What is the principle of capacitive touch screen?

In this era of continuous technological development and innovation, people’s living standards are getting higher and higher, capacitive touch screens have also brought a lot of convenience to people’s work and life, and their applications in the market are also very popular. Everyone at work Do you understand? The following editor will explain the principle of touch screen for everyone? The capacitive touch screen is a transparent special metal conductive material attached to the glass surface. When a finger touches the metal layer, the capacitance of the contact will change, causing the frequency of the oscillator connected to it to change. By measuring the frequency change, the touch position can be determined to obtain information. Since the capacitance changes with temperature, humidity or grounding conditions, its stability is poor and drift phenomenon tends to occur. The capacitive screen is a type of touch screen, which can be understood as a combination of many transparent small capacitors. The position of each capacitor can be identified in the system. When working, each capacitor of the capacitive screen has a little charge. When we When you touch the capacitive screen with your finger, the electric charge at the position touched by your finger will be taken away (the human body is also conductive), and the system can calculate which position the electric charge of the small capacitor is taken away, so that you can know the touch action Occurs and performs the corresponding function. This is why, in winter, ordinary gloves cannot be used, because ordinary gloves do not conduct electricity. Capacitive screen multi-touch is a touch action in which the system can recognize multiple locations at the same time. This is mainly compared to resistive touch screens. Because of the different working principles, ordinary resistive screens can only recognize one point of touch action at a time. Rongguan’s capacitive touch screen is customized by professional manufacturers, has rich industry experience, meticulous workmanship, excellent quality, strict quality management system, and perfect after-sales service. Welcome to inquire:.
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