Capacitive sensor
US11726052B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 19, 2020 |
| Grant date | Aug 15, 2023 |
| Priority date | — |
| Expiry date | Apr 5, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/228
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A capacitive sensor includes a substrate and an electrode structure including at least a first electrode, a second electrode and a sensing layer arranged between the first electrode and the second electrode. The sensor further includes a measurement circuit configured to measure the capacitance of the electrode structure by applying, at a first measurement phase, a first pair of electrical potentials including a first electrical potential of the first electrode and a first electrical potential of the second electrode to the first electrode and the second electrode by applying, at a second measurement phase, a second pair of electrical potentials including a second electrical potential of the first electrode and a second electrical potential of the second electrode to the first electrode and the second electrode. The first electrical potential of the second electrode and the second electrical potential of the second electrode are different from each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.