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