Patent ID: 6943056

Claim:
A method for manufacturing semiconductor devices, comprising the steps of: adhering a support board to a rear surface of a substrate proper which has a plurality of circuit element parts with prescribed functions formed on a circuit forming plane on an obverse surface thereof; forming first groove portions, which reach the support board, on at least one of peripheral portions of said circuit element parts of said substrate proper and prescribed portions in said circuit element parts; forming holes in said first groove portions by using an insulating material in such a manner that said support board is exposed from a bottom of each of said holes; forming metal wiring patterns which extend from electrode portions formed in said circuit element parts to at least parts of inner walls of said holes; removing a prescribed amount of the support board at the bottom of each of said holes: filling a conductive material into said holes to form penetration electrodes in such a manner that the conductive material protrudes from said circuit forming plane; forming second groove portions, which reach the support board, in the peripheral portions of said circuit element parts; and removing said support board thereby to separate said substrate proper and said circuit element parts into a plurality of semiconductor devices.