Acoustic resonator
US11563417B2 · kind B2 · utility
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18Claims
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Key dates
| Filing date | Sep 21, 2018 |
| Grant date | Jan 24, 2023 |
| Priority date | — |
| Expiry date | Oct 17, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/174
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An acoustic resonator includes: a substrate; a resonant region including a first electrode, a piezoelectric layer, and a second electrode disposed on the substrate, and a reflective layer disposed along a periphery of the resonant region; and a connection electrode extending from the second electrode. The reflective layer includes a second section disposed between the resonant region and the connection electrode, and a first section, and a cross-sectional area of the first section is different than a cross-sectional area of the second section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.