PIEZOELECTRIC COMPONENT

• Main Author: NAKAMA HIROTO
• Format: Patent
• Language: English; Japanese
• Published: 06.09.2018
• Subjects: BASIC ELECTRONIC CIRCUITRY; ELECTRICITY; IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS

PROBLEM TO BE SOLVED: To provide a piezoelectric component that can accurately maintain an oscillatory frequency during implementation and use.SOLUTION: A piezoelectric component of the present disclosure comprises: a rectangular parallelepiped piezoelectric element 2 having a pair of excitation electrodes 21 that face each other; and a support substrate 1 that fixes, on its top face, both ends in the longitudinal direction of the piezoelectric element 2 to support the piezoelectric element. On the top face of the support substrate 1, a pair of capacitor electrodes 12 electrically connected to the pair of excitation electrodes 21 are provided; on an undersurface of the support substrate 1, a pair of input/output terminal electrodes 13 electrically connected to the pair of capacitor electrodes 12, and a ground terminal electrode 14 arranged between the pair of input/output terminal electrodes 13 are provided extending in a width direction of the support substrate 1; and the ground terminal electrode 14 has a thickness smaller in the center part than the thickness at both ends in the width direction of the support substrate 1.SELECTED DRAWING: Figure 3 【課題】 実装時および使用時において発振周波数を高精度に維持することのできる圧電部品を提供する。【解決手段】 本開示の圧電部品は、互いに対向する一対の励振電極２１を有する直方体状の圧電素子２と、圧電素子２の長手方向の両端部を上面に固定して支持する支持基板１とを備え、支持基板１の上面には、前記一対の励振電極２１と電気的に接続された一対の容量電極１２が設けられているとともに、支持基板１の下面には、一対の容量電極１２と電気的に接続された一対の入出力端子電極１３と、一対の入出力端子電極１３の間に配置されたグランド端子電極１４とが支持基板１の幅方向に延びて設けられており、グランド端子電極１４は、支持基板１の幅方向の両端部における厚みよりも中央部における厚みのほうが薄い。【選択図】 図３