Strain gauge driving piezoelectric device
US10631400B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 13, 2019 |
| Grant date | Apr 21, 2020 |
| Priority date | — |
| Expiry date | Mar 13, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2201/10151
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A strain gauge driving piezoelectric device is disclosed. A piezoelectric element is arranged between a plurality of layers of first strain gauges correspondingly spaced from each other and a plurality of layers of second strain gauges correspondingly spaced from each other. The first strain gauges and the second strain gauges are arranged on different layers of the flexible circuit board. The first strain gauges and the second strain gauges generate a driving voltage according to variations of resistance values of the first strain gauges and the second strain gauges when a stress is applied to the flexible circuit board, and the driving voltage induces the piezoelectric effect of the piezoelectric element and then drives the piezoelectric element to generate an output voltage for haptic feedback.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.