Fingerprint identification circuit, driving method thereof, and display device
US10262180B2 · kind B2 · utility
Assignees
Inventor
Key dates
| Filing date | Aug 29, 2017 |
| Grant date | Apr 16, 2019 |
| Priority date | — |
| Expiry date | Nov 17, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/1347
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A fingerprint identification circuit includes a plurality of fingerprint identification units arranged in an array form. Each fingerprint identification unit includes: an input module configured to apply a detection signal to a sensing module; the sensing module configured to sense a fingerprint and transmit a sensing signal to a source follower; the source follower configured to amplify the sensing signal and output it to an output module; an output control module configured to apply an operating voltage for the source follower to the source follower; the output module configured to output the amplified sensing signal; a resetting module configured to reset an output end of the source follower and an input end of the output module to be at a first level; and an acquisition module configured to enable the input end and an operating voltage input end of the source follower to be electrically connected to each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.