{HEAD ~ The polysilicon layer} 32 is made of {TAIL ~ polysilicon} doped with impurity ions, for example 
is made of
{ HEAD ~ The polysilicon layer } 32 is made of { TAIL ~ polysilicon } doped with impurity ions , for example
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH