Sapphire may replace glass as the material of mobile phone display

In the early morning hours of March 22, Beijing time, Eric Virey, an analyst at Yole Développement, a US market research company, said that industrial sapphire may replace glass and become the production material for future smartphone displays.

Industrial sapphire is a material used by military vehicles as transparent armor, but if this material becomes cheap enough, it can replace glass and become a manufacturing material for mobile phone displays. This means that if the phone falls accidentally, it will not break, even if it falls on the sidewalk of a concrete road.

Industrial sapphire is probably not cheaper than Corning's "Gorilla Glass", which is the material used to make displays for iPhones and other high-end smartphones. The price of a "Gorilla Glass" display is less than $ 3, while the sapphire display may be about $ 30.

But Warry pointed out that due to increased competition and technological improvements, the price of sapphire displays may fall below $ 20 within two years. Because the performance of sapphire is better than glass, such a price is sufficiently competitive.

In addition to diamonds, sapphire is stronger than any other natural material. It is three times harder than "Gorilla Glass" and about three times more scratch resistant. Apple currently uses sapphire to protect the iPhone 5 camera.

Warri said that major mobile phone manufacturers are considering replacing glass with sapphire. "I believe that some manufacturers will start testing water and release high-end smartphones using sapphire displays in 2013."

Compared with the pure use of sapphire, another option is to use other low-cost transparent materials and ultra-thin sapphire layer for lamination. This method can retain most of the performance advantages of sapphire, while the price is not far from glass.

American PV equipment supplier GT Advanced Technologies (hereinafter referred to as "GT") is developing a thinner sapphire layer than hair, which is much thinner than the one-millimeter thin glass currently used in mobile phones. At the same time, the company is also reducing sapphire production costs.

GT predicts that the price of the sapphire display may be only three to four times that of the "Gorilla Glass" display, and it will be further reduced in the future.

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