What is the principle of the stylus?
The principle of stylus is similar to that of touch screen technology. At present, various stylus pen on the market can be roughly classified into two types: resistive stylus and capacitive stylus pen.
The dry negative and capacitive touch screen terminals are respectively used. The resistive touch screen mainly realizes the operation and control of the contents of the screen through the principle of pressure sensing.
The stylus pen only needs to ensure that it can provide enough pressure, and most ordinary styluses can also meet the requirements.
The capacitive touch screen technology works by using the current induction of the human body, so the capacitive touch stylus must be made of conductive materials and must have conductive properties. when touch the pen touches the capacitive touch screen, the human body will form a coupling capacitance through the stylus and the surface of the touch screen. For dry high-frequency current, the capacitance is a direct conductor, and the stylus absorbs a small amount of electricity from the contact point. current. This current flows out from the electrodes on the four corners of the touch screen respectively, and the current flowing through these four electrodes is proportional to the distance from the finger to the corner. point location.
Post time: Jun-17-2022