Patent ID: 7122897
Filing Date: 2006-10-17
Classification: H01L

Abstract:
1. A semiconductor device, comprising: a semiconductor chip; a wiring layer formed on the semiconductor chip; a column electrode connected at a first end to the wiring layer; and an encapsulation resin formed on the semiconductor chip; wherein the column electrode is provided with a second end, opposite to the first end, projecting from the encapsulation resin, and an external connection member is connected to the column electrode at the second end so that the external connection member is separate from a surface of the encapsulation resin by a clearance between the encapsulation resin and the external connection member, wherein a cross-sectional area of the column electrode in contact at the second end with the external connection member is large than a cross-sectional area of the column electrode in contact at the first end with the wiring layer.