Acoustic wave device
AssigneeMurata Manufacturing Co., Ltd.
InventorAkira Noguchi
Life of this patent
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Abstract
An acoustic wave device includes a mounting substrate including a multilayer body that includes a first layer including first and second signal wiring lines at least partially facing each other, and a second layer including a ground electrode, and an acoustic wave filter on the mounting substrate and electrically connected to the first signal wiring line, the second signal wiring line, and the ground electrode. The ground electrode overlaps the first and second signal wiring lines, and a region between the first and second signal wiring lines in plan view. A portion of the second layer overlapping the inter-wiring-line region in plan view includes a ground electrode missing portion.
Claims19
An acoustic wave device, comprising:
- a mounting substrate including a multilayer body that includes a first layer including a first signal wiring line and a second signal wiring line at least partially facing each other, and a second layer including a ground electrode;
- and
- an acoustic wave filter on the mounting substrate and electrically connected to the first signal wiring line, the second signal wiring line, and the ground electrode;
- wherein
- the ground electrode overlaps the first signal wiring line and the second signal wiring line, and a region between the first signal wiring line and the second signal wiring line in plan view;
- a portion of the second layer overlapping the region between the first signal wiring line and the second signal wiring line in plan view includes a ground electrode missing portion;
- in plan view, a shape of a portion of the first signal wiring line facing the second signal wiring line includes a longitudinal direction, and a shape of the ground electrode missing portion includes a longitudinal direction;
- and
- the longitudinal direction of the first signal wiring line and the longitudinal direction of the ground electrode missing portion are parallel or substantially parallel to each other.
Dependencies are inferred from the claim text.