Touchscreens are getting more and more popular nowadays, and they are gradually replacing keyboard. This is because touchscreens are more user-friendly, provide more software flexibility, more space and cost saving, and other advantages. Touchscreens also resolve problems caused by the interface between human and machines. However, an ordinary touch screen panel does not provide any tactile feedback and easily causes HMI problems. The best scenario is to have a touch screen panel that has tactile feedback. However, is this possible? The answer is YES if you used piezoelectric ceramic。