Force-sensitive key module and force-sensitive switch structure thereof
US12266484B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 22, 2023 |
| Grant date | Apr 1, 2025 |
| Priority date | — |
| Expiry date | Aug 31, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H13/20
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A force-sensitive key module and a force-sensitive switch structure are provided. The force-sensitive switch structure includes a first protective layer, a second protective layer, a first conductive layer, a second conductive layer and a force-sensitive layer. The first protective layer receives a pressing force. The second conductive layer is aligned with the first conductive layer. The force-sensitive layer is installed on the first conductive layer or the second conductive layer. When the first protective layer receives the pressing force, an electric connection between the first conductive layer and the second conductive layer is established, and the force-sensitive layer generates an analog sensing signal in response to the pressing force. When a magnitude of the pressing force is changed, the analog sensing signal is correspondingly changed according to an impedance change of the force-sensitive layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.