Piezoelectric element and method for manufacturing same

• Main Authors: OSAWA KAZUHIKO, TESHIMA YOSHIRO, WATANABE TETSUYA, OTSUKA TAKAHIRO, HIROTA KAZUHIRO
• Format: Patent
• Language: Chinese; English
• Published: 19.08.2022
• Subjects: BASIC ELECTRONIC CIRCUITRY; ELECTRICITY; IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS

The present invention provides a piezoelectric element and a method for manufacturing the same, which improve the crystal impedance of a piezoelectric element including an AT-cut crystal sheet having a quadrilateral planar shape and side surfaces intersecting the Z'axis of the crystal including a predetermined first surface, a predetermined second surface, and a predetermined third surface. The crystal piece is connected and fixed to the container through a conductive adhesive on a first side which is a side touching the-X side of the X-axis of the crystal, among two sides parallel to the Z '-axis. W1/W0 is 0.91 or more, where W1 represents the dimension of a straight line portion along the Z'axis of a second side facing the first side, and W0 represents the dimension of the AT-cut wafer along the Z 'axis. The two sides of the straight line part of the second side along the Z'axis are roughly right-angle corner parts connected with the side of the crystal piece along the X axis of the crystal. 本发明提供一种压电元件及其制作