Fingerprint detection control circuit, fingerprint detection control method and display device
US11587352B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 10, 2020 |
| Grant date | Feb 21, 2023 |
| Priority date | — |
| Expiry date | Jan 8, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/1318
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A fingerprint detection control circuit, a fingerprint detection control method and a display device. The fingerprint detection control circuit includes a sensing circuitry, a resetting circuitry, a control circuitry and a conversion circuitry. The control circuitry provides a switch control signal to a control end of the resetting circuitry under the control of a first control signal. The resetting circuitry provides a resetting voltage to a conversion control end under the control of a potential at its control end. The conversion circuitry converts a photovoltage signal into a corresponding current signal under the control of a potential at the conversion control end when a first voltage end is electrically connected to a first signal output end, and outputs the current signal via the first signal output end.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.