This ensures that only the certain polarized light is permitted to be {HEAD ~ incident} on {TAIL ~ the liquid crystal display panel} 2 
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This ensures that only the certain polarized light is permitted to be { HEAD ~ incident } on { TAIL ~ the liquid crystal display panel } 2
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH