Patent ID: 9646637
Date: 2017-05-09
CPC Classifications: G11B,H01L

Claim:
1. A thin-film piezoelectric material element comprising: a laminated structure part comprising a lower electrode film, a piezoelectric material film laminated on the lower electrode film and an upper electrode film laminated on the piezoelectric material film; a surface layer insulating film disposed on side surfaces of the laminated structure part and a top surface of the upper electrode film, and has a through hole formed on a top disposed part disposed on the top surface; and an upper electrode pad being in directly contact with an inside exposed surface, exposed inside the through hole, of the upper electrode film; wherein the upper electrode pad arranged entirely inside an outer edge part of the top disposed part, and formed without contact with a side disposed part, formed along with side surfaces of the laminated structure part, of the surface layer insulating film.