The phase difference, which the reflective liquid crystal display device provides to the first diffracted light emitted from {HEAD ~ a point} on the optical axis of the reflective liquid crystal display device and cast into the first region, can be greater than the phase difference which the reflective liquid crystal display device provides to the second diffracted light emitted from a point on the optical axis of the reflective liquid crystal display device and cast into {TAIL ~ the second region} 
The phase difference , which the reflective liquid crystal display device provides to the first diffracted light emitted from { HEAD ~ a point } on the optical axis of the reflective liquid crystal display device and cast into the first region , can be greater than the phase difference which the reflective liquid crystal display device provides to the second diffracted light emitted from a point on the optical axis of the reflective liquid crystal display device and cast into { TAIL ~ the second region }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL