Production of e.g. multilayer metal plastic laminate forming lead frame, includes stamping processes raising contact surfaces and adhesive dams, advancing miniaturization by replacement of ball grid arrays

摘要

A metal foil (1) is formed by stamping and/or deep drawing of at least one metal contact surface (3, 4). The metal foil is laminated with plastic film (2), holding the contact surface profile closely. In a similar alternative, the plastic film is first laminated to the metal foil before stamping. More films and foils may be included. An Independent claim is also included for the metal/plastic laminate and corresponding lead- or support frame made as described. Preferred features: The metal contact surface is re-stamped. Following lamination, the metal contact surface has a profile height (h) of 20-50 microns . There is at least one depression (7) in the foil, to make contact with components. There is a further depression (5) at the edge of the contact surface and/or at least one more (6) in the region where lamination will later take place.