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