Elastic wave device including a supporting substrate, medium layer, and piezoelectric body
US9190981B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 27, 2014 |
| Grant date | Nov 17, 2015 |
| Priority date | — |
| Expiry date | Jun 18, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/02559
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An elastic wave device includes a medium layer, a piezoelectric body, and an IDT electrode that are disposed on a supporting substrate. The medium layer is made of a medium containing a low-velocity medium in which a propagation velocity of a same bulk wave as that which is a main vibration component of an elastic wave propagating in the piezoelectric body and being used is lower than a propagation velocity of the elastic wave, and a high-velocity medium in which the propagation velocity of the same bulk wave as that which is a main vibration component of the elastic wave is higher than the propagation velocity of the elastic wave.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.