Patent ID: 9139424
Filing Date: 2015-09-22
Classification: B81B,B81C,H01L

Abstract:
1. A method of encapsulating at least one microelectronic device, comprising: encapsulating the at least one microelectronic device in a cavity hermetically sealed against air, a cap of the cavity comprising at least one wall permeable to at least one noble gas; injecting the at least one noble gas into the cavity through the at least one wall permeable to the at least one noble gas; hermetically sealing the cavity against air and the at least one noble gas injected into the cavity; and forming, between the encapsulating and the injecting, at least one portion of material impermeable to the at least one noble gas such that said at least one portion of material impermeable to the at least one noble gas partially covers the at least one wall permeable to the at least one noble gas.