Patent ID: 6335271
Filing Date: 2002-01-01
Classification: H01L,H05K

Abstract:
A method of manufacturing a semiconductor device having bump electrodes comprising the steps of:(a) 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; (b) filling said concave parts of said jig with a solder paste material; (c) disposing said substrate on said jig in such a manner that said one surface of substrate contacts with said one surface of said jig; (d) 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 (e) detaching said one surface of substrate from said one surface of said jig by surface tension of said solder paste material in step (d), thereby to form a space between said one surface of said substrate and said one surface of said jig in a thickness direction of said substrate.