Piezo based force sensing
US10120478B2 · kind B2 · utility
27Cited by
88References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 28, 2014 |
| Grant date | Nov 6, 2018 |
| Priority date | — |
| Expiry date | Jan 24, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/960755
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Systems for detecting an amount and/or location of a force applied to a device using a piezoelectric film are provided. One example system can include a transparent piezoelectric film for generating an electric charge in response to a deformation of the film. Electrodes positioned on opposite surfaces of the piezoelectric film can be used to detect the generated electric charge and determine an amount and/or location of force applied to the film based on the generated electric charge. In another embodiment, the system can include a capacitive touch sensor for determining a location of a touch event on the device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.