PROBLEM TO BE SOLVED: To prevent individual wires from developing a short circuit with the side surface of the laminated piezoelectric element because of protruding of a conductive adhesive used in connecting the individual wires in the ultrasonic probe having zigzag connection of the individual wires pulled out of a piezoelectric body.SOLUTION: The individual laminated piezoelectric elements contain laminated structure bodies laminated with a plurality of piezoelectric body layers and internal electrodes, a first and a second flat electrodes formed at both ends of the laminated structure bodies, the first and the second side surface electrodes formed on the first and the second side surfaces of the laminated structure bodies, an insulation film formed at the second side surface side of the laminated structure bodies, and a wiring member connected to the first flat surface electrode using a conductive adhering material at one end of the laminated structure bodies. In the first laminated piezoelectric element, the wiring member is installed at the second side surface side of the laminated structure bodies and the insulation film separates electrically the second side surface electrode from the conductive adhering material. In the second laminated piezoelectric element, the wiring member is installed at the first side surface side of the laminated structure bodies.COPYRIGHT: (C)2010,JPO&INPIT【課題】圧電体から引き出される個別配線が千鳥配置となる超音波探触子において、個別配線を接着する際に導電性接着剤がはみ出して積層型圧電素子の側面電極との間に生じる短絡を防止する。【解決手段】各々の積層型圧電素子が、複数の圧電体層と内部電極とが積層された積層構造体と、積層構造体の両端に形成された第1及び第2の平面電極と、積層構造体の第1及び第2の側面上に形成された第1及び第2の側面電極と、積層構造体の第2の側面側に形成された絶縁膜と、積層構造体の一方の端において、導電性接着材料を用いて第1の平面電極に接着された配線部材とを含み、第1の積層型圧電素子において、配線部材が積層構造体の第2の側面側に設けられ、絶縁膜が第2の側面電極と導電性接着材料とを電気的に分離し、第2の積層型圧電素子において、配線部材が積層構造体の第1の側面側に設けられている。【選択図】図1
