Patent · US Active

Integrated fingerprint and force sensor

US11423686B2 · kind B2 · utility

2Cited by
164References
20Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJul 25, 2018
Grant dateAug 23, 2022
Priority date—
Expiry dateFeb 10, 2039

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG06F3/041
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

Described herein is a ruggedized microelectromechanical (“MEMS”) sensor including both fingerprint and force sensing elements and integrated with complementary metal-oxide-semiconductor (“CMOS”) circuitry on the same chip. The sensor employs either piezoresistive or piezoelectric sensing elements for detecting force and also capacitive or ultrasonic sensing elements for detecting fingerprint patterns. Both force and fingerprint sensing elements are electrically connected to integrated circuits on the same chip. The integrated circuits can amplify, digitize, calibrate, store, and/or communicate force values and/or fingerprint patterns through output pads to external circuitry.

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