Patent ID: 9722169
Date: 2017-08-01
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, a first top surface of the upper electrode film and a second top surface of the lower electrode film, and has a first through hole formed on a first top disposed part disposed on the first top surface and a second through hole formed on a second top disposed part disposed on the second top surface; an upper electrode pad being in directly contact with a first inside exposed surface, exposed inside the first through hole, of the upper electrode film; and a lower electrode pad being in directly contact with a second inside exposed surface, exposed inside the second through hole, of the lower electrode film; wherein the upper electrode pad is arranged entirely inside a first outer edge part of the first top disposed part, and is formed without contact with a side disposed part, formed along with side surfaces of the laminated structure part, of the surface layer insulating film, wherein the lower electrode pad is arranged entirely inside a second outer edge part of the second top disposed part, and is formed without contact with the side disposed part.