In {TAIL ~ the above manufacturing method}, the n channel type {HEAD ~ TFT} having the second gate electrode is a TFT of the pixel portion 
In { TAIL ~ the above manufacturing method } , the n channel type { HEAD ~ TFT } having the second gate electrode is a TFT of the pixel portion
REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH