通常手机屏幕由4层组成。每一层的作用也不一样。最上面的一层玻璃为盖板玻璃,大多数用的是蓝宝石材料。蓝宝石的主要成分为氧化铝,是一种单晶材料,其莫氏硬度(表示矿物硬度的一种标准)高达9,是除金刚石(钻石)之外,最为坚硬的一种材质,因此防刮花效果好。但蓝宝石材料也有不足,比如韧性比较差,通俗地讲就是材料抵御裂纹扩展的能力不好。近几年来,蓝宝 Usually the phone screen consists of 4 layers. The role of each layer is not the same. The top layer of glass for the cover glass, most of the use of sapphire material. The main component of sapphire is alumina. It is a monocrystalline material whose Mohs hardness (a standard for mineral hardness) is as high as 9 and is the hardest material except diamond (diamond), so scratch resistant Flower effect is good. However, sapphire materials also have shortcomings, such as toughness is relatively poor, in layman’s terms the ability of the material to resist crack propagation is not good. In recent years, Sapphire