Cover glass, mainly used in the outer layer of the touch screen, also known as reinforced optical glass, glass window, reinforced mobile phone lens. The main raw material of the product is ultra-thin plate glass. After processing by cutting, CNC carving, thinning, strengthening, coating and printing, the product has the functions of impact resistance, scratch resistance, oil resistance, fingerprint resistance and light transmittance enhancement. On the one hand, it can protect the touch screen; on the other hand, it can print different colors, patterns and markers to decorate and beautify the product. Since entering the era of touch control marked by apple products, capacitive touch screen solutions have become the mainstream of human-computer interaction in mobile terminals such as mobile phones, tablets and touch-controlled laptops by virtue of their stable performance and good tactile sensation.
According to the different production formula of glass cover plate substrate can be divided into sodium calcium glass and high aluminum glass, according to the production process can be divided into float and overflow method. At present, sodium-calcium glass is produced by float process. Therefore, there are three types of glass cover substrates on the market, namely, float sodium-calcium glass cover substrates, float high aluminum glass cover substrates and overflow high aluminum glass cover substrates.