Display panel including piezoelectric device and method for compensating for properties of piezoelectric device

A display panel, comprising:

• a panel;
• a piezoelectric device coupled with the panel, wherein the piezoelectric device includes:
• a plurality of piezoelectric elements disposed at different positions of the panel and each configured to generate vibrations according to a driving signal,
• a driver configured to supply the driving signal to the plurality of piezoelectric elements,
• a plurality of acceleration sensors configured to detect acceleration information of vibrations in different regions of the panel, and
• a compensator configured to control the driving signal to compensate for property deviations of the plurality of piezoelectric elements based on the acceleration information;
• a memory storing temperature property information that describes a relationship between a change in physical properties of a piezoelectric element and temperature;
• and
• a temperature sensor disposed on the panel to detect temperature information, wherein the compensator is configured to control the driving signal based on the temperature information and the temperature property information.

A method for compensating for properties of a piezoelectric device including a plurality of piezoelectric elements, the method comprising:

• applying the same driving signal to drive the plurality of piezoelectric elements to generate vibrations;
• detecting, by a plurality of acceleration sensors spaced apart from each other, acceleration information of the vibrations generated by the plurality of piezoelectric elements;
• calculating property deviations of the plurality of piezoelectric elements based on the acceleration information;
• and
• controlling driving signals output to the plurality of piezoelectric elements to compensate for the property deviations.