touch screen to tv.When a mobile terminal user??s finger touches the touch screen, due to the human body??s electric field, the user and the surface of the touch screen form a coupling capacitance, so the finger draws a small current from the contact point and detects electrodes in different directions by scanning. The change in capacitance between the touch points determines the touch position. The mobile terminal can process multiple touch coordinates at one time. When a finger touches the surface of the capacitive touch screen, a coupling capacitance will be formed between the finger and the touch screen, and the capacitance value of the touch point will change. Scan the X- axis and Y- axis electrode matrix, detect the change in capacitance of the touch point, and calculate the position of the finger. The most common application of this capacitive touch screen is multi-touch technology .

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