Verfahren zur Herstellung von Oberflächenwellenanordnungen für Endflächenreflektionen

摘要

The object of the invention is to to provide a manufacturing method for a surface wave device of an end-face reflection type which is favorable in a resonant characteristic with less possibility of occurrence of chipping. The method comprises forming an IDT (12) on a piezoelectric plate (11), and cutting the piezoelectric plate (11) in a direction which is parallel to the outermost electrode fingers of the IDT within a target area which extends from the out edges of the outermost electrodes to a position lambda /8 outwardly therefrom, lambda being the wavelength of the surface wave generated by the IDT, so as to form opposite end faces of the surface wave device.