The a/r coating you are referring to has to be applied in a dust free environment and is applied by machines that are very expensive. The machines that I have seen are only made to accomodate round objects up to 85 mm or so. The lens is spun when the coating is applied (this could be done other ways on different equipment) and a series of coatings are usually involved in the process. It comes in multiple colors - blue, green, and ive seen some orange ones too. No coating lab is going to attempt to coat one of these screens :-( I would love for someone to prove me wrong though.

Sean