Elastic wave device and method for manufacturing the same
US11152914B2 · kind B2 · utility
0Cited by
4References
19Claims
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Key dates
| Filing date | Aug 17, 2017 |
| Grant date | Oct 19, 2021 |
| Priority date | — |
| Expiry date | Aug 1, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H2003/025
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An elastic wave device includes a piezoelectric layer including a first main surface and a second main surface facing the first main surface, an acoustically reflective layer stacked on the first main surface of the piezoelectric layer, an excitation electrode disposed on the piezoelectric layer, and a support layer. The acoustically reflective layer overlaps at least the excitation electrode in a plan view of the piezoelectric layer from the side of the second main surface. The support layer surrounds the acoustically reflective layer in a plan view of the piezoelectric layer from the side of the second main surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.