After {HEAD ~ deposition} of a silicon nitride layer and {TAIL ~ an insulation glass layer} on a substrate coating semiconductor devices, the contact windows are etched 
of
After { HEAD ~ deposition } of a silicon nitride layer and { TAIL ~ an insulation glass layer } on a substrate coating semiconductor devices , the contact windows are etched
OTH HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH