{HEAD ~ The etch stopping layer} 12 prevents a material formed under {TAIL ~ the etch stopping layer} 12 from being etched when etching the mold silicon oxide layer 14 
{ HEAD ~ The etch stopping layer } 12 prevents a material formed under { TAIL ~ the etch stopping layer } 12 from being etched when etching the mold silicon oxide layer 14
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH 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