Semiconductor device and manufacturing method of the same

摘要

A first pad electrode layer (12) is disposed on a surface of a semiconductor substrate (10) with a first insulating film (11) between them. Then, a second insulating film (13) with a first via hole partially exposing a first pad electrode layer (12) is formed over the first pad electrode layer (12). A plug (14) is formed in the first via hole in the next process. The second pad electrode layer (15) connected to the plug (14) is disposed on the second insulating film (13). Next, a second via hole (102) reaching to the first pad electrode layer (13) from the backside of the semiconductor substrate (10) is formed. A penetrating electrode (20) and a second wiring layer (21) connected to the first pad electrode layer (13) at the bottom part of the second via hole (102) are disposed. Furthermore, a protecting layer (22) and a conductive terminal (23) are formed. Finally, the semiconductor substrate (10) is diced into the semiconductor chips.