US Patent 10262180 Fingerprint identification circuit, driving method thereof, and display device

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.