Finger biometric sensor with sensor electronics distributed over thin film and monocrystalline substrates and related methods
US7616786B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 24, 2004 |
| Grant date | Nov 10, 2009 |
| Priority date | — |
| Expiry date | Jan 17, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/1306
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A finger biometric sensor may include a thin film substrate, a thin film transistor (TFT) layer on the thin film substrate, and an array of electric field sensing electrodes adjacent the TFT layer for receiving a finger adjacent thereto. The TFT layer may include a plurality of TFTs defining a respective TFT amplifier stage for each electric field sensing electrode. The sensor may further include a finger excitation electrode adjacent the array of electric field sensing electrodes, and at least one integrated circuit adjacent the thin film substrate. The integrated circuit may include a monocrystalline substrate and processing circuitry adjacent the monocrystalline substrate and connected to the TFT amplifier stages.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.