A sheet-form piezoelectric device having improved mechanical strengths as represented by an electrode peel strength while retaining flexibility and piezoelectric performances of a polymer-type piezoelectric device, is obtained by embedding a perforated sheet electrode into at least one surface layer...http://www.google.com/patents/US5410210?utm_source=gb-gplus-sharePatent US5410210 - Piezoelectric device and process for production thereof
