Apr 14, 2023 Leave a message

How To Solve A Problem With The Capacitive Touch Screen Cable?

Capacitive touch screen technology utilizes human body current detection for operation. The capacitive touch screen is a 4-layer composite glass screen. The inner surface and interlayer of the glass screen are coated with a layer of ITO, and the outermost layer is a thin protective layer of silica glass. The interlayer ITO coating is the working surface, with 4 edges guiding 4 electrodes, and the internal ITO is a shielding layer to ensure a good working environment. When fingers touch the metal layer, due to the electric field of the human body, a coupling capacitance is formed between the user and the touch screen surface. In the case of high-frequency current, capacitors are direct conductors, so fingers absorb small currents from the contact point. The current flows out from the electrodes at the four corners of the touch screen, and the current flowing through the four electrodes is the same as the current flowing from the fingers to the four corners
Distance is proportional. The controller correctly calculates these four current ratios to obtain the position of the contacts.
Because there is a partial charge on the surface, there is usually static electricity, and it is not possible to determine whether fingers or other conductors (such as capacitive pens) are pressed against it. Rubbing it in your pocket and frequently pressing it hard can cause dust on the screen, sweating on your hands, and static electricity on the dry human body in winter, which can cause partial screen load. In addition, in addition to the static electricity caused by winter drying, temperature is also an important factor. The usage conditions for electric screens are relatively strict, including temperature, humidity, etc. In theory, the ambient temperature requirement for electric screens is between 0 and 35. Moreover, in winter in the north, the temperature is generally below 0, which naturally causes screen malfunctions.
Usually, a forced restart can be resolved. Press the power and home keys for approximately 8 seconds to enter a forced restart state. However, if it still cannot be resolved, it is largely due to hardware. This is usually caused by this situation. Firstly, it either fell off or recently. The touch screen of the screen is loose and the direct wiring has dropped for a period of time.

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