removing a part of an amorphous silicon film formed on a substrate having {HEAD ~ an insulating surface} to form {TAIL ~ a region} for introducing metal elements that promote crystallization of silicon 
to form
removing a part of an amorphous silicon film formed on a substrate having { HEAD ~ an insulating surface } to form { TAIL ~ a region } for introducing metal elements that promote crystallization of silicon
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH