A semiconductor wafer comprises substantially isolated chips, and the isolated chip comprises {TAIL ~ a main area} 10 defined by first scribe lines 12 extending in a first direction and second scribe lines 14 extending in {HEAD ~ a second direction} 
A semiconductor wafer comprises substantially isolated chips , and the isolated chip comprises { TAIL ~ a main area } 10 defined by first scribe lines 12 extending in a first direction and second scribe lines 14 extending in { HEAD ~ a second direction }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD