Patent ID: 9731963
Date: 2017-08-15
CPC Classifications: B81B,B81C

Claim:
1. A manufacturing method, comprising: providing a first substrate having a first passivation layer disposed above a patterned top-level metal layer, and further having a second passivation layer disposed over the first passivation layer, the second passivation layer having a top surface; forming an opening in a first portion of the second passivation layer, the opening exposing a portion of a surface of the first passivation layer; forming a conformal layer of material over the top surface of the second passivation layer and over the exposed portion of the first passivation layer; removing a portion of the conformal layer of material; patterning the second and first passivation layers to expose portions of the patterned top-level metal layer; and bonding a second substrate and the first substrate to each other; wherein the bonding occurs within a temperature range in which at least the exposed portion of the material undergoes outgassing.