and 525.degree. C for a time sufficient to form an aluminum and transition metal compound within the aluminum. The conductive stripes are then formed by masking and removing portions of the annealed metallic material. The resulting conductive stripes, which may be of a width of about 6.times.10.sup.-.sup.4 inches or less, have a significantly improved electromigration performance without significantly increasing resistance in the conductive stripe.
    Type: Grant
    Filed: October 24, 1975
    Date of Patent: April 12, 1977
    Assignee: International Business Machines Corporation
    Inventors: James Kent Howard, Paul Siu-Chung Ho