Patents Represented by Attorney, Agent or Law Firm Lerner, David, Littenberg, Krumhholz & Mentlik, LLP
  • Methods for creating wear resistant contact edges
    Patent number: 6317974
    Abstract: A method of making a contact having a wear resistant edge by forming a photoresist layer on a copper clad polyimide composite structure, patterning the photoresist layer to expose a portion of the copper; etching the copper to form a contact and/or contact tabs having etched edges, and plating a wear resistant material on the etched edges. After the photoresist layer is stripped, the top portion of the contact and/or contact tabs are etched to height that is below the height of the wear resistant edge.
    Type: Grant
    Filed: October 8, 1998
    Date of Patent: November 20, 2001
    Assignee: Tessera, Inc.
    Inventor: Joseph Fjelstad