Mobile phones have become an indispensable and important part of modern people's lives. Mobile phones have also developed from the original non-TP screen to the black and white TP screen to the current color TP screen. At present, the curved screen of the mobile phone has become the mainstream of the mobile phone screen.
The common structure of mobile phone screen: cover glass + touch sensor layer + front panel (polarizer) + back panel (LCD screen).
The top glass of the first layer is cover glass, whose main component is silicon dioxide, which plays a role in protecting the internal structure of the mobile phone. The mobile phone cover glass on the market is mainly gorilla glass produced by Corning. The sapphire material replaces the glass material, and the watch uses sapphire material. The material is hard and first-class, and it has more advantages than glass in terms of scratch resistance, but sapphire still has technical disadvantages, such as its poor toughness and the transmission of visible light. The rate is less than 90%, which is easy to make the screen color cast.
The second layer is the touch sensor layer, which is mainly divided into resistive type and capacitive type, and its main function is to detect touch operations. At present, graphene is most likely to become the mainstream material for touch screens. Graphene is the thinnest and hardest nanomaterial known in the world. It is almost completely transparent, has extremely low resistivity, and has extremely fast electron migration, so it is expected to be used to develop thinner and faster conductive new materials. A generation of electronic components or transistors.
The third layer is the front panel, which is mainly used to install filters and generate images.
The fourth layer is the backplane, which is used to handle millions of thin film transistors.
With the rapid development of science and technology, the 3D glass cover of mobile phone has become the main force of mobile phone cover. The protective effect of the mobile phone cover on the mobile phone is: anti-drop, anti-scratch, waterproof and anti-fingerprint, etc.
