The screen ratio of 18: 9 full-screen mobile phones is generally greater than 80%, and the edge of the screen will be very close to the body of the mobile phone. If the traditional right-angle cutting scheme is used, there will be nowhere to place the relevant modules and components. At the same time, the close proximity of the screen to the body will make the screen more impacted by the fall, which may lead to broken screen. Therefore, in order to reduce the possibility of broken screen and reserve component space, it is very necessary to use special-shaped cutting for screen processing.
"Special-shaped cutting" performs R-angle cutting, U-shaped slotted cutting, C-angle cutting, etc. on the screen according to different needs. Its purpose is mainly twofold: on the one hand, it is necessary to do C-angle or R-angle cutting at the four corners of the screen, and any edge reinforcement with buffer foam to prevent the screen from being broken. On the other hand, you need to make a U-shaped cut at the top of the screen to reserve space for the front camera, sensors and other components.
The current special-shaped cutting methods include: cutter wheel cutting, laser cutting, and CNC grinding as a temporary alternative. Since domestic mobile phone manufacturers cannot obtain OLED production capacity, most full screens still use LCD solutions. The special-shaped cutting solutions for LCD screens are cutter wheel cutting and laser cutting.
"Abnormal screen" is the best comprehensive screen solution at the moment
In fact, in the supply chain, the professional name of "Alien Screen" is also called Notch Screen. At present, the lens supplier cannot make a solution for the off-screen lens, and 3D scanning is a combination of multiple lenses. The front space of the mobile phone is limited. All the screens are placed. Then there is no room for the front camera and light sensor. In addition, there are also big problems with the placement of the front camera. At present, the front cameras of high-end mobile phones are all above 8M, even 16M. The normal module size of the 8M AF camera is 8.5x8.5mm.
Of course, since the earpiece occupies a large area, miniaturization of the earpiece can solve the problem of small front space of the full screen. For example, the bone conduction technology used by Sharp and the piezoelectric ceramics used by Xiaomi are all good directions. However, neither bone conduction nor piezoelectric ceramics are good enough in terms of bass performance, and their high cost restrict their development.
The placement of these components is a headache for mobile phone manufacturers. Without solving these problems, it cannot be called a full screen. Even if it is barely achieved, the manufacturing cost of mobile phones will be very high at the current technical level.
Unless you make a lens under the screen, you can get rid of "alien". Under the current technical limitations, the special-shaped screen is the best solution for the current comprehensive screen.