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