In the early stage of the development of capacitive touch screens, the market was mainly composed of two major products, glass structure and membrane structure. The former was represented by Laibao Hi-Tech, and the latter was represented by Ou Feiguang. The touch screen technology of high-end terminal equipment is mainly embedded by Apple and Samsung, and the touch screen used by low-end terminal equipment is divided by other touch technologies.
The main technology that projected capacitive touch panel with multi-touch application is divided into film type and glass type of . The Apple camp uses glass projection capacitors, while the other camp uses film projection capacitors. The mainstream glass structure has a touch sensor on the ITO glass, and the outer layer plus a protective glass is a G/G structure. The high-end ITO film material is in the hands of a few Japanese merchants, and the G/G bonding yield is generally low, which is the main reason for the high cost of the projected capacitive touch module.
