SMALL-SIZED RECTANGULAR PIEZOELECTRIC VIBRATOR

摘要

PROBLEM TO BE SOLVED: To provide a layout for an electrode structure that enhances a temperature characteristic of a small-sized rectangular AT-cut crystal vibrator. SOLUTION: This invention provides the small-sized rectangular piezoelectric vibrator that configures an electrode on both major sides of a rectangular crystal vibrator chip with its length in the X axis direction and its width in the Z' axis direction for oscillating a fundamental wave. The electrodes of the rectangular crystal vibrator chip are laid out such that the electrodes placed on both the major sides are offset within a range of 50μm<=d<=500μm in the Z' axis direction from the center position (d) of the vibration chip.