Patent ID: 8622528

Claim:
A piezoelectric element comprising: a plurality of lower electrodes, comprising at least a first and a second lower electrodes; a plurality of piezoelectric layers, each of the plurality of piezoelectric layers disposed above each of the plurality of lower electrodes; at least one upper electrode comprising a first, single upper electrode that is disposed above the piezoelectric layers in such a manner as to face the first and second lower electrodes and that has a first, single upper electrode layer containing iridium and a second, single upper electrode layer containing titanium as a top layer of the first, single upper electrode, wherein the first single upper electrode layer and the second single upper electrode layer are disposed above the piezoelectric layers in such a manner as to face the first and second lower electrodes; and a lead electrode comprising at least a first lead electrode that is formed in connection to the second upper electrode layer and contains nickel and chromium.