Acoustic device using higher order harmonic piezoelectric element
US7000474B2 · kind B2 · utility
58Cited by
31References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 28, 2003 |
| Grant date | Feb 21, 2006 |
| Priority date | — |
| Expiry date | Feb 28, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB06B1/0688
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An acoustic-based system, such as a touchscreen system, is provided. The system comprises an acoustic substrate and an acoustic transducer operably coupled to the substrate. The transducer exhibits a higher order odd resonant frequency that is equal to the operating frequency of the system. As a result of using the higher resonant frequency that is substantially equal to the operating frequency, the thickness of the transducer can be increased, and thus made more durable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.