PIEZOELECTRIC VIBRATION PIECE AND PIEZOELECTRIC VIBRATOR
PROBLEM TO BE SOLVED: To provide compact piezoelectric vibration piece and piezoelectric vibrator having excellent vibration characteristics.SOLUTION: A piezoelectric vibration piece 10 includes a piezoelectric plate 11 formed of an AT cut crystal substrate, and excitation electrodes 51A, 51B formed...
Gespeichert in:
Hauptverfasser: | , , |
---|---|
Format: | Patent |
Sprache: | eng ; jpn |
Schlagworte: | |
Online-Zugang: | Volltext bestellen |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | PROBLEM TO BE SOLVED: To provide compact piezoelectric vibration piece and piezoelectric vibrator having excellent vibration characteristics.SOLUTION: A piezoelectric vibration piece 10 includes a piezoelectric plate 11 formed of an AT cut crystal substrate, and excitation electrodes 51A, 51B formed, respectively, on the first surface 11A and second surface 11B of the piezoelectric plate 11 facing each other in the thickness direction. In at least the first surface 11A, a top face 21, and a slope 22 surrounding the top face 21 while inclining are formed. Inclination angle of the slope 22 for the top face 21 is set less than 90°, and at least in the first surface 11A, the excitation electrode 51A is formed across the top face 21 and slope 22.SELECTED DRAWING: Figure 1
【課題】優れた振動特性を備える小型の圧電振動片及び圧電振動子を提供する。【解決手段】圧電振動片10は、ATカット水晶基板により形成された圧電板11と、圧電板11のうち厚さ方向で対向する第1面11Aと第2面11Bとにそれぞれ形成された励振電極51A,51Bと、を備え、少なくとも第1面11Aには、頂面21と、頂面21を取り囲み頂面21に対して傾斜する斜面22と、が形成され、斜面22は、頂面21に対する傾斜角度が90°未満に設定され、少なくとも第1面11Aにおいて、励振電極51Aは、頂面21及び斜面22に亘って形成されている。【選択図】図1 |
---|