Patent ID: 7102219
Filing Date: 2006-09-05
Classification: H01L

Abstract:
1. A stack-type semiconductor device formed by stacking a plurality of semiconductor devices, at least an undermost semiconductor device among the plurality of semiconductor devices comprising: a semiconductor element having first through holes formed therein and a plurality of electrodes formed on a first surface of the semiconductor element, each of the electrodes having second through holes formed therein, the second through holes respectively connecting with the first through holes, the second through holes having inner wall surfaces; an insulating film formed on a region including the inner wall surfaces of the second through holes, the insulating film having third through holes inside the second through holes, respectively; a conductive layer which is electrically connected to the electrodes, and is provided from the first surface through inner walls of the first through holes to a second surface of the semiconductor element, which is opposite to the first surface; and a plurality of connecting portions provided on the conductive layer so that a distance between two connecting portions among the plurality of connecting portions is different from a distance between at least two electrodes among the plurality of electrodes, on at least one of the first and second surfaces.