Patent ID: 9023675
Filing Date: 2015-05-05
Classification: B81B,B81C,G01C,G01P,H01L

Abstract:
1. A process for encapsulating at least one microelectronic device, comprising at least the following steps: make the microelectronic device on a first substrate; make at least one portion of a first material not permeable to the ambient atmosphere and permeable to at least one noble gas in a second substrate not permeable to the ambient atmosphere and to the noble gas, said portion of the first material extending from a first face of the second substrate as far as another face of the second substrate opposite the first face; secure the second substrate to the first substrate, forming at least one cavity inside which the microelectronic device is encapsulated such that said portion of the first material forms at least part of a wall of the cavity; inject the noble gas into the cavity through the portion of the first material; hermetically seal the cavity towards the ambient atmosphere and the noble gas; the gas or gases of the ambient atmosphere being different from the noble gas.