Patent ID: 8012864
Filing Date: 2011-09-06
Classification: H01L,H03H

Abstract:
1. A manufacturing method for semiconductor device, comprising: preparing a semiconductor substrate including a first face and a second face on a side opposite to the first face; forming a first electrode on the first face of the semiconductor substrate; forming a second electrode having a top face and a rear face on the first face of the semiconductor substrate; forming on the first face of the semiconductor substrate an interconnection electrically connected to the first electrode; electrically connecting the first electrode to the interconnection by forming an external connection terminal connected to the interconnection on the first face of the semiconductor substrate; forming a stress-absorbing layer between the semiconductor substrate and the external connection terminal; forming a groove portion having a bottom face including at least part of the rear face of the second electrode, on the second face of the semiconductor substrate; forming an insulating film on side wall of the groove portion; and forming in the groove portion a conductive portion electrically connecting an electronic element to the second electrode.