Patent ID: 7765660

Claim:
A method of manufacturing a multilayered piezoelectric element having a multilayered structure in which at least one first electrode layer and at least one second electrode layer are alternately stacked with a piezoelectric material layer therebetween, said method comprising the steps of: (a) forming a first piezoelectric material layer; (b) forming a first electrode layer on said first piezoelectric material layer except for a first predetermined region; (c) forming a second piezoelectric material layer on said first electrode layer; (d) forming a second electrode layer on said second piezoelectric material layer except for a second predetermined region; (e) forming a third piezoelectric material layer on said second electrode layer; (f) forming a first side surface and a second side surface by dicing the formed multilayered structure to protrude at least a part of an end portion of said first electrode layer to an outer side than adjacent piezoelectric material layers on the first side surface and secure a first insulating region between said first electrode layer and the second side surface, and to protrude at least a part of an end portion of said second electrode layer to an outer side than adjacent piezoelectric material layers on the second side surface and secure a second insulating region between said second electrode layer and the first side surface; (g) forming a first side electrode, which is connected to the at least a part of the end portion of said first electrode layer and insulated from said second electrode layer by said second insulating region, on the first side surface of said multilayered structure; and (h) forming a second side electrode, which is connected to the at least a part of the end portion of said second electrode layer and insulated from said first electrode layer by said first insulating region, on the second side surface of said multilayered structure.