Patent ID: 7122457

Claim:
A semiconductor chip production method, comprising the steps of: forming a front side recess in a semiconductor substrate having a front surface and a rear surface and including a functional device provided in the front surface thereof, the front side recess extending from the front surface of the semiconductor substrate along a thickness of the semiconductor substrate; depositing a metal material in the front side recess to form a front side electrode electrically connected to the functional device; removing a rear surface portion of the semiconductor substrate to reduce the thickness of the semiconductor substrate to a predetermined thickness which is greater than a depth of the front side recess; forming a rear side recess communicating with the front side recess in the rear surface of the semiconductor substrate after the thickness reducing step to form a continuous through-hole; and depositing a metal material in the rear side recess to form a rear side electrode electrically connected to the front side electrode for formation of a through-electrode extending through the semiconductor substrate.