An article I saw yesterday, was about a product that Corning developed back in the early 60s. A very thin glass that was tough, and scratch proof, it had sat for decades waiting for an application. Now, a lot of the LCD manufacturers are starting to order it for big screen TVs to reduce the weight and thickness of their products. It is also reported being used in touch screen applications. Corning would confirm or deny if it was being used in the iPad or iPhone. There is also a glass available that is flexible and thin as a sheet of paper.