Checkout more info about this NeoDisplay (including the a wiring diagram) on:
http://michaelteeuw.nl/post/146218632142/the-neodisplay

The case is designed to be printed without any supports (when the front of the case is resting on your build plate). It has some steep overhangs, but since these are inside of the case, the end result of your NeoDisplay looks beautiful. I used ColorFabb’s XT Co Polyester on my Lulzbot Mini for a beautiful gloss and an extremely strong case.