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