A third array of bitlines and {HEAD ~ channel regions} is formed in {TAIL ~ the second thin film polysilicon layer} 
A third array of bitlines and { HEAD ~ channel regions } is formed in { TAIL ~ the second thin film polysilicon layer }
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL