1. Process layout? In the eyes of many people, the folding screen mobile phone is similar to the traditional flip phone, but they are completely two concepts. In the past, the flip phone had two independent screens connected by hinges, while the folding screen phone was a complete screen with much higher technical content. In order to fold without wrinkling, the battery, motherboard, camera and other components need to be redesigned to avoid interfering with the folding of the whole screen.
? 2. What is the screen material? The core technology of folding screen is screen material, which is more radical than curved screen. On the basis of curved organic light-emitting diodes, the folding screen further changes the original rigid protective glass into flexible materials, and the substrate and packaging materials of flexible organic light-emitting diodes adopt flexible materials. Flexible organic light-emitting diode screen uses multi-layer flexible plastic film to replace the glass layer in traditional OLED, which can be bent without damage. In order to achieve the effect of large curvature or even folding, the covering layer of flexible screen usually adopts polymer film. In addition to flexibility, this film also needs to have the characteristics of low thickness, high hardness, high temperature resistance and high light transmittance.
3. Hinge? Another difficulty of folding screen mobile phone lies in the hinge, that is, the MIM rotating shaft, in which the gear structure will ensure the reliability of folding and provide corresponding damping to ensure that the foldable mobile phone can operate at different folding angles. The durability of hinges is also a great knowledge. After the opening and closing wear of the mobile phone reaches a certain number of times, the hinge performance will also decline. Hinge design is not only related to the service life of the screen, but also determines the shape of the flexible screen mobile phone.
To sum up, the folding screen mobile phone, as the latest screen technology, represents the direction of future mobile phones, although there is still much room for optimization of the reliability of flexible screens and the service life of hinges.