Sensor pixel and fingerprint sensing sensor including the same
US11227137B2 · kind B2 · utility
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16Claims
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Key dates
| Filing date | Oct 28, 2020 |
| Grant date | Jan 18, 2022 |
| Priority date | — |
| Expiry date | Oct 28, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/1306
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A sensor pixel according to a feature of the present invention includes: a detection electrode that forms capacitance with a recognition target; and a sensor pixel circuit that is connected to the detection electrode, generates a detection signal by using the detection electrode, and to which a DC voltage for resetting is supplied, wherein a coupling pulse is periodically applied to the recognition target that forms the capacitance with the detection electrode, and the detection signal may be changed according to the coupling pulse.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.