Fingerprint recognition circuit, driving method therefor, display panel, and display device
US11651613B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 11, 2020 |
| Grant date | May 16, 2023 |
| Priority date | — |
| Expiry date | Feb 14, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/1318
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Embodiments of the present disclosure provide a fingerprint recognition circuit, a driving method therefor, a display panel, and a display device. The fingerprint recognition circuit includes: a photosensitive detection circuit, coupled to a bias control signal terminal and configured to receive light reflected from a fingerprint and generate a control signal; a reset control circuit, coupled to a reset signal terminal, a first control terminal, and the photosensitive detection circuit respectively, and configured to provide a signal of the reset signal terminal to the photosensitive detection circuit under control of the first control terminal; and a signal reading circuit, coupled to the photosensitive detection circuit, a power supply terminal, a second control terminal, and a signal output terminal respectively, and configured to output a corresponding fingerprint recognition signal according to the control signal under control of the second control terminal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.