Pressure sensing detection circuit and driving method thereof, electronic device
US10761637B2 · kind B2 · utility
1Cited by
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15Claims
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Key dates
| Filing date | Mar 12, 2018 |
| Grant date | Sep 1, 2020 |
| Priority date | — |
| Expiry date | Aug 7, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L1/18
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A pressure sensing detection circuit and a driving method thereof, an electronic device. The pressure sensing detection circuit includes: an excitation signal circuit, configured to output an alternating current voltage signal; a pressure sensing circuit, configured to sense a magnitude of an external pressure and output a detection voltage signal under excitation of the alternating current voltage signal; and a phase detection circuit, configured to detect a phase change value of the detection voltage signal and convert the phase change value into a voltage value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.