A light guide plate includes {HEAD ~ a body} having {TAIL ~ a bottom surface} and a light output surface opposite to the bottom surface 
A light guide plate includes { HEAD ~ a body } having { TAIL ~ a bottom surface } and a light output surface opposite to the bottom surface
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH