Samsung acquires 7.4 percent of Gorilla Glass maker Corning, signs long-term supply deal

Samsung certainly know how to not keep all their eggs in one basket.... Apple certainly knows this as they try to move away from fuelling Samsungs revenue lines... There are always sapphire displays as a alternative.. 

http://www.engadget.com/2013/10/23/samsung-acquires-7-4-percent-of-gorilla-glass-maker-corning/

Why next iPhone screen could be made of SAPPHIRE

http://www.theregister.co.uk/2013/05/02/gorilla_glass_ipads/