Patent ID: 6420788
Filing Date: 2002-07-16
Classification: H01L

Abstract:
A semiconductor device adapted for mounting on a substrate, the substrate having a chip-mounting region provided with a plurality of solder points, said semiconductor device comprising:a semiconductor chip having a pad-mounting surface provided with a plurality of bonding pads which are disposed on said pad-mounting surface at locations that are offset from locations of corresponding ones of the solder points on the chip-mounting region; a photoresist layer formed on said pad-mounting surface of said semiconductor chip, said photoresist layer being formed with a plurality of contact-receiving cavities adjacent to and registered with said bonding pads on said pad-mounting surface, and a plurality of access holes for access to said contact-receiving cavities, said access holes being narrower than said contact-receiving cavities, each access hole being confined by a first wall that flares outwardly from a corresponding contact-receiving cavity to define a neck and said corresponding contact-receiving cavity being confined by a second wall that cooperates with said first wall to define a shoulder connected to said neck; and a plurality of conductive bodies, each of which has an extension portion, an anchor portion, and a contact portion on opposite ends of said extension portion, said anchor portion connecting electrically with a respective one of said bonding pads by filling a respective one of said contact-receiving cavities to conform to said shoulder and a respective one of said access holes to conform to said neck to form a secure means that inhibits the peeling of said anchor portion from the respective one of said bonding pads, said contact portion being formed on a surface of said photoresist layer opposite to said pad-mounting surface and being disposed at a location corresponding to that of a respective one of the solder points on the chip-mounting region of the substrate, said extension portion being formed on said surface of said photoresist layer and interconnecting said anchor and contact portions.