This method reduces the threshold voltage of {TAIL ~ the TFT driving circuit}, thereby increasing {HEAD ~ the driving current} 
This method reduces the threshold voltage of { TAIL ~ the TFT driving circuit } , thereby increasing { HEAD ~ the driving current }
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD