Sapphire is an expensive natural gem. The sapphire screen is made of ordinary gemstones. It is basically not blue, but has high hardness. Sapphire screen technology has actually been around for a long time, such as tag heuer watches, military vehicle glass,
Sapphire technology is used. The hardness of sapphire is only inferior to that of diamonds. The technology manufacturers can purify their elements and apply them on some transparent glass panels to achieve better hardness performance than traditional chemical glass. The big coke 3 uses a 5 inch sapphire screen. The Apple Corp is also only used by iPhone 5S's Home key, camera glass, and so on.
1, during the production process, the hockey size sapphire crystal is placed on the bottom of the disposable molybdenum tube, that is, the crucible. Then the compacted corundum, Crackle and the remaining sapphire materials in the crucible are added into the crucible, then the crucible is put into the furnace. In the melting pot, the crucible is placed on a small liquid helium cooling platform to ensure that the sapphire seeds do not melt too early. The furnace is sealed, in a vacuum, and heated to 2200 degrees Celsius until all the materials are melted together. In the next 16-1 days, these will pass through a series of cooling cycles, during which the sapphire is slowly crystallizing from the bottom to the top. Finally, it was a 115KG cylindrical industrial sapphire called "boule". [Apple also uses sapphire to protect iPhone's camera lens. On the new iPhone5S, sapphire has been used on TouchID fingerprint recognizer, and sapphire as screen material has been used more in high-end mobile phones and equipment prototypes. Compared to the current screen glass, such as Gorilla glass, even more expensive, but the sapphire is thinner, stronger, and more resistant.
2 application field domestic flagship model big coke 3, use 5 inch sapphire screen. Apple has been working with GT Advanced Technologies, a sapphire glass maker, to seek large expansion plants and expand capacity. Analysts from the first quarter of GT Advanced Technologies reported that their sapphire screens have begun mass production, and the first order has already been shipped. The sapphire screen may have been shipped to Apple's Chinese foundry (Foxconn), which is about 25% cheaper than the predicted price. But because iPhone6 did not use a sapphire screen, the company's stock fell 90% and is now declared bankrupt.