Patent ID: 7528476
Filing Date: 2009-05-05
Classification: H01L

Abstract:
1. A semiconductor device comprising: a semiconductor substrate having an active surface and a back surface; an integrated circuit formed on the active surface; a feedthrough electrode penetrating the semiconductor substrate, having a first electrode portion, and projecting from the active surface and the back surface; a first resin layer formed on the active surface, having a thickness greater than a height of the first electrode portion of the feedthrough electrode that projects from the active surface, and having an opening portion for exposing at least a portion of the first electrode portion of the feedthrough electrode, the opening portion being tapered in which the opening portion has an inner diameter which becomes narrower towards the first electrode portion; a wiring layer which is formed on the first resin layer so as to be smoothly formed along the taper of the opening portion, and which is connected to the feedthrough electrode through the opening portion; and an external connecting terminal connected to the wiring layer.