Patent ID: 7484293

Claim:
A manufacturing method for a semiconductor package including a printed wiring board and an integrated circuit chip mounted on an obverse face of said printed wiring board, comprising: a step of preparing said printed wiring board; a step of preparing a plurality of bump terminals, each including an insulating core, having a flat face to be directed towards a reverse side of said printed wiring board, and a conductive film, formed on a surface aside from the flat face of said insulating core; and said step of preparing a plurality of bump terminals further comprising: a step of preparing a die having a plurality of recessed portions formed in a main face; a step of forming said conductive film on an internal surface of said recessed portions; and after forming said conductive film, a step of filling said recessed portions with an insulating material; a step of mounting said plurality of bump terminals on the reverse face of said printed wiring board, said step of mounting said plurality of bump terminals further comprising: a step of applying solder to the reverse face of said printed wiring board and to an end face of said conductive film that appears on a same plane as said flat face of said insulating core; after the soldering, a step of aligning the die and said printed wiring board so that a main face of the die is directed towards the reverse face of said printed wiring board; after the aligning of said die and said printed wiring board, a step of sequentially heating a solder for a predetermined period of time; after the solder, melted by the heating step, has solidified, a step of removing the die.