In the design of touch screen products, performance and cost need to be weighed. The cost of resistive touch screens is low, competition is fierce, and there are certain limitations in performance and applications.
1. The capacitive touch screen only needs touch, not pressure to generate signals.
2. Capacitive touch screens only need one time or no calibration at all after production, while resistive technology requires regular calibration.
3. The life of the capacitive solution will be longer, because the components in the capacitive touch screen do not require any movement. In resistive touch screens, the upper ITO film needs to be thin enough to be flexible so that it can bend downward to contact the lower ITO film.
4. Capacitance technology is superior to resistance technology in terms of light loss and system power consumption.
5. The choice between capacitive technology or resistive technology mainly depends on the object that touches the screen. If it is touched by a finger, a capacitive touch screen is a better choice. If you need a stylus, whether it is plastic or metal, a resistive touch screen can do the job. The capacitive touch screen can also use a stylus, but it needs a special stylus to cooperate.
6. The surface capacitive type can be used for large-size touch screens, and the relative cost is relatively low, but currently cannot support gesture recognition; the inductive capacitive type is mainly used for small and medium-sized touch screens, and can support gesture recognition.
7. Capacitive technology is wear-resistant, has a long life, and has low maintenance costs when used by users, so the overall operating expenses of manufacturers can be further reduced.
Capacitive touch screens have been applied to iPhones and other handheld devices. Single-point trajectory positioning/simulation of mouse double-clicks are its basic functions. The recognition and application of multi-finger gesture operations has become a hot spot in the current market. In portable applications, the user holds the device with one hand and can only operate with the other hand. Therefore, it is particularly important to recognize multi-finger gesture operations such as grasping/translation, stretching/compression, rotation, and page turning.
