Piezoelectric ceramic element and portable device

A piezo-electric ceramic transducer which bends in a thickness direction thereof by applying voltage to the transducer, the transducer comprises:

• two-piezo-electric active layers having at least one piezo-electric layer respectively, said piezo-electronic active layers being applied cottages via electrode layers so that one of said piezo-electric active layer expands and the other one contracts,
• an intermediate insulating layer disposed between said two piezo-electronic active layer,
• two surface insulating layers, bweteween which said two piezo-electric active layers are placed, disposed on both surfaces of said piezo-electric ceramic transducer in a thickness direction thereof,
• electrode pads disposed on only one of said two surface insulating layers and electrically connected with said electrode layers, and
• wherein said piezo-electric active layers, said intermediate layer and said surface insulating layers are made of the same material as one another and are integrated with one another by sintering.