Patent ID: 9511998
Filing Date: 2016-12-06
CPC Classification: B81C,H01L

Claim Text:
1. A method of fabricating a microelectromechanical system (MEMS) device, the method comprising: forming a cavity in a first substrate, the first substrate comprising a silicon substrate; forming a passivation layer within the cavity; defining a getter location within the cavity at which the substrate is exposed through the passivation layer; porosifying the substrate at the getter location to form pores; depositing a getter on the getter location such that the getter enters the pores and coats surfaces within the pores; removing the passivation layer; bonding the first substrate to a second substrate with the cavity facing the second substrate, the second substrate including a MEMS device which is positioned in the cavity when the first substrate is bonded to the second substrate; and activating the getter.