PROBLEM TO BE SOLVED: To draw out the upper side electrode layer of a composite multichannel piezoelectric vibrator in which a plurality of multichannel piezoelectric vibrators are combined and made composite to the outside by a simple configuration.SOLUTION: The composite multichannel piezoelectric vibrator is obtained by aligning, in a plane direction and in a two-dimensional direction, a plurality of multichannel piezoelectric vibrators 1 including a multichannel piezoelectric vibration plate 9 formed as a composite body of piezoelectric vibrator units 8 arrayed in the two-dimensional direction and having electrode layers 3 and 4 on upper and lower surfaces, and upper side electrode draw-out foil 12 attached to the upper side surface of the upper side electrode layer 3 of the multichannel piezoelectric vibration plate 9 (provided that, in the upper side electrode draw-out foil 12, an extension part 12a that extends outwards from each side of the multichannel piezoelectric vibration plate 9 and covers at least a part of the side face of a sound absorbing material layer 10 is formed, and an adhesive layer 13 is attached to the surface of the extension part 12a of the upper side electrode draw-out foil 12), and the composite multichannel piezoelectric vibrator 1 is formed by electrically connecting the adjacent multichannel piezoelectric vibrators 1 through the adhesive layer 13 attached to the surface of the extension part 12a of each upper side electrode draw-out foil 12.COPYRIGHT: (C)2013,JPO&INPIT【課題】複数個の多チャンネル圧電振動子を組み合わせて複合化した複合多チャンネル圧電振動子の上側電極層を簡単な構成で外部に引き出せるようにする。【解決手段】上下の表面に電極層3、4を有する、二次元方向に配列された圧電振動子単位8の複合体として形成された多チャンネル圧電振動板9と、多チャンネル圧電振動板9の上側電極層3の上側表面に付設した上側電極引出箔12(但し、上側電極引出箔12は、多チャンネル圧電振動板9の各辺から外に延びて吸音材層10の側面の少なくとも一部を覆う延長部12aが形成されており、その上側電極引出箔12の延長部12aの表面には接着剤層13が付設されている)とを含む多チャンネル圧電振動子1が複数個、平面方向かつ二次元方向に整列してなり、かつ隣接する多チャンネル圧電振動子1を、各々の上側電極引出箔12の延長部12aの表面に付設されている接着剤層13を介して電気的に接続させることにより形成した複合多チャンネル圧電振動子。【選択図】図2
