In an annealing step by laser light illumination, {HEAD ~ laser light} is selectively applied to {TAIL ~ a semiconductor thin film} by partially masking it 
is selectively applied to
In an annealing step by laser light illumination , { HEAD ~ laser light } is selectively applied to { TAIL ~ a semiconductor thin film } by partially masking it
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH