Patent ID: 7821121
Filing Date: 2010-10-26
Classification: H01L,H05K

Abstract:
1. A semiconductor device, comprising: a semiconductor element fixedly mounted on a substrate having a plurality of through holes provide on at least one edge of the substrate, wherein an electrode of the semiconductor element is to be electrically connected to a wiring pattern via each through hole, wherein each through hole has, on a surface of the substrate, an exposed through hole land of a width of 0.02 mm or more, wherein, for each through hole, a width X of the through hole land is given by: where A is a through hole diameter, B is a distance between through hole lands, and P is a through hole pitch, wherein, for each through hole, the semiconductor element is coated with a resin that extends to an edge of the through hole land without covering the exposed through hole land and without covering the through hole, and wherein, for each through hole, the resin is shaped using a mold with a convex portion that presses the through hole at an area extending over the width of the exposed through hole land, so that no resin flows into the through hole during processing of the resin.