Alternatively, the spacers are formed in light shielding regions of {HEAD ~ the pixel array} in {TAIL ~ a width} smaller than the width of the light shielding regions 
in
Alternatively , the spacers are formed in light shielding regions of { HEAD ~ the pixel array } in { TAIL ~ a width } smaller than the width of the light shielding regions
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH