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:
Dec. 02, 2014
Filed:
Jun. 21, 2012
Christophe Pautet, Saint Marcel Bel Accueil, FR;
Arnaud Etcheberry, Colombes, FR;
Alexandre Causier, Ferrieres Saint Hilaire, FR;
Isabelle Gerard, Gif sur Yvette, FR;
Christophe Pautet, Saint Marcel Bel Accueil, FR;
Arnaud Etcheberry, Colombes, FR;
Alexandre Causier, Ferrieres Saint Hilaire, FR;
Isabelle Gerard, Gif sur Yvette, FR;
Societe Francaise de Detecteurs Infrarouges-Sofradir, Chatenay Malabry, FR;
Centre National de la Recherche Scientifique, Paris, FR;
Abstract
A method for removing the growth substrate of a circuit of electromagnetic radiation detection, especially in the infrared or visible range, said detection circuit including a layer of detection of said radiation made of HgCdTe obtained by liquid or vapor phase epitaxy or by molecular beam epitaxy, said detection circuit being hybridized on a read circuit. The method includes submitting the growth substrate to a mechanical or chem.-mech. polishing step or to a chemical etch step to decrease its thickness, all the way to an interface area between the material of the detection circuit and the growth substrate; and submitting the interface thus obtained to an iodine treatment.