When you don't press the "key", the display is normal. When you press the key, the display vibrates because the scanning frequency can meet the display demand when you don't press the key. After pressing, the scanning frequency can't meet the demand due to the increase of programs and many delays, so that the appearance of "vibration" appears.

Vibration switch, the correct name should be called vibration sensor, that is, the electronic switch that transmits the sensing result to the circuit device when the induced vibration force is large or small, and makes the circuit start to work

It is generally divided into two categories: spring switch and ball switch:

In fact, strictly speaking, the vibration switch should simply refer to the spring switch, not including the ball switch. The name of vibration switch seems to be a typo caused by the homonym of "vibration" and "vibration". It has been recognized by people for a long time.

Spring switch and ball switch are collectively called vibration switch. Vibration switch is mainly used in electronic toys, small household appliances, sports equipment and all kinds of anti-theft devices.

Vibration switch has become an indispensable electronic component in many electronic products because of its flexible and sensitive triggering. From a professional point of view, we still divide it into two categories: spring switch and ball switch. Both types of switches have two important index characteristics, sensitivity and directivity.

The sensitivity of spring switch refers to that different products will produce different differences due to the magnitude of induced seismic force in the actual device. This difference is called sensitivity. Users will choose vibration switches with different induced vibration force to meet the sensitivity of their products because of the needs of different products.