Patent · US Expired

Sensor unit, especially for fingerprint sensors

US7251351B2 · kind B2 · utility

108Cited by

8References

18Claims

0Family size

Assignee

IDEX ASA · NO

Inventors

Svein Mathiassen · Heggedal, NO
Jon Nysaether · Oslo, NO
Bjorn Erik Seeberg · Oslo, NO
Ovidiu Vermesan · Kongsberg, NO

Key dates

Filing date	Jun 8, 2001
Grant date	Jul 31, 2007
Priority date	—
Expiry date	Apr 5, 2023

Classification

Technology area (CPC H)Electricity
CPC primaryH01L2924/15788
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

Sensor chip, especially for measuring structures in a finger surface, characterized in that it comprises an electronic chip of a per se known type being provided with a number of sensor electrodes for capacitance measurements, the chip being positioned on an electrically insulating substrate being provided with a number of openings through which electrical conductors are provided, the ends of said conductors constituting a sensor array for capacitance measurements so that the sensor array is positioned on a first side of said substrate and the electronic chip is positioned on the other side of the substrate.

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