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