As depicted in FIG 4B, {HEAD ~ the exposed surface} of substrate 116 is coated with a silicon nitride layer, with or without {TAIL ~ an underlying silicon dioxide layer}, to produce an insulating layer 404 
is coated with
As depicted in FIG 4B , { HEAD ~ the exposed surface } of substrate 116 is coated with a silicon nitride layer , with or without { TAIL ~ an underlying silicon dioxide layer } , to produce an insulating layer 404
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL REL OTH OTH OTH OTH OTH OTH REL OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH