Causes and countermeasures for touch failure of small and medium-sized touch screens

Causes of touch screen failure

1. Static electricity

Usually, touchable LCD screens are capacitive screens, and the positioning method of the touch screen is through the electric field. Therefore, when static electricity and discharge occur, the LCD touch screen will have a "drift" screen effect, that is, the click position is offset from the actual response position.

2. Physical reasons

The so-called physical damage is that a hard object directly hits the LCD screen, causing the touch glass to break. This is the most direct cause of touch screen damage, and even the touch LCD screen is directly scrapped.

3. Other reasons

Other conductive materials can also cause damage to the touch LCD screen. Water stains, water vapor and sweat stains can damage the circuit of the touch screen, so that the touch LCD screen cannot work normally.

4. If the failure occurs after updating the software, it may be caused by software mismatch, which can be solved by updating the software.

Touch screen failure detection methods and countermeasures

1. It is necessary to go to a professional touch LCD repair place for detection. First, determine the cause of the damage to the touch LCD screen. In this way, you can accurately determine where the LCD screen needs to be repaired, and then repair or replace the internal parts;

2. If the LCD screen is damaged due to circuit problems, you can repair the external connection of the LCD screen; if the LCD screen is damaged by impact, you can replace the capacitor LCD screen or the parts of the internal structure according to the situation; if the LCD screen is damaged due to liquid and gas penetration, you need to disassemble the LCD screen for air drying, and replace some burned parts when necessary; if it is caused by software, it can be solved by updating the software.

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