Multifunctional Curved Screenn-one Machine

1.Technical principle of curved screens

(I) Screen materials

Flexible substrate materials: The key to the curved screen is the use of flexible substrate materials. At present, the commonly used flexible substrate materials are polyimide (PI). PI materials have excellent high temperature resistance and can withstand high temperature treatment during the manufacturing process; at the same time, it has excellent flexibility, which allows the screen to be easily bent into various arcs, and can maintain good stability and mechanical properties during the bending process, and is not prone to cracking or deformation.

Application of organic light-emitting materials (OLED) in curved screens: The combination of OLED technology and curved screens is a perfect match. The self-luminous characteristics of OLED materials make it unnecessary to have a backlight, which makes the screen thinner and lighter, providing favorable conditions for bending. Moreover, OLED has an extremely fast response speed and can quickly switch screens. When displaying dynamic pictures on the curved screen, it can effectively reduce the phenomenon of ghosting, presenting users with clear and smooth visual effects. For example, Samsung's AMOLED screen is widely used on curved screen mobile phones. With its excellent color performance and high contrast, the display effect of curved screen mobile phones has reached a new height.

2. Manufacturing process​

Bending process: In the manufacturing process of curved screens, the bending process is crucial. One of the common methods is the hot bending process, which heats the screen to a certain plastic temperature, and then uses a mold to bend the screen into a predetermined curvature. This process requires precise control of parameters such as temperature, pressure and time to ensure the accuracy and consistency of the screen bending. For example, in the manufacturing of high-end TV curved screens, the hot bending process can achieve high-precision bending of large-size screens to meet consumers' demand for large-screen immersive experience. ​
Laminating technology: In order to ensure the display effect and stability of the curved screen, laminating technology is indispensable. In the manufacturing of curved screens, the flexible screen needs to be laminated with other components, such as the touch layer, cover glass, etc. At present, the commonly used laminating technologies are optical adhesive laminating (OCA) and water adhesive laminating (LOCA). OCA bonding has the advantages of simple operation and high efficiency, and can achieve good optical performance and bonding strength; LOCA bonding is used in some occasions where high bonding accuracy and sealing are required. It can fill the tiny gap between the screen and other components, improve the screen's waterproof and dustproof performance, and ensure that the display effect is not affected.

3. Product advantages of curved screens

(I) Visual effects

Wider field of view: The curved design of the curved screen can effectively expand the range of visible images. Taking curved TVs as an example, the actual visible area of ​​curved TVs is relatively larger than that of flat-screen TVs and curved TVs of the same size. This is because the edge of the curved screen is curved toward the viewer, so that when the viewer watches from different angles, the image at the edge of the screen can also be more clearly seen, reducing the visual blind spot, bringing users a wider field of view, and making them feel as if they are in the scene when watching movies, sports events and other content.

Enhanced stereoscopic and immersive feeling: The design of the curved screen brings the distance between each point on the screen and the viewer closer, thereby enhancing the stereoscopic feeling of the image. When users watch videos or play games, this stereoscopic feeling can create a more immersive visual experience, making users feel as if they are in the content. For example, when playing 3D games, the curved screen can make the scenes and characters in the game more vivid and realistic, enhancing the fun and attractiveness of the game.

Reduced visual fatigue: Compared with flat screens, curved screens can better adapt to the physiological structure of the human eye. When the human eye is watching a flat screen, it needs to constantly adjust the focal length of the eyeball to focus on the content at different positions of the screen. Long-term viewing can easily lead to visual fatigue. The curvature of the curved screen is similar to the curvature of the natural field of vision of the human eye. The movement of the eyeball is relatively small when watching, which makes the eyes more relaxed and can effectively reduce visual fatigue. It is suitable for users who watch the screen for a long time, such as e-sports players and film and television enthusiasts. ​
(II) Appearance design ​
Unique sense of fashion: The curved design of the curved screen breaks the monotony of the traditional flat screen and gives the product a unique appearance. Whether it is a mobile phone, TV or computer monitor, the addition of a curved screen makes it more outstanding in appearance, showing a sense of fashion and technology. For example, some of Huawei's curved screen mobile phones, with their elegant curved surface design, have become a model of the integration of fashion and technology, attracting many consumers who pursue personalization. ​
Integration with the overall design of the product: The curved screen can better integrate with the overall design of the product, enhancing the integrity and beauty of the product. In mobile phone design, the curved screen can make the transition between the mobile phone frame and the screen more natural, achieve a narrower frame effect, thereby increasing the screen-to-body ratio and making the front of the mobile phone look more concise and atmospheric. In TV design, the curved screen is combined with design elements such as metal body and ultra-thin frame to create a modern home art piece, which not only meets the user's demand for function, but also adds a unique charm to the home environment. ​
(III) User experience ​
Improving the grip (taking mobile phones as an example): For curved screen mobile phones, the curved surface design can better fit the palm. When the user holds the mobile phone, the curved surface of the edge of the mobile phone naturally fits the palm, increasing the contact area and making the grip more stable and comfortable. For example, Samsung's Galaxy Note series of curved screen mobile phones, through the carefully designed curved arc, allows users to easily control the mobile phone when operating with one hand, reducing the risk of the mobile phone slipping and improving the user experience. ​
The development and application of anti-mistouch technology: Although the curved screen has an advantage in grip, it also has the problem of easy mistouch in the early days. With the development of technology, mobile phone manufacturers have developed various anti-mistouch technologies. For example, through intelligent algorithms to identify the touch actions of palms and fingers, when it is detected that the edge of the palm accidentally touches the edge of the screen, the system will not perform the corresponding operation, thereby effectively avoiding mistouch. In addition, by adjusting the touch sensitivity of the screen edge, the possibility of accidental touches can be reduced while ensuring normal operation, allowing users to use curved-screen phones with greater confidence.