Patent ID: 6097087
Filing Date: 2000-08-01
Classification: H01L

Abstract:
A semiconductor package comprising:a semiconductor die comprising a face having a peripheral outline, and a plurality of die contacts comprising a plurality of reflowed first balls;a flex circuit attached to the face comprising a polymer substrate having a first side, a second side, and a plurality of first openings aligned with the reflowed first balls, a plurality of external contacts on the first side, and a plurality of conductors on the second side comprising a plurality of second openings aligned with the first openings and the reflowed first balls; anda plurality of rivet-like connections between the conductors and the die contacts, the rivet-like connections comprising a plurality of reflowed second balls in the first openings and the second openings comprising shoulder portions proximate to the second openings bonded to the conductors and portions bonded to the reflowed first balls.