This is a so called backlight to enhance {HEAD ~ the contrast} of the display on {TAIL ~ the liquid crystal display section} 2 
on
This is a so called backlight to enhance { HEAD ~ the contrast } of the display on { TAIL ~ the liquid crystal display section } 2
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH