{HEAD ~ The display apparatus} 22, wherein {TAIL ~ said oxysulfide} is yttrium oxysulfide, and said luminescent center substance is europium 
{ HEAD ~ The display apparatus } 22 , wherein { TAIL ~ said oxysulfide } is yttrium oxysulfide , and said luminescent center substance is europium
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH