Patent ID: 8664773

Claim:
A manufacturing method for a mounting structure of a semiconductor package component, comprising: mounting the semiconductor package component on a substrate in such a manner that an electrode of the substrate and an electrode of the semiconductor package component are brought into contact with each other through an applied solder; applying a first adhesive with viscosity η 1 and a thixotropy index T 1 on a part of the substrate, which is placed a periphery part of the semiconductor package component; applying a second adhesive with viscosity η 2 and a thixotropy index T 2 on the first adhesive, the second adhesive sitting on the periphery part of the semiconductor package component; and allowing the applied solder to go through reflow treatment and curing the first and second adhesives, wherein the first and second adhesives satisfy 30≦η 2 ≦η 1 ≦300 (Pa·s) and 3≦T 2 ≦T 1 ≦7, a sectional area S 1 of a cured first adhesive and a sectional area S 2 of a cured second adhesive with respect to a direction perpendicular to a mounting surface of the substrate satisfy S 1 ≦S 2 , and a difference between a solubility parameter P 1 of the first adhesive and a solubility parameter P 2 of the second adhesive is 1.4 or less.