Acoustic wave device
US11824513B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 24, 2022 |
| Grant date | Nov 21, 2023 |
| Priority date | — |
| Expiry date | Aug 13, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/02858
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An acoustic wave device includes a piezoelectric substrate and an IDT electrode on the piezoelectric substrate. The IDT electrode includes first and second electrode fingers. When the propagation direction of acoustic waves is a first direction and the direction orthogonal or substantially orthogonal to the first direction is a second direction, an intersecting region of the IDT electrode includes a central region located toward the middle in the second direction and first and second edge regions on both sides in the second direction of the central region. The first and second electrode fingers include epitaxially grown oriented films in the central region and portions that do not include the oriented films in the first and second edge regions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.