What is sapphire screen

First of all, sapphire is a kind of gemstone, which exists in nature in different forms and colors. Red sapphires are often called "rubies", and blue sapphires are usually processed into jewelry. However, there are some sapphires that are transparent, and this type of sapphire can be used on smart phone displays.

Sapphire is currently one of the hardest substances on earth. Its molar hardness value is 9 (the highest molar hardness value is 10), which is second only to diamond hardness (10), which means that there are only diamonds with the same hardness as diamonds. The substance can "injure" the sapphire. Therefore, unless you have a diamond in your pocket, the sapphire display phone in your pocket will not suffer any scratches after months of use.

Although sapphire is indestructible, we know that harder things will be more brittle, which means that in the future, when a mobile phone with a sapphire glass display is dropped on the floor, the screen may still be broken.

We all know that the molar hardness value of sapphire is 9, while the molar hardness value of glass is 5, and the fracture toughness value of the former is 2.3MPa√m, which is almost 3 times that of Corning Gorilla Glass. In addition, sapphire glass is even better in terms of elasticity and hardness.