| 摘要 |
Piezo-electric ceramic transducer 1 has upper piezo-electric active layer 5 and lower piezo-electric active layer 6 . Upper insulating layer 2 and lower insulating layer 3 , between which upper piezo-electric active layer 5 and lower piezo-electric active layer 6 are placed, are disposed on both surfaces of piezo-electric ceramic transducer 1 in a thickness direction thereof. Two electrode pads 8 and 9 are disposed on a surface of upper insulating layer 2 . Electrode pads 8 and 9 are connected with upper electrode layers 7 a and lower electrode layers 7 b via connection members 12 , and voltages are applied to upper piezo-electric active layer 5 and lower piezo-electric active layer 6 via electrode pads 8 and 9 . Insulating layers 2, 3 and 4 and piezo-electric active layers 5 and 6 are made of the same material as one another and are integrated by sintering.
|
