What is the reason for the noise on the POCO Pad screen when it is turned on?

The POCO pad has undergone strict professional inspection before leaving the factory, so please feel free to use it.
The screen will produce a capacitance effect and piezoelectric effect during operation, which will cause mechanical vibration and cause screen noise. This is a normal phenomenon. If you confirm that the noise is caused by cosmetic damage to the screen, please apply to the after-sales service center for repair.
Note:
External electromagnetic interference or internal circuit interference can cause abnormal screen display or noise. Keep the device away from strong magnetic fields and other interference sources.