Display panel, fabrication method thereof and display device

A fabrication method of a display panel, comprising:

• forming a piezoelectric sensing layer on a first substrate;
• forming a surface acoustic wave driver on the piezoelectric sensing layer, the surface acoustic wave driver being used to excite a surface acoustic wave, and the surface acoustic wave propagating along the piezoelectric sensing layer;
• forming a passivation layer on the piezoelectric sensing layer where the surface acoustic wave driver has been formed;
• forming grooves in the passivation layer;
• dropping polymer material into the passivation layer;
• driving the polymer material into the grooves by the surface acoustic wave;
• performing a first curing, so that the polymer material is fixedly connected with the grooves;
• and cell-assembling the first substrate and a second substrate.