Why is the sapphire screen so tall?

Why is the sapphire screen so tall?

REVIEW: Is the sapphire screen blue? No, sapphire screens are made by purifying ordinary gems. They are basically not blue. Why is the sapphire screen tall?

Sapphire technology has been used for military and luxury watches for a while, and the Apple 5s home button and camera also use sapphire. The hardness of sapphire is very high, second only to diamonds, and Mohs hardness is rumored to be as high as 9, the disadvantage is that it is too brittle and it is very fragile and costly. The liquid crystal panel needs a high-strength glass panel with a certain strength to ensure its own shape and share more external pressure. The difference between the sapphire placed on the panel and the ordinary glass substrate is hardness.

The biggest advantage of the sapphire screen is scratch resistance, not drop resistance, so the screen will still be broken.

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