Acoustic wave element, filter element, and communication apparatus
US12218648B2 · kind B2 · utility
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2References
11Claims
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Key dates
| Filing date | May 18, 2023 |
| Grant date | Feb 4, 2025 |
| Priority date | — |
| Expiry date | May 18, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/6483
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An acoustic wave element 1 according to the present disclosure includes a piezoelectric substrate 2 and an IDT electrode 3 on the piezoelectric substrate 2. The IDT electrode 3 includes a multilayer structure of a first layer 35 comprised of Al containing 10% or less of a sub-component and a second layer 37 comprised of a CuAl2 alloy. The second layer 37 enables the acoustic wave element 1 to have excellent electric power resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.