Fingerprint or palmprint sensor
US10380400B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 27, 2016 |
| Grant date | Aug 13, 2019 |
| Priority date | — |
| Expiry date | May 21, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N19/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The invention relates to a skin print sensor (140) comprising, on a supporting substrate, a plurality of elementary acquisition cells (141), each of which includes: a reading node (SN); a first photoelectric or pyroelectric conversion element (PYR) having a first electrode that is connected to the reading node (SN) as well as a second electrode that is connected to a control node (CMD) of the cell; and a third electrode (EL) that is connected to the reading node (SN), is coated with a dielectric layer and is designed to form a capacitance along with the skin of a user; in each cell of said sensor, the control node (CMD) is designed to receive a control signal that initiates reading of a value on the reading node (SN), said value representing the capacitance formed between the third electrode (EL) and the user's skin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.