The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 26, 2019
Filed:
Jul. 28, 2017
Commissariat a L'energie Atomique ET Aux Energies Alternatives, Paris, FR;
Idemia Identity & Security France, Issy-les-Moulineaux, FR;
Jean-Francois Mainguet, Grenoble, FR;
Joel Yann Fourre, Marly le Roi, FR;
COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, Paris, FR;
IDEMIA IDENTITY & SECURITY FRANCE, Issy-les-Moulineaux, FR;
Abstract
A thermal pattern sensor is provided, including a matrix of several lines and columns of pixels, each pixel including at least one pyroelectric capacitance formed by at least one portion of pyroelectric material arranged between a lower electrode and an upper electrode; wherein one of the lower and upper electrodes forms a reading electrode of the pixels; and a plurality of electrically conductive portions, each being configured for Joule effect heating, independently of other portions of the plurality, of the at least one portion of pyroelectric material of the at least one pyroelectric capacitance of pixels of at least two adjacent lines of pixels associated with the each electrically conductive portion, and each being arranged facing at least a part of a surface of the reading electrode of each of the pixels of the at least two adjacent lines of pixels associated with the each electrically conductive portion.