Piezoelectric transducer providing haptic feedback

A piezoelectric transducer, comprising a stacked structure, including:

• a bottom protective layer;
• a first piezoelectric layer positioned on top of the bottom protective layer;
• a first electrode layer positioned at the bottom of the first piezoelectric layer, and a second electrode layer positioned adjacent to and in the same plane as the first piezoelectric layer, the first and second electrode layers extending beyond the edge of the bottom protective layer;
• an adhesive layer positioned over the first piezoelectric layer, only partially covering the first piezoelectric layer;
• a second piezoelectric layer positioned on top of the adhesive layer;
• a third electrode layer positioned at the bottom of the second piezoelectric layer, wherein the third electrode layer and the adhesive layer are positioned next to each other without any overlap between them;
• a fourth electrode layer at the top of the second piezoelectric layer;
• and
• a second protective layer positioned on the top of the transducer.