In {TAIL ~ one embodiment}, the display unit constitutes {HEAD ~ a part} of a portable electronic device 
In { TAIL ~ one embodiment } , the display unit constitutes { HEAD ~ a part } of a portable electronic device
OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH