Because the protective sheet is not cut by dicing, {TAIL ~ no scraps} of the protective sheet is produced, thereby preventing contamination to {HEAD ~ the chips} 
Because the protective sheet is not cut by dicing , { TAIL ~ no scraps } of the protective sheet is produced , thereby preventing contamination to { HEAD ~ the chips }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD