Patents by Inventor Carlo Alberto Passagrilli

Carlo Alberto Passagrilli 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).

  • Process for improving the adhesion between metal and plastic in containment structures for electronic semiconductor devices
    Patent number: 6221696
    Abstract: A process comprises the following operations: forming a structure of metal elements with functions of support and electrical connection, these metal elements having a high degree of surface finish; fixing a chip of semiconductor material, containing active parts and contact pads, to an area of a metal element of the structure acting as a support; electrically connecting the contact pads of the chip to predetermined metal elements of the structure acting as terminal conductors; and incorporating in plastic the chip of semiconductor material and part of the structure of metal elements. To improve the adhesion between the structure and the plastic, at least part of the surface of the metal elements is roughened by irradiation with a laser light beam.
    Type: Grant
    Filed: September 16, 1999
    Date of Patent: April 24, 2001
    Assignee: STMicroelectronics S.r.l.
    Inventors: Paolo Crema, Carlo Alberto Passagrilli