Patent ID: 8728866

Claim:
A method for manufacturing a semiconductor device comprising: forming a circuit pattern and a first metal film on a first major surface of a body wafer having the first major surface and a second major surface facing the first major surface; forming a through-hole penetrating the body wafer from the second major surface of the body wafer and reaching the first metal film; forming a second metal film on a part of the second major surface of the body wafer, on an inner wall of the through-hole, and on the first metal film exposed in the through-hole; forming a recess on a first major surface of a lid wafer having the first major surface of the lid wafer and a second major surface facing the first major surface of the lid wafer; forming a third metal film on the first major surface, including inside the recess, of the lid wafer; with the recess facing the circuit pattern, and the first metal film contacting the third metal film, joining the lid wafer to the body wafer; and dicing the joined body wafer and lid wafer along the through-hole.