CRYSTAL DIAPHRAGM

• Main Authors: YOSHIOKA HIROKI, KODA NAOKI
• Format: Patent
• Language: English; Japanese
• Published: 28.09.2017
• Subjects: BASIC ELECTRONIC CIRCUITRY; ELECTRICITY; IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS

PROBLEM TO BE SOLVED: To provide a crystal diaphragm in which the dispersion of a space gap amount is hard to occur, without impeding the vibration of the crystal diaphragm.SOLUTION: The crystal diaphragm includes: extraction electrodes 4- of each principal plane which are formed outside the vibration region of each principal plane of a crystal diaphragm 1 in a manner to be in close contact to the principal plane of the crystal diaphragm, and have thick parts 21- which are thicker than excitation electrodes 2- in the vicinity of a vibration region 1a; and an excitation electrode of each principal plane which are bonded at the thick parts of the extraction electrodes and formed apart at certain intervals from each principal plane of the crystal diaphragm in the vibration region.SELECTED DRAWING: Figure 1 【課題】水晶振動板の振動を阻害せずに、空間ギャップ量のバラツキが生じにくい水晶振動板を提供する。【解決手段】水晶振動板１の各主面の振動領域の外部で水晶振動板の主面に密着して形成されるとともに、振動領域１ａの近傍で励振電極２〜よりも厚肉の厚肉部２１〜を有する各主面の引出電極４〜と、引出電極の厚肉部で接合されるとともに、振動領域で水晶振動板の各主面から一定の間隔で離隔して形成される各主面の励振電極とを有する。【選択図】図１