Kyocera Corporation

Yoshihiro Ookubo

Toru Fukano

Junya Nishii

An acoustic wave device comprises a substrate and an acoustic wave element on one main surface of the substrate. Side surfaces of the substrate comprises a protruding portion which protrudes out at a side of an another main surface closer than a side with the one main surface side.

Acoustic wave device and method for producing same

Provided is a highly reliable acoustic wave device wherein deterioration of electrical characteristics due to deformation of a protective cover is suppressed. A method for manufacturing such acoustic wave device is also provided. The acoustic wave device has a piezoelectric substratepropagating an acoustic wave; an excitation electrode arranged on a first main surface of the piezoelectric substrate; a columnar outside connection-use electrodeelectrically connected to the excitation electrode; a protective coverhaving a hollow accommodating spacein which the excitation electrode is accommodated on the first main surface; and a conductive layerconnected to the electrodeon the protective cover

Acoustic wave device comprising an inter-digital transducer electrode

A small and highly reliable acoustic wave device and a method for production of the same will be provided. The acoustic wave device has a piezoelectric substrate; a SAW elementon one main surface of the piezoelectric substrate; an outside connection-use conductorformed on the one main surface of the piezoelectric substrateand electrically connected to the SAW element; a columnar electrodeon the outside connection-use conductor; and a protective coverdefining inner walls of a vibration spacefor vibration of the SAW elementand planarly surrounding a side surface of the columnar electrode

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Higashiomi, Japan

Yoshihiro Ookubo