Patent ID: 7402936
Filing Date: 2008-07-22
Classification: H01L,Y10T

Abstract:
1. A piezoelectric/electrostrictive device, comprising: a thin-plate portion; a stationary portion that supports the thin-plate portion; and a piezoelectric/electrostrictive element which is formed by laminating a plurality of electrodes and at least one piezoelectric/electrostrictive layer at least on a plane of the thin-plate portion and has a lateral end surface formed with the respective lateral end surfaces of the plurality of electrodes and the lateral end surface of the at least one piezoelectric/electrostrictive layer, the device being formed by applying curved surface forming and/or chamfering to a corner of the lateral end surface of the piezoelectric/electrostrictive element; and having the surface roughness of a planar portion of the lateral end surface of the piezoelectric/electrostrictive element finished into 1 μm or less in terms of Ra by polishing, wherein the subsequent heating process is repeatedly applied twice or more.