Haptic feedback substrate and driving method therefor, and touch device

A driving method for a haptic feedback substrate, comprising:

• obtaining a haptic feedback signal required by a user;
• and
• driving the haptic feedback substrate to vibrate according to the haptic feedback signal;
• wherein said driving the haptic feedback substrate to vibrate comprises:
• at an initial vibration stage, loading a first AC signal to a piezoelectric vibration unit of the haptic feedback substrate;
• a frequency of the first AC signal being greater than a frequency of the haptic feedback signal, and the haptic feedback substrate being configured to resonate under an action of the first AC signal;
• at a stable vibration stage, loading the haptic feedback signal to the piezoelectric vibration unit of the haptic feedback substrate;
• at a terminal vibration stage, loading a second AC signal to the piezoelectric vibration unit of the haptic feedback substrate;
• a frequency of the second AC signal being a non-resonant frequency of the haptic feedback substrate, and the frequency of the second AC signal being greater than the frequency of the haptic feedback signal.