Semiconductor device

A semiconductor device comprising:

• a semiconductor substrate;
• a semiconductor integrated circuit formed on a front surface of the semiconductor substrate;
• a pad electrode disposed on the side of the front surface so as to be electrically connected to the semiconductor integrated circuit, the pad electrode having a top surface and a bottom surface opposite from the top surface, the pad electrode being disposed on the side of the front surface of the semiconductor substrate so that the bottom surface is closer to the front surface of the semiconductor substrate than the top surface;
• a capacitor electrode disposed on a back surface of the semiconductor substrate;
• an insulation film disposed on the capacitor electrode;
• and
• a wiring layer disposed on the insulation film and physically in direct contact with the bottom surface of the pad electrode,
• wherein the capacitor electrode, the insulation film and the wiring layer are configured to form a capacitor, and
• the capacitor electrode, the insulation film and the wiring layer extend from the back surface of the semiconductor substrate to a side surface of the semiconductor substrate so that the extended portions of the capacitor electrode, the insulation film and the wiring layer form an additional capacitance to the capacitor.