A display unit is constituted by a passive matrix of {HEAD ~ independently controllable pixels} characterized by {TAIL ~ an active area} of n rows and m columns of discrete pixels and a pixel border 
characterized by
A display unit is constituted by a passive matrix of { HEAD ~ independently controllable pixels } characterized by { TAIL ~ an active area } of n rows and m columns of discrete pixels and a pixel border
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH