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发明授权
CN107251251B 压电装置以及电子设备 有权

压电装置以及电子设备
摘要：
电子书写工具(10)具备壳体(101)和压电传感器(20)。壳体(101)为圆筒形状。压电传感器(20)被配置为以弯曲的状态与壳体(101)的内壁面抵接。压电传感器(20)具备压电膜(21)、覆盖膜(50)、第一电极(24)、第二电极(25)、第三电极(29)以及基材(26)。基材(26)具有挠性。在基材(26)的表面上形成有第一电极(24)。第一电极(24)具有宽幅部(241)和窄幅部(242)。覆盖膜(50)覆盖宽幅部(241)与窄幅部(242)的边界(B1)。压电膜(21)覆盖第一电极(24)中被覆盖膜(50)覆盖的部分与未被覆盖膜(50)覆盖的部分的边界(B2)。
摘要（英）：

An electronic device that includes a housing and a piezoelectric sensor. The piezoelectric sensor is disposed in contact with an inner wall surface of the housing while in a bent state. The piezoelectric sensor includes a piezoelectric film, a coverlay, a first electrode, a second electrode, a third electrode, and a substrate having flexibility. The first electrode is disposed on a surface of the substrate. The first electrode includes a wide part and a narrow part. The coverlay covers a boundary between the wide part and the narrow part. The piezoelectric film covers a boundary between a part of the first electrode which is covered with the coverlay and a part of the first electrode which is not covered with the coverlay.

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