The commercialization of the projected capacitive touch screen has given functions that the previous touch screen did not have, and has improved the expressive power, which has become a reason for the large extension of the touch screen. As a result, great changes have taken place in the industry.
The situation of the resistive touch screen is somewhat similar to that of the liquid crystal display. Touch screen manufacturers purchase the upper and lower substrates, which are the main raw materials for the production of touch screens, and complete the production of touch screens in combination with their own manufacturing processes. First, complete the production of each functional layer on the upper and lower substrates, then attach the upper and lower substrates, and finally connect the FPC (Flexible Printed Circait board) to supply the complete machine manufacturer. Some touch screen manufacturers directly purchase 1C as the raw material, but in most cases, the complete machine manufacturer directly purchases it. The whole process is the same as the liquid crystal display manufacturing process except which party buys the 1C.
In contrast, capacitive touch screens are different. The transparent electrodes and metal electrodes that form the touch screen are provided by specialized manufacturers after coating and other processes are patterned, and then the processed substrate is connected to the 1C to realize the function of the touch screen.
and 1C production is the main part of touch screen production. Among resistive touch screens, touch screen manufacturers
There is basically no manufacturing function. It has formed a business model in which 1C manufacturers have a leading position and provide touch screen substrates and liquid crystal displays to complete machine manufacturers.
The development of capacitive touch screens directly affects the development of the touch screen industry. In the future, the development of capacitive touch screens will proceed together with the development of the touch screen industry, which deserves more attention.
In terms of manufacturing process and materials, the LCD panel and the touch screen are relatively similar. In other words, manufacturers of liquid crystal display panels can produce touch screens at the technical level. However, not many of the top LCD panel manufacturers devote themselves to the development and production of touch screens. Due to the continuous development of capacitive touch screens, among Japanese LCD panel manufacturers, only Sharp and Hitachi have become manufacturers of touch screens. The main reason is that the market size of touch screens is still very small compared with LCD panels.
