PIEZOELECTRIC DEVICE

To provide a piezoelectric device which enables further reduction of sound reverberation of ultrasonic components.SOLUTION: A piezoelectric device includes: a case defining a storage space; a piezoelectric element 20 disposed in the storage space; a cushioning material 60 disposed on the piezoelectr...

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Hauptverfasser:	MATSUMURA YU, HOSOKAWA YOSHIHIRO, TAKEDA AKITAKE, SUMIYOSHI MIKIO, OTA YOSHIO
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	BASIC ELECTRIC ELEMENTS BASIC ELECTRONIC CIRCUITRY DEAF-AID SETS ELECTRIC COMMUNICATION TECHNIQUE ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS PUBLIC ADDRESS SYSTEMS RESONATORS SEMICONDUCTOR DEVICES
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Beschreibung
Zusammenfassung:	To provide a piezoelectric device which enables further reduction of sound reverberation of ultrasonic components.SOLUTION: A piezoelectric device includes: a case defining a storage space; a piezoelectric element 20 disposed in the storage space; a cushioning material 60 disposed on the piezoelectric element; and a base plate 30 having a substrate 31. An interior of the cushioning material 60 has air bubbles 63. A surface of the cushioning material 60 has dents 65 which do not communicate with the air bubbles 63. The dents 65 facing a major surface 31b of the substrate are filled with a resin 67.SELECTED DRAWING: Figure 12 【課題】超音波成分の残響をより一層低減する圧電デバイスを提供する。【解決手段】圧電デバイスは、収容空間を画成するケースと、収容空間内に配置されている圧電素子２０と、圧電素子上に配置されている緩衝材６０基体３１を有する基板３０と、を備える。緩衝材６０の内部は、複数の気泡６３を有する。緩衝材６０の表面は、複数の気泡６３と連通していない複数の窪み６５を有する。基体の種面３１ｂと対抗する複数の窪み６５は、樹脂６７で埋められている。【選択図】図１２