Photosensitive material is provided over {HEAD ~ a portion} of the insulating material layer which overlies {TAIL ~ a portion} of the second well region 
Photosensitive material is provided over { HEAD ~ a portion } of the insulating material layer which overlies { TAIL ~ a portion } of the second well region
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH