Method of producing edge reflection type surface acoustic wave device

A method of producing a plurality of edge reflection type surface acoustic wave devices having first and second reflection edges opposed to each other, the method comprising the steps of:

• preparing a surface acoustic wave mother substrate having two main surfaces and a plurality of interdigital transducers formed on one of the two main surfaces thereof;
• feeding one of a cutting device and the surface acoustic wave mother substrate at a first feeding pitch and forming a plurality of first cut grooves on the surface acoustic wave mother substrate on the one main surface thereof such that the first reflection edges of the respective surface acoustic wave devices are sequentially formed;
• and
• feeding one of the cutting device and the surface acoustic wave mother substrate at a second feeding pitch and forming a plurality of second cut grooves on the surface acoustic wave mother substrate on the one main surface thereof such that the second reflection edges of the respective surface acoustic wave devices are sequentially formed;
• wherein
• the first feeding pitch is substantially equal to the second feeding pitch.

A method of producing a plurality of edge reflection type surface acoustic wave devices having first and second reflection edges opposed to each other, the method comprising the steps of:

• preparing a surface acoustic wave mother substrate having, two main surfaces and a plurality of interdigital transducers formed on one of the two main surfaces thereof;
• repeatedly forming a plurality of first cut grooves on the surface acoustic wave mother substrate on the one main surface thereof such that the first reflection edges of the respective surface acoustic wave devices are sequentially formed;
• repeatedly forming a plurality of second cut grooves on the surface acoustic wave mother substrate on the one main surface thereof such that the second reflection edges of the respective surface acoustic wave devices are sequentially formed;
• and
• rotating the surface acoustic wave mother substrate by 180 degrees about an axis passing through a center of both of the two main surfaces of the surface acoustic wave mother substrate after the first reflection edges are sequentially formed, such that the second reflection edges are formed sequentially on the rotated surface acoustic wave mother substrate.