Patent ID: 7514286

Claim:
A method for forming individual semiconductor devices comprising: preparing a semiconductor substrate having, a first face having, a first region and a second region surrounding said first region with a scribe line being formed therein, and a second face having, a third region being opposed to said first face and corresponding to said first region, and a fourth region surrounding said third region and corresponding to said second region; forming a first groove and a third groove of a prescribed death in the semiconductor substrate simultaneously, wherein the first groove is formed in said fourth region opposing said scribe line and the first groove has a bottom portion, and the third groove is formed in said third region; forming a second groove in the semiconductor substrate in said first region, the second groove having a bottom portion that is the semiconductor substrate; removing the bottom portion of the semiconductor substrate of the second groove within the second groove, so that the second groove passes through to said third region of the semiconductor substrate; and cutting the semiconductor substrate along the scribe line, so that the scribe line passes through to the bottom portion of the first groove having the prescribed depth, after said removing the bottom portion of the second groove, wherein said forming the second groove is performed after said forming the first groove.