to float i e is not supported by glass block 62 or its equivalent the deck plate 12 would displace the excess optical grade adhesive material 34 from the vias 30 to the second active surface 22 of the signal plate 18 the same would result if deck plate 12 is allowed to stabilize to the plug height h of spacers 28 during adhesive material curing displacement of the optical grade adhesive material 34 invariably contaminates the patterned ito and causes defective pixels in the lcd again referring to fig5 once the signal plate 18 and deck plate 12 are arranged in the assembly fixture 60 the optical grade adhesive material 34 is dispensed with an automated dispensing unit 63 the dispensing unit 63 contains a base plate 65 with a heating element 66 preferably a hot plate that preheats the assembly fixture 60 the signal plate 18 and the deck plate 12 preheating assists the flow of the optical grade adhesive material 34 the optical grade adhesive material 34 is dispensed in a predetermined pattern preferably a substantially u201c l u201d shaped pattern along two perimeter edges of deck plate 12 this technique prevents the occurrence of voids or air bubbles in the adhesive layer 34 between the signal plate 18 and deck plate 12 as previously described a void in adhesive material 34 causes incoming light to scatter during the lcd application more particularly adhesive material 34 is dispensed along perimeter 64 of the deck plate 12 capillary action allows the adhesive material 34 to flow between the deck plate 12 and the signal plate 18 by dispensing adhesive material.