The main structure of the capacitive touch screen monitor

- Jun 21, 2019-

All sides of the capacitive touch screen display are plated with elongated electrodes to create a low voltage alternating electric field in the electrical conductor. When touching the screen, due to the electric field of the human body, a coupling capacitor will be formed between the finger and the conductor, and the current from the four electrodes will flow to the contact, and the current intensity is proportional to the distance between the finger and the electrode. The controller behind the touch screen will change to calculate the current ratio and intensity and accurately calculate the position of the touch point. The double-layer glass of the capacitive touch screen not only protects the conductors and sensors, but also effectively prevents the external environment from affecting the touch screen. Even if dust sticks to the screen, the capacitive touch screen can accurately calculate the touch position.

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