In {TAIL ~ the present invention}, {HEAD ~ the current mirror circuit} has at least two thin film transistors 
In
In { TAIL ~ the present invention } , { HEAD ~ the current mirror circuit } has at least two thin film transistors
REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH