Help driving a VFD Display
You need to make a electrical connection between the filament, grid and phosphorus coated segment.  This allows electrons to "fly" off the filament (cathode), "hit" the phosphorus coated segment (anode) and make the segment light up.


Your particular display uses the same lines for similar segments.  It also has separate grids for each digit.  So you need to multiplex your display in a more complex manner.


These images are from the same Norikate pdf as listed in the above comments.