Acoustic wave device, duplexer, communication module, communication apparatus, and manufacturing method for acoustic wave device
US8258891B2 · kind B2 · utility
1Cited by
5References
8Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 29, 2009 |
| Grant date | Sep 4, 2012 |
| Priority date | — |
| Expiry date | Jan 13, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49005
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An acoustic wave device includes a piezoelectric substrate, interdigital electrodes arranged on the piezoelectric substrate, a first dielectric element arranged between the interdigital electrodes, a second dielectric element that covers the interdigital electrodes and the first dielectric element, and an adjustment element that has been formed on the first dielectric element. The adjustment element has been formed from a material whose specific gravity is greater than that of the first dielectric element and that of the second dielectric element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.