Patent ID: 7179685
Filing Date: 2007-02-20
Classification: H01L

Abstract:
1. A process for fabricating a chip having a collar portion, comprising the steps of: providing a semiconductor wafer having a front surface, and having a back surface opposite the front surface; forming a first plurality of mutually parallel recess portions in the back surface of the semiconductor wafer, each of the first recess portions having a first width; forming a second plurality of mutually parallel recess portions in the back surface of the semiconductor wafer, the second plurality of recess portions being formed in a direction transverse to the first plurality of recess portions and each of the second recess portions having a second width; and cutting the semiconductor substrate from the back side with a third width along respective longitudinal center lines of the first and second plurality of recess portions to form a plurality of chips each having a collar portion which includes a portion of the front surface of the semiconductor substrate, wherein both the first and second widths are larger than the third width.