Patents Examined by D. Marv Collins
  • Patent number: 6118179
    Abstract: A semiconductor component includes a substrate, bonding pads on the substrate, and external contacts bonded to the bonding pads. Exemplary external contacts include solder balls, solder bumps, solder columns, TAB bumps and stud bumps. Preferably the external contacts are arranged in a dense array, such as a ball grid array (BGA), or fine ball grid array (FBGA). The component also includes a polymer support member configured to strengthen the external contacts, absorb forces applied to the external contacts, and prevent separation of the external contacts from the bonding pads. In a first embodiment, the polymer support member comprises a cured polymer layer on the substrate, which encompasses the base portions of the external contacts. In a second embodiment, the polymer support member comprises support rings which encompass the base portions of the external contacts.
    Type: Grant
    Filed: August 27, 1999
    Date of Patent: September 12, 2000
    Assignee: Micron Technology, Inc.
    Inventors: Warren M. Farnworth, Alan G. Wood
  • Patent number: 6048749
    Abstract: A method of fabricating a semiconductor device includes the steps of protecting a front surface of a semiconductor substrate by an adhesive medium, grinding a rear surface of the semiconductor substrate in a state that the front surface is protected by the adhesive medium, removing the adhesive medium from the rear surface, and heating the semiconductor substrate, after the step of removing, to a temperature higher than a thermal decomposition temperature of an adhesive provided on the adhesive medium.
    Type: Grant
    Filed: July 29, 1999
    Date of Patent: April 11, 2000
    Assignee: Fujitsu Limited
    Inventor: Yutaka Yamada