Active thermal pattern sensor comprising a passive matrix of pixels
US10867152B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 27, 2017 |
| Grant date | Dec 15, 2020 |
| Priority date | — |
| Expiry date | Jul 27, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N19/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Thermal pattern sensor including a matrix of multiple rows and columns of pixels, each pixel comprising: - a pyroelectric capacitor comprising a pyroelectric portion positioned between lower and upper electrodes, in which a first of these electrodes forms a readout electrode; and —a heating element that is capable of heating the pyroelectric portion of said pixel; and in which: - for each row of pixels, the heating elements are capable of heating the pyroelectric portion of the pixels of the row independently of the heating elements of the pixels of the other rows; and —for each column of pixels, the readout electrodes of each pixel are electrically linked to one another and are formed by a first electrically conductive portion that makes contact with the pyroelectric portions of the pixels of the column, and that is separate from the first portions of the other columns.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.