Patent ID: 8017448
Filing Date: 2011-09-13
Classification: H01L

Abstract:
1. A method for manufacturing a semiconductor device, the method comprising: a) forming electrode pads to be electrically connected to electrodes of semiconductor chips on a surface of a package substrate and forming external connection pads electrically connected to the electrode pads on a back surface of the package substrate; b) laminating a metal film on the surface of the package substrate, forming a surface mask having a predetermined pattern on a surface of the metal film, the pattern being such that a plurality of pillar-shaped surface-side terminals, whose one ends are correspondingly electrically connected to the electrode pads, is formed on a peripheral portion on the surface of the package substrate, and etching the metal film to a predetermined depth using the surface mask to form pillar-shaped portions whose side surfaces are narrowed; c) repeating: until the package substrate is exposed, and removing the surface mask and the side surface mask after the package substrate is exposed, to form pillar-shaped surface-side terminals having a plurality of protruded rims formed over entire peripheries of their side surfaces along a peripheral direction; d) placing the semiconductor chips at a center of the surface of the package substrate and electrically connecting the electrodes to the electrode pads; and e) coating the surface of the package substrate with liquid resin so that the other ends of the surface-side terminals are exposed and the semiconductor chips are coated to seal the semiconductor chips with the liquid resin.