So, I originally asked what the biggest VFD available was, and the answers were along the lines of: Noritake makes 256x128 but its not avaiable on the market. The 256x64 can be found on Ebay. You can custom order any size you want, but it'll cost quite a few 'chings'. There are also VFDs that are in expensive equipement and other things like large billboards, but that goes beyond the scope of this question. So, why did I ask? A few weeks ago I found a very obscure listing that had a graphical VFD for sale. It is a NOS item that was intentionally for marketting that never went through. There were no specs on this thing, so I dug around and found them. The digging was intense, including numerous long distance phone calls, but eventually I scored. Say hello to the Futaba GP1002C09A, a 320x240 VFD that requires 5V logic and 135VDC driving voltage: This thing is huge and heavy. My camera does not do it justice. Its 7"x6" (or 175mm x 150mm). Part of the sale included a 120VAC to 135VDC converter (whew). The above picture is of a 8x8 pixel square test pattern using a 16F877A PIC. I thought I would include the cigarette box as size refference. A better test pattern for showing the graphics. Again, the camera washes out the brightness of the VFD and the picture doesnt do this thing justice. The interface is really easy. A little too easy. Theres no text page, so I will be working on a firmware solution and build my own. The tiled image I used is 64x80 pixels. IRL, it looks amazing.