Patents by Inventor William L. Buchanan, Jr.

William L. Buchanan, Jr. 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).

  • Field shields for Schottky barrier devices
    Patent number: H40
    Abstract: The present invention relates to an improved Schottky barrier device wherein the leakage current present in the reverse bias mode attributed to the presence of an electric field at the Schottky barrier (18) is significantly reduced by the inclusion of one or more field shields (22), P.sup.+ -type diffusions located under the metal anode (16) of the Schottky barrier device at the Schottky barrier (18). The P.sup.+ -type field shields, which are disposed in a pattern on the surface of the Schottky barrier, reduce the surface electric field present, thereby significantly reducing the leakage current related thereto.
    Type: Grant
    Filed: July 18, 1984
    Date of Patent: April 1, 1986
    Assignee: AT&T Bell Laboratories
    Inventors: William L. Buchanan, Jr., James E. Kohl, Robert S. Scott, Yiu-Huen Wong