ELASTIC WAVE FILTER COMPONENT

摘要

PROBLEM TO BE SOLVED: To improve the yield of an elastic wave filter component.

SOLUTION: An elastic wave filter component 1 of this invention is formed so that a distance between a plain surface including an upper surface of a first piezoelectric substrate 3 and a plain surface including an upper surface of the second piezoelectric substrate 5 becomes smaller than a distance between a plain surface including a lower surface of the first piezoelectric substrate 3 and a plain surface including a lower surface of the second piezoelectric substrate 5 in the elastic wave filter component 1 when the first piezoelectric substrate 3 is thicker than the second piezoelectric substrate 5. This structure reduces a difference between heights of a first columnar wiring electrode 7 and a second columnar wiring electrode 9. As a result, the manufacturing processes of the elastic wave filter component 1 are simplified.

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