Patent ID: 6610558
Filing Date: 2003-08-26
Classification: H01L

Abstract:
A method for mounting a semiconductor chip on a substrate, the substrate having a chip-mounting region provided with a plurality of solder points, the semiconductor chip having a pad-mounting surface provided with a plurality of bonding pads, which are to be connected to corresponding ones of the solder points and which are disposed on the pad-mounting surface at locations that are offset from locations of the corresponding ones of the solder points on the chip-mounting region, said method comprising the steps of:forming pad-protecting bodies on the pad-mounting surface, each of which is made from an insulator material and covers at least a portion of a respective one of the bonding pads; forming a photoresist layer on the pad-mounting surface, wherein the pad-protecting bodies are embedded in the photoresist layer; forming access holes in the photoresist layer, each of which exposes a portion of a respective one of the pad-protecting bodies; removing the pad-protecting bodies from the pad-mounting surface via the access holes, thereby forming a plurality of contact receiving cavities in the photoresist layer at positions registered with the bonding pads on the pad-mounting surface; and forming a plurality of conductive bodies, each of which has an extension portion, and an anchor portion and a contact portion on opposite ends of the extension portion, the anchor portion filling a respective one of the contact receiving cavities and a respective one of the access holes and connecting electrically with a respective one of the bonding pads, the contact portion being formed on a surface of the photoresist layer opposite to the pad-mounting surface and being disposed at the location corresponding to a respective one of the solder points on the chip-mounting region of the substrate, the extension portion being formed on the surface of the photoresist layer and interconnecting the anchor and contact portions.