{TAIL ~ Display pixels} and sensor pixels of {HEAD ~ an EL display} each have an EL element, and the sensor pixels each have a diode 
{ TAIL ~ Display pixels } and sensor pixels of { HEAD ~ an EL display } each have an EL element , and the sensor pixels each have a diode
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH