What are the types of touch screen covers?

The cover plate is a transparent lens attached to the outside of the electronic display screen and used to protect the touch display module of the touch display screen and the screen of the non-touch display screen. The touch module of the touch screen is a precision-processed sensitive component. If it is exposed to the outside, it will easily affect its use effect and life due to abrasion and scratches from sharp objects. water ripples, etc. Therefore, a cover plate needs to be added outside the display screen to protect the touch module and the display screen from damage. According to the material analysis of the cover plate substrate, the cover plate can be mainly divided into glass cover plate, ceramic cover plate, plastic cover plate and optical composite material cover plate:

(1) Glass cover:
Glass is a transparent semi-solid material with good light transmittance and special texture. After ion exchange, it can enhance the surface hardness and toughness. It is currently a widely used material in China's cover plate industry.

(2) Ceramic cover:
The light transmittance of the ceramic cover is poor, and it is mostly used in the rear cover. At the same time, the processing cycle of the ceramic cover plate is long, the process is difficult and the cost of input is high:

(3) Plastic cover:
Usually, acrylic material, namely polymethyl methacrylate (PMMA), is an early developed thermoplastic with good transparency and chemical stability, and acrylic material is cheap and easy to machine, but it is resistant to heat and acid and alkali resistance are poor.

(4) Optical composite material cover:
Optical composite materials are cover materials with optical functions based on multi-layer resin materials (PMMA.PC) as the base material. Compared with plastic materials, they have higher light transmittance and overcome the fragile nature of glass and ceramic materials. The shortcomings have become an important development direction of China's cover plate industry.