Force sensing using sensor electrodes of different materials
US10572081B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 18, 2017 |
| Grant date | Feb 25, 2020 |
| Priority date | — |
| Expiry date | Oct 24, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/04111
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and associated processing system and input device are disclosed, the method comprising acquiring capacitive measurements using individual electrodes of a plurality of first sensor electrodes and a plurality of second sensor electrodes. The first sensor electrodes are formed of a first material having a positive gauge factor, and the second sensor electrodes are formed of a second material having a negative gauge factor. The method further comprises selectively forming one or more bridge circuits using the first sensor electrodes and the second sensor electrodes; and acquiring force measurements using the one or more bridge circuits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.