Patent ID: 7019441

Claim:
A piezoelectric/electrostrictive film type device comprising: a substrate formed of a ceramic, at least one piezoelectric/electrostrictive portion formed of a piezoelectric/electrostrictive porcelain composition on the substrate, and at least one pair of electrodes on the substrate, electrically connected to the piezoelectric/electrostrictive portion and including a positive electrode and a negative electrode, wherein the piezoelectric/electrostrictive porcelain composition contains a PbMg 1/3 Nb 2/3 O 3 —PbZrO 3 —PbTiO 3 ternary solid solution system composition as a major component, contains 0.05 to 3.0 wt % of NiO, and contains 2.0 to 22.0 mol % of Si with respect to the total number of moles of Mg and Ni, and the piezoelectric/electrostrictive portion is solidly attached onto the substrate directly or via the positive electrode or the negative electrode.