Patent ID: 7368321

Claim:
A method for manufacturing a semiconductor package, comprising: bonding a first substrate comprising a functional element, a first wiring, and a pad over a first side of a semiconductor base material, and a second substrate using a sealing material together so that the functional element is positioned therebetween; forming a mask having a predetermined pattern on a second side of the semiconductor base material; etching the semiconductor base material via the mask at a position corresponding to the pad to define a hole that reaches the pad, and to define a groove that reaches the sealing material surrounding the functional element, the first wiring, and the pad; etching the sealing material at the bottom of the groove to expose the second substrate; forming an insulating film on an inside of the hole and the groove; removing the insulating film that is provided at the bottom of the hole by etching; filling a first conductive material in the hole to form a through-hole interconnection; and cutting a the first substrate and the second substrate along an inner wall of the through-hole.