I. Introduction
Capacitive touch screen is the core interaction component of modern smart phones, tablet computers and other electronic devices, and its performance directly affects the user experience. With the continuous development of technology, the surface treatment technology of capacitive touch screen is also improving to meet the needs of users for higher definition, stronger durability and better touch experience.
Two, the basic structure and working principle of capacitive touch screen
Capacitive touch screen is mainly composed of glass substrate, transparent conductive film, electrode and protective layer. When the user touches the screen, it forms a capacitive coupling with the conductive layer on the screen, which in turn changes the capacitance value in this area. By detecting the changes in these capacitance values, the touch screen controller can determine the position of the touch point for human-computer interaction.
Three, capacitive touch screen surface treatment technology
Anti-glare (AG) coating technology
Anti-glare coating technology uses the diffusion properties of light to segment ambient light, reduce specular reflection on the screen surface, and improve the readability of the screen in outdoor or bright light environments. This technique is achieved by using diffusing particles or etching on the glass surface, making the surface of the screen rough to diffuse light. The application of anti-glare coating technology not only improves the readability of the screen, but also reduces the fatigue of the eyes and improves the user's experience.
Anti-reflective (AR) coating technology
Anti-reflective coating technology improves the clarity of the screen by reducing the reflection of the screen and improving the transmission of the screen. This technique usually uses an optical coating process using Ti02 and Si02 as substrates to coat multilayer films on one or both sides. The application of anti-reflective coating technology makes the screen still able to maintain a clear display effect under strong light, and improves the adaptability of the screen in different environments.
Anti-fingerprint (AF) coating technology
Anti-fingerprint coating technology uses nanomaterials with excellent hydrophobic and oleophobic properties. This coating gives the screen a smooth touch and prevents fingers from leaving fingerprints and oil stains on the screen. The application of anti-fingerprint coating technology not only improves the appearance of the screen, but also makes the screen easier to clean and maintain.
Hardened coating technology
Hardened coating technology improves the wear resistance and scratch resistance of the screen by coating the surface with a layer of material with higher hardness, such as silicate glass. This technology can effectively prevent the screen from being scratched and worn in daily use, and extend the life of the screen.
Optical binding technique
Optical binding technology is a technology that combines touch screen and display screen closely. Through the optical binding technology, the air layer between the touch screen and the display screen can be eliminated to reduce the scattering and refraction of light, so as to improve the display effect and touch accuracy of the screen. With the application of optical binding technology, the display color, contrast and brightness of the screen have been significantly improved.
Four, surface treatment technology on the performance of capacitive touch screen
Improve the readability and clarity of the screen
Surface treatment technologies such as anti-glare and anti-reflection can effectively reduce the reflection and glare of the screen surface and improve the readability of the screen in outdoor or bright light environments. At the same time, these technologies can also improve the transmittance of the screen, making the screen better at displaying color, contrast and brightness.
Improve the touch experience
Anti-fingerprint, hardening and other surface treatments can make the screen surface smoother, easier to clean and maintain, thereby improving the user's touch experience. At the same time, the application of optical binding technology can also improve the touch precision and response speed of the screen, so that users can use it more smoothly and freely.
Extend screen life
Surface treatment technologies such as hardened coatings can effectively prevent the screen from being scratched and worn during daily use, thereby extending the life of the screen. This is particularly important for users who frequently use electronic devices such as mobile phones and tablets.
V. Conclusions
The surface treatment technology of capacitive touch screens plays a crucial role in improving user experience, enhancing screen durability and improving screen performance. By using surface treatment technologies such as anti-glare, anti-reflection, anti-fingerprint, hardened coating and optical binding, capacitive touch screens can be significantly improved in terms of readability, clarity, touch experience and service life. In the future, with the continuous development of science and technology, the surface treatment technology of capacitive touch screen will continue to progress and innovate to meet the needs of users for higher performance and better experience.