WelshBloke
Lifer
Unbreakable displays is my 1st thought. That would mean you wounldn't need a case on your phone anymore. Samsung already make plastic phones that stand up to a beating with the weakest point being the display. Plastic is already pretty strong.
Yeah its getting something scratchproof on the outside of the screen thats the problem.
Mind you with a less rigid screen there may be less chance of it scratching in the first place.