Patent ID: 6977213

Claim:
A method of manufacturing a solder bump on a semiconductor device, the method comprising: creating a bonding pad over a semiconductor substrate; placing a mask layer over the substrate and the bonding pad; forming an opening in the mask layer having a primary solder mold and at least one secondary solder mold joined with the primary mold, the opening exposing a portion of the bonding pad; filling the primary solder mold and the at least one secondary solder mold with solder material to form corresponding primary and at least one secondary solder columns in electrical contact with the bonding pad; removing the mask layer after the filling; and reflowing the solder material to form a primary solder bump from the solder material of the primary solder column and at least a portion of the solder material from the at least one secondary solder column through cohesion of the solder material from the at least one secondary solder column to the primary solder column.