Patent ID: 6653219
Filing Date: 2003-11-25
Classification: H01L

Abstract:
A method of manufacturing a semiconductor package having bump electrodes comprising the steps of:(a) providing a semiconductor chip having a plurality of semiconductor elements and terminal pads formed on a main surface thereof; (b) providing a jig for forming said bump electrodes and a substrate, said jig having concave parts provided on one surface thereof, each of concave parts being defined by an upper surface corresponding to said one surface, a bottom surface positioned at a relatively lower level than said upper surface and a side surface extending from said upper surface to said bottom surface, said substrate having electrode pads arranged on one surface thereof, each of said electrode pads having a size which is smaller than an opening of each of concave parts in a plane view; (c) mounting said semiconductor chip on said substrate such that said main surface of said semiconductor chip faces the opposing surface of said substrate; (d) filling said concave parts of said jig with a solder paste material; (e) disposing said substrate with said semiconductor chip on said jig in such a manner that said one surface of said substrate contacts said one surface of said jig; and (f) subjecting said solder paste material in said concave parts of said jig to a heat treatment and melting said solder paste material under the condition in that said electrode pads are embedded in said concave parts of said jig respectively and are in contact with said solder paste material, thereby to form bump electrodes on said electrode pads of said substrate and to form said semiconductor package to be mounted on a printed circuit board by said bump electrodes.