Patent ID: 8658466

Claim:
A method for making a semiconductor package structure at least including: providing a first substrate having a first surface, a plurality of first conductive pads disposed on the first surface, a plurality of first bumps electrically connected with the first conductive pads and a plurality of first solder layers, wherein each of the first solder layers is formed on each of the first bumps and comprises a cone-shaped slot having an inner surface; flip chip bonding a second substrate to the first substrate, wherein the second substrate comprises a second surface, a plurality of second conductive pads disposed on the second surface, a plurality of second bumps electrically connected with the second conductive pads and a plurality of second solder layers, each of the second solder layers is formed on each of the second bumps and comprises an outer surface, and each of the second solder layers is a cone-shaped body; pressurizing and heating the second substrate to make each of the second solder layers coupled to each of the first solder layers, wherein each of the second solder layers is accommodated within each of the first solder layers, and the inner surface of each of the cone-shaped slots contacts against the outer surface of each of the second solder layers; and forming an encapsulant between the first substrate and the second substrate.