Patent · US Active

Fingerprint information detection circuit

US9922230B2 · kind B2 · utility

0Cited by
3References
20Claims
0Family size

Assignee

Inventors

Key dates

Filing dateDec 19, 2016
Grant dateMar 20, 2018
Priority date—
Expiry dateDec 19, 2036

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH10D62/235
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

A fingerprint information detection circuit comprises an amplification unit, a source follower unit, a reset unit, and a feedback unit. The amplification unit is coupled to the source follower unit. The reset unit is coupled to both the feedback unit and the amplification unit. The feedback unit and the amplification unit are coupled. The reset unit includes a first transistor and a reset transistor, wherein source and drain electrodes of the first transistor are coupled, wherein one of source and drain electrodes of the reset transistor is coupled to the source and drain electrodes of the first transistor.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.